1, project overview
1.1 Basic project overview project by the building 61 floors, 229.5 meters high, with a total floor area of about 160,000 square meters, including a tower as well as peripheral podium and pure basement composition, the overall set of 4 layers of basement, the design of the tower is used in accordance with the work of the peripheral podium inverse work of the program for foundation pit The design adopts the program of tower building and peripheral podium building to carry out the foundation pit construction.
The design unit of this project is East China Architectural Design and Research Institute Co., Ltd; the supervising unit is Shanghai Synergy Engineering Supervision and Cost Consulting Co., Ltd; the construction unit of pile foundation and pit enclosure is Zhejiang Geology and Mineral Engineering Company.
According to the drawing design and contract construction requirements, the construction contents are mainly pile foundation, diaphragm wall enclosure structure, temporary enclosure structure of drilled piles for tower building, high pressure rotary spraying piles with two double tubes, hydraulic soil mixing piles with SMW method and compression grouting, etc. This construction organization design mainly focuses on the above mentioned piles, which are mainly designed by East China Architectural Design and Research Institute Co. This construction organization design is mainly compiled and organized for each of the above processes.
This project ±0.00m relative to the absolute elevation of 3.500m, the average relative elevation of the site is -1.100m, considering 200mm thick C20 plain concrete bedding. The relative elevation of the bottom of foundation bedding is -20.100m, -13.300 (podium area). Pit excavation depth of 19m.
1.2 pit enclosure engineering design overview
1.2.1 underground diaphragm wall project enclosure structure using underground diaphragm wall, diaphragm wall total extension of about 536m, ***93 walls, divided into A, B, C, D, E type of five kinds of walls, A-type wall thickness of 1.0m, the rest of the thickness of the underground wall 0.8m. wall depth of 33 ~ 35m ranging, underground wall walls, wall depth of 33 ~ 35m. The depth of the wall is 33~35m, and the underground wall site is inserted into (7) 1 layer of powder sand layer. Underground diaphragm wall joint form adopts flexible joints, underground wall concrete design strength grade C30, the main reinforcement protective layer thickness of 70mm, impermeability grade S8; reinforcing steel using HPB235, HRB335, HRB400.
1.2.2 Drilled piles row pile pit inside the tower tower perimeter set up drilled piles row piles in combination with a single row of three-axis soil-mixed piles stopping curtains. As a temporary partition enclosure structure, bored piles concrete design strength grade C30. tower drilled piles, depth of about 34m (pile bottom relative elevation -35.10m), the number of piles 187.
1.2.3 Triaxial hydraulic soil mixing pilesTriaxial hydraulic soil mixing piles are used for soil reinforcement of passive zone inside the foundation pit and water stopping curtain on the temporary enclosure side. Triaxial soil mixing pile adopts P32.5 grade fresh ordinary silicate cement, the cement mixing amount of the part below the base is 20%, the water-cement ratio is 1.5~2.0, the 28-day unconfined compressive strength of the pile body is ≥1.0MPa. Triaxial soil mixing pile adopts Φ850 triaxial soil mixing pile equipment for the construction, and adopts two spraying and two churning construction technology, and water stopping curtain adopts the method of sockets connecting one hole for the construction, and the soil reinforcement laps 250mm to each other, and the soil reinforcement laps 250mm to each other. The soil reinforcement is overlapped with each other by 250mm, and the cement mixing must be uniform within the pile body. Pile verticality deviation is not greater than 1/150, pile position deviation is not greater than 20mm.
1.2.4 Compression grouting passive area between soil reinforcement and enclosure structure, pile and water curtain set between compression grouting to fill the gap. The former compact grouting point spacing for 1000mm, the latter compact grouting point spacing with the row of piles spacing 1300mm. compact grouting using P32.5 grade fresh ordinary silicate cement. Pressure grouting slurry injection rate of 20% (and the volume of reinforced soil volume ratio). The water-cement ratio is 0.55, and the sequence of grouting adopts hop-hole interval grouting.
1.2.5 High-pressure rotary spray pile High-pressure rotary spray pile diameter 1000, spacing 700mm. cement dosage 550kg/m, cement slurry water-cement ratio is 0.8. pressure control: air pressure is not less than 0.7MPa, the cement slurry flow pressure should be greater than 25MPa.
2, the preparation of the basis
2.1 Shanghai standard "Foundation Design Code Design Code for Ground Foundation (DGJ08-11-1999);
2.2 Technical Specification for Type Steel and Hydraulic Soil Churning Wall (DGJ08-116-2005);
2.3 Code for Quality Acceptance of Construction of Building Foundation (GB50202-2002);
2.4 Unified Standard for Quality Acceptance of Construction of Building Works (GB50300-2001);
2.4 Unified Standard for Quality Acceptance of Construction of Building Works ( GB50300-2001);
3, the scope of preparation of the group
Foundation pit enclosure structure system: Ф850 triaxial soil mixing piles outside the pit water curtain, Ф850 triaxial soil mixing piles inside the pit reinforcement.
4, construction deployment
4.1 the overall construction sequence to consider the site of the existing power supply, water supply conditions, to achieve a reasonable allocation of resources. In order to ensure the quality of this project pit enclosure system construction, pit enclosure system overall construction sequence is: first construction Ф850 three-axis soil mixing piles outside the pit water curtain, to be constructed 7 days after the beginning of the construction along the three axes of the three-axis soil mixing piles already constructed along the inner side of the construction of the drilled piles, Ф850 three-axis soil mixing piles outside the pit water curtain is completed, the work method is transferred to the pit, the construction of pit reinforcement, the three-axis soil mixing piles pit reinforcement and the drilled pile The three-axis soil mixing pile pit reinforcement and drilled piles cross construction.
4.2 Site Layout
4.3 Electricity Supply and Daily Water Supply The electricity and daily water supply required for each set of equipment are as follows:
4.3.1 Electricity supply: about 300KW.
4.3.2 Daily water supply quantity is about: 180 cubic meters.
5, construction schedule
5.1 construction of the total progress schedule of the project to consider 24-hour construction, the specific construction schedule is detailed in the following table: No. Calendar days task name days (days)
1. construction preparation 3
2. construction of the pit outside the Ф850 three-axis soil-mixed piles stopping curtain curtain 20
3. No. Construction In-pit reinforcement Ф850 three-shaft soil mixing pile 25
5.2 measures to ensure the schedule
5.2.1 construction organization guarantee measures
(1) equipped with experienced and competent construction team and the project leadership team, to achieve the staffing of the staffing of good, effective implementation of project management.
(2) organizational mechanism to ensure that the progress of the project, to ensure that the project to create a qualified target, so that there are goals, measures and certainty. Own assured, but also let the owner assured, to the owner to hand over a quality project.
(3) in accordance with the total progress plan to complete the project, the sub-parts of the project process decomposition, implementation. Do construction staffing organization to implement, construction machinery, materials, equipment, according to the implementation of the entry and exit plan, phased construction progress time to implement.
5.2.2 Material supply guarantee measures
(1) The project selects high-quality bulk cement, and during the construction period, make good communication with the cement supplier, and ask the cement supplier to make a promise to our company that once the construction starts, the supply of 200 tons of cement will be guaranteed every day to ensure the normal operation of the construction.
(2) During the construction period, ensure continuous supply of bulk cement storage.
5.2.3 Guarantee measures for construction machinery and equipment
(1) According to the characteristics of the project, equipped with appropriate construction machinery and equipment, machinery and equipment must be overhauled and maintained in advance before they are put into use to ensure that the equipment and machinery into the construction site are in good working condition and to provide guarantee for the progress of the project.
(2) Increase the backup of mechanical equipment parts and slurry pumps, once damaged, immediately activate the backup equipment to ensure that the construction of continuous.
5.2.4 Technical guarantee measures
(1) Organization of engineering and technical personnel, drawing study and review, **** with the participation of the preparation of the project network schedule, to ensure that the technical program is reasonable and feasible, the implementation of the network plan is effective and reliable.
(2) will be in the construction process of the contradictions and problems, in the construction process to be completely resolved, with each other effectively with the construction.
(3) Organization of technical personnel to prepare optimized construction program, deepen the operational design and key nodes of the technical processing measures to ensure the quality of the project, but also to ensure the smooth progress of the project.
(4) Fully consider all kinds of unfavorable factors and possible emergencies, and formulate targeted measures. Do beforehand control, process implementation, intermediate inspection, process control and other multiple guarantees to ensure the smooth implementation of the schedule plan.
6, to be put into the construction of machinery, equipment
6.1 the main construction machinery, equipment table No. equipment name specification model unit number power total (KW)
1. three-shaft mixer drilling rig JB-160 1160 × 1
2. three-shaft mixer drilling rig ZKD85-3A 190 × 1
3. pile driver DH-608 1 diesel engine
4.Excavator 0.8m3 2 diesel engine
5.Bulk cement automatic mixing system set 145×1
6.Slurry pump BW-200 215×2
7.Spare slurry pump BW-200 2
8.Air compressor 6m3 145×1
9.Air compressor 6m3 145×1
9. /p>
9. welding machine BZ-500 120 × 1
10. tungsten iodine lamps set 13.5 × 1
6.2 construction of measuring instruments, meters No. Instruments and equipment name specifications model unit number 1 steel tape measure 50 meters to 12 latitude and longitude meter J2-2 13 level meter DSZ3 14 line hammer 3 meters only 2 Note: the above measuring instruments before use have been tested by a professional testing unit. Before the use of the above measuring instruments are tested by professional testing units to ensure the effectiveness of the use of measuring instruments in accordance with standard requirements.
7, three-axis deep mixing pile construction program
Special situation handling measures
(1) When there is an exception, such as not being able to reach the design depth for construction, it should be reported to the Party and the supervisor in time, and remedial measures should be taken after the study by all parties.
(2) When encountering the ground trench or underground pipeline can not be constructed according to the design direction, it is appropriate to consult with the design unit, the owner, the supervision **** with the consultation to determine the solution.
(3) in the construction process, such as encountering power outages or special circumstances caused by the shutdown led to the interruption of the wall process, the mixer should be lowered to 0.5m below the stopping point, to be resumed when the slurry drilling and churning to prevent discontinuous wall; such as for some reason a long time of shutdown, it is appropriate to dismantle the slurry pipeline, properly cleaned to prevent the slurry hardened pipe blockage.
(4) found that the pipe blockage, should immediately stop the pump to deal with. After the treatment, immediately lift up and sink the mixing drilling tool 1.0m before continuing grouting, and wait 10-20 seconds to resume lifting up the mixing to prevent pile breakage.
(5) Construction of cold joints in the construction process once the cold joints appear in the cold joints on the outside of the enclosing piles to supplement the stirring of the pile program, in the cold joints of the enclosing piles to achieve a certain strength to supplement the piles, in order to prevent bias drilling, to ensure the effect of supplementing the piles, the vegetation of the pile and the overlap thickness of enclosing piles of about 10cm. the increase in volume of the project due to the treatment of cold joints to the actual construction volume of the additional calculation.
Leakage treatment in the whole pit excavation stage, our company will organize the site site team resident site and prepare the appropriate equipment and materials, closely watch the pit excavation, once found wall leakage, timely sealing. Specifically using the following two methods to fill the leak.
Drainage pipe: insert the drainage pipe at the seepage point of the pit, seal around the drainage pipe with quick-setting waterproof cement mortar, and then tie the drainage pipe after the cement mortar reaches strength.
Two-fluid grouting:
①Formulation of chemical slurry.
②Prepare and mix the chemical slurry and cement slurry into the slurry storage barrel for spare.
③Start the grouting pump when grouting, through the two grouting pumps and two pipelines at the same time connected to the Y-type connector from the exit of the mixture into the bottom of the hole to be reinforced soil parts.
④The flow and pressure should be controlled as much as possible during the grouting process to prevent the loss of slurry.
⑤Construction parameters.
Grouting pressure: 0.3-0.8MpaGrouting flow: 25-35l/minGrouting volume: 0.375m3/Extended meterGrout ratio:
A.Liquid water: cement: bentonite: external admixture=0.7:1:0.03:0.03Cement choose ordinary silicate cement grade 32.5.
B. Liquid water glass selected wave width of 35-40 ° blA liquid: B liquid = 1:1 initial solidification time: 45 seconds solidification strength: 3-4Mpa / 2h2 to ensure that the strength and uniformity of the pile required to do:
① cement flow, grouting pressure using manual control, strict control of the amount of cement in each mixing bucket and the height of the liquid surface, the amount of water to take the total amount of control, and with a specific gravity meter to check the cement slurry at any time. And use the specific gravity meter to check the specific gravity of cement slurry at any time.
②The soil should be fully mixed, strict control of drilling sinking, lifting speed, so that the original soil is fully broken, and is conducive to the cement slurry and soil uniform mixing.
③Slurry must not segregate, cement slurry should be made strictly according to the predetermined ratio, in order to prevent the mortar from segregating, the slurry must be stirred for 30 seconds before releasing before pouring into the slurry storage bucket.
④The slurry pipeline should not be blocked during the stage of slurry compression, no slurry breakage should be allowed, the whole pile should be grouted uniformly, and no soil slurry sandwich layer should be occurred.
5.5 If the pipe is blocked, stop the pump immediately. After the treatment, immediately lift up and sink the mixing drilling tool 1.0m before continuing grouting, and wait 10-20 seconds to resume lifting up the mixing to prevent pile breakage.
8, technical measures to ensure the quality of the project
8.1 Construction technology key and guarantee measures in order to achieve the quality standards stipulated in the design drawings and construction acceptance specification, in addition to the whole process control in the links of people, machines, materials, methods and environment that affect the quality of the links, the specific attention should also be paid to the following aspects:
(1) The construction site should be leveled off and the hard surface of the construction area should be cleared. Clear the construction area of the surface of the hard materials and underground obstacles, in the case of the Mingbang (pond) and low-lying areas should be pumped and desilting, backfill clay soil (or replacement soil) and layered tamping, paving the roadbed box, the roadbed bearing capacity to meet the requirements of the heavy-duty pile driving machine, walking stability requirements, to ensure that mixing piles verticality to meet the design requirements.
(2) The cement mixing pile shall be test formed according to the design requirements, to determine the actual cement slurry water-cement ratio, pile forming process and construction steps in this project, and the test piles shall be set as 2-3 groups.
(3) The project is proposed to adopt automatic mixing system with computerized measurement and bulk cement tank to ensure the stability of the slurry quality, and the slurry should be treated as waste slurry and prohibited to be reused if it is left for more than 2 hours for any reason.
(4) Strictly control the mixing pile sinking speed and mixing and lifting speed, and keep the uniform speed sinking (lifting), mixing and lifting should not make the hole produce negative pressure to cause foundation settlement around the embankment, and make a good sign in the pile machine barrel, and strictly control the elevation of the top of the pile and the bottom of the pile of the waterproof curtain.
(5) In order to improve the quality of waterproof curtain pile, this project adopts triaxial mixing pile to repeat the lapping process in full section. Pile and pile lap time more than 24 hours, should be recorded as a cold joint, to take in the lap of the replacement of the mixing pile and other technical measures to ensure the quality of mixing pile lap.
(6) 1 group of triple (7.07cm×7.07cm×7.07cm) standard molded hydraulic soil test block is sampled in each shift (24 hours), the sampling should be representative, and the natural conservation determination of unconfined compressive strength of the test block after 28 days should meet the design requirements.
(7) carefully fill out the cement records for each shift and the corresponding statements for inspection.
(8) Check the construction records at any time during the construction process, and assess the quality of each group of piles and test batch against the specified construction process, focusing on: cement dosage, pile length, whether there is any breakage of pile in the process of pile making, and mixing and lifting time.
(9) The necessary quality tracking inspection can be carried out after the piles are formed to understand the mixing uniformity of the pile strength, as well as the effect of seepage control and water stopping, and effective remedial measures should be taken in the case of individual parts of the piles that do not meet the specified requirements.
8.2 Quality control during pile construction period
(1) Do a good job in each construction team's technical briefing at different levels, and training work before starting work, holding license to ensure the quality of work.
(2) Ensure the use of design strength grade cement, incoming cement timely delivery inspection, qualified before use.
(3) Strictly control the water-cement ratio (1.5-2.0) and the amount of admixture, to determine the sinking speed of 1m/min, lifting speed of 2m/min.
(4) construction machinery is good, JB-160 pile machine, ZKD85-3 Ф850 three-shaft mixer, overhauling before entering the site, the construction of the timely routine maintenance, inspection; BW-200 type grout pumps Timely repair, maintenance, and prepare a set of emergency spare slurry pump, so as to ensure the uniformity and continuity of the slurry.
(5) Check and correct the verticality of pile driver before construction.
(6) Strengthening the comprehensive management of the above construction quality points, the project department realizes the 24-hour post duty system, and makes the construction process quality control records.
(7) In the process of construction, a person is responsible for filling in the construction record, and the construction record sheet records the detailed records of pile number, pile length, cross-section area, time and depth of sinking (lifting), cement dosage, cement mixing ratio, and water-cement ratio.
8.3 Engineering and technical data management in the construction process should be used in accordance with national and local standards, data collection, organization, cataloguing, summary binding, providing original records for inspection by the relevant departments, approved. After completion of the archives in accordance with the provisions.
9, safety construction measures
9.1 Safety Management System
9.1.1 Safety Responsibility
1. The project manager is the overall responsibility for safe construction.
2. The deputy project manager is responsible for the direct leadership of the safety construction, specific organization and implementation of safety measures and safety systems.
3. The project engineer is responsible for organizing the preparation and review of safety measures, safety technology and safety technology education.
4. The construction worker is responsible for the safety of construction within the scope of construction, and implement the safety measures.
5. Site full-time safety management personnel, responsible for safety management and supervision and inspection.
6. All professionals have job security duties.
7. Each construction worker also has safety duties.
9.1.2 Safety EducationSafety education is divided into two parts: general safety education and technical safety briefing. General safety education includes:
①All workers enter the construction site before the entrance education;
②regular safety awareness education;
③new workers on the job education;
④various types of work combined with the training of safe operation procedures education.
Safety technical briefing are:
①Technical safety briefing for specific sub-parts of the project and the use of new techniques and materials;
②Safety technical briefing for each arrangement of the production task;
③Daily on-boarding safety briefing.
9.1.3 Safety Inspection
1. Comprehensive safety inspection is carried out once a month by the persons in charge of all levels of the site and the relevant operational personnel.
2. Routine periodic inspection once every ten days, implemented by the construction worker.
3. Shifts are inspected daily in conjunction with the induction safety briefing.
4. According to the needs of the progress of the project, the professional department to organize and implement occasional professional inspection.
9.2 General Measures for Safe Construction
9.2.1 Safety Management of Construction Machinery
1. Data Management Establishment of the construction site's machinery and equipment use ledger to detect the safe operation of machinery and equipment on the construction site is under control. The account has the following aspects:
(1) large construction machinery and equipment installation and commissioning of the acceptance of the completion of the book.
(2) the registration roster of special types of operators (machine operator, driver, starter and conductor of the unit).
(3) the crew on board the operation of the safety and technical delivery of the book.
(4) Regular inspection data of machinery and equipment and equipment hidden danger rectification list as well as the record of rectification.
(5) Visa sheet for the operating hours and shifts of the equipment.
2. Use and maintenance
(1) in order to ensure the safe operation of machinery and equipment in the construction site, first of all, machinery and equipment to ensure that the mechanical equipment in good condition to provide for the use of the construction site. With "sick" machinery and equipment and the lack of safety devices or safety devices failing mechanical equipment shall not enter the construction site.
(2) the construction site is responsible for the mechanical equipment to enter the site operation and provide roads, water and electricity, temporary machine shed or site and other necessary conditions, and eliminate the mechanical equipment to work on the obstruction or unsafe factors, need to work at night to set up adequate lighting.
(3) machinery and equipment to enter the site of the work site, construction technicians should be to the machine operator for construction tasks and safety and technical measures in writing.
3. Installation of large machinery and equipment
(1) large construction machinery and equipment into the construction site installation location and the construction site of the field layout plan shown in the location of the crane is not close to the overhead transmission lines, such as limited to the site conditions must be in the line next to the line of work, to take safety measures to protect the work can be operated only after.
(2) large construction machinery and equipment installation, dismantling according to the provisions of the original production plant, according to the mechanical equipment construction organization design of the technical program and safe operation of the technical measures, by the professional team (group) personnel in the team (group) under the unified command of the head of the team (group) responsible for the supervision of technical and safety personnel.
(3) large construction machinery and equipment installation is completed, after commissioning, test run and installation team (group) responsible person, crew responsible person, technician, safety officer together with the person in charge of the construction site and the relevant departments responsible for the acceptance of the equipment check. Acceptance of the visa, in the obvious place of the equipment hung on the "acceptance" sign, "mechanical properties" sign can be put into construction production operation.
4. Welding machine
(1) reliable rain protection measures;
(2) one or two wires (power supply, faucet) junction with a complete protective cover, the second line using the wire nose;
(3) good grounding or zero protection;
(4) wiring should not be haphazardly, good insulation welding handle.
5. Acetylene generator
(1) and open flame distance of more than 10m;
(2) equipped with a flashback preventer;
(3) insurance chain, explosion-proof membrane, insurance device is flexible and reliable, and the use of reasonable.
6. Gas cylinders
(1) all types of gas cylinders have obvious color coding and shockproof ring, and shall not be exposed to the open air;
(2) acetylene cylinders and oxygen cylinders at a distance of more than 5m;
(3) acetylene cylinders are equipped with a tempering device when in use;
(4) the skin tube with a clevis fastening;
(5) the operator with a valid card The operator has a valid license to operate on duty.
9.2.2 Construction Electricity Safety
1. General Provisions
(1) Three-phase five-wire system is adopted for on-site construction electricity.
(2) The power distribution box is set up with a main switch, and at the same time, one machine, one gate and one leakage protector.
(3) lighting and power electricity separately, the socket is labeled with the name of the equipment used.
(4) cable and branch line overhead or buried, overhead laying using insulators, not directly tied to the metal frame, is strictly prohibited to use bare metal wire tie.
(5) mobile electric box power and lighting set up in separate boxes.
(6) floor access and lighting using safe voltage, construction of electricity preparation of construction programs, and reliable safety and technical measures, reported for approval before proceeding.
(7) the construction site of electrical equipment and facilities effective safety management system, the site wires electrical equipment and facilities have a professional electrician to frequently check and organize, and found that the problem is immediately resolved.
(8) Where touching or close to the electrically charged body, are taken to insulate the protection as well as protection of safety distance and other measures.
(9) Power lines and equipment selection in accordance with national standards to limit the safety of the load capacity.
(10) All electrical equipment and metal casing with good grounding and zero protection, all the temporary power supply and mobile electric device device effective secondary leakage protection switch.
(11) Use safe voltage in very humid places, set up conspicuous electrical installation signs, and do not use electrical equipment without effective safety technical measures.
(12) After the installation of electrical wires and equipment, the power department together with the security department will inspect the construction site and accept it, and it can be used only after it is qualified.
(13) often on the staff of electrical safety education, without the examination of qualified electricians, mechanics and other personnel are not allowed to work.
2. Safety measures
(1) cable connectors into the junction box and attached to the wall. Junction box can be waterproof, dustproof, anti-mechanical damage and away from flammable, explosive, corrosive places.
(2) the distribution box used is in line with the JGJ59-99 specification requirements of the iron shell standard electrical box. Distribution box electrical device to do a machine, a gate, a leakage protection.
(3) switch box power line length is not greater than 30m, and its control of fixed electrical equipment, the horizontal distance of not more than 3m.
(4) all distribution boxes, switch boxes are numbered, the box electrical intact match.
(5) The resistance value of the work grounding is not more than 4. and tested by the electrician once a month, make original records.
(6) protective zero line for each repeated grounding device ground resistance value is not greater than 10.
(7) protective zero line selection of not less than 10mm2 insulated copper wire, uniform marking for the green/yellow two-color line, in any case, do not use the green/yellow two-color line for the load line.
(8) All motors, electrical appliances, lighting appliances, hand-held power tools, metal casing, non-electrified exposed conductive parts, to do protective zero.
(9) in addition to the tower crane, all motors, electrical appliances, lighting appliances, hand-held power tools, power line device secondary leakage gate protector.
(10) outdoor lamps and lanterns from the ground is not less than 3m, indoor lamps and lanterns is not less than 2.4 m. Fixed lighting comprehensive arrangement, lighting voltage is not greater than 36V, and the use of protective zero.
(11) the construction site is strictly prohibited the use of flower wire, plastic gel line for towing box power line, is strictly prohibited the use of wooden towing box, board and civilian plastic shell towing board.
9.3 summer construction safety precautions
9.3.1 personnel protection measures
(1) timely grasp of the meteorological department issued by the high temperature report, timely adjustment of work and rest time, to achieve the degree of tension, the arrangement is appropriate. Forecast temperature exceeds 35 degrees Celsius, from 11:00 a.m. - 14:00 p.m. points must be rested, such as the project requires continuous construction, there must be guardianship, and there are measures to protect the party.
(2) according to the number of construction workers equipped with a sufficient amount of heat stroke medicines (such as ten drops of water, cool oil, Ren Dan and so on), the construction site to ensure that the supply of boiled water and to strictly ensure that the meals are clean and hygienic. Site equipped with containers, must be in the top of the container plus a layer of insulation to reduce the temperature in the box, as far as possible, the use of fans, air conditioning and other cooling equipment, heat stroke immediately sent to the nearest hospital.
9.3.2 Equipment protection measures
(1) in the construction must adhere to the standardized construction, shall not be unauthorized, barbaric work, really do a good job in the summer construction safety. Each full-time, (part-time) safety officer, the person in charge of construction to strengthen the inspection, strict control, found that the problem is immediately rectified, prevention is better than cure.
(2) In the season of storms and thunderstorms, it is necessary to keep abreast of different levels of meteorological information released by the meteorological department, do a targeted job of evacuation of personnel and placement of equipment, stop the construction before the storms and thunderstorms and reasonably reinforce or place the piling equipment, and do not be paralyzed and careless and take chances.
10, civilized construction measures
10.1 Management of site appearance
1. Management of site appearance of the construction site, the implementation of zoning area and block package, the responsibility of the area of the signboards, the management of the living areas of the provisions of the signboards to show all.
2. The development of construction site life hygiene management, inspection, evaluation and assessment system.
3. Production safety work on the wall, to do seven cards and a map (project basics, the project's responsible personnel name plate, safety six disciplinary card, safety counting card, ten safety measures, fire prevention card, health notice card and site construction general layout).
4. Site layout of production safety slogans and warning signs, so that no violation.
5. Construction area, office area, living area hanging signs, dangerous areas set up safety warning signs. Traffic signs are set up at the main construction road intersections.
6. Ensure that the surrounding environment is clean and hygienic, so that there is no sewage overflow, no dirt outside the fence, no materials, no garbage dumping.
7. The environment is clean and tidy, the gutters are smooth, the domestic garbage is bagged and transported out in woven bags every day, and the living areas are regularly sprayed with medicinal water to sterilize and remove pests.
10.2 Management of material stacking
1. All kinds of equipment and materials are as far away from the operation area as possible, and are not allowed to be stacked too high, to prevent the collapse of the fall and injury.
2. The incoming materials are stacked strictly in accordance with the designated location of the site layout.
3. On-site materials clerk to do a good job of acceptance of materials (including quantity, quality, warranty), and make a good record (including car number, number of cars, transportation units, etc.).
4. Cement warehouse has management regulations and systems, and listed management. Cement issued by the limit of material receipt, limit issued. Warehouse management personnel to do a good job of cement receipt, issuance, storage of running water ledger.
5. The materials are stacked strictly according to the field layout plan, to eliminate indiscriminate stacking, haphazardly, mixing, especially to eliminate the materials stacked against the fence, behind the billboards, in order to prevent the force caused by the collapse and other accidents.
10.3 Management of construction personnel
1. The standards and requirements for the construction of offices, toilets, canteens and dormitories shall be implemented according to the relevant regulations.
2. "Office and dormitory hygiene management system" is formulated to make the construction site neat and hygienic.
3. Office and dormitory are ventilated and bright, with washing facilities and managed by specialized personnel.
4. It is strictly prohibited to connect power sockets or use large-capacity electrical appliances in the dormitory, and the Construction Safety Department conducts regular inspections and supervision.
5. Living areas and construction sites with men's and women's toilets, bathrooms, sewage discharged into the septic tank. Keep clean, smooth drainage, with specialized management.
6. In the living area set up canteen, provide workers and managers of meals. And in accordance with the requirements of the Food Sanitation Law. Meals are unified in the canteen.
7. Construction site tea supply points, tea with sterilization facilities.
10.4 Security Management Measures
1. Obey the owner's management regulations on social security, comprehensive management, family planning, traffic management and environmental protection.
2. Establish a specialized security organization to lead the security work in a unified manner.
3. Set up a guard at the main entrance and strictly implement the entry and exit system. All personnel to enter the site must wear a badge, non-engineering personnel to enter the gate must be registered, contacted through the gatekeeper, to be clear that the reception staff before entering.
4. The staff is limited to the activities of the project within the designated construction area, non-permitted to enter and stay in areas unrelated to the project.
5. Staff are not allowed to work on the site under the influence of alcohol or drunkenness, and they are not allowed to bring prohibited goods into the site in order to maintain the safety of property and personnel.
6. Material vehicles into the unit after loading and unloading, immediately drive away from the site, parked in the designated parking lot.
7. The construction site of valuable materials, important equipment and large-scale equipment to strengthen the management of the strict system, set up protective facilities and alarm equipment to prevent materials from being looting, theft or destruction.
8. Widely carry out legal propaganda and "four defense" education, and improve the workers and masses to defend the project construction and law-abiding conscientiousness.
9. Often carry out safety inspections centered on fire prevention, explosion-proof, anti-theft, plug the loopholes, and take preventive measures in time to find hidden problems and prevent them from occurring.
10. Strengthen the management of outsourcing team, set up a special person responsible for the outsourcing team for the legal system, rules and regulations of education, to participate in the construction of the civilian workers to review, register, receive a temporary residence permit, issued by the work permit, before going to work. Suspicious persons to investigate and understand.
11, environmental protection measures
11.1 health management
1. The construction site is often kept clean and sanitary. Roads are level, solid and smooth with drainage facilities.
2. Materials into the field and soil transportation vehicles without mud and sand, and do not leave along the way.
3. The indoor and outdoor living areas are kept neat and orderly, free of dirt and sewage, and the garbage is centrally stacked and timely cleaned.
4. The cafeteria has a person in charge of hygiene, and strictly enforces the Food Sanitation Law and other relevant systems.
5. Drinking water to ensure the supply of boiled water, drinking utensils hygiene.
6. Toilets on site are cleaned by specialized personnel.
11.2 Pollution Control
11.2.1 Air Pollution
1. Cement and other powder and fine bulk materials, to take indoor (or closed) storage or tight cover, unloading and transportation to take effective measures to reduce dust.
2. The ground of the temporary road on the site is properly treated to prevent road dust.
3. When setting up mixing equipment at the site, install dust-blocking devices.
11.2.2 Water Pollution
1. Oil and waste materials shall not be poured into the neighboring river to avoid pollution.
2. Control the flow of sewage generated by construction to prevent diffusion along the river, and set up sedimentation tanks at reasonable locations to prevent pollution of the environment by sedimentation before discharge.
3. The storehouse where oil is stored on site is treated against seepage and leakage, and measures are taken for both storage and use to prevent running, bubbling, dripping and leaking, which will pollute the water body.
11.2.3 Noise Pollution
1. The construction site in compliance with the "Chinese People's Republic of China *** and the State Construction Noise Limits" to develop appropriate systems and measures to reduce noise.
2. Strong noise, large vibration operations, strict control of operating hours. Must be day and night continuous operation, take measures to reduce noise and vibration, do a good job around the masses, and reported to the relevant environmental protection unit for the record after construction.