Project name: Cangzhou City, Tongxiang Park residential area, the fourth section
Prepared by: Title:
Reviewer: Title:
Approved by: Title:
Construction unit: Cangzhou City, the second construction and installation engineering company
Catalog
1.Preparation of the basis
3.
2. Project Overview and Installation Conditions
3. Hoist Installation Methods
3.1 Installation Site Requirements
3.2 Installation Procedures and Precautions:
4. Commissioning:
5. Technical Requirements in Installation:
6. Inspection Contents
7. Protection of Floor Discharge Platform
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8. Cage protection and safety devices
9. Specific practices of the drive system:
10. Attached wall frame
11. Winch protection shed
12. Acceptance of the material hoist
13. Operation, use and precautions:
1. Preparation of the basis
1.1 The "Building Winch Safety Regulations" (JGJ3329-91)
1.2 "Gantry and derrick material hoist safety technical regulations" (JGJ88-92)
1.3 SBZ1500-C type self-erecting material hoist manual.
1.4 Construction drawings of the fourth section of Cangzhou Tongxiangyuan Residential Area
1.5 Construction organization design of the fourth section of Cangzhou Tongxiangyuan Residential Area
2. Overview of the project and installation conditions
This project is the fourth section of Cangzhou Tongxiangyuan Residential Area: located in Jiefangxi Road of Cangzhou City, and its superstructure system is a cast-in-place steel reinforcement concrete box shear structure with heterogeneous columns. The structure is cast-in-place steel reinforced concrete shaped column frame shear. The building has a basement floor, eleven floors above ground and twelve floors locally.
The construction area of 15# building is 16164m2, the height of layer is 2.9m, the height of eaves of the building is 36.5m, the height difference between indoor and outdoor is 1.2m, the length of the building is 100.85m, the width of the building is 14.4m.
The construction area of 16# building is 12272.32m2, the height of layer is 2.9m, the height of eaves of the building is 36.5m, the height difference between indoor and outdoor is 1.2m, the height difference between indoor and outdoor is 1.2m, and the width of the building is 14.4m. 1.2m, building length 78.65m, building width 14.1m.
20# building project construction area 14178.28m2, storey height 2.9m, building eave height 36.5m, indoor-outdoor height difference 1.2m, building length 92.45m, building width 14.15m.
In the south side of the buildings, installing two elevated Two elevated material hoists are installed on the south side of each building, which are mainly used for the transportation of materials in the main and decorative stages.
3. Installation method of hoist
3.1 Installation site requirements
The elevated hoist should meet the following requirements:
3.1.1 The bearing capacity after pressing material is not less than 80t/m2.
3.1.2 Pouring of C30 concrete, the specific dimensions of which are shown in detail in the accompanying drawings (foundation plan).
3.1.3 The surface of the foundation should be smooth, with the horizontal deviation less than 1.5% and not more than 10mm. the frame should be well protected by zero connection.
3.1.4 In the 4 × 4.5 column installation site within the scope of the drainage should be smooth, there shall be no stagnant water soaked foundation.
3.2 Installation procedures and precautions:
3.2.1 Before installation, first check the verticality of the gantry frame body, the misalignment of the guide rail joints, columns are required to be installed in both directions for the perpendicularity check, the inclination should be guaranteed in the height of the frame 1.5 ‰ or less and not greater than 200mm, less than the standard should be in the bottom frame under the pad adjustment piece until the adjustment meets the requirements. Until.
3.2.2 ground beam and extension legs installed in the foundation adjusted, fixed with screws, will be lifting table to the ground beam above, pay attention to the table set of frames and ground beam mounted on the position of the column.
3.2.3 two columns are fitted with platform sleeve frame holes in the ground beam, adjusted, screw fixed, and respectively, the two lifting pulleys are installed in its upper end fixed.
3.2.4 Self-erecting table elevator in accordance with the correct way of winding rope through the wire rope, lock.
3.2.5 The lifting boom is fitted in the position specified for the jacking table and fitted with the wire rope locked.
3.2.6 Use the manual winch of the platform lifting mechanism to lift the self-elevating platform until the table surface is flush with the upper end surface of the column, so that all eight climbing claws mounted on the platform can be effectively clamped on the standard section of the cross-bracing angle.
3.2.7 The two spare columns are loaded onto the installed and adjusted columns through the rod section lifting mechanism, adjusted and fixed.
3.2.8 Repeat (3.2.6) to bring the table up to the top of the second column and position it with the crawler claw.
3.2.9 Install the winch mechanism in accordance with the relevant regulations (see drive train installation later).
3.2.10 Place the cage, assemble the accessories and install the wire rope.
3.2.11 Repeat (3.2.7) [starting at this point, the transportation of the column is done by lifting and lowering the cage] to reach the required height.
3.2.12 Shelf stability:
The project hoist is used for the main body, renovation when the material transportation, using the connecting wall rod and the building structure connection, the spacing is not more than 9 meters, the top of the building must be set up a group of the upper part of the frame of the free height of 4 meters, and the provisions of the instructions for the use of the requirements of the set of pre-embedded parts or reserved holes, the use of rigid connection, the formation of a stable structure, it is prohibited to frame and Scaffolding connection.
4. Commissioning:
4.1 Installation of lifting cage in the full range of lifting, variable speed, running three times (wedge removed) to verify the stability of the frame, the distance between the two rails to meet the technical requirements and at the same time to observe whether the door is sensitive, do not allow vibration and shock phenomenon.
4.2 Hang the cage away from the ground 100-200mm, adjust the clearance between the guide shoe roller and the frame rail, inside and outside of the same after installing the wedge to achieve the locking, and then lower the lifting pulley to the lower stop, adjust the adjusting bolts to the state of tension. In the rated load will be lifted to the cage from the ground 2-3m high stop, will open the door to lock, adjust the length of the wire rope, the reliability of the brake clamp, the cage does not slide.
4.3 lifting the cage to apply the rated load, make its trial run three times and open the door to self-locking experiment, when the cage is raised to 2-3m height to simulate the rope breakage experiments and its slip trip shall not exceed 100mm.
4.4 in the lifting the cage to take the rated lifting capacity of 125% (according to the 5% of the amount of step-by-step increase for lifting and descending to open the door and stop self-locking experiments), the decline shall not be more than 10cm, downward speed of 30-40m/min requires accurate and reliable action, no anomalies metal structure is not deformed, no cracks and paint peeling and loose connections and other phenomena.
5. Installation of technical requirements:
5.1 the main column is also used as a guide frame, for the cage operation of the rolling guide, the standard section of the joints of the deviation is less than 0.5mm. installation must pay attention to the adjustment.
5.2 column full height vertical deviation should be less than 1‰.
5.3 Each connecting bolt must be firm.
5.4 Aerial installation workers must be licensed, fasten the safety belt, gantry and columns around the 6m prohibit standing in order to prevent objects from falling hurt.
5.5 The installation work is prohibited above four winds.
6. Inspection content
Installation should be specialized inspectors in accordance with the standard requirements for the following tests:
6.1 column verticality test.
6.2 tight connections test.
6.3 check no-load running test.
6.4 Rated load test.
6.5 Simulated rope breaking test.
6.6 25% overload experiment can be put into use only after passing the test.
7. safety protection device
7.1 floor unloading platform protection
floor mouth docking door is installed in the floor channel and frame junction, to prevent the cage operation is not yet in place outside the channel loading and unloading of materials occurring outside the accident of falling from a height. Docking railing is adopted, and the material strength of the crossbar and the vertical bar is in accordance with the provisions of the current Code of Practice for Structural Loading of Buildings, and it can withstand 1000 N/m horizontal load.
The unloading platform board using wooden scaffolding board, to be laid horizontally, paved, paved, paved, paved, forbidden to use the steel template for the platform board, platform on both sides of the 1.2m protective railing, from the platform board 0.6m high, set up protective railing, both sides of the net protection, the upper and lower application of vertical nets tied rope to help secure, each layer of unloading the inside, should be set up to protect the door height of 1.2m, the width of the inlet with the same.
7.2 feeding mouth protection shed
protection width is greater than the width of the outside of the hoist, the length of 6 meters, the top of the full 5cm thick scaffolding boards, the side of the full hanging mesh net protection.
8. Cage protection and safety devices
8.1 cage: cage to be able to withstand all the load test GB/10056 provisions. Cage protection top set 50mm thick wooden board protection layer, can withstand 0.5KN point load and any 0.4m2 area of 1.5KN uniform load.
Cage in the in and out of the material safety door open, vertical transportation closed, at the same time in the well frame of the in and out of the material mouth to set up a safety protection door, when the cage rises with the cage rising naturally fall protection door, cage down to the ground when the feed port protection door automatically rise up, the protection door and lifting the cage to form a linkage device.
8.2 dynamic load broken rope insurance device: when the cage in the lifting of the main rope suddenly pull off, broken rope insurance device should work, will be reliably stopped and fixed in the frame, its slide trip in the cage full load shall not exceed 1 meter.
8.3 safety stop device: lifting cage should be equipped with safety stop device, device and door linkage, when the door is opened at the bottom corners of the cage each extends a bumper, bumper on the fixed gantry tic-tac-toe frame, load through the tic-tac-toe frame unloading to the ground, when the door is closed, bumper retracted to the bottom corners of the cage, lifting disk can be up and down operation.
8.4 Installation of over-height limiter: the device is set at the highest position where the cage is allowed to be lifted. The over-range of the cage (the distance from the highest position of the cage to the lowest part of the ceiling beam) is 4 meters. When the cage rises to the limit height, the limiter that action, cut off the power supply in time.
8.5 Lower limit limiter: before the cage touches the buffer, the limiter can act, when the cage falls to the lowest limit position, the limiter automatically cuts off the power supply, so that the cage stops falling.
8.6 buffer: set up buffer in the bottom pit of the frame, when the cage acts on the buffer with rated load and specified speed, it can bear the corresponding impact force.
8.7 Overload limiter: when the party load reaches 90% of the rated load, an alarm signal can be issued. When the load exceeds the rated load, cut off the power supply for hoisting.
8.8 Communication device: when the driver can not clearly see the operator and signaling commanders, must be added communication device, the communication device must be a closed-circuit two-way electrical communication system, the driver can hear the contact of each station, and can speak to each station.
9. drive system specific practices:
9.1 winch with ground anchor to be fixed to prevent sliding or tipping when working, the ground anchor buried depth of 2.5m, the winch should be anti-rope slippage device, ground anchor and winch pulling the use of first-class round steel fixed firmly.
9.2 The wire rope should be arranged neatly on the reel without biting the rope and mutual pressure strangulation, and the number of laps of the wire rope on the reel in operation should be at least not less than 3 laps, and the wire rope should not be lengthened for use.
9.3 wire rope on the ground part shall not drag the ground, should be set drag roller.
9.4 wire rope application supporting the sky wheel and ground wheel, should be well maintained, there shall be no serious kinking, deformation, broken wire, rusty rope, lack of oil phenomenon, is strictly prohibited the use of dismantling and reduction of the length or scrap wire rope.
10. Attached wall frame
10.1 frame height of 12 meters in the second section of the column attached to the pipe set up the first attached wall frame, and then set up every two layers of an attached wall frame, set up one in the top layer.
10.2 Rigid connection is used between attached wall frame and scaffolding, and form a stable structure, which shall not be attached to the scaffolding. Tying with lead wire is strictly prohibited.
10.3 The attached wall frame is made of steel pipe with the same material as scaffolding.
10.4 The practice of connecting structure with the building is shown in the attached drawing.
11. winch protection shed
should be set up stereotyped protection shed, protection shed should have rain, smash, sun protection measures, protection shed in addition to the side facing the hoist is not closed outside the rest of the three sides should be enclosed.
12. material hoist acceptance
After the installation, the person in charge of the project to organize the acceptance of the relevant personnel, and the acceptance of the acceptance of the situation into the acceptance form, after passing the inspection and delivery of use.
13. Operation and use and precautions:
13.1 winch operator should be dedicated to the machine, licensed, familiar with the technical performance of the equipment, can master the operating procedures of the winch, wear protective gear during operation.
13.2 Before driving, the driver should check the structure of the frame, power line, equipment zero, rope, ground anchor, stopping device, protective door, etc. to meet the requirements before driving.
13.3 The material hoist is strictly prohibited from overloading operation.
13.4 cage lifting, cage under the people are not allowed to stand, not allowed to ride the cage up and down. After loading, the loading personnel should be far away from the material hoist, and other kinds of personnel are not allowed to probe from the shaft.
13.5 unloading must wait until the cage stops, the operator can open the protective door on the cage unloading. After unloading, the operator shall close the protective door before the winch operator can lower the cage.
13.6 the cage lifting has the unified command signal, by the construction site complete and to the operating personnel (the operator, the command, the operator) for the briefing, the signal is not clear, the operator can refuse to work.
13.7 operation suddenly power outage, the operator should immediately pull off the power supply and the cage to the ground. After the cage unloading or lifting heavy objects need to stay in the air suspended, in addition to the use of the brake, and should be ratcheted safety card, and the driver shall not leave the post.
13.8 The cage stopping device, brake pads, wire ropes and handle positioning bolts shall be checked frequently in use. Do not use hand, foot pull pedal wire rope in operation, wire rope up to the degree of obsolescence in time to replace.
13.9 work is completed or suspended operations, the operator must be the cage to the ground, cut off the power supply, lock the gate box before leaving the post.
13.10 When the safety device communication device is found to be out of order, stop the machine immediately to repair. Do not use the limit device during operation.