Specifications
Construction
Plan
Case
XX Engineering Company
Year-month
I. Basis for Preparation:
Design drawings for **Building project provided by a design limited company
Organizational design of the XX building project
Code for Quality Acceptance of Construction of Building Foundation Works (GB50202-2002)
Code for Construction and Acceptance of Human Defense Works (GBJ134-90)
Building Construction Manual (Microform Second Edition)
Code for Quality Acceptance of Construction of Concrete Structures (GB50204-2002)
Technical Regulations for Safety of Construction Work at High Places (JGJ) Technical Regulations for Safety of Operation (JGJ80-91)
Technical Regulations for Concrete Structures of High-rise Buildings (JGJ3-2002)
Regulations for Data Management of Construction and Installation Projects (DBJ01-51-2003)
Quality Assessment Criteria for the Great Wall Cup of Architectural Structures (DBJ/T01-69-2003)
Second, Project Overview:
**The building block has a total construction area of 112402.9m2. 4 floors underground and 22 floors above ground. Eave height 87.65m. indoor and outdoor height difference -0.45m. ±0.000=45.500m, for all cast-in-situ frame-shear wall structure.
The seismic grade of the structure is: frame-shear wall on the third and fourth floors of the ground floor, Grade III; frame-shear wall on the second floor of the ground floor and above, Grade I. The structure has a height of 87.65m at the eaves.
The top beam of each floor above the third basement level spanning more than 10 meters is made of unbonded prestressed concrete floor cover.
Third, the structural dimensions of each part of the project:
** underground part of the building:
Structural form Frame-shear wall
Storey height (m) The fourth floor of the underground: 4.1
The third floor of the underground: 3.85
The second floor of the underground: 3.65
The first floor: 6.4
Ground floor mezzanine:2.0
Slab thickness (mm) Basement:2500
Fourth basement:300
Third basement:200
Second basement:200
Basement level:200
Ground floor:200
Ground floor mezzanine:200
Wall thickness ( mm) Exterior wall: 600
Interior wall: 800, 700, 600, 400, 300, 200
Limit wall: 400, 300, 200
Section size of frame column (mm) 1800×1300, 1700×1300, 1300×1300, 1200×1200, 1000×1000, 700×700
Framework column section size (mm) 1800×1300, 1700×1300, 1300×1300, 1200×1200, 1000× 1000, 700×700
Beam section size (mm) 600×1200, 600×1000, 600×900
2. **The aboveground part of the building:
Structural form Frame-shear wall
Storey height (m) 1-3 storeys : 4.5
4-21st floors : 3.8
22nd floor : 4.5
Slab thickness (mm) 200mm, 120mm
Wall thickness (mm) 200mm, 400mm
Frame column cross-section dimensions (mm) 1800×1300, 1600× 1300, 1500×1300, 1300×1300, 1200×1200
Beam cross-section size (mm) 700×750
Fourth, the construction of the overall arrangements:
Template configuration: in order to ensure the quality of the project, to achieve the goal of excellence, in view of the characteristics of the project, to determine the underground portion of the walls, columns, the roof beams using the laminated wood plywood; above ground walls, columns using large steel moldboard, roof, beams using laminated wood plywood, stair treads using steel shaped templates, beams, columns nodes using shaped steel templates.
According to the schedule requirements, considering the characteristics of the structural components template, the underground part of the walls and columns consider 4/3 layers of templates, the top plate, beams consider three layers of templates; the above ground part of the A, B building blocks are each equipped with a set of large templates (see **Building Steel Shaped Template Program), the top plate, beams consider three layers of templates.
Running section division:
The above ground and underground division is detailed in "** Building Construction Organization Design".
Five, construction preparation:
Technical preparation:
(1), according to the requirements of the construction organization design and construction drawings to calculate the number of template configurations, to determine the construction method of template construction in various parts of the template, the preparation of template design and construction program.
(2), the technical person in charge of the building and the foreman in charge of the operating team to do a good job of the program, technical briefing pre-service training, clear template processing, installation standards and requirements.
(3), according to the construction progress, the building technician in advance to formulate the template materials needed to enter the field plan.
(4), the timely organization of steel templates into the field, for the steel templates into the field by the production unit to organize the relevant departments for acceptance, failing to meet the requirements of the resolute withdrawal.
Production preparation:
(1), personnel preparation:
Serial number division of labor Yancheng two construction (people) Nantong four construction (people)
Construction preparation stage wood processing 20 30
Template assembly 30 40
Foundation construction stage Template transportation, installation, demolition 150 200
Template cleaning, Brush release agent 20 25
Main construction stage Formwork transportation, installation, dismantling 120 180
Formwork cleaning, brush release agent 15 20
(2), machinery preparation:
Sequence Name Quantity Sequence Name Quantity
1 Press planer 4 5 Handheld saws 8
2 Circular saws 4 6 Blowers 4
3 Abrasive wheel cutter 8
3 Abrasive wheel cutter 8
3 Abrasive wheel cutter 8
3 Abrasive wheel cutter 8
3 p>3 Abrasive wheel cutter 8 7 Hand drill 6
4 Welding machine 8 8 Spruce machine 6
(3), site preparation:
1. Wooden templates and their attachments and squares are processed in the carpentry workshop; steel templates are processed by the professional manufacturers. In the south side of the construction site dedicated a template stacking area (set in the crane's lifting radius), easy to transport directly to the construction site.
2, wall and column wooden template and steel template without legs should be placed in the template socket frame, socket frame practice see template socket frame erection diagram attached.
(4), transportation preparation: multi-layer plate in the processing area assembled into templates, including column mold, beam gang plate, and then pushed to the site with homemade carts, stereotyped steel templates assembled at the site, on-site installation with tower crane transport.
(5), pre-buried preparation:
a. Frame columns, walls, wooden formwork support molding, ground anchors with 25 of the rebar head length of 400mm (leakage of 200mm from the concrete surface), from the frame columns, walls, 200mm from the root of the wall, 1500mm, 2500mm, 3500mm buried in the first, second, third, and fourth rows, the longitudinal spacing of 1000mm.
b. /p>
b. It is strictly prohibited to pre-buried steel ground anchor in impermeable concrete.
3, template processing:
(1), template processing should be in accordance with the requirements of the template program for processing, the whole template sawing, the edge of the plane with a flat planer planing, and then brush sealing adhesive to extend the service life of the template.
(2), the back flute and the panel and the two contact surfaces of the column hoop should be pressed and planed flat, and the height of the wooden square used in the same template should be strictly consistent to ensure that the panel, the back flute and the column hoop are in good contact and work together.
(3), the joint position between the wooden party should be staggered, joints lap wooden party not less than 500mm.
(4), the keel and the panel must be nailed to the nail head, can not be protruding or concave into the board surface, otherwise the demolding of the concrete is very easy to cause damage to the surface of the concrete, affecting the appearance of the quality of concrete.
(5), on-site pillar mold, such as found between the back flute and the column hoop gap, can be flat steel or wooden wedge into the gap, to ensure that the contact is tight.
(6), the main and secondary keel for the top plate support mold need to be planed to ensure that the support is flat.
4, template assembly:
Template assembly should be in strict accordance with the requirements of the design drawings, specifications and process regulations, to achieve accurate size, solid support, tight joints. The steel shaped template on the ground shall be counted and assembled in time according to the requirements of "Steel Shaped Template Program for ** Building" prepared by **Metal Structure Manufacturing Co.
6, template design and construction methods:
(1), underground template construction methods:
On-site processing of group splicing template:
Template design and checking:
The panels of the template of the wall, frame beams, columns and the top plate are all 15mm-thick laminating wood plywood, and the design calculations for the keel and the pulling joints are detailed in the annexes (the unspecified distances are all center distances below). distances are all center distance).
Wall formwork:
Panel vertical back ribs (50×100 square wood, standing), net distance 200mm.
The spacing of horizontal back flute of formwork (2Φ48×3.5 steel pipe): 500mm (center distance) (400mm in the range of 1,400mm from the ground).
The spacing of vertical back flute of formwork (2Φ48×3.5 steel pipe): 500mm (center distance); tie bolt (M16), spacing 500×500mm.
Beam formwork:
Bottom formwork and panel back flute of side formwork (50×100mm square timber, standing and placed): net distance 200mm; spacing of side formwork standing file (Φ48×3.5 steel pipe): 500mm; when the height of beam is more than 800mm, add one M16 tensile bolt in the middle; more than 1200mm, add two M16 tensile bolts. The bottom of all beam templates are supported by longitudinal bars with a spacing of 1.5mm.
The spacing of cross ribs of the bottom template (Φ48×3.5 steel pipe) is 500mm; when the width of the beam is greater than or equal to 600mm, the spacing is 400mm.
Column template:
The back flute of the template (50×100mm square wood, put on the stand): the net distance is 200mm;
Column clamps (50×100mm square wood, put on the stand): the net distance is 200mm. p>
Column hoop (double Φ48×3.5 steel pipe) spacing:
When b＜1000, the spacing is 400mm, plus one M16 tensile bolt.
1000 ≤ b ≤ 1800, spacing 400mm, plus two M16 tensile bolts.
Top plate template:
Panel back ribs (50×100mm square wood, standing) spacing: 200mm;
Main keel (100×100mm square wood) spacing: 900mm
Steel support (bowl buckled pipe) spacing:
When the plate thickness is 300, 900×900mm;
When the slab thickness is 200, 900×1200mm
(2), wall template:
1), north wall template:
Template system:
Because of the distance from the north side of the wall is too close to the berm piles, so it can't be double-sided support mold, only one-sided support, the outer mold for the wall has already been made for the brick mold, the inner mold of the panel for the 15mm-thick The outer mold of the wall is made of brick, the panel of the inner mold is made of 15mm thick laminated wood plywood, the vertical back ribs of the panel are 50×100 squares (standing), and the horizontal back flute is made of double Φ48×3.5 steel pipes with the spacing of 500mm (400mm in the range of 1,400mm from the ground). The fixing and diagonal bracing of the formwork adopts the special frame for single-side supporting formwork of "Beijing ** Formwork Company", with a spacing of 500.
Embedded parts installation:
①The distance between the ground bolts out of the ground and the concrete wall is 210mm, and the ground bolts are made of steel bars with 25 threads, and the distance between the ground bolts is 300mm. 300mm, buried in the concrete 600mm (foot total length 700mm).
②The foot bolt buried with the ground at an angle of 45 degrees, the site must be buried through the line to ensure that the buried parts in the same line.
3 foot bolts in the pre-embedded should be threaded to take protective measures, wrapped in plastic and tied, so as to avoid the construction of concrete adhering to the impact of screwing the connecting nut on the wire buckle.
④The foot bolt can not be directly welded with the structural reinforcement, in order to ensure that the embedded parts do not run when the concrete is poured, add additional reinforcement in the corresponding parts, the foot bolt is welded on the additional bar.
C. Shelf installation:
①Installation process:
After the reinforcement binding and acceptance→bouncing the side line of the outer wall→combining the template of the outer wall→single-side bracket lifting in place→installation of single side bracket→installation of reinforcing steel pipe (additional steel pipe for the diagonal bracing part of the single-side bracket)
Installation of channel steel of the beam→installation of the embedded system→adjustment of verticality of the bracket→installation of the upper manipulation platform→re-tightenment and checking again Embedded parts system → acceptance after pouring concrete
② together with the exterior wall template, template lower mouth and pre-popped wall edge line alignment, and then install the back of the flute, and with hook bolts will be horizontal double steel pipe back of the flute and the vertical ribs of the wooden square locking. Temporarily support the outer wall formwork with steel pipe.
3) Lifting the single side bracket, lifting the single side bracket from the stacking site to the site, when lifting the single side bracket, it should be put up lightly, when stacking the multi-bay bracket together, it should be stacked neatly with each other on the level site, so as to avoid the deformation of the bracket.
4. The single side bracket which needs to be assembled by the standard and heightened section should be assembled off-site in advance, and then lifted to the site by the tower crane. In order to ensure that the deformation of the single-side bracket is reasonable after being subjected to the side pressure of concrete as far as possible, when the single-side bracket is assembled by the standard section and the raised section, the back seat of the standard section is appropriately padded, and the addition of steel shims can be considered.
⑤ In the straight wall section, after installing every five to six bays of single side bracket, the through-length channel of the interspersed embedded system should be determined according to the actual situation when there is a counter-beam in the bottom plate.
6 After the brackets are installed, install the embedded member system, see the attached diagram of the single-side support mold embedded member system.
⑦Use the back flute connecting buckle to connect the formwork part and the single-side support part into a whole.
⑧Adjust the back support of the single-side bracket until the upper mouth of the template panel is tilted inward toward the wall by about 10mm (when the single-side bracket has no heightening section, the inward tilt is about 5mm), because the template will be displaced backward after the single-side bracket is loaded.
⑨Tighten the embedded force system one last time to ensure that the lower opening of the formwork will not leak when the concrete is poured.
⑩Specialized single-sided support frame must be fixed firmly with the horizontal keel of the wall to prevent the formwork from floating.
D, the template and bracket removal:
①24 hours after the concrete pouring on the outer wall, the first loose bracket after the support, and then loose buried parts.
②Thoroughly dismantle the buried parts, and classified and saved.
③Hang away the single side of the bracket, the template continues to stick to the wall, temporarily supported by steel pipe, but do not support the tight.
④After 48 hours of concrete pouring, dismantle the formwork and observe whether there is any phenomenon of sticking to the formwork, if so, it is necessary to slow down some time before dismantling.
e. Safety requirements for bracket installation:
①The quality of single side bracket is big, workers should be carried out by many people at the same time when setting up the bracket.
②Prevent workers from fatigue.
③After making sure that the single-side bracket is stable, the workers can install the operation platform, and the springboard on the operation platform should be full, and the guards of the operation platform should be set up at least three ways.
④When concrete is poured, workers shall work on the operation platform.
⑤ Control the speed of concrete pouring according to the specification and pour in layers.
2), other wall templates:
a, wall template system:
The underground wall template of this project adopts laminated wood plywood, Φ48×3.5 steel pipe as back
flute, and tensile bolts are fixed.
①The horizontal construction joints at the bottom of the four-layer outer wall of the basement, the backwater zone, and the vertical construction joints of the outer wall are pre-buried with 300×3 water-stopping steel plates, while the horizontal construction joints of the other outer walls are made of 20×30 rubber expansion water-stopping strips. The through circle at the settlement joint of the human defense channel adopts the embedded steel plate waterstop.
②Installation, 50 × 100 vertical back ribs nailed to the panel, the inner horizontal steel flute using two Φ48 × 3.5 steel pipe, spacing 500mm, the outer vertical steel flute using the same specifications of the steel pipe, spacing 500mm, tie bolts using M16 tool-type tie bolts, spacing 500 × 500mm.
③Exterior bolts for waterproofing bolts, the internal wall using M16 ordinary bolts, use pre-pierced 25 plastic sleeve, the plastic sleeve must pass through the template. Waterproof bolts for external wall with M16 tool type tensile bolts, welded in the middle of the water stop ring, water stop ring with 3mm thick 50 x 50mm steel plate, double-sided welding, full weld without gaps.
b, wall template site installation:
①Template through the wall bolts set, horizontal spacing 500mm, vertical spacing of 500mm, 200mm from the template up and down the mouth; the first horizontal and then set up vertically double rows of double Φ48 × 3.5 steel pipe, fixed steel pipe with municipal use of thicker card, and then use the M16 tensile bolts fixed; the wall vertically set up three steel pipe Three steel pipe diagonal braces are set vertically in the wall (spacing 1000mm along the longitudinal direction), which are supported by the horizontal steel pipe back flute at 200mm, 1200mm and 2200mm from the top to the bottom respectively (if the height of the wall is more than 5 meters, 4 diagonal braces will be added), and the lower opening of the template is firmly plugged with the Φ25 rebar head pre-buried before the pouring of the concrete. The flatness and verticality are controlled within 2mm; after adjusting the verticality of the formwork, tighten the bolts through the wall; the two ends of the steel pipe diagonal braces are fixed with fasteners, so as to pull the formwork and prevent the formwork from floating. Specifically, see the attached drawing of the outer wall template support diagram and the inner wall template support diagram.
②Interior wall using ordinary bolts, Φ25 plastic casing, casing must be used through the mold
plate, the use of water-stop bolts on the exterior wall.
③The template installation is completed, check the fasteners, bolts are tight, the template splices and whether the mouth is tight, and then pre-inspection procedures.
④When removing the template of the outer wall, remove the template first, then take out the connecting head of the tie bolts, and finally use the waterproof mortar to make up the level.
⑤ In order to prevent the floating of the formwork when pouring concrete, there is one flower basket bolt on each side of the wall, the lower part is fixed with the pre-embedded steel ring, and the upper part is tied on the horizontal cross rib 300mm away from the upper mouth of the formwork.
6 When supporting the mold of the inner wall, wear the casing of the tensile bolts first, and then wear the tensile bolts. Cut off the casing after dismantling the mold and use cement mortar to smooth it.
⑦Wall supporting the mold before the root must be 50mm wide, 20mm thick cement mortar leveling, cement mortar is strictly prohibited to eat into the concrete. Then paste the sponge sealing strip, support the template, squeeze to ensure that no leakage of slurry.
C, curved template:
Because the curvature of the curved wall is relatively slow, so the template panel is made of 15mm thick wood plywood, the vertical ribs of the panel are 50×100mm wooden squares, with a net spacing of 200mm; the horizontal horizontal ribs are made of double Φ48×3.5 steel tubes, with a spacing of 500mm (within the range of 400mm from the ground at a distance of 1400mm), and the outer vertical flutes are made of the same specification steel tubes, with a spacing of 500mm. The same specification steel pipe is used for the outer vertical steel flute with a spacing of 500mm, and the tensile bolts are tool-type tensile bolts (water stop bolts on the outer wall) of M16 with a spacing of 500×500mm. the horizontal horizontal ribs are curved according to the curvature of the wall.
(3), frame column template:
a, frame column template system:
①frame column template consists of column body, column hoop, column body consists of four side molds, using 15mm thick wood plywood, with 50×100mm wood square for vertical back flute, net distance 200mm.
②column hoop for double Φ48×3.5 steel pipe.
When the section ≤ 500, the spacing 400mm (350mm from the lower mouth within 1400mm);
500
1000 ≤ b ≤ 1800, spacing 400mm, plus two M16 tie bolts.
③Column mold support adopts Φ48×3.5 steel pipe frame. The steel pipe is tightened with the ground anchor, and in order to prevent the column template from floating, one flower basket bolt is added on each side.
④When supporting column head and column hoop, the concrete of the construction joint on the top of the column is chiseled and cleaned up first, and then sponge strips are pasted on the inside of the side mold of the column head, and the side mold of the column head is close to the body of the column, and is fixed to the support frame of the beam through adjustable bracket support.
b, frame column template installation:
①Installation of column template: through the row of columns, first install the two ends of the column, after correction, fixed, pull through the line correction of the middle columns. Four pieces of column mold, first install two pieces, and then install the other two pieces. The yin and Yang corner joints are pasted with one-sided adhesive sponge strips to prevent slurry leakage.
②Installation of column hoops: double Φ48 × 3.5 steel pipe for the column hoops, the first column hoops from the template 200mm, the other column hoops spacing up to 400mm, fixed with bolts, tightening on all sides, the column width of less than 1,000mm in the middle of the set a M16 bolts, column width of ≥ 1,000mm in the middle of the set two M16 bolts.
③Installation of column template support: As the columns form a grid when supporting the mold, thus the columns are pulled and supported each other, four horizontal support for the upper and lower mouths, the upper mouth, the lower mouth diagonal each one; if the columns are pulled each other is more difficult to consider the use of pre-buried anchors for diagonal support, three diagonal braces on each side, the specific support method is shown in the accompanying diagram frame column template support.
④In order to prevent the template from floating, set a flower basket bolt on each side, the same practice as the wall.
(4), frame beam template:
a, frame beam template design:
Beam bottom mold, side mold using 15mm thick wood plywood, 50mm × 100mm square wood back ribs put. The diagonal brace, side flute and bottom flute are Φ48×3.5 steel pipe. The spacing between side flutes and bottom flutes is 500mm. Φ48×3.5 steel pipe is used for beam support, and the spacing between the uprights is 500mm. see the attached drawing for beam formwork support. Span equal to or greater than 4m beam bottom mold, top plate template arch 1-3‰.
b, the installation of beam template:
①The beam pillar adopts double rows of Φ48×3.5 steel pipe, and the pillar is equipped with horizontal tie rods, two along the direction of the axis of the beam, and one every 1.5m along the direction of the height of the pillar, and the transverse and longitudinal sweeping rods shall be set up.
②Pillar above the Φ48 × 3.5 steel pipe support fixed beam side template, side flute, diagonal bracing, bottom flute with fasteners between each other fixed firmly, under the pillar pad 50 * 250 board.
3) The joints between the top plate template and the beam side molds, and the joints between the beam side molds and the beam bottom molds are equipped with one-sided sticky sponge strips to prevent slurry leakage.
(6) top plate template:
a, top plate template design:
①15mm thick wood plywood, 50 × 100mm square wood for the secondary keel (standing), the net distance of 200mm.
②100 × 100mm square wood for the main keel, plate thickness 300, 200, spacing of 900mm.
2 100 × 100mm square wood for the main keel, plate thickness 300, 200, spacing of 900mm. the corresponding support system is Bowl buckle frame, grid were 900 × 900mm, 900 × 1200mm. primary and secondary keel and square wood, template contact surface are required to planing.
b, install the top plate template:
①Before supporting the mold, from the building 1m line upward measurement of the top plate elevation, and the bottom line of the plate popped in the wall mouth, remove excess wall concrete, pick to the bottom line of the plate above the 5mm, in order to make the bottom plate mold and the wall molding concrete hit tightly, cut with a lucite machine, to ensure that the contact surface is on a horizontal line. ② support mold, the pillar should be vertical, in the ground bouncing line, to ensure that the upper and lower pillars in the same vertical center line. Pillar under the pad 50 * 250 board.
3 from the side of the span side of the installation, the first row of keel and strut, temporary fixed and then installed the second row of keel and strut, in turn, row by row installation. Pillar set horizontal tie rod, unidirectional setting along the main keel direction of the top plate, the same spacing as the pillar. Along the direction of layer height, 1.5m set one. Horizontal tie rod top wall point must be padded with square wood, the pillar on the main and secondary keel store.