carry out

worker

square

situation

XX engineering company

Date, year and month

I. Compilation basis:

* * Architectural engineering design drawings provided by a design company.

Construction organization design of XX building project

Code for Acceptance of Construction Quality of Building Foundation Engineering (GB50202-2002)

Code for Construction and Acceptance of Civil Air Defense Works (GBJ 134-90)

Building construction manual (second edition miniature edition)

Code for Acceptance of Construction Quality of Concrete Structure Engineering (GB50204-2002)

Technical Code for Safety of Working at Height in Building Construction (JGJ80-9 1)

Technical Specification for Concrete Structures of High-rise Buildings (JGJ3-2002)

Code for data management of construction and installation engineering (DBJ0 1-5 1-2003)

Quality Evaluation Standard for the Great Wall Cup Project of Building Structure (DBJ/T0 1-69-2003)

Quality Evaluation Standard for Great Wall Cup Project (DBJ/T0 1-70-2003)

Second, the project overview:

* * The total construction area of this building is 1 12402.9 square meters ... four floors underground and twenty-two floors above ground. The cornice is 87.65m high, and the indoor and outdoor height difference is-0.45 m. 0.000 = 45.500 m, which is a fully cast-in-place frame-shear wall structure.

The seismic grade of the structure is: three or four-story underground frame shear wall, Grade III; Frame shear wall above two floors underground, one floor.

Unbonded prestressed concrete floor is used for the girder erection above three floors underground, with a span of10m.

Three. Structural dimensions of each part of the project:

* * Underground part of the building:

Frame-shear wall structure form

Height of four floors underground (m): 4. 1

Underground third floor: 3.85

Underground second floor: 3.65

Basement 1: 6.4

Underground interlayer: 2.0

Thickness of bottom plate (mm):2500

Fourth floor underground: 300.

Underground third floor: 200

Second floor underground: 200

Basement 1: 200

Underground interlayer: 200

Thickness of external wall (mm):600

Interior wall: 800,700,600,400,300,200.

Airport wall: 400,300,200

Section size of frame column (mm) 1800× 1300, 1700× 1300, 1300× 1238.

The beam section dimensions (mm) are 600×1200, 600× 1000 and 600×900.

2, * * the ground part of the building:

Frame-shear wall structure form

Floor height (m) 1-3: 4.5

4-2 1 floor: 3.8

22nd floor: 4.5

Plate thickness (mm) 200mm,120mm.

Wall thickness (mm) 200mm, 400mm

Section size of frame column (mm) 1800× 1300, 1600× 1300, 1500× 1300, 1300.

Beam section size (mm) 700×750

Fourth, the overall arrangement of construction:

Formwork configuration: In order to ensure the quality of the project and achieve the goal of creating excellence, according to the characteristics of this project, it is determined that the walls, columns and top beams of the underground part are covered with plywood; Large steel formwork is used for ground walls and columns, wood plywood is used for roofs and beams, steel formwork is used for stair treads, and steel formwork is used for beam-column joints.

According to the schedule requirements, considering the characteristics of formwork for structural members, 4/3-layer formwork is considered for underground walls and columns, and 3-layer formwork is considered for roof and beam; A set of large formwork shall be provided on the ground of Buildings A and B (see "Steel Formwork Scheme for Building * *" for details), and three-layer formwork shall be considered for the roof and beam.

Division of running water section:

See "Construction Organization Design of * * Building" for the above-ground and underground division.

Five, construction preparation:

Technical preparation:

(1), according to the requirements of construction organization design and construction drawings, calculate the number of template configurations, determine the template construction method of each part, and prepare the template design and construction scheme.

(2) The technical director of the building number and the foreman in charge shall conduct pre-job scheme training and technical disclosure for the operation team, and define the standards and requirements for template processing and installation.

(3) According to the construction progress, the technician of the building number shall prepare the mobilization plan of the materials required for the template in advance.

(4), timely organize steel template comes into play, for steel template comes into play by the production unit to organize relevant departments for acceptance, can not meet the requirements of resolutely exit.

Production preparation:

(1), personnel preparation:

No. Branch Yancheng Second Construction (Person) Nantong Fourth Construction (Person)

Wood processing in construction preparation stage 20 30

Template assembly 30 40

Transportation, installation and removal of formwork in foundation construction stage 150 200

Template cleaning, besmear brushs release agent 20 25

Transportation, installation and removal of formwork in main body construction stage 120 180

Template cleaning and release agent brushing 15 20

(2), mechanical preparation:

Serial number name quantity serial number name quantity

1 planer 4 5 portable saw 8

2 circular saw 4 6 blower 4

3 grinding wheel cutting machine 8 7 hand drill 6

4 welding machine 8 8 marble machine 6

(3) Site preparation:

1, processing wood formwork and its accessories and square timber in the wood factory; Steel formwork is made by professional manufacturers. Template stacking area (within the hoisting radius of tower crane) shall be set on the south side of the construction site to facilitate direct transportation to the construction site.

2. Wooden formwork for wall column and steel formwork without legs should be placed in the formwork socket frame. For the socket bracket, please refer to the schematic diagram of template bracket installation and attached drawings.

(4) Preparation for transportation: the multi-layer boards are assembled into templates in the processing area, including templates and beam side plates, and then pushed to the site by self-made trolleys. The finalized steel formwork is assembled on site, and the site installation is hoisted by tower crane.

(5), embedded preparation:

A. When setting up wooden formwork for frame column and wall, the length of steel bar head of ground anchor 25 is 400mm (200mm exposed from concrete surface), and the first, second, third and fourth rows are buried 200mm away from frame column and wall root, 1500mm, 2500mm and 3500mm, and the longitudinal spacing is1000 mm.

B. It is forbidden to bury reinforced ground anchor in impermeable concrete.

3, template processing:

(1), template processing must be carried out in accordance with the requirements of the template scheme. After sawing the whole template, the edge should be planed flat with a planer, and then the edge sealant should be applied to prolong the service life of the template.

(2) The two contact surfaces of the back stare blankly and the panel and column hoop should be planed and leveled, and the wood square height used on the same template should be strictly consistent to ensure that the panel, back stare blankly and column hoop are in good contact and work together.

(3), the joint position between wood square should be staggered, wood square joint lap not less than 500 mm ..

(4) The nail head connected with the keel and the panel must be nailed to death, and cannot protrude or sink into the panel, otherwise the concrete surface will be easily damaged when the formwork is removed, which will affect the appearance quality of the concrete.

(5) If there is a gap between the back stare blankly and the column hoop, flat steel or wooden wedge can be inserted into the gap to ensure close contact.

(6) The main and secondary keels for roof formwork support shall be planed to ensure smooth support.

4, template assembly:

Template assembly should be carried out in strict accordance with the requirements of design drawings, specifications and process regulations, so as to achieve accurate size, stable support and tight flat-fell seam. The ground steel formwork shall be counted and assembled in time according to the * * building steel formwork plan compiled by * * Metal Structure Manufacturing Co., Ltd.

Six, template design and construction methods:

(a), the underground template construction method:

On-site processing and assembly template:

Template design checking calculation:

Panels of wall, frame beam, column and roof formwork are all laminated wood plywood with a thickness of15 mm. See the attachment for the design and calculation of keel and pull connection (the distance not specified below is the center distance).

Wall template:

Panel vertical back rib (50× 100 square timber, upright), with a clear distance of 200mm.

Spacing between horizontal back beams of formwork (2 φ 48× 3.5 steel pipes): 500mm (center spacing) (400mm from the ground 1400mm).

Spacing of formwork vertical back stare blankly (2 φ 48× 3.5 steel pipes): 500mm (center distance); Pull bolts (M 16) with a spacing of 500×500mm.

Beam template:

Back stare blankly of bottom formwork and side formwork panel (50× 100mm square timber, upright): the clear distance is 200mm；; Vertical side formwork (φ 48× 3.5 steel pipe) spacing: 500mm；; When the beam height is greater than 800mm, add an M 16 bracing bolt in the middle; If it is greater than 1200mm, add two M 16 opposite bolts. The middle of the bottom of all beam formworks is supported longitudinally by a tie rod, and the support spacing is1.5mm.

Spacing of transverse ribs (φ 48× 3.5 steel pipes) of bottom die: 500mm；; When the beam width is greater than or equal to 600mm, the spacing is 400 mm.

Column template:

Template back stare blankly (50× 100mm square timber, upright): clear distance of 200mm；;

Column hoop (double φ 48× 3.5 steel pipe) spacing:

When B < 1000, the spacing is 400mm, and an M 16 opposite bolt is added.

When 1000≤b≤ 1800, the spacing is 400mm, and two opposite bolts of M 16 are added.

Roof formwork:

Distance of back reinforcement of panel (50× 100mm square timber, standing): clear distance of 200mm；;

Main keel (100× 100mm square timber) spacing: 900 mm.

Spacing of steel bracket (bowl buckle tube):

When the plate thickness is 300, 900×900mm；; ;

When the plate thickness is 200, it is 900× 1200mm.

(2), wall template:

1), north wall template:

Template system:

Because the distance between the north wall and the slope protection pile is too close, the formwork can not be supported on both sides, but only on one side. The external formwork of the wall is brick formwork, the panel of the internal formwork is 15mm thick laminated wood plywood, the vertical back reinforcement of the panel is 50× 100 square meters (vertical reinforcement), and the horizontal back reinforcement is double φ 48× 3.5 steel pipes with a spacing of 500mm (65438 from the ground). Formwork is fixed and supported by the single-sided formwork support special frame of "Beijing * * Formwork Company" with a spacing of 500.

Installation of embedded parts:

(1) The distance between the anchor bolt and the concrete wall is 2 10mm, and the anchor bolt is made of 25 # threaded steel bar. The anchor spacing is 300mm, and the concrete is 600mm (the total length of the anchor is 700mm).

(2) Built-in parts of anchor bolts form an angle of 45 degrees with the ground, and the built-in parts on site must be pulled to ensure that the built-in parts are in the same straight line.

(3) Before the anchor bolts are embedded, protective measures should be taken for the threads, and they should be wrapped and bound with plastic sheets, so as to avoid the concrete sticking to the threads during construction and affecting the tightening of the connecting nuts.

(4) The anchor bolt cannot be directly spot-welded with the main reinforcement of the structure. In order to ensure that the embedded parts will not shift during concrete pouring, additional steel bars are added at corresponding positions, and anchor bolts are spot-welded on the additional steel bars.

C, shelf installation:

① Installation process:

After the acceptance of steel binding → play the outer wall sideline → close the outer wall formwork → hoist the unilateral support in place → install the unilateral support → install the reinforced steel pipe (additional steel pipe for the diagonal part of the unilateral support) → install the pressure beam channel steel → install the built-in system → adjust the verticality of the support → install the operating platform → tighten and check the built-in system again → pour concrete after acceptance.

(2) When the external wall formwork is closed, the lower mouth of the formwork is aligned with the pre-laid wall, and then the back stare blankly is installed. The horizontal double steel pipe back stare blankly is locked with the vertical rib wood square with hook bolts. Temporary short-circuiting of external wall formwork with steel pipe.

(3) Lifting the unilateral support, and lifting the unilateral support from the site to the site. When lifting the one-sided bracket, handle it gently. When multiple supports are stacked together, they should be neatly stacked on a flat ground to avoid deformation of the supports.

(4) Unilateral supports that need to be assembled by standard section and heightening section should be put on the site in advance, and then transported to the site by tower crane. In order to ensure the reasonable deformation of the unilateral support under the lateral pressure of concrete as much as possible, when the unilateral support is assembled by standard section and heightening section, the back seat of the standard section should be properly padded, and steel gasket can be considered.

⑤ After installing five or six unilateral supports in the opposite wall section, insert the long channel steel of embedded parts system. When the bottom plate has beams, it should be determined according to the actual situation.

⑥ After installing the bracket, install the built-in system, as shown in the attached figure.

⑦ Connect the template part and the one-sided bracket part into a whole with the back-edge connecting buckle.

⑧ Adjust the rear support of the unilateral support until the top of the formwork panel inclines to the wall about 10mm (when the unilateral support has no heightening section, it inclines about 5mm), because the formwork will move backwards after the unilateral support is stressed.

Pet-name ruby finally tighten a stress system, to ensure that when concrete pouring, template mouth will not leak slurry.

Attending the special single-sided support frame must be fixed firmly with the horizontal keel of the wall to prevent the template from floating.

D, template and bracket removal:

(1) After 24 hours of external wall concrete pouring, loosen the bracket first, then loosen the support, and then loosen the embedded parts.

(2) Thoroughly dismantle embedded parts and store them in categories.

(3) Stay away from the unilateral support, and continue to stick the template on the wall, and temporarily support it with steel pipes, but don't hold it tightly.

(4) After 48 hours of concrete pouring, dismantle the formwork and observe whether there is mold sticking. If so, it needs to be dismantled later.

E. Safety requirements for bracket installation:

(1) One-sided support is of great quality, so workers must erect the support by more than one person at the same time.

(2) prevent workers from fatigue.

(3) The operator must ensure that the unilateral support is firm before installing the operating platform. The springboard on the operating platform must be fully paved, and there are at least three guardrails on the operating platform.

(4) When pouring concrete, workers should work on the operating platform.

(5) According to the specification requirements, control the concrete pouring speed and pour in layers.

2), other wall template:

A, wall template system:

The formwork of underground wall in this project adopts wood plywood, and the backing is φ 48× 3.5 steel pipe.

Stared blankly for a moment, to pull the bolt.

(1) The horizontal construction joint, post-pouring belt and vertical construction joint of the bottom four-story external wall are embedded with 300×3 water-stop steel plates, and the horizontal construction joints of the other external walls adopt 20×30 rubber expansion water-stop belts. The through ring at the settlement joint of civil air defense passage adopts embedded steel plate water stop.

(2) When installing, nail 50× 100 vertical back reinforcement on the panel, use 2 φ 48× 3.5 steel pipes for the inner horizontal steel stare blankly, with a spacing of 500mm, use the same steel pipes for the outer vertical steel stare blankly, with a spacing of 500mm, and use M 16 tool-type pull bolts for the pull bolts, with a spacing of 500mm.

(3) The external wall bolts are waterproof bolts, and the internal wall adopts M 16 ordinary bolts. When in use, a plastic sleeve with a diameter of 25 should be put in advance, and the plastic sleeve must pass through the template. M 16 tool bolts are used for waterproof bolts of external walls, and a water stop ring is welded in the middle. The water stop ring is made of 50×50mm thick 3mm steel plate, which is welded on both sides without leaving gaps.

B, wall template site installation:

(1) The setting of formwork wall bolts, the horizontal spacing is 500mm, the vertical spacing is 500mm, and the distance from the formwork opening is 200mm；; First, two rows of double φ 48× 3.5 steel pipes are horizontally erected, and then they are erected. The municipal government uses thicker clips to fix the steel pipes, and then uses M 16 opposite bolts to fix them. The wall is vertically provided with three steel pipe supports (longitudinal spacing 1000mm), which are respectively supported on horizontal steel pipes of 200mm, 1200mm and 2200mm from top to bottom (four supports are added when the height of the wall exceeds 5m), and the bottom of the formwork is fastened with φ 25 steel bar heads embedded before concrete pouring. Flatness and verticality shall be controlled within 2mm; After the formwork is adjusted vertically, tighten the wall bolts; Both ends of the steel pipe support are fixed with fasteners to hold the template and prevent the template from floating. For details, please refer to the attached external wall formwork support diagram and internal wall formwork support diagram.

② Ordinary bolts and φ 25 plastic sleeves are used for the interior wall, and the sleeves must pass through the mold when used.

Water stop bolts are used for plates and external walls.

(3) After the template is installed, check whether the fasteners and bolts are fastened, whether the template flat-fell seam and the lower mouth are tight, and then go through the pre-inspection procedures.

(4) When the external wall formwork is dismantled, dismantle the formwork first, then take out the bolt joint, and finally fill it with waterproof mortar.

⑤ In order to prevent the formwork from floating when pouring concrete, pull a basket bolt on each side of the wall, fix the lower part with embedded steel rings, and tie the upper part to the horizontal cross rib 300mm away from the top of the formwork.

6. When shuttering the interior wall, first wear the sleeve of the opposite bolt, and then wear the opposite bolt. After form removal, cut off the casing and smooth it with cement mortar.

All landowners wall shuttering, roots must be leveled with 50mm wide and 20mm thick cement mortar, and it is forbidden to eat cement mortar into concrete. Then, after pasting the sponge sealing strip, set up the template and squeeze it tightly to ensure no slurry leakage.

C, circular arc template:

Because the radian of the arc wall is relatively slow, the formwork panel is made of wood plywood with a thickness of 15mm, with vertical ribs of 50× 100mm and a clear distance of 200mm；; The horizontal transverse ribs are made of double φ 48× 3.5 steel pipes with a spacing of 500mm (400mm from the ground within1400mm), the outer vertical steel ribs are made of steel pipes of the same specification with a spacing of 500mm, and the pulling bolts are made of M 16 tool-type pulling bolts (external wall water bolts) with a spacing of 500×500mm. Horizontal transverse ribs are bent according to the radian of the wall.

(3), frame column template:

A, frame column template system:

(1) Frame column formwork consists of column body and column hoop. The column body consists of four side forms, with 15mm thick wood plywood and 50× 100mm wood square as vertical back stare blankly, with a clear distance of 200 mm. ..

(2) The column hoop is made of double φ 48× 3.5 steel pipes.

When the section is ≤500, the spacing is 400 mm (350 mm); From the mouth 1400mm range);

When 500 < b < 1000, the spacing is 400mm, and an M 16 opposite bolt is added.

When 1000≤b≤ 1800, the spacing is 400mm, and two opposite bolts of M 16 are added.

(3) Formwork support adopts φ 48× 3.5 steel pipe frame. The steel pipe is fastened to the ground anchor. In order to prevent the column template from floating, each side needs to add a hanging basket bolt.

(4) When supporting the column head and the column hoop, the concrete at the construction joint at the top of the column shall be chiseled clean first, and then a sponge strip shall be attached to the inner side of the column head side formwork, which shall be attached to the column body and fixed with the supporting frame of the beam through the adjustable support.

B, frame column template installation:

① Installation of column formwork: arrange columns in rows, install columns at both ends first, and then correct the middle column after correction and fixation. Four-piece mold, first install two pieces, then install the other two pieces. Stick a single-sided sponge strip at the joint of Yin and Yang angles to prevent slurry leakage.

② column hoop installation: the column hoop is made of double φ 48× 3.5 steel pipes, the first column hoop is 200mm away from the lower mouth of the formwork, and the spacing of the other column hoops is no more than 400mm, which are fixed by bolts and screwed on all sides, with one M 1000 mm bolt in the middle and two M65438 bolts in the middle, and the column width is ≥ 1000mm.

(3) Installation of column formwork support: As grids are formed during formwork support, columns are connected and supported with each other, and there are four horizontal supports at the upper and lower openings, one at the diagonal upper and lower openings; If it is difficult to pull the columns together, you can consider using embedded ground anchors for diagonal support, with three diagonal braces on each side. For specific support methods, see the attached schematic diagram of frame column formwork support.

(4) In order to prevent the formwork from floating, each side is provided with flower basket bolts, which are the same as the wall.

(4), frame beam template:

A, frame beam template design:

Beam bottom formwork and side formwork adopt 15mm thick wood plywood, and 50mm× 100mm square timber as back rib. Bracing, side stare blankly and bottom stare blankly are φ 48× 3.5 steel pipes. The distance between side stare blankly and bottom stare blankly is 500mm. Beams are supported by φ48×3.5 steel pipes, and the spacing between vertical rods is 500mm. See the attached schematic diagram of beam slab formwork support for details. Beam bottom formwork and roof formwork with a span equal to or greater than 4m shall arch 1-3‰.

B, install beam template:

(1) The beam pillar adopts double rows of φ 48× 3.5 steel pipes, and the pillar is provided with horizontal tie rods, two along the beam axis direction, one every 1.5m along the height direction of the pillar, and horizontal and vertical sweeping rods are set.

(2) The beam side formwork is supported and fixed with φ 48× 3.5 steel pipe above the column, and the edge stare blankly, diagonal brace and bottom stare blankly are fixed firmly with fasteners, and the column is padded with 50*250 boards.

(3) The joint between the top formwork and the beam side formwork, and the joint between the beam side formwork and the beam bottom formwork shall be provided with single-sided adhesive sponge strips to prevent slurry leakage.

(6) the roof template:

A, roof template design:

(1) Use 15mm thick wood plywood and 50 * 100 mm square wood as keel (vertical) with a clear distance of 200 mm. ..

(2) 100× 100 mm square timber as the main keel, with a thickness of 300,200 and a spacing of 900 mm ... The corresponding support system is a bowl buckle frame, and the grids are 900×900mm and 900× 1200mm respectively. The contact surfaces of the main keel, the secondary keel, the square timber and the formwork shall be planed.

B, install the roof template:

(1) Before formwork erection, measure the elevation of the roof from the building 1m line, and play the bottom line of the slab on the wall mouth, remove excess wall concrete, and pick it 5mm above the bottom line of the slab, so that the bottom die of the slab collides with the wall forming concrete, and cut it with a marble machine to ensure that the contact surface is on a horizontal line. (2) When shuttering, the column should be vertical, and the line should be played on the ground to ensure that the upper and lower columns are on the same vertical center line. Put 50*250 boards under the column.

(3) Starting from one side of the side span, install the first row of keels and columns, temporarily fix the second row of keels and columns, and install them row by row in turn. The columns are provided with horizontal tie rods, which are arranged along one direction of the main keel of the roof, and the spacing is the same as that of the columns. Set 1.5m along the height direction. The top wall point of the horizontal tie rod must be padded with square wood, and the main and secondary keels are laid on the pillars.