After the step is installed, the step needs to be reinforced with back ridge.
During the assembly of the first floor, the formwork shall be stacked according to the house type and category (wall column, beam plate).
4.
Preliminary construction training and disclosure.
The floor slab (floating platform) support can be removed only after the structure reaches the corresponding strength; Diagonal bracing: used to fix the wall formwork and adjust the horizontal position and verticality of the wall formwork.
During the installation of wall formwork, pay attention to the protection of positioning reinforcement to avoid the failure of positioning reinforcement.
（2） Welding of positioning reinforcement welding of positioning reinforcement formwork positioning reinforcement adopts Ф 10.
construction preparation (I) adequate technical preparation is the premise to ensure normal construction and production, and it is also the basis to ensure construction quality.
The aluminum formwork assembly shall implement the fixed person and post system.
After the concrete is vibrated, the cover plate at the vibrating opening shall be installed and the back ridge shall be reinforced; 3.
Deepening of aluminum formwork structure drawings (including hanging under door and window lintels, one-time pouring of some secondary components, pressing grooves of door and window pull pieces, water and electricity pressing grooves, and reservation of water and electricity openings); 2.
The floor aluminum formwork is composed of keel, plate support and plate formwork, and the support upright is set under the plate support; 2.
Pin layout principle: pins shall be set at both ends of the formwork (slot C), and the spacing between pins in the middle shall not be greater than 300mm; 4.
The beam formwork is connected with the shear wall formwork through C slot.
Each unit must be equipped with 3 ~ 4 installation personnel, and the public area (staircase and elevator room) must be equipped with 2 ~ 3 people to be responsible for assembly.
The stair aluminum formwork adopts the fully closed assembly process, which is assembled together with the adjacent wall formwork (connected by special c-slot).
It has multiple forms and wide uses.
（3） Tools preparation tools include: hammer, self-made hook, wrench, vertical component mold opener and horizontal component mold opener (IV) labor force and site preparation.
Angle aluminum: it is mainly used for connection.
The foreman and workers must be fully familiar with and understand the detailed drawings of aluminum mold structure.
Pin layout principle: pins shall be set at the four corners, aluminum corners and both ends of c-groove of plate formwork, and the spacing between pins in the middle shall not be greater than 300mm.
Aluminum formwork and inverted sill are used for the construction of kitchen and bathroom hanging formwork structure with a settlement of 20mm.
（1） Survey and setting out survey and setting out lead the elevation to the outer frame of the floor working surface, and control the elevation of the root of the wall column and the elevation of the beam and slab bottom through the measured elevation.
The diagonal bracing legs shall be fixed with expansion bolts, and the embedded water and electricity pipelines in the plate must be avoided.
（3） Wall column reinforcement binding and water and electricity embedded wall column reinforcement installation and water and electricity embedded shall be welded and bound according to the design drawings and specifications; After the wall column reinforcement is bound, the electrician shall timely embed and fix the embedded pipeline and box in the wall column in place; Wall column reinforcement and water and electricity concealment shall be carried out in the way of divisional acceptance, and the supervisor shall be notified in time for concealment acceptance before formwork sealing of each wall..
2、 Aluminum formwork assembly process (I) wall column formwork assembly process wall column aluminum formwork assembly process: 1.
Technical preparation mainly includes: 1.
The size of the main components and parts of the aluminum mold is generally finalized, which is convenient for turnover.
It is generally divided into short nail, middle nail and long nail; Pin piece: plays the role of locking the pin.
Organize| Diced bean construction I.
（4） Assembly process of plate formwork assembly process of floor aluminum formwork: 1.
3、 Key points of construction process control: the wall column positioning bar must be welded in place to avoid the deviation of the root during the correction of the formwork; Special release agent must be applied before aluminum mold assembly; The formwork shall be assembled in strict accordance with the drawings and numbers; Correction and inspection of perpendicularity and flatness of wall column formwork and levelness of beam slab formwork.
The hole spacing of angle aluminum pin is 50mm.
Pin connection is adopted between plate die and angle aluminum; 4.
Special personnel shall be assigned to weld the positioning reinforcement, which shall be accurately positioned without damaging the main reinforcement.
4.
The lower bay window plate adopts the fully closed assembly process, and a removable vibrating opening is reserved at the upper part.
（5） Stair aluminum mold assembly process stair aluminum mold assembly process: 1.
Before the installation of wall formwork, the foreman shall check the positioning reinforcement and seal the formwork only after it is qualified.
The first track is 250 above the ground, and the spacing of each track is ≯ 700; 4.
The back ridge is set according to the inner 4 and outer 5.
（2） Assembly process of lower floating plate formwork assembly process of lower floating window plate aluminum formwork: 1.
The stacking place is the basement roof or commercial roof.
Support rods are set under the beam support, and the spacing of support rods is ≤ 1200mm; 2.
Pay attention not to exceed the allowable load of the structure.
Design and construction formwork allocation drawing of aluminum formwork factory; 3.
The plate formwork is connected with the shear wall formwork and beam formwork through C slot.
Axis (axis borrowing line) and wall column sideline must be snapped on the floor slab, and 300mm control line shall be snapped on the wall column; The wall column control line is used to check whether the formwork is offset, as well as the verticality, flatness and squareness of the formwork; After the wall column is bound, the elevation shall also be measured on the wall column reinforcement to control the elevation of water and electricity embedded pipelines and boxes.
（3） Beam formwork assembly process beam aluminum formwork assembly process: 1.
Stair aluminum mold is composed of stair bottom mold, step cover plate, step side plate and back edge; 2.
（2） Material preparation panel system: including wall body plate, floor plate (including keel), beam bottom plate and beam side plate.
The lower floating window plate aluminum formwork is composed of plate formwork, angle aluminum and back ridge; 2.
Transfer system: C slot: it mainly plays the role of bearing and transmission.
Deformed steel bar, the positioning bar is fixed on the shear wall reinforcement by welding, 60mm ~ 70mm away from the root of the shear wall (higher than the angle aluminum); Locating bars shall be set at the end and middle of the shear wall, and the spacing of locating bars in the middle shall not exceed 1000mm.
The I-shaped positioning bar needs to be cut to ensure the flatness of both ends, and the maximum negative deviation of 2mm is allowed for the blanking length.
2.
（6） Aluminum formwork assembly process of hanging formwork aluminum formwork assembly process of hanging formwork: 1.
The setting of elevation control points shall meet the control of on-site wall column and beam slab elevation.
Fastening system: Purlin (back ridge) member: it mainly plays the role of reinforcement, similar to the steel pipe reinforced by wood formwork; Screw: it has the function of pulling and binding, and is commonly used for wall fixation.
The step formwork, side plate and shear wall formwork are connected by pins.
The keel, plate support and plate formwork are fixedly connected by pins; 3.
Pin layout principle: pins shall be set at both ends of the formwork (angle aluminum and c-groove), and the spacing between pins in the middle shall not be greater than 300mm; 4.
It is widely used.
The pin hole spacing of wall formwork is 300mm, and both ends are properly densified; The pin hole spacing of floor slab and beam slab is generally 100mm.
It is generally covered with PVC pipe; Pin: it plays a fixing role and is similar to nail.
The bottom formwork, angle aluminum and side formwork are fixedly connected by pins; 3.
The beam formwork is composed of shaped beam bottom formwork, angle aluminum, shaped beam side formwork and beam support.
It is used for the connection of beam bottom external angle, side plate and bottom plate and shear wall external angle for the connection of wallboard.
C slot: mainly used for bearing and transmission.
When pouring concrete, the formwork at the vibrating opening shall not be installed first.
A vibrating opening shall be reserved for the step cover plate; 3.
L-shaped positioning bar is adopted at the end of the shear wall, and I-shaped positioning bar is adopted at the middle.
The beam support can only be removed after the structure reaches the corresponding strength; (during construction, the support is equipped with three floors, and the wall and beam slab are equipped with one floor) floor slab (floating platform) support: transfer the floor slab (floating platform) load together with the support pole, and connect it with the keel (floor slab) with pin pieces.
The wall column aluminum formwork is composed of shaped wall panel formwork (60 * 40 angle aluminum is set at the bottom of inner wall formwork and outer wall inner formwork, and K plate is set at the top of outer wall formwork), back ridge, split screw and diagonal brace; 2.
Aluminum formwork shall be fixed with angle steel.
The horizontal spacing of split screw shall be determined according to the design of aluminum die.
The bottom corner aluminum and wallboard formwork are connected by bolts, and the wallboard formwork and wallboard formwork are connected by pins with a spacing of 300mm; 3.
The hole spacing of c-groove pin is generally 100mm.
Support system: beam support: transfer the load together with the support vertical rod, and connect it with the beam bottom plate with a pin.
