How to open up the whole industrial chain of precast construction and complete housing construction projects with a prefabrication rate of
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Baoye Yonglian production base covers an area of 160 mu, with a total construction area of 50000 square meters.
In component production, modular design and PC parts library are formed, and BIM model of components is updated.
Yang Xin’s project can go one step ahead and pass BIM repeated verification in the design stage to determine the style, structure, joint connection and other key assembly construction processes of precast components.
When stacking horizontally, each stack shall be no more than six pieces and no more than 1.5m.
The intelligent factory of precast components realizes automatic production and flow operation, and reduces the labor cost.
When the wallboard is loaded and transported, the wallboard components are mainly transported vertically, and the balcony board and stair board are mainly transported horizontally.
The start of the transportation vehicle should be slow and the speed should be uniform.
Precast components shall be stacked in layers and types.
Reduce the types of components, reduce the number of molds, and improve the standardization of component production.
The prefabrication rate is more than 40%, and the unique precast design system.
Note that the spacing between gaskets shall not be more than 1.5m, and there shall be no less than two gaskets on each wall..
The second step is to measure and set out the position of the end line, side line, truss line and cushion block of the outer wall panel according to the axis; Then measure the height of the cushion block with a level gauge, set out the construction – check whether the length of the reserved reinforcement position meets the requirements – place the gasket (gasket function: calculate and adjust the thickness of the gasket according to the floor elevation to ensure the top elevation and flatness of the wall after wall hoisting, and reserve a 2cm cavity for grouting after the gasket cushions the shear wall to ensure smooth grouting in the warehouse).
Click the Shanghai construction site above to pay attention to our key project in Baoshan District, which undertakes the task of relocating 1912 relocated residents.
Optimize reinforcement arrangement through BIM Technology collision inspection.
▲ the whole production process of intelligent factory system for precast components ▲ strictly control the construction quality of PC.
We have a perfect upstream and downstream industrial chain of precast buildings, so that all construction links of the project can be connected smoothly.
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The key points of stacking control of precast components shall be stacked according to the hoisting sequence, specification, variety, building number and other zoning.
Nowadays, most of the general contractors of precast houses only begin to intervene in the construction stage, and there is a problem of disconnection between design and construction, which affects the progress.
Component transportation adopts information-based logistics distribution.
Two 100x100mm full-length wooden squares shall be padded at the bottom, and the support cushion shall be located below the position of the wall panel flat hanging embedded parts, so as to align up and down.
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Shanghai Baoye currently has five such EPC precast projects in Shanghai.” At present, buildings 13-16 have been constructed to the 8th floor, and other buildings have been constructed to the transfer floor of PC assembly structure.
When turning and changing lanes, slow down to prevent the wallboard from overturning.
Self owned component factory customized component production “in order to ensure that the quality of precast housing is as good as that of cast-in-situ, we have our own component production factory, which can customize industrial production of PC parts,” Ye Hua said.
The 16 residential buildings in the project are precast structures, with a prefabrication rate of more than 40%, and the construction speed is up to 5.5 days and a standard floor.
Auxiliary reinforcement positioning process holes 2mm larger than the diameter of reinforcement according to the position of precast reinforcement of wallboard to ensure the accurate position of positioning reinforcement; In order to facilitate pouring and vibration during concrete pouring, the positioning control formwork shall be 10 ~ 15cm higher than the top surface of the floor slab.
The construction of relocation and resettlement housing project in Yangxin community of Shanghai Yangxing has attracted much attention! Shanghai Yangxing Yangxin community relocation and resettlement housing project (hereinafter referred to as Yangxin project) has a total construction area of nearly 220000 m2 and 16 precast houses.
(it is forbidden to place the outer wall panel horizontally) the outer wall panel and the inner wall panel can be inserted vertically or against each other.
When inserting, they shall be inserted through a specially designed insertion frame, which shall have sufficient stiffness and need to be firmly supported to prevent dumping or sinking; The wallboard should be raised and stored off the ground to ensure that the quality of root surface decoration, high and low mouth structure, soft joint strip and wall corner are not damaged; Strengthen the protection of vulnerable parts such as connecting waterstop, high and low openings and wall corners.
After the mobilization of PC, the owner, the supervisor and the general contractor shall accept the flatness, perpendicularity, section size, specification, quantity, position and appearance quality of embedded parts.
Ye Hua, chief engineer of Shanghai Baoye construction engineering company, said: “this project is completed by Shanghai Baoye from design to component production and precast construction.
The weight shall be fully transferred to the site, the excessive settlement shall be controlled, and the distortion or deformation of precast components shall be avoided.
Lifting process and control points of wallboard components the first step is reinforcement positioning ▲ before the concrete pouring of the embedded transfer layer of the top plate reinforcement, the wooden square shall be used to assist the reinforcement positioning, and the position of the positioning reinforcement shall be checked before the wallboard lifting to ensure that the wallboard is lifted in place accurately.
Generally, there shall be no more than 5 pieces of stairs and no more than 6 pieces of laminated floors and balconies.
For the first time, the single row reinforcement sleeve grouting connection design is used in the project, and one reinforcement is arranged within every 100mm, making the construction, production and installation more convenient.
the transportation control points of precast components need to be transported by special vehicles.
A channel with a width of 0.8 ~ 1.2m should be set between the stacking of different components, and good drainage measures should be taken; The temporary storage area shall be provided with isolation belt or made into a closed storage area between the temporary storage area and the operation area of other types of work, so as to avoid affecting the normal work of other types of work during the lifting and transfer of wallboard and prevent safety accidents.
It is equipped with automatic PC production line, with a total design annual production capacity of 100000 cubic meters.
Except for the local cast-in-situ structure of stairs and elevator lobby, the laminated floor slab, precast internal and external shear walls, stairs and balcony plates are PC assembled integral structures.