Four advancement of prefabricated building construction technology

1 The main components are prefabricated

A large number of building parts and components from the workshop production prefabricated, using the flat construction method supplemented by advanced computer calculation instead of cast-in-place structure three-dimensional cross operation, can produce error control within a few millimeters of high-precision prefabricated components. Based on the strong compatibility of concrete materials, a wide variety of products can be produced using the precast industry.

2. The performance of prefabricated components is controllable

Most of the prefabricated components adopt the integrated manufacturing process that integrates waterproof, heat preservation and structure, which reduces the material loss and construction process. At the same time, because the casting, maintenance and storage of prefabricated components are carried out in the factory, it is not affected by the weather, which is conducive to winter construction, and harmful substances in the building materials are released during the production and storage of the factory, and the prefabricated building will not cause harm to the human body after completion.

3 Mechanical assembly

After the structure and building components of the prefabricated building are prefabricated, they will be transported to the construction site and then mechanized hoisting and assembly will be adopted. Concurrent engineering can be adopted in the construction period. While the design institute draws part or all of the component production drawings, the prefabricated component production plant carries out component manufacturing, storage, delivery and transportation, and the construction of pile engineering, foundation and underground engineering on the site can also be completed at the same time. The hoisting process and the production process of prefabricated component can be carried out simultaneously with the professional construction on the site. In addition, because the prefabricated building construction method no longer follows the traditional operating surface process and is converted to factory production, it has played a role in reducing the construction process of the operating surface and reducing the difficulty of construction, which has greatly improved the labor efficiency of engineering construction and greatly shortened the construction week of the project.

4 High precision requirements

High requirements are required for the measurement accuracy of pay-off and standard office and the position of reserved holes. Due to the factory production, the component size cannot be changed by prefabrication, and the small pay-off size will lead to the prefabrication component cannot be installed, and the large size will lead to too much joint. The elevation measurement also needs to be more accurate. If the elevation of the shear wall is not well controlled, the laminated plate cannot be installed smoothly, or the gap between the shear wall and the plate is too large and the mold needs to be re-supported. When the prefabricated concrete structure is reserved and buried, the position and size of the holes must be accurate, otherwise the re-opening of slots and holes will increase the difficulty of construction and even affect the safety of the structure.