Installation of Prefabricated Main Structure of Houses

There are various installation methods for the prefabricated main structure of houses, and the implementation methods vary depending on different scenarios and requirements. The following is a detailed introduction:

Construction of Prefabricated Rural Houses

• Jinshi Town, Xiangxiang, Hunan: It adopts an industrial production and modular assembly model. Taking the new house of Mr. Yan, a villager in Jin'an Village, as an example, the whole-chain technology of "base material research and development - component intelligent manufacturing - system integration" is used. The house is divided into 9 functional modules, and 90% of the concealed works are completed in the factory. On-site, the prefabricated wall panels are spliced into the house frame by cranes, and workers complete node grouting and detail processing. The project takes only 3 months from design to completion.
• Pujiang Town, Minhang, Shanghai: In the factory for prefabricated rural houses, the robot welding production line controls the precision of prefabricated components within 0.2 millimeters, and the on-site assembly error does not exceed 5 millimeters. Modular construction shortens the construction period to 30 days and also reduces construction waste by 80% and carbon emissions by 65%.
• Yuan'an, Hubei: It mostly adopts an assembled monolithic concrete frame structure. Prefabricated columns, composite beams, and other components are produced in a standardized manner in the factory, and the main structure can be capped within 15 days of on-site assembly. The post-pouring technology at the joints ensures the integrity of the building, and its seismic performance far exceeds that of traditional brick-concrete structures. It can also reduce labor costs by 30%.

Fully Assembled Residential Houses in Zhejiang

The prefabricated components adopt a plate structure and are connected by mechanical bolts, and sandwich insulation materials are used. The on-site installation is fast, and the main structure can be "assembled" in seven days. This installation method greatly shortens the construction period and improves construction efficiency.

Brick-Concrete Residential Buildings with Prefabricated Floor Slabs

The construction sequence at the main structure stage is as follows: setting out and erecting height poles → binding reinforcement for structural columns → masonry (erecting scaffolding, installing lintels, etc.) → binding reinforcement for ring beams → supporting formwork for structural columns and ring beams → installing floor slabs, balcony slabs, and stair components → supporting formwork for cast-in-place slabs and slab joints → binding reinforcement for cast-in-place slabs and slab joints → pouring concrete for structural columns, ring beams, cast-in-place slabs, and slab joints → curing → formwork removal. This construction sequence is relatively traditional, but the use of prefabricated floor slabs and other components also improves construction efficiency to a certain extent.