Modular components have the characteristics of spatial structural units, good stress performance, and economical design. Because the top plate and wall panels of the modular components are cast as a whole, there is no problem of the length of the floor slab, and the walls can be made thinner. Although the inner wall is composed of two The wall is assembled, but it is only a hollow wall, and the materials are still relatively low. In the production of components, a modular component is a room, with few specifications and models; for the same room, the fabricated large slab requires internal wall panels, external wall panels, and building slabs to be assembled into several components to produce more specifications and models. In the construction and installation, the module is a three-dimensional component, which can stand firmly by loosening the hook. Generally, the connection only needs to be welded at the corner. However, there are many large plate components and many lifting times. After they are in place, they need to be temporarily fixed with supports, and then the cast-in-place joints , Many processes. The modular components are bulky, heavy, and require large-tonnage trailers, and cranes are used for pulling and hoisting; large-board components are small, light, and small trailers that can be transported and hoisted by cranes.
2. Modular house compared with frame building
The frame structure uses a considerable amount of reinforced concrete on beams, columns, and floor slabs. Its finished product is only a structural skeleton. A lot of building decoration work such as wall masonry and internal and external wall plastering are required; the amount of reinforced concrete for modular structure It is equivalent, but the "building" and "structure" are combined into one. The box wall is not only an enclosure structure, but also works with corner posts and beams, which is economical and reasonable.
3. The comparative advantages of modular houses and brick-concrete buildings
Construction features of modular components: When building a house with modular components, more than 2/3 of the construction process can be completed in the factory, leaving only module assembly, a small amount of decoration, connecting pipelines and other tasks to be operated on site, so about 80% of the The work is not affected by the climate and is suitable for large-scale industrial production. The total amount of labor is small and working conditions have improved. The construction period is about 1/2 shorter than other construction methods. The main material consumption is similar to or slightly lower than that of cast-in-place large formwork buildings. However, the module component prefabrication plant has a relatively large investment.