Prefabricated Houses in Rural Shanxi

Prefabricated houses in rural Shanxi are a form of architecture that existed in the past and still exists today, characterized by convenient construction and low cost, but they also have safety hazards. Nowadays, there is also more advanced prefabricated integrated housing technology.

I. Definition and Characteristics of Prefabricated Houses Prefabricated slabs were commonly used floor slabs in early construction. When making them, a hollow mold was nailed with wooden planks, steel bars were arranged, and then cement was poured. After drying, the wooden planks were knocked off to obtain the slabs. Most prefabricated slabs are hollow and have the advantages of light weight, low cost, and convenient and fast construction. They were quite popular for building one-story houses in rural Shanxi over the past two to three decades, and many rural families chose brick-concrete structures and used prefabricated slabs.

II. Application of Prefabricated Houses in Rural Shanxi They were widely used in the past, and today some cement prefabricated house manufacturers are still producing related products, such as Shanxi Detong Prefabricated Components Co., Ltd. Their products are suitable for industrial and civil construction projects, municipal engineering, rural construction, and infrastructure projects, etc.

III. Safety Hazards of Prefabricated Houses

• Material and Process Issues: Prefabricated slabs are assembled structures, and the production processes vary greatly. To reduce costs, some manufacturers use single-layer steel bars or iron wires instead of internal steel bar frameworks, resulting in poor-quality prefabricated slabs. For example, in the collapse incident of a restaurant in Linfen, Shanxi, the steel bars in the prefabricated slabs were thin and rusty.
• Risks of Additional Construction and Expansion: Some farmers, in order to improve their housing conditions, directly build additional structures on existing buildings, making the original houses unable to bear the load and posing serious safety hazards. For example, the restaurant in Linfen, Shanxi, was expanded multiple times, and eventually, the prefabricated slabs on the second floor collapsed instantly.

IV. Investigation and Rectification of Rural Self-built Houses Used as Business Premises in Shanxi The Safety Production Committee Office of the People's Government of Shanxi Province issued relevant guidelines, requiring a comprehensive investigation of all rural self-built houses used as business premises. For those involving illegal land use, construction, and operation, unauthorized changes in building structures and uses, and major safety hazards, files should be established one by one, classified for disposal, and dealt with in accordance with laws and regulations.

V. Prefabricated Integrated Housing Construction Technology in Shanxi Shanxi is located on the Loess Plateau with complex geological conditions, a dry climate, and large temperature differences, which place high demands on the seismic resistance and durability of buildings. Thus, the prefabricated integrated housing technology has emerged. This technology improves the consistency of building quality, shortens the construction period, and reduces on-site wet operations through modular design, factory manufacturing, and prefabricated construction. It generally adopts steel structures or light steel-concrete composite structures, featuring high seismic performance and good thermal insulation capabilities.