Prefabricated Panel Structure of Houses in Changzhou

The prefabricated panel structure of houses in Changzhou mainly includes the form of 'large-panel houses' and the application of various prefabricated components produced by professional prefabricated component manufacturers.

'Large-Panel House' Structure:
The 'large-panel house' is a common form of prefabricated panel structure housing in Changzhou during its early stages. It is constructed using prefabricated reinforced concrete large panels, which are assembled and welded together, belonging to the reinforced concrete structural system. This construction method, which became popular in the early 1980s, was a prevalent rapid construction model at the time. Its core feature is the factory-prefabrication of large-sized concrete panels (such as floor slabs and wall panels), which are then transported to the site for assembly, significantly shortening the construction period. However, due to the limitations of material technology and design standards at the time, 'large-panel houses' generally have issues such as a relatively short service life and a low seismic fortification level. Over time, some houses have developed safety hazards such as balcony cracks, exterior wall peeling, and exposed steel bars, necessitating reinforcement or renovation to enhance safety.

Production and Application of Professional Prefabricated Components:
Changzhou is home to several professional prefabricated component manufacturers whose products are widely used in the modern construction field. For example:

• Changzhou Weicheng Prefabricated Components Co., Ltd.: It mainly produces large roof panels, crane beams, saddle panels, double-T panels, and other prefabricated components. Its products cover the Yangtze River Delta region (Jiangsu, Anhui, Zhejiang, Shandong, Shanghai), meeting the needs for large-span, high-load-bearing components in industrial buildings and warehousing facilities.
• Changzhou Fangdan Prefabricated Components Co., Ltd.: It focuses on pre-stressed U-shaped roof panels, double-T panels, swallow-tail panels, crane beams, and bridge panels, among other large components. Its sales range extends to provinces such as Jiangsu, Anhui, Shandong, Henan, and Shanxi, serving infrastructure projects such as bridges and factories.

These prefabricated components adopt pre-stressing technology, which applies pressure in advance by tensioning steel bars, enhancing the crack resistance and stiffness of the components, and significantly improving structural durability and seismic performance. Compared with the early 'large-panel houses', modern prefabricated components have been optimized in terms of material strength, connection joint design, and construction techniques, making them more compliant with current building codes.

Summary: The prefabricated panel structure of houses in Changzhou has evolved from the early 'large-panel houses' to modern professional prefabricated components. The former requires attention to safety assessments and renovations, while the latter represents an efficient and durable construction solution widely used in industrial and civil fields.