Prefabricated Houses in Sanming, Fujian
The situation regarding prefabricated houses in Sanming, Fujian, mainly involves two aspects: issues with old prefabricated houses and the development of prefabricated building enterprises.
Prominent Issues with Old Prefabricated Houses
Sanming has a large number of old houses built in the 1980s and 1990s, including brick-concrete structures and prefabricated slab buildings. These houses were designed with relatively low initial standards. Over time and with changes in later usage requirements, they face numerous problems. For instance, the increase in later loads has led to a significant degradation in the structural performance of the houses. Taking a four-story brick-concrete residential building constructed in 1995 in Yong'an, Sanming, as an example, tests revealed that the measured strength of the mortar in the load-bearing walls on the third floor was only 52% of the designed value. This seriously affects the load-bearing capacity and stability of the walls, making the house more prone to damage or even collapse when subjected to external forces such as earthquakes and strong winds. The end support length of the prefabricated hollow slabs on the second floor is less than 50mm, which causes the ends of the slabs to be unable to effectively transfer loads when under stress, leading to local damage and subsequently affecting the structural safety of the entire floor slab. These issues with old prefabricated houses not only threaten the lives and property of residents but also pose certain challenges to urban renewal and renovation.
Development Assistance from Prefabricated Building Enterprises
Fujian Jianxiang Construction Technology Co., Ltd., located at No. 16 Xingye 5th Road, Xiaojiao Industrial Park, Sanyuan District, Sanming City, Fujian Province, is a state-controlled enterprise. The company is mainly engaged in the research and development, production, sales, and installation of new environmentally friendly building materials such as prefabricated components for prefabricated buildings. It has invested in the construction of a prefabricated building production base in Sanming City, Fujian Province, which is of great significance for the development of prefabricated houses in the Sanming area. Prefabricated buildings are produced in factories with prefabricated components and then assembled on-site, offering advantages such as fast construction speed, controllable quality, and environmental protection and energy conservation. The existence and development of this enterprise help promote the transformation of prefabricated houses in the Sanming area from traditional old models to modern prefabricated building models, improving the construction quality and efficiency of houses and meeting the market demand for high-quality housing.
