Notice! About the social problems of prefabricated steel structure houses!

1) The standards and specifications for prefabricated steel structure houses are not perfect. The prefabricated steel structure residential system is a comprehensive and complex technical system, which involves a series of supporting systems such as the main structure, wall materials, roofing materials, kitchen and bathroom systems, and pipeline systems. At present, the technical regulations related to steel structure houses mainly include two aspects: structure and residential design, and there are no specific regulations on the envelope system of prefabricated steel structure houses. Therefore, under the conditions of unclear specifications and inconsistent standards for steel structure housing, the market for steel structure housing will not be fully developed, and it will have an adverse impact on the development of prefabricated housing industrialization. (2) The cost management mode and acceptance procedures of prefabricated steel structure houses are not perfect. Due to the lack of list pricing items for prefabricated steel structure residences in the current bill of quantities pricing specification, the current engineering pricing model is not suitable for the needs of prefabricated steel structure residences. In addition, the current engineering acceptance specifications are also incompatible with the production method of prefabricated steel structure residences. At the same time, the current construction industry based on the site-level acceptance method and the prefabricated building mainly through the production factory and on-site assembly construction methods are not compatible. fit. (3) Multi-party coordination in the construction process is inefficient. According to the current construction contracting mode, the construction unit invites a general contractor for construction. In the construction process, there are many problems such as overlapping of procedures of multiple subjects, difficulty in management and coordination, delay in construction period, non-guaranteed quality, and prevarication, etc., which reduces the efficiency of production. (4) The degree of assembly is low. There are still many on-site pouring, so the construction period is prolonged, the labor cost is increased, and the impact on the construction environment is aggravated. The high cost of processing and manufacturing parts has caused many investors to reject prefabricated steel structures. (5) Insufficient publicity and promotion, insufficient awareness, and backward concepts. Prefabricated steel structure housing is a form of housing encouraged by the state, but due to the high initial construction cost, insufficient publicity and promotion, and insufficient understanding of steel structure housing by developers and consumers, the development of prefabricated steel structure housing is relatively low. slow. Economic problems of prefabricated steel structure houses (1) The price of steel is expensive. Prefabricated steel structure houses use steel structures for residential construction with high prices, and the demand for steel is large. At the same time, the recent steel price market has fluctuated greatly and increased significantly. The corresponding cost is also higher than the traditional concrete structure. Therefore, at present, steel structure buildings are more used in large buildings and tall buildings, but less in civil residences. (2) The comprehensive benefit is not obvious. Due to the late start of industrialization in my country and the weak foundation of the housing industry, industrial production is currently mainly carried out on the main structure of the building, while basic engineering, decoration engineering, equipment installation engineering, etc. are still mainly manual operations. Due to the advantages of steel structure engineering in construction period and other aspects, the industrialization efficiency cannot be fully exerted. (3) In the material procurement process, the degree of standardization is low and the cost is high. At this stage, although the components have been standardized and merged as much as possible in the design stage, there is still no standard to guide component manufacturers to carry out batch standardized production and storage, or some standards are not strong enough to guide and bind. In the process of specific project implementation, it is still necessary to Made to order.