Prefabricated Building Components in Xiangxi
Prefabricated building components in Xiangxi, represented by Hunan Dongfanghong Residential Industry Co., Ltd., cover non-removable steel bar truss floor decking, standardized design collections, and prefabricated building application systems, featuring high efficiency, safety, and environmental protection.
Leading Enterprise and Business Scope
Hunan Dongfanghong Residential Industry Co., Ltd. is a leading enterprise in the field of prefabricated components in Xiangxi. With a scale of 1,000 - 4,999 employees and having been established for 10 years, its business covers prefabricated components, engineering materials, stairs, light steel, and steel structures. Its products have received honors such as technology-based small and medium-sized enterprises and provincial-level specialized, refined, and new small and medium-sized enterprises, indicating high technical strength and market recognition.
Non-removable Steel Bar Truss Floor Decking: Technological Innovation and Core Value
This component integrates steel bar trusses with the base plate in a prefabricated manner. After concrete pouring, the base plate becomes a permanent part of the floor slab, eliminating the need for formwork removal. Improved Construction Efficiency: The traditional process requires five steps (formwork erection, steel bar binding, pouring, curing, and formwork removal), while the non-removable process only requires two steps: laying the panels and pouring concrete. Workers can directly pour concrete after hoisting the panels according to the drawings. The base plate has its own bearing capacity, eliminating the need for additional supports and significantly shortening the construction period. Optimized Safety Performance: The steel bar truss serves as the load-bearing framework, providing stable support during transportation and installation, avoiding the risk of deformation or collapse of traditional floor slabs due to unstable supports. Environmental Adaptability: The base plate is made of galvanized steel plates or high-performance fiberboards, which are moisture-proof and corrosion-resistant, suitable for the construction environment in Xiangxi, which is mountainous, rainy, and has narrow sites. Design Flexibility: The height and spacing of the trusses can be customized to meet the needs of large-span structures (such as the cantilevered floor slabs in hotel lobbies), multi-story or irregular structures (such as the curved balconies in residential buildings and the load-bearing floors in industrial plants), and facilitate the handling of height differences and complex elevations.
Standardized Design Collections: Specifications and Guidance
Two provincial-level standard collections have been implemented in Xiangxi:
- 《Xiang 2021G301》: It standardizes the design of prefabricated ribbed base plate concrete composite floor slabs, covering three types: concrete ribs, steel bar ribs, and steel pipe ribs. It has been in effect since April 1, 2021.
- 《Xiang 2021G106》: It includes BIM intelligent construction standards for the entire industrial chain, such as truss steel bar concrete composite slabs (with a 60mm thick base plate), prefabricated stairs, beams and columns, balcony slabs, air conditioning slabs, and internal and external wall panels of shear walls, promoting standardized production of prefabricated buildings.
Application Case: Prefabricated Building Practice
The first phase of the Xiangxi Hongfenggu Health and Wellness Center adopts an assembled monolithic structure, mainly using prefabricated components combined with cast-in-place processes. Component Types: Horizontal components use composite beams + composite floor slabs, vertical components use prefabricated shear walls and columns, the external enclosure uses prefabricated exterior wall cladding, the internal partition walls use concrete sandwich panels, and the standard floors have fully prefabricated stairs. The assembly scope covers balconies, bay windows, and air conditioning slabs. Assembly Rate: The health and wellness hospital and rehabilitation main building have an assembly rate of about 50%, the rehabilitation auxiliary building and ethnic medicine research center have an assembly rate of about 60%, and the health and wellness apartments have an assembly rate of about 65%, demonstrating the key role of prefabricated components in improving the level of building industrialization.
