basic module Prefabricated steel structure module
The development of the prefabricated construction industry is an inevitable trend in the future development of the global construction industry. The birth of prefabricated buildings completely subverts the traditional architectural model. Compared with traditional architectural forms, prefabricated buildings have many advantages such as high degree of intensification, low building energy consumption, high building quality, low carbon energy conservation and environmental protection, short construction cycle, and less labor dependence. In the context of the national environment of "labor shortage, stricter environmental protection, and overcapacity of steel production capacity", the application and development of steel structure prefabricated buildings is an inevitable trend, and will play a crucial role in promoting the transformation and upgrading of the construction industry, promoting modern urban and rural construction, and low-carbon and high-quality development.
Therefore, the National Building Materials Exhibition and Trade Center and its subsidiary China Materials (Beijing) Institute of Building Sciences independently developed a steel structure inlaid green energy-saving building system (BTS system for short). This system is a prefabricated building technology system that closely combines steel structures and inlaid combined walls, and dismantles the house into six basic modules, namely:
module 1: basic module
module 2: prefabricated steel structure module
module 3: wall panel module
module 4: exterior wall insulation and decoration module
module 5: floor module
module 6: roof module
After continuous optimization of multiple projects, the BTS system can currently provide a complete set of solutions for Party A and consumers, with a comprehensive cost of price advantages and excellent performance. This article will explain to you the first two modules of the six major modules of the BTS system: foundation module, prefabricated steel structure module
module 1: foundation module
BTS system houses have good foundation backward compatibility. When the mechanical design meets the standards, free switching between traditional concrete systems and spiral pile systems can be achieved in the foundation module according to the actual project situation. In terms of the node design of the foundation, the foundation module has an integrated prefabricated steel cage technology that improves the construction accuracy of traditional concrete foundations, which can effectively reduce the difficulty of installation of the upper structure; there are also prefabricated steel structure docking parts that perfectly fit spiral land piles, which have stronger adaptability and adaptability to spiral land piles, and can greatly utilize the many advantages of spiral land piles.
spiral ground pile example
spiral ground pile schematic
spiral ground pile is a pipe pile that is welded and wound with spiral blades after hot forging. The basic working principle is equivalent to wooden screws. It is screwed into the ground by a special spiral ground pile tightening equipment to replace the traditional concrete foundation.
spiral ground piles have many advantages in the construction process. For example, the foundation construction does not require damage to the surrounding environment, no need to dig land and pour cement, and the spiral ground piles can be directly driven into the ground. Therefore, there is no mud pollution during the construction process, the waste soil is transported out and dust is transported, and the project cost is greatly reduced. The foundation can be constructed as usual in severe weather such as snow and freezing, and it is extremely affected by the environment. The foundation is accurately positioned using GPS or total station. The forward and reverse rotation of the construction is simple, controllable and adjustable, and the positioning accuracy is high. After use, the spiral ground piles can be pulled out by just rotating in reverse. It is 100% energy-saving and environmentally friendly, and can be recycled. It can be moved as you wish, reducing the impact on the environment, and the remaining pollutants are removed to zero. After taking it out, the green space environment will not be damaged, which is in line with the new concept of energy-saving, low consumption and environmental protection. As a new solution for foundation construction, spiral ground piles do not require excavation and pouring, have zero damage to the environment, are convenient to artificially and conveniently constructed, economically and environmentally friendly, and are in line with the design concept of prefabricated buildings. It can be perfectly integrated into the BTS structural system through original steel structure prefabricated docking parts.
spiral ground pile usage renderings
Module 2: Prefabricated steel structure module
prefabricated steel structure module adopts the steel structure inlaid green energy-saving building system (BTS prefabricated system for short) independently developed by the National Building Materials Exhibition and Trade Center. This system is a prefabricated building technology system that closely combines steel structures and inlaid combined walls. After years of technical research and development and continuous optimization of multiple projects, the BTS system has now formed a complete set of green prefabricated building system solutions with comprehensive cost and excellent performance. It can be used for multiple purposes such as single-family villas and high-end real estate, townhouses, cultural and tourism homestays, small office buildings, etc.
The steel structure part in the BTS system adopts a rectangular tube frame system, and the connecting nodes adopt independent research and development of full bolt rigid node connections. At present, the node connection form has been completed and applied for multiple countries' patents. The steel structure node construction is fast and fully bolted, and rigid connection strength can be achieved without on-site welding. The self-developed full bolt node has completed multiple rounds of experiments in the Engineering Structure and New Materials Laboratory of Beijing University of Architecture, and the experimental results far exceed the conventional standard values in the specifications. At the same time, the rectangular tube frame structure system has actual engineering cases and has repeatedly proved its structural strength.
Full bolt rigid node installation diagram
Full bolt rigid node
BTS system has many advantages such as excellent seismic performance, light structure weight, high construction accuracy, long service life, and fast construction speed:
(1) The rectangular pipe frame system has good flexibility and strong seismic resistance. It can absorb and consume a large amount of seismic force through certain allowable deformation, thereby reducing the damage to the building by seismic force;
(2) Compared with traditional concrete structures, the rectangular pipe components have a small cross-section and are equivalent to the amount of steel bars used for the same concrete frame, which saves the concrete weight of the frame beams and columns. The steel structure is 1/2~1/3 of the weight of the reinforced concrete, which greatly reduces the load on the foundation and reduces the amount of concrete;
(3) A large number of standardized steel components are mechanized and are all completed in the factory, so the construction accuracy of the components is high and the quality is good compared with the concrete structure poured on site;
(4) All steel structural components are fully galvanized and corrosion-resistant, with a galvanized content of more than 200g/m2, and the structure service life can reach more than a hundred years;
(5) Since steel components are assembled, the components are highly accurate, and there is no need for welding on site construction, the prefabricated steel structure module is fast and the construction period is short, and the process is relatively controllable.
Project Example
Prefabricated steel structure modules have the above advantages, but also have strong competitiveness in engineering cost. Under the structural optimization of the BTS prefabricated system, the steel used in the second floor is about 35kg/m2, which is about 45kg/m2 compared to the traditional steel structure. It greatly saves the construction cost. At the same time, due to the light self-weight of the structure, the foundation is not high, and the foundation can meet the bearing capacity requirements of the foundation without treatment or proper treatment, thereby saving the foundation treatment cost and the cost of foundation cost. In addition, foundation construction, floor slab construction and steel component processing can be carried out in parallel operations, thereby greatly shortening the construction period on site. Compared with the construction period of traditional concrete structures, the construction period can be shortened by about 1/4 to 1/3, thereby greatly reducing the construction cost.
About Us
National Building Materials Exhibition and Trade Center was established in 1956. It is a public institution directly under the State-owned Assets Supervision and Administration Commission of the State Council. It is the specific implementation unit of the China Building Materials Industry International Exchange and Cooperation Platform and the "China Building Materials International Capacity Cooperation Enterprise Alliance" approved by the National Development and Reform Commission.
center is rooted in the building materials industry, undertakes the construction and operation of the international capacity cooperation platform and circulation industry chain of my country's building materials industry. It is committed to promoting and driving the all-round output of standards, design, technology, production capacity, construction, equipment and investment in China's building materials industry, and has a high influence in the industry.
Center currently has main business segments: industrial investment and development, prefabricated building system research and development and application, building materials inspection and testing certification services, international production capacity cooperation, commodity trade, industry technology services, building management, etc.
China National Materials (Beijing) Building Science Research Institute currently has main businesses: research and development and application of prefabricated building systems, prefabricated houses and bulk import and export trade; international certification and testing; international green label carbon footprint, EPD report, full life cycle assessment; international capacity cooperation fund and overseas investment, construction of landed warehouse parks, etc.
As the specific executive unit of the China Building Materials International Capacity Cooperation Enterprise Alliance, the National Building Materials Exhibition and Trade Center focuses on following the pace of the "Belt and Road" initiative and leading China's Building Materials' advantageous production capacity to "go global".
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Tel: 13051241804
Email: [email protected]
Address: Building C, China Building Materials Building, No. 11, Sanlihe Road, Haidian District, Beijing
