In China lightweight steel structure buildings have been undergo fast development and widely used in industrial buildings. Lightweight steel structure is a new trend for residential buildings. Presently, although the cost is higher than conventional concrete buildings, they are advantageous in their fast construction speed, energy saving and carbon emission reduction. The advantages of lightweight steel structure buildings have been extensively noticed and, they have not only already become the first choice in constructing industrial buildings, but also been extensively used in residential buildings.
The structure design, configuration and assembly method of the lightweight steel for buildings have great affects on the quality and construction work. Usually, the main supporting components of the frame/post structure system, such as the structural beams and the structural columns/studs, are made of cold bending or cold rolling light gauge steel having the thickness of 1.5 mm to 5 mm. The cross section of cold bending steel has a uniform thickness and arc-shaped corner. In the bearing wall structure system the cold-formed light gauge steel also comprises various shapes having thickness under 1.5 mm. In addition, structure components are combined with small size of steel angle, steel tube, steel channel, steel plate and steel cylinder, and cold-formed light gauge steel, are also often used as purlin connectors, truss diagonal bracings, etc.
However, there are still a lot to be improved in the building design, structure design, and erection methods of lightweight steel buildings. Presently, when a lightweight steel frame is erected and assembled on site, the supporting components such as the structural beams, the structural columns/studs, and the purlins, etc., made of cold-formed light gauge steel, steel angle, steel channel or steel plates, are usually connected, positioned and fastened by end-to-end joint (such as rigid or hinge). The connecting work is very complicated and serious accumulated errors are brought out due to the large quantity of joint. Therefore, in practical applications, the existing frames for buildings still have lot of defects.
In view of the above defects existing in the current lightweight steel structure building, the present inventor creates a novel lightweight steel structure with double continuous beam system by using his rich practical experiences and professional knowledge, combing the application of theory and actively performing the research and innovation, and improves the current lightweight steel structure building thereby bringing more practicality. After iterations of research, experimentation and improvement, the present invention of great practical value is finally created.