Development of steel structure and application of steel pipe

Steel structure has a bright future

The domestic steel structure industry is analyzed from 5 aspects. Energy construction will be accelerated, and the amount of steel used in main building and boiler frame of thermal power plants will increase. Secondly, there will be an increase in Bridges in traffic engineering. In addition to steel beams for cross-river, cross-sea and railway Bridges, steel structure has become a development trend for highway Bridges in recent years. Highway guardrail, toll station, traffic signs of steel structure consumption also increased significantly. Thirdly, the use of steel structure in municipal construction will increase, for example, subway and light rail projects, urban overpasses, viaducts, environmental protection projects, urban public facilities and temporary housing are increasingly using steel structure. Fourth, steel structure housing will increase. The state advocates building houses that save energy and land, and the design specifications, supporting technologies and materials for steel structure houses are basically available. At present, our country only has 15 million square meters of steel structure housing, but the developed country reaches 40% ~ 50% of the total building. Fifth, because the steel price in China is lower than that in the world, the labor cost is also relatively low, and the production level and construction quality of China's steel structure are excellent, therefore, in the international engineering market, Chinese steel structure enterprises have strong competitiveness.

Steel pipe application one two three

The excellent structural performance of the circular tube shape under compression, torsion and multi-direction bending has been fully fulfilled. The reed in the wind, the bamboo in the rain, and the thigh bone that supports the weight of the human body are all round tubes. Perhaps people get inspiration from this, the excellent structural performance of the round pipe and a very attractive architectural shape combined to form the steel pipe structure. In recent years, the applications of circular tube structure include building, bridge, dam, offshore platform structure and tower mast.
Steel pipe construction is very useful

To promote the steel pipe structure, Chen Luru hopes to do the following work: one is to organize the preparation of the design and construction of cold-formed square square steel pipe members of the technical specifications or design manuals, to guide the application. The second is to strengthen the technical cooperation and exchanges between manufacturers, designers, steel structure manufacturers and colleges and universities, to carry out the research and development of standardized and universal rectangular pipe components and housing system, and promote the development of application technology. The third is to improve the square tube product standard, and JG/ T178-2005 upgrade to the national standard. The fourth is to improve the product performance of square rectangular tube, expand product varieties, and develop the best steel type of cold formed square rectangular tube (equivalent to Japan's SN series steel and double weld thick wall steel pipe). The fifth is to expand the rectangular steel pipe, including cold and hot forming steel pipe members (including concrete filled steel pipe members of the design and calculation theory, node structure optimization, material performance improvement (plasticity, welding performance, etc.) and optimization of construction technology and other aspects of the application research.