Development history and practical application of steel straight seam steel pipe
Release time:
2018-08-09 14:09
Source:
Steel tube structures were originally used for offshore or offshore structures, such as offshore platform structures. At that time, people knew little about the performance of welded steel pipe joints. It was not until 1947 that the world's first modern offshore platform was built in the Gulf of Mexico that people really realized the superiority of steel pipes as structural components, thus prompting people to begin to explore the performance of steel pipe structures. After that, in nearly half a century, many steel pipe structures with unique shapes, beautiful structures and excellent functions have emerged in countries all over the world. For example, the waiting hall of Stuttgart Airport in Germany adopts the tree-shaped supporting structure of cast steel joints of steel pipe members, which has the characteristics of unique shape and simplicity. The roof structure of Kansai Airport Terminal in Osaka, Japan adopts the curved truss triangle of round pipe section. Bushleen Palace in London, England, the exposed circular pipe section truss transfers the facade load to the column, and water is injected into the pipe section for fire prevention, which just makes up for the weak point of poor fire resistance of steel structure buildings. There are also the opening and closing roof of Toronto Skydome in Canada and the high-speed railway station of Charles de Gaulle Airport in France, which are all famous steel pipe structure buildings.
The development of steel straight seam steel pipe is later than that of Western Europe, North America, Japan and other countries, but in the last ten years, the steel pipe structure has also been developed rapidly in China. In particular, the completion of the Olympic venues represented by the Bird's Nest not only sets up a unique historic landmark for the 2008 Olympic Games, but also has groundbreaking significance in the history of world architectural development, providing historical testimony for the development of China and the world in the 21st century. The project used low-alloy high-strength steel Q460 for the first time, which greatly saved the amount of steel. In addition, my country has successively built some large-scale steel pipe structures, such as the National Grand Theater, Changchun Gymnasium, Shanghai Gymnasium, Hongkou Gymnasium, Guangzhou Gymnasium, Capital Airport New Terminal, Chengdu Shuangliu Airport New Terminal, Guangzhou New Baiyun Airport Terminal, Shenyang Taoxian Airport, Jinan Yaoqiang International Airport, etc, it will not deform or soften, and will not be corroded for a long time without any anti-corrosion operation outside. Changchun Gymnasium is the first time in China to use large-section square steel pipe with the largest span in China. The roof of Guangzhou New Baiyun International Terminal Building is a large-scale circular tube structure in China, and its finger corridor and elevated corridor adopt square tube structure. The completion of these steel pipe structures plays a very active role in the promotion and application of pipe structures in China.
Straight seam steel pipe steel structure as a new type of structure, in recent years in the world has been rapid development. In the last five years, the use of steel pipes in Europe has increased by 25%. Statistics from the North American Iron and Steel Research Institute confirm that as the U.S. steel industry targets the development of the bottom commercial building market, the demand for steel pipe structures is also on the rise, with a delivery volume of 2.25 million t in 1999, showing a trend of replacing open-air structural materials. According to the United States LTV Steel Company estimates that in the last 5 years, the consumption of structural pipes in the United States has increased at a rate of 5% to 10% per year. Japan is a multi-earthquake country, the construction industry uses more H-shaped steel structure, but in recent years it is also vigorously developing and applying straight seam steel pipe steel structure, and the specifications are large-scale and the section is complicated. Now it has produced a large steel pipe structure with a side length of 700mm and a wall thickness of 16~32mm for building structural columns.
In recent years, with the continuous growth of China's steel production, steel structure, with its own advantages, accounts for an increasing proportion of buildings, and steel pipe structures have also made great breakthroughs. The pipe truss structure in the steel pipe structure is favored by people for its unique advantages. The pipe truss has good overall performance, large torsional rigidity and beautiful appearance, and is relatively easy to manufacture, install, turn over, and lift; the steel pipe roof truss has the advantages of light structure, good rigidity, steel saving, and can give full play to the strength of materials, especially It is more economical to use in the pressure rod and support system controlled by the slenderness ratio. At present, the buildings using this structure are basically public buildings. There are more than 10 buildings using this structure in our country, and their span is 50~90m. The structure has the characteristics of beautiful appearance (flat plate shape, circular arch shape, arbitrary curve shape), convenient production and installation, good structural stability, high roof rigidity and good economic effect. Compared with the grid structure, the pipe truss structure can meet the requirements of various architectural forms, especially the construction of circular arch and arbitrary curve shape is more advantageous than the grid structure. From the stress characteristics of the grid structure, it can be seen that when its side-to-length ratio is greater than 1.5, its stress characteristics change from two-way to one-way force, so for most rectangular plane buildings, it is mainly a one-way force structure. The steel tube truss structure is similar to the plane steel truss, which belongs to the one-way force structure, but the upper chord of the truss increases the stability of the upper chord bar that controls the original plane truss, and its stability in all directions is the same, saving the amount of material. Steel tube truss structure is developed on the basis of the grid structure, compared with the grid structure has its unique superiority and practicality, the amount of steel used in the structure is also more economical. At present, this kind of structure is mainly used in some large public buildings, and it has great application potential in industrial plant column and roof truss, light steel structure and residential steel structure.
The development of steel straight seam steel pipe in China is later than that in Western Europe, North America, Japan and other countries, but in the last ten years, the steel pipe structure has also been developed rapidly in China. In particular, the completion of the Olympic venues represented by the Bird's Nest not only sets up a unique historic landmark for the 2008 Olympic Games, but also has groundbreaking significance in the history of world architectural development, providing historical testimony for the development of China and the world in the 21st century. The project used low-alloy high-strength steel Q460 for the first time, which greatly saved the amount of steel. In addition, my country has successively built some large-scale steel pipe structures, such as the National Grand Theater, Changchun Gymnasium, Shanghai Gymnasium, Hongkou Gymnasium, Guangzhou Gymnasium, Capital Airport New Terminal, Chengdu Shuangliu Airport New Terminal, Guangzhou New Baiyun Airport Terminal, Shenyang Taoxian Airport, Jinan Yaoqiang International Airport, etc, it will not deform or soften, and will not be corroded for a long time without any anti-corrosion operation outside. Changchun Gymnasium is the first time in China to use large-section square steel pipe with the largest span in China. The roof of Guangzhou New Baiyun International Terminal (Table 2) is a large-scale circular tube structure in China, and its finger corridor and elevated corridor adopt square tube structure. The completion of these steel pipe structures plays a very active role in the promotion and application of pipe structures in China.
As a new type of structure, steel pipe structure has been developed rapidly in the world in recent years. In the last five years, the use of steel pipes in Europe has increased by 25%. Statistics from the North American Iron and Steel Research Institute confirm that as the U.S. steel industry targets the development of the bottom commercial building market, the demand for steel pipe structures is also on the rise, with a delivery volume of 2.25 million t in 1999, showing a trend of replacing open-air structural materials. According to the United States LTV Steel Company estimates that in the last 5 years, the consumption of structural pipes in the United States has increased at a rate of 5% to 10% per year. Japan is a multi-earthquake country, the construction industry using H-shaped steel structure is more, but in recent years, it is also vigorously developing and applying steel pipe structure, and large-scale specifications, complex cross-section, has been the production of side length of 700mm, wall thickness of 16~32mm of large steel pipe structure, used for building structural columns.
In recent years, with the continuous growth of China's steel production, steel structure, with its own advantages, accounts for an increasing proportion of buildings, and steel pipe structures have also made great breakthroughs. The pipe truss structure in the steel pipe structure is favored by people for its unique advantages. The pipe truss has good overall performance, large torsional rigidity and beautiful appearance, and is relatively easy to manufacture, install, turn over, and lift; the steel pipe roof truss has the advantages of light structure, good rigidity, steel saving, and can give full play to the strength of materials, especially It is more economical to use in the pressure rod and support system controlled by the slenderness ratio. At present, the buildings using this structure are basically public buildings. There are more than 10 buildings using this structure in our country, and their span is 50~90m. The structure has the characteristics of beautiful appearance (flat plate shape, circular arch shape, arbitrary curve shape), convenient production and installation, good structural stability, high roof rigidity and good economic effect. Compared with the grid structure, the pipe truss structure can meet the requirements of various architectural forms, especially the construction of circular arch and arbitrary curve shape is more advantageous than the grid structure. From the stress characteristics of the grid structure, it can be seen that when its side-to-length ratio is greater than 1.5, its stress characteristics change from two-way to one-way force, so for most rectangular plane buildings, it is mainly a one-way force structure. The steel tube truss structure is similar to the plane steel truss, which belongs to the one-way force structure, but the upper chord of the truss increases the stability of the upper chord bar that controls the original plane truss, and its stability in all directions is the same, saving the amount of material. Steel tube truss structure is developed on the basis of the grid structure, compared with the grid structure has its unique superiority and practicality, the amount of steel used in the structure is also more economical. At present, this kind of structure is mainly used in some large public buildings, and it has great application potential in industrial plant column and roof truss, light steel structure and residential steel structure.
2019-10-14
On October 10, the launch of the ferritic stainless steel development project for heat exchangers in the industrial field was held in Hunan Gelun New Material. CITIC Metal Co., Ltd. Shanxi Taigang Group Co., Ltd. Taiyuan University of Technology. Hunan Gelun New Material Co., Ltd. and leaders from related enterprises nationwide. More than 60 experts attended.
2019-10-14
On October 9, Secretary of Loudi Municipal Committee, Chairman of the Standing Committee of the Municipal People's Congress. Deputy secretary of the municipal party committee. Mayor led the city leaders. The main leaders of the districts and counties and the main leaders of the municipal departments, etc. all the participants of the Loudi 2019 industry project construction site observation and promotion meeting came to Hunan glun new materials to observe. Review the company's new stainless steel material production. Gellen hypermelt. Heat exchangers. Seawater desalination and other production. Construction projects.
2019-08-26
On August 23, the company's trade union elected the first committee, the Economic Review Committee, and the Women Workers Committee, and Chen Changming was elected as the chairman of the trade union.
Contact Information
Contact Phone
Company address: 1868 Lianbin West Street, Louxing District, Loudi City, Hunan Province
Telephone: +8613786831587 (Mr. Luo)
Facebook: penny peng
Business License