Application Of Cfst Column Portal Frame Structure In The Steel-1 Million Tons Of Cold-rolled Plates Engineering

At present, China's rapid economic development, social investment in fixed assets increasing rapidly, especially in the iron and steel, metallurgy high energy-consuming industries rapid increase in fixed asset investment, steel in the country-such a context, investment in fixed assets is to increase year after year, following the 2004 2.3 billion investment in the hot-rolled thin strip project to start construction in 2005 after the commissioning in 2006 invested 3 billion began building 1 million tons of cold-rolled plates, in the process and have started building a number of large-scale projects, This large-scale project, plant construction accounts for about 8-25% of the total investment,10 million on their investment, while on the move billion, the paper intended to plant structure of the iron and steel industry as the background, the speed of construction and conservation of plant investment form.This paper-steel 1 million tons of cold-rolled plates of background on the main door frame concrete pipe production, installation and in the production and installation process for attention. This structure forms in the use of plants occurred in the course of a number of quality problems (left photo project), and the question of the quality of these were also discussed.CFST portal frame structure of the plant and better economic performance, and if some of their amendments will be changed to steel roof truss roof beam will be on-steel pipe columns, its economic performance will be more objective.