The Design And Study Of Cold-formed Thin-wall Steel Wall

With the continuous development of housing industrialization and urbanization in China,the cold-formed thin-walled steel residential system is attracting more and more attention because of its characteristics of light high strength,green environmental protection,thermal insulation and prefabricated dry work.Cold-formed thin-walled steel residential system in the low,multi-storey building construction has great potential.However,it is still in its infancy that China's exploration and application for the system.In view of the wall for the load-bearing system,the bearing capacity of the size of the factors that affect the bearing capacity of the factors need further study.Therefore,there are many urgent problems to be solved,in the cold-formed thin-walled steel wall keel design.Based on the understanding of the test and theory of the bearing capacity of the cold-formed thin-walled steel girders at home and abroad,the structural form of the traditional cold-formed thin-walled steel house system be studied,and the new cold-formed thin-walled steel building solid wall technology be analyzed in detail.The new solid wall evolved from the traditional hollow structure,and the light polymer mortar be evenly poured on the surface and the gap of the wall keel after the wall keel side be covered with the tendons.This solid structure not only improve the thermal insulation performance of the wall by cutting off the thermal bridge,but also effectively prevent the inner and outer instability of the wall keel plane,thus improving the overall bearing capacity of the wall keel.Based on the comparative study of the calculation theory of the cold-formed thin-walled C-shaped steel axial compression members and the theory of wall keel design at home and abroad,it is found that the cold-formed thin-walled steel house system mainly depends on the wall load,and the bearing capacity of the wall is mainly Constitute the pillars of the wall keel decision.Other constituent materials of the wall,such as both sides of the panel and the internal filling material,only play a role in preventing the component from falling out of the plane.Aiming at the stress characteristics of the cold-formed thin-walled steel wall keel and the influence factors of bearing capacity,the solid model of wall keel of four different working conditions be established by ANSYS finite element analysis software.By applying a series of steps such as constraint and load,solution and post-processing,the relevant result data based on the hypothesis be obtained.According to the result data,the yield equivalent,yield displacement,ultimate load and ultimate displacement of wall keel under different working conditions be determined by energy equivalent area method.The load-displacement curves of the cold-formed thin-walled steel girders with different column spacing be compared by means of regression analysis.The results showed that,with the keel spacing increases,the yield and ultimate load of the keel be reduced,and the yield displacement and ultimate displacement of the keel be increased.Comparing the load-displacement curve under the condition of the opening of different keel columns,it is found that the yield load,ultimate load and ultimate displacement of the keel be reduced when the keel column with holes,and only the yield displacement be increased.