| Web Light-Gage steel joist structure system (Web steel) is a new type of steel structure, coming from Canada with such many advantages as higher standardizing, assigning space flexible, good performance of the seismic resistant, industrialization producing, short Construction period, protecting environment and economizing energy sources et al. This kind of structure has been used mostly in low story residential building for 20 years in North America. It agrees our national estate policy applying Web steel to multiple-story residential building. Web steel has a good future in China.Web steel is made of small trusses and has complex constitution. There is no design standard and code for this kind of structure. Testing and analysis are needed.A series of testing research and finite element analysis were done in Wuhan University of Technology for the Web steel truss beam, truss column, wall and joint.Taking Web steel wall as the research object in this thesis, a series of testing and finite element analysis were done to the mechanical performance of wall as follow:1. Bearing capacity experiments were finished for 5 Web steel wall. The distribution rules of the displacement and strain are analyzed for each loading level. The failure mode of Web steel wall is understood and the loading capacities are obtained. In addition, base on the testing results, some ways were proposed for improving ultimate carrying capacities of walls.2. ANSYS software was used to build up the finite element calculation model of Web steel wall. The finite element analysis results have a good accordance with the experimental data, showing the method is right and valuable of building the wall analysis model.3. the ultimate carrying capacities and failure modes of wall were analyzed and calculated by finite element method. The impact factors of the wall bearing capacities were summarized, which were useful for more research.
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