Experimental Study On The Shear Behavior Of High Strength Cold-formed Steel Framing Shear Wall With Single Panel

The shear behavior of cold-formed steel stud wall in low-rise residential structures is presented here. The paper consists of two parts. One is experimental study on cold-formed steel stud walls and the other is nonlinear finite element analysis.The shear behavior of walls with steel rib panel and walls with gypsum wallboard which are made in full scale of practice engineering project is tested in this paper. The height of specimens is 3 meter and the width is 2.4 meter. The space of the wall studs is 600 millimeter. The wall sheetings are 0.42mm steel rib panel and 12mm gypsum wallboard. There are three loading methods which are monotonic, cyclic and cyclic with vertical loadings to examine the influences on the shear behavior of the loadings above. Test results show that wall sheetings have influence on the wall shear resistance greatly. The wall shear resistance strength by cyclic loading is lower 21.9%～26.8% than that of monotonic loading. The wall shear resistance for the specimens with large section is decreased under cyclic with vertical loads, however the specimens with small section is increased. The wall shear resistance for the specimens with large section is greater than that of wall shear resistance for the specimens with small section under the same loading.In this paper, nonlinear finite element analysis involving geometric large deformation and materials nonlinear is used to simulate wall specimens under monotonic loads in this paper. By comparing the finite element analysis results including phenomena with the tests, it shows good agreements between them. The shear resistance of finite element analysis is lower less than 3.5% than test, so the finite element analysis method is correct. There are followed by a detailed parametric study using nonlinear finite element analysis. The results show that the plate strip influences the shear resistance of walls lightly. With the decrease of stud spacing and the scale of highness to width (The highness of the wall is invariable) and with the increase of the highness of the steel rib panel, the shear behavior of the wall increases obviously.Through the test results and finite element analysis, we can draw a conclusion that the wall we tested can satisfy engineering application. In the end , based on research results in this paper we bring forward some problems which are need to be solved in this subject.