硅酸钙板轻型木结构剪力墙抗震性能试验研究

Experimental study on seismic behavior of light wood-framed shear wall with superposition of calcium silicate panels with good fire resistance as cladding was carried out. Monotonic loading tests were conducted on 50 specimens of five different types of sheathing-to-framing joints to analyze the failure modes, bearing capacity and deformation capacity. On the basis of the study of joints, four walls were performed of cyclic tests to get the failure modes, bearing capacity, displacement ductility coefficient, etc. The research results show that stiffness and bearing capacity of joints can be significantly increased by changing the materials of panel and keel. The domestic poplar plywood, calcium silicate panel and poplar LVL can replace the imported OSB and SPF as the materials of panel and keel of light wood-framed shear walls. Calcium silicate panel can not only replace the wood panel as the structural panel, but also can act as a fireproof panel. A 10 mm-thick calcium silicate panel is preferred as a wall panel. Then, based on OpenSees, the numerical analysis of the walls considering the monotonic and cyclic loading are carried out, and the analysis results are in good agreement with the test results. The coefficient of variation of bearing capacity is 16.5% through the numerical analysis method. Based on experiments and finite elements analysis results, the shear strength of light wood-framed shear walls with calcium silicate panels is given.