Influence of Openings on Out-of-plan Flexural Performance of Light Steel Skeleton Light Concrete Composite Wall
Out-of-plan bending tests were carried out on two full-scale lightweight steel-framed lightweight concrete composite wall panel specimens to analyze the effects of window openings on the out-of-plan damage characteristics,load-deflection curves,initial stiffness and its degradation.The test shows that,under the out-of-plan bending condition of lightweight steel frame lightweight concrete composite wall,the cracks on the tensile side of the wall panel develop along the distribution keel,after opening the window openings,the stress concentration phenomenon occurs at the corners of the window openings,and the cracks extend from the corners of the windows to the surroundings.The ultimate bearing capacity of the lightweight steel skeleton lightweight concrete composite wall was reduced by 26.22％.A refined finite element model of the lightweight concrete composite wall with lightweight steel frame was established on the basis of the test,the numerical simulation and parametric analysis of the out-of-plan force performance was carried out,and the effects of variables,such as the thickness of the lightweight steel keel and the thickness of the wall panels on the out-of-plan bending performance of the wall panels were discussed.
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