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以由格构冷弯薄壁轻钢框架和加气混凝土砌块填充墙共同构成的组合墙体为研究对象完成了组合墙体、单纯轻钢框架和单纯填充墙体3个试件的抗侧力试验,观察各试件在水平荷载作用下的变形过程和破坏形式,得到3个试件的抗侧极限承载力,并采用简化方法进行分析和对比。结果表明,单纯格构轻钢框架水平抗侧承载力和刚度均较低,而单纯填充墙体尽管初始水平抗侧刚度大,但墙体没有延性,且其抗侧极限承载力极低。组合墙体的水平抗侧刚度比单纯轻钢框架高得多,且其抗侧极限承载力远远大于格构轻钢框架与单纯填充墙体的极限承载力之和。组合墙体和单纯填充墙在水平荷载作用下墙体的破坏形式均为对角线上的斜裂缝内外贯通。三支杆模型适合于组合墙体抗侧极限承载力的计算。
A composite wall consisting of cold-formed thin-walled light steel frame and aerated concrete block filled wall was taken as the research object to finish the composite wall, the simple light steel frame and the simply-filled wall Force test. The deformation process and failure mode of each specimen under horizontal load were observed. The ultimate load-carrying capacity of the three specimens was obtained and compared with the simplified method. The results show that the bearing capacity and the stiffness of lightweight steel frame are lower than those of pure steel frame. However, the wall thickness is not ductile but the ultimate bearing capacity is very low. The lateral stiffness of composite wall is much higher than that of simple steel frame, and the ultimate resistance of the composite wall is far greater than the sum of the ultimate bearing capacity of lattice steel frame and purely filled wall. Combination of wall and simply fill the wall under horizontal load under the form of wall damage are diagonal cracks within and outside through. The three-strut model is suitable for the calculation of the ultimate bearing capacity of combined wall.