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屈曲约束钢板剪力墙具有刚度大、抗震性能好、适用范围广的优点,大高宽比屈曲约束剪力墙可用于钢结构住宅等剪力墙尺寸受限制的建筑中。提出一种新型大高宽比屈曲约束钢板剪力墙,并对4组这种屈曲约束钢板剪力墙的缩尺模型进行单调加载和循环加载试验,并与一组纯钢板剪力墙进行对比。试验结果证明,预制混凝土板可以有效地对钢板平面外屈曲进行约束,从而大大提高钢板剪力墙的承载力和耗能性能。还通过理论研究,得到这种屈曲约束钢板剪力墙初始刚度和屈服承载力的理论公式。通过试验结果、理论公式以及有限元分析结果的对比,验证理论公式的正确性。
The buckling-restrained steel plate shear wall has the advantages of large rigidity, good anti-seismic performance and wide range of application. The large aspect ratio buckling restrained shear wall can be used in buildings with limited size of shear walls such as steel structure houses. A new high aspect ratio buckled constrained steel plate shear wall is proposed. Four sets of scale models of such buckled constrained steel plate shear walls are tested monotonously and cyclicly, and compared with a set of pure steel plate shear walls . The test results show that the precast concrete slabs can effectively restrain the out-of-plane buckling of the steel plate and greatly improve the bearing capacity and energy dissipation performance of the steel plate shear wall. The theoretical formulas of the initial stiffness and the yield strength of the plate-shear wall with buckling constraints are also obtained through theoretical studies. Through the comparison of test results, theoretical formula and finite element analysis, the correctness of the theoretical formula is verified.