【摘要】 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。更多还原

【Abstract】 As a promising lateral load resisting elements in new or retrofit construction of buildings,buckling-restrained steel plate shear wall(BRSW) clamed with concrete plates has gained a great deal of attention of researchers and engineers.However,almost all of BRSWs being studied and constructed are in wide shape,of which the height is equal or less than the width.Actually,in some situations,BRSW in slim shape(the ratio of height to width>1) may be serviceable if there do not have enough space to put a wide BRSW.This paper presented a new type BRSW,which is called I-shape BRSW.The configuration of the walls was modified from normal rectangle shape to I-shape to improve their energy dissipation performance.Several experimental investigations have been conducted on this kind of slim BRSW models in 1∶ 3 scale,including monotonic loading tests and cyclic loading tests on four sets of I-shape BRSW with different height-to-width ratio from 2∶ 1 to 4∶ 1,as well as a comparative test on a normal I-shape steel plate shear wall.Experimental results are examined to reveal the wall’s failure mechanics,ductility performance,hysteretic behavior and ultimate load-carrying capacity.Analytical models have been verified by the experiments and design guidelines have been provided for the application of I-shape BRSW.更多还原