双钢板高强混凝土联肢剪力墙抗震性能分析

Seismic behavior of double steel plate- high strength concrete composite coupled shear wall

为研究双钢板高强混凝土联肢剪力墙抗震性能,首先进行了1个试件的拟静力试验,试件的破坏形态为压弯破坏,破坏模式为连梁端部剪坏,端柱底部钢管和墙肢底部钢板屈曲后混凝土压溃。利用ABAQUS软件建立试件的有限元模型,计算结果与试验结果吻合良好。在此基础上,通过单调推覆分析研究了边缘约束构件形式、连梁形式及耦连比等因素对组合联肢剪力墙抗震性能的影响。提出组合联肢墙的抗弯承载力计算公式,计算值与试验值吻合较好。

In order to study the seismic performance of double steel plate-high strength concrete composite coupled shear wall, one specimen subjected to cyclic lateral loading was tested. The test results indicate that the specimen fail in axial-flexural mode, characterized by failure of coupling beams, local buckling of boundary steel tubes and steel plates, followed by the compressive crushing of concrete at the wall base. Finite element modelwas constructed and validated by comparisons with test data. Monotonic pushover analyses were performed to investigate the effects of key parameters on seismicbehavior of composite coupled walls. These parameters includeboundary constraints, coupling beam types and coupling ratios. A simplified formula was proposed to evaluate the lateral load-carrying ca- pacity of the double steel plate composite couoled shear walls, which provided satisfactory predictions.