【作者】 朱柏洁； 张令心； 王涛；

【Author】 ZHU Bai-jie;ZHANG Ling-xin;WANG Tao;Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics,China Earthquake Administration;

【机构】 中国地震局工程力学研究所中国地震局工程与工程振动部门重点实验室；

【摘要】 本文通过5个拟静力试验检验了普通型钢板剪切阻尼器和形状优化型钢板剪切阻尼器的力学性能,对比分析了优化形状和轴力对阻尼器力学性能的影响。试验结果表明:阻尼器设计公式计算值与试验结果吻合较好,误差在10%以内;阻尼器的耗能板形状经过优化后,极限位移角增加33%,耗能区域由四角转移至中部,应力和应变集中现象得到明显改善,有效降低了夹持连接部位钢板的断裂损伤发生概率;与设计值相比,轴力可提高阻尼器的屈服承载力但使刚度有所下降;基于装配式思想设计的全螺栓连接阻尼器易于更换,较传统焊接的连接方式避免了焊接应力的不利影响,大幅度减少了修复时间与成本。更多还原

【Abstract】 The mechanical behavior of five steel shear panel dampers with or without optimized shapes were tested cyclically to examine the influences of the shape optimization and the axial loads. The test results show that the stiffness and strength design equations can predict the behavior with the difference to the test values less than 10%. The ultimate shear deformation of optimized dampers is 33% larger than the traditional one without optimization. Unlike the traditional damper where the plasticity was concentrated in the four corners, the optimized damper yields starting from the center of the panel, which significantly improves the plasticity strain and stress concentration, thus reducing the fracture probability. Compared with the design values, the axial loads can increase the shear bearing force, but decreases the stiffness. Finally, it is found that the all-bolt assembled damper can be easily replaced, and avoid the adverse effect from the welding, significantly reducing the repairing time and cost.更多还原