竖波钢板组合剪力墙震损修复研究

钢板组合剪力墙在强震作用下受损严重，震损修复问题较为突出。现设计一片以方钢管作为边缘约束构件的竖波钢板组合剪力墙，在最大弹塑性层间位移角时的震损情况进行分析:竖波钢板组合剪力墙边缘约束方钢管刚度较大，与墙体不匹配，最终发生方钢管从地梁拔动的脆性破坏模式。对竖波钢板组合剪力墙进行震损修复，得到墙趾可更换竖波钢板组合剪力墙，然后进行拟静力试验。试验结果表明:（1）在震损后的竖波钢板组合剪力墙的墙趾处安装阻尼器，其抗震性能基本得到恢复。（2）修复后的竖波钢板组合剪力墙承载力较修复前降低了23%，但延性和耗能能力显著提升。（3）改变了竖波钢板组合剪力墙的破坏模式，由脆性破坏转化为延性破坏。借助有限元软件详细讨论了内嵌竖向波形钢板厚度和波角、轴压比、阻尼器腹板数量对修复后竖波钢板组合剪力墙抗剪承载力的影响，结果表明:改变内嵌竖向波形钢板厚度对试件抗剪承载力影响较大，而改变内嵌竖向波形钢板波角、轴压比和阻尼器腹板数量对试件抗剪承载力影响较小。结合有限元算例，提出修复后竖波钢板组合剪力墙抗剪承载力的计算公式，可为工程实际提供参考。

Research on seismic damage repair vertical corrugated steel plate composite shear wall

The steel plate composite shear wall is seriously damaged under strong earthquake，and the problem of repair is prominent. A vertical corrugated steel plate composite shear wall（CPCSW）with square steel tube as edge restraint member was designed and the damage of CPCSW at the maximum elastic-plastic interstory drift was analyzed. The stiffness of the square steel tube restrained by the edge of CPCSW was large ，and finally the brittle failure mode of the square steel tube pulling from the ground beam occurred in the CPCSW The seismic damage of CPCSW was repaired，and RCPCSW was obtained，and then the pseudo static test was carried out. The test results show that:1）the seismic performance of CPCSW was basically restored by installing dampers at the toe of the wall；2）the bearing capacity of CPCSW was reduced by 23%，but the ductility and energy dissipation capacity of CPCSW were significantly improved；3）the failure mode of CPCSW was changed from brittle failure to ductile failure. The influence of geometric on the shear bearing capacity of RCPCSW was discussed in detail with the help of finite element software. The results show that the thickness of the embedded vertical corrugated steel plate has a greater impact on the RCPCSW，while the wave angle of the embedded vertical corrugated steel plate，the axial compression ratio and the number of damper webs have a smaller impact on the RCPCSW. Combined with the finite element calculation example，the calculation formula of the shear capacity of RCPCSW is put forward，which can provide reference for engineering practice.