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为了解决核岛结构中屏蔽厂房的剪力墙在地震作用下的安全性能问题,对9个1∶5缩尺试件进行了低周往复拟静力试验.通过试验研究了双钢板混凝土组合剪力墙试件的刚度变化、破坏模式和耗能能力等特性,分析了钢板厚度、栓钉间距、竖向荷载以及加劲肋设置等因素对组合剪力墙抗震性能的影响.结果表明:双钢板混凝土组合剪力墙有很好的延性和耗能能力;钢板厚度、竖向荷载和加劲肋的设置都对剪力墙的抗震性能有很大的影响,而栓钉间距对其影响不大.在试验的基础上对部分试件进行了有限元数值分析,通过与试验结果的比较发现两者的结果能够较好吻合.最后,对本试验研究成果和核岛结构双钢板混凝土剪力墙已有研究成果进行了对比分析,并对以后的试验设计提出了改进的方向.
In order to solve the safety performance of the shear wall of a shielded workshop in the nuclear island structure under the action of earthquake, low-cycle reciprocating quasi-static tests of nine 1: 5 scale specimens were carried out. The effects of double-plate concrete shear The wall stiffness, the failure mode and the energy dissipation capacity of the wall were analyzed. The influences of the thickness of the plate, the spacing of the pegs, the vertical load and the setting of stiffeners on the seismic performance of the composite shear wall were analyzed. Concrete composite shear wall has good ductility and energy dissipation capacity; the thickness of steel plate, vertical load and stiffener settings have a great impact on the seismic performance of the shear wall, and the stud spacing has little effect on it. Based on the experimental results, some of the specimens were analyzed by finite element method and the results were compared with the experimental results to find a good agreement.Finally, the results of this study and the nuclear island structure of double-steel concrete shear walls have been The research results are compared and analyzed, and the future experimental design put forward the direction of improvement.