灌浆UHPC连接的装配式空心剪力墙抗震性能研究  

Study on Seismic Performance of Prefabricated Hollow Shear Wall Connected by Grouting UHPC

作　　者：高湛 程亮 赵启元 范文方 魏文晖[2] GAO Zhan;CHENG Liang;ZHAO Qi-yuan;FAN Wen-fang;WEI Wen-hui(Central Southern China Electric Power Design Institute,Wuhan 430071,China;School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]中南电力设计院有限公司,武汉430071 [2]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《武汉理工大学学报》2023年第10期76-83,119,共9页Journal of Wuhan University of Technology

基　　金：中南电力设计院有限公司资助项目(40-1A-KY202219-T202)。

摘　　要：为探究灌浆UHPC连接的装配式空心剪力墙的抗震性能和破坏机理,对参考文献中的试验结果进行计算分析,在验证有限元参数有效性的基础上,设计了同尺寸的装配和现浇模型,对比其在低周往复荷载下的破坏形态、承载能力及刚度退化等抗震性能指标,并进行参数化分析,探讨了装配式模型的影响因素(孔洞率、轴压比、边缘钢筋直径等)。结果表明:装配式模型和现浇模型峰值承载力偏差在合理范围之内,装配式模型较现浇模型有较好的延性;孔洞率超过30%或高宽比大于2时模型的延性出现下降,因此孔洞率应控制在30%以内,高宽比应取为2;边缘钢筋直径和轴压比在一定范围内可提升模型的峰值承载力,但边缘钢筋直径或轴压比过大,模型的延性出现下降。In order to explore the seismic performance and failure mechanism of the prefabricated hollow shear wall connected by grouting UHPC,ABAQUS was used to calculate and analyze the tests in the references.On the basis of verifying the validity of the finite element parameters,the assembly and cast-in-place models of the same size were designed,and the seismic performance indexes such as failure forms,bearing capacity and stiffness degradation under low cyclic loading were compared.The influence factors of the assembled model(hole rate,axial compression ratio,diameter of edge reinforcement,etc.)were discussed by means of the advantage of finite element for parametric analysis.The results show that the peak bearing capacity deviation of the prefabricated model and the cast-in-place model is within a reasonable range,and the prefabricated model has better ductility than the cast-in-place model.The ductility of the model decreases when the hole rate exceeds 30%or the aspect ratio is greater than 2,so the hole rate should be controlled within 30%and the aspect ratio should be 2.Both edge reinforcement diameter and axial compression ratio promote the increase of the peak bearing capacity of the model within a certain range,but if the edge reinforcement diameter or axial compression ratio is too large,the ductility of the model decreases.

关 键 词：装配式结构 空心剪力墙 抗震性能 有限元模拟 

分 类 号：TU398.9[建筑科学—结构工程] TU317.1