(1 华东建筑设计研究院有限公司, 上海 200011;2 上海装配式建筑技术集成工程技术研究中心, 上海 200011)

摘要: 以足尺低层双面叠合夹心保温剪力墙试验楼为研究对象,基于 ABAQUS 研究双面叠合夹心保温剪力墙结构的数值模拟方法,并建立有限元模型,通过对比计算自振频率和实测自振频率验证数值模拟方法的可行性。 另外,建立有、无外叶墙模型,分别进行模态分析和推覆分析,研究外叶墙对双面叠合夹心保温剪力墙结构动力特性、抗侧刚度和抗震承载力影响,结果表明,外叶墙和桁架筋连接件对结构动力特性影响有限,可提高结构抗震承载力;对有、无外叶墙模型分别进行弹性时程分析,结果表明,两个模型的基底剪力最大差值为 9. 4%,有外叶墙模型基底剪力不一定比无外叶墙模型大。 综上分析,建议低层双面叠合夹心保温剪力墙结构进行抗震设计时,可简化为无外叶墙结构进行地震内力计算。

关键词: 双面叠合夹心保温剪力墙结构; 数值模拟方法; 推覆分析; 抗震设计方法

中图分类号:TU375,TU317+. 1 文献标志码:A 文章编号:1002-848X(2022)23-0014-05DOI:10. 19701 / j. jzjg. HJZL2203

Research on seismic design numerical simulation method of low-rise double-faced superimposed sandwich insulation shear wall structure

WU Xueshu1,2, WANG Pingshan1,2, ZONG Bin1,2, LI Jinjun1,2

(1 East China Architectural Design and Research Institute Co. , Ltd. , Shanghai 200011, China; 2 Shanghai EngineeringResearch Center of Assembly Building Technology Integration, Shanghai 200011, China)

Abstract: Taking the full-scale low-rise double-faced superimposed sandwich insulation shear wall test building as theresearch object, the numerical simulation method of double-faced superimposed sandwich insulation shear wall structure wasstudied based on ABAQUS, and the finite element model was established. The numerical simulation method was verified tobe feasible by comparing the calculated natural frequency with the measured natural frequency. The model with and withoutouter prefabricated wall was established. Modal analysis and pushover calculation were carried out respectively. Theinfluence of outer prefabricated wall on the dynamic characteristics, lateral stiffness and seismic bearing capacity ofdouble-faced superimposed sandwich insulation shear wall structure was studied. The results show that the outerprefabricated wall and truss reinforcement connectors have limited influence on the dynamic characteristics of the structure andcan improve the seismic bearing capacity of the structure. The elastic time history analysis was carried out for the model withand without outer prefabricated wall respectively. The results show that the maximum difference percentage of the base shearof the two models is 9. 4%. The base shear of the model with outer prefabricated wall is not necessarily greater than that of themodel without outer prefabricated wall. So, it is suggested that the low-rise double-faced superimposed sandwich insulationshear wall structure can be simplified as a structure without outer prefabricated wall for seismic internal force calculation.

Keywords:double-faced superimposed sandwich insulation shear wall structure; numerical simulation method; pushoveranalysis; seismic design method

∗国家重点研发计划资助(2018YFD1100903)。

第一作者:吴学淑,博士,高级工程师,一级注册结构工程师,主要从事装配式结构研究,Email:xueshu_wu@ 163. com。

[引用本文] 吴学淑,王平山,纵斌,等. 低层双面叠合夹心保温剪力墙结构抗震设计数值模拟方法研究[ J]. 建筑结构, 2022, 52 ( 23): 14-18, 119. WU Xueshu, WANG Pingshan, ZONG Bin, et al. Research on seismic designnumerical simulation method of low-rise double-faced superimposed sandwich insulation shear wall structure[ J]. BuildingStructure,2022,52(23):14-18,119.