基于能量的新型槽口-无粘结水平接缝装配式剪力墙结构的抗震性能评价

Seismic performance evaluation of the precast shear wall structure with new rabbetunbond horizontal connection based on energy

为研究新型槽口-无粘结水平接缝装配式剪力墙结构的抗震性能,以江苏省海门市中南世纪城96号楼为研究对象,根据ABAQUS有限元软件采用等效整体的模拟方法建立槽口-无粘结水平接缝装配式剪力墙结构的有限元模型,提出无粘结区的本构模型并进行验证,对整体结构进行动力弹塑性时程分析,并采用能量法进行抗震性能评价,与常规接缝剪力墙结构及现浇剪力墙结构进行对比,结果表明:槽口-无粘结水平接缝装配式剪力墙结构的层间位移角沿楼层高度变化比较均匀,没有出现薄弱层,结构整体刚度分布较均匀,其滞回耗能需求值小于滞回耗能能力值,具有与现浇剪力墙结构相当的耗能能力,在6度罕遇地震作用下不至于倒塌,满足抗震性能要求.

In order to study the seismic performance of precast shear wall structure with new rabbet-unbond horizontal connection,taking Building No.96,Zhongnan Century City,Haimen city,Jiangsu Province,as the research object,the finite element model of precast shear wall structure with new rabbet-unbond horizontal connection is established by using ABAQUS finite element software according to equivalent whole simulation method.And the constitutive model of unbonded zone is proposed and verified.Then,the dynamic elastoplastic time history analysis of the whole structure is carried out.What's more,the seismic performance evaluation is carried out by using the energy method,which is compared with the conventional joint shear wall structure and the cast-in-place shear wall structure.The results show that inter-story displacement angle of precast shear wall structure with rabbet-unbond horizontal connection is uniform along the building height with no weak layer,and the overall stiffness distribution is also uniform.And its hysteretic energy dissipation demand value is less than the hysteretic energy dissipation capacity,and the energy dissipation ability is similar with that of cast-in-place shear wall structure,which indicates that there is no collapse under 6 degrees severe earthquake and satisfies the seismic performance requirement.