土木工程与管理学报2023，Vol.40Issue(6)：119-127,9.DOI:10.13579/j.cnki.2095-0985.2023.20230121
新型自复位耗能剪力墙的数值模拟
Numerical Simulation of a New Self-centering Energy-consuming Shear Wall
摘要
Abstract
In order to improve the energy dissipation and reset capacity of the shear wall system and enhance the recoverability of the shear wall structure after earthquake,a new type of self-centering energy-consuming shear wall is proposed,which disconnects and installs energy-consuming dampers in the middle of the limb connecting beams,and make a horizontal slit at the corner of the wall to pro-vide the rocking.The construction of the new self-centering shear wall as well as the design method are presented.The fine finite element model of a new self-centering energy-consuming shear wall is established by nonlinear numerical simulation,and six numerical analysis models are established with axial pressure ratio,number of prestressing tendon roots in a single wall limb,and prestressing tendon spacing as the analytical parameters.The results show that the reduction of axial pressure ratio of the wall limb can reduce the residual deformation of the model,and when the axial pressure ratio is 0.4,the maximal residual deformation rate is only 4.5％.Compared with the SW4,when the prestressing tendon is increased by half,the residual displacement was reduced by 65.8％.Therefore,the effect of reducing the residual deformation of the new self-centering energy-consuming shear wall and improving the resetting capacity by decreasing the axial pressure ratio of the member as well as increasing the prestressing tendons is significant.关键词
自复位剪力墙/复合连梁阻尼器/有限元分析/滞回性能/抗震性能Key words
self-centering shear wall/composite beam damper/finite element analysis/hysteretic performance/seismic performance分类
建筑与水利引用本文复制引用
朱广治,刘建明,孙家腾..新型自复位耗能剪力墙的数值模拟[J].土木工程与管理学报,2023,40(6):119-127,9.基金项目
河北省自然科学基金(E2019203413) （E2019203413）
