摘要
由于装配整体式结构节点与现浇混凝土结构节点相比具有整体性差、约束弱等特点,其抗震性能随着服役期龄期的增加而退化的状况相较于现浇混凝土结构节点更加明显。该文通过装配整体式剪力墙结构节点缩尺试件的动力加载试验获得其恢复力曲线模型,并采用ANSYS有限元软件进行仿真分析,研究不同龄期及不同动力加载频率对连接节点抗震性能的影响。结果表明:随着服役期龄期的增加,装配式剪力墙节点的峰值荷载、刚度、延性系数及耗能能力等抗震性能参数均有一定程度的下降;装配式剪力墙节点抗震性能参数下降速率大于现浇剪力墙节点下降速率;随着动力加载频率的增加,装配式剪力墙节点的峰值荷载、刚度、延性系数有一定程度的下降,但耗能能力有所提高。
Compared with cast-in-situ concrete structure joints,the assembled monolithic structure joints have the characteristics of poor integrity and weak restraint,so the degradation of its seismic performance with the increase of service life is more obvious than that of cast-in-place concrete structure joints.A restoring force curve model is obtained by the dynamic loading test of the joint scale test piece of the integrated shear wall structure,and the ANSYS finite element software is used for simulation analysis to study the effect of different ages and different dynamic loading frequencies on the seismic performance of the joints.The results show that with the increase of service life,the seismic performance parameters such as ultimate bearing capacity,stiffness,ductility coefficient and energy dissipation capacity of fabricated shear wall joints all decrease to a certain extent.The decline rate of seismic performance parameter of fabricated shear wall joints is greater than that of cast-in-place shear wall joints.As the dynamic loading frequency increases,the ultimate bearing capacity,stiffness and ductility coefficient of the fabricated shear wall joints will decrease to a certain extent,but the energy consumption capacity will be improved.
作者
韩娇
丁建国
高峰
张响响
Han Jiao;Ding Jianguo;Gao Feng;Zhang Xiangxiang(School of Science,Nanjing University of Science and Technology,Nanjing 210094,China;Vocational Qualification Examination and Registration Center,Jiangsu Provincial Department ofHousing and Urban-Rural Development,Nanjing 210036,China)
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2021年第2期251-258,共8页
Journal of Nanjing University of Science and Technology
基金
江苏省住房与城乡建设厅科技项目(2018ZD076002)。
关键词
加载频率
装配整体式剪力墙节点
混凝土
结构
节点
服役期
ANSYS
抗震性能
loading frequency
assembled integral shear wall joints
concretes
structure
joints
service life
ANSYS
seismic performance
作者简介
韩娇(1993-),女,硕士生,主要研究方向:工程结构抗震与防灾,E-mail:1258822869@qq.com;通讯作者:丁建国(1962-),男,教授,博士生导师,主要研究方向:工程结构抗震与防灾、复杂系统动力学,E-mail:nustdjg@163.com。
