摘要
:以混合连接自复位框架结构为研究对象,首先建立了混合连接节点的数值计算模型,提出了该类框架结构的抗震设计方法,并进行了有效验证&然后,通过罕遇地震作用下的弹塑性动力时程反应分析,对比了典型混合连接自复位框架和普通框架的抗震性能,探讨了预应力抗弯承载力比对自复位性能的影响&研究结果表明:所建立的混合连接自复位节点数值计算模型合理有效,按所提设计方法设计的自复位框架具有良好的抗震性能和明显优越的自复位能力;自复位框架较普通框架上部楼层的塑性铰发育更为充分、位移反应更为明显;是控制结构自复位能力和耗能能力等的关键参数,其取值范围通常在0.4-0.6;对于较低的楼层,可以适当地减小的取值,使楼层具有更好的耗能性能.
Taking selt-ccntering frame with hybrid ccnnection as reseerch object,the numericct analysis model of the hybrid ccnnection joint was established first,and the seismic design method of integral frame was proposed and velidated.In addition,the seismic behaviors between typical self-ccntering frame with hybrid ccnnection and general frame were ccmpared by elastoplastic dynamic time-histora analysis,besides,the effeci of prestressed Oexural capaciw ratio!#cs upon self-ccntering performance was discussed.The reseerch resultt indicated that the numerical analysis model of the hybrid ccnnection joint established in the papee was rersonable and effective,the selOcentering frame which was designed by the method had good seismic behavioe and self-centering capacitt The displaccment response and plastic hinge of self-ccntering frame upper floor incrersed more obviously than general frame,which needed te be concerned;!#cs was a key parameter te control self-ccntering abilitt and energy dissipation capaciw,the velue range was usually betteen 0.4 to 0.6.Besides,for the lower floor,■des cculd be reduccd properly to obtain better energy dissipation capacito.
作者
简斌
刘冲
綦露
JIAN Bin;LIU Chong;QI Lu(School of Civil Engineering,Chongqing University,Chongqing 400045,China;Key Laboratory of New Teehnology for Construetion of Cities in Mountain Area of the Ministry of Education,Chongqing University,Chongqing 400045,China)
出处
《工业建筑》
CSCD
北大核心
2019年第11期43-51,共9页
Industrial Construction
基金
国家自然科学基金面上项目(51178487)
中央高校基本科研业务费专项项目(2015CDJXY)
关键词
混合连接节点
自复位结构
混凝土框架
设计方法
抗震性能
hybrid ccnnection joint
self-ccntering structure
ccncreto frame structures
design method
seismic behaesoa
