考虑节点刚度预制装配框架抗震性能研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
采用端部带转动弹簧的梁单元力学模型,编制相应的Fortran语言刚架计算程序,对考虑节点刚度的混凝土预制装配框架结构的动力特性及其在地震作用下的层间位移和层间位移角进行了系统研究。结果表明:混凝土预制装配框架结构的自振周期随着节点刚度的减小而不断增大,节点转动刚度对低阶振型自振周期影响较大、对高阶振型自振周期影响较小;层间位移和层间位移角随着节点刚度的增大而不断减小,在节点铰接或者节点刚度较小时不满足小震作用下的钢筋混凝土框架弹性位移角限值要求。
In this paper,a mechanics model for the frame beam element with considering joint stiffness is presented.With this model,the paper research the dynamic properties、story displacement and story drift angle of precast concrete frames that considering joint stiffness.The results showed that:period of vibration of precast concrete frames increased as the joint stiffness decreasing,joint stiffness affect period of vibration of lower order modes greater than higher modes.Story displacement and story drift angle decreasing with the joint stiffness increases,hinge joints or little joint stiffness does not meet the limit value of the elastic displacement angle of RC frame.
引文
[1]胡大柱,李国强,孙飞飞.半刚性连接多层组合框架自振周期实用计算方法[J].世界地震工程,2008,(2):68-73.
    [2]蔡建国,冯健,王蜂岚,等.考虑节点刚度的预制混凝土框架结构分析[J].东南大学学报(自然科学版),2009,(5):1054.
    [3]赵斌,刘学剑,吕西林.柔性节点预制混凝土结构的动力反应[J].同济大学学报(自然科学版),2005,(6):716-721.
    [4]何中才,王湛.结构的半刚性节点模拟[J].工业建筑,2010,(S1):293-295.
    [5]姜华,郭秉山,陈国兴,等.轻钢框架半刚性连接节点的抗震性能研究现状[J].工业建筑,2010,(S1):559-561.
    [6]张一舟,王元清,施刚,等.节点刚度对多层平面钢框架抗震性能的影响分析[J].华中科技大学学报(城市科学版),2006,(2):41-45.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心