摘要
本文对双向地震作用下传统框架和楼板局部设缝框架进行了动力弹塑性分析。结果表明,楼板局部设缝框架在极限状态下框架梁端受拉钢筋应力高于框架柱相应值,并且塑性铰主要分布在框架梁端,呈梁铰屈服机制,而传统框架塑性铰主要分布在柱端,呈柱铰屈服机制。因此楼板局部设缝框架能满足"强柱弱梁"的抗震要求,从而改善了结构的抗震性能。
In this paper,the elastic-plastic dynamic analysis of the traditional frame and the frame with local slot in floor slab is carried out under bidirectional seismic action. The results show that the stress in tensile reinforcement of beam ends of the frame with local slot in floor slab is higher than that of the column ends,and plastic hinges are mainly distributed in the ends of the frame beam,showing the beam plastic hinge yield mechanism but plastic hinges of the traditional frame are mainly distributed in the ends of the frame column,showing the column plastic hinge yield mechanism. Therefore the frame structure with local slot in floor can meet the requirement of strong column weak beam,which improves the seismic performance of the structure.
出处
《工程抗震与加固改造》
北大核心
2016年第6期24-31,共8页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金资助项目(51368007)
广西高校科学技术研究重点项目(2013ZD047)
广西自然科学基金项目(2014GXNSFAA118327)
关键词
框架
双向地震
设缝
动力弹塑性
塑性铰
frame
bidirectional seismic
slotting
dynamic elastic-plastic
plastic hinge
作者简介
张敏（1965～），男，江西南昌人，教授，研究方向：结构抗震与减震 E-mail：zhmzm@126．com
