钢框架梁柱改进型节点力学性能分析  

Mechanical behavior analysis on improved connections of steel frames

作　　者：雷劲松[1,2] 姚勇[1] 邹银生[2] 

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]湖南大学土木工程学院,湖南长沙410082

出　　处：《四川建筑科学研究》2009年第2期41-44,48,共5页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50848008);四川省自然科学基金资助项目(03JY029-038-2)

摘　　要：发生在美国的Northridge地震和日本的阪神地震中,大量的钢框架梁柱节点发生严重的脆性破坏,显示出节点构造方面还存在一定的问题。通过对节点的有限元计算对比分析,得到在反复荷载作用下,构造经过改进的节点,其强度和刚度较好,能够满足我国抗震规范的要求;塑性转动能力较好,可以满足抗弯钢框架连接塑性转动能力的要求;加载到极限状态时,节点域变形很小,满足强节点弱杆件的抗震设计原则;且构造简单,易于现场施工。Numerous rigid connections brittle fracture happened in the 1994 Northridge earthquake in America and 1995 Hyogoken- Nanbu earthquake in Japan, which indicate that cognitions on the damage mechanism of beam to column connection are rather inadequate. By using the FEM author analyzed those connections. Under the cyclic loading test, the strength and rigidity of improved connections is better and can satisfy the request of code for seismic design of buildings;The plastic rotation ability is better, may satisfy the request of the anti-curved steel frame connection plastic rotation ability. When loading increase to maximum load, the deformation of joint-panels is very slighdy and can satisfies principles of general design method;The structure is simple and can be used conveniently.

关 键 词：有限元 对比分析 塑性转动能力 滞回性能 

分 类 号：TU393.2[建筑科学—结构工程]