端板螺栓连接波浪腹板钢梁塑性铰转移设计方法研究  

Research on design method of plastic hinge transfer of steel beam with end plate bolt connection

作　　者：李青宁[1] 姜昊天[1] 赵花静[1] 韩春[1,2] LI Qingning JIANG Haotian ZHAO Huajing HAN Chun(School of Civil Engineering, Xi＇an University Of Architecture And Technology, Xi＇an 710055, China Xinxiang College, Xinxiang 453003 ,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]新乡学院,河南新乡453003

出　　处：《世界地震工程》2016年第4期68-76,共9页World Earthquake Engineering

基　　金：河北省地方科技项目(2011188);河南省高等学校重点科研项目(16B560007)

摘　　要：地震中传统的钢框架梁柱节点表现为延性极差的脆性破坏,主要原因是受该节点的构造、传力、焊缝及应力集中等因素的影响,节点未能发挥材料的延性,致使结构在梁端塑性铰形成之前发生脆性破坏。梁端塑性铰外移是1个解决脆性破坏的行之有效的方法。通过试验对波浪腹板钢梁发生剪切屈曲破坏的原因及钢梁翼缘应变变化规律进行理论分析,根据分析结果提出局部加强建议,得出梁尺寸,加强钢板尺寸等对塑性铰的影响;并对促使梁端塑性区域外移的加强钢板尺寸给出了计算方法,结合试验数据提出了塑性铰外移的设计方法及合理性。Earthquake in the traditional steel frame beam column joints performance is poor ductility brittle failure, the main reason is influence by the node structure, power transmission, weld stress concentration factors and node failed to take advantage of the material ductility, resulting in structure in the end beam plastic hinge formation occurred prior to brittle failure. Beam plastic hinge shift is an effective method. It through the test of wave webs girder occurred shear buckling failure reason and steel beam flange strain variation of theoretical analysis, according to the analysis results, the local reinforcement proposals and prompted the beam end plastic regional shift of strengthening plate size given the calculation method, according to the test data proved the rationality.

关 键 词：波浪腹板钢梁 延性 剪切破坏 塑性铰 外移 

分 类 号：P315[天文地球—地震学]