钢结构梁腹板开圆孔组合节点性能数值分析  

Numerical analysis of the behavior of composite connection with opening in the beam web in steel structure

作　　者：杨娜[1] 彭中华[1] 许鑫森[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《哈尔滨工程大学学报》2012年第10期1232-1237,共6页Journal of Harbin Engineering University

基　　金：国家自然科学面上基金资助项目(51078026);新世纪优秀人才支持计划资助项目(NCET-11-0571);中央高校基本科研业务费专项资金资助项目(2012JBM007)

摘　　要：为了了解混凝土楼板组合效应对梁腹板开圆孔型节点性能的影响,用软件ABAQUS建立此类组合节点的有限元模型,完成考虑其尺寸、削弱参数变化的数值分析.研究结果表明:混凝土楼板的组合效应增强了节点的强度和刚度,加大了节点在梁柱根部发生脆性破坏的可能性且影响了腹板开圆孔节点的破坏模式.同时考虑组合效应后,节点的临界开孔半径比不考虑组合效应下的临界开孔半径大.在此基础上提出了在考虑混凝土楼板组合效应的情况下民用中高层钢结构节点的合理开孔尺寸.In order to examine the composite action composite joints with opening in the beam web, the of the concrete slabs on the behavior of the beam-to-column ABAQUS software has been selected to build a finite element model of the joints. The numerical analysis taking account of the change of joint size and weakening parameters, shows the composite action of concrete slabs increased the strength and stiffness of the possibility of brittle failure of beam-to-column composite connection, and affected the connection, and improved damage mode to the joints with openings in the beam web. Besides, when the composite action is taken into account, the critical opening radius of the joint is larger than that not considering the composite action. At last, a reasonable opening radius is presented for the joints of steel structure of civil medium and high-rise buildings.

关 键 词：腹板 梁柱节点 组合效应 抗震性能 数值分析 钢结构 

分 类 号：TU391[建筑科学—结构工程]