上翼缘作用均布荷载的钢梁整体稳定研究  

The overall stability study of steel beam with uniformly distributed load on the upper wing edge

作　　者：陈雪雪 潘文[1,2] 孙玥 CHEN Xue-xue;PAN Wen;SUN Yue(School of Construction Engineering,Kunming University of Science and Technology,Yunnan Kunming 650500,China;Engineermg Structure Seismic Mitigation and Isolation Technique Engineering Research Center of Yunnan Province,Yimnan Kunming 650500,China;School of Electrical and Information Technology,Yunnan Minzu University,Yunnan Kunming 65003 l,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500 [2]云南省抗震工程技术研究中心,云南昆明650500 [3]云南民族大学电气信息工程学院,云南昆明650031

出　　处：《交通科学与工程》2021年第3期85-90,共6页Journal of Transport Science and Engineering

摘　　要：为研究悬臂梁构件的整体稳定性,确定悬臂梁不需要进行整体稳定计算的临界条件,考虑了无支撑约束和上翼缘与刚性铺板相连2种情况,采用ABAQUS有限元分析软件对上翼缘在均布荷载作用下的双轴对称工字形截面悬臂梁进行整体稳定承载力计算。研究结果表明:上翼缘与刚性铺板相连的悬臂梁整体稳定承载力约为不设支撑时的2倍,并得到悬臂梁不需要进行整体稳定计算的临界扭转参数Kcr。In order to study the overall stability of the cantilever beam member,the critical condition for cantilever beam without global stability calculation was analyzed.Two cases of the unsupport constraint and the upper flange connection with the rigid pavement were considered,the ABAQUS finite element analysis software was used to investigate the overall stability of double axisymmetric Isection cantilever beam subjected to under uniform load at the upper flange.The results show the overall stability bearing capacity of cantilever beam connected with rigid slab at the upper flange was about twice as large as that without support.The critical torsional parameter Kcr for cantilever beam without overall stability calculation was then calculated.

关 键 词：工字形截面 悬臂梁 均布荷载 临界扭转参数 

分 类 号：TU391[建筑科学—结构工程]