A NEW BEAM-COLUMN ELEMENT WITH WARPING AND SHEAR DEFORMATION EFFECTS

摘要：

An incremental virtual work equation for the three-dimensional beam-column element was proposed based on the UL method. The geometric nonlinear tangent stiffness matrix for three-dimensional beam-column element accounting for the coupling between axial, flexural,torsional, shearing and warping deformation modes was derived. The Orbison sectional strength was modified in order to consider the effects of torsion moment and warping. The elastic-plastic tangent stiffness matrix was acquired based on the flow theory. Numerical examples show that the model can be used to predict accurately the ultimate beating capacity and instability mode of three-dimensional steel frames by modeling each member using one or two elements.

关键词： 3-D steel frame Warping Shearing deformation Plastic-hinge Ultimate bearing capacity

作者: Jun-Feng Zhang Ji Ping Hao

作者单位: College of Civil Engineering, Zhengzhou University, Zhengzhou 450002, P.R. China School of Civil Engineering, Xian University of Architecture and Technology, Xian 710055,P.R. Chin

会议类型: 国际会议

会议名称: 第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)

会议地点: 长沙

会议语种:英文

页码: 268-273

在线出版日期: 2008-10-19（万方平台首次上网日期，不代表论文的发表时间）