翼缘削弱型节点钢框架结构力学性能研究(1).doc

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翼缘削弱型节点钢框架结构力学性能研究#
韩明岚1,王燕2**
(1. 青岛理工大学理学院,青岛 266033;
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2. 青岛理工大学土木工程学院,青岛 266033)
摘要:对翼缘削弱型节点框架进行了内力、变形、稳定承载力以及梁平面外屈曲等方面的综
合分析,利用 Matlab 数值语言编制有限元程序对框架进行了变形分析,通过特征值屈曲分
析和非线性屈曲分析对框架进行了稳定承载力计算,利用 ANSYS 采用两种不同形式的单元
对梁进行了平面外屈曲分析,将计算结果和普通节点框架的计算结果进行对比,详细阐述了
梁端削弱对翼缘削弱型节点钢框架的力学性能的影响。研究结果表明:梁翼缘削弱会增加框
架的侧向变形、降低框架的稳定承载力,导致梁更易发生平面外屈曲,在工程实际应用中要
充分考虑梁翼缘削弱的影响,避免出现不必要的经济损失。
关键词:结构工程;翼缘削弱型节点;钢结构;变形分析;稳定承载力;平面外屈曲
中图分类号:TU391
Study on Mechanical Performance in the Steel Frame
Structures with Reduced Beam Section Connections
HAN Minglan1, WANG Yan2
(1. School of Science,Qingdao Technological University,Qingdao 266033;
2. School of Civil Engineering,Qingdao Technological University,Qingdao 266033)
Abstract: Comprehensive analyses that include internal forces, deformation, stability bearing
capacity and beam out-plane bucking were performed in the steel buildings with reduced beam
section (RBS) connections. Deformation was analyzed using finite element program written by
numerical language Matlab, stability bearing capacity was studied using eigenvalue buckling and
nonlinear buckling analysis, out-plane bucking of the beam was analyzed using two different
kinds of elements in software ANSYS, at last, the results pared with that of the ordinary
connections, the effects of the beam end cuts on mechanical properties in the steel buildings with
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