加强上翼缘单轴对称工字型双跨连续钢梁整体稳定性分析  

Analysis on Overall Stability of Monosymmetrical Two-span Continuous Steel I-beams with Top Flange Strengthened

作　　者：张孝芳[1] 刘忠[1] 王翠翠[1] 李春月[1] 肖辉[1] 

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105

出　　处：《工程建设与设计》2011年第8期74-76,80,共4页Construction & Design for Engineering

摘　　要：利用有限元分析软件ANSYS,建立了加强上翼缘单轴对称工字型双跨连续钢梁的有限元分析模型,针对集中荷载作用下的双跨连续钢梁的整体稳定性,进行了特征值屈曲分析。结果表明:双跨连续钢梁临界荷载值远高于相应简支钢梁的临界荷载值,双跨连续钢梁的整体稳定性受跨中集中荷载比的影响较大。The monosymmetrical I-shaped two-span continuous steel beams with top flange strengthened were modeled by finite element analysis software ANSYS.Two-span continuous beams which were loaded in both midspans were researched.Eigenvalue buckling analysis was done.And analysis results were showed： with same spans,the critical loads of continuous beams were larger than that ofsimplybeams;overall stabilityofcontinuous beams was influenced largelybyload ratio.

关 键 词：加强上翼缘 单轴对称 工字型截面 双跨连续钢梁 稳定性 

分 类 号：TU311.2[建筑科学—结构工程]