简支跨方钢管桁架次应力有限元分析  

Finite Element Analysis on Scondary Stress for Simple Supported Span Square Steel-pipe Truss

作　　者：王慧[1] 李长永[1] 

机构地区：[1]华北水利水电学院,河南郑州450011

出　　处：《华北水利水电学院学报》2008年第1期47-50,共4页North China Institute of Water Conservancy and Hydroelectric Power

摘　　要：以有限元软件ANSYS为平台,建立了26榀节点理想铰接和节点具有一定刚性的简支跨方钢管桁架模型,对比分析了对应不同的几何参数、次应力的分布状况以及次应力对结构整体受力性能的影响.结果表明,某些杆件的次应力已达到一定数值,且随几何参数的改变,呈现一定的变化规律,在设计时应予以考虑.Based on FEA software ANSYS,26 two-span continuous square steel-pipe truss models with hinge joints or rigid joints are presented ,the distributions of secondary stress and the influences on the mechenical behavior of total structure are analysed. The results indicate that,the scondary stress on several links has reached the certain value,and changes regularly following the change of geometric parameters. It should be considered in engineering design.

关 键 词：方钢管桁架 次应力 几何参数 

分 类 号：TU392.3[建筑科学—结构工程]