钢管桁架节点偏心次应力分析  

Joint Eccentric Secondary Stress Analysis of Steel Tubular Truss

作　　者：王灿 WANG Can(China Design Group Co.,Ltd.,Nanjing,Jiangsu 210014,China)

机构地区：[1]中设设计集团股份有限公司,江苏南京201104

出　　处：《黑龙江交通科技》2021年第11期81-82,共2页Communications Science and Technology Heilongjiang

摘　　要：为对应用于实际工程的钢管桁架次应力进行研究,通过建立有限元模型的方式对三种不同类型的钢管桁架及组合桁梁的次应力水平进行了有限元分析,最终得到如下结论:节点偏心和设置混凝土桥面板均可对钢管桁架的次应力造成影响;桁架节点偏心对次应力的影响还会受到加载模式的影响;当组合桁梁桥面板尺寸较大时,其对桁架次应力的影响大于节点偏心对次应力的影响。In order to study the secondary stress of steel tubular truss,the finite element model of three different types of steel tube truss and composite girder were built and the secondary stress was researched based on the finite element analysis.The results shown that:the eccentric nodes and the concrete bridge deck can affect the secondary stress level;the influence of eccentricity of truss joint on secondary stress was also affected by loading mode;when the size of deck was large,its influence on secondary stress was greater than that of joint eccentricity.

关 键 词：桥梁工程 桁架 次应力 

分 类 号：U442[建筑科学—桥梁与隧道工程]