大跨度桁架结构人行天桥力学性能分析  

ANALYSIS OF MECHANICAL BEHAVIOR OF LONG-SPAN TRUSS FOOTBRIDGE

作　　者：潘从建[1] 张高明[1] 陈才华[1] 

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《钢结构》2014年第8期36-39,共4页Steel Construction

摘　　要：基于结构概念分析不同桁架形式人行天桥的力学特点。应用有限元计算方法,分析不同腹杆布置形式及楼板对钢结构人行天桥的变形特点、非对称荷载敏感性、整体稳定及舒适度性能的影响结果表明:腹杆的空间布置及楼板对人行天桥结构的力学性能影响明显。It is analysed the mechanical features of long span truss footbridge based on structural concept. Detailed research in FEM method is focused on characteristic of structural deformation, sensitivity of asymmetric load, overall buckling behavior and comfortable degree. The results of FEM model indicate that various spatial forms of web members cause obvious effects on the mechanical behavior of the truss bridge.

关 键 词：人行桥 桁架 舒适度 

分 类 号：U448.11[建筑科学—桥梁与隧道工程] U441[交通运输工程—道路与铁道工程]