摘要：荷载试验是评定桥梁承载能力及安全性最直接和最有效的办法。通过建立钢桁架人行天桥的有限元模型，分析了桥梁在设计人荷载下的静力特性，同时进行了模态分析。通过荷载试验，实际测量了桥梁控制截面的应变和挠度。试验研究表明，桥梁实测应变和挠度都低于理论值，试验荷载效率、校验系数和残值比等指标均满足城市桥梁检测技术标准的要求，试验桥跨在力学性能上满足设计和使用的要求。 关键词：荷载试验；有限元；校验系数；
美术馆旁边的动物园 工业用地>明清笔记小说Load testing research of cities steel truss footbridge
Yao XiangyuLi Zhenxing
(1.Guangzhou Construction Quality and Safety Testing Center, Guangzhou 510699, China; 1.Guangzhou Cheng An Bridge Testing Ltd, Guangzhou 510420, China)
世界钢号手册
Abstract: Load testing is a bridge carrying capacity and safety of the most direct and effecti
金钩月饼ve way to assess. The finite element model of steel truss footbridge was established, static characteristics of the bridge was analyzed under the load of the crowd, simultaneously the modal analysis was conducted. By loading test, the strain and deflection of bridge control section was measured. The research had shown that bridges measured strain and deflection were lower than the theoretical value, test load efficiency, calibration factor and residual value ratio meet the city’s bridge inspection technology standards, the bridge meet the requirements of designing and using on the mechanical properties.
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