某两跨中承式钢箱异型拱桥荷载试验分析  

Load test and analysis of a two span half through steel box shaped arch bridge

作　　者：林彦哲 Lin Yanzhe(Fujian Academy of Building Research Co.,Ltd.,Fujian Provincial Key Laboratory of Green Building Technology,Fuzhou 350025,China)

机构地区：[1]福建省建筑科学研究院有限责任公司,福建省绿色建筑技术重点实验室,福建福州350025

出　　处：《山西建筑》2020年第23期139-142,共4页Shanxi Architecture

摘　　要：以某两跨中承式钢箱异形拱桥(2×57.5 m)为工程背景,采用Midas Civil进行有限元建模分析,介绍了桥梁荷载试验的工况布置与测试内容,通过对比分析现场实测数据与理论计算结果,对桥梁结构在试验荷载作用下的受力性能与工作状态进行分析评估。验证了该桥在试验荷载作用下的结构校验系数、相对残余数值及动力特性参数均满足规范要求,表明该桥成桥受力性能良好,可为同类异型拱桥开展荷载试验检测评估工作提供参考借鉴。This paper takes a two span half through steel box shaped arch bridge(2×57.5m)as the engineering background,the Midas civil is used for the finite element modeling analysis,and the bridge load test scheme is drawn up.The working condition layout and test contents of bridge load test are introduced.By comparing and analyzing the field measured data and theoretical calculation results,the mechanical performance and working state of the bridge structure under the test load are analyzed and evaluated.It is proved that the structural calibration coefficient,relative residual value and dynamic characteristic parameters of the bridge meet the requirements of the code.It shows that the actual mechanical performance of the bridge is good,which can provide reference for similar bridges to carry out load test,detection and evaluation.

关 键 词：中承式钢箱拱桥 有限元 荷载试验 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]