某多跨空腹式石拱桥承载能力检测评定

The inspection and evaluation of load- bearing capacity of a multiple- span open spandrel stone arch bridge

本文介绍了某多跨空腹式石拱桥的缺损状况检查、几何状态参数检查、荷载试验检测,并基于检测结果,应用有限元软件MIDAS/Civil建立了考虑连拱效应的有限元模型,引入承载能力检算系数及截面折减系数,对桥梁进行结构内力分析与承载能力检算,评定了桥梁的整体技术状况及承载能力。相关结论为该桥梁维养提供科学依据,且评定过程与方法可供类似鉴定工程参考。

In this article,bridge defect status inspection, geometry parameters inspection and load testing of bridge on a multiple - span open spandrel stone arch bridge were introduced. Finite element analysis software MIDAS/Civil was used to establish a finite element anal- ysis model by considering the effect of arch. We also have carried out bridge structure internal force analysis and bridge load - bearing ca- pacity calculating by considering comprehensive modification coefficient of bridge load - bearing capacity and section - reduction coefficient, and have evaluated the bridge load - bearing capacity. We provide the basis for bridge maintenance through the relevant conclusions and the evaluation process and method for identification of similar project reference.