某多跨空腹式石拱桥承载能力检测评定

摘要

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 coeffi-cient, 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.