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文章介绍了锡航刚架拱桥的病害分析和加固设计方案。危旧刚架拱片桥内力分析比较复杂,为准确了解旧刚架拱片桥的受力特征和对加固方案进行结构检算,采用结构分析程序Sap2000建立了该旧刚架拱片桥加固前、加固后的三维有限元模型,分析模型详细考虑了上部结构和拱之间的相互作用,进行了旧刚架拱片桥加固前、加固后的结构内力分析。计算分析结果表明:加固后各截面承载力满足规范要求。
This article introduces the disease analysis and reinforcement design scheme of Xijian rigid-frame arch bridge. In order to get an accurate understanding of the stress characteristics of the rigid frame arch bridge and the structural inspection of the reinforcement scheme, the internal force analysis of the old rigid frame arch bridge is complicated. The structural analysis program Sap2000 is used to establish the rigid frame arch bridge before strengthening , And the three-dimensional finite element model after reinforcement. The analysis model considers the interaction between the superstructure and the arch in detail and analyzes the structural internal forces before and after the reinforcement of the old rigid-frame arch bridge. The calculation and analysis results show that the bearing capacity of each section after the reinforcement meets the specification requirements.