灞河大桥检测评定与加固设计研究  

Study on Detecting Assessment and Strengthening Design of Bahe Bridge

作　　者：岳振民[1] 杨敏[1] 常丁[1] 

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710075

出　　处：《施工技术》2016年第5期52-55,共4页Construction Technology

摘　　要：随着我国交通行业的迅速发展,公路桥梁负荷日益加重,许多旧桥均存在承载力不足,出现老化、破损等现象,桥梁加固设计已经成为近些年的热点问题。以沪陕高速公路西蓝段灞河大桥为工程背景,对该桥进行了评估计算以及现场勘察检测。评估计算结果表明,该桥部分梁段承载力不足;检测结果显示梁体腹板、底板处存在较多裂缝等病害。针对上述问题,对该桥采用封闭或灌注裂缝,并粘贴钢板等加固方法,使该桥达到设计荷载要求,并具有一定的安全储备。With the rapid development of China ＇s transportation industry,the highway bridge load is increasing. Many old bridges are suffering from deficient carrying capacity. And many old bridges have aging,damage or other phenomenon. Therefore,the bridge strengthening design has become a hot topic in recent years. Taking Bahe Bridge of Shanghai-Shaanxi expressway as the engineering background in this paper,this bridge was researched by evaluation calculation and field detection. The result of evaluation calculation indicates that parts of the girders are suffering from deficient carrying capacity. The bridge detection result shows that there are many cracks on the web and bottom plate of box girder. In order to solve these problems,the cracks are sealed or perfused,and after that,the steel plates are bonded onto the girder. Through these operations,Bahe Bridge should meet the requirement of the design load,and has a certain safety margin.

关 键 词：桥梁工程 加固 检测 裂缝处理 有限元分析 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]