小跨径实腹式石拱桥拱背加固减载法研究  

Reinforcement and Reducing Load on Extrados of the Small-Span Solid-Type Stone Arch Bridge

作　　者：高凯[1] 周建庭[1] 刘路[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2013年第S1期815-817,868,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市重大科技攻关项目(CSTC2005AA6010);交通运输部西部交通建设科技项目(200431878518)

摘　　要：从钢筋混凝土增大截面加固法和拱上减载法入手,论证了拱背加固减载法对小跨径实腹式石拱桥进行加固的可行性,并结合依托工程验证了拱背加固减载法在小跨径石拱桥上的应用,并分析了加固前后主拱圈的承载力,以及该加固法与其他加固方法在提高主拱圈承载力上的对比。Based on the method of enlarging section of reinforced concrete and reducing load on arches,the feasibility of the method of reinforcement and reducing load which was used to reinforce the small-span solid-type stone arch bridge was analyzed,and the application of the method on the small-span stone arch bridge in projects was also confirmed.Besides,the bearing capacity of the back arch rings was analyzed before and after reinforcement;meanwhile,this proposed reinforcement method was compared with other reinforcement methods in improving the bearing capacity of main arch rings.

关 键 词：小跨径 实腹式石拱桥 拱背 加固 减载法 增大截面法 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]