摘要
横梁在组合梁桥中起到增强结构整体性、调节荷载横向分配的作用,针对某连续组合梁桥横梁裂缝宽度超限、承载力不足的问题,提出增加桥梁调高支座和预应力钢束的横梁加固方案,并介绍了横梁加固施工的实施过程,阐述了混凝土植筋、增设预应力钢束、桥梁调高支座安装等横梁加固施工关键技术要点。横梁加固表明,加固方案有效,解决了横梁存在的问题。
Cross girder has a important role in distributing lateral loads and improves mechanical properties in continuous composite girder bridges. Based on the crack width transfinite and strength shortage of the cross girder,the cross girder strengthening scheme with adjusting high supports and prestressed tendons,and the strengthening process and key construction technologies are introduced in detail. The strengthening results show that this strengthening technology is effective,and the problems of cross girder are resolved.
出处
《施工技术》
CAS
北大核心
2014年第4期17-19,共3页
Construction Technology
基金
国家自然科学基金项目(50078014)
常州工学院校级科研基金项目(YN1314)
关键词
桥梁工程
加固
组合梁
波形钢腹板
施工技术
bridges
strengthening
composite girder
corrugated steel webs
construction
