摘要
介绍了某预应力混凝土连续箱梁桥的病害情况及加固处理措施。建立桥梁的有限元模型,并依据现行规范对加固效果进行评价;通过静载试验,确定控制截面的应变分布和挠度变形值,评估桥梁的整体刚度和工作性能。结果表明,加固后的桥梁处于弹性工作状态,加固措施对该桥的结构承载力极限状态和正常使用极限状态均有改善。
This paper introduced the deterioration condition and strengthening measures of a prestressed concrete continuous box girder bridge. Finite element model of the bridge was built and condition was assessed according to current codes. Strain and deflection were measured through loading test to assess the stiffness in-service and the workability capacity of the strengthened bridge. The results indicate that the strengthened effect of the bridge is improved at workability limit state and serviceability limit state.
出处
《施工技术》
CAS
北大核心
2014年第4期20-23,共4页
Construction Technology
基金
广东省教育部产学研结合项目(2010B090400133)
关键词
桥梁工程
加固
箱梁桥
有限元分析
静载试验
bridges
strengthening
box girder bridge
finite element analysis
load testing
