钢筋混凝土拱桥加固后静动力性能评定分析  

Analysis of statical and dynamical test of consolidated reinforced concrete arch bridge and its use in service period

作　　者：施洲[1] 蒲黔辉[1] 薛爱[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《四川建筑科学研究》2008年第3期79-82,共4页Sichuan Building Science

摘　　要：对实施加固工程后的国道108线某120 m跨钢筋混凝土拱桥实施静、动力荷载试验。静载试验中测试静载工况下的拱圈挠度、截面应力,试验分析结果表明,桥跨结构受力合理,具有良好的刚度与强度;在动载试验中,测试桥跨结构的自振特性,并进行了行车激振试验,分析桥跨结构在行车下的冲击作用。最后分析了该桥的静动载试验结果在桥梁运营后的损伤检测中的应用理论与方法。Statical and dynamical tests were done on one 120 m-span reinforced concrete arch bridge after consolidation on 108 national highway. The deflections and the stresses of the arch under statical loads were tested. The test results indicate that the structure is of enough stiffness and strength. The natural vibration of the structure was tested, and the impact of the passing vehicles was analyzed. And the uses of results of statical and dynamical tests in damage detection during the service period of the bridge were analyzed.

关 键 词：静载试验 动载试验 自振特性 冲击作用 

分 类 号：TU448.22[建筑科学—岩土工程]