新民岷江特大桥静动载试验研究  

Research on Static and Dynamic Load Test of Xinmin Minjiang River Bridge

作　　者：田志勇[1] 刘康[1] 蒲黔辉[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：《公路工程》2012年第4期135-137,230,共4页Highway Engineering

摘　　要：采用等效荷载加载试验模拟大跨度连续钢构桥在最不利荷载作用下的工作状态,测试并分析各静载工况下的主梁挠度、主梁与主墩控制截面应力,判断实际承载能力,评价其在设计使用荷载下的工作性能。通过动力试验了解桥跨结构的自振特性及其在长期使用荷载作用下的动力性能,分析桥跨结构在行车下的冲击作用,预测桥梁运营状况,为桥梁维修、管理提供技术依据。Using the equivalent load loading test to simulate the working conditions of longspan continuous rigid frame bridge in the condition of greatest loads. The actual load-carrying capacity and perfoemance capabilities in the design using load can be eatimated according to test and analyze girder deflection and the control sectional stress between main girder and main pier under static load. The natural vibration characteristics of the bridge superstructure and the dynamic performance in the long-term service load can be realized according to dynamic loading test. And the impact action of bridge span structure under traveling crane can be analyzled. The bridge operation congdition can be forecasted and it can provide technical basis for the bridge maintenance and management.

关 键 词：连续刚构桥 静载试验 动载试验 承载能力 自振特性 冲击作用 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]