T构桥梁病害分析及加固研究

摘要

T构桥梁由于施工与成桥受力状态一致，受力简单，在我国曾大量修建。但也存在悬臂挠度大，设计不当容易引起桥墩开裂等病害。文中结合某T构桥梁出现的病害，对T构箱梁及桥墩进行了详细计算分析，对桥墩开裂采取了增大截面并施加竖向预应力的加固措施，可为其他类似工程的加固提供参考。%Because of the simple stress, T-shaped rigid-framed bridges exist at a large number in our country. But there are some problems in these bridges, including large deflection in cantilever and cracking disease in the pier caused by improper design. This paper, aiming to solve the diseases on T-shaped rigid-framed bridge, made some de-tailed calculation and took some reinforcement measures by increasing the cross sections and applying the vertical prestress on the cracking pier, which shall provide some references for similar engineering reinforcement projects.