公路桥涵台背处即路桥过渡区段路基由于沉陷而导致跳车是高等级公路中常见的一种病害。造成这样的病害,主要是填筑施工的技术质量问题所引起。本文在简略分析了桥、涵台背处路基沉陷的原因后,对路桥过渡区段的填筑施工要点泄水设置、材料选择了介绍。 Highway bridges and culverts at the back of the road and bridge transition section of the subgrade as a result of subsidence is a high-grade highway jumping is a common disease. Caused by such diseases, mainly due to the technical quality of filling construction caused. After a brief analysis of the reasons for the subsidence of the subgrade at the bridge and culverts, this paper introduces the key points of the drainage construction and the material selection for the construction of road and bridge transition section.