预应力混凝土连续刚构桥底板崩裂问题研究

Research on Bursting Crack in Bottom Slab Problem of Continuous Prestressed Concrete Rigid Frame Bridge

预应力混凝土连续刚构桥的底板崩裂问题是现在梁式桥中存在的主要问题之一。文中通过对国内某高速公路中A大桥底板崩裂问题的分析,研究引起底板崩裂的主要原因,并给出相应的预防措施及建议,为国内同类桥梁相关问题的处理等提供参考。

Bursting crack in bottom slab of continuous prestressed concrete rigid frame bridge is one of the most important problems of beam bridge nowadays. By analyzing the accident of bursting crack in bottom slab of some bridge on a domestic expressway, a thorough research on reasons for this problem is made, and corresponding preventive measures and suggestion have been proposed in the article. This article also provides a good reference for handling the relevant problems of similar domestic bridges.