连续梁桥的抗倾覆稳定性及加固方案研究

Research on Anti Overturning Stability and Reinforcement Scheme of Continuous Beam Bridge

为了提升连续梁桥的设计水平,总结了连续梁桥的倾覆机理和倾覆影响因素,分析了规范法计算连续梁桥的抗倾覆稳定性存在的问题。同时,以某高速公路上的预应力混凝土连续箱梁桥为研究对象,利用MIDAS/Civil软件建立计算模型,分析了曲率半径和支承方式对其抗倾覆安全系数的影响,并提出了多个加固方案来改善连续梁桥的抗倾覆稳定性。

In order to improve the design level of continuous beam bridges,the overturning mechanism and influencing factors of continuous beam bridges were summarized,and the problems in calculating the anti overturning stability of continuous beam bridges using the standard method were analyzed.At the same time,taking a prestressed concrete continuous box girder bridge on a certain highway as the research object,a calculation model was established using MIDAS/Civil software to analyze the influence of curvature radius and support method on its anti overturning safety factor.Multiple reinforcement schemes were proposed to improve the anti overturning stability of the continuous girder bridge.