连续独柱墩桥梁抗倾覆安全评价及加固设计方案研究

独柱墩桥梁占地面积少，结构美观，在城市立交桥和高速匝道等桥梁建设中得到广泛的运用。但是其横向稳定性在目前施工规范中缺乏相应的规定，桥梁使用过程中容易出现倾覆事故。文中分析了独柱墩桥梁横向失稳的原因，进行了结构验算，并根据验算结果提出增设钢管混凝土立柱或增设预应力盖梁2个加固设计方案。

Research on Reinforcement Design Scheme and Overturning Safety Evaluation of Continuous Single Column Pier Bridge

single column pier bridges cover an area of small and have beautiful structure, so they have been widely used in bridge city overpass and high-speed ramps construction. But in the absence of corresponding provisions for lateral stability in the current construction specifications, operation process prone to happen bridge collapse. Based on the analysis of the lateral instability reasons of the single column pier bridges, the structure calculation is carried out. According to the calculation results, two feasible design scheme are put forward which include the addition of concrete filled steel tube columns and prestressed beam.