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汲取独柱墩单支座桥梁倾覆事故的教训,考虑超载车、重车对独柱墩单支座桥梁的影响,本文拟定三种工况汽车荷载的组合作用,通过施加最大偏心荷载,计算某互通独柱墩匝道桥在正常使用状态下的支座反力,对该互通桥梁在三种荷载工况下的抗倾覆性能进行验证,对三种荷载工况下的结果进行横向比较,得出了一定的分析结果,并提出加固办法;为以后的桥梁加固与设计提供可靠、详实的参考资料,对桥梁的安全运营提供有力保障。
In order to learn the lessons from single-seat bridge overturning accident and consider the influence of overloading vehicles and heavy vehicles on the single-column bridges with single-column piers, this paper formulates the combined action of three kinds of working vehicle loads. By applying the maximum eccentric load, The anti-overturning performance of the inter-bridge bridge under three load conditions was verified by the reciprocating reaction of the pedestal ramp bridge under the normal condition, and the horizontal comparison of the results under three load conditions was made A certain analysis result is put forward and the reinforcement method is put forward. It provides a reliable and detailed reference material for the future reinforcement and design of the bridge, which provides a strong guarantee for the safe operation of the bridge.