曲线箱梁桥支座布置对倾覆稳定性能的影响

Influence of Support Layout of Curved Box Girder Bridge on Overturn Stability

近年来,随着城市建设和交通事业的快速发展,汽车超载现象日趋严重,各地相继发生了多起箱梁桥倾覆失稳直至垮塌的事故,造成了严重的社会影响。现结合工程实例,通过有限元分析,根据最新规范对桥梁抗倾覆验算的要求,研究了曲线箱梁桥支座布置对倾覆稳定性能的影响,并根据分析结果,提出了几点关于曲线箱梁桥抗倾覆稳定的建议。其成果具有一定的参考价值。

In recent years,with the rapid development of urban construction and transportation industry,the overloading of cars is becoming more and more serious.There are many cases of box girder bridge overturning,instability and collapse occurred in the different places,which have had a serious social impact.Combined with an engineering example,through the finite element analysis and based on the requirements of the latest standards for the anti-overturning check calculation of bridge,the influence of support layout of curved box girder bridge on the overturning stability is studied.Based on the analysis result,several suggestions on the anti-overturning stability of curved box girder bridge are proposed.The results have a certain reference value.