大跨度连续梁桥结构参数影响性分析

Influence Analysis of Structural Parameters of Long Span Continuous Beam Bridge

大跨径梁桥施工工序繁多,影响参数较多,而对施工参数的准确把握对最终合理的成桥状态也起着关键作用。以某大跨度连续铁路梁桥为例,借助有限元分析软件Midas/Civil建立该桥的计算模型,结合模型对施工控制中涉及的相关参数进行分析,并研究了不同的结构参数对成桥受力和变形的影响。按照各个参数对成桥状态的作用大小判别出主、次影响因素,并概括出规律,为今后同类型桥梁的设计和施工提供参考。

The long span girder bridge has many construction procedures and many influencing parameters,and the accurate grasp of construction parameters also plays a key role in the final reasonable bridge forming state.The author of a long span continuous railway bridge as an example,using finite element analysis software Midas/Civil to establish the calculation model of the bridge,combined with the model has carried on the analysis to the related parameters of construction control,and study the different structure parameters of stress and deformation of the impact on the bridge.According to the effect of each parameter on the condition of the completed bridge,the main and secondary influencing factors are identified,and the rules are summarized,which will provide some reference for the design and construction of the same type of bridge in the future.