连续刚构桥最大悬臂状态风致振动分析

Wind-Induced Vibration Analysis of Maximum Cantilever State for Continuous Rigid Frame Bridge

以某一高墩大跨连续刚构桥最不利状态即最大悬臂施工状态为例,建立有限元模型对结构进行动力特性分析,结合数值模拟手段,定量地分析了风致振动影响因素作用的程度,最后结合舒适度分析指标,分析了对施工人员的影响程度,为刚构桥设计以及施工提供了一定的参考价值。

Across ravines,parallel double bridge under wind load effects cannot be ignored,especially the largest cantilever construction status,the structure is sensitive to wind load,Thus wind load can control.Static load on the pier bottom put forward strict requirements for bending moment and torque of transverse bridge;Fluctuating wind affect the comfort of the construction personnel and the accuracy of folding of side span.The bridge site topography,geomorphic characteristics,we can’t change them,usually went up from structure measures to research on the variation of wind on structure.So this article embarks from the structure measures to study the wind load on its impact,so as to provide a beneficial reference for structure design.