6度区连续刚构桥支座设计

An understanding of design of continuous rigid frame bridge in the 6 degree earthquake intensity zone

分析了地震烈度为6度区连续刚构桥不同边、中跨比及不同墩高时地震作用下产生的支座水平力,表明低烈度区地震作用产生的支座水平力仍然很大,如果按静力计算选择的支座型号在E2地震作用组合下支座很大程度上都会破坏,应引起桥梁设计师对类似桥梁设计支座选择的重视。

The horizontal force of the support produced under seismic action in different side-middle span ratio and different pier height for the continuous rigid frame bridge in the 6 degree earthquake intensity zone was analyzed, which indicates that the horizontal support force produced under seismic action in low earthquake intensity zone is still very big. If the support model is selected according to the static calculation,it will be damaged to a great extent under combined E2 seismic action, this should attract bridge designers＇ attention for similar bridge support selection, and the analysis in this paper can be of reference for the engineering design.