某中墩为独柱的2孔连续钢箱梁匝道桥梁的抗倾覆分析与加固设计

Antidumping Analysis and Reinforcement Design of a Continuous Steel Box Girder Bridge Ramp of 2 Holes with the Single Column Middle Pier

车辆超载严重,钢箱梁自重轻,养护施工时的施工荷载分布不对称等,都是造成设置独柱墩的匝道桥梁倾覆的不利因素。本文通过对某中墩为独柱的2孔连续钢箱梁匝道桥梁在桥面养护过程中发生的相关问题的分析,提出一种加固设计方法,为该类桥梁的类似病害处治提供一些新的思路和启发。

The vehicle overloading, light weight of steel box girder, construction load distribution asymmetry in maintena-nce and construction, are caused unfavorable factors set the si-ngle column pier ramp bridge col apse. In this paper, through the analysis of the related problems of the continuous steel box girder bridge deck ramp of a single column pier 2 holes in that occurs in the process, puts forward a kind of design method of strengthening, provides some new ideas and inspiration to deal with similar disease of the bridge.