某高速匝道独柱墩连续箱梁桥横向抗倾覆稳定性分析  

Analysis on the Horizontal Stability of a Single Column Pier Continuous Box Girder Bridge on an Expressway

作　　者：李文杰 

机构地区：[1]广东省公路建设有限公司,广东广州510000

出　　处：《水利与建筑工程学报》2016年第4期226-229,共4页Journal of Water Resources and Architectural Engineering

摘　　要：针对独柱墩连续箱梁桥在汽车超载或偏载作用下横向易失稳的问题,总结了横向失稳坍塌的过程,分析了其失稳机理,然后阐述了独柱墩桥横向失稳的判别准则和计算方法,并对某高速匝道独柱墩连续箱梁桥进行分析,验算了其横向倾覆安全系数、支座脱空和支座转角,验算结果表明其横向倾覆稳定性满足安全运营的要求。Focusing on the problem of horizontal stability of single column pier continuous box girder bridge subjected to vehicle overloading or eccentric loadings,the whole process of horizontal instability was summarized and the instability mechanism was analyzed. And then the screening criteria and the computing method was expounded. Integrating with a single column pier continuous box girder bridge on certain expressway,the lateral sensitivity stability coefficient and bearing separation and bearing angle was calculated,the check calculation shows that the horizontal stability can meet the bridge safety operation.

关 键 词：独柱墩连续箱梁 汽车超载 横向失稳 高速公路 

分 类 号：U45[建筑科学—桥梁与隧道工程]