薄壁墩连续梁桥静力学特性及静力稳定性分析  

Analysis on Static Characteristic and Static Stability of Continuous Beam Bridge with Thin-walled Pier

作　　者：谢晓辉 XIE Xiaohui(Guangdong Guanyue Highway&Bridge Co.,Ltd.,Guangzhou 511400,Guangdong,China)

机构地区：[1]广东冠粤路桥有限公司,广东广州511400

出　　处：《工程技术研究》2024年第18期106-108,共3页Engineering and Technological Research

摘　　要：文章以广东省深—汕西高速公路某双肢薄壁墩连续梁桥为例,通过Midas数值模型分析不同墩壁厚度对桥梁上部结构、墩身静力学特性及整体稳定性的影响,得出如下结论:墩身厚度对桥梁上部结构弯矩的影响顺序为边跨、主跨、左肢支点、右肢支点;墩身厚度显著影响墩顶和墩底弯矩,均随壁厚增加而增大,最大变化量出现在左肢墩底,为23.14%;墩壁厚度对整体稳定性影响不大,各工况下稳定安全系数均高于设计规范值。研究结果可为桥梁工程设计提供参考。Taking a continuous beam bridge with double-limb thin-walled piers on Shenzhen-Shantou West Expressway in Guangdong Province as an example,this paper analyzes the influence of different pier wall thicknesses on the bridge superstructure,pier body static characteristics and overall stability through Midas numerical model.The following conclusions are drawn:The order of influence of pier body thickness on the bending moment of the bridge superstructure is side span,main span,left limb fulcrum and right limb fulcrum.The thickness of the pier body significantly affects the bending moment of the pier top and the pier bottom,both of which increase with the increase of the wall thickness,and the maximum change occurs at the bottom of the left limb pier,which is 23.14%.The thickness of the pier wall has little influence on the overall stability,and the stability safety factor under each working condition is higher than the design specification value.The research results can provide reference for bridge engineering design.

关 键 词：桥梁工程 双肢薄壁墩 连续梁桥 静力分布 稳定性系数 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]