混凝土简支箱梁桥墩横向刚度分析  

Analysis on Lateral Rigidity of Concrete Simply-supported Box Girder Bridge Pier

作　　者：姜晓勇 JIANG Xiaoyong(Guangzhou Branch of China Railway Shanghai Design Institute Group Co.,Ltd.,Guangzhou 510000,Guangdong,China)

机构地区：[1]中铁上海设计院集团有限公司广州分院,广东广州510000

出　　处：《工程技术研究》2023年第4期12-14,共3页Engineering and Technological Research

基　　金：中铁上海设计院集团有限公司科技研究开发项目(集22-59)。

摘　　要：随着我国城市交通基础设施建设规模的不断扩大和建设速度的持续提升,混凝土简支曲线箱梁在城市公路网中得到了大规模应用。混凝土简支箱梁作为衔接城市公路交通的重要结构,不仅可以提升立交枢纽的美观性,还能有效改善局部交通堵塞情况。然而,混凝土简支箱梁桥的长时间使用会使其桥墩横向刚度受到不同程度的损伤,造成桥梁过大的横向位移,引发桥梁倾覆等安全事故。文章依托广东省某公路混凝土简支曲线箱梁桥,采取Midas/Civil有限元软件分别分析模型的上下部结构,研究桥墩横向刚度对梁桥位移影响,包括桥墩支反力和墩顶位移,以便为相关工程建设提供理论参考。With the continuous expansion of China's urban traffic infrastructure construction scale and the continuous improvement of construction speed,concrete simply-supported curved box girder has been widely used in urban highway network.As an important structure connecting urban highway traffic,concrete simply-supported box girder can not only improve the aesthetics of the interchange hub,but also effectively improve local traffic congestion.However,the long-term use of concrete simply-supported box girder bridges will damage the lateral rigidity of piers to varying degrees,resulting in excessive lateral displacement of bridges and causing safety accidents such as bridge overturning.Based on a highway concrete simply-supported curved box girder bridge in Guangdong Province,this paper adopts Midas/Civil finite element software to analyze the upper and lower structures of the model respectively,

关 键 词：简支曲线箱梁 横向刚度 桥墩支反力 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]