桥墩类型对曲线连续刚构桥结构性能影响研究  

Study on the influence of pier types on the structural performance of curved continuous rigid frame bridges

作　　者：刘腾龙 孔君 李震 许梦旗 尹俊红[2] Liu Tenglong;Kong Jun;Li Zhen;Xu Mengqi;Yin Junhong(China Metallurgical Engineering Science and Technology Co.,Ltd.,Beijing 100176,China;School of Civil Engineering and Architecture,Henan University,Kaifeng Henan 475004,China)

机构地区：[1]中冶京诚工程技术有限公司,北京100176 [2]河南大学土木建筑学院,河南开封475004

出　　处：《山西建筑》2023年第22期174-176,共3页Shanxi Architecture

基　　金：河南省科技攻关计划项目(172102210198);河南大学本科教学改革研究与实践项目(HDXJJG114)

摘　　要：为研究不同类型的桥墩对曲线连续刚构桥结构性能的影响,以某高速公路曲线连续刚构桥工程为研究对象,选取单肢空心薄壁和双肢空心薄壁墩身结构,建立空间有限元模型,对其稳定性和地震波双向激励下的抗震性能进行研究。结果表明:曲率半径的改变对该桥梁的稳定性无显著影响。最大悬臂施工阶段和成桥阶段,单肢空心薄壁墩的稳定性优于双肢空心薄壁墩,双肢空心薄壁墩较单肢墩有更好的抗侧倾能力。双肢空心薄壁墩抗震性能由于单肢空心薄壁墩,且在地震波双向激励下,双肢空心薄壁墩的墩轴力需求增加。In order to study the influence of different types of piers on the structural performance of curve-continuous rigid frame bridge,a curve-continuous rigid frame bridge project of an expressway was selected as the research object,and a spatial finite element model was established to study its stability and seismic performance under the bi-directional excitation of seismic waves.The results show that the change of curvature radius has no significant effect on the stability of the bridge.The stability of single-leg hollow thin-wall pier is better than that of double-leg hollow thin-wall pier in maximum cantilever stage and bridge formation stage.The double-limb hollow thin-wall pier has better anti-overturning ability than the single-limb hollow thin-wall pier,and the seismic performance of the double-limb hollow thin-wall pier increases because of the single-limb hollow thin-wall pier and the bi-directional excitation of seismic waves.

关 键 词：曲线连续刚构桥 单肢薄壁墩 双肢薄壁墩 稳定性 地震响应 

分 类 号：TU312.1[建筑科学—结构工程]