苏瓦纳米机场轻轨工程高架桥梁桩基受冲刷的影响分析  

An Analysis of the Effect of Washing on the Pile Foundation for the Viaduct of the Light-Rail Project of the Suwanamy Airport

作　　者：王磊[1] 

机构地区：[1]中铁十八局集团有限公司海外区域指挥部,天津300222

出　　处：《国防交通工程与技术》2017年第4期38-41,共4页Traffic Engineering and Technology for National Defence

摘　　要：水流冲刷是造成桥梁毁坏的重要原因之一。以苏瓦纳米机场轻轨工程高架桥梁桩基为例,建立了桥墩局部冲刷形态模型,分析了桩基变形、桩身轴力及桩侧摩阻力受冲刷的影响,同时分析了受不均匀冲刷时桥梁桩基性能的变化。计算结果表明:局部冲刷对桥梁有严重影响且会影响到其他桩基,上游桩基受冲刷造成的地表变形对下游桩基有一定的影响;得到桩身轴力及摩阻力所受冲刷影响范围及峰值所在位置。可以为工程设计提供参考。Washing is one of the important causes for the destruction of bridges. With the pile foundation for the viaduct of the light-rail project of the Suwanamy Bridge as a practical example,a model for the local washing pattern of the pier is established in the paper ,wi th the deformation of the pile foundation,and the effects of washing on the axial force of the pile body and the pile-side frictional resistance analyzed. Meanwhile,the change in the performance of the pile foundation of the bridge caused by the uneven washing is analyzed as well. The calculated result shows that local washing seriously affects the bridge and also affects other pile foundation. The washing-caused ground deformation of the upstream pile foundation has also certain effects on the downstream pile foundations. Through the numerical simulation,the washing-affected range and the location of the peak values of the axial force of the pile body and the frictional resistance are obtained. The paper may serve as a useful reference for the design of other projects.

关 键 词：桩基 冲刷 数值模拟 变形 轴力 桩侧摩阻力 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]