软土地区大面积堆载对邻近高架桥墩的影响分析研究

Analysis and Study on Impact of Large-area Heaped Load on Adjacent Viaduct Piers in Soft Soil Area

摘要:

结合杭州某高速公路桥梁周边景观地形堆载项目，采用数值有限元方法，对大面积堆载引起的桥墩变形进行研究。考虑有效应力和超孔隙水压力，分析了堆载高度、堆载坡率、堆载与既有桥墩距离的相关因素，依据设计规范对桩基位移控制标准，确定了合适的堆载高度和堆载距离，可为类似工程提供相关经验。

Abstract:

Combined with the heaped load project of landscape terrain around an expressway bridge in Hangzhou, the numerical finite element method is used to study the deformation of piers caused by the large-area heaped load. Considering the effective stress and excess pore water pressure, the factors related to the height of heaped load, the slope rate of heaped load, and the distance between the heaped load and the existing pier are analyzed. The appropriate height and distance of the heaped load are determined according to the control standard of the pile foundation displacement in the design code, which can provide the relevant experience for the similar projects.