基于正负摩阻力影响的CFG桩复合地基沉降分析

摘要

The subgrade of granular material is the most fragile and unsteady one in the whole circuit, which is the main reason for the track distortion. It is commonly believed that the CFG pile composite foundation can effectively control this kind of track distortion. Considering the influence of the positive and negative friction on the CFG pile composite foundation, we have invented a formula for the sedimentation of it. This paper aims to test its propriety and feasibility through the comparative analysis between the calculative values of actual projects and the monitoring data at the scene, in order to provide some references for the project design and calculation.%　　由散体材料组成的路基是整个线路结构中最薄弱、最不稳定的环节,是轨道变形的主要原因,CFG桩复合地基是有效控制路基变形的主要手段之一。考虑正负摩阻力对 CFG 桩复合地基的影响,推导出一种新型的CFG 桩复合地基沉降计算方式,通过对实际工程的计算值与现场监测数据的对比分析,验证了该计算式的合理性与可行性,为工程设计与计算提供参考。