高速公路桩承式加筋路堤沉降规律数值分析

本文采用有限元数值模拟,研究桩长、桩间距、桩帽宽度和路堤高度对桩承式加筋路堤沉降变形的影响.分析对比路基中心处、中心线右侧和路肩处,固区、下卧层沉降特点.研究结果表明:增加桩长、桩帽宽度和减小桩间距、路堤高度都能有效降低路基沉降.从沉降位置上分析,桩长变化,主要影响下卧层沉降.桩间距变化,主要影响加固区沉降.桩帽宽度变...

Numerical Analysis of Settlement Law of Pile-supported Reinforced Embankment on Expressway

In this paper,the influence of pile length,pile spacing,pile cap width and embankment height on settlement deformation of pile-supported reinforced embankment is studied by finite element numerical simulation.Analyze and compare the settlement characteristics of the subgrade center,the right side of the central line and the shoulder,the solid area and the underlying layer.the results showed:Increasing pile length,pile cap width,reducing pile spacing and embankment height can effectively reduce subgrade settlement.From the settlement position analysis,pile length changes,mainly affecting the settlement of the underlying layer.The change of pile spacing mainly affects the settlement of reinforcement area.The change of pile cap width mainly affects the settlement of reinforcement area.Embankment height changes,mainly affecting the settlement of the underlying layer.