公路路基填土沉降特性分析  

Analysis of Settlement Characteristics of Compacted Fill of Road Foundation

作　　者：付巍[1] 张冬青[2] 李淼[1] 

机构地区：[1]吉林大学建设工程学院,长春130026 [2]吉林省交通厅,长春130026

出　　处：《世界地质》2003年第3期294-297,共4页World Geology

摘　　要：综合运用土力学和土质学的基本原理,通过对拉林河至长春高速公路沿线五种比较典型的压实填土沉降特性的研究,对每种土样分别在不同密实度、分级荷载应力作用下进行压缩试验,掌握其沉降变形特性。研究表明,公路路基压实性主要受填土的颗粒级配、形状及最大干密度的影响,且压实不足是路堤沉降的主要原因。经工程实际观察表明试验数据的分析结果与实践相吻合。对压实填土在工程应用时的控制标准提出了建议。Based on a series of compression tests under different compactness and stress conditions on five representative soil samples from Lalin River-Changchun expressway, the authors have found the settlement characteristics of compacted fill of road foundation. The compactness of road foundation is mainly influenced by grain gradation, shape and maximum dry density (ρdmax) of the soil. The settlement of road foundation is pri marily caused by inadequate compactness. The experimental data coincide with those of practical project. Some suggestions about the controlling standard of the compacted fill are proposed.

关 键 词：公路路基 压实填土 沉降特性 

分 类 号：P642.1[天文地球—工程地质学]