拉林高等级公路路基土静力特性大型三轴试验研究

Large-scale Triaxial Test Study on the Static Characteristics of Roadbed Soil of Lasa-Nyingchi Railway Highway

本文选取拉林高等级公路工布江达县江达乡东南方向的砂卵石路堤土,简要介绍了该土样的基本物理参数指标,详细介绍了粗颗粒土动静三轴试验仪的各项参数指标以及试验步骤。最后,该土样分别在100、200、300kPa以及500kPa的围压下进行各组试验,并对其进行应力应变关系特征分析与强度特性分析。

In this paper,the sand-gravel embankment soil in the southeast direction of Jiangda Township,Gongbuji?angda County,Lasa-Nyingchi Highway was selected.The basic physical parameters of the soil sample were briefly in?troduced.The parameters and test steps of the dynamic and static triaxial tester for coarse-grained soil were intro?duced in detail.Finally,the soil samples were tested under confining pressures of 100,200,300kPa and 500kPa,and the stress-strain relationship and strength characteristics were analyzed.