青海湖典型水草地路基变形控制方法研究  

Control Method of Lateral Deformation of Subgrade in Typical Water Grassland in Qinghai Lake

作　　者：张蕾[1] 谭家科 廖燚 闫吉祥 ZHANG Lei;TAN Jiake;LIAO Yi;YAN Jixiang(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming,Yunnan 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《施工技术（中英文）》2022年第24期65-70,共6页Construction Technology

基　　金：青海省科技成果转化专项项目(2021-SF-168)。

摘　　要：以青海湖西岸某公路地基侧向变形问题为研究背景,以青海湖西岸典型不良地基土即水草地为研究对象,通过室内模型试验结合有限元数值模拟计算的方法,分析地基土竖向、水平变形及剪切应力等变形规律,研究碎石桩复合地基加固水草地路基的侧向变形的控制问题。研究结果表明,碎石桩复合地基能有效限制水草地软土路基的侧向变形和竖向沉降,通过调整碎石桩的布置形式,可起到技术性及经济性并行的作用。This paper takes the lateral deformation of the foundation of a highway on the west bank of Qinghai Lake as the research background, taking the typical unfavorable foundation soil on the west bank of Qinghai Lake, namely water grassland, as the research object, the method of indoor model test combined with finite element numerical simulation calculation, analyzes the vertical and horizontal deformation, shear stress and other deformation laws of foundation soil, studies on the control of lateral deformation of gravel pile composite foundation to reinforce water and grass subgrade.The research results show that the gravel pile composite foundation can effectively limit the lateral deformation and vertical settlement of the soft soil subgrade in water grassland. By adjusting the layout of the gravel pile, it can play a role in both technical and economical aspects.

关 键 词：道路工程 水草地 路基 变形 碎石桩 模型试验 数值模拟 

分 类 号：U416.1[交通运输工程—道路与铁道工程]