软弱岩土挖方段公路路基换填深度研究  

Research on the Replacement Depth of Highway Subgrade for Soft Rock-soil Excavation

作　　者：张静波[1] 陈兴[1] 吕岩松 杨露 詹永祥[3] ZHANG Jing-bo CHEN Xing LYU Yan-song YANG Lu ZHAN Yong-xiang(CCCC Second Highway Consultants Co. Ltd. , Wuhan 430055, China Guizhou Expressway Group Co. Ltd. , Guiyang 550004, China Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉市430056 [2]贵州高速公路集团有限公司,贵阳市550004 [3]中国科学院武汉岩土力学研究所,武汉市430071

出　　处：《公路》2017年第7期39-42,共4页Highway

基　　金：贵州省交通运输厅科技项目;项目编号2014-122-007

摘　　要：软弱岩土挖方段路基换填深度一直是业内备受关注且未能较好解决的一个问题。文中基于路基路面协同设计的思想,结合贵州省高速公路所惯用的典型沥青路面结构,采用动变形控制方法对重交通条件下软弱岩土挖方段路基适宜换填深度展开研究,给出了软弱岩土挖方路基强度与换填深度之间的对应关系。研究成果可供路面结构和交通荷载相近的省份设计参考。The replacement depth of highway subgrade for soft rock-soil excavation has been a problem that has been concerned and failed to solve successfully. In this paper based on the idea of collaborative design of subgrade and pavement, combining with the typical asphalt pavement structure of expressways in Guizhou Province, the dynamic deformation control method has been used to study the suitable replacement depth of highway subgrade for soft rock-soil excavation under heavy traffic conditions, and the correspondence between the replacement depth and strength of subgrade for soft rocksoil excavation is put forward. The research results can provide reference for the provinces with similar pavement structure and traffic load.

关 键 词：路基 软弱岩土 动变形 回弹模量 换填深度 

分 类 号：U416.1[交通运输工程—道路与铁道工程]