软土路基超载设计与卸载时机的确定  

Overload Design and Unload Time Determination of Soft Soil Foundation for Highways

作　　者：陈道志 陈东升[2] 

机构地区：[1]广东省高速公路有限公司,广东广州510100 [2]长沙理工大学,湖南长沙410076

出　　处：《中南公路工程》2004年第1期66-69,共4页Central South Highway Engineering

摘　　要：预压是最常用的软土地基处治方法。在工期较短,预压时间受到限制时,可采取超载预压的方法加快预压期的沉降量。根据广东省阳茂高速公路软基实况及基于沉降监测资料的分析,进行软土地基超载设计并推算相应的超载厚度,同时探讨了卸载时机的确定方法,确保预压期内地基应完成的沉降量和预压期末地基的固结度满足设计要求。Pre-compression is the most common method for treating soft soil foundation. When the con?struction time is limited, overloading is an effective approach to accelerate the residual settlement during pre?compression. Based on the analysis of residual settlement data in soft soil foundation on Yangjiang-Maoming Highway in Guangdong Province, overload design and thickness of soft soil foundation are discussed. In addit?ion, a method for determining unload time is introduced to meet the requirements of residual settlement during pre-compression and consolidation degree at the end of pre-compression.

关 键 词：软土路基 超载设计 卸载时机 预压 高速公路 确定方法 

分 类 号：U416.1[交通运输工程—道路与铁道工程]