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杭甬高速公路拓宽工程理论分析及监测
引用本文:贾宁,陈仁朋,陈云敏,徐立新,杨少华.杭甬高速公路拓宽工程理论分析及监测[J].岩土工程学报,2004,26(6):755-760.
作者姓名:贾宁  陈仁朋  陈云敏  徐立新  杨少华
作者单位:浙江大学岩土工程研究所;浙江省交通规划设计研究院;浙江省交通规划设计研究院 浙江杭州310027;浙江杭州310027;浙江杭州310028;
基金项目:国家自然科学基金资助项目(50308026),交通部深厚软基高速公路拓宽工程关键技术试验研究
摘    要:软土地基上高速公路的拓宽建设是高速公路工程中的重要课题。本文以杭甬高速公路拓宽为背景,分析了拓宽路堤附加应力对老路堤的影响,基于摩尔–库仑模型,研究了老路堤和拓宽路堤的沉降变形规律,并与实测结果作了对比。拓宽路堤作用下,新老路堤将产生不均匀沉降,路面产生拉应力。拓宽路堤路面铺设时间应以新老路堤工后差异沉降大小为控制标准。

关 键 词:道路工程  道路拓宽  数值分析  软土地基  高速公路  
文章编号:1000-4548(2004)06-0755-06

Theoretical analysis and measurement for widening project of Hang-Yong Expressway
JIA Ning,CHEN Renpeng,CHEN Yunmin,XU Lixin,YANG Shaohua.Theoretical analysis and measurement for widening project of Hang-Yong Expressway[J].Chinese Journal of Geotechnical Engineering,2004,26(6):755-760.
Authors:JIA Ning  CHEN Renpeng  CHEN Yunmin  XU Lixin  YANG Shaohua
Affiliation:1. Zhejiang University, Hangzhou 310027, China; 2. Zhejiang Provincial Planning Design and Research Institute of Communications, Hangzhou 310028, China
Abstract:To widen the expressway built on soft soil is an important subject in expressway construction engineering. Taking the widening project of Hang-Yong Expressway as background, the influence of additional stress in the foundation generated by the new embankment is analyzed. Based on Mohr-Coulomb model, regularity of settlement and deformation of old and new embankments are analyzed and compared with the measured data. Tension occurs in pavement due to the non-uniform settlement of the new and old embankments. Time for pavement can be determined by post construction differential settlement.
Keywords:road engineering  road-widening  numerical method  soft soil  expressway
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