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。
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.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2004年第6期755-760,共6页
Chinese Journal of Geotechnical Engineering
基金
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
