麻竹高速某高填石路堤施工期沉降及稳定性计算分析  

Computational Analysis of Settlement and Stability of a High Rockfill Embankment in Construction Period of Ma-Zhu High Way

作　　者：杨波 汪斌[2] 朱杰兵[2] 李聪[2] 

机构地区：[1]湖北交投襄随高速公路建设指挥部,宜城441400 [2]长江科学院水利部岩土力学与工程重点实验室,武汉430010

出　　处：《交通科技》2016年第1期79-82,共4页Transportation Science & Technology

基　　金：国家自然科学基金项目(51209020;41272350;51379022)资助

摘　　要：填石高路堤的沉降和稳定性一直是山区高速公路建设中急需解决的关键问题之一。文中对麻竹高速公路某填石高路堤施工期的沉降、侧向位移及稳定性进行了数值模拟计算,研究表明,该填石高路堤施工期最大沉降量为250mm,最大沉降部位位于该59m路堤高度的58%处,稳定性分析结果表明,该路堤边坡整体稳定性较好,正常工况下稳定性系数达到2.21;工后相当一段时间内沉降量较小。通过施工期累计沉降监测数据与数值模拟结果对比,表明监测值要比理论计算值小,并给出了原因分析。The embankment settlement and stability is one of the most important issues needed to be resolved during highway construction in mountainous area.The horizontal displacement and vertical settlement are simulated with FEM method during the progress of the high rockfill embankment.And the stability of whole embankment is analyzed based on the limit equilibrium method.Research shows that the maximum value of settlement is 250 mm,in which located 58% height of this embankment.The calculated minimum factor of stability is 2.21 and it has good stability.By contrast with monitoring settlement during construction,it is found that the former value is much less than the calculated one and the reasons for the difference are accounted in this paper.

关 键 词：填石高路堤 沉降监测 最大沉降量 稳定性分析 

分 类 号：U416.12[交通运输工程—道路与铁道工程]