云湛高速公路(新阳段)高路堤沉降变形规律研究  

Study on Settlement Deformation Laws of High Embankment of Yunzhan Expressway (Xinyang Section)

作　　者：刘志强 LIU Zhiqiang(Hunan Zhili Science and Technology Inc,Changsha 410205,China)

机构地区：[1]湖南致力工程科技有限公司

出　　处：《路基工程》2019年第5期127-131,共5页Subgrade Engineering

摘　　要：为研究高路堤沉降变形规律,采用水准测量及全站仪坐标测量的方法,对云湛高速公路(新阳段)高路堤顶沉降、坡脚水平位移及隆起量进行监测,绘制了总位移(累计沉降量)-时间曲线,结合项目概况、施工进度及控制标准,分析填土高度对累计沉降量-时间曲线的影响。结果表明:①坡脚水平位移及沉降量随着填土高度的升高,变形呈线性上升;间歇期变形速率放缓;填土完成后变形速率减小,逐渐趋于稳定;②路堤顶沉降变形过程分加速期、放缓期及基本稳定期三个阶段。In order to study the settlement deformation law of high embankment,the method of leveling and total station coordinate measurement is used to monitor the settlement of the high embankment,the horizontal displacement of the slope root and the amount of uplift of Yunzhan Expressway(Xinyang section).Then total displacement(accumulated settlemen t)-time curve was drawn.Combined with project overview,construction progress and control criteria,the influence of filling height on total displacement(accumulated settlement)-time curve was analyzed.There are conclusions as follows:①Horizontal displacement of slope foot and the settlement increases linearly with the increase of the filling height;Deformation rate slows down during the intermittent period;Deformation rate decreases and gradually stabilizes after the completion of the filling;②The settlement deformation process of the embankment includes three phases:acceleration period,slowdown period and basic stability period.

关 键 词：高速公路 高路堤 沉降观测 边坡稳定性观测 变形规律 

分 类 号：U416.1[交通运输工程—道路与铁道工程]