山区高填方路堤沉降预测方法  

Settlement Predicted Method of High Filled Embankment in Mountain Area

作　　者：肖衡林[1] 李丽华[1] 郭小川[1] 马强[1] 

机构地区：[1]湖北工业大学土木工程与建筑学院,岩土与地下工程研究所,湖北武汉430068

出　　处：《应用基础与工程科学学报》2015年第1期154-161,共8页Journal of Basic Science and Engineering

基　　金：教育部重点项目(2010133);教育部新世纪优秀人才支持计划(NCET-11-0962);国家自然科学基金项目(51178166;51308197)

摘　　要：高路堤沉降为中国现阶段公路建设面临的重要问题与难题之一.依托鄂西某山区高速公路高67m的填方路堤,采用分层沉降仪对该路堤工后沉降进行了监测,分析了山区高路堤的沉降规律.以实测沉降数据为基础,分别建立了时间对数、泊松曲线与指数沉降预测模型,并比较了3种预测模型与实测值的差别.结果表明,时间模型与泊松模型能较好地模拟实测数据.在此基础上,建立了时间对数-泊松联合预测路堤沉降模型.由此得出本路堤的沉降在工后2年内完成,工后1年的沉降量为104.2mm,总沉降量为122.4mm.The settlement of embankment is one of the most important problems during the construction stage at present in China.The settlement of the 67m high embankment in the west of Hubei Province was monitored using the layer monitoring instrument chronically.The rule of settlement about this embankment was analyzed. The time logarithm prediction model was crested based on the measured data.At the same time,the Poisson curve method and the index prediction model were used for predicting the settlement of this embankment. The difference of three methods was analyzed. The comparison results have shown that the time logarithm prediction mode and Poisson curve mode well suit the settlement rule of this embankment. At last,the time logarithm-Poisson combined prediction model was established. Some conclusions can be drawn that the settlement of this embankment is 104. 2mm in one year, and total settlement is 122. 4mm.

关 键 词：山区高速公路 路堤 沉降 时间对数-泊松联合预测模型 

分 类 号：U416.1[交通运输工程—道路与铁道工程]