基于FLAC^(3D)的煤矸石路堤沉降与应力分析与现场测试对比研究  

Coal Gangue Embankment Settlement and Stress Analysis Based on FLAC^(3D) and Comparative Study with Field Test Rsults

作　　者：孙锴 彭立[2] 杜勇立[2] 唐泉[3] 杨果林[3] 

机构地区：[1]中建五局土木工程有限公司,湖南长沙410004 [2]湖南省交通规划勘察设计院,湖南长沙410008 [3]中南大学土木工程学院,湖南长沙410075

出　　处：《公路工程》2014年第1期83-87,98,共6页Highway Engineering

基　　金：交通运输部科技项目(2010-353-343-290);湖南省交通科技项目(200908)

摘　　要：以湖南某高速公路煤矸石作填筑材料的施工路段DK127+720典型断面为工程背景,分析和模拟了三种不同压实度及3种不同填筑高度的煤矸石路堤的FLAC3D计算模型。计算了在不同压实度和填筑高度下路堤模型的竖向沉降、水平位移以及最大应力值,并对其变化规律进行了研究。根据不同的压实度和不同的填筑高度路堤模型的位移、应力值,分析得出了影响路堤模型的竖向沉降、水平位移以及最大应力变化的关键因素。以现场观测值为依据,对比了数值计算结果与实测结果,得出了两个结果之间的关系。Based analysis and simulation of three different degree of compaction as well as three different filling height of coal gangue FLAC3 D calculation model of highway construction section as a fill-ing material with gangue DK127 ＋720 typical sections focus on the next the embankment model of verti-cal height in the different degree of compaction and filling subsidence,horizontal displacement values as well as the maximum stress changes.Value of the reference field observations,comparing the differences of the numerical results with experimental results and a brief discussion of its causes;according to the different compaction and the settlement value of the filling height of embankment model,analyzed the im-pact of embankment model subsidence and stress change some of the key factors of its variation.

关 键 词：煤矸石 路堤 沉降 应力 

分 类 号：U414.1[交通运输工程—道路与铁道工程]