摘要
基于兰永一级高速公路典型高填方路基工程,采用FLAC3D有限差分软件建立相应的路基二维模型,用摩尔-库仑塑性本构模型计算高填方路基在不同高度、不同坡度、不同填料位移变形,并记录所设置关键点处的水平位移与沉降量,得到填方高度、填方材料是影响高填方路基施工过程以及工后沉降的主要因素。在工程实际填筑过程中,每填筑3m高埋设单点沉降计监测其沉降量。通过对比分析实测数据与模拟节点沉降量,得到两者结果基本相符,最大误差不超过允许范围。为高填方路基的设计和施工提供一定的参考。
Based on Lan-yong Grade-A Highway high fill subgrade construction,two-dimensional model is established by using the FLAC3D finite difference software.By using Mohr Coulomb constitutive model to calculate high embankment deformation at different height and different slope and different filler displacement.The horizontal displacement and the settlement of key points are record to conclude the fill height and filling materials are the main factors affecting the high fill subgrade construction and post construction settlement.In the actual filling process,single point settlement gauge is buried every 3 meters to monitor the settlement.By comparing and analyzing the measured data and the simulation node settlement,the results are basically consistent and the maximum error is not more than the allowable range.Provide a reference for the design and construction of high fill subgrade.
作者
蔡文霄
陈杰
朱彦鹏
CAI Wenxiao;CHEN Jie;ZHU Yanpeng(Lizhou Audit Center of Investment in Fixed Assets,Sichuan Guangyuan 628000,China;Western Engi.Research Center of Disaster Mitigation in Civil Engi.of Ministry of Education,Lanzhou Univ.of Technology,Lanzhou 730050,China)
出处
《低温建筑技术》
2018年第6期90-94,共5页
Low Temperature Architecture Technology
基金
教育部长江学者创新团队支持计划项目(2013IRT13068)
甘肃省科技重大专项计划项目(1302FKDA030)
关键词
高填方路基
沉降变形
数值模拟
现场监测
high embankment
settlement deformationr
numerical simulation
site monitoring
