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桩承式加筋路堤时效性数值模拟研究
引用本文:孙彦峰,骆瑞萍,陈保国.桩承式加筋路堤时效性数值模拟研究[J].探矿工程(岩土钻掘工程),2009,36(5):56-58,65.
作者姓名:孙彦峰  骆瑞萍  陈保国
作者单位:1. 河南省核工业地质局,河南,信阳,464000
2. 湖北省建筑科学研究设计院,湖北,武汉,430071
3. 中国地质大学《武汉》工程学院,湖北,武汉,430074
摘    要:利用有限元数值模拟方法研究了桩承式加筋路堤的时效性变化规律.通过无桩无筋、无桩加筋、竖向桩体及水平加筋联合使用3种情况对比研究,分析了路堤填土荷载作用下软土地基中超静孔隙水压力随时间的变化规律,探讨了路堤水平位移、沉降和工后沉降、筋材最大拉力及桩体荷载分担比随固结时间的变化规律.研究结论可为软土地基上路堤的设计和施工提供重要的参考.

关 键 词:路堤  时效性  数值模拟  超静孔隙水压力  工后沉降

Numerical Simulation on Time-dependent Behavior of Geo-synthetics Pile-supported Reinforced Embankment
SUN Yan-feng,LUO Rui-ping and CHEN Bao-guo.Numerical Simulation on Time-dependent Behavior of Geo-synthetics Pile-supported Reinforced Embankment[J].Exploration Engineering:Rock & Soil Drilling and Tunneling,2009,36(5):56-58,65.
Authors:SUN Yan-feng  LUO Rui-ping and CHEN Bao-guo
Affiliation:Henan Province Geological Bureau of Nuclear Industry;Hubei Institute of Building Research and Design;Engineering Faculty, China University of Geosciences
Abstract:Finite element numerical simulation was conducted to investigate the time-dependent behavior of geo-synthetics pile-supported reinforced embankments. Based on comparative study on 3 different cases: (1) un-reinforced embankment; (2) reinforced with geo-synthetics; (3) reinforced with both geo-synthetics and pile walls, analysis was made on the variations of excess pore water pressure induced by the embankment load in soft ground and discussion was carried on the variation of the lateral displacement of embankment, construction settlement and settlement after construction, the maximum tension in geo-synthetics and the load sharing ratio of pile walls. The research conclusion can be the valuable reference for the design or construction of embankments in soft ground.
Keywords:embankment  time-dependent behavior  numerical simulation  excess pore water pressure  settlement after construction
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