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中国公路学报
CHINA JOURNAL OF HIGHWAY AND TRANSPORT
2007 Vol.20 No.2 P.7-12

数字化期刊

桩承式加筋路堤关键问题研究

陈仁朋  徐正中  陈云敏 

摘 要:利用弹塑性有限元方法研究了桩承式加筋路堤应用中的几个关键问题,包括桩承式路堤的沉降组成和分布规律、适用条件、荷载分担比的影响因素等.具体研究了未打穿软土层情况下不同路堤高度时的路堤沉降规律,在打穿和未打穿2种情况下荷载分担比随桩托板尺寸、桩间距、路堤高度等因素的变化规律及土工格栅的作用.结果表明:路堤沉降主要取决于桩端以下软土层的压缩;荷载分担比随桩托板尺寸和路堤高度的增加而增大,随桩间距的增加而减小;土工格栅对荷载分担比和路堤沉降影响都不大.
关键词:道路工程;桩承式加筋路堤;有限元方法;沉降;荷载分担比;土拱效应
分类号:U416.12 文献标识码:A

文章编号:1001-7372(2007)02-0007-06

Research on Key Problems of Pile-supported Reinforced Embankment

CHEN Ren-peng  XU Zheng-zhong  CHEN Yun-min 

基金项目:国家自然科学基金项目(50308026)
作者简介:陈仁朋(1972-),男,浙江衢州人,副教授,工学博士,E-mail:chenrp@zju.edu.cn.
作者单位:陈仁朋(浙江大学,岩土工程研究所,浙江,杭州,310027) 
     徐正中(浙江大学,岩土工程研究所,浙江,杭州,310027) 
     陈云敏(浙江大学,岩土工程研究所,浙江,杭州,310027) 

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收稿日期:2006年7月21日

出版日期:2007年3月31日

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