桩承式加筋路堤研究综述

doi:10.3969/j.issn.1001-5485.2014.03.003

院报 ›› 2014, Vol. 31 ›› Issue (3): 19-26.DOI: 10.3969/j.issn.1001-5485.2014.03.003

桩承式加筋路堤研究综述

徐超¹, 汪益敏²

1. 同济大学岩土及地下工程教育部重点实验室, 上海 200092;
2. 华南理工大学土木与交通学院, 广州 510640

收稿日期:2013-12-31 修回日期:2014-03-07 出版日期:2014-03-07 发布日期:2014-03-07
作者简介:徐超(1965-), 男, 河南临颍人, 教授, 博士, 主要从事岩土加固和土工合成材料方面的教学和研究工作, (电话)021-65987079(电子信箱)c_axu@tongji.edu.cn。
基金资助:
国家自然科学基金资助项目(41272293)

Research Advances of Basal Reinforced and Pile Supported Embankments

XU Chao¹, WANG Yi-min²

1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2.School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China

Received:2013-12-31 Revised:2014-03-07 Online:2014-03-07 Published:2014-03-07

摘要/Abstract

摘要： 在软土地基上进行路堤工程建设, 主要面临稳定性和变形2方面的问题, 桩承式加筋路堤不仅能够提高路堤的稳定性, 而且能够控制路基的沉降。通过一系列室内模型试验、现场原型监测和数值分析, 人们对桩承式加筋路堤中的土拱效应和加筋拉膜效应, 以及路堤荷载传递机制已形成比较一致的看法, 并在各种土拱模型理论指导下形成多种桩承式加筋路堤设计方法。但目前对桩承式加筋路堤的土拱形态和成拱条件认识不一致, 重复荷载下土拱效应演变规律缺乏定量研究, 现行设计方法对路堤沉降控制仍显不足。在综述桩承式加筋路堤已有研究成果的基础上, 重点论述桩承式加筋路堤的作用机理理论与应用研究的成果, 提出了对存在问题做进一步研究的建议。

关键词: 软土地基, 桩承式加筋路堤, 土拱效应, 桩体荷载分担比

Abstract: Stability and deformation are main issues of embankment construction on soft soils. The techniques of basal reinforcement and pile support could enhance the embankment stability and control the subgrade settlement. Through laboratory model tests, prototype monitoring and numerical modeling, researches on the soil arching effect and reinforcement tensioned membrane effect as well as the load transfer mechanism have been in consistency. A variety of design methods of GRPS (Geosynthetic-reinforced and Pile-supported) embankments have come into being. However, researches on the arching shape and the conditions of arching development have not reached an agreement. Quantitative studies on the variation regularity of arching effect under repeated loading are in lack. The control of embankment settlement hasn’t received sufficient attention in current design specifications. On the basis of previous research achievements, the mechanism and application of GRPS embankments are expounded, and suggestions for further researches are put forward.

Key words: soft soil foundation, geosynthetic reinforced and pile-supported (GRPS) embankments, soil arching effect, pile efficacy

中图分类号:

TU443

徐超, 汪益敏. 桩承式加筋路堤研究综述[J]. 院报, 2014, 31(3): 19-26.

XU Chao, WANG Yi-min. Research Advances of Basal Reinforced and Pile Supported Embankments[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2014, 31(3): 19-26.

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桩承式加筋路堤研究综述

Research Advances of Basal Reinforced and Pile Supported Embankments

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