中低压缩性土地基桩承式加筋路堤时效性分析

doi:10.3969/j.issn.1674-0696.2017.05.08

重庆交通大学学报（自然科学版） ›› 2017, Vol. 36 ›› Issue (5): 40-44.DOI: 10.3969/j.issn.1674-0696.2017.05.08

中低压缩性土地基桩承式加筋路堤时效性分析

丁烈梅1，郭超祥2

（1.山西交通职业技术学院公路工程系，山西太原 030609； 2.山西交通职业技术学院工程管理系，山西太原 030609）

收稿日期:2015-12-23 修回日期:2016-10-08 出版日期:2017-05-18 发布日期:2017-05-18
作者简介:丁烈梅（1971—），女，山西晋中人，副教授，主要从事路基路面工程方面的研究。E-mail:sxjt_jgc@126.com。

Time-Dependent Behavior of Geosynthetic-Reinforced and Pile-Supported Embankment of the Soil with Medium-Low Compressibility

DING Liemei1, GUO Chaoxiang2

（1.Department of Highway Engineering, Shanxi Traffic Vocational and Technical College, Taiyuan 030609, Shanxi, P. R. China; 2.Department of Engineering Management, Shanxi Traffic Vocational and Technical College, Taiyuan 030609, Shanxi, P. R. China）

Received:2015-12-23 Revised:2016-10-08 Online:2017-05-18 Published:2017-05-18

摘要/Abstract

摘要： 以某城际铁路为背景，采用有限差分软件FLAC3D建立三维流固耦合模型，对中低压缩性土地基桩承式加筋路堤的时效性进行对比分析，重点探讨了不加固和桩承式加筋两种工况下地基中超孔隙水压力、地基表面中心沉降和路堤坡脚水平位移随时间的变化规律。结果表明：采用桩承式加筋路堤可以有效控制中低压缩性土地基的路堤填筑施工变形和工后变形，防止地基在路堤填土荷载下发生失稳破坏。

关键词: 道路工程, 中低压缩性土, 桩承式加筋路堤, 时效性, 超孔隙水压力, 工后变形

Abstract: A three-dimensional coupled mechanical and hydraulic model was built by using the finite-difference continuum program (FLAC3D) based on an inter-city railway. The comparison analysis of the time-dependent behavior of the GRPS embankment of the soil with medium-low compressibility was carried out. The variation rule of excess pore water pressure, settlement at the center of sub-grade surface, and horizontal displacement at the embankment toe changing with the time under the condition of the unreinforced ground and the ground reinforced with GRPS were elaborated in detail. The results show that GRPS could effectively control the ground deformation of soil with medium-low compressibility during and after the embankment construction, which prevents the failure and instability of foundation under the embankment load.

Key words: highway engineering, soil with medium-low compressibility, geosynthetic-reinforced and pile-supported embankment, time-dependent behavior, excess pore water pressure, post-construction deformation

中图分类号:

U213.1

丁烈梅1，郭超祥2. 中低压缩性土地基桩承式加筋路堤时效性分析[J]. 重庆交通大学学报（自然科学版）, 2017, 36(5): 40-44.

DING Liemei1, GUO Chaoxiang2. Time-Dependent Behavior of Geosynthetic-Reinforced and Pile-Supported Embankment of the Soil with Medium-Low Compressibility[J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(5): 40-44.

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中低压缩性土地基桩承式加筋路堤时效性分析

Time-Dependent Behavior of Geosynthetic-Reinforced and Pile-Supported Embankment of the Soil with Medium-Low Compressibility

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