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首页> 外文期刊>Geosynthetics International >2D and 3D simulation of geogrid-reinforced geocomposite material embankment on soft Bangkok clay
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2D and 3D simulation of geogrid-reinforced geocomposite material embankment on soft Bangkok clay

机译：软曼谷粘土上土工格栅加筋土工复合材料路堤的2D和3D模拟

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摘要

ABSTRACT: A full-scale test embankment, 6.0 m high, was constructed on soft Bangkok claynusing a rubber tire chip–sand mixture as a geocomposite material reinforced with geogridnreinforcement with concrete block facing in the middle portion of the embankment. Silty sandnbackfill with rock-filled gabion facing were utilized at the sloping sides. The vertical and lateralndeformations as well as excess pore pressures were monitored for 1 year. This study attempted tonsimulate the behavior of the full-scale test embankment by two-dimensional (2D) and three-ndimensional (3D) numerical analyses. The 2D analysis was performed by PLAXIS software usingnundrained analysis in the construction stage and, thereafter, consolidation analysis was performednduring the service stage. The 3D analysis was investigated by FLAC3D software using the samenconstitutive models and properties of foundation soils as published by previous researchers. Owingnto the use of geocomposite material as embankment materials, the observed values of the verticalnand horizontal deformations, excess pore pressures, and the reinforcement tensions were quite low.nThus, there were no significant differences between the 2D and 3D simulated results in comparisonnwith the corresponding measurements of embankment behavior. As expected, however, the 3Dnpredictions were slightly lower than the corresponding values from the 2D predictions.nConsequently, the lower 3D predicted values of vertical and lateral deformations, excess porenpressures and reinforcement tensions in comparison with the 2D predictions were quite consistentnand reasonable.
机译：摘要：一块高6.0 m的全尺寸试验路堤在柔软的Bangkok粘土上建造，使用橡胶轮胎碎屑-砂混合物作为土工复合材料，并加筋了土工格栅，路堤中间部分有混凝土砌块。坡面采用了充满石质石笼面的粉质沙质回填土。垂直和横向变形以及过大的孔隙压力都被监测了一年。这项研究试图通过二维（2D）和三维（3D）数值分析来模拟全尺寸测试路堤的行为。在施工阶段，通过PLAXIS软件使用不排水分析进行2D分析，然后在服务阶段进行固结分析。通过FLAC3D软件使用与以前的研究人员相同的本构模型和基础土的特性对3D分析进行了研究。由于使用土工复合材料作为路堤材料，垂直和水平变形，过大孔隙压力和加固张力的观测值都非常低。n因此，与相应的测量结果相比，2D和3D模拟结果之间没有显着差异。路堤行为。但是，正如预期的那样，3Dn预测值略低于2D预测中的相应值.n因此，与2D预测相比，垂直和横向变形，过高的孔隙压力和增强张力的3D预测值较低，这是相当一致且合理的。

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  • 来源
    《Geosynthetics International》 |2009年第6期|p.420-432|共13页
  • 作者

    T. Tanchaisawat D. T. Bergado and P. Voottipruex;

  • 作者单位

    1nLecturer, Department of Civil and Environmental Engineering, Faculty of Science and Engineering,nKasetsart University Chalermprakiat Sakonnakhon Province Campus, Sakonnakhon, Thailand, 47000,nTelephone: 664 272 5033 ext 3421, Telefax: 644 272 5034, E-mail: tawatchai.t@ku.ac.thn2nProfessor, Geotechnical and Geoenvironmental Engineering Program, School of Engineering andnTechnology, Asian Institute of Technology, P.O. Box 4, Pathumthani, Thailand, 12120,nTelephone: 662 524 5512, Telefax: 662 524 6050, E-mail: bergado@ait.ac.thn3nAssociate Professor, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand,n10800, Telephone: +662 913 2500, Telefax +662 587 8260, E-mail: pnv@kmutnb.ac.th;

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  • 正文语种 eng
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  • 关键词

    Geosynthetics, Finite element, Finite difference, Reinforced embankment, Geocomposite;

    机译：土工合成材料;有限元;有限差分;加筋路堤;土工复合材料;

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