| 考虑蠕变特性的软土路堤沉降有限元分析 |
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| 引用本文： | 朱强,张惠明. 考虑蠕变特性的软土路堤沉降有限元分析[J]. 盐城工学院学报(自然科学版), 2007, 20(1): 64-67 |
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| 作者姓名： | 朱强 张惠明 |
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| 作者单位： | 1. 河海大学,土木工程学院,江苏,南京,210098;珠海铁科岩土工程技术开发有限公司,广东,珠海,519000
2. 珠海铁科岩土工程技术开发有限公司,广东,珠海,519000 |
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| 摘 要： | 高速公路软土地基的工后沉降很大部分来自软土的次固结沉降,因此采用有限元计算工后沉降有必要考虑软土的蠕变特性。利用Plaxis软件对揭普高速某断面软土地基路堤填土施工进行数值模拟,通过等效渗透系数将砂井地基简化为天然地基进行计算,考虑软土蠕变特性,采用软土蠕变(SSC)模型,结合B iot固结有限元,计算施工期沉降和工后沉降,得到与实际较相符的结果。
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| 关 键 词： | 软土地基 有限元分析 揭普软土 蠕变 工后沉降 |
| 文章编号： | 1671-5322（2007）01-0064-04 |
| 收稿时间： | 2006-11-27 |
| 修稿时间： | 2006-11-27 |
Finite Element Analysis of Soft Clay Road Embankment Settlement Consideringits Creep Nature |
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| ZHU Qiang,ZHANG Hui-ming. Finite Element Analysis of Soft Clay Road Embankment Settlement Consideringits Creep Nature[J]. Journal of Yancheng Institute of Technology(Natural Science Edition), 2007, 20(1): 64-67 |
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| Authors: | ZHU Qiang ZHANG Hui-ming |
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| Affiliation: | 1.College of civil engineering,Hohai university,Jiangsu Nanjing 210098,China;2.Zhuhai Tieke Geotechnical Engineering Company,Guangdong Zhuhai 519000,China |
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| Abstract: | Secondary compression occupies a significant part of post-construction settlement.Soft soil creep behavior shall be taken into account when estimate the post-construction settlement.This paper presents results of consolidation analyse of the soft clay layers underneath embankment in Jiepu expressway using a soft soil creep model(SSC) in the FE Plaxis program.The sand drains improved ground can be converted into homogeneous subsoil with equivalent consolidation coefficient.Numerical results from the FE analyse are in good agreement with field measured values. |
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| Keywords: | soft ground finite element analysis Jiepu soft soil creep post-construction settlement |
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