| 软土地基上土工格栅加筋堤防工作性态数值分析 |
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| 引用本文： | 沈慧萍,吴海民.软土地基上土工格栅加筋堤防工作性态数值分析[J].水电能源科学,2013,31(11):109-112. |
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| 作者姓名： | 沈慧萍 吴海民 |
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| 作者单位： | 南京交通职业技术学院 路桥与港航工程学院， 江苏 南京 211188;河海大学 水文水资源与水利工程科学国家重点实验室， 江苏 南京 210098 |
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| 摘 要： | 鉴于软土地基上土工格栅加筋堤防工作性态的预测和评价是工程设计中的关键技术之一，结合某水利工程中软土地基上的土工格栅加筋堤防结构，采用大型岩土工程专业分析软件FLAC3D对该加筋堤防运行期的受力变形特性进行了数值分析，获得了堤身应力及塑性区范围、筋材的应力分布、地基及堤身的沉降和侧向变形等工作性态规律。计算结果表明，堤身底部土工格栅加筋效果较好，能有效减小地基水平位移和堤身塑性区范围，但当加筋层数超过两层后，加筋效果不再明显。
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| 关 键 词： | 软土地基 土工格栅 加筋堤防 数值分析 有限差分法 工作性态 |
Numerical Analysis of Operation Behavior of Geogrid Reinforced Embankment on Soft Soil Foundation |
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| SHEN Huiping and WU Haimin.Numerical Analysis of Operation Behavior of Geogrid Reinforced Embankment on Soft Soil Foundation[J].International Journal Hydroelectric Energy,2013,31(11):109-112. |
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| Authors: | SHEN Huiping and WU Haimin |
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| Abstract: | The operation behavior prediction and performance evaluation of embankment on soft soil foundation are one of the key technologies for engineering design. The stresses and deformation behaviors of a geogrid reinforced embankment structure on soft soil foundation in a hydraulic engineering are numerically analyzed by using large geotechnical engineering analysis program FLAC3D. The settlement and lateral deformation of embankment and foundation, stresses and range of plastic zones of embankment, tension stress distributions of geogrid are obtained. The computed results show that reinforcement using geogrid has a good effect for the embankment on soft soil foundation. It can effectively reduce horizontal displacement and range of plastic zones of embankment. But the reinforcement effect is no longer obvious when reinforcements are more than two layers. |
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