| 水泥土桩联合土工格栅复合地基的离心模型试验研究 |
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| 引用本文： | 崔溦,闫澍旺.水泥土桩联合土工格栅复合地基的离心模型试验研究[J].岩土力学,2008,29(5):1315-1319. |
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| 作者姓名： | 崔溦 闫澍旺 |
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| 作者单位： | 天津人学建工学院,天津,300072 |
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| 基金项目： | 天津大学校科研和教改项目 |
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| 摘 要： | 在软土地基上修筑路堤需要兼顾承载力和变形两方面的要求.针对山区沟谷软基的特点,采用了夯实水泥土桩与土工格栅联合加固的方法,是一种创新,选择合适的试验手段来研究该种型式的复合地基对于工程设计和施工具有重要意义.通过离心模型试验,模拟夯实水泥土桩联合土工格栅复合地基上路堤的填筑进程,水泥土桩采用石膏柱模拟,土工格栅采用预拉伸加筋格网模拟,试验得出了该种复合地基的工程特性.夯实水泥土桩具有较好的加固基础作用,格栅的主要作用是均衡上部荷载和减小差异沉降,采用夯实水泥土桩联合土工格栅的复合地基形式可以满足沟谷软基的沉降控制要求,其最终结论可以为设计和施工提供参考.
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| 关 键 词： | 夯实水泥土桩 土工格栅 复合地基 离心模型试验 水泥土桩 土工格栅 复合地基 离心模型试验 研究 piles supported geogrid reinforced soft clay embankment 工程设计和施工 终结论 控制要求 差异沉降 荷载 均衡 基础作用 加固 工程特性 |
| 文章编号： | 1000-7598-(2008)05-1315-05 |
| 收稿时间： | 2006-10-21 |
| 修稿时间： | 2006年10月21 |
Centrifugal model test of an embankment on soft clay reinforced with geogrid and supported by soil-cement piles |
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| CUI Wei,YAN Shu-wang.Centrifugal model test of an embankment on soft clay reinforced with geogrid and supported by soil-cement piles[J].Rock and Soil Mechanics,2008,29(5):1315-1319. |
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| Authors: | CUI Wei YAN Shu-wang |
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| Institution: | School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | Both the bearing capacity and deformation have to be considered when the embankment is constructed on the soft foundation. Based on the main features of the soft ground in mountainous areas, using the soil-cement piles and geogrid to improve the soft foundation is an innovation. It is significant for engineering design and construction that choosing appropriate experimental measure to study this type composite foundation. Centrifugal model test was used to simulate construction course of embankment on soil-cement piles and geogrid composite foundation. Gypsum column and a type of pretensioning grid are used to simulate soil-cement pile and geogrid, respectively. Engineering characteristics of this type composite foundation were presented. The results indicate that soil-cement piles play an important role in strengthening soft foundation; and the effect of the geogrid is mainly to balance loads and constrain lateral deformation. The conclusion can be for reference in design and construction. |
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| Keywords: | soil-cement pile geogrid composite foundation centrifugal model test |
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