| 吹填细砂软弱地基处理试验研究 |
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| 引用本文： | 周健,崔积弘,贾敏才,史旦达.吹填细砂软弱地基处理试验研究[J].岩土力学,2008,29(4):859-864. |
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| 作者姓名： | 周健 崔积弘 贾敏才 史旦达 |
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| 作者单位： | 同济大学,地下建筑与工程系,上海,200092 |
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| 基金项目： | 上海市重点学科建设项目 |
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| 摘 要： | 结合实际工程情况，针对吹填细砂及下卧软黏土地基的工程性质，对强夯-降水联合法和无填料振冲法结合整体塑料排水板加固此类地基的适用性进行了试验研究。在试验的基础上，确定了振冲施工工艺的振冲间距、上拔间距等振冲大面积施工参数，同时分析了强夯过程中下卧黏性土中孔隙水压力的增长消散过程及影响因素，得到了一些有益的结论，对类似工程有一定的借鉴意义。
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| 关 键 词： | 强夯 吹填细砂 真空井点降水 无填料振冲法 地基处理 |
| 文章编号： | 1000-7598-(2008)04-859-06 |
| 收稿时间： | 2006-03-14 |
| 修稿时间： | 2006年3月14日 |
In-situ test study on ground treatment of hydraulic fine soils |
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| ZHOU Jian,CUI Ji-hong,JIA Min-cai,SHI Dan-da.In-situ test study on ground treatment of hydraulic fine soils[J].Rock and Soil Mechanics,2008,29(4):859-864. |
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| Authors: | ZHOU Jian CUI Ji-hong JIA Min-cai SHI Dan-da |
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| Institution: | Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | According to Shanghai harbor ground treatment project, considering the engineering properties of fine sands and disturbed soft soils underlying it, method of PVD-improved subsoil with two technologies of vibroflotation compaction without additional stone aggregates for improving fine sands as well as well dewatering combining with dynamic consolidation for strengthening the disturbed soft soils underlying the hydraulic fine sands is introduced. Based on results of field tests, large-area vibroflotation compaction construction parameters are determined; and the increasing and dissipation regularity of excess pore water pressure in different soil layers and its influencing factors are analysed. Finally, some useful conclusions are drawn. |
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| Keywords: | dynamic consolidation hydraulic fine sands vacuum well dewatering vibroflotation without additional backfill materials ground treatment |
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