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| 高真空击密法加固滨海吹填土地基试验研究 | |
| 引用本文： | 高有斌,刘汉龙,王博,徐士龙.高真空击密法加固滨海吹填土地基试验研究[J].工业建筑,2011,41(8):64-68. |
| 作者姓名： | 高有斌 刘汉龙 王博 徐士龙 |
| 作者单位： | 1. 郑州大学水利与环境学院,郑州,450001 2. 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098 3. 上海港湾软地基工程有限公司,上海,200092 |
| 基金项目： | 浙江省重大科技专项(2009C03001) |
| 摘 要： | 采用高真空击密法加固某滨海饱和吹填砂性土地基。试验结果表明：1）井点强降水能迅速降低夯前地下水位和静孔隙水压力,有效抑制强夯时产生的超静孔隙水压力的增长;2）不同夯点产生的动应力对土体沿深度产生叠加效应,深度为（2～3）倍夯锤直径处的土体强度提高最显著,且夯点间距越小加固效果越好,但对有效加固深度没有明显影响;3）加固... |
| 关 键 词： | 高真空击密法 强夯法 饱和吹填土 地基处理 现场试验 |
EXPERIMENTAL RESEARCH ON HIGH VACUUM DENSIFICATION METHOD TO REINFORCE SATURATED DREDGER FILL FOUNDATION |
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| Gao Youbin,Liu Hanlong,Wang Bo,Xu Shilong.EXPERIMENTAL RESEARCH ON HIGH VACUUM DENSIFICATION METHOD TO REINFORCE SATURATED DREDGER FILL FOUNDATION[J].Industrial Construction,2011,41(8):64-68. | |
| Authors: | Gao Youbin Liu Hanlong Wang Bo Xu Shilong |
| Affiliation: | 1.College of Water Conservancy and Environment Engineering,Zhengzhou University,Zhengzhou 450001,China; 2.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University, Nanjing 210098,China;3.Shanghai Harbor Soft Soil Treatment Engineering Co.Ltd,Shanghai 200092,China) |
| Abstract: | In this paper,high vacuum densification method reinforced saturated dredger fill foundation in coastal land was introduced.Test results show: Firstly,powerful well-point dewatering can quickly decrease the groundwater table and static pore water pressure before ramming,which can effectively limit growth of super static pore water pressure in the process of ramming.Secondly,dynamic stress caused by different ramming point produces overlapping effect along the depth and the most significant soil strength appear about depth of double to treble hammer diameter.The smaller the ramming point spacing is,the better the reinforcement effect will be.While the ramming point spacing takes little impact on effective reinforcement depth.Thirdly,soil strength and foundation bearing capacity increase greatly,effective reinforcement depth is about 8 m;all these are satisfied for design requirements.It is useful and good to improve to saturated dredger fill foundation with high vacuum densification method in the practice. |
| Keywords: | high vacuum densification method dynamic consolidation saturated dredger fill foundation treatment field test |
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