高级搜索
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊

排水板周围土体径向固结室内模型试验研究

陈雷, 张福海, 李治朋, 安彦勇, 李玉龙

陈雷, 张福海, 李治朋, 安彦勇, 李玉龙. 排水板周围土体径向固结室内模型试验研究[J]. 岩土工程学报, 2016, 38(zk1): 163-168. DOI: 10.11779/CJGE2016S1031
引用本文: 陈雷, 张福海, 李治朋, 安彦勇, 李玉龙. 排水板周围土体径向固结室内模型试验研究[J]. 岩土工程学报, 2016, 38(zk1): 163-168. DOI: 10.11779/CJGE2016S1031
shu
CHEN Lei, ZHANG Fu-hai, LI Zhi-peng, AN Yan-yong, LI Yu-long. Experimental study on radial consolidation of soil around drainage plate[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(zk1): 163-168. DOI: 10.11779/CJGE2016S1031
Citation: CHEN Lei, ZHANG Fu-hai, LI Zhi-peng, AN Yan-yong, LI Yu-long. Experimental study on radial consolidation of soil around drainage plate[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(zk1): 163-168. DOI: 10.11779/CJGE2016S1031
shu

排水板周围土体径向固结室内模型试验研究  English Version

  • 1. 交通运输部天津水运工程科学研究所,天津 300456;
    2.河海大学岩土力学与堤坝工程教育部重点实验室,江苏 南京 210098;
    3. 河海大学岩土工程科学研究所,江苏 南京 210098;
    4. 天津市勘察院,天津 300191

基金项目: 中央高校科研业务费项目（B15020060）
详细信息
    作者简介:

    陈 雷(1988- ),男,河南省南阳人,助理工程师,主要从事软土地基处理和岩土工程测试方面的研究。E-mail: tkschenlei@126.com.

Experimental study on radial consolidation of soil around drainage plate

  • 1. Tianjin Research Institute of Water Transport Engineering, M.O.T. Tianjin, 300456, China;
    2. Key Laboratory of Ministry of Education for Geo-mechanics and Embankment Engineering, Hohai University, Nanjing 210098, China;
    3. Institute of Geotechnical Engineering, HoHai University, Nanjing 210098, China;
    4.Tianjin Institute of Geotechnical Investigation & Surveying, Tianjin 300191, China

摘要

    摘要
  • 摘要: 考虑真空负压沿排水板的衰减分布对排水板周围土体固结特性的影响,开展室内模型试验模拟某一深度处预压地基排水体中真空负压对其周围土体径向固结的过程。通过分析排水板周边土体基本物理力学性质、渗透性、压缩性及土颗分的时空分布特点,研究不同真空负压强度对排水板周围土体径向固结的影响。试验结果表明随着真空度沿着排水体的衰减,排水板对周围土体的影响范围逐渐缩小,在软基深部有大面积的交叉影响区,对软基浅部优于深部;细微颗粒在真空负压差作用下发生向着排水板方向运移并,使得在排水板周围细颗粒含量增大,远端细微颗粒减少;基于真空渗流场理论,结合颗分试验结果,分析了真空预压过程中细颗粒运移成因,进一步解释了“土桩”形成机理。
    Abstract: Considering the influence of attenuation distribution pattern of negative pressure along a PVD, model tests are carried out to simulate the process of radial consolidation of soil around the PVD at a depth of foundation with vacuum negative pressure. By analyzing the characteristics of the physico-mechanical properties of soil, permeability, compressibility and particle distribution along the radius, the influence of different vacuum negative pressure on the radial consolidation of soil around the PVD is studied. The experimental results show that with the decrease of the vacuum degree along the PVD, the influence of drainage plate on the surrounding soil is gradually reduced and the depth of the soft foundation is better than that of the deeper part. Under the vacuum negative pressure difference, the fine particles move toward to the PVD, making fine particles content increase around the PVD. Based on the vacuum seepage field theory, combined with the test results, the cause of migration of fine particles in the vacuum preloading process is analyzed, and the formation mechanism of the soil pile is further explained.
    • HTML全文
    • 参考文献(15)
  • [1] 董志良, 张功新, 周 琦, 等. 天津滨海新区吹填造陆浅层超软土加固技术研发及应用[J]. 岩石力学与工程学报, 2011, 30(5): 1073-1080. (DONG Zhi-liang, ZHANG Gong-xin, ZHOU Qi, et al.Research and application of improvement technology ofshallow ultra-soft soil formed by hydraulic reclamation in Tian jin Binhai new area[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(5): 1073-1080. (in Chinese))
    [2] 娄 炎. 真空排水预压法加固软土技术[M]. 北京: 人民交通出版社, 2001. (LOU Yan. Technique of vacuum drainage preloading[M]. Beijing: China Communications Press, 2002. (in Chinese))
    [3] 陈 环, 鲍秀清. 负压条件下土的固结有效应力[ J] .岩土工程学报, 1984, 6(5): 39-47. (CHEN Huan, BAO Xiu-qing. Effective stress of soil under negative pressure[J]. Chinese Journal of Geotechnical Engineering, 1984, 6(5): :9-47. (in Chinese) )
    [4] 高志义. 真空预压法的机理分析[J]. 岩土工程学报, 1989, 11(4): 45-55. (GAO Zhi-yi. Mechanism analysis of vacuum preloading method[J]. Chinese Journal of Geotechnical Engineering, 1989, 11(4): 45-55. (in Chinese))
    [5] 孙立强, 闫澍旺, 李 伟, 等. 超软土真空预压室内模型试验研究[J]. 岩土力学, 2011, 32(4): 984-990. (SUN Li-qiang, YAN Shu-wang, LI Wei, et al. Study ofsuper-soft soil vacuum preloading model test[J]. Rock and Soil Mechanics, 2011, 32(4): 984-990. (in Chinese))
    [6] SRIDHAR G, GU H D. ImProvement of meehanieal ProPerties of ferrum lime stabilized soil with the addition of alumimim sludg[J]. Journal of the Society of Materials Science, Japan, 2001, 50(3): 47-53.
    [7] INDRARATNA B, RUJIKIATKAMJORN C, AMERATUNGA J, et al. Performance and prediction of vacuum combined surcharge consolidation at port of brisbane[J]. Journal of Geotechnical & Geoenvironmental Engineering, ASCE, 2011, 137(11): 1009-1018.
    [8] INDRARATNA B, REDANA I W. Plane-strain modeling of smear effects associated with vertical drains[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(5): 474-478.
    [9] 周 琦, 张功新, 王友元, 等. 真空预压条件下的砂井地基Hansbo固结解[J]. 岩石力学与工程学报, 2010, 29(增刊2): 3994-3998. (ZHOU Qi, ZHANG Gong-xin, WANG You-yuan, et al. Hansbo consolidation solution for and-drained ground under vacuum preloading[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S2): 3994-3998. (in Chinese))
    [10] 朱建才, 温晓贵, 龚晓南, 等. 真空排水预压法中真空度分布的影响因素分析[J]. 哈尔滨工业大学学报, 2003, 11(35): 1399-1408. (ZHU Jian-cai, WEN Xiao-gui, GONG Xiao-nan, et al. Analysis of factors having effect on distribution of vacuum degrees during soft ground by vacuum drainage preloading[J]. Journal of Harbin Institute of Technology, 2003, 11(35): 1399-1408. (in Chinese))
    [11] 朱建才, 温晓贵, 龚晓南. 真空排水预压加固软基中的孔隙水压力消散规律[J]. 水利学报, 2004(8): 123-128. (ZHU Jian-cai, WEN Xiao-gui, GONG Xiao-nan. Dissipation of pore water pressure in soft foundation reinforced by vacuum drainage preloading[J]. Journal of Hydraulic Engineering, 2004(8): 123-128. (in Chinese))
    [12] 龚晓南, 岑仰润. 真空预压加固软土地基机理探讨[J]. 哈尔滨建筑大学学报, 2002, 35(2): 7-10. (GONG Xiao-nan, CEN Yang-run. Mechanism of vacuum preloading[J]. Journal of Haibin University of C.E. & Architecture, 2002, 35(2): 7-10. (in Chinese))
    [13] 陈平山, 董志良, 张功新. 新吹填淤泥浅表层加固中“土桩”形成机理及数值分析[J]. 水运工程, 2012(1): 158-163. (CHEN Ping-shan, DONG Zhi-liang, ZHANG Gong-xin. Mechanism and numerical simulation of the“soil piles” in the fresh hydraulic mud fill treated by surface-layer improvement technique[J]. Port & Waterway Engineering. 2012(1): 158-163. (in Chinese))
    [14] 武亚军, 杨建波, 张孟喜. 真空加载方式对吹填流泥加固效果及土颗粒移动的影响研究[J]. 岩土力学, 2013, 34(8): 2129-2135. (WU Ya-jun, YANG Jian-bo, ZHANG Meng-xi. Study of impact of vacuum loading mode on dredger fill flow mud consolidation effect and soil particles moving[J]. Rockand Soil Mechanics, 2013, 34(8): 2129-2135. (in Chinese))
    [15] 颜永国. 真空荷载下不同颗粒级配软土真空度传递规律试验研究[J]. 水运工程, 2010(10): 109-112. (YAN Yong-guo. Experimental study on vacuum degree transfer law of soft clay of different grain size grading under vacuum preloading[J]. Port & Waterway Engineering, 2010(10): 109-112. (in Chinese))
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数:  309
  • HTML全文浏览量:  10
  • PDF下载量:  247
  • 被引次数: 0
出版历程
  • 收稿日期:  2015-11-29
  • 发布日期:  2016-03-24

目录

摘要
HTML全文
    参考文献(15)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回
    版权所有 © 2010水利部交通部国家能源局南京水利科学研究院 苏ICP备05007122号-11公安联网备案号：32010602011255
    编辑部地址：南京市虎踞关34号《岩土工程学报》编辑部邮编：210024电话：025-85829534，85829556E-mail: ge@nhri.cn