Test methods for self-weight consolidation coefficient of deposited sediment

被引：0
|
作者：
Guo S.-J. [1 ,2 ]
Zhang F.-H. [3 ]
Song X.-G. [1 ,2 ]
机构：
[1] The Third Railway Survey and Design Institute Group Corporation, Tianjin
[2] National Engineering Laboratory for Digital Construction and Evaluation Technology of Urban Rail Transit, Tianjin
[3] Institute of Geotechnical Engineering, Hohai University, Nanjing
来源：
| 1600年 / Chinese Society of Civil Engineering卷 / 39期
关键词：
Deposited sediment; Large strain consolidation; Self-weight consolidation coefficient; Settlement column experiment;
D O I：
10.11779/CJGE2017S1014
中图分类号：
学科分类号：
摘要：
The consolidation coefficient in the Terzaghi theory is constant. It will cause significant errors if it is directly applied in the calculation of large strain consolidation of deposited sediment. Meanwhile, it is still extremely difficult to obtain the self-weight consolidation coefficient of deposited sediment. Especially, the sediment deposition and consolidation process can be simulated using the sediment settlement experiment with realtively row initial concentration, and the curves of sediment settlement and deposited layer particle volume fraction also can be obtained accordingly. Based on the sediment settlemen control equations for different settlement stages, the fitted sediment settlment parameters can be determined through the mapping method, and then the self-weight consolidation coefficient of deposited sediment at different consolidation stages can be calculated. According to the change laws of hydraulic conductivity and volumetric compression coefficient, four methods for the consolidation coefficient are discussed, and the the trends and main influence factors are studied. © 2017, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
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页码：69 / 73
页数：4
相关论文
共 10 条
  • [1] Xie X.-Y., Zhu X.-R., Xia J.-Z., The research on the one-dimensional large-strain coefficient of consolidation for saturated soil, Journal of Zhejiang University, 32, 3, pp. 319-324, (1998)
  • [2] Lucas M.B., Consolidation and strength evolution of soft mud layers, (2000)
  • [3] Xie X.-Y., Zhu X.-R., Xie K.-H., Et al., New developments of one-dimensional large strain consolidation theories, Chinese Journal of Geotechnical Engineering, 19, 4, pp. 30-38, (1997)
  • [4] Liu Y., Wang Q., The deposition laboratory tests for the sedmentation of dredger fill in the Lianyungang area, Jiangsu, Geological Bulletin of China, 25, 6, pp. 762-765, (2006)
  • [5] Lin L.-M., Feng R.-X., The Strained characteristic of mud and the calculation of the foundation's settlement, Journal of West Anhui University, 19, 2, pp. 81-84, (2003)
  • [6] Toh S.H., Fahey M., Numerical and centrifuge modeling of large strain consolidation, Computer Methods and Geomechanics. Rotterdam: Balkema, pp. 279-284, (1991)
  • [7] Hong Z.-S., One-dimensional mathematical model for large-strain consolidation of dredged-fill soil, Journal of Hohai University, 15, 6, pp. 27-36, (1987)
  • [8] Lin P., Xu Z.-H., Xu P., Et al., Research on coefficient of consolidation of soft clay under compression, Rock and Soil Mechanics, 24, 1, pp. 106-112, (2003)
  • [9] Olson R.E., Settlement of embankment on soft clays, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 124, 4, pp. 278-288, (1998)
  • [10] Yin Z.-Z., Geotechnical principles, (2007)
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