Measurement of K0 and K0′ during loading and unloading of loose sand

被引:1
作者
Nachum, Shay [1 ]
Talesnick, Mark [1 ]
Frydman, Sam [1 ]
机构
[1] Technion Israel Inst Technol, Fac Civil & Environm Engn, IL-32000 H_efa, Israel
关键词
K-0; confined loading; confined unloading; loose sand; side-wall friction; EARTH PRESSURE; PILE; COEFFICIENT;
D O I
10.12989/gae.2023.32.1.097
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The coefficient of lateral earth pressure at rest in loose sand during virgin loading, K-0, and during unloading, K-0 ', have been determined from laterally confined load-unload tests. The tests included measurement of lateral pressure with null pressure gauges, side wall friction with newly designed friction meters and applied pressure and base pressure with load cells. The importance of accounting for side-wall friction when evaluating the distribution of vertical pressure over the height of the soil specimen was demonstrated. Relatively uniform friction was observed during loading, but this was not the case during unloading unless friction reduction measures were employed. While the measured value of K-0 was found to be close to, if slightly higher than the value commonly estimated on the basis of friction angle, phi', the ratio of K-0 ' to K0 was found to reasonably fit an expression of the form K-0 '/K-0 = 1 + C center dot log(OCR), with C equal to 1 in the present tests.
引用
收藏
页码:97 / 110
页数:14
相关论文
共 28 条
  • [1] [Anonymous], 2017, D248711 ASTM, DOI DOI 10.1520/D2487-17
  • [2] ASTM, 2000, D425400 ASTM
  • [3] Numerical study on the optimal position of a pile for stabilization purpose of a slope
    Boulfoul, Khalifa
    Hammoud, Farid
    Abbeche, Khelifa
    [J]. GEOMECHANICS AND ENGINEERING, 2020, 21 (05) : 401 - 411
  • [4] CGS (Canadian Geotechnical Society), 2006, CAN FDN ENG MAN, V4th ed
  • [5] FEM-based modelling of stabilized fibrous peat by end-bearing cement deep mixing columns
    Dehghanbanadaki, Ali
    Motamedi, Shervin
    Ahmad, Kamarudin
    [J]. GEOMECHANICS AND ENGINEERING, 2020, 20 (01) : 75 - 85
  • [6] Frydman S., 2000, ISR J EARTH SCI, V49, P56, DOI [10.1560/45MG-XCEX-P963-VANL, DOI 10.1560/45MG-XCEX-P963-VANL]
  • [7] Experimental and DEM Examinations of K0 in Sand under Different Loading Conditions
    Gao, Y.
    Wang, Y. H.
    [J]. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2014, 140 (05)
  • [8] Effect of the lateral earth pressure coefficient on settlements during mechanized tunneling
    Golpasand, Mohammad-Reza B.
    Do, Ngoc Anh
    Dias, Daniel
    Nikudel, Mohammad-Reza
    [J]. GEOMECHANICS AND ENGINEERING, 2018, 16 (06) : 643 - 654
  • [9] Discrete Element Analysis of the K0 of Granular Soil and Its Relation to Small Strain Shear Stiffness
    Gu, Xiaoqiang
    Hu, Jing
    Huang, Maosong
    Yang, Jun
    [J]. INTERNATIONAL JOURNAL OF GEOMECHANICS, 2018, 18 (03)
  • [10] Gu XQ, 2015, GRANUL MATTER, V17, P703, DOI 10.1007/s10035-015-0588-7