Influence of Boundary Conditions on Undrained Simple Shear Tests

被引:0
|
作者
Airey, David [1 ]
Acharya, Bhagaban [2 ]
机构
[1] Univ Sydney, Sch Civil Engn, 225 Shepherd St,Bldg J05, Darlington, NSW 2008, Australia
[2] V Line Corp, L 452 Flinders St, Melbourne, Vic 3000, Australia
来源
GEOTECHNICAL TESTING JOURNAL | 2025年
关键词
simple shear apparatus; boundary conditions; specimen geometry; clay; STRENGTH; BEHAVIOR;
D O I
10.1520/GTJ20240029
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
This article presents the results of an experimental study conducted using kaolin investigate the effects of different vertical boundary confinement methods and specimen geometry on the stress-strain-strength behavior of clay subjected to monotonic undrained simple shear loading. The confinement methods included using conventional reinforced branes (RM), stacked rings (SR), and flexible membranes (FM). The FM required an applied pressure to maintain one-dimensional conditions during compression, and during shear, cell pressure was controlled to either maintain constant vertical stress (FM(CVS)), or to provide constant confining pressure (FM(CCP)). The specimen geometry was varied with the diameter (D) varying from 60 to 80 mm and the diameter/height ratio (D/H) varying from Measured values of the undrained shear strength (s(u)) and simple shear friction angle (phi'(ss))produced from the tests with FM(CCP), RM, and SR were comparable with each However, the tests with FM(CVS) produced higher values of the s(u) and phi'(ss) compared the tests with FM(CCP), RM, and SR confinement systems. The gradually rising confining sure required to maintain the constant vertical stress during the shearing stage of the FM(CVS) tests is associated with the higher values of the s(u )and phi'(ss) compared with the tests with confinement systems. It is also demonstrated that the geometry has a minor influence undrained strength and is essentially independent of the D/H ratio of the specimen within range of 2 <= D/H <= 4 consistent with other studies.
引用
收藏
页数:14
相关论文
共 50 条
  • [31] Undrained monotonic and cyclic strength of compacted rockfill material from triaxial and torsional simple shear tests
    Yasuda, N
    Matsumoto, N
    Yoshioka, R
    Takahashi, M
    CANADIAN GEOTECHNICAL JOURNAL, 1997, 34 (03) : 357 - 367
  • [32] Behaviour of calcareous soils in undrained cyclic simple shear
    Mao, X
    Fahey, M
    GEOTECHNIQUE, 2003, 53 (08): : 715 - 727
  • [33] Simple Modelling of Undrained Shear Response of Granular Materials
    Wu, Yang
    Wen, Liwei
    PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2018, 62 (04): : 947 - 955
  • [34] Influence of cyclic preshearing on the monotonic shear behavior of saturated silt under undrained conditions
    Zhao K.
    Jiang P.
    Qin Y.
    Wu Q.
    Chen G.
    Zhao, Kai (zhaokai@njtech.edu.cn), 1600, Editorial Board of Journal of Harbin Engineering (41): : 1184 - 1189
  • [35] REVIEW OF UNDRAINED STRENGTH IN DIRECT SIMPLE SHEAR.
    Mayne, Paul W.
    Soils and Foundations, 1985, 25 (03) : 64 - 72
  • [36] Shear behavior of waste rock materials in drained and undrained ring shear tests
    Jeong, Sueng Won
    Park, Sung-Sik
    Fukuoka, Hiroshi
    GEOSCIENCES JOURNAL, 2014, 18 (04) : 459 - 468
  • [37] Evolution of Shear-Zone Structure in Undrained Ring-Shear Tests
    Agung, Muhammad Wafid
    Sassa, Kyoji
    Fukuoka, Hiroshi
    Wang, Gonghui
    LANDSLIDES, 2004, 1 (02) : 101 - 112
  • [38] Shear behavior of waste rock materials in drained and undrained ring shear tests
    Sueng Won Jeong
    Sung-Sik Park
    Hiroshi Fukuoka
    Geosciences Journal, 2014, 18 : 459 - 468
  • [39] Evolution of Shear-Zone Structure in Undrained Ring-Shear Tests
    Muhammad Wafid Agung
    Kyoji Sassa
    Hiroshi Fukuoka
    Gonghui Wang
    Landslides, 2004, 1 : 101 - 112
  • [40] Effect Of Boundary Conditions On Shear Banding In True Triaxial Tests On Sand
    Lade, P. V.
    Wang, Q.
    GEOTECHNICAL ENGINEERING, 2011, 42 (04): : 19 - 25