Pile Skin Friction in Sands from Constant Normal Stiffness Tests

1995 ◽  
Vol 18 (3) ◽  
pp. 350 ◽  
Author(s):  
HJ Pincus ◽  
JT Tabucanon ◽  
DW Airey ◽  
HG Poulos
Keyword(s):  
Skin Friction ◽  
Normal Stiffness ◽  
Constant Normal Stiffness

Effect of Density on Skin Friction Response of Piles Embedded in Sand by Simple Shear Interface Tests

2020 ◽  
Author(s):  
Kazem Fakharian ◽  
Nasrin Vafaei
Keyword(s):  
Shear Stress ◽  
Relative Density ◽  
Skin Friction ◽  
Simple Shear ◽  
Normal Load ◽  
Peak Stress ◽  
Normal Stiffness ◽  
Initial Relative Density ◽  
Sand Pile ◽  
Constant Normal Stiffness

This study focuses on a particular phenomenon related to the reduction in sand-pile skin friction with initial relative density increment from medium to dense. Frictional behaviour of sand-pile interface is simulated using a simple shear-type device capable of inducing constant normal stiffness condition. Sand-pile interface sliding and soil deformation components are distinguished quantitatively. The effects of initial relative density of sand, initial normal load, and constant normal stiffness are examined on the magnitude of the pile skin friction and shear displacement at failure. Results indicate that the magnitude of the mobilized shear stress at failure significantly relies on the shear stress state concerning the inflexion point on volume change graph, which is equivalent to the position of peak stress ratio. Good correlations exist between results of this study and field data of several heavily instrumented piles embedded in dense to very dense sands. The presented procedure is a useful framework for establishing more accurate skin friction calculation methodologies and t-z curve developments of axially loaded piles.

scholarly journals A shear strength model for idealised infilled joints under constant normal stiffness

Géotechnique ◽  
2005 ◽  
Vol 55 (3) ◽  
pp. 215-226 ◽  
Author(s):  
B. Indraratna ◽  
H. S. Welideniya ◽  
E. T. Brown
Keyword(s):  
Shear Strength ◽  
Strength Model ◽  
Normal Stiffness ◽  
Constant Normal Stiffness

Experimental Study on Shear Behavior of Bolted Cement Mortar Blocks under Constant Normal Stiffness

2019 ◽  
Vol 23 (8) ◽  
pp. 3724-3734 ◽  
Author(s):  
Bo Meng ◽  
Hongwen Jing ◽  
Shengqi Yang ◽  
Tao Cui ◽  
Biao Li
Keyword(s):  
Experimental Study ◽  
Cement Mortar ◽  
Shear Behavior ◽  
Normal Stiffness ◽  
Constant Normal Stiffness
Sign in / Sign up

Export Citation Format

Share Document