An Experimental Study of the Load Distribution in Pile Groups in Sand by Y. O. Beredugo (vol. III., no. 3: 145–66)

1967 ◽  
Vol 4 (3) ◽  
pp. 353-356 ◽  
Author(s):  
M B Lo
Keyword(s):  
Experimental Study ◽  
Load Distribution ◽  
Pile Groups

An Experimental Study of the Load Distribution in Pile Groups in Sand

1966 ◽  
Vol 3 (3) ◽  
pp. 145-166 ◽  
Author(s):  
Y O Beredugo
Keyword(s):  
Experimental Study ◽  
Group Size ◽  
Load Distribution ◽  
Model Tests ◽  
Soil Density ◽  
Pile Groups ◽  
Total Group ◽  
Equal Share ◽  
Initial Soil ◽  
Predominant Factor

A series of model tests was carried out to determine the distribution of load among piles grouped in sand. The effects of initial sand density, pile roughness, driving order, spacing, and the position of the pile in the group on the load distribution were studied. The results showed that, for small loads, the load distribution was random. As the load increased, the distribution was governed mainly by the driving order, but as the ultimate group load was approached the effect of driving order diminished and the position of the pile in the group became the predominant factor on which the load distribution depended.In general the centre (or centre core) piles of a group carried the greatest proportion of the load at the ultimate group load while the corner piles carried the least proportion. Beyond the ultimate group load, there was a redistribution of the load in such a way that all piles carried an approximately equal share of the load irrespective of their driving order and position. As the spacing was increased, the distribution tended to become independent of both driving order and pile position, and all piles carried an approximately equal share of the load. Initial soil density, pile roughness, and group size were found to affect the total group loads, but had no effect on the load distribution.

scholarly journals Numerical modelling of perimeter pile groups in clay

2013 ◽  
Vol 50 (3) ◽  
pp. 250-258 ◽  
Author(s):  
A.V. Rose ◽  
R.N. Taylor ◽  
M.H. El Naggar
Keyword(s):  
Load Distribution ◽  
Load Capacity ◽  
Relative Effectiveness ◽  
Pile Group ◽  
Block Type ◽  
Pile Groups ◽  
Total Load ◽  
Group Behaviour ◽  
Pile Interaction ◽  
Spacing Length

The load distribution among piles in a group varies such that the inner piles often carry a smaller share of the total load compared to the outer piles, which is a result of increased soil–pile interaction. The main objective of this paper is to establish the relative effectiveness of pile groups with no inner piles (perimeter group), when compared to the more common grid configuration. The numerical investigation utilized the finite element programme ABAQUS and considered a range of variables that affect pile group behaviour including number of piles, pile spacing, length/diameter ratio, and soil strength. It was demonstrated that a complete grid group is less efficient than a perimeter group, where efficiency is defined as the load capacity of the whole group expressed as a ratio of the number of piles in the group multiplied by the load capacity of a single isolated pile. Efficiencies close to unity were observed for some perimeter groups. Perimeter groups also showed that a “block” type group failure could occur, where piles were placed at a spacing of less than 2.0 pile diameters,d, centre-to-centre. This often, but not always, led to a reduction in the efficiency of the pile group.

P081 Load distribution across the knee relationed to torsional deformity. Experimental study

1998 ◽  
Vol 31 ◽  
pp. 95
Author(s):  
A. Molina ◽  
J. Ballester ◽  
P. Alvarez ◽  
M.A. Ribau ◽  
M. Kanj
Keyword(s):  
Experimental Study ◽  
Load Distribution ◽  
Torsional Deformity

scholarly journals An Experimental Study on Large Lateral Deformation Behavior of Pile Groups in Ground of Coahesive Soil.

2000 ◽  
pp. 223-233
Author(s):  
Isamu ONO ◽  
Kiyoomi YAMADA ◽  
Yukio KIKUTA ◽  
Sei MATSUURA ◽  
Katsuya OKADA
Keyword(s):  
Experimental Study ◽  
Deformation Behavior ◽  
Lateral Deformation ◽  
Pile Groups

The Effect of Misalignment on the Fatigue Life of Tapered Roller Bearings

1972 ◽  
Vol 94 (2) ◽  
pp. 181-186 ◽  
Author(s):  
H. Zantopulos
Keyword(s):  
Experimental Study ◽  
Fatigue Life ◽  
Test Data ◽  
Load Distribution ◽  
Roller Bearings ◽  
Bearing Life ◽  
Life Tests ◽  
Tapered Roller ◽  
Tapered Roller Bearings ◽  
Sufficient Test

A comprehensive analytical and experimental study of the effect of misalignment on load distribution and fatigue life of tapered roller bearings is presented. Included are the effects of truncation of crowned rollers and edge of contact stresses. Bearing life tests, involving approximately 500 bearings, were run at various loads and misalignments to obtain sufficient test data to substantiate the analytical results.

Analytic and Experimental Study of the Load Distribution on Spline Joints Length Considering the Contact Rigidity of the Bearing Surfaces

2012 ◽  
Vol 162 ◽  
pp. 74-83 ◽  
Author(s):  
Dan Mărgineanu ◽  
E. Mărgineanu ◽  
E.S. Zăbavă ◽  
A. M. Fârtă
Keyword(s):  
Experimental Study ◽  
Mechanical System ◽  
Elastic Properties ◽  
Load Distribution ◽  
Degrees Of Freedom ◽  
Surface Profile ◽  
Contact Rigidity ◽  
Contact Points ◽  
Actual Load ◽  
Contact Surfaces

The spline joints transmit torque from shafts to rotors by multiple contact surfaces. The joint's mechanical system is, therefore, undetermined, i.e. the number of contact points is much larger than the number of restricted degrees of freedom. Thus, the actual load distribution is greatly influenced by the joints elements elastic properties and their geometrical errors and surface profile. In this paper, an analytical and experimental study for the load distribution on the in joints length caused by the finite rigidity of the joints elements is presented.

scholarly journals Experimental Study for Load Distribution Characteristics of Existing and Reinforcing Piles

2014 ◽  
Vol 15 (12) ◽  
pp. 87-95 ◽  
Author(s):  
Seonghun Cho ◽  
Kisun Choi ◽  
Samdeok Cho ◽  
Youngchan You ◽  
Changho Choi
Keyword(s):  
Experimental Study ◽  
Load Distribution ◽  
Distribution Characteristics
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