Tests on Model Pile Groups in Soft and Stiff Clay

Géotechnique ◽  
1970 ◽  
Vol 20 (1) ◽  
pp. 94-96 ◽  
Author(s):  
L. Barden ◽  
M. F. Monckton
Keyword(s):  
Pile Groups ◽  
Model Pile ◽  
Stiff Clay

scholarly journals An Experimental Study on Pile Spacing Effects under Lateral Loading in Sand

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Mahdy Khari ◽  
Khairul Anuar Kassim ◽  
Azlan Adnan
Keyword(s):  
Pile Group ◽  
Experimental Investigations ◽  
Pile Groups ◽  
Dense Sand ◽  
Spacing Effects ◽  
Pile Diameter ◽  
Lateral Resistance ◽  
Model Pile ◽  
Pile Interaction ◽  
Subgrade Modulus

Grouped and single pile behavior differs owing to the impacts of the pile-to-pile interaction. Ultimate lateral resistance and lateral subgrade modulus within a pile group are known as the key parameters in the soil-pile interaction phenomenon. In this study, a series of experimental investigation was carried out on single and group pile subjected to monotonic lateral loadings. Experimental investigations were conducted on twelve model pile groups of configurations 1 × 2, 1 × 3, 2 × 2, 3 × 3, and 3 × 2 for embedded length-to-diameter ratiol/d= 32 into loose and dense sand, spacing from 3 to 6 pile diameter, in parallel and series arrangement. The tests were performed in dry sand from Johor Bahru, Malaysia. To reconstruct the sand samples, the new designed apparatus, Mobile Pluviator, was adopted. The ultimate lateral load is increased 53% in increasing ofs/dfrom 3 to 6 owing to effects of sand relative density. An increasing of the number of piles in-group decreases the group efficiency owing to the increasing of overlapped stress zones and active wedges. A ratio ofs/dmore than6dis large enough to eliminate the pile-to-pile interaction and the group effects. It may be more in the loose sand.

The Bearing Capacity of Rigid Piles Under Inclined Loads in Sand. III: Pile Groups

1973 ◽  
Vol 10 (3) ◽  
pp. 428-438 ◽  
Author(s):  
G. G. Meyerhof ◽  
Gopal Ranjan
Keyword(s):  
Test Results ◽  
Ultimate Capacity ◽  
Pile Groups ◽  
Free Standing ◽  
Model Pile ◽  
Inclined Loads ◽  
Pile Cap ◽  
Present Part ◽  
Loading Tests ◽  
Batter Piles

Following Part I on vertical piles and Part II on inclined piles the present Part III deals with the general principles for estimating ultimate capacity of a pile bent under inclined load. The results of loading tests on two model pile bents with depth/diameter ratios of 13 and 23 for free standing bents and 15 and 25 for piled bents are presented. Test results on free standing and piled bents are reported in compact and dense states of packing of sand. Bents with vertical and batter piles have been tested under inclinations of load varying from vertical to horizontal.The experimental results are discussed and conclusions regarding the behavior of free standing and piled bents under inclination of load, type of bent, and pile cap are drawn.

Bearing capacity of flexible piles under eccentric and inclined loads in layered soil

1991 ◽  
Vol 28 (6) ◽  
pp. 909-917 ◽  
Author(s):  
A. S. Yalcin ◽  
G. G. Meyerhof
Keyword(s):  
Bearing Capacity ◽  
Pile Group ◽  
Layered Soil ◽  
Pile Groups ◽  
Eccentric Load ◽  
Pile Capacity ◽  
Model Pile ◽  
Inclined Loads ◽  
Experimental Values ◽  
Flexible Model

The bearing capacity of flexible model piles and small pile groups under axial, lateral, and various combinations of eccentric and inclined loads in layered soil consisting of clay overlying sand is investigated. Ultimate pile capacity is found to depend on the eccentricity and inclination of the load and, more significantly, on the ratio of the upper layer thickness to pile embedment. Theoretical estimates based on the concept of effective pile embedment ratio and expressed in terms of equivalent rigid piles agree reasonably well with the experimental values. The behaviour of 2 × 2 flexible model pile groups is observed to be similar to that of single piles. Key words: bearing capacity, piles, flexible pile, pile group, layered soil, sand, clay, eccentric load, inclined load, model pile test.

scholarly journals LOAD-SETTLEMENT BEHAVIOUR OF MODEL PILE GROUPS IN SAND UNDER VERTICAL LOAD

2017 ◽  
Vol 23 (8) ◽  
pp. 1148-1163 ◽  
Author(s):  
Mauricio Martines SALES ◽  
Monica PREZZI ◽  
Rodrigo SALGADO ◽  
Yoon Seok CHOI ◽  
Jintae LEE
Keyword(s):  
Pile Group ◽  
Single Pile ◽  
Load Testing ◽  
Driven Piles ◽  
Pile Groups ◽  
Pile Installation ◽  
Model Pile ◽  
Group Configuration ◽  
Settlement Behaviour ◽  
Good Agreement

Model pile load testing is effective to study the load-settlement behaviour of pile foundations given the con­trolled environment in which the testing is done. This paper reports a testing program in a large calibration chamber involving individual piles and pile groups installed in sand samples of three different densities. Tests on both nondis­placement and driven piles are evaluated to assess the influence of the pile installation process on pile load-settlement response. A method is proposed to predict the load-settlement response of a pile group based on the response of a single pile. The method is shown to produce estimates that are in good agreement with measurements. The influence of pile group configuration, pile spacing, soil density and method of pile installation is discussed.

Comparing the Response of Static Loading Tests on Two Model Pile Groups in Soft Clay

2017 ◽  
Vol 36 (1) ◽  
pp. 13-26
Author(s):  
V. H. L. Bach ◽  
H. M. Nguyen ◽  
A. J. Puppala ◽  
C. M. Nguyen ◽  
U. D. Patil
Keyword(s):  
Static Loading ◽  
Soft Clay ◽  
Pile Groups ◽  
Model Pile ◽  
Loading Tests
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