Analysis of Axial Loading of Pile Groups in Multilayered Elastic Soil

2016 ◽  
Vol 16 (2) ◽  
pp. 04015063 ◽  
Author(s):  
Faraz S. Tehrani ◽  
Rodrigo Salgado ◽  
Monica Prezzi
Keyword(s):  
Axial Loading ◽  
Pile Groups ◽  
Elastic Soil

Analysis of laterally loaded pile groups in multilayered elastic soil

2014 ◽  
Vol 62 ◽  
pp. 136-153 ◽  
Author(s):  
R. Salgado ◽  
F.S. Tehrani ◽  
M. Prezzi
Keyword(s):  
Pile Groups ◽  
Laterally Loaded Pile ◽  
Laterally Loaded ◽  
Elastic Soil

scholarly journals Experimental Investigation on Efficiency Factor of Pile Groups Regarding Distance of Piles

2019 ◽  
Vol 5 (8) ◽  
pp. 1812-1819
Author(s):  
Mojtaba Pashayan ◽  
Gholam Moradi
Keyword(s):  
Axial Loading ◽  
Pile Group ◽  
Group Behavior ◽  
Efficiency Factor ◽  
Diameter Ratio ◽  
Efficiency Coefficient ◽  
Continuous Change ◽  
Pile Groups ◽  
Shaft Resistance ◽  
The Impact

There are a lot of the parameters which affect pile group behavior in soil. One of these factors is the distance of piles from each other. The impact of distance on pile groups in sand has been investigated through some researches, whereas most of them have not represented an exact estimation according to the continuous change of the distance in sand. Moreover, most of previous investigations have considered two piles as a perfect group. Since two-pile group has the least interaction effect among piles, it cannot suitably demonstrate the influence of spacing. In this lecture, several 4-pile groups modeled with different spacing were subjected to axial loading in laboratory. The pile groups were free-head with length to diameter ratio of 13.5. The piles are designed in a way which the shaft resistance of piles can be completely mobilized through the test. Then, the bearing capacities of pile groups are measured and compared with the single pile's resistance in order to calculate the efficiency coefficient of the groups. It is revealed that the distance is noticeably effective in efficiency factor and this effectiveness, non-linearly decreases by increase of spacing. The results show that the efficiency coefficient is changing between almost 1 and 1.4.

scholarly journals Assessing the Effects of Length, Slope and Distance between Piles on the Bearing Capacity of a Pile Group under Axial Loading in Granular Soil

2017 ◽  
Vol 7 (5) ◽  
pp. 1894-1899
Author(s):  
A. Firoozfar ◽  
A. Rostami ◽  
H. Ghaderi ◽  
H. Zamani ◽  
A. Rostamkhani
Keyword(s):  
Bearing Capacity ◽  
Axial Loading ◽  
Pile Group ◽  
Granular Soils ◽  
Deep Foundations ◽  
Pile Groups ◽  
Finite Element Software ◽  
Bedrock Depth ◽  
Exact Effect ◽  
Technical Capacity

Piles are usually made of steel, concrete, reinforced concrete or wood, used to enhance the ground’s bearing capacity in order to enable the construction of deep foundations, also called pile foundations. However, the exact effect of the complex interaction between the piles and the surrounding soil has not adequately been investigated yet. Considering the increased application of the technique recently, further analysis is essential for achieving the highest economic and technical capacity. Using fewer piles or shorter piles and allowing greater distances between pile groups, results to reduced construction. However, other restrictions such as high groundwater level, bedrock depth and the limited size of the foundation are also to be considered. The issue of optimal pile layout is further investigated in the current paper employing Plaxis, a finite element software, for modeling purposes and considering axial loadings in granular soils. Results are shown and further discussed.

scholarly journals Pile groups under axial loading: an appraisal of simplified non-linear prediction models

Géotechnique ◽  
2019 ◽  
Vol 69 (7) ◽  
pp. 565-579 ◽  
Author(s):  
Brian B. Sheil ◽  
Bryan A. McCabe ◽  
Emilios M. Comodromos ◽  
Barry M. Lehane
Keyword(s):  
Linear Prediction ◽  
Prediction Models ◽  
Axial Loading ◽  
Pile Groups ◽  
Non Linear
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