Cyclic Axial Loading of Drilled Shafts in Cohesive Soil

1994 ◽  
Vol 120 (9) ◽  
pp. 1481-1497 ◽  
Author(s):  
Kevin J. McManus ◽  
Fred H. Kulhawy
Keyword(s):  
Axial Loading ◽  
Cohesive Soil ◽  
Drilled Shafts

Lateral Response of Drilled Shafts in A Moving Cohesive Soil

2020 ◽  
Vol 18 (7) ◽  
pp. 735-742
Author(s):  
Mohammad M. Yamin ◽  
Mousa F. Attom ◽  
Zahid Khan
Keyword(s):  
Cohesive Soil ◽  
Drilled Shafts ◽  
Lateral Response

scholarly journals Behaviour of Single and Group Helical Piles in Sands from Model Experiments

2019 ◽  
Vol 278 ◽  
pp. 03007
Author(s):  
Jongho Bak ◽  
Byung-hyun Choi ◽  
Junwon Lee ◽  
Jonghwan Bae ◽  
Kicheol Lee ◽  
...  
Keyword(s):  
Rotation Speed ◽  
Axial Loading ◽  
Complete Removal ◽  
Drilled Shafts ◽  
Load Test ◽  
Oil Sand ◽  
Driven Piles ◽  
Pile Installation ◽  
Helical Piles ◽  
Pile Load Tests

Mainly used foundations of oil sand plants are drilled shafts or driven piles. As environmental regulations become increasingly strict, complete removal of the foundation is becoming more important during the step of plant dismantling. However, it is difficult to remove completely drilled shafts or driven piles which are deeply installed to obtain more bearing capacity. Helical piles can be easily removed and recycled after use. This study analyses the behaviour of single and group helical piles in sands. For single helical piles, pile load tests of helical piles were conducted varying helix spacing, rotation speed and weight of axial loading during pile installation. The single pile tests determined the optimal helix spacing, rotation speed, weight of axial loading during pile installation. And then, pile load test of group helical piles was performed varying pile spacing from the centre place of upper connector based on the optimal installation conditions.

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