A model scale study of single vertical pile groups under general planar loads
A model scale study of single vertical pile groups under general planar loads
An experimental study of the problem of vertical single piles and vertical pile groups subjected to general planar loads has been carried out. The pile models, machined from Aluminium tube and equipped with strain gauged load cells, were 0.476 in. diameter. Two different pile lengths of 14.28 in. and 23.8 in., provided pile length to diameter ratio of 30 to 50. Single piles and groups of 4 and 9 piles car: investigated at different spacings, S/D = 2.5 and 5. The soil used ~as Kaolin. Driving and loading-rigs for installing and test loading the piles were designed and manufactured.The following is investigated experimentally,(a) The validity of analytical solutions, based on linear elastic theory, for analysing pile-soil systems.(b) The distribution of axial loads and bending moments along the piles in the group, due to applied vertical and horizontal loads and moments.(c) The distribution of axial forces and bending moments between the piles in each group and on the pile cap due to the general eccentric planar loads.22224ii(d) Determination of the working load stiffness matrix of both single piles and groups of piles from which the vertical and horizontal displacement ratios and the rotation ratio can be calculated.(e) Assessment of the mean soil shear modulus and its correlation with the undrained cohesive strength of the soil. (f) The effect of pile installation on the adjacent soil. (g) Assessment of the reinforcing effect of existing piles on others whilst they were being installed in order to shed some light on the problem of pile group interaction during installation and soil heave effects.(h) The interaction effect resulting from. loading one pile of a group after the others were in position.(i) A study of the drained ultimate load capacity of the individual piles.Additionally a numerical solution of the problem of laterally loaded single piles was completed using transfer matrix technique
University of Southampton
1976
Abdrabbo, Fathi Mohamed
(1976)
A model scale study of single vertical pile groups under general planar loads.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
An experimental study of the problem of vertical single piles and vertical pile groups subjected to general planar loads has been carried out. The pile models, machined from Aluminium tube and equipped with strain gauged load cells, were 0.476 in. diameter. Two different pile lengths of 14.28 in. and 23.8 in., provided pile length to diameter ratio of 30 to 50. Single piles and groups of 4 and 9 piles car: investigated at different spacings, S/D = 2.5 and 5. The soil used ~as Kaolin. Driving and loading-rigs for installing and test loading the piles were designed and manufactured.The following is investigated experimentally,(a) The validity of analytical solutions, based on linear elastic theory, for analysing pile-soil systems.(b) The distribution of axial loads and bending moments along the piles in the group, due to applied vertical and horizontal loads and moments.(c) The distribution of axial forces and bending moments between the piles in each group and on the pile cap due to the general eccentric planar loads.22224ii(d) Determination of the working load stiffness matrix of both single piles and groups of piles from which the vertical and horizontal displacement ratios and the rotation ratio can be calculated.(e) Assessment of the mean soil shear modulus and its correlation with the undrained cohesive strength of the soil. (f) The effect of pile installation on the adjacent soil. (g) Assessment of the reinforcing effect of existing piles on others whilst they were being installed in order to shed some light on the problem of pile group interaction during installation and soil heave effects.(h) The interaction effect resulting from. loading one pile of a group after the others were in position.(i) A study of the drained ultimate load capacity of the individual piles.Additionally a numerical solution of the problem of laterally loaded single piles was completed using transfer matrix technique
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Published date: 1976
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Local EPrints ID: 462297
URI: http://eprints.soton.ac.uk/id/eprint/462297
PURE UUID: 0f088f02-12a5-47c5-87ae-f6173fd0f7c4
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Date deposited: 04 Jul 2022 19:05
Last modified: 04 Jul 2022 19:05
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Author:
Fathi Mohamed Abdrabbo
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