Nonlinear Analysis of Piles and Pile Groups in Inhomogeneous Soil evaluated through Case Histories
Lead Research Organisation:
University of Bristol
Department Name: Civil Engineering
Abstract
Key to the analysis of pile groups is developing pile-to-pile interaction factors which is achieved by considering only two piles at a time within the group. Superposition is then employed to analyse the effect of all piles in the group on each other. This method acts as an alternative to a detailed numerical analysis in three dimensions that saves significant time and complexity to the design. This PhD will approach the problem from a combined empirical and theoretical basis. First, closed-form solutions will be developed using a variety of special functions of applied mathematics for the nonlinear axial response of single piles and corresponding interaction factors in different inhomogeneous soil profiles leading to "t-z" multipliers. Simplified, approximate solutions will be developed for the general case of inhomogeneous soil and compared against the exact, closed-form solutions. Single pile and pile group response under lateral and torsional loading will also be investigated leading to analogous "p-y" and "t-0" multipliers. Results will then be compared with more rigorous numerical solutions and evaluated against a database of pile load test results gathered from the literature and industry sources. The aim of this project is to minimise uncertainty in pile group analysis to provide cost and carbon savings. This effort is in line with UKCRIC objectives.
Organisations
Publications
Crispin J
(2020)
Theoretical "t-z" Curves for Piles in Radially Inhomogeneous Soil
in DFI Journal The Journal of the Deep Foundations Institute
Crispin J
(2021)
Analysis of Pile Foundations Subject to Static and Dynamic Loading
Crispin J
(2019)
Settlement of axially loaded pile groups in inhomogeneous soil
in DFI Journal - The Journal of the Deep Foundations Institute
Crispin J
(2018)
Winkler model for axially loaded piles in inhomogeneous soil
in Géotechnique Letters
Crispin J
(2021)
Geotechnical Aspects of Underground Construction in Soft Ground
García-Del-Amo D
(2023)
Local reports of climate change impacts in Sierra Nevada, Spain: sociodemographic and geographical patterns.
in Regional environmental change
Jamie Crispin
(2019)
Prediction of pile settlement using simplified models
in Proceedings of the XVII ECSMGE-2019
Mylonakis G
(2021)
Analysis of Pile Foundations Subject to Static and Dynamic Loading
VARDANEGA P
(2018)
Geodatabases to improve geotechnical design and modelling
in ce/papers
Voyagaki E
(2021)
The DINGO database of axial pile load tests for the UK: settlement prediction in fine-grained soils
in Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards
Studentship Projects
Project Reference | Relationship | Related To | Start | End | Student Name |
---|---|---|---|---|---|
EP/N509619/1 | 30/09/2016 | 29/09/2021 | |||
1939881 | Studentship | EP/N509619/1 | 30/09/2017 | 29/09/2021 | Jamie Crispin |