Enhanced Stress Wave Analysis of Scaled Monopiles in Glacial Till at Cowden

Martin, S. C., Buckley, R. M. , McAdam, R. A. and Byrne, B. W. (2022) Enhanced Stress Wave Analysis of Scaled Monopiles in Glacial Till at Cowden. In: 11th International Conference on Stress Wave Theory and Design and Testing Methods for Deep Foundations (SW2022), Rotterdam, The Netherlands, 20-23 Sep 2022, (doi: 10.5281/zenodo.7151557)

Abstract

Conventional stress wave analysis for pile driving involves a subjective signal matching process using pile driving analyser (PDA) measurements. The PICASO (PIle Cyclic AnalySis: Oxford and Ørsted) research project provided an opportunity to collect high frequency strain measurements using optical fibre Bragg grating (FBG) sensors over the embedded length of the pile, in addition to conventional PDA data. This paper reports the application of a novel hybrid approach incorporating FBG data into the signal matching process, as developed by Buckley et al. (2020a), to an overconsolidated glacial till site in Cowden, Hull, UK. The additional information on stress wave propagation, obtained through FBG measurements, provides insights into the development of soil resistance to driving (SRD) in stiff clays. The results obtained using the new framework are compared to the resistance predicted using a widely-adopted empirical method.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Buckley, Dr Roisin
• Authors: Martin, S. C., Buckley, R. M., McAdam, R. A., and Byrne, B. W.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Copyright Holders: Copyright © 2022 The Authors
• First Published: First published in Proceedings of the 11th International Conference on Stress Wave Theory and Design and Testing Methods for Deep Foundations (SW2022)
• Publisher Policy: Reproduced under a Creative Commons License