Imperial College London
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DrStavroulaKontoe

Faculty of Engineering, Department of Civil and Environmental Engineering

Visiting Reader
 
 
 
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Contact

 

+44 (0)20 7594 5996stavroula.kontoe Website

 
 
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Location

 

535Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Buckley:2020:10.1061/(ASCE)GT.1943-5606.0002293,
author = {Buckley, R and McAdam, R and Byrne, B and Doherty, J and Jardine, R and Kontoe, S and Randolph, M},
doi = {10.1061/(ASCE)GT.1943-5606.0002293},
journal = {Journal of Geotechnical and Geoenvironmental Engineering},
pages = {1--15},
title = {Optimisation of impact pile driving using optical fibre Bragg grating measurements},
url = {http://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0002293},
volume = {146},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper reports the use of optical Fibre Bragg Grating (FBG) sensors to monitor the stress waves generated below ground during pile driving, combined with measurements using conventional pile driving analyzer (PDA) sensors mounted at the pile head. Fourteen tubular steel piles with a diameter of 508 mm and embedded length to diameter ratios of 6 to 20 were impact driven at an established chalk test site in Kent, UK. The pile shafts were instrumented with multiple FBG strain gauges and pile head PDA sensors, which monitored the piles’ responses under each hammer blow. A high frequency (5kHz) fibre optic interrogator allowed a previously unseen resolution of the stress wave propagation along the pile. Estimates of the base soil resistances to driving and distributions of shaft shear resistances were found through signal matching that compared time series of pile head PDA measurements and FBG strains measured below ground surface. Numerical solutions of the onedimensional wave equation were optimised by taking account of the data from multiple FBG gauges, leading to significant advantages that have potential for widespread application in cases where high resolution strain measurements are made.
AU  - Buckley,R
AU  - McAdam,R
AU  - Byrne,B
AU  - Doherty,J
AU  - Jardine,R
AU  - Kontoe,S
AU  - Randolph,M
DO  - 10.1061/(ASCE)GT.1943-5606.0002293
EP  - 15
PY  - 2020///
SN  - 0733-9410
SP  - 1
TI  - Optimisation of impact pile driving using optical fibre Bragg grating measurements
T2  - Journal of Geotechnical and Geoenvironmental Engineering
UR  - http://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0002293
UR  - https://ascelibrary.org/doi/10.1061/%28ASCE%29GT.1943-5606.0002293
UR  - http://hdl.handle.net/10044/1/77029
VL  - 146
ER  -
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