Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles

This paper describes the method of identifying typical defects of bored cast-in-situ piles when instrumenting using Distributed Optical Fiber Strain Sensing (DOFSS). The DOFSS technology is based on Brillouin Optical Time Domain Analyses (BOTDA), which has the advantage of recording continuous strai...

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Main Authors: Mohamad, H., Tee, B.P., Ang, K.A., Chong, M.F.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.25880 /
Published: Penerbit UTM Press 2016
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988484586&doi=10.11113%2fjt.v78.9626&partnerID=40&md5=1ce29a4cfcd5774f3b71a5e59208dd96
http://eprints.utp.edu.my/25880/
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spelling utp-eprints.258802021-08-27T13:08:18Z Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles Mohamad, H. Tee, B.P. Ang, K.A. Chong, M.F. This paper describes the method of identifying typical defects of bored cast-in-situ piles when instrumenting using Distributed Optical Fiber Strain Sensing (DOFSS). The DOFSS technology is based on Brillouin Optical Time Domain Analyses (BOTDA), which has the advantage of recording continuous strain profile as opposed to the conventional discrete based sensors such as Vibrating Wire strain gauges. In pile instrumentation particularly, obtaining distributed strain profile is important when analysing the load-transfer and shaft friction of a pile, as well as detecting any anomalies in the strain regime. Features such as defective pile shaft necking, discontinuity of concrete, intrusion of foreign matter and improper toe formation due to contamination of concrete at base with soil particles, among others, may cause the pile to fail. In this study, a new technique of detecting such defects is proposed using DOFSS technology which can potentially supplement the existing non-destructive test (NDT) methods. Discussion on the performance of instrumented piles by means of maintained load test are also presented. © 2016 Penerbit UTM Press. All rights reserved. Penerbit UTM Press 2016 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988484586&doi=10.11113%2fjt.v78.9626&partnerID=40&md5=1ce29a4cfcd5774f3b71a5e59208dd96 Mohamad, H. and Tee, B.P. and Ang, K.A. and Chong, M.F. (2016) Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles. Jurnal Teknologi, 78 (8-5). pp. 75-82. http://eprints.utp.edu.my/25880/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description This paper describes the method of identifying typical defects of bored cast-in-situ piles when instrumenting using Distributed Optical Fiber Strain Sensing (DOFSS). The DOFSS technology is based on Brillouin Optical Time Domain Analyses (BOTDA), which has the advantage of recording continuous strain profile as opposed to the conventional discrete based sensors such as Vibrating Wire strain gauges. In pile instrumentation particularly, obtaining distributed strain profile is important when analysing the load-transfer and shaft friction of a pile, as well as detecting any anomalies in the strain regime. Features such as defective pile shaft necking, discontinuity of concrete, intrusion of foreign matter and improper toe formation due to contamination of concrete at base with soil particles, among others, may cause the pile to fail. In this study, a new technique of detecting such defects is proposed using DOFSS technology which can potentially supplement the existing non-destructive test (NDT) methods. Discussion on the performance of instrumented piles by means of maintained load test are also presented. © 2016 Penerbit UTM Press. All rights reserved.
format Article
author Mohamad, H.
Tee, B.P.
Ang, K.A.
Chong, M.F.
spellingShingle Mohamad, H.
Tee, B.P.
Ang, K.A.
Chong, M.F.
Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles
author_sort Mohamad, H.
title Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles
title_short Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles
title_full Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles
title_fullStr Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles
title_full_unstemmed Characterizing anomalies in distributed strain measurements of cast-in-situ bored piles
title_sort characterizing anomalies in distributed strain measurements of cast-in-situ bored piles
publisher Penerbit UTM Press
publishDate 2016
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988484586&doi=10.11113%2fjt.v78.9626&partnerID=40&md5=1ce29a4cfcd5774f3b71a5e59208dd96
http://eprints.utp.edu.my/25880/
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score 11.62408

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