Long-term monitoring for soil nails and anchors based on FBG sensing technique

H. F. Pei, Jianhua Yin, C. Y. Hong, H. H. Zhu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

There are many limitations of conventional techniques for slope monitoring including low accuracy, poor durability and difficulty of integration. This paper presents a new type of soil nails monitoring system basing on fibre Bragg grating (FBG) technique. In this study, a series of FBG sensors were installed onto the longitudinal surface (at specific interval) of soil nails and anchors for measuring the strain and temperature variation. Basing on the measured strain, the mechanical behaviour of soil nails can be evaluated, so that the slope stability can be further assessed. In addition, the advantages and limitations of the FBG based sensing technique in long term monitoring for soil nails are also discussed.
Original languageEnglish
Title of host publicationProceedings of the 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010
Pages16-21
Number of pages6
VolumeSUPPL.
Publication statusPublished - 1 Dec 2010
Event2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 - Hong Kong, Hong Kong
Duration: 1 Jun 20102 Jun 2010

Conference

Conference2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010
CountryHong Kong
CityHong Kong
Period1/06/102/06/10

Keywords

  • FBG
  • Long-term monitoring
  • Slope
  • Soil nail
  • Strain and temperature

ASJC Scopus subject areas

  • Building and Construction
  • Environmental Science(all)

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