Application of optical fiber grating sensor in gravity dam structure model test

Jian Hua Dong, He Ping Xie, Lin Zhang, Hong Hu Zhu, Jianhua Yin, Cheng Qiu Hu, Jian Ye Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)

Abstract

During the research of hydraulic structure model test, the displacement and strain of dam body and dam foundation are mainly measured by displacement transducers and foil resistance strain gauges on the model surface. For the internal deformation of model under overloading, it will be difficult to measure accurately with conventional monitoring instrument. For a structural model of gravity dam section, beside installing displacement transducers and foil resistance strain gauges on the surface, fiber grating sensors were installed in dam body and dam foundation so that the internal displacement of structural mode could be monitored during overloading. Comparison study shows that the displacements measured using the fiber grating sensor are in good agreement with those from displacement transducers. The test results reveal that the dam foundation overloading safety factor is 6.0, and the failure mechanism of dam foundation under overloading was obtained. The present study confirmed the feasibility of the application of fiber grating sensor in gravity dam structural model test.
Original languageChinese (Simplified)
Pages (from-to)41-46
Number of pages6
JournalSichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition)
Volume41
Issue number1
Publication statusPublished - 1 Jan 2009

Keywords

  • Internal deformation
  • Monitoring
  • Optical fibre grating sensor
  • Overloading method
  • Structure model

ASJC Scopus subject areas

  • Engineering(all)

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