Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Soil nailing systems are a common way to stabilize slopes and construction pits. Their design is usually based on the mechanical equilibrium of a rigid body motion and therefore, only tensile stresses are considered and accompanying forces like bending (shear stresses) in the soil nails are neglected. Continuous strain measurements along nails could verify this assumption, but may not be performed using conventional sensing technologies. This paper reports about monitoring of a soil nailed slope stabilization using distributed fiber optic sensing. Soil nails in different anchoring horizons were instrumented and autonomously monitored over several weeks, in which the construction pit was excavated continuously. After the excavation, the final load bearing capacity of one selected nail was determined within a classical geotechnical load test. In addition to the field measurements, the bending behavior of the instrumented nail system was analyzed under laboratory conditions. The presented studies demonstrate the high potential of distributed fiber optic sensing systems and their capability to extend traditional measurement methods in foundation engineering applications.

Original languageEnglish
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
PublisherSPIE
ISBN (Electronic)9781510616929
DOIs
Publication statusPublished - 1 Jan 2018
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018 - Denver, United States
Duration: 5 Mar 20188 Mar 2018

Publication series

NameProceedings SPIE
Volume10598

Conference

ConferenceSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
CountryUnited States
CityDenver
Period5/03/188/03/18

Keywords

  • displacement sensing
  • Distributed fiber optic sensing
  • foundation engineering
  • pull-out test
  • slope stabilization
  • soil nailing system
  • strain distribution

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing'. Together they form a unique fingerprint.

  • Cite this

    Monsberger, C., Lienhart, W., Hirschmüller, S., & Marte, R. (2018). Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018 [1059835] (Proceedings SPIE; Vol. 10598). SPIE. https://doi.org/10.1117/12.2296674