Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

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

Fingerprint

Nails
Fiber Optics
Fiber optics
Soil
fiber optics
soils
Slope
Stabilization
Sensing
stabilization
Monitoring
slopes
Soils
load tests
Strain Measurement
Rigid Body Motion
excavation
strain measurement
rigid structures
Engineering Application

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

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

Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing. / Monsberger, Christoph; Lienhart, Werner; Hirschmüller, Sebastian; Marte, Roman.

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018. SPIE, 2018. 1059835 (Proceedings SPIE; Vol. 10598).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

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, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018, Denver, United States, 5/03/18. https://doi.org/10.1117/12.2296674
Monsberger C, Lienhart W, Hirschmüller S, Marte R. Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018. SPIE. 2018. 1059835. (Proceedings SPIE). https://doi.org/10.1117/12.2296674
Monsberger, Christoph ; Lienhart, Werner ; Hirschmüller, Sebastian ; Marte, Roman. / Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing. Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018. SPIE, 2018. (Proceedings SPIE).
@inproceedings{90a7090950a94fdc8a719252e4540d93,
title = "Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing",
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.",
keywords = "displacement sensing, Distributed fiber optic sensing, foundation engineering, pull-out test, slope stabilization, soil nailing system, strain distribution",
author = "Christoph Monsberger and Werner Lienhart and Sebastian Hirschm{\"u}ller and Roman Marte",
year = "2018",
month = "1",
day = "1",
doi = "10.1117/12.2296674",
language = "English",
series = "Proceedings SPIE",
publisher = "SPIE",
booktitle = "Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018",
address = "United States",

}

TY - GEN

T1 - Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing

AU - Monsberger, Christoph

AU - Lienhart, Werner

AU - Hirschmüller, Sebastian

AU - Marte, Roman

PY - 2018/1/1

Y1 - 2018/1/1

N2 - 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.

AB - 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.

KW - displacement sensing

KW - Distributed fiber optic sensing

KW - foundation engineering

KW - pull-out test

KW - slope stabilization

KW - soil nailing system

KW - strain distribution

UR - http://www.scopus.com/inward/record.url?scp=85049564068&partnerID=8YFLogxK

U2 - 10.1117/12.2296674

DO - 10.1117/12.2296674

M3 - Conference contribution

T3 - Proceedings SPIE

BT - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018

PB - SPIE

ER -