Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

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.

Originalspracheenglisch
TitelSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
Herausgeber (Verlag)SPIE
ISBN (elektronisch)9781510616929
DOIs
PublikationsstatusVeröffentlicht - 1 Jan 2018
VeranstaltungSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018 - Denver, USA / Vereinigte Staaten
Dauer: 5 Mär 20188 Mär 2018

Publikationsreihe

NameProceedings SPIE
Band10598

Konferenz

KonferenzSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
LandUSA / Vereinigte Staaten
OrtDenver
Zeitraum5/03/188/03/18

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

Schlagwörter

    ASJC Scopus subject areas

    • !!Electronic, Optical and Magnetic Materials
    • !!Condensed Matter Physics
    • !!Computer Science Applications
    • Angewandte Mathematik
    • !!Electrical and Electronic Engineering

    Dies zitieren

    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; Band 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; Band 10598).

    Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

    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, Bd. 10598, SPIE, Denver, USA / Vereinigte Staaten, 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).
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    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.",
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