Numerical simulation of a ground anchor pullout test monitored with fiber optic sensors

Fabris, Carla (author), Schweiger, Helmut F. (author), Pulko, Boštjan (author), Woschitz, Helmut (author), Račanský, Václav (author)

This paper presents a comprehensive study of the load transfer mechanism of a soil anchor during pullout test. The anchor was monitored with fiber optic sensors installed along the tendon and embedded in the grout, which enabled continuous measurements of strains with a spatial resolution of about 10 mm. The measured strain profile along the tendon indicates that the load is not transferred from the tendon to the grout at the same rate along the fixed length. Crack development was verified by measured peaks along the longitudinal strain profile. The in situ measurements were compared with results from finite-element simulations contributing to the interpretation of the in situ results. The load displacement curves and strain distributions obtained with the numerical simulations compare well with measurements. The constitutive model selected for the grout is capable of reproducing the crack development and the numerical simulations suggest that debonding occurred during the anchor pullout test.

• Language: English
• Keywords: civil engineering, numerical simulations, geotechnical engineering, ground anchors, pullout test, optical fiber sensors
• Work type: Scientific work
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Author Accepted Manuscript
• Year: 2020
• Number of pages: Str. 1-10
• Numbering: letn. 147, Št. 2/04020163 (1-10)
• PID: 20.500.12556/RUL-125095
• UDC: 624.1
• ISSN on article: 1090-0241
• DOI: 10.1061/(ASCE)GT.1943-5606.0002442
• COBISS.SI-ID: 40033795
• Publication date in RUL: 04.03.2021

Record is a part of a journal

• Title: Journal of geotechnical and geoenvironmental engineering
• Shortened title: J. geotech. geoenviron. eng.
• Publisher: American Society of Civil Engineers
• ISSN: 1090-0241
• COBISS.SI-ID: 17224453

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
• Licensing start date: 04.03.2021

Secondary language

• Language: Slovenian
• Keywords: gradbeništvo, geotehnika, numerične analize, geotehnična sidra, izvlečni preiskus, meritve z optičnimi vlakni

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: BI-AT/18-19-028
• Name: Analiza napetostnega in deformacijskega stanja prednapetih geotehničnih sider