Soil Support Characterization in Slab-on-Grade Constructions with Fiber-Optic Distributed Strain Sensing

Eyal Levenberg, Assaf-Avraham Klar, Asmus Skar

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Abstract

This study offered a novel method for characterizing the soil support in slab-on-grade constructions such as rigid pavements and raft foundations. The method applies to slabs that are instrumented with fiber-optic cables for distributed strain sensing; it is based on analyzing the spatial profiles of slab bending strains generated by randomly applied surface loads. The concept was demonstrated for a synthetic case involving an infinite plate resting on a Pasternak support model. The method was shown to deliver non-destructive, non-disruptive, and load-independent quantitative information on the prevailing soil support. Therefore, it is deemed well suited for longterm health monitoring applications of slab-on-grade constructions. Such monitoring can help facility owners evaluate and intercept external events that undermine the integrity of the structure. In the long-term, continued monitoring of soil support can help the engineering community improve analysis approaches and design decisions concerning soil-structure interaction.
Original languageEnglish
Title of host publicationGeo-Congress 2020: Foundations, Soil Improvement, and Erosion
EditorsJames P. Hambleton, Roman Makhnenko, Aaron S. Budge
PublisherAmerican Society of Civil Engineers
Publication date2020
Pages370 - 378
ISBN (Electronic)9780784482780
DOIs
Publication statusPublished - 2020
EventGeo-Congress 2020 - Hyatt Regency Minneapolis, Minneapolis, United States
Duration: 25 Feb 202028 Feb 2020

Conference

ConferenceGeo-Congress 2020
LocationHyatt Regency Minneapolis
CountryUnited States
CityMinneapolis
Period25/02/202028/02/2020

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