Deployment of FBG Sensors in Static Load Test of Diaphragm Wall – Field Test

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F20%3A00344422" target="_blank" >RIV/68407700:21720/20:00344422 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5593/sgem2020/1.1/s02.056" target="_blank" >https://doi.org/10.5593/sgem2020/1.1/s02.056</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2020/1.1/s02.056" target="_blank" >10.5593/sgem2020/1.1/s02.056</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Deployment of FBG Sensors in Static Load Test of Diaphragm Wall – Field Test

Popis výsledku v původním jazyce

Fiber Bragg Grating (FBG) sensors are used worldwide in structural health monitoring as a highly effective strain sensing method. Compared to traditional strain sensing methods in geotechnics, such as measurement by extensometers, deformeters, or strain gauges, FBG technology is beneficial in many issues, such as small dimensions of the sensor, easy and fast installation, long-term stability, immunity to electromagnetic interference or possibility of having dozens of sensing points on a single measuring cable. One part of the D3 highway construction, connecting the capital city Prague with southern Bohemia, is Pohůrka tunnel in the suburbs of the city of České Budějovice. With regard to the geomorphology of the locality and directional and elevational design of the highway, the tunnel is designed to be cut and cover. It has two 995.5 m long tubes, guided in two opposing curves. Due to complicated geotechnical and hydrogeological conditions in combination with demanding construction, static load tests of selected individual lamellae of diaphragm walls designed as retaining, loadbearing as well as sealing structures of the cut and cover tunnel were planned. Two test lamellae were instrumented for the purpose of static load test by resistance strain gauges, as well as FBG sensors. After the load tests, the results from both measurement technologies were compared to each other. The differences between the values obtained from FBG sensors and the values from strain gauges are acceptable enough; both measuring technologies proved their suitability in static load test of a diaphragm walls.

Název v anglickém jazyce

Deployment of FBG Sensors in Static Load Test of Diaphragm Wall – Field Test

Popis výsledku anglicky

Fiber Bragg Grating (FBG) sensors are used worldwide in structural health monitoring as a highly effective strain sensing method. Compared to traditional strain sensing methods in geotechnics, such as measurement by extensometers, deformeters, or strain gauges, FBG technology is beneficial in many issues, such as small dimensions of the sensor, easy and fast installation, long-term stability, immunity to electromagnetic interference or possibility of having dozens of sensing points on a single measuring cable. One part of the D3 highway construction, connecting the capital city Prague with southern Bohemia, is Pohůrka tunnel in the suburbs of the city of České Budějovice. With regard to the geomorphology of the locality and directional and elevational design of the highway, the tunnel is designed to be cut and cover. It has two 995.5 m long tubes, guided in two opposing curves. Due to complicated geotechnical and hydrogeological conditions in combination with demanding construction, static load tests of selected individual lamellae of diaphragm walls designed as retaining, loadbearing as well as sealing structures of the cut and cover tunnel were planned. Two test lamellae were instrumented for the purpose of static load test by resistance strain gauges, as well as FBG sensors. After the load tests, the results from both measurement technologies were compared to each other. The differences between the values obtained from FBG sensors and the values from strain gauges are acceptable enough; both measuring technologies proved their suitability in static load test of a diaphragm walls.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/LO1605" target="_blank" >LO1605: Univerzitní centrum energeticky efektivních budov – Fáze udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

20th International Multidisciplinary Scientific Geoconference SGEM 2020

ISBN

978-619-7603-04-0

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

449-456

Název nakladatele

International Multidisciplinary Scientific GeoConference SGEM

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

16. 8. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—