Innovative strenghtening of road bridges with Iron-based shape Memory Alloys (Fe-SMA)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00352111" target="_blank" >RIV/68407700:21110/22:00352111 - isvavai.cz</a>

Výsledek na webu

<a href="https://eurostruct.org/eurostruct-2021/" target="_blank" >https://eurostruct.org/eurostruct-2021/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-030-91877-4_64" target="_blank" >10.1007/978-3-030-91877-4_64</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Innovative strenghtening of road bridges with Iron-based shape Memory Alloys (Fe-SMA)

Popis výsledku v původním jazyce

Bridge over Chodovsky stream is a composite structure made of filler-beam deck, erected in 2017 in Karlovy Vary (Czech Republic). Urgent need of re-pair works on the bridge arose due to excessive effects of creep and subse-quent deflection compromising the driving comfort. A bolted retrofit (BR) system was developed to apply pre-strained Fe-SMA prestressing bars. The shape memory effect (SME) of Fe-SMA was used for prestressing of the ret-rofit bars to increase the flexural resistance of the filler beam deck as well as to reduce the bridge static de-flection. After the Fe-SMA strengthening of Pe-trov bridge in May of 2019 (bridge was demolished in July of 2019), this is to the best of author’s knowledge second application of this kind of strengthening and first permanent application of Fe-SMA to the bridge struc-ture. Because of its novelty, the possi-bility for monitoring and evaluation of Fe-SMA-strengthening reliability on real bridge structure subjected to daily traffic is of great value. Wireless monitoring system was installed prior to the strengthening application. For the short-term measurements, the bridge was loaded with four 32-ton trucks before and after strengthening. The results of short- and long-term measurements show the effec-tivity and reliability of the Fe-SMA strengthening for current structures. The re-laxation of Fe-SMA is evaluated and the results are compared with preliminary laboratory testing of the same BR strengthening system.

Název v anglickém jazyce

Innovative strenghtening of road bridges with Iron-based shape Memory Alloys (Fe-SMA)

Popis výsledku anglicky

Bridge over Chodovsky stream is a composite structure made of filler-beam deck, erected in 2017 in Karlovy Vary (Czech Republic). Urgent need of re-pair works on the bridge arose due to excessive effects of creep and subse-quent deflection compromising the driving comfort. A bolted retrofit (BR) system was developed to apply pre-strained Fe-SMA prestressing bars. The shape memory effect (SME) of Fe-SMA was used for prestressing of the ret-rofit bars to increase the flexural resistance of the filler beam deck as well as to reduce the bridge static de-flection. After the Fe-SMA strengthening of Pe-trov bridge in May of 2019 (bridge was demolished in July of 2019), this is to the best of author’s knowledge second application of this kind of strengthening and first permanent application of Fe-SMA to the bridge struc-ture. Because of its novelty, the possi-bility for monitoring and evaluation of Fe-SMA-strengthening reliability on real bridge structure subjected to daily traffic is of great value. Wireless monitoring system was installed prior to the strengthening application. For the short-term measurements, the bridge was loaded with four 32-ton trucks before and after strengthening. The results of short- and long-term measurements show the effec-tivity and reliability of the Fe-SMA strengthening for current structures. The re-laxation of Fe-SMA is evaluated and the results are compared with preliminary laboratory testing of the same BR strengthening system.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/CK03000219" target="_blank" >CK03000219: Pokročilý cloudový systém pro monitoring mostních konstrukcí za pomoci optických vláken</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures

ISBN

9783030918767

ISSN

2366-2557

e-ISSN

—

Počet stran výsledku

9

Strana od-do

560-568

Název nakladatele

Springer Nature Switzerland AG

Místo vydání

Basel

Místo konání akce

Padova

Datum konání akce

29. 8. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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