Monitoring of existing long span bridges – results, numerical simulation, mathematical models for long term prediction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00327277" target="_blank" >RIV/68407700:21110/18:00327277 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Monitoring of existing long span bridges – results, numerical simulation, mathematical models for long term prediction

Popis výsledku v původním jazyce

Apart from durability, the most important factor in the whole life design of reinforced and, in particular, prestressed concrete bridges, is the Service Limit State. From this point of view, prestressed concrete bridges are very sensitive to long-term increase of deflections. A survey of many bridges monitored in various countries showed that all of them have experienced similar deflection histories. The intention of the paper is to describe methods and mathematical models which should be used for reliable prediction of long-term behaviour of prestressed concrete bridges. The comparisons between results of numerical simulations and measurement data will be also mentioned. Long-term structure deformations (deflections and rotations) and stress distribution are extremelysensitive due to prestressing losses, because the final value is a difference of great numbers (the effectof dead load and the opposite effect of equivalent loading due to prestressing, which depends on the real and actual value of prestressing force in each point of the structure). The goal of the paper is also description of mathematical models for prestressing losses affected by steel relaxation and concrete creep.

Název v anglickém jazyce

Monitoring of existing long span bridges – results, numerical simulation, mathematical models for long term prediction

Popis výsledku anglicky

Apart from durability, the most important factor in the whole life design of reinforced and, in particular, prestressed concrete bridges, is the Service Limit State. From this point of view, prestressed concrete bridges are very sensitive to long-term increase of deflections. A survey of many bridges monitored in various countries showed that all of them have experienced similar deflection histories. The intention of the paper is to describe methods and mathematical models which should be used for reliable prediction of long-term behaviour of prestressed concrete bridges. The comparisons between results of numerical simulations and measurement data will be also mentioned. Long-term structure deformations (deflections and rotations) and stress distribution are extremelysensitive due to prestressing losses, because the final value is a difference of great numbers (the effectof dead load and the opposite effect of equivalent loading due to prestressing, which depends on the real and actual value of prestressing force in each point of the structure). The goal of the paper is also description of mathematical models for prestressing losses affected by steel relaxation and concrete creep.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Fib Congres 2018, Better - Smarter - Stronger (Full papers)

ISBN

978-1-877040-14-6

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

3298-3305

Název nakladatele

fib - fédération internationale du béton

Místo vydání

Lausanne

Místo konání akce

Melbourne

Datum konání akce

7. 10. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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