Numerical simulation of long-term behaviour of long span prestressed concrete bridges

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00232853" target="_blank" >RIV/68407700:21110/15:00232853 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Numerical simulation of long-term behaviour of long span prestressed concrete bridges

Original language description

The design of structures is more and more directed towards the entire lifetime design with multiple concurrent objectives. 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. This phenomenon has paramount importance for serviceability, durability and long-time reliability of such bridges. Reliable prediction of bridge deflections during their construction as well as during their service life is of crucial importance for achieving good durability and long-term serviceability. Obviously, difficulty of predicting deflections is closely related to the properties of concrete (strength, elastic modulus, nonlinearity, creep, shrinkage, etc.), both initially and with time. The long-term deflection behaviour of long-span prestressed concrete box girder bridges has often deceived engineers monitoring the deflections. A survey of many bridges monitored in various countries showed that all of them have experienced similar deflection histories. It has frequently been experienced that the box girders of many prestressed concrete bridges deflected far more than predicted in design. The deflection evolution has often been counterintuitive, with slowly growing deflections in the early years, followed later by a rapid and excessive deflection growth. 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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JM - Structural engineering

OECD FORD branch

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Project

<a href="/en/project/TE01020168" target="_blank" >TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)</a><br>

Continuities

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

Publication year

2015

Confidentiality

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

Article name in the collection

CONCREEP-10 Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures

ISBN

978-0-7844-7934-6

ISSN

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e-ISSN

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Number of pages

1

Pages from-to

60

Publisher name

Vienna University Of Technology, Institute For Mechanics of Materials and Structures

Place of publication

Vienna

Event location

Vídeň

Event date

Sep 21, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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