Results of Short-term Experiments with Monostrands in Saddles with Small Radii

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F18%3APU126332" target="_blank" >RIV/00216305:26110/18:PU126332 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.272.147" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/SSP.272.147</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.272.147" target="_blank" >10.4028/www.scientific.net/SSP.272.147</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Results of Short-term Experiments with Monostrands in Saddles with Small Radii

Popis výsledku v původním jazyce

When strengthening existing reinforced concrete structures, we can find many successful applications of post-tensioning. The method of substituted cable ducts is a very convenient especially in the case of strengthening existing reinforced concrete bridges whose load capacity can be increased up to 300 %. Strengthening of structures by post-tensioning is based on active influence of internal forces by prestressing force and radial forces that occur in places of bending the unbonded prestressing tendons. Thus, the forces which acts directly on structure in the anchorage areas and in the locations where the prestressing tendons change their trajectory (in saddles) are considered as the effects of prestressing. Saddles are one of the most important structural details of the additional prestressing system. For the purpose of closer examination of the action of monostrand in steel saddles with different radii of curvature, the methodology of experiment was developed and the concrete test panel in which holes for sensors and substituted cable ducts for monostrand are prepared was created. The concrete test panel enables change of the radius of curvature and was designed for analysis of monostrands in saddles with radii of 600, 1000 and 1500 mm. The aim of short-term experiments with monostrands is to determine suitable application of post-tensioning of existing structures with prestressing tendons in HDPE sheaths in saddles with small radii of curvature.

Název v anglickém jazyce

Results of Short-term Experiments with Monostrands in Saddles with Small Radii

Popis výsledku anglicky

When strengthening existing reinforced concrete structures, we can find many successful applications of post-tensioning. The method of substituted cable ducts is a very convenient especially in the case of strengthening existing reinforced concrete bridges whose load capacity can be increased up to 300 %. Strengthening of structures by post-tensioning is based on active influence of internal forces by prestressing force and radial forces that occur in places of bending the unbonded prestressing tendons. Thus, the forces which acts directly on structure in the anchorage areas and in the locations where the prestressing tendons change their trajectory (in saddles) are considered as the effects of prestressing. Saddles are one of the most important structural details of the additional prestressing system. For the purpose of closer examination of the action of monostrand in steel saddles with different radii of curvature, the methodology of experiment was developed and the concrete test panel in which holes for sensors and substituted cable ducts for monostrand are prepared was created. The concrete test panel enables change of the radius of curvature and was designed for analysis of monostrands in saddles with radii of 600, 1000 and 1500 mm. The aim of short-term experiments with monostrands is to determine suitable application of post-tensioning of existing structures with prestressing tendons in HDPE sheaths in saddles with small radii of curvature.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

24th Concrete Days 2017, 24th International Conference Concrete Days 2017

ISBN

978-3-0357-1284-1

ISSN

1662-9779

e-ISSN

—

Počet stran výsledku

7

Strana od-do

147-153

Název nakladatele

Trans Tech Publications

Místo vydání

Switzerland

Místo konání akce

Litomyšl

Datum konání akce

22. 11. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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