Experimental testing of UHPC Joints of precast concrete bridge deck

Kód výsledku v IS VaVaI

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RIV/68407700:21610/16:00303432

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental testing of UHPC Joints of precast concrete bridge deck

Popis výsledku v původním jazyce

Efficiency of composite bridges may be increased if the concrete slab is made of precast elements. The construction time can be shorter when modern technology and advanced materials are used. Favorable material properties of UHPC [1,3], especially high bond stress, allow for a very significant reduction of the anchorage length of reinforcement. The dimensions of joints of precast concrete elements may be optimized, i.e. significantly reduced. It leads to application of small amount of UHPC, which may result in a cheaper design e.g. at precast concrete composite bridges. Another reason of using UHPC as a material of joints is its capability to transfer local high stress concentrations. The number of shear connectors may be significantly reduced provided their structure is adapted to the anchorage in UHPC. It is possible to design shear connectors locally in groups instead of continuously distributed along the entire length of the top flange of a steel girder. The experience from already erected structures around the world shows that UHPC, used as a material of joints, may be a very good alternative, which results in excellent structural performance, increased durability of joints and makes acceleration of bridge construction possible[1,2].

Název v anglickém jazyce

Experimental testing of UHPC Joints of precast concrete bridge deck

Popis výsledku anglicky

Efficiency of composite bridges may be increased if the concrete slab is made of precast elements. The construction time can be shorter when modern technology and advanced materials are used. Favorable material properties of UHPC [1,3], especially high bond stress, allow for a very significant reduction of the anchorage length of reinforcement. The dimensions of joints of precast concrete elements may be optimized, i.e. significantly reduced. It leads to application of small amount of UHPC, which may result in a cheaper design e.g. at precast concrete composite bridges. Another reason of using UHPC as a material of joints is its capability to transfer local high stress concentrations. The number of shear connectors may be significantly reduced provided their structure is adapted to the anchorage in UHPC. It is possible to design shear connectors locally in groups instead of continuously distributed along the entire length of the top flange of a steel girder. The experience from already erected structures around the world shows that UHPC, used as a material of joints, may be a very good alternative, which results in excellent structural performance, increased durability of joints and makes acceleration of bridge construction possible[1,2].

Druh

O - Ostatní výsledky

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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