Steel FRC slab in compression in steel-concrete composite frame joints

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Steel FRC slab in compression in steel-concrete composite frame joints

Popis výsledku v původním jazyce

The objective of the research is a steel fiber-reinforced concrete slab in compression in a composite frame joint. EN 1998-1 relates only to a composite joints with common concrete slab. This standard prescribes two mechanisms: 1) mechanism 1 acts in the concrete slab with a concentrated compressive force on the column flange; 2) mechanism 2 consist of struts and tie model, where concrete struts compress the concave parts of the column cross-section. By these mechanisms it is prescribed inaccurate formula for the effective width calculation of a common concrete slab in compression in the nodal zone, as the standard procedure does not consider the contribution of the confinement effect to the resistance of mechanism 1. Mecha-nism 1 represents a direct bearing of the concrete slab against the column flange. There is a concrete slab in compression confined by transverse reinforcement, slab continuity around the column flange and friction on the column flange. Moreover some publications describe different inclination of the concrete struts of mechanism 2. The resistance of mechanism 2 significantly depends on this inclination. The aim of this work is to derive a more accurate formula for calculation the effective width of the steel fiber-reinforced concrete slab in com-pression in the nodal zone. Experiment with real-size isolated composite joint, validation of ATENA numerical models and parametric study of composite joints with fiber-reinforced concrete slab are the main steps of this research.

Název v anglickém jazyce

Steel FRC slab in compression in steel-concrete composite frame joints

Popis výsledku anglicky

The objective of the research is a steel fiber-reinforced concrete slab in compression in a composite frame joint. EN 1998-1 relates only to a composite joints with common concrete slab. This standard prescribes two mechanisms: 1) mechanism 1 acts in the concrete slab with a concentrated compressive force on the column flange; 2) mechanism 2 consist of struts and tie model, where concrete struts compress the concave parts of the column cross-section. By these mechanisms it is prescribed inaccurate formula for the effective width calculation of a common concrete slab in compression in the nodal zone, as the standard procedure does not consider the contribution of the confinement effect to the resistance of mechanism 1. Mecha-nism 1 represents a direct bearing of the concrete slab against the column flange. There is a concrete slab in compression confined by transverse reinforcement, slab continuity around the column flange and friction on the column flange. Moreover some publications describe different inclination of the concrete struts of mechanism 2. The resistance of mechanism 2 significantly depends on this inclination. The aim of this work is to derive a more accurate formula for calculation the effective width of the steel fiber-reinforced concrete slab in com-pression in the nodal zone. Experiment with real-size isolated composite joint, validation of ATENA numerical models and parametric study of composite joints with fiber-reinforced concrete slab are the main steps of this research.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Composite Construction in Steel and Concrete IX

ISBN

978-3-433-03378-4

ISSN

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e-ISSN

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Počet stran výsledku

12

Strana od-do

510-521

Název nakladatele

Ernst & Sohn

Místo vydání

Berlin

Místo konání akce

Online

Datum konání akce

27. 7. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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