Bending Resistance of the Steel and Fibre-Reinforced Concrete Circular Hollow Section Composite Column in Fire

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00327999" target="_blank" >RIV/68407700:21110/18:00327999 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.icaci.com" target="_blank" >http://www.icaci.com</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Bending Resistance of the Steel and Fibre-Reinforced Concrete Circular Hollow Section Composite Column in Fire

Popis výsledku v původním jazyce

The recent development in technology of production and transport of the steel fibre-reinforced concrete enables its utilization in composite steel-concrete structures. This work is focused on development of mechanical behaviour and design of models of circular hollow section (CHS) composite steel and fibre-concrete (SFRC) columns at elevated temperature. Research includes two levels accuracy/complexity, allowing simplified or advanced approach to design following the coming changes in European standard for composite member design in fire (EN1994 1 2:2005). Experimental studies of the project include mechanical tests of heated fibre-concrete samples in tension and compression, uniform and non-uniform tests of insulated fragments of CHS and tests of full scale SFRC CHS columns in steady-state and transient-state regimes. Developing advanced FEM simulation of global mechanical behaviour of SFRC CHS columns is a multi-levelled composite mechanical and thermo-model and provide numerous numerical experiments. Together with steel material model in fire, validated FEM model of mechanical behaviour of fibre-reinforce concrete at elevated temperature is performed. Validated simplified and advanced thermal model of SFRC CHS at elevated temperature gives temperature fields and moisture distribution inside section which depends on direction, heat flux, sizes and gives possibility to model different fire cases of full-scale columns in bending and buckling at elevated temperature. Proposed analytical and simplified FEM mechanical model of column is taking in account degradation of mechanical properties, analytical models of transfer of heat inside column section and will provide simple solutions for designers.

Název v anglickém jazyce

Bending Resistance of the Steel and Fibre-Reinforced Concrete Circular Hollow Section Composite Column in Fire

Popis výsledku anglicky

The recent development in technology of production and transport of the steel fibre-reinforced concrete enables its utilization in composite steel-concrete structures. This work is focused on development of mechanical behaviour and design of models of circular hollow section (CHS) composite steel and fibre-concrete (SFRC) columns at elevated temperature. Research includes two levels accuracy/complexity, allowing simplified or advanced approach to design following the coming changes in European standard for composite member design in fire (EN1994 1 2:2005). Experimental studies of the project include mechanical tests of heated fibre-concrete samples in tension and compression, uniform and non-uniform tests of insulated fragments of CHS and tests of full scale SFRC CHS columns in steady-state and transient-state regimes. Developing advanced FEM simulation of global mechanical behaviour of SFRC CHS columns is a multi-levelled composite mechanical and thermo-model and provide numerous numerical experiments. Together with steel material model in fire, validated FEM model of mechanical behaviour of fibre-reinforce concrete at elevated temperature is performed. Validated simplified and advanced thermal model of SFRC CHS at elevated temperature gives temperature fields and moisture distribution inside section which depends on direction, heat flux, sizes and gives possibility to model different fire cases of full-scale columns in bending and buckling at elevated temperature. Proposed analytical and simplified FEM mechanical model of column is taking in account degradation of mechanical properties, analytical models of transfer of heat inside column section and will provide simple solutions for designers.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA15-19073S" target="_blank" >GA15-19073S: Modely ocelobetonových sloupů s rozptýlenou výztuží při požáru</a><br>

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