Axial compressed UHPC plate-concrete filled steel tubular composite short columns, Part I: Bearing capacity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F23%3A00573013" target="_blank" >RIV/68378297:_____/23:00573013 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.12989/scs.2023.47.3.405" target="_blank" >https://doi.org/10.12989/scs.2023.47.3.405</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.12989/scs.2023.47.3.405" target="_blank" >10.12989/scs.2023.47.3.405</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Axial compressed UHPC plate-concrete filled steel tubular composite short columns, Part I: Bearing capacity

Popis výsledku v původním jazyce

An experimental study on six axially-loaded composite short columns with different thicknesses of steel tube and that of the concrete plate was carried out. Compared to the mechanical behavior of component specimens under axially compressed, the failure modes, compression deformation, and strain process were obtained. The two main parameters that have a significant enhancement to cross-sectional strength were also analyzed. The failure of an axially loaded UHPC-CFST short column is due to the crushing of the UHPC plate, while the CFST member does reach its maximum resistance. A reduction coefficient K'c, related to the confinement coefficient, is introduced to account for the contribution of CFST members to the ultimate load-carrying capacity of the UHPC-CFST composite short columns. Based on the regression analysis of the relationship between the confinement index ξ and the value of fcc/fc, a unified formula for estimating the axial compressive strength of CFST short columns was proposed, combined with the experimental results in this research, and an equation for reliably predicting the strength of UHPC-CFST composite short columns under axial compression were also proposed.

Název v anglickém jazyce

Axial compressed UHPC plate-concrete filled steel tubular composite short columns, Part I: Bearing capacity

Popis výsledku anglicky

An experimental study on six axially-loaded composite short columns with different thicknesses of steel tube and that of the concrete plate was carried out. Compared to the mechanical behavior of component specimens under axially compressed, the failure modes, compression deformation, and strain process were obtained. The two main parameters that have a significant enhancement to cross-sectional strength were also analyzed. The failure of an axially loaded UHPC-CFST short column is due to the crushing of the UHPC plate, while the CFST member does reach its maximum resistance. A reduction coefficient K'c, related to the confinement coefficient, is introduced to account for the contribution of CFST members to the ultimate load-carrying capacity of the UHPC-CFST composite short columns. Based on the regression analysis of the relationship between the confinement index ξ and the value of fcc/fc, a unified formula for estimating the axial compressive strength of CFST short columns was proposed, combined with the experimental results in this research, and an equation for reliably predicting the strength of UHPC-CFST composite short columns under axial compression were also proposed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Steel & Composite Structures

ISSN

1229-9367

e-ISSN

1598-6233

Svazek periodika

47

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

KR - Korejská republika

Počet stran výsledku

17

Strana od-do

405-421

Kód UT WoS článku

000996361200008

EID výsledku v databázi Scopus

2-s2.0-85161283330