Behavior of reinforced concrete beams without stirrups and strengthened with basalt fiber-reinforced polymer sheets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F23%3A00570621" target="_blank" >RIV/68378297:_____/23:00570621 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1061/JCCOF2.CCENG-4082" target="_blank" >https://doi.org/10.1061/JCCOF2.CCENG-4082</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1061/JCCOF2.CCENG-4082" target="_blank" >10.1061/JCCOF2.CCENG-4082</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Behavior of reinforced concrete beams without stirrups and strengthened with basalt fiber-reinforced polymer sheets

Popis výsledku v původním jazyce

This paper reports on a series of four-point bending experiments to investigate the shear capacity of reinforced concrete (RC) beams strengthened with externally bonded basalt fiber-reinforced polymer (BFRP) sheets. The experimental results show that BFRP sheets can significantly increase RC beams' shear capacity and ductility. To analyze the fracture and mechanical behaviors of BFRP sheet-strengthened RC beams, a three-dimensional (3D) finite-element model (FEM) based on the application of cohesive elements was developed. Mixed-mode constitutive models of the BFRP-concrete interface, the concrete potential fracture surface, and the reinforcement-concrete interface were proposed. The proposed constitutive models were able to characterize the interface's normal separation, tangential slip, and friction. A comparison of the simulation and experimental results indicates that the proposed numerical model can appropriately simulate the mechanical response, crack propagation, and crack distribution of BFRP sheet-strengthened RC beams. Finally, based on the proposed 3D FEM, a series of numerical tests were conducted to investigate the influence of key parameters (i.e., sheet elastic modulus, sheet bonding area, and sheet bonding angle) on the shear capacity of BFRP sheet-strengthened RC beams.

Název v anglickém jazyce

Behavior of reinforced concrete beams without stirrups and strengthened with basalt fiber-reinforced polymer sheets

Popis výsledku anglicky

This paper reports on a series of four-point bending experiments to investigate the shear capacity of reinforced concrete (RC) beams strengthened with externally bonded basalt fiber-reinforced polymer (BFRP) sheets. The experimental results show that BFRP sheets can significantly increase RC beams' shear capacity and ductility. To analyze the fracture and mechanical behaviors of BFRP sheet-strengthened RC beams, a three-dimensional (3D) finite-element model (FEM) based on the application of cohesive elements was developed. Mixed-mode constitutive models of the BFRP-concrete interface, the concrete potential fracture surface, and the reinforcement-concrete interface were proposed. The proposed constitutive models were able to characterize the interface's normal separation, tangential slip, and friction. A comparison of the simulation and experimental results indicates that the proposed numerical model can appropriately simulate the mechanical response, crack propagation, and crack distribution of BFRP sheet-strengthened RC beams. Finally, based on the proposed 3D FEM, a series of numerical tests were conducted to investigate the influence of key parameters (i.e., sheet elastic modulus, sheet bonding area, and sheet bonding angle) on the shear capacity of BFRP sheet-strengthened RC beams.

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

Journal of Composites for Construction

ISSN

1090-0268

e-ISSN

1943-5614

Svazek periodika

27

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

04023007

Kód UT WoS článku

000935155900021

EID výsledku v databázi Scopus

2-s2.0-85146933612