Parametric study of flexural strengthening of concrete beams with prestressed hybrid reinforced polymer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F19%3A00006766" target="_blank" >RIV/46747885:24620/19:00006766 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1944/12/22/3790" target="_blank" >https://www.mdpi.com/1996-1944/12/22/3790</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma12223790" target="_blank" >10.3390/ma12223790</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Parametric study of flexural strengthening of concrete beams with prestressed hybrid reinforced polymer

Popis výsledku v původním jazyce

Strengthening method of using hybrid fiber reinforced polymer is an effective way to increase the strengthening efficiency and lower the cost. This paper focuses on simulating the flexural behavior of reinforced concrete beam strengthened by prestressed C/GFRP (Carbon-Glass hybrid Fiber Reinforced Polymer) with different hybrid ratio and prestress level. An elastoplastic damage constitution is used to simulate the mechanical behavior of concrete. A cohesive zone model under mixed mode is adopted to describe the debonding behavior of the FRP-concrete and concrete-steel interface. The results show good agreement with experiment in the load-deflection curve, load-stress curve of steel and HFRP. And the failure mode of concrete and FRP debonding obtained from numerical simulation is the same as the test. Considering the improvement of bending capacity, stiffness and ductility of the strengthened beam in this paper, the best hybrid ratio of carbon to glass fiber is 1:1, and the suitable prestress level is between 30%-50% of its ultimate strength.

Název v anglickém jazyce

Parametric study of flexural strengthening of concrete beams with prestressed hybrid reinforced polymer

Popis výsledku anglicky

Strengthening method of using hybrid fiber reinforced polymer is an effective way to increase the strengthening efficiency and lower the cost. This paper focuses on simulating the flexural behavior of reinforced concrete beam strengthened by prestressed C/GFRP (Carbon-Glass hybrid Fiber Reinforced Polymer) with different hybrid ratio and prestress level. An elastoplastic damage constitution is used to simulate the mechanical behavior of concrete. A cohesive zone model under mixed mode is adopted to describe the debonding behavior of the FRP-concrete and concrete-steel interface. The results show good agreement with experiment in the load-deflection curve, load-stress curve of steel and HFRP. And the failure mode of concrete and FRP debonding obtained from numerical simulation is the same as the test. Considering the improvement of bending capacity, stiffness and ductility of the strengthened beam in this paper, the best hybrid ratio of carbon to glass fiber is 1:1, and the suitable prestress level is between 30%-50% of its ultimate strength.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/EF16_025%2F0007293" target="_blank" >EF16_025/0007293: Modulární platforma pro autonomní podvozky specializovaných elektrovozidel pro dopravu nákladu a zařízení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

19

Strana od-do

1-19

Kód UT WoS článku

000502284400147

EID výsledku v databázi Scopus

2-s2.0-85075795290