316726

A Step Toward Proposing a Force Reduction Factor for Hybrid GFRP/Steel Reinforced Concrete Columns Under Earthquakes

Article

Last updated: 05 Jan 2025

Subjects

-

Tags

Civil Engineering

Abstract

The use of hybrid reinforcement (Stee/GFRP) system was proposed in the present study as a vital solution for overcoming corrosion problem with a proper energy dissipation capacity. This study also presents a preliminary step toward developing a force reduction factor for concrete columns reinforced with hybrid reinforcement. Nonlinear finite-element analysis (FEA) was used as a tool to achieve the research target. A novel FEA model for RC columns that captures the behavior of concrete columns solely reinforced with steel or GFRP bars and have been previously published by the first author, was first summarized. The study was then extended to test the effect of using hybrid reinforcement in terms of crack patterns, failure modes and load–lateral displacement hysteretic response. The force reduction for the hybrid RC specimen was also estimated. The reported test results clearly revealed that properly detailed hybrid RC columns have a recoverable and self-centering ability. The hybrid RC column sufficiently achieved the maximum drift meeting the limitation of most building codes. Acceptable levels of energy dissipation accompanied by relatively small residual forces, compared to the steel-reinforced column, were observed. The force reduction factor was suggested to be taken 2.5 for hybrid RC columns.

DOI

10.21608/sej.2023.232799.1044

Keywords

Sesimic design, force reduction factor, Ductility, drift capacity, hybrid reinforcement (steel/GFRP)

Authors

First Name

Ahmed

Last Name

Arafa

MiddleName

Nour

Affiliation

Civil Engineering Department, Faculty of Engineering, Sohag University, Sohag, 82524, Egypt

Email

ahmed_arafa@eng.sohag.edu.eg

City

Sohag

Orcid

-

First Name

Marwa

Last Name

Hesham

MiddleName

-

Affiliation

Civil Engineering Department, Faculty of Engineering, Sohag University, Sohag, 82524, Egypt

Email

-

City

-

Orcid

-

First Name

Mohamed

Last Name

Hussein

MiddleName

M. A.

Affiliation

Civil Engineering Department, Faculty of Engineering, Sohag University, Sohag, 82524, Egypt

Email

mohamed.ma_2000@yahoo.com

City

-

Orcid

-

Volume

3

Article Issue

2

Related Issue

43253

Issue Date

2023-09-01

Receive Date

2023-08-29

Publish Date

2023-09-01

Page Start

154

Page End

164

Print ISSN

2735-5888

Online ISSN

2735-5896

Link

https://sej.journals.ekb.eg/article_316726.html

Detail API

https://sej.journals.ekb.eg/service?article_code=316726

Order

316,726

Type

Original Article

Type Code

1,762

Publication Type

Journal

Publication Title

Sohag Engineering Journal

Publication Link

https://sej.journals.ekb.eg/

MainTitle

A Step Toward Proposing a Force Reduction Factor for Hybrid GFRP/Steel Reinforced Concrete Columns Under Earthquakes

Details

Type

Article

Created At

28 Dec 2024