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291871

AN Experimental Study on Strengthening of R.C Flat Slab Edge Column Connections Subjected to Punching Shear Due to Eccentric Loads Using FRP

Article

Last updated: 28 Dec 2024

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Subjects

-

Tags

Civil Engineering

Abstract

 During the last few years, the need to flat slab systems has rapidly increased.
The slab column connections behavior plays decisive role because of the sudden
expected brittle failure as the slab may be punched by column, so improving the
behavior of these connections is essential. Flat slab column connections can benefit
from being strengthened by fiber reinforced polymers (FRP) as a structural application
in punching shear [1]. The effect of using carbon fiber (CFRP) and glass fiber (GFRP)
was investigated experimentally, also steel reinforcement bars were utilized as
strengthening element for comparison. Results of tested fifteen half-scale flat slab-edge
column connections reinforced concrete specimens under eccentric loads were
obtained. The investigated parameters were the eccentricity value, the type of
strengthening material and the number of rows of strengthening elements. Five groups
were created from the fifteen tested specimens, every one contained three specimens.
The first group consisted of three non-strengthening specimens, with variable
eccentricity values (0, e & 2e), these specimens were considered as control ones. Each
of the other four groups consisted of three specimens, which were strengthened by
CFRP, GFRP and steel bars. All the specimens of the second and fourth groups were
strengthened by one row of strengthening elements. All the specimens of the third and  fifth groups were strengthened by two rows of strengthening elements. The second and
third groups were loaded with the eccentricity value (e) while the fourth and fifth
groups were loaded with the eccentricity value (2e). According to the test results,
punching shear resistance increased up to 82 %. Also, the ductility factor results
revealed improvement of up to 50%. Ultimate loads were predicted according to ACI
440, and the calculated values shown good agreement with the experimental ones.

DOI

10.21608/msaeng.2023.291871

Keywords

punching shear, edge column-flat slab connections, FRP and strengthening

Authors

First Name

gamal

Last Name

ismail

MiddleName

-

Affiliation

-

Email

gamal.ismail@bhit.bu.edu.eg

City

-

Orcid

-

First Name

Khaled

Last Name

Sayed

MiddleName

-

Affiliation

Department of Civil Engineering, Benha Faculty of Engineering

Email

khaledsayed@hotmail.com

City

-

Orcid

-

First Name

Mostafa

Last Name

Omar

MiddleName

Ibrahiem

Affiliation

Civil Engineering, Benha Faculty of Engineering, Benha University

Email

eng.mustafa.omar@gmail.com

City

-

Orcid

-

Volume

2

Article Issue

2

Related Issue

40382

Issue Date

2023-03-01

Receive Date

2023-03-23

Publish Date

2023-03-01

Page Start

218

Page End

250

Print ISSN

2812-5339

Online ISSN

2812-4928

Article File

MSAENG_Volume 2_Issue 2_Pages 218-250.pdf

PDF . 2.9MB

Link

https://msaeng.journals.ekb.eg/article_291871.html

Detail API

https://msaeng.journals.ekb.eg/service?article_code=291871

Order

291,871

Type

Original Article

Type Code

2,183

Publication Type

Journal

Publication Title

MSA Engineering Journal

Publication Link

https://msaeng.journals.ekb.eg/

MainTitle

AN Experimental Study on Strengthening of R.C Flat Slab Edge Column Connections Subjected to Punching Shear Due to Eccentric Loads Using FRP

Details

Type

Article

Created At

28 Dec 2024