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125567

STATIC BEHAVIOUR OF REINFORCED HIGH STRENGTH CONCRETE HAUNCHED BEAMS STRENGHENED BY USING EPOXY BONDED EXTERNAL STEEL PLATES

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Last updated: 04 Jan 2025

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Subjects

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Tags

Civil Engineering: structural, Geotechnical, reinforced concrete and s…nd sanitary engineering, Hydraulic, Railway, construction Management.

Abstract

Strengthening of concrete haunched beams with epoxy bonded external steel side plates in shear is becoming on increasing by popular retrofit technique among researchers and engineering worldwide. Concrete of higher compressive strength have been produced currently and increasingly used by the designers and contractors. Therefore, the main purpose of the research described in this paper is to give better and full understanding of the shear behavior of high strength concrete rectangular beams strengthened with epoxy bonded external steel side plates and subjected to static load. The main variables studied were the geometric dimensions of bonded steel plates, width, position and arrangements, thickness of plate bonded on both sides of shear zone of beams, the effect of haunches (Negative haunches (-0.20) and positive haunches (+0.20)) and effect of quality degree of used concrete strength. During the tests cracking load, ultimate load, concrete strains, steel strains and deflection under load application were measured Test results showed that the width, position, arrangements and thickness of plate used considerably affects strength, deformation and mode of failure of the tested beams. Increasing the width, position, arrangements and thickness of plate bonded on both sides of shear zone of beams increases the cracking and ultimate capacities of the strengthened beams. Increasing the quality degree of concrete strength decreases the relative cracking and ultimate capacities of the strengthened beams compared to unstrengthened beams. The change from positive haunches (+0.20) to Negative haunches (-0.20) increases the cracking and ultimate capacities of the strengthened beams.

DOI

10.21608/jesaun.2010.125567

Authors

First Name

ABD EL-RAHMAN

Last Name

MEGAHID

MiddleName

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Affiliation

Professor of structural Eng. Civil Eng. Dept., Assiut University, Egypt

Email

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City

-

Orcid

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First Name

M. M.

Last Name

RASHWAN

MiddleName

-

Affiliation

Professor of structural Eng. Civil Eng. Dept., Assiut University, Egypt

Email

-

City

-

Orcid

-

First Name

AHMED MOHAMED

Last Name

SAYED

MiddleName

-

Affiliation

Demonstrator in civil Engineering Dept., Assiut University, Egypt

Email

-

City

-

Orcid

-

Volume

38

Article Issue

No 6

Related Issue

16878

Issue Date

2010-11-01

Receive Date

2010-08-16

Publish Date

2010-11-01

Page Start

1,391

Page End

1,428

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 38_Issue No 6_Pages 1391-1428.pdf

PDF . 1.4MB

Link

https://jesaun.journals.ekb.eg/article_125567.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=125567

Order

3

Type

Research Paper

Type Code

1,438

Publication Type

Journal

Publication Title

JES. Journal of Engineering Sciences

Publication Link

https://jesaun.journals.ekb.eg/

MainTitle

STATIC BEHAVIOUR OF REINFORCED HIGH STRENGTH CONCRETE HAUNCHED BEAMS STRENGHENED BY USING EPOXY BONDED EXTERNAL STEEL PLATES

Details

Type

Article

Created At

23 Jan 2023