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114689

EFFECT OF OPENINGS ON THE STATICAL BEHAVIOUR OF REINFORCED HIGH STRENGTH CONCRETE L- BEAMS

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

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

Abstract

There is a growing trend in constructing high-rise buildings towards eliminating the extra space above false ceilings by passing service ducts through openings in the floor beams. Such an arrangement of building services leads to a significant reduction in the dead space, and results in a more compact and economical design. However, including openings in the web of a reinforced concrete beam induces high stress concentration at opening corners, reduces beam stiffness, and alters the simple beam behavior to a more complex one. Therefore, this work investigates the effect of openings on the statical behavior of high strength L- section reinforced concrete beams. For this purpose, thirteen reinforced concrete beams of L- section, with web openings, were tested. The studied parameters were: opening position, concrete compressive strength, length of the opening, reinforcement around the opening, and shape of the opening (rectangular, square, and circle). Cracking and ultimate loads were recorded; deflections at the position of mid- span and at the center of the opening were measured. Pattern of cracks and modes of failure were observed It was found that, decreasing the compressive strength of the used concrete, or the steel reinforcement around the opening, and increasing the opening length have a great effect on cracking and ultimate loads, pattern of cracks, and maximum induced deflections and strains, i.e., bearing capacity, and deformation capacity of such tested beams.

DOI

10.21608/jesaun.2013.114689

Keywords

High strength concrete, H.S.C. L- section beam, web openings

Authors

First Name

A. Y.

Last Name

ABOUELEZZ

MiddleName

-

Affiliation

Lec. , Civil Eng. Dep , Minia University, Minia , Egypt

Email

dr_alaa_abouelezz@yahoo.com

City

-

Orcid

-

First Name

S.A. EL-

Last Name

BASSUONI

MiddleName

-

Affiliation

M.Sc. Student, Civil Eng. Dep , Minia University, Minia , Egypt

Email

-

City

-

Orcid

-

Volume

41

Article Issue

No 1

Related Issue

16627

Issue Date

2013-01-01

Receive Date

2012-01-19

Publish Date

2013-01-01

Page Start

89

Page End

112

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 41_Issue No 1_Pages 89-112.pdf

PDF . 1.5MB

Link

https://jesaun.journals.ekb.eg/article_114689.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=114689

Order

6

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

EFFECT OF OPENINGS ON THE STATICAL BEHAVIOUR OF REINFORCED HIGH STRENGTH CONCRETE L- BEAMS

Details

Type

Article

Created At

23 Jan 2023