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99373

Studying Scour Hole Development around Rectangular Bridge Piers.

Article

Last updated: 04 Jan 2025

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Subjects

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Tags

Irrigation and Hydraulic Engineering

Abstract

This paper presents an experimental study of local scour around rectangular bridge pier through open channels (clear water scour). Tests were carried out on two rectangular pier models with a change in the pier length using different flow discharge. Through this, geometric properties of scour hole were studied such as length, width and depth. The bed of used flume was covered by false wooden bed. The soil was extracted from Nile river bed (Damietta branch, kafr el-tawila) d50 equal to 0.29mm and the soil was classified to poorly graded sand (SP). A wireless camera fixed on the model was used to observe the change in scour depth with time and other outer camera fixed above the model to observe the change in the total scour hole. Through conducting the experiments the flow depths were changed, therefore the velocities and difference Froude number (Fr) were gotten. A group of mathematical relationships were obtained which gathering the geometric properties of scour hole with flow properties. It's noted that from the study result, the depth of scour hole is reaching to average values of 87% from the maximum scour depth in the first two hours, but the horizontal dimension of scour hole is increasing by 80% from the maximum scour length

DOI

10.21608/bfemu.2020.99373

Keywords

Local Scour, Soil Sample, Pier Models, Froude Number, Bridge Pier, Wireless Camera, Open channels, Clear Water Scour & Scour Hole

Authors

First Name

M.

Last Name

Abddalla

MiddleName

G.

Affiliation

Assoc. Hydraulics Dept., Faculty of Engineering, Mansoura University.

Email

-

City

-

Orcid

-

First Name

M.

Last Name

Abdel Hady

MiddleName

A.

Affiliation

Assistant Prof., Irrigation and Hydraulics Dept., Faculty of Engineering, Mansoura University

Email

-

City

-

Orcid

-

First Name

M.

Last Name

Ahmed

MiddleName

Wahba

Affiliation

Teaching Assistant, Irrigation and Hydraulics Dept., Faculty of Engineering, Mansoura University.

Email

-

City

-

Orcid

-

Volume

41

Article Issue

1

Related Issue

14715

Issue Date

2016-03-01

Receive Date

2016-02-22

Publish Date

2020-06-30

Page Start

17

Page End

25

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 41_Issue 1_Pages 17-25.pdf

PDF . 1.1MB

Link

https://bfemu.journals.ekb.eg/article_99373.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=99373

Order

9

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Studying Scour Hole Development around Rectangular Bridge Piers.

Details

Type

Article

Created At

22 Jan 2023