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101231

Simplified Method to Optimum Design of Built-Up Steel Beam Section.

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Civil Engineering

Abstract

With the increase of steel cost the importance of optimum design increases. Many factors affect the design of beam sections such as (unsupported length – allowable stress in lateral torsional buckling- load and support condition–steel grade – section class (compact, non-compact, slender)). Choosing a section empirically or by experience and neglecting the previous factors is not correct. To design a beam section allowable stress may be assumed, the required inertia is too calculated, from sections tables a suitable section is to be chosen. At this step, the effect of unsupported length on the section properties has been neglected. The section may have large inertia but is still slender according to code limits and its properties will be reduced again, on other hand the section may have small inertia but still has considerable allowable stress as compact section. Which section is the best? , which factor has a big effect? And how to satisfy all these factors in one-step.
As explained before it is difficult to choose the most economic section. A computer program has been made to select the best section by making many trails to choose the best section satisfying all conditions of the Egyptian code of practice for steel construction for the design of beam sections.  After that the results were grouped to know the way to obtain the optimum section with respect to flange width, flange thickness, ratio of flange with to thickness, web height, web thickness and lateral unsupported length.

DOI

10.21608/bfemu.2020.101231

Keywords

Optimum Design, Unsupported length, Allowable Stress, Lateral Torsional Buckling, Support Condition, Steel Grade, Section Class (Compact, Non-compact, Slender)

Authors

First Name

FIKRY

Last Name

SALEM

MiddleName

A.

Affiliation

Department of Structural Engineering, Faculty of Engineering Mansoura University, Mansoura, P.O. Box 35516, Egypt

Email

drfikry_salem@yahoo.com

City

-

Orcid

-

Volume

40

Article Issue

2

Related Issue

15351

Issue Date

2015-06-01

Receive Date

2015-01-26

Publish Date

2020-07-07

Page Start

13

Page End

20

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 40_Issue 2_Pages 13-20.pdf

PDF . 541.4kB

Link

https://bfemu.journals.ekb.eg/article_101231.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=101231

Order

8

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

Simplified Method to Optimum Design of Built-Up Steel Beam Section.

Details

Type

Article

Created At

22 Jan 2023