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127757

IMPACT OF SEISMIC PROVISIONS IN DIFFERENT EDITIONS OF THE EGYPTIAN CODE OF LOADS

Article

Last updated: 23 Jan 2023

Subjects

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Tags

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

Abstract

The last edition of the Egyptian Code of Loads (ECOL) was released by the end of year 2008. The seismic provisions in this edition are almost completely different compared with those in the 1993 edition while some specific changes are presented relative to the 2003 edition. The major significant changes in the seismic provisions revealed in the different editions are reviewed. The impact of these provisions on the level of seismic protection for different types of structures with different heights is analyzed and discussed. An analytical analysis is carried out to compare and verify the applicability of these methods and the protection level they introduce. The modal response spectrum (MRS) analysis is carried out using the elastic design spectrum specified by the 2008 ECOL while the time history analysis (THA) is applied using seven different real earthquake excitations selected to match the specified elastic spectrum and soil type. Suggestion to rationally enhance the seismic protection level obtained from the multiple response spectrum is presented and emphasized. This study extends to analyze and compare our seismic provisions with those appeared in different international codes for sites with similar conditions. It is found that the provisions in the 1993 edition yield base shear much less than the values obtained using 2008 edition especially for low to medium height buildings located in medium and high seismic zones. Also, it is found that some provisions in the new edition need to be urgently reconsidered.

DOI

10.21608/jesaun.2009.127757

Keywords

seismic codes, ECOL, seismic analysis methods, response modification factor, seismic provisions

Authors

First Name

Waleed

Last Name

Abo El-Wafa Mohamed

MiddleName

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Affiliation

Lecturer, Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt.

Email

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City

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Orcid

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Volume

37

Article Issue

No 4

Related Issue

16836

Issue Date

2009-07-01

Receive Date

2009-06-15

Publish Date

2009-07-01

Page Start

859

Page End

884

Print ISSN

1687-0530

Online ISSN

2356-8550

Link

https://jesaun.journals.ekb.eg/article_127757.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=127757

Order

2

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

-

Details

Type

Article

Created At

23 Jan 2023