Seismic analysis of beam-type bridges in Sudan

Dissertant

Maglad, Ahmad Mustafa Mahmud

Thesis advisor

Husayn, Ahmad Qasim Mahmud
Shaban, Ibrahim Jalal

University

Omdurman Islamic University

Faculty

Faculty of Engineering

Department

Department of Civil Engineering

University Country

Sudan

Degree

Ph.D.

Degree Date

2012

English Abstract

In this thesis seismic analysis of beam-type bridges in Sudan was studied. Burri, al Manshia and al Damer Bridges were taken as case studies to investigate seismic effects.

The first two bridges were constructed at Khartoum State in the years 1972 and 2001 respectively.

The third bridge was constructed at River Nile State in the year 2008.

The selected bridges represent prestressed concrete box and I-Girder beam-type bridges. Finite Element models for the three bridges were built. The seismic analysis was performed by two methods, direct integration time history analysis and response spectrum analysis. The Response Spectrum for Central Khartoum, Sudan proposed by Y.

Mohamedzein, et al.

[7] was considered for the analysis. A SIMQKE [6] program was used to artificially simulate earthquake motions compatible with the prescribed response spectra. A computer program has been developed in MATLAB and was used to analyze the problem under research.

The Commercial Structural Analysis SAP2000 program [11] was also used for the comparative study and it was found that it gave typical results.

The developed software has been found to be efficient, reliable and easy to apply. It was found that bridge response in terms of displacements, shear and moments was directly proportioned to the peak ground acceleration (PGA). Also it was found that time history analysis and response spectrum analysis almost gave the same results. Due to the ease of implementation, the response spectrum method is recommended for the evaluation of seismic effects on the studied bridge types. Where nonliterary may exist such in piers and abutments it is recommended to use nonlinear time history analysis to evaluate seismic effects. For future research it is recommend to design response spectra for other areas of Sudan.

Also it is recommended to make use of the developed software for other types of bridges.

Main Subjects

Civil Engineering

Topics

No. of Pages

209

Table of Contents

Table of contents.

Abstract.

Chapter One : Introduction.

Chapter Two : Literature review.

Chapter Three : Dynamic analysis of beams, with earthquake excitation.

Chapter Four : Developed finite element software for dynamic analysis of bridges.

Chapter Five : Application of seismic analysis for the cases studied.

Chapter Six : Results and discussions of results.

Chapter Seven : Conclusions and recommendations.

References.

American Psychological Association (APA)

Maglad, Ahmad Mustafa Mahmud. (2012). Seismic analysis of beam-type bridges in Sudan. (Doctoral dissertations Theses and Dissertations Master). Omdurman Islamic University, Sudan
https://search.emarefa.net/detail/BIM-366253

Modern Language Association (MLA)

Maglad, Ahmad Mustafa Mahmud. Seismic analysis of beam-type bridges in Sudan. (Doctoral dissertations Theses and Dissertations Master). Omdurman Islamic University. (2012).
https://search.emarefa.net/detail/BIM-366253

American Medical Association (AMA)

Maglad, Ahmad Mustafa Mahmud. (2012). Seismic analysis of beam-type bridges in Sudan. (Doctoral dissertations Theses and Dissertations Master). Omdurman Islamic University, Sudan
https://search.emarefa.net/detail/BIM-366253

Language

English

Data Type

Arab Theses

Record ID

BIM-366253