Finite element analysis of prestressed concrete box girder bridge

Curved concrete bridge girders have very complex internal forces, stress and strain distribution. As a consequence of their shape, not only the usual bending moments and shear forces are generated, but also important torsion moments are created. These moments rotate the axes of principal tensional s...

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Main Author:	Othman, Rebaz Abdulghafoor
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/40553/5/RebazAbdulghafoorOthmanMFKA2013.pdf
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id	my-utm-ep.40553
record_format	uketd_dc
spelling	my-utm-ep.405532017-06-29T07:22:39Z Finite element analysis of prestressed concrete box girder bridge 2013-08 Othman, Rebaz Abdulghafoor TA Engineering (General). Civil engineering (General) Curved concrete bridge girders have very complex internal forces, stress and strain distribution. As a consequence of their shape, not only the usual bending moments and shear forces are generated, but also important torsion moments are created. These moments rotate the axes of principal tensional stresses and increasing the risk of cracking. A study of torsional moment is found limited in the literature. Post-tensioning can prevent the cracks, but the additional of compression forces in different directions increase the complexity of stress and strain fields sometimes tendons lead to break away the web. Therefore, the curved post-tensioned concrete girders must be particularly designed and carefully constructed. The complete Senai Bridge has been modeled and used for a case study. Trapezoidal section has been chosen in the present investigation. The linear analysis of the box girder has been carry out by using LUSAS software. Three dimensional line modeling have been employed for discretization of domain and to analyze the complex behavior of straight and curved box-girders. Dead Load and Live Load according to British Standard code of practice, for zero torsion as well as maximum torsion are considered. Box section produces higher torsion in curved span compared to straight span with considering the same load. From the analysis result shows that higher thickness of the base and walls leads to increasing the torsional moment. 2013-08 Thesis http://eprints.utm.my/id/eprint/40553/ http://eprints.utm.my/id/eprint/40553/5/RebazAbdulghafoorOthmanMFKA2013.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Othman, Rebaz Abdulghafoor Finite element analysis of prestressed concrete box girder bridge
description	Curved concrete bridge girders have very complex internal forces, stress and strain distribution. As a consequence of their shape, not only the usual bending moments and shear forces are generated, but also important torsion moments are created. These moments rotate the axes of principal tensional stresses and increasing the risk of cracking. A study of torsional moment is found limited in the literature. Post-tensioning can prevent the cracks, but the additional of compression forces in different directions increase the complexity of stress and strain fields sometimes tendons lead to break away the web. Therefore, the curved post-tensioned concrete girders must be particularly designed and carefully constructed. The complete Senai Bridge has been modeled and used for a case study. Trapezoidal section has been chosen in the present investigation. The linear analysis of the box girder has been carry out by using LUSAS software. Three dimensional line modeling have been employed for discretization of domain and to analyze the complex behavior of straight and curved box-girders. Dead Load and Live Load according to British Standard code of practice, for zero torsion as well as maximum torsion are considered. Box section produces higher torsion in curved span compared to straight span with considering the same load. From the analysis result shows that higher thickness of the base and walls leads to increasing the torsional moment.
format	Thesis
qualification_level	Master's degree
author	Othman, Rebaz Abdulghafoor
author_facet	Othman, Rebaz Abdulghafoor
author_sort	Othman, Rebaz Abdulghafoor
title	Finite element analysis of prestressed concrete box girder bridge
title_short	Finite element analysis of prestressed concrete box girder bridge
title_full	Finite element analysis of prestressed concrete box girder bridge
title_fullStr	Finite element analysis of prestressed concrete box girder bridge
title_full_unstemmed	Finite element analysis of prestressed concrete box girder bridge
title_sort	finite element analysis of prestressed concrete box girder bridge
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2013
url	http://eprints.utm.my/id/eprint/40553/5/RebazAbdulghafoorOthmanMFKA2013.pdf
_version_	1747816557416808448

Finite element analysis of prestressed concrete box girder bridge

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