Application of externally post-tensioned FRP bars for strengthening reinforced concrete members

Rajabi, A; Valipour, HR; Samali, B; Foster, S

Application of externally post-tensioned FRP bars for strengthening reinforced concrete members

Rajabi, A Valipour, HR Samali, B

Foster, S

Permalink

Publication Type:: Conference Proceeding
Citation:: From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012, 2013, pp. 145 - 148
Issue Date:: 2013-08-12

Closed Access

	Filename	Description	Size
	2011008407OK.pdf	Published version	627.18 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Rajabi, A	en_US
dc.contributor.author	Valipour, HR	en_US
dc.contributor.author	Samali, B https://orcid.org/0000-0002-3426-7745	en_US
dc.contributor.author	Foster, S	en_US
dc.date.issued	2013-08-12	en_US
dc.identifier.citation	From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012, 2013, pp. 145 - 148	en_US
dc.identifier.isbn	9780415633185	en_US
dc.identifier.uri	http://hdl.handle.net/10453/31551
dc.description.abstract	The volume and weight of heavy vehicles using national road networks has been increasing over the last few decades. At the same time, more than half of the bridges around the world are over forty years old and deterioration of the existing bridges due to increasing traffic loads, adverse environmental conditions, fatigue and structural aging is becoming a major problem. Consequently, restoring and increasing the capacity of bridges and extending their serviceable life by using cost-effective strengthening techniques which ensure minimal traffic disruption, will be of vital importance for protecting the transport system. External post-tensioning is one of the best methods for rehabilitation of the reinforced concrete members owing to speed of construction and minimal disruption to traffic load. However, less attention has been paid to application of external post-tensioning for strengthening reinforced concrete bridge pier. Accordingly, in this paper the application of external posttensioning for strengthening reinforced concrete members is explored. In particular, a detailed nonlinear finite element model is developed and the feasibility of using post-tensioned FRP bars for strengthening a reinforced concrete beam is assessed. To evaluate the efficiency of this system, the results are compared to another finite element model, simulating RC beams strengthened with externally bonded FRP sheets. The flexural and shear strength enhancement achieved by these systems of external post-tensioning is calculated. For the case considered in this paper, application of external post-tensioning can increase the ultimate loading capacity of member by 60% depending on magnitude of post-tensioning forces. © 2013 Taylor & Francis Group.	en_US
dc.relation.ispartof	From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012	en_US
dc.title	Application of externally post-tensioned FRP bars for strengthening reinforced concrete members	en_US
dc.type	Conference Proceeding
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Sydney, Australia
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US

Abstract:

The volume and weight of heavy vehicles using national road networks has been increasing over the last few decades. At the same time, more than half of the bridges around the world are over forty years old and deterioration of the existing bridges due to increasing traffic loads, adverse environmental conditions, fatigue and structural aging is becoming a major problem. Consequently, restoring and increasing the capacity of bridges and extending their serviceable life by using cost-effective strengthening techniques which ensure minimal traffic disruption, will be of vital importance for protecting the transport system. External post-tensioning is one of the best methods for rehabilitation of the reinforced concrete members owing to speed of construction and minimal disruption to traffic load. However, less attention has been paid to application of external post-tensioning for strengthening reinforced concrete bridge pier. Accordingly, in this paper the application of external posttensioning for strengthening reinforced concrete members is explored. In particular, a detailed nonlinear finite element model is developed and the feasibility of using post-tensioned FRP bars for strengthening a reinforced concrete beam is assessed. To evaluate the efficiency of this system, the results are compared to another finite element model, simulating RC beams strengthened with externally bonded FRP sheets. The flexural and shear strength enhancement achieved by these systems of external post-tensioning is calculated. For the case considered in this paper, application of external post-tensioning can increase the ultimate loading capacity of member by 60% depending on magnitude of post-tensioning forces. © 2013 Taylor & Francis Group.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/31551