Derivation of normalized pressure impulse curves for flexural ultra high performance concrete slabs

Dragos, J; Wu, C; Haskett, M; Oehlers, D

Derivation of normalized pressure impulse curves for flexural ultra high performance concrete slabs

Dragos, J Wu, C

Haskett, M Oehlers, D

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Publication Type:: Journal Article
Citation:: Journal of Structural Engineering (United States), 2013, 139 (6), pp. 875 - 885
Issue Date:: 2013-06-01

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Field	Value	Language
dc.contributor.author	Dragos, J	en_US
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934	en_US
dc.contributor.author	Haskett, M	en_US
dc.contributor.author	Oehlers, D	en_US
dc.date.issued	2013-06-01	en_US
dc.identifier.citation	Journal of Structural Engineering (United States), 2013, 139 (6), pp. 875 - 885	en_US
dc.identifier.issn	0733-9445	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117530
dc.description.abstract	In previous studies, a finite-difference procedure was developed to analyze the dynamic response of simply supported normal reinforced concrete (NRC) slabs under blast loads. Ultra high performance concrete (UHPC) is a relatively new material with high strength and high deformation capacity in comparison with conventional normal strength concrete. Therefore, the finite-difference procedure for analysis of conventional reinforced concrete members against blast loads needs to be significantly adapted and extended to accommodate UHPC. In this paper, an advanced moment-rotation analysis model, employed to simulate the behavior of the plastic hinge of an UHPC member, is incorporated into the finite-difference procedure for the dynamic response analysis of reinforced UHPC slabs under blast loads. The accuracy of the finite-difference analysis model that utilized the moment-rotation analysis technique was validated using results from blast tests conducted on UHPC slabs. The validated finite-difference model was then used to generate pressure impulse (PI) curves. Parametric studies were then conducted to investigate the effects of various sectional and member properties on PI curves. Based on the simulated results, two equations were derived that can be used to normalize a PI curve. Further numerical testing of the normalization equations for UHPC members was then undertaken. The generated normalized PI curve, accompanied by the derived normalization equations, can be used for the purposes of general UHPC blast design. © 2013 American Society of Civil Engineers.	en_US
dc.relation.ispartof	Journal of Structural Engineering (United States)	en_US
dc.relation.isbasedon	10.1061/(ASCE)ST.1943-541X.0000733	en_US
dc.subject.classification	Civil Engineering	en_US
dc.title	Derivation of normalized pressure impulse curves for flexural ultra high performance concrete slabs	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.citation.volume	139	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
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
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.issue	6	en_US
pubs.publication-status	Published	en_US
pubs.volume	139	en_US

Abstract:

In previous studies, a finite-difference procedure was developed to analyze the dynamic response of simply supported normal reinforced concrete (NRC) slabs under blast loads. Ultra high performance concrete (UHPC) is a relatively new material with high strength and high deformation capacity in comparison with conventional normal strength concrete. Therefore, the finite-difference procedure for analysis of conventional reinforced concrete members against blast loads needs to be significantly adapted and extended to accommodate UHPC. In this paper, an advanced moment-rotation analysis model, employed to simulate the behavior of the plastic hinge of an UHPC member, is incorporated into the finite-difference procedure for the dynamic response analysis of reinforced UHPC slabs under blast loads. The accuracy of the finite-difference analysis model that utilized the moment-rotation analysis technique was validated using results from blast tests conducted on UHPC slabs. The validated finite-difference model was then used to generate pressure impulse (PI) curves. Parametric studies were then conducted to investigate the effects of various sectional and member properties on PI curves. Based on the simulated results, two equations were derived that can be used to normalize a PI curve. Further numerical testing of the normalization equations for UHPC members was then undertaken. The generated normalized PI curve, accompanied by the derived normalization equations, can be used for the purposes of general UHPC blast design. © 2013 American Society of Civil Engineers.

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http://hdl.handle.net/10453/117530