Capacity of Compression Members in RTA Timber Truss Bridges

Nicholas, A; Crews, KI; Ariyaratne, W

Capacity of Compression Members in RTA Timber Truss Bridges

Nicholas, A Crews, KI

Ariyaratne, W

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Publisher:: Austroads Incorporated
Publication Type:: Conference Proceeding
Citation:: The Austroads 8th Bridge Conferences - Sustainable Bridges: The Thread of Society - proceedings Volume II, 2011, pp. 268 - 284
Issue Date:: 2011-01

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Field	Value	Language
dc.contributor.author	Nicholas, A	en_US
dc.contributor.author	Crews, KI https://orcid.org/0000-0003-1450-1423	en_US
dc.contributor.author	Ariyaratne, W	en_US
dc.contributor.editor	Ponnampalam, V	en_US
dc.contributor.editor	Ancich, E	en_US
dc.contributor.editor	Madrio, H	en_US
dc.date	2011-10-31	en_US
dc.date.issued	2011-01	en_US
dc.identifier.citation	The Austroads 8th Bridge Conferences - Sustainable Bridges: The Thread of Society - proceedings Volume II, 2011, pp. 268 - 284	en_US
dc.identifier.isbn	978-1-921709-81-4	en_US
dc.identifier.uri	http://hdl.handle.net/10453/31299
dc.description.abstract	Since the introduction of the limit state design method for Australian bridge design in the Austroads Bridge Design Code in 1992, there has not been an associated limit states timber bridge design code. The last applicable code was the working stress design version in the 1976 NAASRA Bridge Design Specification, which invoked AS 1720:1975 SAA Timber Structures Code. The RTA is constantly under pressure to replace or significantly upgrade the remaining timber bridges on NSW roads, because they do not meet current loading standards and because of the large maintenance burden they impose. Many of these bridges employ truss designs that are of heritage significance, and are listed on the State Heritage Register. It has long been recognised that AS 1720 is particularly conservative when it is applied to the design of compression members in RTA timber truss bridges. For this reason, a research and testing program was conducted at UTS in order to develop guidelines to allow reasonable prediction of compression strength of timber members in these bridges. The four primary areas that were studied are bridge timber properties, shear capacity of spacers, creep effects and buckling modes. From this testing, new guidelines have been developed.	en_US
dc.publisher	Austroads Incorporated	en_US
dc.relation.ispartof	The Austroads 8th Bridge Conferences - Sustainable Bridges: The Thread of Society - proceedings Volume II	en_US
dc.relation.ispartof	Austroads Bridge Conference	en_US
dc.title	Capacity of Compression Members in RTA Timber Truss Bridges	en_US
dc.type	Conference Proceeding
utslib.location	Australia	en_US
utslib.location.activity	Sydney, Australia	en_US
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
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.consider-herdc	true	en_US
pubs.finish-date	2011-11-05	en_US
pubs.place-of-publication	Australia	en_US
pubs.start-date	2011-10-31	en_US

Abstract:

Since the introduction of the limit state design method for Australian bridge design in the Austroads Bridge Design Code in 1992, there has not been an associated limit states timber bridge design code. The last applicable code was the working stress design version in the 1976 NAASRA Bridge Design Specification, which invoked AS 1720:1975 SAA Timber Structures Code. The RTA is constantly under pressure to replace or significantly upgrade the remaining timber bridges on NSW roads, because they do not meet current loading standards and because of the large maintenance burden they impose. Many of these bridges employ truss designs that are of heritage significance, and are listed on the State Heritage Register. It has long been recognised that AS 1720 is particularly conservative when it is applied to the design of compression members in RTA timber truss bridges. For this reason, a research and testing program was conducted at UTS in order to develop guidelines to allow reasonable prediction of compression strength of timber members in these bridges. The four primary areas that were studied are bridge timber properties, shear capacity of spacers, creep effects and buckling modes. From this testing, new guidelines have been developed.

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http://hdl.handle.net/10453/31299