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Abstract

The aim of this paper is to present a new stochastic process model that will capture the true nature of deterioration of timber-concrete composite beams. Composite elements such as timber-concrete composite sections are designed to take advantage of compatibility of materials under sustained loading. Applied sustained load on timber-concrete composite structures causes gradual increase of deformation and deflection. In particular for timber-concrete composite beams, component materials will deteriorate at different pace over the life-cycle. In order to enable efficient management of structures in terms of required maintenance, repair and/or replacement, it is essential to be able to capture the uncertain nature of the deterioration process. We focus on modeling the deterioration of mid-span deflection of the timber-concrete composite beam over long term under sustained load. As the increasing deflection of the timber-concrete composite beam over time is generally uncertain and non-decreasing, it can best be regarded as a continuous gamma process. Examples of continuous gamma process representation have been included.

Publication Type:	Conference or Workshop Item (Paper)
Additional Information:	T . Micic , D . Stojic and N . Velimirovic (2014) Stochastic process model for timber-concrete composite beam deterioration, In Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures, Edited by George Deodatis , Bruce R . Ellingwood and Dan M . Frangopol, CRC Press; Pages 5127–5133; Print ISBN: 978-1-138-00086-5; eBook ISBN: 978-1-315-88488-2; DOI: 10.1201/b16387-745. Copyright CRC Press 2014.
Publisher Keywords:	Continuous stochastic process; timber concrete composite section; remaining life
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Departments:	School of Science & Technology > Engineering

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