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There are a large amount of timber rail bridge structures throughout New Zealand. Many of these bridges have been in service for several decades and are nearing the end of their service life. However, the replacement of such bridges is expensive and incurs considerable disruptions to key transport lines throughout New Zealand. Because of the timber species and duration of time in service, many unknowns exist in relation to the exact material properties of these bridges. The research project will help to characterize the quality of the material and address this knowledge void, develop effective techniques to rehabilitate key elements and ascertain strategies to extend the service life of the structures in contrast to conducting expensive full bridge replacement. Field inspections on-site will be conducted. Experimental testing of full elements will take place at the UoA test hall facilities. Rehabilitation options could include the use of FRP or screw reinforcements which will be assessed through experimentation and numerical analysis. The research outcomes will include the development of key guidance documents.
Please contact: Dr. Gary Raftery
E-mail: g.raftery@auckland.ac.nz |