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- W777098818 abstract "Historically New Zealand bridges relied on concrete kerbs to provide re-direction of wayward vehicles. Recently New Zealand Transport Agency adopted NCHRP 350 and crash performance testing of barrier systems for barrier design and selection. Evaluation of the older rigid bridge barrier system has shown it typically only provides a Test Level 2 collision performance. Recent risk studies for barrier selection have shown the TL2 barrier performance to be inadequate for current traffic volumes, vehicle weights and vehicle travel speeds on state highway bridges and hence barrier upgrading can often be justified. New Zealand Transport Agency recognised these issues and has undertaken a project to prepare a guideline document to not only ensure consistency in the design of bridge barrier retrofits but also in the evaluation of the existing bridge using a design philosophy to optimise the structure asset management outcome. The proposed evaluation and barrier design procedures and principles integrate international best practice and provide a rational and consistent method for designing semi-rigid barriers for a range of barrier collision performance. The guideline also includes a range of acceptable solutions, for different collision performance barriers and the associated transitions, with the aim to achieve industry wide standardisation and value-for-money. (a) For the covering entry of this conference, please see IRRD abstract no. E218160." @default.
- W777098818 created "2016-06-24" @default.
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- W777098818 date "2009-05-01" @default.
- W777098818 modified "2023-09-27" @default.
- W777098818 title "Bridge barrier retrofits in New Zealand" @default.
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- W777098818 hasPublicationYear "2009" @default.
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