Infrastructure Engineering - Research Publications
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ItemThe Victorian digital Cadastre: Challenges and investigations(CEUR, 2016-01-01)In 2011 the Digital Cadastre Protocol (ePlan) was introduced in Victoria. ePlan is a collaborative program between the Australian land authorities and the surveying industry, in conjunction with the Intergovernmental Committee on Surveying and Mapping (ICSM). ePlan is to replace paper and PDF plans with digital files based on a national standard. ePlan has been operational in Victoria for 2D (nonbuilding) plans since 2013 and several services such as validation, visualisation and digital data download have been built within the Victorian land authority - Land Victoria - systems. The Victorian ePlan project is faced with some challenges that will impact the uptake of this initiative among the cadastral surveyors, e.g. surveyors acceptance of adopting a new method of producing plans, quality of the visualisation service which converts the ePlan LandXML file into PDF as the legal title diagram and support for 3D building subdivision plans. In order to overcome the identified challenges, Land Victoria has defined several research programs. An ‘ePlan Engagement Program’ has commenced and aims to gain a greater understanding of surveying firms’ subdivision processes and how ePlan can fit into them and also means surveyors are participating in ePlan’s development. The design and development of a new online tool is also under investigation which aims to enable surveyors to improve the quality of the visualised PDF and define sheets, exaggerations and enlargements when required. Another ongoing research program is related to the technical aspect of a 3D digital cadastre for Victoria including 3D data modelling, validation and visualisation components. This paper aims to explore the current status of the Victorian ePlan implementation and discuss the identified challenges and ongoing investigations.
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ItemThe Structure of Turbulence Across the Sediment-Water-Interface(Australasian Fluid Mechanics Society, 2016)An increasing body of literature indicates that turbulence is a major contributor to the exchange of mass and momentum across the sediment-water-interface (SWI). The permeability Reynolds number ReK = p Ku_=u is a key parameter describing the flow at the SWI, where K is the permeability of the porous medium. The dynamics of turbulence around the SWI are determined by the intricate interaction between the hydrodynamics and the sediment characteristics, however, traditional experimental techniques are hindered in accessing this region properly, making experimental data rare. In this work we describe novel experimental results, which combines refractive index matching (RIM) and particle tracking velocimetry (PTV), and capture the instantaneous velocity fields across the SWI, for two different values of ReK. The measurements enable us to evaluate the TKE budget, a key tool for understanding turbulent processes. The results show that for low ReK the TKEbudget is in good agreement with DNS results for an impermeable boundary. For the same permeability but larger ReK, the flow penetrates the interface and the TKE-budget shows turbulence is both produced and transported beyond the SWI and into the permeable medium. Unlike the low ReK case where at the interface only viscous diffusion and dissipation are dominant, in the high ReK case all terms in the TKE-budget are of importance.
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ItemImprovements and difficulties associated with the seismic assessment of infrastructure in Australia(Bushfire and Natural Hazards CRC, 2015)
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ItemNon-ductile seismic performance of reinforced concrete walls in Australia(Engineers Australia, 2016)
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ItemDisplacement Capacity of Lightly Reinforced Rectangular Concrete Walls(Australian Earthquake Engineering Society, 2016)
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ItemTorsional Displacement for Asymmetric Low-Rise Buildings with RC C-shaped Cores(Australian Earthquake Engineering Society, 2015)
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ItemHarnessing BIM for 3D digital management of stratified ownership rights in buildings.(International Federation of Surveyors - available at http://www.fig.net …, 2016)
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ItemComparing Three Types of BIM-based Models for Managing 3D Ownership Interests in Multi-level Buildings(International Federation of Surveyors (FIG) - available at http://www.gdmc …, 2016)
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ItemFIELD OBSERVATION SITE FOR AIR-SEA INTERACTIONS IN TROPICAL CYCLONES(AMER SOC MECHANICAL ENGINEERS, 2016)Accurate predictions of winds, waves and currents within extreme tropical cyclones are critical for shipping, offshore oil and gas, ports and harbours, coastal erosion, tourism and fishing. The paper will describe a unique field observation programme intended to gather in situ data about air-sea interactions in tropical cyclones. The site has been established on the Woodside-operated North Rankin Complex, an offshore gas production facility located off the north-west coast of Western Australia. The facility is multi-purpose. It will assist Woodside to manage platform operations during the cyclone season and to make advances in the estimate of extreme wave crest heights for platform loading while enabling academic researchers to measure air-sea interactions. Concurrent measurements are conducted in the atmospheric boundary layer, on the ocean surface and below the surface all the way to the bottom at 120 m depth. The measurements include fluxes of momentum and energy across the air-sea interface, spray production, directional wave spectra up to high wavenumbers, and will allow us to close the balance of the air-sea exchanges for the first time in extreme field conditions.
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ItemDIRECTIONAL ANALYSIS AND POTENTIAL FOR SPECTRAL MODELLING OF INFRAGRAVITY WAVES(AMER SOC MECHANICAL ENGINEERS, 2016)In this paper, we interrogated wave data collected by US Army Corps of Engineers at their well-known Field Research Facility, Duck, North Carolina and SHELL Corporation at Lagos, Nigeria. Both measurements were designed to collect wind waves with a conventional wave sampling configuration and not a dedicated infragravity wave sampling regime. Here, we developed a new approach to obtain directional information of and explored the potential to model infragravity waves in the spectral domain. It was found that infragravity wave heights had a strong dynamic relationship with an inverse relative depth parameter and that directional spreadings were moderately correlated with wind wave spreadings and wave energy. Further, infragravity directional spreadings were typically broader compared to their wind wave directional spreading counterparts.