Civil Engineering - Theses

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    Intersectoral water allocation : valuing water and the case for water property rights
    Glennie, Paul Rog�r. (University of Melbourne, 2006)
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    Intersectoral water allocation : valuing water and the case for water property rights
    Glennie, Paul Rog�r. (University of Melbourne, 2006)
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    The structure and strength of Victorian brown coals
    Rosengren, K. J. (University of Melbourne, 1961)
    A soil mechanics investigation into the structure and strength of Victorian brown coals has been performed and the results of consolidation and triaxial tests explained in terms of a proposed model of coal structure. Brown coal possesses a porous skeleton with aggregates of planar aromatic molecules cross-linked by aliphatic chain structures. The aggregates are effectively in contact with direct chemical linking at the points of contact. However, the bonding within the aggregates is much stronger than that between aggregates and the response of brown coal to stress is dominated by the inter-aggregate contact forces. Brown coal follows an effective stress law and a Hvorslev type law, with Ce/Je approximately 0.25 and �e approximately 35�, is applicable. A frictional type shear strength law is suggested and, good agreement is found between predicted and measured tensile strengths. Consolidation behaviour closely resembles that of a clay and the distribution of moisture contents in brown coal seams is shown to be a consolidation phenomenon. Other features in common with clays are the correlation of dimensionless parameters and the existence of a critical voids ratio line.
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    Investigating the benefits of considering the payload spectra of freight vehicles on pavement costs based on weigh-in-motion data
    Ren, Jing ( 2017)
    Truck traffic is a crucial factor that contributes to pavement damage. The urbanization and globalization promote the higher level of daily consumption for goods, thus increasing the derived demand for freight transport. In some countries, such as Australia, there is a trend towards using larger vehicles, which raised the road authorities’ concern about their effect on pavement because of the lack of pavement maintenance and rehabilitation funding. Therefore, it is important to have a comprehensive understanding of Australian road freight market and optimize the allocation of freight for different types of trucks to reduce the total pavement damage. Weigh-in-motion (WIM) system, which measures and records detailed vehicle information operating on road, was the data source for this study. The data was provided by the State Road Authority of Victoria (VicRoads). This thesis gave out a prototype filtering strategy for WIM database to improve the accuracy. Also, it investigated the efficiency of freight transport by comparing the effect of six-axle semi-trailers and nine-axle B-doubles with regards to pavement performance when carrying various payloads. Mathematical models were developed to help decision makers consider how to distribute the road freight task more efficiently to minimize the pavement damage induced by freight vehicles. A simplified pavement performance prediction model was utilized as a basis to determine the future pavement maintenance & rehabilitation schedules and thus, help compare the long-term pavement treatment costs for different traffic loading scenarios. The outcomes of the research showed that it would have considerable advantages in reducing the overall pavement damage by decreasing the percentage of empty trucks, changing the proportion of freight carried by B-doubles as well as optimizing the payload distributions. In addition, there would be significant benefits in the pavement maintenance & rehabilitation costs over the pavement service life by improving the allocation of freight for trucks.
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    State of Victoria: a description of the Loch Garry Flood Protection Scheme: Goulburn River levees
    East, Lewis R. ( 1924)
    In dealing with the subject of the Loch Garry Flood Protection Scheme, no attempt will be made to describe in detail all Flood Protective works carried out along the Goulburn River, but, in order to explain clearly the present position in regard to such works, the more important geographical and physical characteristics of the Goulburn River will be described and a brief outline will be given of the steps leading up to the adoption of the present scheme.