Earthquake protection of masonry buildings using fibre reinforced polymer strengthening. The importance of this research is highlighted, both nationally and internationally, by the work of the insurance industry which reported that the economic risk posed by a moderate earthquake in any of the capital cities in Australia is of the order of billions of dollars (Blong, 1993). For example, a 'design magnitude' earthquake in Sydney is predicted to cause, just in domestic construction, over $10 bill ....Earthquake protection of masonry buildings using fibre reinforced polymer strengthening. The importance of this research is highlighted, both nationally and internationally, by the work of the insurance industry which reported that the economic risk posed by a moderate earthquake in any of the capital cities in Australia is of the order of billions of dollars (Blong, 1993). For example, a 'design magnitude' earthquake in Sydney is predicted to cause, just in domestic construction, over $10 billion damage and more than 5000 deaths. Most of this damage would be associated with unreinforced masonry construction such as low-rise apartment buildings. The damage bill for the entire built environment (with business interruption costs) could easily be an order of magnitude greater.Read moreRead less
Ductile FRP retrofit of concrete frames subject to static and earthquake loading. Australia needs to spend at least $500 million annually on the repair and upgrading of concrete structures alone just to maintain our existing civil infrastructure. Furthermore, it has been estimated that more than 500 deaths and $10 billion damage will be caused by a moderate earthquake in Sydney or Melbourne. Most of this damage will be due to the collapse of buildings. This research will develop a new form of ....Ductile FRP retrofit of concrete frames subject to static and earthquake loading. Australia needs to spend at least $500 million annually on the repair and upgrading of concrete structures alone just to maintain our existing civil infrastructure. Furthermore, it has been estimated that more than 500 deaths and $10 billion damage will be caused by a moderate earthquake in Sydney or Melbourne. Most of this damage will be due to the collapse of buildings. This research will develop a new form of ductile plating that will reduce the cost of retrofitting concrete bridges and buildings. This project will also help train two PhD students and one Research Associate and further enhance the existing collaboration between Australia and Italy.Read moreRead less
A unified reinforced concrete model for flexure and shear. The catastrophic Minnesota River Bridge collapse in the USA in 2007 highlighted the importance of accurately assessing, maintaining, upgrading and prolonging the design life of our aging infrastructure. The problem, which is just as severe in Australia, is further exacerbated by increasing man-made (terrorist) hazards and natural hazards such as earthquake, tsunami, flood and bushfire. Reinforced concrete and composite steel-concrete st ....A unified reinforced concrete model for flexure and shear. The catastrophic Minnesota River Bridge collapse in the USA in 2007 highlighted the importance of accurately assessing, maintaining, upgrading and prolonging the design life of our aging infrastructure. The problem, which is just as severe in Australia, is further exacerbated by increasing man-made (terrorist) hazards and natural hazards such as earthquake, tsunami, flood and bushfire. Reinforced concrete and composite steel-concrete structures comprise a very large part of Australia's bridge and building infrastructure. This project will provide a safe and more economical tool for engineers to both extend the working-life of existing infrastructure and design new infrastructure.Read moreRead less
Displacement-based assessment of the seismic resistance of unreinforced masonry buildings. Earthquakes have caused over $1,000 billion of damage and more than 100,000 deaths in the last decade. This devastation occurred mainly in unreinforced brick masonry (URM) buildings which constitute the bulk of the domestic building stock in low seismicity regions, including Australia. These buildings were designed to resist forces, not the displacements, caused by earthquake ground shaking. This projec ....Displacement-based assessment of the seismic resistance of unreinforced masonry buildings. Earthquakes have caused over $1,000 billion of damage and more than 100,000 deaths in the last decade. This devastation occurred mainly in unreinforced brick masonry (URM) buildings which constitute the bulk of the domestic building stock in low seismicity regions, including Australia. These buildings were designed to resist forces, not the displacements, caused by earthquake ground shaking. This project will develop a new displacement-based method for assessing the earthquake resistance of URM buildings. Research outcomes will be in the form of improved analytical methods for the design of new buildings and the seismic assessment and retrofit of existing buildings.Read moreRead less
Displacement-based earthquake design of unreinforced masonry walls in two-way bending. Current design of unreinforced masonry (URM) buildings for earthquake loading is based on checking that the strength of walls and connections exceeds the earthquake-induced inertia forces. Conservative estimates of wall bending strength are used to account for the wide variability in the quality of masonry construction. This project proposes to develop a new "displacement-based" design methodology for URM wa ....Displacement-based earthquake design of unreinforced masonry walls in two-way bending. Current design of unreinforced masonry (URM) buildings for earthquake loading is based on checking that the strength of walls and connections exceeds the earthquake-induced inertia forces. Conservative estimates of wall bending strength are used to account for the wide variability in the quality of masonry construction. This project proposes to develop a new "displacement-based" design methodology for URM walls which is less conservative and more direct, reliable and easier to apply the the force-based method. Hence, this method offers substantical cost savings over current techniques for the assessment of the seismic vulnerability of URM walls in buildings.Read moreRead less
Development of innovative fibre reinforced polymer plating techniques to retrofit existing reinforced concrete structures. The demand for retrofitting reinforced concrete structures in Australia is estimated at $500 million per annum. However, with improved understanding of emerging retrofitting techniques the cost of retrofitting may be reduced. The innovative retrofitting techniques investigated in this project will address the shortcomings of existing techniques with particular emphasis on th ....Development of innovative fibre reinforced polymer plating techniques to retrofit existing reinforced concrete structures. The demand for retrofitting reinforced concrete structures in Australia is estimated at $500 million per annum. However, with improved understanding of emerging retrofitting techniques the cost of retrofitting may be reduced. The innovative retrofitting techniques investigated in this project will address the shortcomings of existing techniques with particular emphasis on the ductility of the system which is a particularly important characteristic when retrofitting for earthquake or explosive loads. It also reinforces Australia's high international standing in developing innovative retrofitting alternatives using advanced materials in this rapidly developing area.Read moreRead less
Development of Novel Metaconcrete to Resist Impulsive Loads. This project aims to develop innovative metaconcrete for structural protection by utilising the concept of phononic crystals and metamaterials which has been recently developed by physicists. Traditional construction materials are used in new structural forms to mitigate dynamic loading effects by exploiting the unique characteristics of the proposed metaconcrete. Theoretical, numerical and experimental methods will be used to derive t ....Development of Novel Metaconcrete to Resist Impulsive Loads. This project aims to develop innovative metaconcrete for structural protection by utilising the concept of phononic crystals and metamaterials which has been recently developed by physicists. Traditional construction materials are used in new structural forms to mitigate dynamic loading effects by exploiting the unique characteristics of the proposed metaconcrete. Theoretical, numerical and experimental methods will be used to derive the best performing metaconcrete and verify its static and dynamic load resistant capacities. The expected outcomes of the project will lead to innovative extreme-loading resistant designs and provide significant benefit to the Australian construction industry, general public and economy.Read moreRead less
Retrofitted brick masonry buildings - are they reliable over the long term? The aim of this project is to investigate the long-term reliability of a new earthquake strengthening technique for brick buildings. The technique involves the use of fibre reinforced polymer (FRP) strips as reinforcement for brick walls and has been shown to give substantial instantaneous strength increases. However, no research has been undertaken to ensure that the improved strength is sustained over the remaining lif ....Retrofitted brick masonry buildings - are they reliable over the long term? The aim of this project is to investigate the long-term reliability of a new earthquake strengthening technique for brick buildings. The technique involves the use of fibre reinforced polymer (FRP) strips as reinforcement for brick walls and has been shown to give substantial instantaneous strength increases. However, no research has been undertaken to ensure that the improved strength is sustained over the remaining life of the building. The only related research involves reinforced concrete which suggests that a reduction of at least 33 per cent could be expected. Hence, this project will quantify the long-term strength of FRP reinforced brickwork to enable engineers to safely apply this new cost-effective retrofit technique.Read moreRead less
Development of efficient, robust and architecturally-flexible structural systems using innovative blind-bolted connections. The aim of the proposed project is to develop structural systems that have sufficient stiffness, strength, and ductility to withstand code-specified loads and that will be competitive in the marketplace. The development of demonstrable cost-effective structural systems is essential if these types of systems are to be widely adopted in practice, thus allowing Australian manu ....Development of efficient, robust and architecturally-flexible structural systems using innovative blind-bolted connections. The aim of the proposed project is to develop structural systems that have sufficient stiffness, strength, and ductility to withstand code-specified loads and that will be competitive in the marketplace. The development of demonstrable cost-effective structural systems is essential if these types of systems are to be widely adopted in practice, thus allowing Australian manufacturers of blind bolts and steel tubes to achieve a greater market share.Read moreRead less
Composite tubular construction subject to impact and blast loading. This project will advance the knowledge of composite tubular members and connections under impact and blast loading. It will provide confident design methodology against impact and blast loading for buildings designated as prominent targets or items of critical infrastructure, to save lives and reduce losses.