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Retrofitting of RC Slabs Against Explosive Loads

Transactions of Tianjin University 2006年第B09期12卷 88-93页

作者： WU Chengqing 0EHLERS Deric John XIA Shaohua School of Civil and Environmental Engineering The University of Adelaide Australia Defence Science and Technological Organization Australia

With the increase of terrorist bomb attacks on buildings, there is a need to develop advanced retrofitting techniques to strengthen structures against blast loads. Currently, several guidelines including an Australian version for retrofitting reinforced concrete (RC) structures are available for the design of retrofitting systems against seismic and monotonic loads using steel or fibre reinforced polymer (FRP) plates that can be either adhesively bonded to the surface or near surface mounted to the concrete cover. However, none of these guidelines provide advice suitable for retrofitting structures subjected to blast loads. In this paper, numerical models are used to simulate the performance of retrofitted RC slabs subjected to blast loads. Airblast pressure distributions on the surface of the slabs estimated in a previous study are used as input in the analysis. A material damage model developed previously for concrete and an elastoplastic model for steel bars are employed in this research for modelling reinforced concrete behaviour due to explosive loads. The material models and blast loading are coded into a finite element computer program LS-DYNA3D to do the analysis. With the numerical model, parametric studies are conducted to investigate RC slabs retrofitted by either externally bonded or near-surface mounted plates or GFRP sheets subjected to blast loads. Discussion is made on the effectiveness of the retrofitting system for RC slabs against blast loads.

关键词： retrofit explosion fibre reinforced polymer slab

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Novel hybrid FRP tubular columns for sustainable mining infrastructure:Recent research at University of Wollongong

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International Journal of Mining Science and Technology 2014年第3期24卷 311-316页

作者： Yu Tao Remennikov Alex M. Faculty of Engineering and Information Sciences University of Wollongong

This paper introduces, for applications in the mining industry, an innovative hybrid column form which consists of an inner steel tube, an outer fibre-reinforced polymer(FRP) tube and an annular concrete infill between them. The two tubes may be concentrically placed to produce a section form more suitable for columns, or eccentrically placed to produce a section form more suitable for beams. The FRP is combined with steel and concrete in these hybrid structural members in such a way that the advantages of FRP are appropriately exploited while its disadvantages are minimized. As a result, these hybrid members possess excellent corrosion resistance as well as excellent ductility and seismic resistance. This paper summarizes existing research on this new form of structural members, and discusses their potential applications in mining infrastructure before presenting a summary of the recent and current studies at University of Wollongong(UOW) on their structural behaviour and design.

关键词： Hybrid column Tubular column fibre reinforced polymer Sustainable mining infrastructure

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ISIS Technologies for Smart Civil Engineering Infrastructure

ISIS Technologies for Smart Civil Engineering Infrastructure

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第三届全国FRP学术交流会议

作者： Aftab A.Mufti Kenneth W.Neale President ISIS Canada University of Manitoba 96 Dafoe Road Winnipeg Manitoba Canada R3T 2N2 Canada Research Chair in Advanced Engineered Material Systems Department of Civil Engineering University of Sherbrooke Sherbrooke Quebec Canada J1K 2R1

＜正＞ For more than a century, important civil engineering structures such as bridges, high-rise buildings, dams and marine platforms have contained iron or steel as the reinforcement for concrete or wood （ISIS Canada Strategic Plan, 2000）. The useful lives of such structures have often been severely limited by the corrosion of this ferrous component. Much thought has been given in recent years to constructing structures that are lighter, stronger and non-corrosive. These innovative structures are new and for these to be accepted by the engineering community monitoring is mandatory. ISIS Canada has been developing such structures and monitoring them. In this paper, innovative bridge decks that have been implemented is described.

关键词： second-generation steel-free deck slab arching action bridge deck slab structural health monitoring fibre reinforced polymer FRP fibre optic sensor FOS

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ISIS Technologies for Smart Civil Engineering Infrastructure

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工业建筑 2004年第Z1期34卷 -页

作者： Aftab A. Mufti President ISIS Canada University of Manitoba 96 Dafoe Road Winnipeg Manitoba Canada R3T 2N2 Canada Research Chair in Advanced Engineered Material Systems Department of Civil Engineering University of Sherbrooke Sherbrooke Quebec Canada J1K 2R1

For more than a century, important civil engineering structures such as bridges, high-rise buildings, dams and marine platforms have contained iron or steel as the reinforcement for concrete or wood (ISIS Canada Strategic Plan, 2000). The useful lives of such structures have often been severely limited by the corrosion of this ferrous component. Much thought has been given in recent years to constructing structures that are lighter, stronger and non-corrosive. These innovative structures are new and for these to be accepted by the engineering community monitoring is mandatory. ISIS Canada has been developing such structures and monitoring them. In this paper, innovative bridge decks that have been implemented is described.

关键词： second-generation steel-free deck slab arching action bridge deck slab structural health monitoring fibre reinforced polymer FRP fibre optic sensor FOS

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