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报告题目：Experimental and Numerical Study of Composite Structural Panels Subjected to Windborne Debris Impact and Their Strengthening for Climate Change Adaptation

报告人：Prof. Hao Hong     澳大利亚工程院院士

    Curtin University，Australia

时间：2017年4月20日上午09：30

地点：bt365官网亚洲版二层会议室

个人简介：

Hong Hao received BEng from Tianjin University, China, MSc and PhD from the University of California at Berkeley, USA. Currently he is John Curtin Distinguished Professor, Director of Research Centre for Infrastructure Monitoring and Protection in Curtin University and director of TJU-Curtin Joint research centre of Structural Monitoring and Protection. He has more than 800 technical publications including more than 360 journal papers in earthquake engineering, blast and impact engineering and structural condition monitoring. He is one of the most highly cited researchers in civil engineering in the world with H-Index 49 in Google Scholar, 39 in Scopus and 35 in ISI. He has won more than 20 research, research publication and research supervision awards. He has been invited to give about 50 keynote and many invited presentations in international conferences worldwide. His research results are included in textbooks, adopted in design codes, and used in many construction projects around world. He is the chief editor of International Journal of Protective Structures, and serves in the editorial board of another 10 journals. He was past President of the Australian Earthquake Engineering Society, and has served in many national and international professional committees including expert panel of Australian Research Council. Currently he is Deputy President of the International Association of Protective Structures, Australian Rep in the International Association of Earthquake Engineering, Advisory Board member of Australian Network on Structural Health Monitoring, and the Structural Panel of Engineers Australia WA Division. He is fellow of Australian Academy of Technical Science and Engineering, fellow of Institution of Engineers Australia, fellow of American Society of Civil Engineers, and fellow of International Society of Engineering Asset Management.

ABSTRACT:

With climate changing, more and more natural disasters such as cyclone, hurricane and typhoons take place around the world, which cause tremendous loss and damage. Damages of building structures by windborne debris impacts have been reported in the previous major wind events, and such damages have been increasing owing to the increased wind speed with climate change. The windborne debris usually imposes localized impact loading on the building envelops, which creates a dominant opening, causing internal pressure increase and resulting in roof lifting up and building collapse. To withstand the impact of such extreme events, climate adaptation engineering solutions and technique need to be provided or improved for buildings and infrastructure protection. In this study, impact resistance capacities of common composite structural panels used as building envelopes were studied. These include structural insulated panels (SIP) with EPS core (extended polystyrene) sandwiched by flat metal skins, corrugated metal skins, fiber cement skins, and OSB skins, respectively. A series of laboratory tests were carried out. The influence of various impact locations, impact velocities, specimen materials, configurations and boundary conditions on their performance has been investigated. The penetration resistance capacity of the specimens subjected to windborne debris impact was assessed. Numerical models were also developed in LS-DYNA to simulate the response and damage of the specimens under windborne debris impact. The validated numerical models were used to conduct intensive numerical simulations to build fragility curves for subsequent reliability analysis of the damage to windborne debris impact. In addition, to improve the penetration resistant capacities of the structural insulated panels, the existing OSB panels were strengthened by using various materials such as basalt fibre, thermoplastic sheet, and glass fibre sheet. The corresponding experimental and numerical studies were also carried out to investigate the strengthening performance. Possible strengthening method is suggested.