Blast performance parameters quantification of reinforced masonry walls

钢筋砌体墙爆破性能参数量化

• 批准号: 431150-2012
• 负责人: ElDakhakhni, Wael
• 金额: $ 7.29万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618099
• 关键词: Blast; performance; parameters; quantification; reinforced

The proposed research project aims at providing critically needed performance data of Reinforced Masonry(RM) building components under blast. The research is structured into three complementing Focus Areas thatcover a wide range of experimental and analytical work. Focus Area I aims at providing basic understanding ofthe behaviour of RM infill and shear walls under quasi-static out-of-plane loading. The goal of Focus Area II isto provide experimental evidence of the performance of RM walls under realistic blast loading conditions withdifferent pressure and impulse combinations to simulate real explosion scenarios. Both Focus Areas I and IIinclude a significant amount of analytical work to simulate wall behaviour. The analytical work involvesdeveloping wall resistance functions, design charts, and single- and multi-degree-of-freedom models. Theresearch work in Focus Area III complements the work in Focus Areas I and II through use of numericalmethods to model the blast wave-wall interaction and analyse the dynamic response of the walls tested in FocusArea II. In addition, using the experimentally calibrated numerical models, an extensive wall blast performancedatabase will be generated to cover different scenarios others than those tested in Focus Area III. Finally, theexperimental, analytical, and numerical model results will be integrated into a performance assessment tool thatwill facilitate rapid screening and performance evaluation of RM components under different accidental anddeliberate explosion scenarios.The research will provide unique training to four Ph.D., four Masters, four undergraduate summer researchassistants, and two technicians in different areas related to masonry wall behaviour, response to blast loads,structural dynamics, hardening strategies, experimental testing, and advanced analytical and numericalmodeling techniques. As such, the proposed research will contribute to urgently needed Canadian expertise inthe area of structural performance evaluation under blast loads.

拟议的研究项目旨在提供急需的钢筋砖石(RM)建筑构件在爆炸作用下的性能数据。这项研究分为三个相辅相成的重点领域，涵盖广泛的实验和分析工作。重点领域I旨在提供在准静态平面外荷载作用下RM填充和剪力墙性能的基本理解。焦点区域II的目标是提供真实爆炸载荷条件下不同压力和脉冲组合的RM墙性能的实验证据，以模拟真实的爆炸场景。重点领域I和II都包括大量的分析工作来模拟墙的行为。分析工作包括开发墙体阻力函数、设计图以及单自由度和多自由度模型。焦点区域III的研究工作是对焦点区域I和II的研究工作的补充，通过使用数值方法来模拟爆炸波与墙的相互作用，并分析在焦点区域II测试的墙体的动态响应。此外，使用经实验校准的数值模型，将生成一个广泛的墙爆炸性能数据库，以涵盖焦点区域III测试的不同场景。最后，实验、分析和数值模型结果将被集成到性能评估工具中，该工具将有助于快速筛选和评估不同意外和故意爆炸场景下的RM部件。该研究将为4名博士、4名硕士、4名本科生暑期研究助理、以及两名不同领域的技术人员，涉及砖墙行为、对爆炸荷载的反应、结构动力学、加固策略、实验测试以及先进的分析和数值建模技术。因此，拟议的研究将有助于加拿大在爆炸荷载下结构性能评估领域迫切需要的专业知识。