Blast load effects and retrofit options for reinforced concrete columns

钢筋混凝土柱的爆炸荷载效应和改造方案

• 批准号: 382780-2013
• 负责人: Braimah, Abass
• 金额: $ 1.53万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=572884
• 关键词: Blast; load; effects; retrofit; options

The terrorist attacks of September 11 and the foiled terrorist action ("Toronto 18") in Canada have drastically increased awareness of the possibility of terrorists attack in Canada. Now more than ever, Federal Government departments and owners of "iconic" structures are seeking to understand the vulnerabilities of their infrastructures to terrorist action and what can be done to increase the survivability of these structures and their occupants. Whereas a number of efforts have been made to limit access to explosive materials for illegitimate use and to incorporate physical security into building construction and upgrades, little has been done in Canada to investigate the response of infrastructure to blast loading. Most of the research information available to date is from the cold-war era and was targeted at military-type infrastructures. Today, however, accidental explosions and terrorist attacks in urban areas primarily affect civilian infrastructure that was built for aesthetics, lightweight, and economy and thus lack resistance against blast loading. The proposed research program combines the benefits of live explosive testing and computational fluid dynamics and finite element modelling techniques to investigate the effects of blast loading on the reinforced concrete (RC) columns. Both stand-off and contact explosive charge effects on RC columns will be studied and cost effective retrofit design methods investigated to mitigate the hazards associated explosions. The numerical modeling will assist in detailed parametric analyses to establish the effects of parameters influencing the response RC columns to blast loading. The proposed research program will train 5 graduate students in the areas of blast load effects, structural response under extreme loading, material response under high-strain rates, and design and analysis of infrastructures under blast loading. The research program will also offer designers and researchers new and novel tools to design cost effective critical infrastructures to resist blast loading without failure.

9月11日的恐怖袭击以及加拿大挫败的恐怖行动（“多伦多18”）大大提高了人们对加拿大恐怖分子袭击的可能性的认识。现在，联邦政府部门和“标志性”结构的所有者都在寻求了解其基础设施对恐怖行动的脆弱性，以及可以采取什么措施提高这些结构及其居民的生存能力。 尽管已经做出了许多努力，以限制爆炸性材料以供非法使用，并将物理安全纳入建筑施工和升级，但在加拿大，几乎没有做任何事情 研究基础设施对爆炸载荷的响应。迄今为止可用的大多数研究信息来自冷战时代，针对军事型基础设施。然而，如今，城市地区的意外爆炸和恐怖袭击主要影响为美学，轻量级和经济建造的平民基础设施，因此缺乏抵抗爆炸的抵抗。 拟议的研究计划结合了实时爆炸性测试和计算流体动力学和有限元建模技术的好处，以研究爆炸负荷对钢筋混凝土（RC）列的影响。将研究对RC色谱柱的对峙和接触式爆炸费效应，并研究了成本效益的改造设计方法，以减轻相关爆炸的危害。数值建模将有助于详细的参数分析，以建立影响响应RC列对爆炸加载的参数的影响。 拟议的研究计划将培训5位研究生的爆炸负荷效果，结构性 在极端负载下的响应，高材料速率下的材料响应以及设计和分析 爆炸加载下的基础设施。该研究计划还将为设计师和研究人员提供新的和新颖的工具，以设计成本有效的关键基础设施，以抵抗爆炸加载而不会失败。