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The mitigation of the progressive collapse of a 9-storey structure incorporating United States Department of Defence guidelines

机译：纳入美国国防部的9层楼结构的逐步崩溃的减轻

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Many failures such as those due to blast, impact, wind pressure and earthquakes can be caused by the progressive collapse in structures. This paper will discuss different mitigation methods for progressive collapse corresponding numerical analysis for a 9-storey reinforced concrete structure by SAP2000 following severe initial damage. After removing specified critical columns the demand capacity ratio (DCR) of the members will be measured by the latest revision of Department of Defence of the United States (DOD) guideline, which is one of the most complete sets of criteria in terms of providing useful guidance to the designers in 2013. The structure has a potential of progressive collapse if DCR is more than 2 for symmetrical structure. Two approaches will be presented to diminish the potential of progressive collapse in the structures. They are adequate increase in the size of structural elements throughout the structure and establishing of bracing system at the top level. To gain the best method among all that have been presented for the mitigation of progressive collapse, providing Bracing at the top level is the most effective and economical method.
机译：许多失败，例如由于爆炸，冲击，风压和地震而导致的失败可能是由结构的逐步崩溃引起的。本文将讨论SAP2000在严重初始损伤后SAP2000逐步折叠相应数值分析的不同缓解方法。除了指定的关键栏目之后，成员的需求比率比率（DCR）将通过美国（DoD）指南的最新修订来衡量，该指南是提供有用的最完整标准之一2013年设计人员的指导。如果DCR超过2对于对称结构，则该结构具有逐渐崩溃的潜力。将提出两种方法以减少结构中逐渐崩溃的潜力。它们在整个结构中具有足够的结构元素的尺寸，并在顶层建立支撑系统。为了获得逐步崩溃的缓解，在逐步崩溃的所有方法中获得最佳方法，在顶级提供支撑是最有效和最经济的方法。

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