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Nonlinear dynamic analysis on progressive collapse resistance of a multi-story reinforced concrete building with slab
Published in Konstantinos Papadikis, Chee S. Chin, Isaac Galobardes, Guobin Gong, Fangyu Guo, Sustainable Buildings and Structures: Building a Sustainable Tomorrow, 2019
S. Nyunn, J. Yang, F.L. Wang, Q.F. Liu
Progressive collapse is the situation in which initial local damage results in disproportionate collapse of the whole structure or a major part of it. Researchers and design engineers began to notice the risk of progressive collapse after the partial failure of the Ronan Point building in London in 1968 (Byfiel et al. 2014). In addition to this, other serious collapses have also been found in the past such as the U.S. Marine Barracks (Beirut 1983), the A.P. Murrah Federal Building (Oklahoma 1995) and World Trade Center (New York 2001). These instances have demonstrated that conventional designed buildings may not be robust enough to withstand local failure in order to mitigate structural collapse (Adam et al. 2018). Therefore, several design methods for progressive collapse resistance have been proposed in different design codes and guidelines such as ASCE (ASCE 2014), Eurocode (BS EN 1991-1-7: 2006), the General Service Administration (GSA 2013) and Department of Defense (DOD 2016).
Safe and comfortable
Published in Goman Wai-Ming Ho, Ruby Kitching, Anita Siu, Christina Yang, Arup's Tall Buildings in Asia, 2017
This indicated to Arup that the structure had to remain sufficiently intact and resist progressive collapse during a fire. Progressive collapse is where failure of a single structural member or connection causes, say, a whole portion of the building to fail and that the excessive unsupported weight of this causes subsequent failures, leading eventually to the collapse of the whole building.
Time-Variant Robustness of Aging Structures
Published in Dan Frangopol, Yiannis Tsompanakis, Maintenance and Safety of Aging Infrastructure, 2014
Fabio Biondini, Dan M. Frangopol
Local damage or failure of a member usually involves a redistribution of internal forces among the other members of the structural system. As a consequence, if the amount of redistributed forces is large enough, other members may fail and the sequence of local failures may propagate throughout the overall system until its collapse is reached. A possible way to avoid this type of progressive collapse is to design robust structures for which alternate load paths are possible and the most critical members are properly protected from accidental- or environmental-induced damage.
Progressive collapse of reinforced concrete buildings considering flexure-axial-shear interaction in plastic hinges
Published in Cogent Engineering, 2021
Meshal A. Abdulsalam, Muhammad Tariq A. Chaudhary
Progressive collapse is the spread of local failure of a structural element that results in the collapse of the entire structure or a disproportionately large part of it. Mid-rise reinforced concrete residential buildings designed only for gravity loads and having open ground floor due to local building code requirements seems to be vulnerable to progressive collapse as the columns are exposed to potential damage from accidental or deliberate abnormal loadings such as gas explosion, vehicle impact, or terrorist attack. As these buildings are designed for gravity loads only, therefore the structural configuration is not robust enough to redistribute the gravity load after partial removal of a vertical support. Additionally, such buildings are located in high population density neighborhoods; therefore, the social and economic impact of their progressive collapse could be disproportionally high. The objective of this study is to evaluate the vulnerability of such buildings to progressive collapse and to suggest cost-effective remedial measures to enhance their progressive collapse resistance.
Terrorism risks, chasing ghosts and infrastructure resilience
Published in Sustainable and Resilient Infrastructure, 2020
The evidence to date shows, then, that no modern or well-designed tall or large building in the West has fully collapsed as a result of an IED. Moreover, experience in the U.K. shows that intense blast loadings cause little structural damage to RC or steel framed buildings designed to modern codes. Most damage occurs to the building facade, particularly to glazed areas (Smith & Rose, 2002). The bombing of the Murrah Building in Oklahoma City caused partial collapse of the building due to the disintegration of a critical column. If the building had been designed as a special moment frame for earthquake design, however, the loss of floor area would have been reduced by between 50–80% (Corley et al., 1998). Damage to the Pentagon on 11 September 2001 was contained by the structures’ robustness to progressive collapse, namely, its continuity, redundancy and energy-absorbing capacity (ASCE, 2003). Progressive collapse provisions are now being incorporated into U.S. design codes (GSA, 2013; UFC 4-020-01, 2005). However, with the exception of extraordinarily large blasts, a moment resisting RC or structural steel frame designed and detailed for alternative load paths should provide significant structural resistance to prevent collapse (Grant & Stewart, 2015). This is confirmed by Song and Sezen (2013) and Sezen, Song, and Giriunas (2014) where columns were removed from steel framed buildings that were soon to be demolished without causing progressive collapse.
FE modelling progressive collapse assessment of steel moment frames-parametric study
Published in Australian Journal of Structural Engineering, 2022
Mohamed Amine Abid, Abdelouafi El Ghoulbzouri, Lmokhtar Ikharrazne
The partial or total collapse of many buildings has occurred since the abnormal events that could trigger the progressive collapse were not considered in the structural design. For this reason, ASCE7, DOD has developed criteria and guidelines for designers to enhance the resistance of both existing and new buildings against progressive collapse. NBC (NBCC 2005) providing several recommendations for structural integrity and mechanisms to resist progressive collapse. Besides, GSA afforded detailed guidelines for the design against the progressive collapse of existing and new buildings.