Parametric Analysis of Progressive Collapse in High-rise Buildings PDF Download
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Author: Taras Gamaniouk
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
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Book Description
Progressive collapse has become a topic of interest in recent years leading to a greater focus on the resilience of structures. The propagation of a local failure can become catastrophic and lead to multiple deaths, injuries and destruction of property. These types of events have been predominant in mid to high-rise buildings under both accidental and intentional circumstances. The dire consequences associated with these types of buildings have fueled research efforts into preventative measures for progressive collapse. Three main design methods have been implemented for the design of progressive collapse: tie forces, enhanced local resistance and alternate load path. Each method features its own advantages and disadvantages; however, the alternate load path is currently the preferred procedure as it is accurate and capable of dealing with complex systems. This method is investigated in detail with a specific focus on nonlinear dynamic analysis. The technique is applied for three different structural systems which are commonly used for high-rise buildings: moment frames, braced frames and truss tube systems. A variety of 2D structural models are analysed for their performance under progressive collapse conditions with variable building parameters. The results of the investigation infer that taller buildings are inherently better at preventing progressive collapse as the load is diminished throughout the building allowing less plastic hinges to form. This result was common in all three structural models with the braced frames exhibiting a better structural response to local failure in comparison to moment frame buildings. The study identifies the advantage of implementing hybrid structural frames for the prevention of collapse in high-rise buildings. Integration of moment frames for the lower stories of buildings is shown to be an effective mitigation method for progressive collapse.
Author: Taras Gamaniouk
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
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Book Description
Progressive collapse has become a topic of interest in recent years leading to a greater focus on the resilience of structures. The propagation of a local failure can become catastrophic and lead to multiple deaths, injuries and destruction of property. These types of events have been predominant in mid to high-rise buildings under both accidental and intentional circumstances. The dire consequences associated with these types of buildings have fueled research efforts into preventative measures for progressive collapse. Three main design methods have been implemented for the design of progressive collapse: tie forces, enhanced local resistance and alternate load path. Each method features its own advantages and disadvantages; however, the alternate load path is currently the preferred procedure as it is accurate and capable of dealing with complex systems. This method is investigated in detail with a specific focus on nonlinear dynamic analysis. The technique is applied for three different structural systems which are commonly used for high-rise buildings: moment frames, braced frames and truss tube systems. A variety of 2D structural models are analysed for their performance under progressive collapse conditions with variable building parameters. The results of the investigation infer that taller buildings are inherently better at preventing progressive collapse as the load is diminished throughout the building allowing less plastic hinges to form. This result was common in all three structural models with the braced frames exhibiting a better structural response to local failure in comparison to moment frame buildings. The study identifies the advantage of implementing hybrid structural frames for the prevention of collapse in high-rise buildings. Integration of moment frames for the lower stories of buildings is shown to be an effective mitigation method for progressive collapse.
Author: Daigoro Isobe
Publisher: Butterworth-Heinemann
ISBN: 0128130423
Category : Technology & Engineering
Languages : en
Pages : 226
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Book Description
Provides a new method for analysing collapse behaviours of buildings under various scenarios, such as impact, fire, blast demolition, earthquake, and tsunami. The analysis of the vulnerability of buildings against progressive collapse is a challenging task. Progressive Collapse of Structures: Numerical Codes and Applications provides a variety of numerical analysis tools and methods which allow engineers to simulate structural collapse behavior during all stages of the process. This book covers methods such as adaptively shifted integration (ASI) and ASI-Gauss techniques. Algorithms are supplied to simulate member fracture and contact behaviors. The author also supplies various numerical examples including case studies from the World Trade Center (WTC) towers in New York City, Nuevo Leon buildings in Mexico, and the collapse of the Canterbury Television (CTV) building in New Zealand. Discusses algorithms for simulating fracture and contact behaviors of structural members Covers fire-induced progressive collapse analyses of high-rise towers, seismic pounding analysis of adjacent buildings, blast demolition analysis of steel-framed structures, and many more Includes numerical codes that supply highly accurate solutions with less memory use and small computational cost
Author: Geoffrey Mays
Publisher: Thomas Telford
ISBN: 9780727720306
Category : Technology & Engineering
Languages : en
Pages : 140
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Book Description
This guide is aimed at all engineers and architects involved in building design, focusing on the importance of constructing buildings which minimise damage to people and property in the event of an explosion.
Author: Ahmad Mohamed Rifat Zanjir
Publisher:
ISBN:
Category : Building failures
Languages : en
Pages :
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Book Description
The investigation of progressive collapse of buildings has been of special interests during the last decade. The aim of this study is to assess the influence of selected design parameters on the vulnerability of structures with flat plates or flat slabs to progressive collapse triggered by the severe damage or failure of a column as a result of accidental or maliciously intended terrorist activity. The variables of frames with two-way slab systems investigated include: the number of stories in buildings (low-, medium- and high-rise buildings), span ratio (the ratio of span lengths in two orthogonal directions), span length for square panels, as well as the effect of having flat plates compared to flat slabs detailed either as ordinary gravity load carrying systems or by following the seismic detailing requirements of the Canadian practice as per CSA A23.3-04. The linear-elastic static analysis method, outlined in the General Services Administration (GSA) guidelines of the US, was employed to conduct a parametric investigation to assess the significance of the design variables considered on progressive collapse potentials of buildings. This involved the computation of demand/capacity ratios (DCR) Higher DCRs were obtained for buildings with increased number of stories and span ratios, while the change in span lengths did not show a clear trend. Also, flat slabs were less vulnerable, and experienced smaller DCRs, than flat plates. Buildings detailed according to the seismic provisions of CSA A23.3-04 were less vulnerable than those detailed without these provisions. However, both slabs with non-seismic and seismic detailing required improvements in terms of the percentage of top and bottom reinforcement and bar lengths, depending on the slab type and the design parameters considered.
Author: Bo Yang
Publisher: Woodhead Publishing
ISBN: 0128222689
Category : Technology & Engineering
Languages : en
Pages : 390
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Book Description
Behaviour of Building Structures Subjected to Progressive Collapse gives in-depth and up-to-date quantitative and numerical analysis of building structures against progressive collapse. It does so at various levels, including bare steel joints, composite joints and sub-assemblages and frames under quasi-static loading conditions. The book provides analysis of the force transfer mechanisms of composite structures and reinforced concrete structures, along with detailed numerical models that shed light on the effects of critical parameters on progressive collapse resistances. It includes direct design methods that take into account various collapse-resisting mechanisms. The collapse of the World Trade Center in New York has spurred extensive experimental study and numerical analysis of the structural behavior of buildings under progressive collapse scenarios. Although design guidelines have been published by governments, most are missing up-to-date numerical and experimental results, quantitative accounts of force transfer mechanisms, and numerical guidelines. Offers in-depth analysis and numerical modeling for building structures against progressive collapse Provides analysis of the force-transfer mechanisms of composite and reinforced concrete structures Gives detailed numerical models that shed light on the effects of critical parameters on progressive resistances Includes direct design methods that take into account various collapse resisting mechanisms Offers a comprehensive reference for progressive collapse analysis and the design of building structures
Author: TianQiao Liu
Publisher: Springer Nature
ISBN: 9819715148
Category :
Languages : en
Pages : 581
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Book Description
Author: Feng Fu
Publisher: Butterworth-Heinemann
ISBN: 0081011210
Category : Technology & Engineering
Languages : en
Pages : 320
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Book Description
The design of tall buildings and complex structures involves challenging activities, including: scheme design, modelling, structural analysis and detailed design. This book provides structural designers with a systematic approach to anticipate and solve issues for tall buildings and complex structures. This book begins with a clear and rigorous exposition of theories behind designing tall buildings. After this is an explanation of basic issues encountered in the design process. This is followed by chapters concerning the design and analysis of tall building with different lateral stability systems, such as MRF, shear wall, core, outrigger, bracing, tube system, diagrid system and mega frame. The final three chapters explain the design principles and analysis methods for complex and special structures. With this book, researchers and designers will find a valuable reference on topics such as tall building systems, structure with complex geometry, Tensegrity structures, membrane structures and offshore structures. Numerous worked-through examples of existing prestigious projects around the world (such as Jeddah Tower, Shanghai Tower, and Petronas Tower etc.) are provided to assist the reader’s understanding of the topic Provides the latest modelling methods in design such as BIM and Parametric Modelling technique Detailed explanations of widely used programs in current design practice, such as SAP2000, ETABS, ANSYS, and Rhino Modelling case studies for all types of tall buildings and complex structures, such as: Buttressed Core system, diagrid system, Tube system, Tensile structures and offshore structures etc.
Author:
Publisher:
ISBN: 9781904482338
Category : Concrete slabs
Languages : en
Pages : 101
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Within the past 40 years, abnormal loadings resulting from natural hazards, design flaws, construction errors, and man-made threats have induced progressive collapse in structures all over the world. As progressive collapse behavior has become more prominent, it has made the necessity for design and analysis tools evident. In effort to provide one of these tools, Applied Science International, Inc. introduced its Extreme Loading® for Structures (ELS®) software, capable of progressive collapse simulation. This research evaluates the effectiveness of Extreme Loading® for Structures as an emerging, nonlinear dynamic analysis software package in modeling progressive collapse scenarios. The ELS® software utilizes the Applied Element Method (AEM) of numerical analysis, separating it from other available software packages. The software and analysis methodology's accuracy are investigated through simulation of two structural implosions. Comparing the predicted response to the documented response, each scenario is evaluated by analyzing the material models, failure criteria, local structural behavior, and global collapse behavior. The two case studies, Crabtree Sheraton Hotel in Raleigh, North Carolina and Stubbs Tower in Savannah, Georgia, each include an experimental and analytical investigation. The experimental investigations include gathering existing structural information, coordinating with the demolition contractor to simulate the implosion sequence, as well as observing and obtaining documentation from the actual event. The analytical investigation utilizes the Extreme Loading® for Structures software to construct a model for each structure, simulate the implosion sequence, and analyze the predicted behavior. To understand the effects of individual modeling parameters on the model's response, a parametric study was completed. Creation of an evaluation matrix allowed for systematic assessment of the parametric study, as well as the individual.
Author: Digesh Joshi
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659207792
Category :
Languages : en
Pages : 188
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Book Description
The interest of Structural engineers is increasing to prevent the progressive collapse of the building. After the collapse of World Trade Center (WTC) Tower many government and private authorities worked on developing design guidelines for progressive collapse resistant structures. Among all the guidelines the U.S. General Service Administration (GSA) and Department of Defense (DoD) is most widely used by structural engineers. Historical background, mechanism, causes and types of progressive collapse is discussed in this book. This book also represents progressive collapse analysis of 4-storey and 10-storey Asymmetrical reinforced concrete (RC) building considering GSA and DoD guidelines. Linear static and dynamic as well as nonlinear static and dynamic analysis is carried out using Alternate Path Method (APM). APM is threat independent method in which critical columns from ground floor and intermediate floor are removed and demand-capacity ratio (DCR) is found out for beams and columns. From the values of DCR potential for progressive collapse is analysed. Different alternatives are explored to mitigate the potential of progressive collapse of buildings.
