Structures Congress 2020
Partial Damage Distribution and Progressive Collapse of Buildings
Publication: Structures Congress 2020
ABSTRACT
The prevailing analysis approach in the field of disproportionate collapse of structures is the alternate path method (APM). This method adopts the notion of a complete removal of a key load-bearing component of the system, such as a column or a shear wall, and investigates the capability of the remaining structure to bridge over the loss of this component. Though it offers a practical and efficient tool for the assessment of structural robustness, the complete column loss scenario is a rather unrealistic idealization of damage initiation. This study expands on previous work done by the authors in the field of structural robustness and applies a partial distributed damage method (PDDM) in 3D multi-story steel framed and concrete composite buildings. This method assumes that damage is being distributed in more than one components, as a common output of real-case extreme events. Using advanced nonlinear finite element modeling, this work applies a PDDM scenario in a prototype structural system and evaluates its mechanical performance, making direct comparisons with the APM with regards to the governing collapse mechanism, structural capacity, and damage progression path.
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Structures Congress 2020
Pages: 52 - 62
Editor: James Gregory Soules, CB&I Storage Tank Solutions
ISBN (Online): 978-0-7844-8289-6
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© 2020 American Society of Civil Engineers.
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Published online: Apr 2, 2020
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