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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Progressive Collapse of Flat Plate Structures
Author(s): Neil M. Hawkins and Denis Mitchell
Publication: Journal Proceedings
Appears on pages(s): 775-808
Keywords: concrete slabs; collapse; connections; failure; flat concrete plates; punching shear; shear strength; structural analysis.
Abstract:Factors influencing the initiation and propagation of progressive collapse in flat plate structures are examined. The mechanism most likely to trigger such collapses is a punching strength are examined with particular reference ot the influences of rotational demands, edge restraints, age at loading, and one-way as opposed to two-way bending. Progressive collapses propagate because of an inadequate moment transfer capacity at surrounding columns. The factors affecting that capacity are examined and the desirability of continuous bottom reinforcement through the column demonstrated. The merits of our possible defenses against progressive collapse are evaluated; higher live loadings, integral beam stirrup reinforcement, continuous bottom reinforcement, and the provision of a tensile membrane. Recommendations are made for calculations of the strength provided by a tensile membrane and procedures for detailing that membrane.
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