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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 and distribution of 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: A Simple Means for Reducing the Risk of Progressive Collapse
Author(s): Yihai Bao, H.S. Lew, Fahim Sadek, and Joseph Main
Publication: Concrete International
Appears on pages(s): 33-38
Keywords: finite element method, instrumentation, seismic performance, strain localization
Abstract:In general, the negative bending moment capacity of beam end sections is larger than the positive bending moment capacity. Under a column loss scenario, the bottom reinforcing bars are thus likely to fracture before the top reinforcing bars. Research presented in this article investigates the effectiveness of a technique for enhancing the ductility at the beam end sections. The research shows that debonding of the reinforcing bars from the surrounding concrete delays the fracture of bars and enhances ductile behavior. The proposed approach therefore shows promise as a method for enhancing the resistance of reinforced concrete frames to disproportionate collapse.
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