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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 Resistance Demand of Reinforced Concrete Frames under Catenary Mechanism
Author(s): Yi Li, Xinzheng Lu, Hong Guan, and Lieping Ye
Publication: Structural Journal
Appears on pages(s): 1225
Keywords: catenary mechanism; energy conservation principle; progressive collapse; reinforced concrete frame; resistance demand
Abstract:Progressive collapses are resisted by the catenary mechanism in reinforced concrete (RC) frame structures undergoing large deformations. Research to date has mainly focused on the nonlinear dynamic progressive collapse resistance demand of this type of
structures under the beam mechanism (that is, for small deformations), and that the catenary mechanism is lacking. As a first attempt, this study establishes a dynamic amplification factor for evaluating the resistance demands of RC frames under the catenary
mechanism. To achieve this, an energy-based, theoretical framework is proposed for calculating the aforementioned demands. Based on this framework, the analytical solution for the collapse resistance demands of regular RC frames under the catenary
mechanism is readily obtained. Numerical validation indicates that
the proposed equations can accurately describe the progressive collapse demand of RC frames undergoing large deformations.
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