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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 Damage Indicator for Reinforced Concrete Frames
Author(s): S. Toussi, J.T.P. Yao, and W.F. Chen
Publication: Journal Proceedings
Appears on pages(s): 260-267
Keywords: Bauschinger effect; bond stress; damage; deformation; dynamic
loads; earthquakes; frames; hysteresis, reinforced concrete.
Abstract:A new damage indicator is introduced for reinforced concrete structural frames subjected to earthquake excitations. It is desirable to define a new damage indicator because of the unique behavior of reinforced concrete structures during strong motion earthquakes. Although several damage indicators exist, it is felt that these parameters in their current forms cannot be used effectively to predict the damage state in an existing structure. The new damage index, called slope ratio, is related to the apparent features of the identified load-deflection relationships of two one-tenth scale and ten-story reinforced concrete structural frames which were subjected to repeated earthquake loads in the laboratory. Results of several seismic and cyclic load tests are reviewed to study whether or not the features of the new damage indicator are present in these data in the form of measured load-deflection relationships.
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