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Effect of Column-to-Beam Strength Ratio on Seismic Performance of RC Moment Frames

by Joseph M. Bracci,
Kara L. Dooley,



Document Type: Proceeding Paper

Part of: Structures 2001: A Structural Engineering Odyssey

Abstract:

Reinforced concrete (RC) moment frames are often used in building applications. During strong earthquake excitations, such buildings have been subject to soft-story or column sidesway failure mechanisms. These mechanisms are characterized by the development of plastic hinges at all columns or joints of a story, rendering the structure unstable under further lateral loading. Previous research efforts have shown that the column-to-beam flexural strength ratio at the joints in RC frame buildings plays a significant part in determining the building's response to seismic loading, including whether or not a story mechanism will form.

Subject Headings: Reinforced concrete | Concrete frames | Concrete columns | Seismic tests | Seismic loads | Lateral loads | Beams

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