Seismic Response of Connections in Two‐Bay R/C Frame Subassemblies
Publication: Journal of Structural Engineering
Volume 115, Issue 11
Abstract
The behavior of beam‐to‐column connections has been studied in the past by testing individual connection subassemblies. In such tests, the beams are allowed to elongate freely when subjected to large deformation reversals. In a real building, however, the beams may be partially restrained against such elongation. In this investigation, the behavior of connections is studied under earthquake‐type loading by testing indeterminate frame subassemblies. Any restriction to the elongation of the main beams and the accompanying axial compression are observed to affect the response of connections. It increases joint shear in both interior and exterior connections and reduces the column‐to‐beam flexural strength ratio. The energy dissipation is not affected, but the lateral load resistance increases significantly. The loss of stiffness in the indeterminate subassembly is more controlled and gradual compared to that observed in individual connection tests. Based on the observed mechanism of lateral load resistance and the observed behavior of connections, a procedure is presented to account for the presence of axial compression in the main beams in the design of beam‐to‐column connections.
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References
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 115 • Issue 11 • November 1989
Pages: 2829 - 2844
Copyright
Copyright © 1989 ASCE.
History
Published online: Nov 1, 1989
Published in print: Nov 1989
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