Seismic Resistance of Steel-Tubed High-Strength Reinforced-Concrete Columns
Publication: Journal of Structural Engineering
Volume 125, Issue 5
Abstract
In this paper, experimental investigation of cyclic response of steel-tubed high-strength reinforced-concrete (STHSRC) columns is presented. An STHSRC column is an ordinary reinforced-concrete column where most of the transverse reinforcement is in the form of a thin steel tube. The steel tube confines the whole concrete section and provides high shear resistance. Steel-tubed columns are more ductile and have higher lateral resistance than ordinary reinforced-concrete columns and concrete-filled tubed columns, even under high axial compressive loads. In this paper, the seismic behavior of STHSRC columns is presented. Six full-scale columns were experimentally investigated under constant axial loads and cyclic lateral load/displacement. Test results were compared with those of ordinary high-strength reinforced-concrete columns. Based on the findings of this research, STHSRC columns exhibit higher lateral strength and ductility than ordinary reinforced-concrete columns. Unlike that of ordinary reinforced-concrete columns, the ductility of STHSRC columns is not sensitive to the presence of axial compressive loads.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 125 • Issue 5 • May 1999
Pages: 485 - 494
History
Received: May 21, 1998
Published online: May 1, 1999
Published in print: May 1999
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