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Strength of Biaxially Loaded SRC Columns

by Shosuke Morino, Mie Univ, Tsu, Japan, Mie Univ, Tsu, Japan,
Chiaki Matsui, Mie Univ, Tsu, Japan, Mie Univ, Tsu, Japan,
Hidehiko Watanabe, Mie Univ, Tsu, Japan, Mie Univ, Tsu, Japan,



Document Type: Proceeding Paper

Part of: Effects of Damage and Redundancy on Structural Performance

Abstract:

The paper presents the results of an experimental study on the elasto-plastic behavior of 'Steel reinforced concrete (SRC)' columns subjected to biaxially eccentric compression load. The specimen has a 160 multiplied by 160 mm square section containing a rolled H-section, H-100 multiplied by 100 multiplied by 6 multiplied by 8, encased in concrete. Effects of eccentricity, angle between load point and major axis, and slenderness ratio on the load-deflection behavior and the maximum load carrying capacity are investigated. It is observed in the results of test and analysis that a sharp peak appears on the load-deflection curve of a short column because of a concrete crush, while P DELTA effect is more pronounced in a long column and a gradual unloading takes place. In some cases, the deflection corresponding to the strong axis bending stops increasing in the large deflection range, and the column behaves as if it is subjected to the uniaxial bending.

Subject Headings: Reinforced concrete | Biaxial loads | Dynamic structural analysis | Steel structures | Concrete columns | Bending (structural) | Structural deflection

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