芯コンクリートを有するRC柱の力学的特性と設計法

概要

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This paper describes a mechanical behavior of a proposed new system reinforced concrete column which has core concrete strengthened by a thin steel spiral tube. The thin steel spiral tube used here is spirally wound-up thin steel band plate and it has no strength and stiffness in the axial direction. From experimental results of both an uniaxial compressive test of the core concrete and a biaxial loading test of lateral and axial load to specimens of the new system RC column, we obtained the following characteristics: Strength of the core concrete increases by confining effect of the steel tube, and accurately corresponds with Richart's equation. As for the proposed RC column, when the encased concrete collapsed, the core concrete does not decrease in strength, and has enough supporting ability to prevent the column from axial crushing under earthquake load.
一般社団法人日本建築学会の論文
2000-03-20