Abstract
This paper reports the experimental results and their discussion of reinforced concrete columns focusing on the effect of biaxial lateral loading on structural performance. Three specimens were made with high-strength concrete and high-strength steel bars, and two specimens were subjected to bilateral deformations hence one specimen was subjected to Unilateral deformation. Both specimens subjected to bilateral deformations began shortening just after the occurrence of compression failure of cover concrete and showed tremendously poor deformation capacity. Test and finite fiber analytical results concerning the shortening and restoring force showed excellent correlation. Finally, the paper clearly ・ describes the factors causing deterioration in strength and deformation capacity.
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