2軸曲げを受ける鉄筋コンクリート長柱の弾塑性安定に関する実験的研究 (その1)

Abstract

The behavior of pin-ended reinforced concrete columns subjected to biaxially eccentric loads isinvestigated experimentally and theoretically. Seven short column specimens, whose column lengthto section depth ratio were 5, with 12x12 cm square cross sections containing eight reinforcing barswere loaded monotonically at various eccentricities. It is observed that, from data of longitudinalstrain gages, the plane sections ramain plane after biaxial bending and the maximum compressivestrain at crushing of concrete reaches 0.005. Computed results of load-deformation response of acolumn, based on the analytical method presented by the authors in earlier paper, are found to agreewell with the test results. Two analytical methods, proposed by Bresler and Ramamurthy, forcalculating the ultimate loads of biaxially loaded columns are also examined.