鉄筋コンクリート長柱の挙動に及ぼす載荷速度の影響

Abstract

The effects of loading rates on the elastic-plastic buckling behavior of slender reinforcedconcrete columns are investigated experimentally and analytically. Twelve specimens, thosewere four short columns and eight long columns, were tested under the prescribed longitudinalstrain rate in quasi-static or dynamic loading. Increases of the buckling load with the increasingloading rate were precisely observed experimentally. The simple analytical method, in whichthe material strength is assumed to increase to the amount of about 20% higher than the quasi-static value, well predicts the strain rate effect on the behavior of columns.