INELASTIC BEHAVIOUR OF HIGH-RISE REINFORCED CONCRETE BUILDING UNDER THOUSANDS OF REPEATED LOADS BY SEVERE WINDS (PART 2): INELASTIC BEHAVIOUR OF RC COLUMN

Abstract

For RC high-rise buildings higher than 200m, it is necessary to develop structural design method by wind force repeated thousands of times. Main conclusions of RC columns are as follows.

1. Some of tests are failed by repeated loads smaller than the ultimate bending strength Q. For a concrete strength of 60N/mm², one of specimens is failed by a repeated load of 0.85Q with axial force ratio of 0.3, and for 36N/mm² by a repeated load of 0.80Q with 0.3 or 0.5.

2. Column failure is caused by the magnitude of compressive strain in the cover concrete on compression side.