Author(s)

O. Joh & Y. Goto

Abstract

Beam bars of reinforced concrete structures are usually anchored with 90-degree hooks in exterior beam-column joints. However, there have been far fewer studies on the anchorage behavior of 90-degree hooked-bar than on straight-bar anchorage. In our previous paper, we divided the anchorage failure of 90-degree hooked bars in exterior beam-column joints in a middle storey in a building into three modes: side split failure; local compression failure; and raking-out failure, in which a concrete block, approximating the inside dimensions of the hooked bar in size, is raked out toward the beam side of the column due to the presence of many beam bars and/or to short development length within the joint T

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