付着のある RC 部材と付着のない RC 部材の変形特性・II

概要

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This is subsequent paper to the previous one published in this transactions No.249, and deals with the experiments on RC specimens with bond reinforced by deformed bars and RC specimens without bond made by covering the deformed bars with paraffin wax under bending moment and shearing force. The following points were clarified by the experimental results and some discussions. (1) In RC members without bond subjected to bending moment and shearing force, only cracks perpendicular to the member's axis occured at the points of maximum bending moment or at the supported points grow wide and diagonal cracks do not grow wide, in case that the shear span's ratio a/d is not too small. (2) In RC members subjected to bending moment and shearing force, due to bond being lost, compressive force transmitted by reinforcing bar becomes small and compressive force loaded to concrete becomes large. (3) RC members subjected to bending moment and shearing force in which only cracks perpendicular to the member's axis grow wide do not fail suddenly. (4) Hysteretic characteristics of RC members subjected to bending moment and shearing force come near slip type due to bond being lost.
社団法人日本建築学会の論文
1977-12-30