繊維補強外殻PCaを用いたRC柱の構造特性に関する研究(構造)

概要

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When concrete of 100 N/mm^2 class is used so that outside columns of a high-rise building may receive a high axis load, concrete at the edge of an R/C column member is violently crushed by compressive force at a story drift angle of 1/200-1/100 rad. To prevent this, as there were problems in structural performance as strength rapidly decreased, 1-2 vol. % steel fiber was mixed in to reinforce the precast concrete shell R/C column. As a result: (1) Crushing of concrete at the edge of the member and exfoliation of cover concrete were decreased. (2) Deformation capacity increased in a straight line as the steel fiber content increased and that increase was 20% when the steel fiber content was 2%. (3) It is conjectured that the flexural ultimate strength increased about 25%.
社団法人日本建築学会の論文
2008-06-20