軸圧をうける鉄筋コンクリート部材の弾塑性曲げ変形性状に関する研究 (I) : 一方向曲げ : 曲げモーメント-曲率関係

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書誌事項

タイトル別名
  • STUDY ON THE ELASTO-PLASTIC FLEXURAL BEHAVIOUR OF REINFORCED CONCRETE MEMBERS SUBJECTED TO AXIAL LOAD. : PART I MOMENT-CURVATURE RELATION
  • 軸圧をうける鉄筋コンクリート部材の弾塑性曲げ変形性状に関する研究-1-一方向曲げ,曲げモーメント-曲率関係
  • ジクアツ オ ウケル テッキン コンクリート ブザイ ノ ダン ソセイ マゲ ヘンケイ セイジョウ ニ カンスル ケンキュウ 1 1ホウコウ マゲ , マゲ モーメント-キョクリツ カンケイ

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説明

To make clear the flexural behaviours of reinforced concrete members subjected to combined bending and axial load, it is discussed here mainly on its moment-curvature relations. At first, bending moment and axial load acting on a cross section are expressed in terms of curvature. It is shown that, in general, these three quantities form a spatial continuous curved surface in Cartesian co-ordinates, M/F_cbD^2, N/F_cbD and DΦ, with a parameter of reinforcing index β_sp(=σ_y/F_c・p). This curved surface is traced at main stress-boundary points. Two projections of this surface, one on the M/Fd_bD^2, N/F_dbD coordinate plane and the other on the N/F_cbD DΦ coordinate plane, are shown in Figs. 6〜10 : (a), (b) respectively. Finally the projections on the M/F_cbD^2 DΦ coordinate plane under constant axial loads, 2/3N_o, 1/3N_o, 1/6N_o and 0N_o are pletted in Figs. 6〜10 : (c) at several reinforcing indices β_sp=0.10, 0.20, 0.30, 0.40, 0.50. From these figures, the relations between moment and curvature under constant axial load and the significances of the main stress boundary points in it become very clear.

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