3) 耐震壁の開口の影響による負担せん断力の低減率 : 有開口耐震壁のせん断抵抗に関する研究・第3報

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タイトル別名
  • 3) SHEARING FORCE RATIO CONCERNING QUAKE RESISTING WALLS HAVING VARIOUS OPENINGS : Study on Shearing Resistance of Quake Resisting Walls having Various Openings, No. 3
  • 有開口耐震壁のせん断抵抗に関する研究-3-
  • ユウカイコウ タイシンヘキ ノ センダン テイコウ ニ カンスル ケンキュウ 3

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抄録

From the shearing tests of reinforced concrete models, the author drew the following conclusions concerning shearing force ratio η and opening factor ξ. Where [numerical formula] η|R=R_n: shearing force ratio when shearing deformation R equals R_n Q|R=R_n: shearing force of the wall having openings when R=R_n o_Q|R=R_n: shearing force of the wall having no openings when R=R_n F_Q|R=R_n: shearing force of the frame without wall when R=R_n [numerical formula]: h': inside height of the boundary frame l': inside length of the boundary frame h_o: height of the opening l_o: length of the opening 1) We can neglect the effect of the opening situation and assume the same value of η, when the walls have same ξ. 2) We could not observe remarkable difference in η-ξ relationcurves from initial to ultimate. 3) The author proposed an experimental curve and formulae concerning η-ξ relation as follows: a) when ξ≤1/3 It is given by an experimental curve. b) when ξ≥1/3 η=1.5(1-ξ)^2 c) formula applied for any ξ (0≤ξ≤1) [numerical formula]

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