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上海高层剪力墙结构设计计算书+CAD图纸(6)

时间:2019-06-07 17:08来源:毕业论文
踏步段梯板平均厚度 T = (hs + 2 * h1) / 2 = (292+2*221)/2 = 366mm 1.2.3 梯板有效高度 h1o = h1 - as = 120-25 = 95mm 1.3 均布永久荷载标准值 1.3.1 梯板上的线


      踏步段梯板平均厚度 T = (hs + 2 * h1') / 2 = (292+2*221)/2 = 366mm 
  1.2.3  梯板有效高度 h1o = h1 - as = 120-25 = 95mm 
 
  1.3  均布永久荷载标准值 
  1.3.1  梯板上的线形荷载换算成均布永久荷载 gk1 = Pk / B = 1/1.14 = 0.88kN/m 
  1.3.2  踏步段梯板自重 gk2' = γb * T = 25*0.366 = 9.16kN/m 
      gk2 = gk2' * Lsn / Ln = 9.16*2.08/3.28 = 5.81kN/m 
  1.3.3  高端平板自重 gk3' = γb * h1 = 25*0.12 = 3.00kN/m 
      gk3 = gk3' * Lhn / Ln = 3*1.2/3.28 = 1.10kN/m 
  1.3.4  踏步段梯板面层自重 
      gk4' = γc1 * c1 * (n - 1) * (hs + bs) / Lsn  
           = 20*0.025*(12-1)*(0.292+0.189)/2.08 = 1.27kN/m 
      gk4 = gk4' * Lsn / Ln = 1.27*2.08/3.28 = 0.81kN/m 
  1.3.5  高端平板面层自重 gk5' = γc1 * c1 = 20*0.025 = 0.50kN/m 
      gk5 = gk5' * Lhn / Ln = 0.5*1.2/3.28 = 0.18kN/m 
  1.3.6  梯板顶棚自重 gk6' = γc2 * c2 = 18*0.02 = 0.36kN/m 
      gk6 = gk6' * (Ln + Lx - Lsn) / Ln = 0.36*(3.28+3.824-2.08)/3.28 = 0.55kN/m 
  1.3.7  均布荷载标准值汇总 gk = gk1 + gk2 + gk3 + gk4 + gk5 + gk6 = 9.32kN/m 
 
  1.4  均布荷载设计值 
      由可变荷载控制的 p(L) = 1.2 * gk + 1.4 * qk = 13.99kN/m 
      由永久荷载控制的 p(D) = 1.35 * gk + 1.4 * ψc * qk = 14.55kN/m 
      最不利的荷载设计值 p = Max{p(L), p(D)} = 14.55kN/m 
 
  1.5  支座反力 
      永久荷载作用下均布反力标准值 Rk(D) = 15.29kN/m 
      可变荷载作用下均布反力标准值 Rk(L) = 3.28kN/m 
      最不利的均布反力基本组合值 R = 23.86kN/m 
 
  1.6  梯板斜截面受剪承载力计算 
      Vmax ≤ 0.7 * ft * b * ho 
      Vmax = 0.5 * p * Ln = 0.5*14.55*3.28 = 23.9kN 
      0.7 * ft * b * ho = 0.7*1.1*1000*0.095 = 73.2kN ≥ Vmax = 23.9kN,满足要求。 
 
  1.7  正截面受弯承载力计算 
  1.7.1  跨中 Mmax = p * Lo ^ 2 / 10 = 14.55*3.444^2/10 = 17.26kN•m 
      As = 682mm    ξ = 0.226    ρ = 0.72% 
      实配 (Ⅱ)Φ12@150    (As = 754mm)    最大裂缝宽度 ωmax = 0.189mm 
  1.7.2  支座 Mmin = - p * Lo ^ 2 / 20 = -14.55*3.444^2/20 = -8.63kN•m 
      As = 457mm    ξ = 0.106    ρ = 0.48% 
      实配 φ10@170    (As = 462mm)    最大裂缝宽度 ωmax = 0.142mm 
 
  1.8  跨中挠度验算 
  1.8.1  挠度验算参数 
      Mk = 13.43kN•m    Mq = 12.01kN•m 
      Mk --------  按荷载效应的标准组合计算的弯矩值  上海高层剪力墙结构设计计算书+CAD图纸(6):http://www.youerw.com/gongcheng/lunwen_34311.html
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