------------------------------------------------------------------------------------------
 midas Gen - RC板使用性验算 [ Eurocode2:04 & NTC2018 ]                      Gen 2023
==========================================================================================


===============================================================================
    [[[*]]]   板裂缝最大值数据 : DOMAIN shortside-NORTH, Dir 1.
===============================================================================

 << 底 >>

 -. 参数信息.
    单元号.   : 1150
    LCB No.   :   16
    材料      :  fck =     30.0000 MPa.
                 fyk =    400.0000 MPa.
    厚度      :  300.0000 mm.
    保护层    :  dB  =  50.0000 mm.
                 dT  =  50.0000 mm.
 -. 验算信息.
    gamma_c  =   1.500  (for Concrete)
    gamma_s  =   1.150  (for Reinforcement)
    fcd      = fck / gamma_c =    20.00000 MPa.
    fyd      = fyk / gamma_s =   347.82609 MPa.
    b        =   1.0000 mm.  (根据规范的单位长度).
    d        = 250.0000 mm.
    As_use   =    2454.3500 mm^2/m.  (       2.4544 mm^2/mm.)

-. 裂缝验算结果信息.

   [ Check Crack Width ]
   fcm      = fck+8(MPa)    =    38.00000 MPa.
   fctm     = 0.30*fck^(2/3)=     2.89647 MPa.(fck<=C50/60)
   fct.eff  = fctm (by 28 days).
   Sigma_s  =      425.409 MPa.
   kt       = 0.6 (for short term loading.).
   X        =    95.97015 mm.
   hc,ef    = MIN[ 2.5*(h-d), (h-X)/3, h/2 ] =    68.00995 mm.
   Ac.eff   = Bc*hc,ef             =    68.00995 mm^2.
   Rho_p.eff= As/Ac.eff            =   0.0361
   Ecm      = 22[fcm/10]^0.3 *1000 =   32836.568 MPa. (by Table 3.1)
   Alpha_e  = Es/Ecm               =     6.09077
   (Eps_sm-Eps_cm) = (Sigma_s-kt*fct.eff/Rho_p.eff*(1+Alpha_e*Rho_p.eff))/Es
                   =   0.001833
                     >= 0.6*Sigma_s/Es =  0.001276

   Bond coefficient(k1)                =   0.8000
   Strain distribution coefficient(k2) =   0.5000
   NAD Value (k3)                      =   3.4000
   NAD Value (k4)                      =   0.4250
   c        =    37.50000 mm.
   Phi      =    25.00000 mm.
   S_r.max  = k3*c + k1*k2*k4*Phi/Rho_p.eff =   245.26734 mm.

------------------------------------------------------------------------------------------
 midas Gen - RC板使用性验算 [ Eurocode2:04 & NTC2018 ]                      Gen 2023
==========================================================================================


   wk       = S_r.max * ( Eps_sm-Eps_cm)    =     0.44966 mm.
   wk >  0.300 mm.   --->  Not Acceptable !!!

   [ Check Max Rebar Dia ]
   phi*_s   =     5.49182 mm.
   phi_s    = phi*_s * (fct.eff/2.9)*(kc*hcr)/{2*(h-d)} =     3.10719 mm.
   Dia_use  =    25.00000 mm.
   Dia_max  = phi_s =     3.10719 mm.
   Dia_use > Dia_max   ---> Not Acceptable !!!

   [ Check Max Rebar Space ]
   s_use  =   200.00000 mm.
   s_max not checked. (Allowable crack width or Steel stress is out of range.)

   [ Check Minimum As ]
   Sig_s    =     160.0000 MPa.( by Using Dia and Allowable Crack Width. )
   kc       = 0.4 (for pure bending)
   k        = 1.0
   Act      = b*Thickness/2 =     150.0000 mm^2.
   Asmin    = kc*k*fct.eff*Act/Sig_s/b =       1.0862 mm^2/mm.
   Asmin < As_use   ---> O.K !

 << 顶 >>

 -. 参数信息.
    单元号.   : 550
    LCB No.   :   16
    材料      :  fck =     30.0000 MPa.
                 fyk =    400.0000 MPa.
    厚度      :  300.0000 mm.
    保护层    :  dB  =  50.0000 mm.
                 dT  =  50.0000 mm.
 -. 验算信息.
    gamma_c  =   1.500  (for Concrete)
    gamma_s  =   1.150  (for Reinforcement)
    fcd      = fck / gamma_c =    20.00000 MPa.
    fyd      = fyk / gamma_s =   347.82609 MPa.
    b        =   1.0000 mm.  (根据规范的单位长度).
    d        = 250.0000 mm.
    As_use   =    3141.6000 mm^2/m.  (       3.1416 mm^2/mm.)

-. 裂缝验算结果信息.

   [ Check Crack Width ]
   fcm      = fck+8(MPa)    =    38.00000 MPa.

------------------------------------------------------------------------------------------
 midas Gen - RC板使用性验算 [ Eurocode2:04 & NTC2018 ]                      Gen 2023
==========================================================================================

   fctm     = 0.30*fck^(2/3)=     2.89647 MPa.(fck<=C50/60)
   fct.eff  = fctm (by 28 days).
   Sigma_s  =      398.231 MPa.
   kt       = 0.6 (for short term loading.).
   X        =   105.25513 mm.
   hc,ef    = MIN[ 2.5*(h-d), (h-X)/3, h/2 ] =    64.91496 mm.
   Ac.eff   = Bc*hc,ef             =    64.91496 mm^2.
   Rho_p.eff= As/Ac.eff            =   0.0484
   Ecm      = 22[fcm/10]^0.3 *1000 =   32836.568 MPa. (by Table 3.1)
   Alpha_e  = Es/Ecm               =     6.09077
   (Eps_sm-Eps_cm) = (Sigma_s-kt*fct.eff/Rho_p.eff*(1+Alpha_e*Rho_p.eff))/Es
                   =   0.001759
                     >= 0.6*Sigma_s/Es =  0.001195

   Bond coefficient(k1)                =   0.8000
   Strain distribution coefficient(k2) =   0.5000
   NAD Value (k3)                      =   3.4000
   NAD Value (k4)                      =   0.4250
   c        =    40.00000 mm.
   Phi      =    20.00000 mm.
   S_r.max  = k3*c + k1*k2*k4*Phi/Rho_p.eff =   206.25428 mm.

   wk       = S_r.max * ( Eps_sm-Eps_cm)    =     0.36274 mm.
   wk >  0.300 mm.   --->  Not Acceptable !!!

   [ Check Max Rebar Dia ]
   phi*_s   =     6.08845 mm.
   phi_s    = phi*_s * (fct.eff/2.9)*(kc*hcr)/{2*(h-d)} =     3.39366 mm.
   Dia_use  =    20.00000 mm.
   Dia_max  = phi_s =     3.39366 mm.
   Dia_use > Dia_max   ---> Not Acceptable !!!

   [ Check Max Rebar Space ]
   s_use  =   100.00000 mm.
   s_max not checked. (Allowable crack width or Steel stress is out of range.)

   [ Check Minimum As ]
   Sig_s    =     160.0000 MPa.( by Using Dia and Allowable Crack Width. )
   kc       = 0.4 (for pure bending)
   k        = 1.0
   Act      = b*Thickness/2 =     150.0000 mm^2.
   Asmin    = kc*k*fct.eff*Act/Sig_s/b =       1.0862 mm^2/mm.
   Asmin < As_use   ---> O.K !