–ÚŽŸƒ‚ƒNƒW‚ց@@y—ÀŒ`Šî‘b_Bcƒ^ƒCƒvz Ý”õ‘ϐk_—ÀƒnƒŠŒ`ƒJƒ^Šî‘bƒLƒ\_Bc
œŠî‘bƒLƒ\‚Ì•‚ƒE‚«ãƒA‚ª‚è‚ÌŒŸ“¢ƒPƒ“ƒgƒE
(1-Kv)[(Lg+(Lf-L)/2*W+Lf*Wf/2]>Kh[(hf+hg)*W+hf*Wf/2]
(1-0.3)[(30+(120-60)/2)*1.9+120*28E-01/2]=20E+01>0.6[(50+80)*1.9+50*28e-01/2]=19E+01
œ”»’è OK 2
‚±‚±‚ŁA L=Ý”õ‹@Ší‚Ì•=60[cm]
—ÀŒ`Šî‘b_Bc_1.jpg
60
Lg=Ý”õ‹@Ší‚̏dSˆÊ’u=30[cm] 30
hg=Ý”õ‹@ŠídS‚‚³=80[cm] 80
Lf=Šî‘b’·‚³=120[cm] 120
hf=Šî‘b‚‚³=50[cm] 50
Bf=Šî‘b•=30cm] 30
Kh=ÝŒv—p…•½k“x=0.6 0.6
Kv=ÝŒv—p‰”’¼k“x=0.3
W=Ý”õ‹@Šíd—Ê=1.9[kN] 1.9
Wf0=Šî‘bƒLƒ\d—ʃWƒ…ƒEƒŠƒ‡ƒE=Wf+Wr
   =Wf+Wr=1.8+1=2.8[kN]
Wf=Šî‘bƒLƒ\d—ʃWƒ…ƒEƒŠƒ‡ƒE
    =hf*Lf*Bf*ƒÁ=50*120*30*10E-06=1.8[kN]
Wr=ƒ‰ƒtƒRƒ“ƒNƒŠ[ƒgd—ʃWƒ…ƒEƒŠƒ‡ƒE
  =hr*(Bfr*Lr-Bf*Lf)*ƒÁ=30*(50*140-30*120)*10e-06=1[kN]
hr=ƒ‰ƒtƒRƒ“ƒNƒŠ[ƒg‚‚³=30[cm] 30
Lr=ƒ‰ƒtƒRƒ“ƒNƒŠ[ƒg’·‚³=140[cm] 120
Br=ƒ‰ƒtƒRƒ“ƒNƒŠ[ƒg•=50[cm] 50
La=ƒ_ƒ{‹Ø–„ž‚Ý’·‚³=10[cm] 10
ƒÁ=ƒRƒ“ƒNƒŠ[ƒg”äd—Ê=10E-06[kN/cm3] 23