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DDDDDDDDDDDDDDDDDDDD1DDDDDDDDDD2DDDDDDDDDDDDDDD3DDDDDDDDDDDDDD4DDDDDDDDDDDDDDDDGB50017U2003DGB50205U2001DJGJ74D2003TZ210-2005DTBJ211-86D・DDDDDDDDD1DDDDDDDDDDDDDED2.06D105N/mm2DDDDDpD7850kg/m3D2DDDDDDDDDDDDDDD(MPa)DDDDDD(MPa)N/mm2DDDDDDQ23523594141211DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD6=6mmDDDDDDDDDDD[10#DDDDDDM16DDDDD][16DDDDDDDDDDDDDDDDDDDDDDDQ235DDDDDDDD屮25DDDDDDDDDDDh=2000mmDDDDDDDLy=100mmDDDDDDDDDDDDLy=300mmD410015009700DDDDD1DDDDDDDDDDDDDDDD30DDDDDD加/hDDDDDDDD8DDDDDDDDD30DDDDDD加/hDDDDDDDD8DDDDDDDDDDDDDD(GBJ9-87)DDDDDDDDDDDDDDDDDGBJ5024-92DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD1.2DDDDDDDD1.4DDDDDDD:0.854DDDDDDDDDDDDDDDD41.44D1.2D0.85=42.27KN/DDDDDDD[8DDDDDDDDDDDDDDDDDDDD1DF=45KN/DDDDDDh5DDDDDDDDDDDDDDDDDDD2D1.4D0.85=2.38KN/D6DDDDDDDDF=42.27+2.38=44.65(KN/D)0DDDDDDDDDDDDDDDDDDDF/r=45/25=1.8mDDDDDD0cDDDDDDD1DDDDD300mmD500mmDDDDDDDDDDDDDDDDDDDq=45D0.5=22.5KN/m2DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD7DDDDDDDDDDDDDDDDDDD1DDDDDDDDDDD3DDDDDDDDDDDW1=b*h2/6=0.5*0.006*0.006/6=3(cm3)4DDDDDDDDDDDDI1=b*h3/12=0.5*0.006*0.006*0.006/12=0.9(cm4)5DDDDDDDDDDDDDDDDDMmax=qL2/8=22.5*0.3*0.3/8=253(NDm)6DDDDDDDDDDDDOmax二Mmax/W=253/3=84.33(MPaD<[O]=160Ymax=5*q*L4/(384E*I)DDDDDDDDDDDDDDDDDTDDDDDDDD[10DDDDDDDDDDDD[10DDDDDDDDDD,DDDDDDDDD=5*25300*0.34/(384*206*109*0.9*10-8)=0.00144DmDD66DDDDDDDDDDDDDDDD[10DD1DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDA=10.2cmDI=101cm4X2DDD[10DDDD5DD[10DDDDDDDDD2DDDD[8DDDDDDD3DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD:q二F0*hl*=45*0.3=13.5(KN/m)DDhlD[10DDDDDDD(D[10DD)DDDD0.3m4DDDDDDDDDDDDDDD[10DDDDDDDDDDDD一丨二芥-必/易rr//[8I二"、-.1=-D3DDDD[10DDDDDDDDDDL=0.625m,L1=0.325m,L2=0.325mDL1=0.5〉(0.707-0.5)*2=0.414=(0.707-0.5)*LMmax=q1*L12/2=13500*0.5*0.5/2=1687.5(NDm)D[10DDDDDDDDW=25.3(cm3)6DD[10DDDDDDDDDD:Omax二Mmax/W=1687.5/0.0000253=66.7(MPaD〈[o]7DD[10DDDDDDDDD:y1=7*q1*L24/(24E*I)Dy1=7*13500*0.54/(24*200,000,000,000*0.00000101)=0.000105(m)DDDDD[10DDDDDDDDDDDDDDDDD1DDDDDDD16#DDDDDDDDDDDDDDDDDDDDDDDDDDDDDl=625mmDDDDDDDDDDDDDDDDDDDDDDDDxDDDDDDDDDDD,DDDDDDDDDDDDDDDDPKPMDDDDDDDPKPMDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDPKPMDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD2DDDDDDDDDDDDDDDDD][_3DDDDDDD2.0□□□□7TTTT17TTTT14DDDDDDDDDDDDD5DDDDDD025DDDDDDDDDD钢梁相对挠度图（恒+活）（mm）弯矩包络图（収N•m）DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDP=F0*ADDF0=45DKNDDDDDDDDDDDDDDDDDDA=1*2.6=2.6Um2口DDDDDDDF=45*2.6=117UKNDDDDDDDDHRB500DDDDDDDDDo4=F/A=117/(3.14*0.0125*0.0125)=117/491*10-66nnnnnn9=237(MPa)〈[o]=500MPaDDDDDDDDDDDDDDDDDDD□□□□□□as(□ap0.2)ab65mmMpaMPa%□□□HRB3356Q253354901628D50HRB4006Q254004701428D50HRB5006Q255006301228D50