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                        lrg2014/7/18 18:34:17    cʣ2378   

                           L: B߅L:0.400m

                           t: : 2.5mm

                           E: ģ: 70000.000N/mm2

                           v: ɱ: 0.330

                           D: :

                           D=Et3/12/(1-v2)/100000

                            =1.023

                           ϶:

                           U=104f1WkL4/D

                            =2.281mm

                           ϶c߅Lֵ:

                           Du=U/L/1000

                             =0.006

                           0.0061/100   B϶ȿԝMҪ    

                         

                        C及У:    

                           У=M/W=6mqL2/t2fa=80.000N/mm2

                           Lx: C: 1.200m

                           Ly: C߶: 0.400m

                           L: C߅L: 0.400m

                           t: ٰ: 2.5mm

                           WkLd˜ֵ: 1.987kN/m2

                           ֱƽķֲˮƽ:

                           qEAkֱĻƽķֲˮƽ (kN/m2)

                           qEAk=5maxGAK

                               =50.16067.500/1000

                               =0.054kN/m2

                           dOӋֵ飺

                           q=1.4Wk+1.30.5qEAk

                            =2.817kN/m2

                           m1Џϵ߅cL߅߅L(0.400/1.200=0.333)

                               : 0.072

                           m0̶ˏϵ߅cL߅߅L(0.400/1.200=0.333)

                               : 0.084

                           =(Wk+0.5qEAk)L4109/Et4

                             =18.86

                           ۜpϵ=18.86

                               :0.91

                           Cܵ󏝾ֵؑ:

                            =28.428N/mm2

                           28.428N/mm280.000N/mm2  ȿԝMҪ    

                         

                           C϶У:

                           У/L1/100

                           f1϶ϵ,  ߅cL߅߅L(0.400/1.200=0.333)

                               : 0.003

                           WkLd˜ֵ: 1.987kN/m2

                           Lx: C: 1.200m

                           Ly: C߶: 0.400m

                           L: C߅L: 0.400m

                           t: : 2.5mm

                           E: ģ: 70000.000N/mm2

                           v: ɱ: 0.330

                           D: :

                           D=Et3/12/(1-v2)/100000

                            =1.023

                           ϶:

                           U=104f1WkL4/D

                            =1.181mm

                           ϶c߅Lֵ:

                           Du=U/L/1000

                             =0.003

                           0.0031/100   C϶ȿԝMҪ    

                         

                        ֧̎У:    

                        1.֧̎Уһ߃ɂɰ֧r߃ɂȵĹ̶ˏϵƽ̎ϵ

                              m֧=(m֧(i)+m֧(j))/2

                           У=M/W=6m֧qL2/t2fa=80.000N/mm2

                        2.֧Уˣ

                           B,C ֮g

                              ߂B̶ˏϵ=0.121

                              ߂C֧ϵ=0.084

                              ֧ϵ:m=(mbx+mcx)/2

                                        =0.103KNm

                           =6m֧qL2103/t2

                             =40.456N/mm2

                           40.456N/mm280.000N/mm2  ȿԝMҪ

                        ӏУ:    

                         1. У:

                           У=M/W=6mqL2/t2fa=85.500N/mm2

                           Lx: B: 1.200m

                           Ly: BL: 0.400m

                           t: ӏߺ: 3.0mm

                           Gwӏߌ: 35.000mm

                           Ghӏ߸߶: 35.000mm

                           ӏߏ:

                           M=qLyLx2/8

                            =2.8170.4001.2002/8

                            =0.203kNm

                           ӏ߿:

                           W=(GwGh3-(Gw-2t)(Gh-2t)3)/6/Gh/103

                            =3.778cm3

                           ӏ߿؞:3.778cm3

                           d{ϵ: 1.05

                           ӏߏ:

                           =M103/1.05/W

                             =51.130N/mm2

                           51.130N/mm285.500N/mm2

                           ӏߏȿԝMҪ    

                         2. ӏ߄У:

                           У:=5qL4/384EI   /L1/100

                           E: ģ: 70000.000N/mm2

                           ӏߑTԾ:

                           I=(GwGh3-(Gw-2t)(Gh-2t)3)/12/104

                            =6.611cm4

                           ӏߑTԾ؞:6.611cm4

                           ӏߓ϶:

                           U=5108qKLyLx4/384/E/I

                            =51082.0140.4001.2004/384/70000/6.611

                            =4.700mm

                           ߓ϶c߅Lֵ:

                           Du=U/Lx/1000

                             =0.00392

                           0.0041/100   ӏߓ϶ȿԝMҪ    

                         

                        ̶Ƭ壩Ӌ    

                            Wfg_xӋԪ1200.0mm

                            Hfg_yӋԪߞ1200.0mm

                            Hyb1ϲָߞ350.0mm

                            Hyb2²ָߞ350.0mm

                            WybL20.0mm

                            Hyb35.0mm

                            Byb5.0mm

                            Dybֱ5.0mm

                            WkĻϵLd˜ֵ1.987(kN/m2)

                            qEAkֱĻƽķֲˮƽÞ0.054(kN/m2)(cMĵ)

                            A: ÿe(m2)

                            A=(Wfg_x/1000/2)(Hyb1+Hyb2)/1000/2

                             =(1.2000/2)(0.3500+0.3500)/2

                             =0.2100 (m2)

                            PwkÿLd˜ֵ(KN)

                            Pwk=WkA=1.9870.2100=0.417(KN)

                            PwÿLdOӋֵ(KN)

                            Pw=1.4Pwk=1.40.417=0.584(KN)

                            MwÿLda󏝾(KN.m)

                            Mw=1.5Pw(Wyb/2)=1.50.584(0.0200/2)=0.009 (KN.m)

                            Pekÿֵؘܵ(KN)

                            Pek=qEAKA=0.0540.2100=0.011(KN)

                            PeÿܵOӋֵ(KN)

                            Pe=1.3Pek=1.30.011=0.015(KN)

                            Meÿܵîa󏝾(KN.m)

                            Me=1.5Pe(Wyb/2)=1.50.015(0.0200/2)=0.000 (KN.m)

                            Sw+0.5SeM

                            M: ÿܵ󏝾(KN.m)

                            M=Mw+0.5Me=0.009+0.50.000=0.009(KN.m)

                            W: ֿ(mm3)

                            W=((Hyh-Dyb)Byb2)/6

                             =((35.0-5.0)5.02)/6

                             =125.0 (mm3)

                            I: (mm4)

                            I=((Hyh-Dyb)Byb3)/12

                             =((35.0-5.0)5.03)/12

                             =312.5 (mm4)

                           =106M/W=1060.009/125.0=71.0 (N/mm2)

                           =71.0(N/mm2)  84.2(N/mm2)ȝMҪ    

                           U: ׃(mm)

                           U=1.510002(Pwk+0.5Pek)Wyb3/(48EI)

                            =1.51000(0.417+0.50.011)20.03/(240.7105312.5)

                            =0.005mm

                           Du׃(mm)

                           Du=U/L=U/(Wyb/2)=0.005/10.0=0.0005

                           Du=0.00051/180 Ҫ    

                           Nvbh˨()(N):

                           D: ˨Чֱ4.250(mm)

                           Nvbh=(СD2170)/4=(3.14164.2502170)/4

                               =2411.7 (N)

                           Nvbh=2411.72(Pw+0.5Pe)=1183.1(N)MҪ    

                         

                        ĻӋ    

                        Ļ֧WģMOӋӋ㣺

                         

                        1. :

                        (1)LddOӋֵ(ηֲ)Ӌ

                            qwLddOӋֵ(kN/m)

                            W: LdOӋֵ: 2.536kN/m2

                            B: Ļָ: 1.200m

                            qw=WB

                             =2.5361.200

                             =3.044 kN/m

                        (2)

                           qEAOӋֵ(KN/m2):

                           GAkĻ(Ϳ)ƽ: 450N/m2

                          ֱĻƽľˮƽֵؘ:

                           qEAkֱĻƽľˮƽֵؘ (kN/m2)

                           qEAk=5maxGAk

                               =50.160450.000/1000

                               =0.360 kN/m2

                           EĻ÷ϵ: 1.3

                           qEA=1.3qEAk

                          cʣ2378 [һ]

                         

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