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1、 鋼絞線理論伸長(zhǎng)量計(jì)算書一、 計(jì)算依據(jù):1、 采用計(jì)算公式:L=(Pp*L)/(Ap*Ep) (1)L-預(yù)應(yīng)力筋理論伸長(zhǎng)值(mm);Pp -預(yù)應(yīng)力筋的平均張拉力(N);L-預(yù)應(yīng)力筋的長(zhǎng)度(mm);Ap-預(yù)應(yīng)力筋的截面面積(mm2);Ep-預(yù)應(yīng)力筋的彈性模量(N/mm2);Pp =(P(1-e-(kx-)/( kx+) (2)Pp -預(yù)應(yīng)力筋的平均張拉力(N);P-預(yù)應(yīng)力筋張拉端的張拉力(N);x-從張拉端至計(jì)算截面的孔道長(zhǎng)度(m);-從張拉端至計(jì)算截面曲線孔道部分切線的夾角之和(rad);k-孔道每米局部偏差對(duì)摩擦的影響系數(shù);-預(yù)應(yīng)力筋與孔道壁的摩擦系數(shù);PZ=Pq×e-(kx+)

2、(3)PZ -張拉段終點(diǎn)張拉力(N);Pq -張拉段起點(diǎn)張拉力(N) 每一段的起點(diǎn)張拉力為前一段終點(diǎn)張拉力2、計(jì)算參數(shù): 鋼絞線直徑:s=15.2mm,鋼絞線面積:140mm2,標(biāo)準(zhǔn)強(qiáng)度fpk=1860Mpa,彈性模量Ep=1.95×105Mpa,k=0.0015, =0.17,e=2.718281828二、 計(jì)算過程:1、 鋼絞線計(jì)算段落劃分:每束鋼絞線劃分為6段,其中BC段和EF段為曲線段,其余段為直線段。2、 張拉端張拉力計(jì)算:梁端控制應(yīng)力為0.75fpk,梁端單束張拉力為0.75*1860*140=195300(N),3、 每段孔道長(zhǎng)度計(jì)算及夾角計(jì)算;4、 平均張拉力計(jì)算;5

3、、 伸長(zhǎng)量計(jì)算。三、 中跨鋼絞線伸長(zhǎng)量計(jì)算(一)N1束鋼絞線伸長(zhǎng)量1、 N1鋼絞線梁端張拉力計(jì)算:N1鋼絞線為4束,梁端張拉力為195300*4=781200(N)2、 N1鋼絞線夾角計(jì)算:(1) N1鋼絞線AB段夾角=0(2) N1鋼絞線BC段夾角=3.14159*5/180=0.087266(3) N1鋼絞線CD段夾角=0(4) N1鋼絞線DE段夾角=0(5) N1鋼絞線EF段夾角=3.14159*5/180=0.087266(6) N1鋼絞線FG段夾角=03、 N1鋼絞線每段長(zhǎng)度計(jì)算(1) N1鋼絞線AB段長(zhǎng)度:k=(1.6-0.25-0.09-0.22)2+(15-0.885-3.92

4、7-0.3)2)0.5+0.4=10.343(2) N1鋼絞線BC段長(zhǎng)度:k=R=3.927m(3) N1鋼絞線CD段長(zhǎng)度:k=0.855m(4) N1鋼絞線DE段長(zhǎng)度:k=0.855m(5) N1鋼絞線EF段長(zhǎng)度:k= R=3.927m(6) N1鋼絞線FG段長(zhǎng)度:k=(1.6-0.25-0.09-0.22)2+(15-0.885-3.927-0.3)2)0.5+0.4=10.3434、 鋼絞線伸長(zhǎng)量計(jì)算:(1) AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=781200(N),Kx+=0.0015*10.343+0.25*0=0.01551,1-e-(kx+)=1-e-0.01551=0.01539

5、Pp =(P(1-e-(kx+)/( kx+)=781200*0.01539/0.01551=775156(N),L=(Pp*L)/(Ap*Ep)=(775156*10343)/(140*4*1.95*105)=73.4mmPZ=Pq×e-(kx+) =781200*e-0.01551=769177(N)(2) BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=769177(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)=769177*0

6、.02052/0.02073=761385(N),L=(Pp*L)/(Ap*Ep)=(761385*3927)/(140*4*1.95*105)=27.4mmPZ=Pq×e-(kx+) =769177*e-0.02073=753396(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=753396(N)Kx+=0.0015*0.885+0.25*0=0.001331-e-(kx+)= 1-e-0.00133=0.00133,Pp =(P(1-e-(kx+)/( kx+)=753396*0.00133/0.00133=753396(N),L=(Pp*L)/(Ap*Ep

7、)=(753396*885)/(140*4*1.95*105)=6.1mm(4) DE段伸長(zhǎng)量:DE=CD=6.1mm,(5) EF段伸長(zhǎng)量:EF=BC=27.4mm,(6) FG段伸長(zhǎng)量:FG=AB=73.4mm,N1束鋼絞線總伸長(zhǎng)量L=(73.4+27.4+6.1)*2=213.8mm;(二) N2束鋼絞線伸長(zhǎng)量1、N2鋼絞線梁端張拉力計(jì)算:N2鋼絞線為4束,梁端張拉力為195300*4=781200(N)2、N2鋼絞線夾角計(jì)算:(1) N2鋼絞線AB段夾角=0(2) N2鋼絞線BC段夾角=3.14159*5/180=0.087266(3) N2鋼絞線CD段夾角=0(4) N2鋼絞線DE段

8、夾角=0(5) N2鋼絞線EF段夾角=3.14159*5/180=0.087266(6) N2鋼絞線FG段夾角=03、N2鋼絞線每段長(zhǎng)度計(jì)算(1)N2鋼絞線AB段長(zhǎng)度:k=(1.6-0.5-0.09-0.11)2+(15-2.507-3.927-0.3)2)0.5+0.4=8.715mm(2) N2鋼絞線BC段長(zhǎng)度:k=R=3.927m(3) N2鋼絞線CD段長(zhǎng)度:k=2.507m(4) N2鋼絞線DE段長(zhǎng)度:k=2.507m(5) N2鋼絞線EF段長(zhǎng)度:k= R=3.927m(6)N2鋼絞線FG段長(zhǎng)度:k=(1.6-0.5-0.09-0.11)2+(15-2.507-3.927-0.3)2)

9、0.5+0.4=8.715mm5、 鋼絞線伸長(zhǎng)量計(jì)算:(1)AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=781200(N),Kx+=0.0015*8.715-0.17*0=0.01307,1-e-(kx+)=1-e-0.01307=0.01298Pp =(P(1-e-(kx+)/( kx+)=781200*0.01298/0.01307=775821(N),L=(Pp*L)/(Ap*Ep)=(775821*8715)/(140*4*1.95*105)=61.9mmPZ=Pq×e-(kx+) =781200*e-0.01307=771056(N)(2) BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一

10、段終點(diǎn)張拉力P=771056(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)=771056*0.02052/0.02073=763245(N),L=(Pp*L)/(Ap*Ep)=(763245*3927)/(140*4*1.95*105)=27.4mmPZ=Pq×e-(kx+) =771056*e-0.02073=755237(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=755237(N)Kx+=0.0015*2.507

11、+0.17*0=0.003761-e-(kx+)= 1-e-0.00376=0.00375,Pp =(P(1-e-(kx+)/( kx+)= 755237*0.00375/0.00376=753228(N),L=(Pp*L)/(Ap*Ep)=(753228*2507)/(140*4*1.95*105)=17.3mm(4) DE段伸長(zhǎng)量:DE=CD=17.3mm,(5) EF段伸長(zhǎng)量:EF=BC=27.4mm,(6) FG段伸長(zhǎng)量:FG=AB=61.9mm,N2束鋼絞線總伸長(zhǎng)量L=(61.9+27.4+17.3)*2=213.2mm;(三) N3束鋼絞線伸長(zhǎng)量1、N3鋼絞線梁端張拉力計(jì)算:N3鋼

12、絞線為5束,梁端張拉力為195300*4=976500(N)2、N3鋼絞線夾角計(jì)算:(1) N3鋼絞線AB段夾角=0(2) N3鋼絞線BC段夾角=3.14159*5/180=0.087266(3) N3鋼絞線CD段夾角=0(4) N3鋼絞線DE段夾角=0(5) N3鋼絞線EF段夾角=3.14159*5/180=0.087266(6)N3鋼絞線FG段夾角=03、N3鋼絞線每段長(zhǎng)度計(jì)算(1)N3鋼絞線AB段長(zhǎng)度:k=(1.6-0.75-0.09)2+(15-4.129-3.927-0.3)2)0.5+0.4=7.087mm(2) N3鋼絞線BC段長(zhǎng)度:k=R=3.927m(3) N3鋼絞線CD段長(zhǎng)

13、度:k=4.129m(4) N3鋼絞線DE段長(zhǎng)度:k=4.129m(5)N3鋼絞線EF段長(zhǎng)度:k= R=3.927m(6)N3鋼絞線FG段長(zhǎng)度:k=(1.6-0.75-0.09)2+(15-4.129-3.927-0.3)2)0.5+0.4=7.087mm6、 鋼絞線伸長(zhǎng)量計(jì)算:(1)AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=976500(N),Kx+=0.0015*7.087-0.17*0=0.01063,1-e-(kx+)=1-e-0.01063=0.01057Pp =(P(1-e-(kx+)/( kx+)=976500*0.01057/0.01063=970988(N),L=(Pp*L)/(A

14、p*Ep)=(970988*7087)/(140*5*1.95*105)=50.4mmPZ=Pq×e-(kx+) =976500*e-0.01063=966175(N)(2) BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=966175(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)=966175*0.02052/0.02073=956387(N),L=(Pp*L)/(Ap*Ep)=(956387*3927)/(140*5*1.95*1

15、05)=27.5mmPZ=Pq×e-(kx+) =966175*e-0.02073=946352(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=946352(N)Kx+=0.0015*4.129+0.17*0=0.006191-e-(kx+)= 1-e-0.00619=0.00617,Pp =(P(1-e-(kx+)/( kx+)= 946352*0.00617/0.00619=943294(N),L=(Pp*L)/(Ap*Ep)=(943294*4129)/(140*5*1.95*105)=28.5mm(4) DE段伸長(zhǎng)量:DE=CD=28.5mm,(5) E

16、F段伸長(zhǎng)量:EF=BC=27.5mm,(6) FG段伸長(zhǎng)量:FG=AB=50.4mm,N3束鋼絞線總伸長(zhǎng)量L=(50.4+27.5+28.5)*2=212.8mm;(四) N4束鋼絞線伸長(zhǎng)量1、N4鋼絞線梁端張拉力計(jì)算:N4鋼絞線為5束,梁端張拉力為195300*4=976500(N)2、N4鋼絞線夾角計(jì)算:(1) N4鋼絞線AB段夾角=0(2) N4鋼絞線BC段夾角=3.14159*1.4/180=0.024435(3) N4鋼絞線CD段夾角=0(4) N4鋼絞線DE段夾角=0(5)N4鋼絞線EF段夾角=3.14159*1.4/180=0.024435(6)N4鋼絞線FG段夾角=03、N4鋼

17、絞線每段長(zhǎng)度計(jì)算(1)N4鋼絞線AB段長(zhǎng)度:k=15-12.901-0.733-0.3+0.4=1.466mm(2) N4鋼絞線BC段長(zhǎng)度:k=R=0.733m(3) N4鋼絞線CD段長(zhǎng)度:k=12.901m(4)N4鋼絞線DE段長(zhǎng)度:k=12.901m(5)N4鋼絞線EF段長(zhǎng)度:k= R=0.733m(6)N4鋼絞線FG段長(zhǎng)度:k=15-12.901-0.733-0.3+0.4=1.466mm4、鋼絞線伸長(zhǎng)量計(jì)算:(1)AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=976500(N),Kx+=0.0015*1.466-0.17*0=0.00220,1-e-(kx+)=1-e-0.00220=0.002

18、20Pp =(P(1-e-(kx+)/( kx+)=976500*0.0022/0.0022=976500(N),L=(Pp*L)/(Ap*Ep)=( 976500*1466)/(140*5*1.95*105)=10.5mmPZ=Pq×e-(kx+) =976500*e-0.0022=974354(N)(2) BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=974354(N)Kx+=0.0015*0.733+0.17*0.024435=0.005251-e-(kx+)= 1-e-0.00525=0.00524,Pp =(P(1-e-(kx+)/( kx+)= 974354*0

19、.00524/0.00525=972498(N),L=(Pp*L)/(Ap*Ep)=( 972498*733)/(140*5*1.95*105)=5.2mmPZ=Pq×e-(kx+) =974354*e-0.00525=969252(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=969252(N)Kx+=0.0015*12.901+0.17*0=0.019351-e-(kx+)= 1-e-0.01935=0.01916,Pp =(P(1-e-(kx+)/( kx+)= 969252*0.01916/0.01935=959735(N),L=(Pp*L)/(Ap*E

20、p)=( 959735*12901)/(140*5*1.95*105)=90.7mm(4) DE段伸長(zhǎng)量:DE=CD=90.7mm,(5) EF段伸長(zhǎng)量:EF=BC=5.2mm,(6) FG段伸長(zhǎng)量:FG=AB=10.5mm,N4束鋼絞線總伸長(zhǎng)量L=(10.5+5.2+90.7)*2=212.8mm;四、 邊跨鋼絞線伸長(zhǎng)量計(jì)算(一) N1束鋼絞線伸長(zhǎng)量1、 N1鋼絞線梁端張拉力計(jì)算:N1鋼絞線為5束,梁端張拉力為195300*5=976500(N)2、N1鋼絞線夾角計(jì)算:(1) N1鋼絞線AB段夾角=0(2) N1鋼絞線BC段夾角=3.14159*5/180=0.087266(3) N1鋼絞線

21、CD段夾角=0(4) N1鋼絞線DE段夾角=0(5) N1鋼絞線EF段夾角=3.14159*5/180=0.087266(6) N1鋼絞線FG段夾角=02、 N1鋼絞線每段長(zhǎng)度計(jì)算(1) N1鋼絞線AB段長(zhǎng)度:k=(1.6-0.25-0.09-0.22)2+(15-0.885-3.927-0.3)2)0.5+0.4=10.343(2) N1鋼絞線BC段長(zhǎng)度:k=R=3.927m(3) N1鋼絞線CD段長(zhǎng)度:k=0.885m(4) N1鋼絞線DE段長(zhǎng)度:k=2.663m(5) N1鋼絞線EF段長(zhǎng)度:k= R=3.927m(6)N1鋼絞線FG段長(zhǎng)度:k=(1.6-0.4-0.09-0.22)2+(

22、15-2.663-3.927-0.08)2)0.5+0.4=8.7774、鋼絞線伸長(zhǎng)量計(jì)算:(1)AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=976500(N),Kx+=0.0015*10.343-0.17*0=0.01551,1-e-(kx+)=1-e-0.01551=0.01539Pp =(P(1-e-(kx+)/( kx+)=976500*0.01539/0.01551=968945(N),L=(Pp*L)/(Ap*Ep)=(968945*10343)/(140*5*1.95*105)=73.4mmPZ=Pq×e-(kx+) =976500*e-0.01551=961471(N)(2)

23、 BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=961471(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)= 961471*0.02052/0.02073=951731(N),L=(Pp*L)/(Ap*Ep)=( 951731*3927)/(140*5*1.95*105)=27.4mmPZ=Pq×e-(kx+) =961471*e-0.02073=941745(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=94

24、1745(N)Kx+=0.0015*0.885+0.17*0=0.001331-e-(kx+)= 1-e-0.00133=0.00133,Pp =(P(1-e-(kx+)/( kx+)= 941945*0.00133/0.00133=941945(N),L=(Pp*L)/(Ap*Ep)=( 941945*885)/(140*5*1.95*105)=6.1mm(4) FG段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=976500(N),Kx+=0.0015*8.777-0.17*0=0.01317,1-e-(kx+)=1-e-0.01317=0.01308Pp =(P(1-e-(kx+)/( kx+)=976

25、500*0.01308/0.01317=969827(N),L=(Pp*L)/(Ap*Ep)=( 969827*8777)/(140*5*1.95*105)=62.4mmPZ=Pq×e-(kx+) =976500*e-0.01317=963724(N) (5) EF段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=963724(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)= 963724*0.02052/0.02073=953961(N),

26、L=(Pp*L)/(Ap*Ep)=( 953961*3927)/(140*5*1.95*105)=27.4mmPZ=Pq×e-(kx+) =963724*e-0.02073=943952(N)(6) DE段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=943952(N)Kx+=0.0015*2.663+0.17*0=0.003991-e-(kx+)= 1-e-0.00399=0.00398,Pp =(P(1-e-(kx+)/( kx+)= 943952*0.00398/0.00399=941586(N),L=(Pp*L)/(Ap*Ep)=( 941586*2663)/(140*5

27、*1.95*105)=18.4mmN1束鋼絞線總伸長(zhǎng)量L=73.4+27.4+6.1+18.4+27.4+62.4=215.1mm;(二)N2束鋼絞線伸長(zhǎng)量1、N2鋼絞線梁端張拉力計(jì)算:N2鋼絞線為5束,梁端張拉力為195300*4=976500(N)2、N2鋼絞線夾角計(jì)算:(1) N2鋼絞線AB段夾角=0(2) N2鋼絞線BC段夾角=3.14159*5/180=0.087266(3) N2鋼絞線CD段夾角=0(4) N2鋼絞線DE段夾角=0(5) N2鋼絞線EF段夾角=3.14159*5/180=0.087266(6)N2鋼絞線FG段夾角=03、N2鋼絞線每段長(zhǎng)度計(jì)算(1)N2鋼絞線AB段長(zhǎng)

28、度:k=(1.6-0.5-0.09-0.11)2+(15-2.507-3.927-0.3)2)0.5+0.4=8.715mm(2) N2鋼絞線BC段長(zhǎng)度:k=R=3.927m(3) N2鋼絞線CD段長(zhǎng)度:k=2.507m(4) N2鋼絞線DE段長(zhǎng)度:k=4.263m(5)N2鋼絞線EF段長(zhǎng)度:k= R=3.927m(6)N2鋼絞線FG段長(zhǎng)度:k=(1.6-0.65-0.09-0.11)2+(15-4.263-3.927-0.08)2)0.5+0.4=7.172mm4、鋼絞線伸長(zhǎng)量計(jì)算:(1)AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=976500(N),Kx+=0.0015*8.715-0.17*0=

29、0.01307,1-e-(kx+)=1-e-0.01307=0.01298Pp =(P(1-e-(kx+)/( kx+)=976500*0.01298/0.01307=969776(N),L=(Pp*L)/(Ap*Ep)=( 969776*8715)/(140*5*1.95*105)=61.9mmPZ=Pq×e-(kx+) =976500*e-0.01307=963820(N)(2) BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=963820(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.0

30、2052,Pp =(P(1-e-(kx+)/( kx+)= 963820*0.02052/0.02073=954056(N),L=(Pp*L)/(Ap*Ep)=( 954056*3927)/(140*5*1.95*105)=27.4mmPZ=Pq×e-(kx+) =963820*e-0.02073=944046(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=944046(N)Kx+=0.0015*2.507+0.17*0=0.003761-e-(kx+)= 1-e-0.00376=0.00375,Pp =(P(1-e-(kx+)/( kx+)= 944046*0

31、.00375/0.00376=941535(N),L=(Pp*L)/(Ap*Ep)=( 941535*2507)/(140*5*1.95*105)=17.3mm(4) FG段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=976500(N),Kx+=0.0015*7.172-0.17*0=0.01076,1-e-(kx+)=1-e-0.01076=0.01070Pp =(P(1-e-(kx+)/( kx+)=976500*0.01070/0.01076=971055(N),L=(Pp*L)/(Ap*Ep)=( 971055*7172)/(140*5*1.95*105)=51mmPZ=Pq×e-(kx+

32、) =976500*e-0.01076=966049(N) (5) EF段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=966049(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)= 966049*0.02052/0.02073=9556263(N),L=(Pp*L)/(Ap*Ep)=( 956263*3927)/(140*5*1.95*105)=27.5mmPZ=Pq×e-(kx+) =966049*e-0.02073=946229(N)

33、 (6) DE段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=946229(N)Kx+=0.0015*4.263+0.17*0=0.006391-e-(kx+)= 1-e-0.00639=0.00637,Pp =(P(1-e-(kx+)/( kx+)= 946229*0.00637/0.00639=943267(N),L=(Pp*L)/(Ap*Ep)=( 943267*4263)/(140*5*1.95*105)=29.5mmN2束鋼絞線總伸長(zhǎng)量L=61.9+27.4+17.3+29.5+27.5+51=214.6mm;(三)N3束鋼絞線伸長(zhǎng)量1、N3鋼絞線梁端張拉力計(jì)算:N3鋼絞線為4束

34、,梁端張拉力為195300*4=781200(N)3、 N3鋼絞線夾角計(jì)算:(1) N3鋼絞線AB段夾角=0(2) N3鋼絞線BC段夾角=3.14159*5/180=0.087266(3) N3鋼絞線CD段夾角=0(4) N3鋼絞線DE段夾角=0(5)N3鋼絞線EF段夾角=3.14159*5/180=0.087266(6)N3鋼絞線FG段夾角=03、N3鋼絞線每段長(zhǎng)度計(jì)算(1)N3鋼絞線AB段長(zhǎng)度:k=(1.6-0.75-0.09)2+(15-4.129-3.927-0.3)2)0.5+0.4=7.087mm(2) N3鋼絞線BC段長(zhǎng)度:k=R=3.927m(3) N3鋼絞線CD段長(zhǎng)度:k=4

35、.129m(4)N3鋼絞線DE段長(zhǎng)度:k=5.863m(5)N3鋼絞線EF段長(zhǎng)度:k= R=3.927m(6)N3鋼絞線FG段長(zhǎng)度:k=(1.6-0.9-0.09)2+(15-5.863-3.927-0.08)2)0.5+0.4=5.566mm4、鋼絞線伸長(zhǎng)量計(jì)算:(1)AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=781200(N),Kx+=0.0015*7.087-0.17*0=0.01063,1-e-(kx+)=1-e-0.01063=0.01057Pp =(P(1-e-(kx+)/( kx+)=781200*0.01057/0.01063=776791(N),L=(Pp*L)/(Ap*Ep)=(

36、 776791*7087)/(140*4*1.95*105)=50.4mmPZ=Pq×e-(kx+) =781200*e-0.01063=772940(N)(2) BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=772940(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)= 772940*0.02052/0.02073=765110(N),L=(Pp*L)/(Ap*Ep)=( 765110*3927)/(140*4*1.95*105)=

37、27.5mmPZ=Pq×e-(kx+) =772940*e-0.02073=757082(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=757082(N)Kx+=0.0015*4.129+0.17*0=0.006191-e-(kx+)= 1-e-0.00619=0.00617,Pp =(P(1-e-(kx+)/( kx+)= 757082*0.00617/0.00619=754636(N),L=(Pp*L)/(Ap*Ep)=( 754636*4129)/(140*4*1.95*105)=28.5mm(4) FG段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=781200(N),

38、Kx+=0.0015*5.566-0.17*0=0.00835,1-e-(kx+)=1-e-0.00835=0.00832Pp =(P(1-e-(kx+)/( kx+)=781200*0.00832/0.00835=778393(N),L=(Pp*L)/(Ap*Ep)=( 778393*5566)/(140*4*1.95*105)=39.7mmPZ=Pq×e-(kx+) =781200*e-0.00835=774704(N) (5) EF段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=774704(N)Kx+=0.0015*3.927+0.17*0.087266=0.020731

39、-e-(kx+)= 1-e-0.02073=0.02052,Pp =(P(1-e-(kx+)/( kx+)= 774704*0.02052/0.02073=766856(N),L=(Pp*L)/(Ap*Ep)=( 766856*3927)/(140*4*1.95*105)=27.6mmPZ=Pq×e-(kx+) =774704*e-0.02073=758810(N) (6) DE段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=758810(N)Kx+=0.0015*5.863+0.17*0=0.008791-e-(kx+)= 1-e-0.00879=0.00875,Pp =(P(

40、1-e-(kx+)/( kx+)= 758810*0.00875/0.00879=755357(N),L=(Pp*L)/(Ap*Ep)=( 755357*5863)/(140*4*1.95*105)=40.6mmN3束鋼絞線總伸長(zhǎng)量L=50.4+27.5+28.5+40.6+27.6+39.7=214.3mm;(四)N4束鋼絞線伸長(zhǎng)量1、N4鋼絞線梁端張拉力計(jì)算:N4鋼絞線為5束,梁端張拉力為195300*4=976500(N)2、 N4鋼絞線夾角計(jì)算:(1) N4鋼絞線AB段夾角=0(2) N4鋼絞線BC段夾角=3.14159*1.4/180=0.024435(3) N4鋼絞線CD段夾角=0

41、(4)N4鋼絞線DE段夾角=0(5)N4鋼絞線EF段夾角=3.14159*1.4/180=0.024435(6)N4鋼絞線FG段夾角=03、N4鋼絞線每段長(zhǎng)度計(jì)算(1)N4鋼絞線AB段長(zhǎng)度:k=15-12.901-0.733-0.3+0.4=1.466mm(2) N4鋼絞線BC段長(zhǎng)度:k=R=0.733m(3)N4鋼絞線CD段長(zhǎng)度:k=12.901m(4)N4鋼絞線DE段長(zhǎng)度:k=13.001m(5)N4鋼絞線EF段長(zhǎng)度:k= R=0.733m(6)N4鋼絞線FG段長(zhǎng)度:k=15-13.001-0.733-0.08+0.4=1.586mm4、鋼絞線伸長(zhǎng)量計(jì)算:(1)AB段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張

42、拉力P=976500(N),Kx+=0.0015*1.466-0.17*0=0.00220,1-e-(kx+)=1-e-0.00220=0.00220Pp =(P(1-e-(kx+)/( kx+)=976500*0.0022/0.0022=976500(N),L=(Pp*L)/(Ap*Ep)=( 976500*1466)/(140*5*1.95*105)=10.5mmPZ=Pq×e-(kx+) =976500*e-0.00220=974354(N)(2) BC段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=974354(N)Kx+=0.0015*0.733+0.17*0.0244

43、35=0.005251-e-(kx+)= 1-e-0.00525=0.00524,Pp =(P(1-e-(kx+)/( kx+)= 974354*0.00524/0.00525=972498(N),L=(Pp*L)/(Ap*Ep)=( 972498*733)/(140*5*1.95*105)=5.2mmPZ=Pq×e-(kx+) =974354*e-0.00525=969252(N)(3) CD段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=969252(N)Kx+=0.0015*12.901+0.17*0=0.019351-e-(kx+)= 1-e-0.01935=0.0191

44、6,Pp =(P(1-e-(kx+)/( kx+)= 969252*0.01916/0.01935=959735(N),L=(Pp*L)/(Ap*Ep)=( 959735*12901)/(140*5*1.95*105)=90.7mm(4) DE段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力P=976500(N),Kx+=0.0015*1.586-0.17*0=0.00238,1-e-(kx+)=1-e-0.00238=0.00238Pp =(P(1-e-(kx+)/( kx+)=976500*0.00238/0.00238=976500(N),L=(Pp*L)/(Ap*Ep)=( 976500*1586)/(140*5*1.95*105)=11.3mmPZ=Pq×e-(kx+) =976500*e-0.00238=974179(N) (5) EF段伸長(zhǎng)量:預(yù)應(yīng)力張拉端張拉力等于上一段終點(diǎn)張拉力P=974179(N)Kx+=0.0015*0.733+0.17*0.024435=0.0052

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