斜拉桥ansys建模

1、斜拉桥 ansys 建模/prep7/title, cable_stayed bridge,author is Sunhang /com,define the keypoints*set,alfa1,10!angle of tower upside*set,alfa2,65!angle of tower downside*set,alfa3,79.04594 !angle of tower with bridge surface *set,y1,55.5 *set,y2,33.5 *set,pi,3.1415926 *set,x3,y2/tan(alfa2*pi/180) *set,x2,(y

2、1-y2)*tan(alfa1*pi/180)*set,x1,x2+x3!桥塔顶面到原点的距离 ! 桥塔中部的 Y 轴向长度X 轴向长度 X 轴向长度 X 轴向长度 *set,kp_yy1,0!定义桥塔上部的索锚固点竖向距离(从塔顶算起)!桥塔中部的!桥塔上部的!桥塔的*set,kp_yy2,2.5185 *set,kp_yy3,3.5788 *set,kp_yy4,4.6469 *set,kp_yy5,5.7248 *set,kp_yy6,6.8151 *set,kp_yy7,7.9211 *set,kp_yy8,9.0479 *set,kp_yy9,10.2027 *set,kp_yy10

3、,11.3965 *set,kp_yy11,12.6470 *set,kp_yy12,13.9848 *set,kp_yy13,15.7143 *set,kp_yy14,17.7041 *set,kp_yy15,22.0000 k,1,-x1,y1, k,6,-x1+kp_yy2*tan(alfa1*pi/180),y1-kp_yy2 k,8,-x1+kp_yy3*tan(alfa1*pi/180),y1-kp_yy3 k,10,-x1+kp_yy4*tan(alfa1*pi/180),y1-kp_yy4 k,12,-x1+kp_yy5*tan(alfa1*pi/180),y1-kp_yy5

4、k,14,-x1+kp_yy6*tan(alfa1*pi/180),y1-kp_yy6 k,16,-x1+kp_yy7*tan(alfa1*pi/180),y1-kp_yy7 k,18,-x1+kp_yy8*tan(alfa1*pi/180),y1-kp_yy8 k,20,-x1+kp_yy9*tan(alfa1*pi/180),y1-kp_yy9 k,22,-x1+kp_yy10*tan(alfa1*pi/180),y1-kp_yy10 k,24,-x1+kp_yy11*tan(alfa1*pi/180),y1-kp_yy11 k,26,-x1+kp_yy12*tan(alfa1*pi/18

5、0),y1-kp_yy12 k,28,-x1+kp_yy13*tan(alfa1*pi/180),y1-kp_yy13 k,30,-x1+kp_yy14*tan(alfa1*pi/180),y1-kp_yy14 k,38,-x1+kp_yy15*tan(alfa1*pi/180),y1-kp_yy15kfill,1,6!在已建关键点内内插关键点kfill,6,8kfill,8,10kfill,10,12kfill,12,14kfill,14,16kfill,16,18kfill,18,20kfill,20,22kfill,22,24kfill,24,26kfill,26,28kfill,28,

6、30kfill,30,38*set,kp_numone,38! 定义桥塔上部的最后一个关键点号/com,define and mesh the above part of tower*dim,BBS,40*dim,HHS,40*dim,SSS,40*dim,IIYYS,40*dim,IIZZS,40*set,length1,2.9546108*set,length2,4.9251168*set,width1,3*set,width2,5*set,diff1_length,length2-length1*set,diff1_width,width2-width1*dim,yy,40*do,i,1

7、,38!桥塔上部两个截面的长度之差（纵桥向）!桥塔上部两个截面的宽度之差（横桥向）!定义桥塔上部的关键点竖向距离数组（从塔顶计算）*set,yy(i),y1-ky(i)*set,hhs(i),diff1_length*yy(i)/(y1-y2)+length1 *set,bbs(i),diff1_width*yy(i)/(y1-y2)+width1 SSS(i)=BBS(i)*HHS(i)! 按照实心截面IIZZS(i)=BBS(i)*HHS(i)*3/12IIyyS(i)=HHS(i)*BBS(i)*3/12*enddo*do,i,1,kp_numone-1et,i,beam44keyopt

8、,i,9,0mp,ex,i,3.5e10mp,prxy,i,0.167mp,dens,i,2.6e3mp,alpx,i,1e-05!定义混凝土的线膨胀系数r,i,SSs(i),IIZZS(i),IIyyS(i),BBS(i)/2,HHS(i)/2,IIZZS(i)+IIyyS(i) rmore,SSs(i+1),IIZZS(i+1),IIyyS(i+1),BBS(i+1)/2,HHS(i+1)/2,IIZZS(i+1)+IIyyS(i+1) rmore,0,0,0,0,0,0rmore,0,0,BBS(i)/2,HHS(i)/2,BBS(i+1)/2,HHS(i+1)/2lsel,u,real

9、,1,kp_numonelstr,i,i+1latt,i,i,i lesize,all,1,1lmesh,all,all allsel,all *enddo cm,uptower,elem*get,emin_ts,elem,0,num,min *get,emax_ts,elem,0,num,max allsel kp_ts=emax_ts-emin_ts+1 ! 提取出来桥塔上部的关键点数目 /com,createt the kps of tower down*set,zfirst,1.25 ! 三个控制点的横桥向坐标*set,zsecond,7.4839 *set,kp_numtwo,kp_

10、ts+2 ! 定义桥塔下部的第一个关键点*set,diff1_elem,67! 桥塔下部的单元数目*set,kp_numthree,kp_numtwo+diff1_elem! 桥塔下部的最后一个关键点k,kp_numtwo,-y2/tan(alfa2*pi/180),y2 ,-zfirstk,kp_numthree,-zsecondkfill,kp_numtwo,kp_numthree*dim,BBX,200*dim,HHX,200 *dim,SSX,200*dim,IIYYX,200 *dim,IIZZX,200!定义砍掉部分的长度*set,HHXQ,0.8*sin(alfa2*pi/180

11、) *set,BBXQ,0.4*sin(alfa3*pi/180) *set,SSXQ,HHXQ*BBXQ*dim,IIYYXQ,200 *dim,IIZZXQ,200!*set,w4,2.6875*2 ! 在桥塔折角处单元的宽度!*set,w5,4.3682*2 ! 在坐标原点处单元的宽度*set,w4,4.5361558*set,w5,8.1609208 *do,i,1,diff1_elem+1BBX(i+kp_numone)=2.5*sin(alfa3*3.1415926/180)HHX(i+kp_numone)=w4+(i-1)*(w5-w4)/67SSX(i+kp_numone)=B

12、BX(i+kp_numone)*HHX(i+kp_numone)-SSXQ*2IIYYXQ(i+kp_numone)=HHXQ*BBXQ*3/12+SSXQ*BBX(i+kp_numone)*2/4IIZZXQ(i+kp_numone)=BBXQ*HHXQ*3/12+SSXQ*HHX(i+kp_numone)*2/4IIYYX(i+kp_numone)=HHX(i+kp_numone)*BBX(i+kp_numone)*3/12-IIYYXQ(i+kp_numone)*2IIZZX(i+kp_numone)=BBX(i+kp_numone)*HHX(i+kp_numone)*3/12-IIZZ

13、XQ(i+kp_numone)*2 *enddo *do,i,KP_numone,kp_numone+diff1_elem-1et,i,beam44 keyopt,i,9,0 mp,ex,i,3.5e10mp,prxy,i,0.167 mp,dens,i,2600mp,alpx,i,1e-05! 定义混凝土的线膨胀系数r,i,SSX(i+1),IIZZX(i+1),IIYYX(i+1),BBX(i+1)/2,HHX(i+1)/2,IIZZX(i+1)+IIYYX(i+1) rmore,SSX(i+2),IIZZX(i+2),IIYYX(i+2),BBX(i+2)/2,HHX(i+2)/2,II

14、ZZX(i+2)+IIYYX(i+2) rmore,0,0,0,0,0,0 rmore,0,0,BBX(i+1)/2,HHX(i+1)/2,BBX(i+2)/2,HHX(i+2)/2 *enddo *do,i,kp_numtwo,kp_numthree-1 lsel,u,real,1,150lstr,i,i+1 latt,i-1,i-1,i-1 lesize,all,1,1 lmesh,all allsel,all *enddo esel,u,real,1,kp_numtwo-2cm,downtower,elem allsel,all cmsel,s,downtower*get,emin_tx

15、,elem,0,num,min *get,emax_tx,elem,0,num,maxallsel kp_tx=emax_tx-emin_tx+1esel,all,all cm,tower,elem lsel,s,real,kp_numone,kp_numthree-2 lsymm,z,all,100 allsel,all*set,kp_numfour,kp_numone+2*kp_tx+100+1 ! 主梁的第一个关键点号 !esel,s,ename,beam44 !tunif,0 !tref,-30 !allsel,all/com,couple the tower upside and t

16、ower down cerig,node(kx(38),ky(38),kz(38),node(kx(39),ky(39),kz(39),all,!主梁节点即锚固点到原点的距离 主梁的第一个关键点号 ! 主梁的关键点数目 -1cerig,node(kx(38),ky(38),kz(38),node(kx(139),ky(139),kz(139),all, *set,beam_height,1.2725-0.3!*set,kp_numfour,kp_numone+2*(kp_tx+1)+100+1 ! *set,kp_numfour_inc,210*set,kp_numfive,kp_numfou

17、r+kp_numfour_inc k,kp_numfour,beam_height k,kp_numfive,105,beam_heightkfill,kp_numfour,kp_numfive*do,i,1,kp_numfour_inc lstr,kp_numfour+i-1,kp_numfour+i*enddo *set,enum_beam,emax_tx+1et,enum_beam,beam188mp,ex,enum_beam,3.5e10!截面读入时主梁的平移mp,dens,enum_beam,3038.8mp,alpx,enum_beam,1e-05KEYOPT,enum_beam,

18、7,2 keyopt,enum_beam,8,3 keyopt,enum_beam,9,3 SECTYPE,1,BEAM,MESH,sec1 SECOFFSET,user,-1.40!考虑到二期恒载后的换算密度!定义混凝土的线膨胀系数SECREAD,'main_beam','SECT',' ',MESHk,5000,1000000 lsel,u,real,1,200latt,enum_beam,enum_beam,enum_beam,5000,1 lesize,all,1,1 lmesh,all allsel,all esel,s,ename,b

19、eam188 cm,main_beam,elemallsel,all/com,create the cable element *set,enum_link,enum_beam+1 ! 拉索的开始单元号 *dim,cable_area,13! 定义拉索单元的面积数组*dim,cable_istrain,13! 定义拉索单元的初始应变数组*dim,cable_dens,13/com,define the angle of all cable*set,cable_area1,1.668E-03*set,cable_area2,1.668E-03*set,cable_area3,2.6410E-03

20、*set,cable_area4,2.6410E-03 *set,cable_area5,2.6410E-03*set,cable_area6,2.6410E-03 *set,cable_area7,3.0580E-03*set,cable_area8,3.0580E-03*set,cable_area9,3.0580E-03 *set,cable_area10,3.7530E-03*set,cable_area11,3.7530E-03*set,cable_area12,3.7530E-03*set,cable_area13,3.7530E-03 *set,cable_area_back,2

21、.0155E-02 *set,cable_area(1),cable_area1 *set,cable_area(2),cable_area2*set,cable_area(3),cable_area3*set,cable_area(4),cable_area4 *set,cable_area(5),cable_area5*set,cable_area(6),cable_area6 *set,cable_area(7),cable_area7*set,cable_area(8),cable_area8*set,cable_area(9),cable_area9 *set,cable_area(

22、10),cable_area10*set,cable_area(11),cable_area11*set,cable_area(12),cable_area12*set,cable_area(13),cable_area13*set,cable_dens(1),13.2/cable_area1 *set,cable_dens(2),13.2/cable_area2*set,cable_dens(3),20.9/cable_area3 *set,cable_dens(4),20.9/cable_area4*set,cable_dens(5),20.9/cable_area5 *set,cable

23、_dens(6),20.9/cable_area6*set,cable_dens(7),24.2/cable_area7*set,cable_dens(8),24.2/cable_area8*set,cable_dens(9),24.2/cable_area9*set,cable_dens(10),29.7/cable_area10*set,cable_dens(11),29.7/cable_area11*set,cable_dens(12),29.7/cable_area12*set,cable_dens(13),29.7/cable_area13 *set,cable_dens_back,

24、159.5/cable_area_back*set,cable_istrain1,0.26032E-02 *set,cable_istrain2,0.25568E-02*set,cable_istrain3,0.23210E-02*set,cable_istrain4,0.23456E-02*set,cable_istrain5,0.23892E-02*set,cable_istrain6,0.24412E-02*set,cable_istrain7,0.28199E-02*set,cable_istrain8,0.28719E-02*set,cable_istrain9,0.29143E-0

25、2 *set,cable_istrain10,0.28321E-02*set,cable_istrain11,0.28559E-02 *set,cable_istrain12,0.28743E-02*set,cable_istrain13,0.28926E-02cable_back_istrain1=0.32891E-02 cable_back_istrain2=0.33661E-02 *set,cable_istrain(1),cable_istrain1*set,cable_istrain(2),cable_istrain2*set,cable_istrain(3),cable_istra

26、in3*set,cable_istrain(4),cable_istrain4*set,cable_istrain(5),cable_istrain5*set,cable_istrain(6),cable_istrain6*set,cable_istrain(7),cable_istrain7*set,cable_istrain(8),cable_istrain8 *set,cable_istrain(9),cable_istrain9*set,cable_istrain(10),cable_istrain10 *set,cable_istrain(11),cable_istrain11*se

27、t,cable_istrain(12),cable_istrain12*set,cable_istrain(13),cable_istrain13 /com,create the kps of croSSbeams*set,w5,5.35 ! 横梁到主梁中心的距离*do,i,1,13k,kp_numfour+i*14+400+12,i*7+6,beam_height,-w5k,kp_numfour+i*14+800+12,i*7+6,beam_height,w5 *enddo! 定义拉索单元*do,i,1,13 et,enum_link+i-1,link10 mp,ex,enum_link+i

28、-1,2.0e11mp,prxy,enum_link+i-1,0.3 mp,dens,enum_link+i-1,cable_dens(i) !mp,alpx,enum_link+i-1,1.5e-05!定义索 ( 钢材 )的线膨胀系数lsel,u,real,1,1000 r,i+enum_link-1,cable_area(i),cable_istrain(i)lstr,30-2*(i-1),kp_numfour+i*14+400+12lstr,30-2*(i-1),kp_numfour+i*14+800+12 latt,enum_link+i-1,enum_link+i-1,enum_li

29、nk+i-1lesize,all,1,1 lmesh,alllsel,all *enddo /com,create the back cables *set,enum_back_cable,enum_link+13 et,enum_back_cable,link10 mp,ex,enum_back_cable,2.0e11 mp,prxy,enum_back_cable,0.3 mp,dens,enum_back_cable,cable_dens_backr,enum_back_cable,cable_area_back,cable_back_istrain1 lsel,u,real,1,enum_back_cable-1k,3001,-45, k,3002,-45+2.956 lstr,3001,10latt,enum_back_cable,enum_back_cable,enum_bac