K,41, , ,19396.9,
K,42, , ,22038.9,
K,43, , ,27321.6,
K,44, , ,32604.3,
K,45, , ,35246.3,
K,46, , ,37888.3,
K,47, , ,24680.2,
K,48, , ,29962.9,!创建桥面关键点完成。
LSTR,
!主拱、副拱单元、材料分配及网格划分。 TYPE, 1 !主拱、副拱单元、材料分配。
MAT,
2
REAL, 200
ESYS,
0
SECNUM, 1 FLST,2,13,4,ORDE,5!主拱、副拱线共 13 条：11～17,35,37～41。
FITEM,2,11
FITEM,2,-17
FITEM,2,35
!选择所有元素。
FLST,5,2,4,ORDE,2
FITEM,5,2
FITEM,5,26
LSEL,R, , ,P51X
LPLOT
ALLSEL,BELOW,LINE
NSLL,S,1
DSYM,SYMM,Z, , ALLSEL,ALL !选择所有元素。 FLST,2,2,4,ORDE,2 !施加边 28，58 位移约束。
FITEM,3,6
FITEM,3,7
FITEM,3,8
BSPLIN, ,P51X
LSTR,
1,
9
LSTR,
2,
10
LSTR,
3,
11
LSTR,
4,
12
LSTR,
5,
13
LSTR,
6,
14
LSTR,
15,
8
LSTR,
9, 7
LSTR,
15,
7
FLST,2,2,4,ORDE,2
FITEM,2,1
FITEM,2,9
K,11,4000, ,5000,
K,12,4000, ,7500,
K,13,4000, ,10000,
K,14,4000, ,12500,
K,15,4000, ,33509.9/2, FLST,3,8,3 !创建主拱轮廓线。
FITEM,3,1
FITEM,3,2
FITEM,3,3
FITEM,3,4
FITEM,3,5
19,
24
LSTR,
20,
25
LSTR,
21,
26
LSTR,
26,
24
LSTR,
23,
15
LSTR,
23,
27
LSTR,
27,
18
LSTR,
28,
18
LSTR,
28,
24
FLST,2,4,4,ORDE,4!副拱分割。
FITEM,2,9
FITEM,2,-10
FITEM,2,29
FITEM,2,-30
!定义实常数。 R,8,12, , , , , , RMORE, , , , RMORE RMORE, ,
R,200, , , , , , , RMORE, , , , RMORE RMORE, ,
!建立几何模型 !创建主拱。 K,1,4000,5989.3,, !创建主拱关键点。
K,2,4000,5833.3,2500,
TYPE, 1
MAT,
2
REAL, 200
ESYS,
0
SECNUM, 4 FLST,2,6,4,ORDE,5 ! 副拱立柱线共 6 条:8～10, 24,25,28。
FITEM,2,8
FITEM,2,-10
FITEM,2,24
FITEM,2,-25
FITEM,2,28
LMESH,P51X
!桥面横梁单元、材料分配及网格划分。
K,22,4000, ,19396.9,
K,23,4000, ,22038.9,
K,24,4000, ,32604.3,
K,25,4000, ,35246.3,
K,26,4000, ,37888.3,
K,27,4000, ,24680.2,
K,28,4000, ,29962.9, FLST,3,4,3 !创建副拱轮廓线。
/GO
SFA,P51X,1,PRES,0.005 ACEL,0,9.8,0, !定义重力场。 !求解。
FITEM,3,8
FITEM,3,16
FITEM,3,17
FITEM,3,18
BSPLIN, ,P51X FLST,3,4,3!创建副拱轮廓线。
FITEM,3,18
FITEM,3,19
FITEM,,20
FITEM,3,21
BSPLIN, ,P51X
LSTR,
16,
22
LSTR,
17,
23
LSTR,
FITEM,2,28
FITEM,2,58
/GO
DL,P51X, ,ALL, FLST,2,1,3,ORDE,1 !施加点 8 位移约束。
FITEM,2,8
/GO
DK,P51X, , , ,0,ALL, , , , , , FLST,2,15,5,ORDE,2!施加桥面均布载荷。
FITEM,2,2
FITEM,2,-16
FITEM,2,7
FITEM,2,18
FITEM,2,-23
FITEM,2,31
FITEM,2,-34
FITEM,2,36
FITEM,2,42
FITEM,2,-44
LMESH,P51X
!主拱拉梁、横梁单元、材料分配及网格划分。 TYPE, 1 !主拱拉梁、横梁单元、材料分配。
MAT,
2
REAL, 200
FITEM,2,37
FITEM,2,-41
LMESH,P51X
!桥面主梁单元、材料分配及网格划分。 TYPE, 1 ! 桥面主梁单元、材料分配。
MAT,
2
REAL, 200
ESYS,
0
SECNUM, 2 FLST,2,15,4,ORDE,8 !桥面主梁线共 15 条：7，18～23, 31～34,36,42～44。
K,16,4000,-1627.3,19396.9,!创建副拱关键点 16～28。
K,17,4000,-706.3,22038.9,
K,18,4000, ,27321.6,
K,19,4000,-706.3,32604.3,
K,20,4000,-1627.3,35246.3,
K,21,4000,-3000 ,37888.3,
1,
29!创建桥面横梁。
LSTR,
2,
30
LSTR,
3,
31
LSTR,
4,
32
LSTR,
7,
33
LSTR,
9,
34
LSTR,
10,
35
LSTR,
11,
36
LSTR,
12,
37
LSTR,
13,
38
LSTR,
14,
39
LSTR,
15,
40
LSTR,
22,
41
LSTR,
23,
42
LSTR,
18,
43
LSTR,
!定义截面。 SECTYPE, 1, BEAM, HREC, , 0!定义 1 号截面□。 SECOFFSET, CENT SECDATA,300,650,55,55,55,55,0,0,0,0 SECTYPE, 2, BEAM, RECT, , 0!定义 2 号截面■。 SECOFFSET, CENT SECDATA,850,300,8,8,0,0,0,0,0,0 SECTYPE, 3, BEAM, CTUBE, , 0!定义 3 号截面◎。 SECOFFSET, CENT SECDATA,25,45,8,0,0,0,0,0,0,0 SECTYPE, 4, BEAM, RECT, , 0!定义 4 号截面■。 SECOFFSET, CENT SECDATA,280,280,8,8,0,0,0,0,0,0 SECTYPE, 5, BEAM, HREC, , 0!定义 5 号截面□。 SECOFFSET, USER, -6, 150 SECDATA,600,300,8,8,8,8,0,0,0,0
24,
44
LSTR,
25,
45
LSTR,
26,
46
LSTR,
27,
47
LSTR,
28,
48
FLST,2,4,3!创建桥面。
FITEM,2,46
FITEM,2,34
FITEM,2,9
FITEM,2,26
A,P51X
FLST,3,14,4,ORDE,5
FITEM,3,45
FITEM,3,47
FITEM,3,-57
FITEM,3,59
FITEM,3,-60
ASBL,
1,P51X
!网格划分。 FLST,5,75,4,ORDE,4!单元大小控制。 FITEM,5,1 FITEM,5,-60 FITEM,5,63 FITEM,5,-77 CM,_Y,LINE LSEL, , , ,P51X CM,_Y1,LINE CMSEL,,_Y LESIZE,_Y1,260, , , , , , ,1
TYPE, 1
MAT,
2
REAL, 200
REAL,
ESYS,
0
SECNUM, 5 FLST,2,16,4,ORDE,2 !桥面横梁线共 16 条:45～60。
FITEM,2,45
FITEM,2,-60
LMESH,P51X !扩展显示设置。