各位大神帮忙看一下哪里错了，急得心疼

kally

建的是一个波纹钢板墙，遇到了3个问题：
1、梁偏置之后梁荷载如何施加
2、墙的底部添加支座梁如何约束
3、提示shell单元截面不对
不知道如何修改了，求帮助
Finish$/clear$/PREP7
ET,1,SHELL181
et,2,beam188
R,2,6
MP,EX,1,2e5
MP,PRXY,1,0.3
MP,DENS,1,7800
sectype,1,beam,i
secdata,106,106,200,10,10,6
secoffset,user
K,100,0,0,0
CIRCLE,100,30,,,90

CSYS,1
KFILL,2,1,4,3,1
K,7,30+75,0,0
CSYS,0
KFILL,7,1,4,8,1
KGEN,2,7,11,1,,30

LSTR,8,13
LSTR,9,14
LSTR,10,15
LSTR,11,16
LANG,5,6,90,,0
LANG,4,5,90,,0
LANG,3,4,90,,0
LANG,2,3,90,,0
BSPLIN,1,17,18,19,20,12
LSEL,U,,,14
LDELE,ALL
LSEL,ALL
KWPAVE,12
CSYS,4
LSYMM,X,14
NUMMRG,KP,,,,LOW
LCOMB,ALL,,0
wpoffs,,-30
LSYMM,y,1
csys,0
wpcsys,-1


K,5,,,-3000
L,1,5
Adrag,1,,,,,,2


k,200,-300,,-1500
k,300,3300,,-1500
lsel,s,loc,x,0
lesize,all,75
latt,1,,2,,,200,,1
lmesh,all
lsel,all
lsel,s,loc,x,3000
lesize,all,75
latt,1,,2,,300,,1
lmesh,all

Lsel,all
Lsel,s,tan1,x
Cm,la,line
Lesize,la,75

Lsel,all
Lsel,s,tan1,z
Cm,lb,line
Lesize,lb,75
Allsel,all
Asel,all
AATT,1,2,1
MSHAPE,0,2D
MSHKEY,1
AMESH,ALL
NUMMRG,ALL
allsel,all

esel,s,elem,,1,40
sfbeam,all,1,pres,2*106*3000
sfbeam,all,4,pres,100*3200
allsel,all
nsel,s,node,,203,242
d,all,all
allsel,all
nsel,s,loc,x,0
cerig,22,all
allsel,all
nsel,s,loc,x,3000
cerig,183,all
allsel,all
allsel
finish


/solu
antype,0
autots,1
nsubst,100
neqit,50
outres,all,all
cnvtol,u,,0.05,,0.05            !位移收敛，使用0.05 放松条件
cnvtol,f,,0.05,2,0.05            !力收敛  使用0.5 放松条件
ncnv,0                          !如果不收敛计算不停止
lnsrch,1                        !打开线性搜索
allsel,all
solve

kally

各位有空帮帮忙，指导一下