初学者求教高手

可圈可点

想建一个钢管桩码头，桩基和承台材料不一样，桩基和承台浇筑在一起的，不知道如何处理二者接触部分，对承台进行网格划分出现了问题，现附上程序，求指教！不胜感激

/prep7
Et,1,solid187
Et,2,solid186  !土体

MP,EX,1,2.70e10    !桩
MP,nuxy,1,0.167
Mp,dens,1,2500

MP,EX,2,7.6e6       !淤泥质亚粘土
MP,nuxy,3,0.48
Mp,dens,3,1870

MP,EX,3,7.4e6       !基岩，参数待定
MP,nuxy,4,0.35
Mp,dens,4,1990

K,1,0,0
k,2,40,0
k,3,40,20
k,4,0,20

*do,i,1,3,1
  l,i,i+1
*enddo
l,4,1

a,1,2,3,4
aplot

!在GUI中拉伸成体
VEXT,1,,,,,120


!建立桩
wpoff,11,57.5,33
wprot,0,90,0
cyl4,0,0,1,,,,49.5           !第一排一桩

wpoff,6,0,0
cyl4,0,0,1,,,,49.5       !第一排二桩

wpoff,6,0,0
cyl4,0,0,1,,,,49.5   !第一排三桩

wpoff,6,0,0
cyl4,0,0,1,,,,49.5              !第一排四桩

wpcsys,-1
allsel,all,all
vplot

!复制排桩基
allsel
vgen,10,2,5,1,,,6

!建立承台
CSYS,0
wpcsys,-1
wpoff,10,55.5,30
block,0,20,0,3.5,0,60
allsel
vsel,all

!减体
vsel,all
vplot

vsel,s,,,2,41,1
CM,zhuang,VOLU
allsel
VSBV,1,zhuang

vsel,all
vplot



!划分土体
allsel
wpcsys,-1
wpoff,0,5,0
wprota,,90
allsel
vsbw,43
allsel
vplot


!建立桩基
wpcsys,-1
wpoff,11,57.5,33
wprot,0,90,0
cyl4,0,0,1,,,,49.5           !第一排一桩

wpoff,6,0,0
cyl4,0,0,1,,,,49.5       !第一排二桩

wpoff,6,0,0
cyl4,0,0,1,,,,49.5   !第一排三桩

wpoff,6,0,0
cyl4,0,0,1,,,,49.5              !第一排四桩

wpcsys,-1
allsel,all,all
vplot

!复制桩基
allsel
vgen,10,3,6,1,,,6
vplot

allsel
vplot
vsel,all
vsel,u,,,1,,
vsel,u,,,2,,
vplot

!划分承台单元


CSYS,0
wpcsys,-1
allsel
vsel,all
VSEL,S,LOC,Y,55.5,59


type,1
mat,1
esize,0.2
mshape,1,3d
mshkey,0
vmesh,all