flac3d基坑开挖命令

new

title

基坑开挖模拟—未穿通

;---建立壳模型

gen zone brick p0 -22.5 15 -0.6 p1 -20.5 13 -0.6 p2 0 17.5 -0.6 p3 -22.5 15 0 &

p4 0 15.5 -0.6 p5 0 17.5 0 p6 -20.5 13 0 p7 0 15.5 0

gen zone brick p0 -22.5 -1 -0.6 p1 -20.5 0 -0.6 p2 -22.5 15 -0.6 p3 -22.5 -1 0 &

p4 -20.5 13 -0.6 p5 -22.5 15 0 p6 -20.5 0 0 p7 -20.5 13.0 0

gen zone brick p0 -12.5 -15.5 -0.6 p1 -10.5 -13.5 -0.6 p2 -22.5 -1 -0.6 &

p3 -12.5 -15.5 0 p4 -20.5 0 -0.6 p5 -22.5 -1 0 p6 -10.5 -13.5 0 p7 -20.5 0 0 gen zone brick p0 -12.5 -15.5 -0.6 p1 0 -15.5 -0.6 p2 -10.5 -13.5 -0.6 &

p3 -12.5 -15.5 0 p4 0 -13.5 -0.6 p5 -10.5 -13.5 0 p6 0 -15.5 0 p7 0 -13.5 0 ;---建立对称单元

gen zone reflect dd 90 dip 90 origin 0 0 0

group shell

;---冠梁参数

model elas

sel shell id=1 range group shell

sel shell id=1 elemtype=dkt crossdiag range group shell z -0.6 0

sel shell prope density 1600 iso 2e11 0.0 thick 0.6 range group shell

;---建立基坑模型

generate zone radbric size 5 5 5 5 &

p0 0 0 0 p1 50 0 0 p2 0 0 -20 p3 0 40 0 p4 50 0 -20 &

p5 0 40 -20 p6 50 40 0 p7 50 40 -20 p8 20 0 0 p9 0 0 -8.5 &

p10 0 15 0 p11 20 0 -8.5 p12 0 15 -8.5 p13 20 13 0 p14 20 13 -8.5 fill group kengnei generate zone radbrick size 5 5 5 5 &

p0 0 0 0 p1 0 -40 0 p2 0 0 -20 p3 50 0 0 &

p4 0 -40 -20 p5 50 0 -20 p6 50 -40 0 p7 50 -40 -20 &

p8 0 -13 0 p9 0 0 -8.5 p10 20 0 0 p11 0 -13 -8.5 p12 20 0 -8.5 &

p13 10 -13 0 p14 10 -13 -8.5 fill group kengnei

;---建立对称单元

gen zone reflect dd 90 dip 90 origin 0 0 0

;---连接

attach face rang z -8.6 -8.4;---基坑参数设定莫尔库仑参数

attach face ran y -.1 .1

attach face ran x -.1 .1

group section1 range z -2,0 group kengnei

group section2 range z -4,-2 group kengnei

group section3 range z -6,-4 group kengnei

group section4 range z -8,-6 group kengnei

group section5 range z -8.5,-8 group kengnei

;---基坑土体设置材料模型参数

model mohr

prop bulk 8e9 shear 5e9 fric 35 coh 1e10 tens 1e10

;---设置初始应力状态

ini xvel=0.0

ini density 1600 range z -1,0

ini density 2000 range z -6,-1

ini density 2200 range z -20,-6

ini szz 0. grad 0 0 16000 range z -1 0

ini szz 0. grad 0 0 20000 range z -6 -1

ini szz 0. grad 0 0 22000 range z -20 -6

set gravity 0,0,-10.0

;---设置边界条件

fix x range x -50.1 -49.9

fix x range x 50.1 49.9

fix z range z -19.9 -20.1

fix y range y 40.1 39.9

fix y range y -40.1 -39.9

fix z range group shell

fix x range group shell x -0.1 0.1

fix x range group shell x -22.6 -22.4

fix x range group shell x -20.6 -20.4

fix x range group shell x 22.6 22.4

fix x range group shell x 20.4 20.6

fix x y z range group shell y -13.6 -13.4

fix x y z range group shell y 17.4 17.6

;---监测变量

hist nstep=5

hist unbal

set mechanical force 50

solve

plot

history 1

plot

create trench

add contour disp

add axes black

show

free x range x -0.1 0.1

free y range y -0.1 0.1