请教各位大虾:
我用FLAC3d建模计算锚杆的应力和位移,发现几个问题不知如何处理,请赐教!
1. 计算出来的位移值偏大,达到10cm,而施加荷载还未达到设计值。
2. 锚杆周边的位移和应力云图好像不太正常。
附源代码:
new
title
gen zone brick p0 0 0 0 p1 6 0 0 p2 0 0 -12 p3 0 6 0 size 15 30 15 ratio 1.0 1.0 1.0
gen zone reflect normal 0 -1 0 origin 0 0 0
gen zone reflect normal -1 0 0 origin 0 0 0
model mohr
prop bulk 9.52e6 shear 4.65e6 coh 0 fric 25
ini dens 2000
fix z range z -11.9 -12.1
fix y range y 5.9 6.1
fix y range y -6.1 -5.9
fix x range x 5.9 6.1
fix x range x -6.1 -5.9
set grav 0 0 -10
set large
hist unbal
sel cable id 1 begin 0.037 0 0.9 end 0.037 0 -3.6 nseg 15
sel cable id 2 begin -0.037 0 0.9 end -0.037 0 -3.6 nseg 15
sel cable prop xcarea 0.0167 emod 200e9 ytens 335e6 gr_k 16.7e6 gr_per 0.459 gr_coh 200
sel cable id 1 pre 5e4 range x 0.0369 0.0371 y -0.001 0.001 z 0.69 0.71
sel cable id 2 pre 5e4 range x -0.0371 -0.0369 y -0.001 0.001 z 0.69 0.71
plot set rotation 30 0 40
plot set center auto
plot add contour disp outline on
plot add sketch
;plot add disp
plot add sel cable force red yellow
plot add sel cable grout stress blue
plot add sel cable grout slip green
plot show
;
step 2000