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首先给出参数
;问题描述 考虑圣维南原理,取周围岩土的尺寸维隧道尺寸的5~6倍,此处取为15m
;初衬 C50管片外径3.0m,内径2.7m,C50,E=34.5GPa,V=0.167,
;二衬 外径2.7m,内径2.3m,C30,E=30GPa,V=0.167(二衬先不考虑)
;粘质粉土,4.8m,φ=26°,重度=19,c=11KPa,变形模量=10MPa
;中细纱,1.7m,φ=28°,重度=20,c=0KPa,变形模量=13Mpa
;问题描述 考虑圣维南原理,取周围岩土的尺寸维隧道尺寸的5~6倍,此处取为15m
;初衬 C50管片外径3.0m,内径2.7m,C50,E=34.5GPa,V=0.167,
;二衬 外径2.7m,内径2.3m,C30,E=30GPa,V=0.167
;粘质粉土,4.8m,φ=26°,重度=19,c=11KPa,变形模量=10MPa
;中细纱,1.7m,φ=28°,重度=20,c=0KPa,变形模量=13Mpa
;--------------------------------前处理--------------------------------------
title '沉降计算'
plot set title text 'chenjiang'
plot set rotation 20 0 30
plot set center 0 0 5
plot set dist 300
plot set mag 0.8
plot add surface green
plot add axes
plot show
;----------------------------------建立模型---------------------------------
gen zone radcyl p0 0 0 0 p1 4.7 0 0 p2 0 50 0 p3 0 0 4.7 &
size 10 30 10 4 dim 3 3 3 3 group tunnel
gen zone brick p0 4.7 0 0 p1 18 0 0 p2 4.7 50 0 p3 4.7 0 4.7 &
size 10 30 5 group brick1
gen zone cshell p0 0 0 0 p1 3 0 0 p2 0 50 0 p3 0 0 3 &
dim 2.7 2.7 2.7 2.7 size 1 30 10 6 group segment
gen zone cylinder p0 0 0 0 p1 2.7 0 0 p2 0 50 0 p3 0 0 2.7 &
size 6 30 10 group cy
gen zone reflect ori 0 0 0 norm 0 0 -1 range z 0 4.7
gen zone brick p0 0 0 4.7 p1 4.7 0 4.7 p2 0 50 4.7 p3 0 0 9.5 &
size 5 30 5 group brick2
gen zone brick p0 4.7 0 4.7 p1 18 0 4.7 p2 4.7 50 4.7 p3 4.7 0 9.5 &
size 10 30 5 group brick3
gen zone brick p0 0 0 -18 p1 4.7 0 -18 p2 0 50 -18 p3 0 0 -4.7 &
size 5 30 15 group brick4
gen zone brick p0 4.7 0 -18 p1 18 0 -18 p2 4.7 50 -18 p3 4.7 0 -4.7 &
size 10 30 15 group brick5
gen zon reflect norm 1 0 0 orig 0 0 0
;------------------------赋土参数-------------------------------------------
model mohr
;E=13Mpa,v=0.3
prop density 2000 bulk 13e6 shear 5e6 fric 28 coh 1e10 tension 1e10 range z -18 4.7
;E=10Mpa,v=0.25
prop density 1900 bulk 10e6 shear 4e6 fric 26 coh 1e10 tension 1e10 range z 4.7 9.5
;---------------------------初始地应力--------------------------------------
ini xdisp 0 ydisp 0 zdisp 0
ini szz -1.85e5 grad 0 0 1.9e4 range z 4.7 9.5 ;19×4.8+20×4.7=185.2KPa
ini sxx -6.67e4 grad 0 0 6.84e3 range z 4.7 9.5 ;侧压力系数取为0.36 (66.67KPa)
ini syy -6.67e4 grad 0 0 6.84e3 range z 4.7 9.5
ini szz -1.85e5 grad 0 0 2.0e4 range z -18 4.7
ini sxx -6.67e4 grad 0 0 7.2e3 range z -18 4.7
ini syy -6.67e4 grad 0 0 7.2e3 range z -18 4.7
;-------------------------------边界条件-------------------------------------
apply nstress -1e4 range z 9.4 9.6
fix x range x -18.1 -17.9
fix x range x 17.9 18.1
fix y range y 49.9 50.1
fix y range y -0.1 0.1
fix z range z -18.1 -17.9
set grav 0 0 -10 small
;solve
;save small.sav
;-------------------------------开挖 求解-----------------------------------
model null range group cy
;---------------------------
ini xdisp 0 ydisp 0 zdisp 0
;---------------------------
model elas range group segment
prop density 2500 bulk 34.5e9 shear 14.78e9 range group segment
;E=13Mpa,v=0.3
prop density 2000 bulk 13e6 shear 5e6 fric 28 coh 0 range group brick1
prop density 2000 bulk 13e6 shear 5e6 fric 28 coh 0 range group tunnel
prop density 2000 bulk 13e6 shear 5e6 fric 28 coh 0 range group brick4
prop density 2000 bulk 13e6 shear 5e6 fric 28 coh 0 range group brick5
;E=10Mpa,v=0.25
prop density 2000 bulk 13e6 shear 5e6 fric 28 coh 0 range z 4.7 9.5
hist unbal
hist gp xdis 3 0 0
hist gp xdis -3 0 0
hist gp zdis 0 0 9.5
hist gp zdis 0 0 7.5
hist gp zdis 0 0 5.5
hist gp zdis 0 0 4.5
hist gp zdis 0 0 3
hist gp zdis 0 0 -3
set large
;solve
;save n.sav
大虾指正,多谢。
同时共享代码~
[ 本帖最后由 shilw 于 2006-9-10 16:32 编辑 ] |
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