中国地质大学数值模拟上机报告讲解.docx
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中国地质大学数值模拟上机报告讲解
flaCD数值模拟上机报告
计算模型分别如图1、2、3所示,边坡倾角分别为30°、45°、60°,岩土体参数为:
___38
容重r=2500kg/m,弹性模量E=1X10Pa,泊松比卩=0.3,
抗拉强度dt=0.8x106Pa,内聚力C=4.2x104Pa,摩擦角$=17°
试用FLAC3D软件建立单位厚度的计算模型,并进行网格剖分,参数赋值,设定合理的边界条件,利用FLAC3D软件分别计算不同坡角情况下边坡的稳定性,并进行结果分析。
附换算公式:
33
1kN/m=100kg/m
剪切弹性模量:
E1汇1088
G0.38510(Pa)
2(1」)2(10.3)
体积弹性模量:
8
E1x108
K0.833108(Pa)
3(1-2「)3(1一20.3)
坡度为30°的情况
图1倾角为30°的边坡(单位:
m)
算例分析:
命令流:
new
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;建立网格模型
genzonebrickp0000p110000p2020p30040size50110
genzonebrickp040040p1100040p240240p374.64060p4100240&p574.64260p6100060p7100260size30110
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;定义本构模型
modelmohr
propdensity2500.0bulk8.3E7shear3.8E7coh42000.0tens0.8E6friction17
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>;设置边界条件
fixxyzrangez-0.10.1
fixxrangex99.9100.1
fixxrangex-0.10.1
fixy
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;设置重力加速度
setgravity=10.0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;设定初始条件
inisxx0.0syy0.0szz0.0sxy0.0sxz0.0szz0.0
inixvel0.0yvel0.0zvel0.0
inixdis0.0ydis0.0zdis0.0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;安全系数求解defcalfosminf=0.1maxf=2.2loopwhilemaxf-minf>0.01fs=(maxf+minf)/2.0refric=atan(0.30/fs)*180/3.14recoh=42000/fscommandprofricrefriccohrecohsetmechratio1e-5solvestep5000printfsend_commandaa=mech_ratioifaa<1e-5thenminf=fselsemaxf=fsend_ifend_loop
end
calfos
rL^C3I>3.00
Center:
Ratation:
X;S.OOOe^OOl
X:
0.000
V:
I.IWfOOO
Y:
0,000
Z:
1咖旳01
z:
伽
Dist2.775a+M2
Usgj1
Ang.:
22.&M
Slep32345ModelPerspective
22.l9.D4MonNpv253013
Migf^c=QQQQe*QOQ
图1网格剖分图
ItascaConsuttr^Group.inc.Minneap^is.MNUSA
Center:
Ratation:
X;S.OOOe^OOl
X:
0.000
V:
I.IWfOOO
Y:
0,000
l.啲1
z:
o.wo
Dist2.775fi+M2
Usgj1
Ang.:
22.500
图2速度矢量图
rL^C3£>33
Sep32345ModelPerspective22:
i%40MonNw252W
Magfac-0QQOevOOO
Velocity
Maximum^3J63e-005
Unes^te
ItascaCDnsuttngGroup.Inc.NlriiwiHta.MNUSA
ContourofVelocityMag,
Magfac-QBOQOe*OQO
IO.OOOOfr+OOOto2.5000e-0062.500GK7.5DOQHM6to1.0000乐蹴
■何0毎005B12500^005[.25OOMO5曲15000^005I.SDOO&^OStflUSDOeOS
1ITBOMKHtDNDOOdJfi[2.0000e-(KI«h2250ZK
12.25DQ^OOStO2.5000^005
_2.500(X105102.7500^'2.7&Wte^05to3.DD0陆0(再
■a.OOOOfrOBb3.1627fr00fi
Inter间二2.5e-006
ItascaConsuttngGroupJnc.Minneapolis,MNUSA
图3速度等值线图
Step32345ModelPwspKtive2217:
31MmNw252013
Center
K:
S.OOCe+DOl
Y:
1.000&+D00
2:
10DOe*001
Dist:
2.775e-0G2
Contourof圧朋賊ei玳对Mag.
Magfac=D.OO&e+CO0
IO.OOCOe+DOOto2.500te-DD1
2.50Xte-001toS.OOOOe^OOl
S.OOQOfrOOlta7.5II.OOXte+DODto
'1.2500a+DDDto
'I.KXJOa+DDDto
'1.75OCte+DO0t3ZOOOte+GOO
=2.00003+000to2.2500^40002.25C(te+DD0to25000^0002.5(X)0s+DD0to27500^-000
"2.7500s+DDDt33.000te4GOO
I3.0000e+DD0tD3.2449护000
IntBryal=2.5e-001
PLAC3D3,00
Step自加酣Mod^Perapeclive22:
13:
15MonNov252013
Ce^anRDtation:
X.5000e+00lX:
0.000
Y:
1QOOe+DOOY:
O.OGO
Z:
3.00084-001Z:
Q.DDD
Dist:
2.7758*002Mag.:
1
Ang:
22.500
ContourofSliearStrainIntKdient
Uaghc=0.0如000
4.9700a-OG4ta2.500Cfl-OQ2
2.StX10fi-002ta5.0000^0025.0000^0219tSOOOeg7.5000fr002toi.OOOOea*1.a(KJ0e-C01to1.25CKte-(Mt1.25008-001tai.5000e-0011.5tW®1tp
175006-C01to2.0000e^»i
2QQOOe-WIto2.25Wfi-«122500^001ta站OOO&ODY
2.50008-001172.5767fr^0t
lntwvai=2.5&^2
M畀pConsultingGnoup.IncMinneapolis,mnUSA
rLAesn3.oo
StBq32345M«fe^Perepwtivfi22:
5l:
lSTueNw262013
CwierRotation:
K:
5.D00fl+DD1X:
D.CXX)
Y:
1OOOe+OOOY;O.WO
2:
S.MOefQOl2:
O.DDO
Dot:
2.775BtOG2Mag.:
1
Ang22.500
Surface
姑妙站sD.OOOei-oOaCoDtcmrofSXX
l.'agfK^O.OOte+OOO
GradtaniCalculation
-9.0O95e-K»5tD-500006+005-9.DDDOe+OMtD-S.OOOOe+005■a.DODOB+ODSto^.OOOOfl+M5-7OOOOe-KXJSto-600006+005-S.3DDte40D5tD-S.D000fl+DD5-530006+005tc^000Oe+005J.DDDDe+OT5to^.D000a+DD5-3.{W0e4(Wt?
-2t)000fi+M5-2.000064005to-1OQOOe+M5■I.MDDfi-bOOStoO.CKCOe+OOGO.OOQOe+OOOto3BOGGs-f004
lnlervdi=t.da+005
>tascBConsultingGmup.Inc.Hinneapohs.MNUSA
图5剪应变增量云图
图6最小主应力云图
JFLAGD3,00
Surfece
Magf^c-OOQOeContourofSZZMagfac^O.OOOetOOOGradientC^cuWion
規449曲伽tD^1.400Gfi+M6d.3D-6.0000e+C05-5.interval-l.0e*005
ItascaConsuttngGroup,Inc.MlnnBEfHis.MNUSA
图7最大主应力云图
安全系数:
Endingat:
15:
24:
16TueNou262013
Fish>printfs
Fs=1,45351562509Oe+090
因此,最终计算边坡稳定性系数为1.453516
坡度为45°的情况
40
40
0
100
44
图2倾角为45°的边坡(单位:
m)算例分析:
命令流:
new
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;建立网格模型
genzonebrickp0000pl10000p2020p30040size50110
genzonebrickp040040p1100040p240240p360060p4100240&p560260p6100060p7100260size30110
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;定义本构模型
modelmohr
propdensity2500.0bulk8.3E7shear3.8E7coh42000.0tens0.8E6friction17
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;设置边界条件
fixxyzrangez-0.10.1
fixxrangex99.9100.1
fixxrangex-0.10.1
fixy
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>;设置重力加速度
setgravity=10.0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;设定初始条件
inisxx0.0syy0.0szz0.0sxy0.0sxz0.0szz0.0
inixvel0.0yvel0.0zvel0.0
inixdis0.0ydis0.0zdis0.0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;安全系数求解
defcalfos
minf=0.1
maxf=2.2
loopwhilemaxf-minf>0.01fs=(maxf+minf)/2.0refric=atan(0.30/fs)*180/3.14recoh=42000/fs
command
profricrefriccohrecohsetmechratio1e-5solvestep5000printfs
end_commandaa=mech_ratioifaa<1e-5thenminf=fselsemaxf=fs
end」fend_loopendcalfos
Sisp17M5F.ladelP#rs|>Ktiv&22:
39:
471.1snNov252013
Cwiter:
X:
fi.OMe+DDl¥:
1jK»€+OMZ:
WDBtMl□st:
2.775#+0G2
绛179^6ModmPerapeclive22:
^1:
10MoflNov252Q13
Center:
RotatiDH;
X-.5000e+00l
X:
0.000
Y:
1QOOe+DOO
Y:
0.000
Z:
3.000e+001
Z:
0.000
Dis*:
27756*002
Mag.:
f
Ang:
22.500
Sutfece
Vagtac=0.000e<-000
M阿就-D.oooei-Qoo
Velocity
Maximum=1.9Q1e-Q04
Linastyle
ttascaConsultingGroup,Inc.Uinneapol^MNUSA
图2速度矢量图
FLA3.00
Stei&179*45M<fPers(?
ec5jve22:
«:
D5MonNov252Q13
Censn
Rot^iDn:
X:
5000e+00i
X:
0.000
¥:
1DOOe+DOO
Y:
0.000
Z:
3.000e+001
Z:
0.000
□tst:
2.7758*002
Mag.:
T
Ang:
22.500
CoutourofVelocityMag.
Magtoc=O.OOO^OW
1.0000e^04t.2000^0041.4G0Ge-O041.500MD41.8000e^04■.9Q12^XM
IO.OOOOe+OOOto2.OOOOe^Q52.00000-005to4.0000^0054.0000fi-C05to6.0000e-005&00Kfeg讪&000ZW5二SQOOOe-OOSto二I.OOOOe-QCMtO
_1.20003-004toI.JOOOfi-OMto
「1&QQ0©伽悟
□Ii.soooe-awto
lntarc^=2.0e^N6
图4位移等值线图
FLAC3H3.00
Step179^5Mod科PerapedMe
22:
46:
19MofiNov252013
£阳常RDtatlon;
X.5000e+00l¥'、0.000
Y:
1QOOe+OOOY:
0.000
Z:
3.00084-001Z:
a.DDD
Dist:
2.775BtQO2Msg.:
1
Ang:
22.500
CoGtour&fDi^laeementMat.
gfac-O.OOOei-lMO
O.OOOOe+DOO102.5000e-0ai2.5QOOS-OO1toS.oaooe-ooii.tXXMfrCOIta7.5000^0017SOOOe-COito1OOOOe+OOO1KJOOe+QQO(a1.25006+000(o
1.SOOOs+WOta
1.TSOOfi+DMlaSDOOOe+OOOU2.25DOe+OQOlo15M0a+DQ0(aitssaConsuMngGroup,Inc.Minneapolis,MNUSA
Step17945Mod4fPersp«-ive
22:
4147ManNov252013
CoutourofShearStrainIncreiueat
I4.63908-004to2.5aOfta-OQ22.5tX)0frCa2tD5.000052
50000fr■1.aoooe-coita1.2SOOfrOOt
1.25008-001tot.5000e-00l
1.5000^001to1.7500^001
1.7500fr^1to2.00006^01_20000e-001to2.25004-001_2.2500^001to站000XMY|2.50008-001to2.5517s-00t
FLAC3I>3.00
Stop17945MwielPerspective23:
01:
07TueNov2£2013
Center'
X:
5.0Dte+OHY;i.OOOe-KWOZ:
3.DQ0e+Q0l
Cist2.775^X2
Ration;
X:
0.000
¥:
0.000
Z:
0.OD0
Mag.:
t
Ang..22.500
Magrac=O.OCOe+oM
ContourofSXX
Magfac-O.OWe+OOO
GradientGalciiaSion
-9.00炯.wO0e+00fi-2.00OO6+M5to-I.0000e+O05*1.00008+005toG.OOOOfr+OOOO.OOOOe+OO01&4.537264004
lntep/al=I.G^i-QGS
ItascaConsultingGncup.Ifk.MlnneapKts.MNUSA
图6最小主应力云图
Step17945M«f^PerepK*ivfi23:
01.31TueNev262013
Cwfler
Rotation:
X=5.00(te+DD1
x:
d.ooo
Y:
1OOOe+DOO
Y;O.OM
2:
M.畑+QQ1
2:
Q.DOO
Dot;2.7758*002
Mag.^1
Ang:
22.500
\!
白gfit=D.QMei-OOO
ContourofSXX
Graci'BntG^lculatiDn
HagfK二O.OOte+OOC
I-9.W98e-K»5tD^OOOOe+OOS-g.oDooe+oos恰-a.ooooe+wjs■a.DOOOfi+ODSto^.OOOOs+MS_-7.00006+005to-6.0000S+005--S.3D0te4O05ts-5.D000fl+DD52-5.000084005to^.OOOOe+OOS-^.DDDDe+OOSto-3.0000a+DD5_-3.MWe4W5t?
-20000e+M52龙DOOOe*(X)5to”1Q000e+QQ5_-1.DKH)fi-f■O.OOOOe+OOOlo3抽404
1血曲=VOe+005
CoutourofSZZ
Magfit=£i.QOOe+QOO
安全系数:
Endingat:
15:
31:
24TueNou262013
Fish>printfs
Fs-1・1O8984375000e*60O
因此,最终边坡的稳定性系数为1.10894
三、坡度为60°的情况
48.45
100
图3倾角为60°的边坡(单位:
m)
算例分析:
命令流:
new
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;建立网格模型
genzonebrickp0000pl10000p2020p30040size50110
genzonebrickp040040p1100040p240240p351.55060p4100240&p551.55260p6100060p7100260size30110
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;定义本构模型
modelmohr
propdensity2500.0bulk8.3E7shear3.8E7coh42000.0tens0.8E6friction17
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;设置边界条件
fixxyzrangez-0.10.1
fixxrangex99.9100.1
fixxrangex-0.10.1
fixy
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;设置重力加速度
setgravity=10.0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;设定初始条件
inisxx