完整word版FLAC3D深基坑的开挖与支护的命令流Word下载.docx
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完整word版FLAC3D深基坑的开挖与支护的命令流Word下载.docx
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根据现行国家和个地方规范的要求,参考已有的研究成果,影响范围为4倍开挖深度,整个模型的尺寸为96×
144×
39(长×
宽×
高m)。
为减少不必要的网格,网格划分原则为基坑附近密集,远处稀疏,模型共有节点10890个,单元9408个。
模型如图所示。
图建立模型
命令流如下:
n
;
开挖土体
genzonebricksize12410p00,0,0p136,0,0p20,12,0p30,0,19
开挖下部土体
genzonebricksize1244p00,0,-20p136,0,-20p20,12,-20p30,0,0
groupexc
实体地连墙
genzonebricksize12110p00,12,0p136,12,0p20,12.8,0p30,12,19
genzonebricksize1214p00,12,-20p136,12,-20p20,12.8,-20p30,12,0
genzonebricksize1410p0-0.8,0,0p10,0,0p2-0.8,12,0p3-0.8,0,19
genzonebricksize144p0-0.8,0,-20p10,0,-20p2-0.8,12,-20p3-0.8,0,0
genzonebricksize1110p0-0.8,12,0p10,12,0p2-0.8,12.8,0p3-0.8,12,19
genzonebricksize114p0-0.8,12,-20p10,12,-20p2-0.8,12.8,-20p3-0.8,12,0
groupwallrangegroupexcnot
--------------------------------------------------------------------------------
土体
genzonebricksize12510p00,12.8,0p136,12.8,0p20,32,0p30,12.8,19
genzonebricksize1510p0-0.8,12.8,0p10,12.8,0p2-0.8,32,0p3-0.8,12.8,19
genzonebricksize5510p0-20.8,12.8,0p1-0.8,12.8,0p2-20.8,32,0p3-20.8,12.8,19
genzonebricksize5110p0-20.8,12,0p1-0.8,12,0p2-20.8,12.8,0p3-20.8,12,19
genzonebricksize5410p0-20.8,0,0p1-0.8,0,0p2-20.8,12,0p3-20.8,0,19
genzonebricksize1254p00,12.8,-20p136,12.8,-20p20,32,-20p30,12.8,0
genzonebricksize154p0-0.8,12.8,-20p10,12.8,-20p2-0.8,32,-20p3-0.8,12.8,0
genzonebricksize554p0-20.8,12.8,-20p1-0.8,12.8,-20p2-20.8,32,-20p3-20.8,12.8,0
genzonebricksize514p0-20.8,12,-20p1-0.8,12,-20p2-20.8,12.8,-20p3-20.8,12,0
genzonebricksize544p0-20.8,0,-20p1-0.8,0,-20p2-20.8,12,-20p3-20.8,0,0
groupnearsoilrangegroupexcnotgroupwallnot
---------------------------------------------------------------------------------
genzonebricksize12910p00,32,0p136,32,0p20,92,0p30,32,19
genzonebricksize1910p0-0.8,32,0p10,32,0p2-0.8,92,0p3-0.8,32,19
genzonebricksize5910p0-20.8,32,0p1-0.8,32,0p2-20.8,92,0p3-20.8,32,19
genzonebricksize3910p0-60,32,0p1-20.8,32,0p2-60,92,0p3-60,32,19
genzonebricksize3510p0-60,12.8,0p1-20.8,12.8,0p2-60,32,0p3-60,12.8,19
genzonebricksize3110p0-60,12,0p1-20.8,12,0p2-60,12.8,0p3-60,12,19
genzonebricksize3410p0-60,0,0p1-20.8,0,0p2-60,12,0p3-60,0,19
深部土体
genzonebricksize1294p00,32,-20p136,32,-20p20,92,-20p30,32,0
genzonebricksize194p0-0.8,32,-20p10,32,-20p2-0.8,92,-20p3-0.8,32,0
genzonebricksize594p0-20.8,32,-20p1-0.8,32,-20p2-20.8,92,-20p3-20.8,32,0
genzonebricksize394p0-60,32,-20p1-20.8,32,-20p2-60,92,-20p3-60,32,0
genzonebricksize354p0-60,12.8,-20p1-20.8,12.8,-20p2-60,32,-20p3-60,12.8,0
genzonebricksize314p0-60,12,-20p1-20.8,12,-20p2-60,12.8,-20p3-60,12,0
genzonebricksize344p0-60,0,-20p1-20.8,0,-20p2-60,12,-20p3-60,0,0
groupfarsoilrangegroupexcnotgroupwallnotgroupnearsoilnot
genmerge0.01
plotblockgroup
镜像对称
genzonerefnor0-10
显示坐标轴
plotaddaxesred
边界条件-------------------------------------------------------------------------
fixxrangex-60.1-59.9
fixxrangex35.936.1
fixyrangey91.992.1
fixyrangey-91.9-92.1
fixzrangez-20.1-19.9
重力-----------------------------------------------------------------------------
setgrav00-9.81
土体材料属性----------------------------------------------------------------------
modelmohr
填土
probulk6e6she2.22e6fric9coh20000dens1850rangez16.919.1
淤泥质土
probulk3e6she1.07e6fric4coh5000dens1830rangez12.917.1
粘土
probulk12e6she4.62e6fric15coh27500dens1970rangez10.913.1
粉土
probulk10e6she3.8e6fric18coh8000dens2000rangez8.911.1
中砂,粗砂,砾砂
probulk25e6she9.68e6fric30coh0dens2050rangez2.99.1
圆砾层
probulk32e6she12.8e6fric32coh0dens2200rangez-4.13.1
泥岩
probulk50e6she22.5e6fric70coh0dens2200rangez-21.1-3.9
给地连墙赋本构,属性------------------------------
merangegroupwall
inidensity2500rangegroupwall
proyoung40e9poisson0.167rangegroupwall
计算初始平衡
plotsetrotation20030
setmechratio1e-4
plotconszz
Solve
Saveinidis0.sav;
保存初始平衡,后面再调用
通过上述命令流可得如下图所示:
图初始平衡应力
三、开挖与支护
该工程分四次开挖,架设三道支撑(第一道为钢筋混凝土支撑,第二、三道为钢支撑),故把工程分成四个工况。
第一工况:
开挖0.5m;
第二工况:
开挖6.7m,架设第一道支撑;
第三工况:
开挖11.8m,架设第二道支撑;
第四工况:
开挖至坑底(19m),架设第三道支撑。
工况一命令流:
restoreinidis0.sav;
恢复前面的初始平衡
速度、位移、塑性区归零;
开挖前将其清零
initialxdisplacement0ydisplacement0zdisplacement0
initialxvelocity0yvelocity0zvelocity0
initialstate0
监测内撑轴力---------------------------------;
因工况一未架设支撑,故前面用分号隔开
hid1selbeamsforceFxcid=1
hid2selbeamsforceFxcid=2
hid3selbeamsforceFxcid=3
hid4selbeamsforceFxcid=7
hid5selbeamsforceFxcid=8
hid6selbeamsforceFxcid=9
监测地表沉降--------------------------------
--------------------------------------------
hid7gpzdisid7172
hid8gpzdisid7523
hid9gpzdisid8313
hid10gpzdisid8326
hid11gpzdisid8339
hid12gpzdisid8352
hid13gpzdisid8365
hid14gpzdisid10633
hid15gpzdisid10646
hid16gpzdisid10659
hid17gpzdisid10672
hid18gpzdisid10685
hid19gpzdisid10698
hid20gpzdisid10711
hid21gpzdisid10724
hid22gpzdisid10737
监测地连墙水平位移------------------------
中段------------------------------------------
hid41gpydisid7172
hid42gpydisid7120
hid43gpydisid7068
hid44gpydisid7016
hid45gpydisid6964
hid46gpydisid6912
hid47gpydisid6860
hid48gpydisid6808
hid49gpydisid6756
hid50gpydisid6704
hid51gpydisid6703
hid52gpydisid7380
hid53gpydisid7328
hid54gpydisid7276
hid55gpydisid7275
边角----------------------------------------
hid56gpydisid704
hid57gpydisid639
hid58gpydisid574
hid59gpydisid509
hid60gpydisid444
hid61gpydisid379
hid62gpydisid314
hid63gpydisid249
hid64gpydisid184
hid65gpydisid108
hid66gpydisid106
hid67gpydisid964
hid68gpydisid899
hid69gpydisid823
hid70gpydisid821
开挖------------------------------------
第一步开挖
modelnullrangex036y-1212z18.519
Savestage1.sav;
保存工况一,方便下一工况调用
运行上面命令流,得到位移云图,如下所示:
图工况一水平位移云图
工况二命令流:
restorestage1.sav
第二步开挖
modelnullrangex036y-1212z12.818.5
设置第一道混凝土beam内撑-------------------------------------
设置斜撑
selbeambegin3,12,19end0,9,19
selbeambegin6,12,19end0,6,19
selbeambegin9,12,19end0,3,19
selbeambegin3,-12,19end0,-9,19
selbeambegin6,-12,19end0,-6,19
selbeambegin9,-12,19end0,-3,19
设置对撑
对撑一------------------------------------------;
通过结构节点建立结构单元(也可通过坐标指定建立,然后再删除节点创建新的节点)—(陈育民书P150)
selnodeid=101121219
selnodeid=102151219
selnodeid=103181219
selnodeid=10415619
selnodeid=10515-619
selnodeid=10612-1219
selnodeid=10715-1219
selnodeid=10818-1219
selbeamselnode101104
selbeamselnode102104
selbeamselnode103104
selbeamselnode104105
selbeamselnode106105
selbeamselnode107105
selbeamselnode108105
sellinkid101101targetzone
sellinkid102102targetzone
sellinkid103103targetzone
sellinkid104106targetzone
sellinkid105107targetzone
sellinkid106108targetzone
对撑二----------------------------------------
selnodeid=109211219
selnodeid=110241219
selnodeid=111271219
selnodeid=11224619
selnodeid=11324-619
selnodeid=11421-1219
selnodeid=11524-1219
selnodeid=11627-1219
selbeamselnode109112
selbeamselnode110112
selbeamselnode111112
selbeamselnode112113
selbeamselnode114113
selbeamselnode115113
selbeamselnode116113
sellinkid107109targetzone
sellinkid108110targetzone
sellinkid109111targetzone
sellinkid110114targetzone
sellinkid111115targetzone
sellinkid112116targetzone
对撑三----------------------------------------
selnodeid=117301219
selnodeid=118331219
selnodeid=119361219
selnodeid=12033619
selnodeid=12133-619
selnodeid=12230-1219
selnodeid=12333-1219
selnodeid=12436-1219
selbeamselnode117120
selbeamselnode118120
selbeamselnode119120
selbeamselnode120121
selbeamselnode122121
selbeamselnode123121
selbeamselnode124121
sellinkid113117targetzone
sellinkid114118targetzone
sellinkid115119
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