FLAC-3D深基坑的开挖与支护的命令流 下载本文

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。

命令流如下:

①工况一命令流:

restore inidis0.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 initial xdisplacement 0 ydisplacement 0 zdisplacement 0 initial xvelocity 0 yvelocity 0 zvelocity 0 initial state 0

;监测内撑轴力--------------------------------- ;因工况一未架设支撑,故前面用分号隔开 ;h id 1 sel beams force Fx cid=1 ;h id 2 sel beams force Fx cid=2 ;h id 3 sel beams force Fx cid=3 ;h id 4 sel beams force Fx cid=7 ;h id 5 sel beams force Fx cid=8 ;h id 6 sel beams force Fx cid=9

;监测地表沉降-------------------------------- ;-------------------------------------------- h id 7 gp zdis id 7172 h id 8 gp zdis id 7523 h id 9 gp zdis id 8313 h id 10 gp zdis id 8326 h id 11 gp zdis id 8339 h id 12 gp zdis id 8352 h id 13 gp zdis id 8365 h id 14 gp zdis id 10633 h id 15 gp zdis id 10646 h id 16 gp zdis id 10659 h id 17 gp zdis id 10672 h id 18 gp zdis id 10685 h id 19 gp zdis id 10698 h id 20 gp zdis id 10711 h id 21 gp zdis id 10724 h id 22 gp zdis id 10737

;监测地连墙水平位移------------------------ ;中段------------------------------------------ h id 41 gp ydis id 7172 h id 42 gp ydis id 7120 h id 43 gp ydis id 7068 h id 44 gp ydis id 7016 h id 45 gp ydis id 6964

h id 46 gp ydis id 6912 h id 47 gp ydis id 6860 h id 48 gp ydis id 6808 h id 49 gp ydis id 6756 h id 50 gp ydis id 6704 h id 51 gp ydis id 6703 h id 52 gp ydis id 7380 h id 53 gp ydis id 7328 h id 54 gp ydis id 7276 h id 55 gp ydis id 7275

;边角---------------------------------------- h id 56 gp ydis id 704 h id 57 gp ydis id 639 h id 58 gp ydis id 574 h id 59 gp ydis id 509 h id 60 gp ydis id 444 h id 61 gp ydis id 379 h id 62 gp ydis id 314 h id 63 gp ydis id 249 h id 64 gp ydis id 184 h id 65 gp ydis id 108 h id 66 gp ydis id 106 h id 67 gp ydis id 964 h id 68 gp ydis id 899 h id 69 gp ydis id 823 h id 70 gp ydis id 821

;开挖------------------------------------ ;第一步开挖

model null range x 0 36 y -12 12 z 18.5 19 Solve

Save stage1.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:

FLAC3D 3.00Step 1941 Model Perspective10:25:57 Wed Apr 16 2014Center: X: -2.462e+001 Y: 1.619e+001 Z: -1.916e+000Dist: 3.114e+002Rotation: X: 30.000 Y: 0.000 Z: 290.000Mag.: 0.512Ang.: 22.500Contour of Y-Displacement Magfac = 0.000e+000-2.7710e-007 to -2.5000e-007-2.5000e-007 to -2.0000e-007-2.0000e-007 to -1.5000e-007-1.5000e-007 to -1.0000e-007-1.0000e-007 to -5.0000e-008-5.0000e-008 to 0.0000e+000 0.0000e+000 to 5.0000e-008 5.0000e-008 to 1.0000e-007 1.0000e-007 to 1.5000e-007 1.5000e-007 to 2.0000e-007 2.0000e-007 to 2.2262e-007 Interval = 5.0e-008Itasca Consulting Group, Inc.Minneapolis, MN USA 图 工况一水平位移云图 ②工况二命令流: restore stage1.sav ;第二步开挖

model null range x 0 36 y -12 12 z 12.8 18.5

;设置第一道混凝土 beam内撑------------------------------------- ;设置斜撑

sel beam begin 3,12,19 end 0,9,19 sel beam begin 6,12,19 end 0,6,19 sel beam begin 9,12,19 end 0,3,19 sel beam begin 3,-12,19 end 0,-9,19 sel beam begin 6,-12,19 end 0,-6,19 sel beam begin 9,-12,19 end 0,-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) sel node id=101 12 12 19 sel node id=102 15 12 19 sel node id=103 18 12 19 sel node id=104 15 6 19 sel node id=105 15 -6 19 sel node id=106 12 -12 19 sel node id=107 15 -12 19 sel node id=108 18 -12 19

sel beamsel node 101 104 sel beamsel node 102 104 sel beamsel node 103 104 sel beamsel node 104 105 sel beamsel node 106 105 sel beamsel node 107 105 sel beamsel node 108 105 sel link id 101 101 target zone sel link id 102 102 target zone sel link id 103 103 target zone sel link id 104 106 target zone sel link id 105 107 target zone sel link id 106 108 target zone

;对撑二---------------------------------------- sel node id=109 21 12 19 sel node id=110 24 12 19 sel node id=111 27 12 19 sel node id=112 24 6 19 sel node id=113 24 -6 19 sel node id=114 21 -12 19 sel node id=115 24 -12 19 sel node id=116 27 -12 19 sel beamsel node 109 112 sel beamsel node 110 112 sel beamsel node 111 112 sel beamsel node 112 113 sel beamsel node 114 113 sel beamsel node 115 113 sel beamsel node 116 113 sel link id 107 109 target zone sel link id 108 110 target zone sel link id 109 111 target zone sel link id 110 114 target zone sel link id 111 115 target zone sel link id 112 116 target zone

;对撑三---------------------------------------- sel node id=117 30 12 19 sel node id=118 33 12 19 sel node id=119 36 12 19 sel node id=120 33 6 19 sel node id=121 33 -6 19 sel node id=122 30 -12 19 sel node id=123 33 -12 19