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1、!III级围岩，二维，全断面开挖/cle/filname,ch-three-2D,1!几何参数!计算外围区域*set,x1,-60*set,x2,60*set,y1,-30*set,y2,50*set,l1,3.5!锚杆长度*set,r1,0.0125!锚杆半径*set,th1,0.15!初次衬砌厚度*set,th2,0.05!中导洞喷层厚!材料参数!中隔墙*set,ec25,29.5e9*set,uc25,0.2*set,dens25,2500!喷射混凝土*set,ec20,21e9*set,uc20,0.2*set,dens20,2200!锚杆*set,el,170e
2、9*set,ul,0.3*set,densl,7800!围岩*set,er,6e9*set,ur,0.28*set,densr,2500*set,cr,0.8e6*set,fir,40/prep7!定义单元类型et,1,plane42keyopt,1,3,2!平面应变问题et,2,beam3keyopt,2,6,1!打开输出内力选项et,3,link1!定义实常数r,1,th1,th1/12,th1r,2,th2,th2/12,th2r,3,3.*r1**2!几何建模!建中隔墙k,1,-3,-1.69k,2,-3,-0.89k,3,-3,-0.37k,4,-1.33552
3、,-0.37k,5,-0.95134,1.57593k,6,-1.25121,3.53662k,7,1.25121,3.53662k,8,0.95134,1.57593k,9,1.33552,-0.37k,10,3,-0.37k,11,3,-0.89k,12,3,-1.69l,1,2l,2,3l,3,4larc,4,6,5larc,6,7,5,3larc,7,9,8l,9,10l,10,11l,11,12l,12,1!左侧围岩及锚杆圈k,13,-3,0.81k,14,-2.52524,2.42963k,15,-1.,4.11778k,16,-1.77650,4.67036
4、k,17,-2.,5.09399k,18,-2.37658,5.49104k,19,-2.,5.k,20,-3.12567,6.20235k,21,-5.88951,7.72342k,22,-9,8.25k,23,-12.11049,7.72342k,24,-14.8743,6.20235k,25,-16.57763,3.97894k,26,-17.02812,1.21456k,27,-16.9,-0.89k,28,-20.4,-0.89k,29,-20.51567,0.91966k,30,-19.7906,5.36705k,31,-17.05,8.944k,32,-13
5、.26253,11.02838k,33,-9,11.75k,34,-4.,10.80594k,35,0,8.11142k,36,1.,6.85081!导洞左侧圈l,3,13larc,13,6,14!左侧开挖圈larc,6,16,15larc,16,18,17larc,18,20,19larc,20,22,21larc,22,24,23larc,24,26,25l,26,27!锚杆圈l,28,29larc,29,31,30larc,31,33,32larc,33,35,34l,35,36!内圈线合并lcomb,15,16lcomb,15,17lcomb,15,18lcomb
6、,15,19!外圈线合并lcomb,20,21lcomb,20,22lcomb,20,23numcmp,allldiv,14,,,2ldiv,15,,,36ldiv,16,,,36ldiv,17,,,2kdele,19,22,1kdele,25,27,1numcmp,allkdele,17numcmp,all!锚杆线（40根，含建3维时可用的另外20根锚杆）l,16,21l,22,93l,17,20*do,i,23,57,1l,i,115-i*enddol,18,19l,18,2numcmp,all!内层细化区域k,100,-16.9,-1.69k,101,-20.4,-
7、1.69k,102,-24.9,-1.69k,103,-24.9,-0.89k,104,-24.9,16.25625k,105,,16.25625k,106,x1,-1.69k,107,x1,16.25625k,108,-24.9,y2k,109,-24.9,y1l,1,100l,100,101l,101,102l,102,103l,103,104l,104,105l,19,103l,70,104l,18,100l,19,101l,102,109l,102,106l,104,107l,104,108!左侧线镜像至右并建立各面a
