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1、!确定分析标题!菜单过滤设置!保留结构分析部分菜单/PREP7ET,1,PLANE42KEYOPT,1,1,0KEYOPT,1,2,0KEYOPT,1,3,2KEYOPT,1,5,0KEYOPT,1,6,0ET,2,PLANE42KEYOPT,1,1,0KEYOPT,1,2,0KEYOPT,1,3,2KEYOPT,1,5,0KEYOPT,1,6,0ET，3，BEAM3R,1,0.25,1.5e-3,0.25,,,,MPTEMP,,,,,,,,MPTEMP,1,0MPDATA,EX,1,,0.8e9MPDATA,PRXY,1,,0.38MPDATA,DENS
2、,1,,2000TB,DP,1,,,TBMODIF,1,1,O.2e6TBMODIF,1,2,3OTBMODIF,1,3,MPTEMP,,,,,,,,MPTEMP,1,0MPDATA,EX,2,,3.2e9MPDATA,PRXY,2,,0.32!输入弹性模量（加固圈）!输入泊松比（加固圈）6.1施工过程仿真分析1.材料、实常数和单元类型定义/TITLE，Mechanicalanalysisonrailwaytunnel1ndlining/NOPR/PMETH，OFF，0KEYW，PR_SET,1KEYW，PR_STRUC，1/COM，/COM，Prefer
3、encesforGUIfilteringhavebeensettodisplay/COM，Structural!进入前处理器!设置实体单元类型!设置为平面应变模式!设置实体单元类型!设置为平面应变模式!设置梁单元类型!设置梁单元几何常数!输入弹性模量（围岩）!输入泊松比（围岩）!输入密度（围岩）!采用DP准则进行弹塑性分析!输入凝聚力（围岩）!输入摩擦角（围岩）MPDATA,DENS,2,,2200!输入密度（加固圈）TB,DP,2,,,!采用DP准则TBMODIF,1,1,0.5e6!输入凝聚力（加固圈）TBMODIF,1,2,35!输入摩擦角（加固圈）
4、TBMODIF,1,3,MPDATA,EX,3,,27.5e9!输入弹性模量（喷射混凝土）MPDATA,PRXY,3,,0.2!输入泊松比（喷射混凝土）MPDATA,DENS,3,,2500!输入密度（喷射混凝土）SAVE!保存数据库2．建立几何模型创建关键点。K,1,0,0,,!创建计算区域轮廓线关键点K,2,65,-22.3,,K,3,-65,-22.3,,K,4,65,37.1,,K,5,19.6,37.1,,K,6,-65,-11.8,,K,7,-44.6,-22.3,,K,8,-44.6,0,,K,9,65,0,,K,10,15,-22.3,,K
5、,11,-15,-22.3,,K,12,-15,17.1,,K,13,15,34.4,,K,14,-15,1.169,,!创建隧道轮廓线关键点，上半圆圆心K,15,-18.408,0.22,,!左下拱脚圆心K,16,-15.022,7.887,,!仰拱圆心K,17,0,25.742,,K,18,0,-22.3,,K,27,-11.636,0.22,,!右下拱脚圆心SAVE!保存数据创建线。Circle,14,5.4!画上半圆Circle,15,1.9!画左下拱脚圆Circle,27,1.9!画右下拱脚圆LDELE,5,6,1!删除左右下拱脚圆的部分线LDE
6、LE,8,11,1LOVLAP,7,3!作叠加布尔运算LOVLAP,12,4LDELE,6,10,2LDELE,7LDELE,13,16,3NUMMRG,ALL,,,,LOW!合并所有元素NUMCMP,ALLFLST,2,3,4,ORDE,3FITEM,2,4FITEM,2,5FITEM,2,6LCOMB,P51X,,0FLST,2,3,4,ORDE,3FITEM,2,3FITEM,2,7FITEM,2,9LCOMB,P51X,,0NUMMRG,ALL,,,,LOWNUMCMP,ALLcircle,16,10.178LOVLAP,3,7LOVLAP,4,8
7、LDELE,19LDELE,5,7,1LDELE,10,11,1LDELE,14,16,2FLST,2,4,4,ORDE,4FITEM,2,9FITEM,2,12FITEM,2,-13FITEM,2,15LCOMB,P51X,,0FLST,2,4,4,ORDE,4FITEM,2,3FITEM,2,17FITEM,2,-18FITEM,2,20LCOMB,P51X,,0Circle,14,8.9Circle,15,5.4Circle,27,5.4ldele,8,12,2ldele,13,15,1LOVLAP,6,11LOVLAP,7,16ldele,10,1
8、4,2ldele,17,19,2ldele,11circle,16
