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1、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!确定分析标题/NOPR!菜单过滤设置/PMETH，OFF，0KEYW，PR_SET，1KEYW，PR_STRUC，1!保留结构分析部分菜单/COM，/COM，PreferencesforGUIfilteringhavebeensettodisplay:/COM，Structural/PREP7!进入前处理器ET,1,PLANE42!设置实体单元类型KEYOPT,1,1,0KEYOPT,1,2,0KEYOPT,1,3,2!设置为平
2、面应变模式KEYOPT,1,5,0KEYOPT,1,6,0ET,2,PLANE42!设置实体单元类型KEYOPT,1,1,0KEYOPT,1,2,0KEYOPT,1,3,2!设置为平面应变模式KEYOPT,1,5,0KEYOPT,1,6,0ET，3，BEAM3!设置梁单元类型R,1,0.25,1.5e-3,0.25,,,,!设置梁单元几何常数MPTEMP,,,,,,,,MPTEMP,1,0MPDATA,EX,1,,0.8e9!输入弹性模量（围岩）MPDATA,PRXY,1,,0.38!输入泊松比（围岩）MPDATA,DENS,1,,2000!输入密度（围岩）TB,DP,1,,,
3、!采用DP准则进行弹塑性分析TBMODIF,1,1,0.2e6!输入凝聚力（围岩）TBMODIF,1,2,30!输入摩擦角（围岩）TBMODIF,1,3,MPTEMP,,,,,,,,MPTEMP,1,0MPDATA,EX,2,,3.2e9!输入弹性模量（加固圈）MPDATA,PRXY,2,,0.32!输入泊松比（加固圈）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）TBMODIF,1,3,MPDATA,EX,3,,27.5e9!
4、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1．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,11,-15,-22.3,,K,12,-15,17.1,,K,13,15,34.4,
5、,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LDELE,8,11,1LOVLAP,7,3!作叠加布尔运算LOVLAP,12,4LDELE,6,10,2LDEL
6、E,7LDELE,13,16,3NUMMRG,ALL,,,,LOW!合并所有元素NUMCMP,ALL!压缩所有编号FLST,2,3,4,ORDE,3!作加运算FITEM,2,4FITEM,2,5FITEM,2,6LCOMB,P51X,,0FLST,2,3,4,ORDE,3!作加运算FITEM,2,3FITEM,2,7FITEM,2,9LCOMB,P51X,,0NUMMRG,ALL,,,,LOW!合并所有元素NUMCMP,ALL!压缩所有编号circle,16,10.178!画仰拱圆LOVLAP,3,7!作叠加布尔运算LOVLAP,4,8LDELE,19!删除部分线LDELE,5
7、,7,1LDELE,10,11,1LDELE,14,16,2FLST,2,4,4,ORDE,4!做线加布尔运算FITEM,2,9FITEM,2,12FITEM,2,-13FITEM,2,15LCOMB,P51X,,0FLST,2,4,4,ORDE,4!做线加布尔运算FITEM,2,3FITEM,2,17FITEM,2,-18FITEM,2,20LCOMB,P51X,,0Circle,14,8.9!画上半圆(加固圈)Circle,15,5.4!画左下拱脚圆(加固圈)Circle,27,5.4!
