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1、隧道及地下工程ANSYS分析第6章高速公路分离式偏压隧道施工过程仿真分析第六章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,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
2、,3,2!设置为平面应变模式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
3、度(围岩)TB,DP,1,,,!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)确定分析标题菜单过滤设置保留结构分析部分菜单!!!第1章大型有限元软件ANSYS简介2MPDATA,DENS,2,,2200TB,DP,2,,,TBMODIF,1,1,0.5e6TBMODIF,1,2,35TBMODIF
4、,1,3,MPDATA,EX,3,,27.5e9MPDATA,PRXY,3,,0.2MPDATA,DENS,3,,2500SAVE!输入密度(加固圈)!采用DP准则!输入凝聚力(加固圈)!输入摩擦角(加固圈)!输入弹性模量(喷射混凝土)!输入泊松比(喷射混凝土)!输入密度(喷射混凝土)!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,
5、,K,9,65,0,,K,10,15,-22.3,,K,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
6、,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,6,10,2LDELE,7LDELE,13,16,3NUMMRG,ALL,,,,LOW!合并所有元素第1章大型有限元软件ANSYS简介3NUMCMP,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,3FITEM,2,3FITEM,2,7FITEM,2,9LCOMB,P51X,,0NUMMRG,ALL,,,,LO
7、WNUMCMP,ALLcircle,16,10.178LOVLAP,3,7LOVLAP,4,8LDELE,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,8,12,2l