最新ANSYS基坑弹性地基梁全程序即详解汇总.docx

1、最新ANSYS基坑弹性地基梁全程序即详解汇总ANSYS基坑弹性地基梁全程序即详解（厂 20kPa-r M W JU 土体参数：连续墙参数：从 N -t-19kN/m3F-2.4X ldPac-10kPay-0.15E 0=20宀 w-1500kN/m41楼板歩数：地卜水位：厚度0.M坑外水位0m不变v /5-2.4XlOl0Pa境内水位位于开挖;0.6m|4J 55 .面VZ ./ . / CreatEIementsElem AttributesTYPE, 2!设置单元类型属性指示器MAT, 1!MP命令中的MAT即材料性能REAL, 0!材料实常数ESYS, 0!材料坐标系统属性指示器EN,

2、 100000+i, 100000+2怜1, 100000+2*i !根据给定的单元号和节点号生成单元*enddoNUMCMP , ALL !所有实体进行重新编号*DO, i, 1,L1-1CSYS, 0!激活默认笛卡尔坐标系N, 100000+2*i-l,i, L2,-lN, 100000+2*i, i, L2-2.5,-l*enddo*DO, i, 1,L1-1TYPE, 2MAT, 1REAL, 0ESYS, 0EN, 100000+i, 100000+2*i-l, 100000+2*i *enddoNUMCMP . ALL !所有实体进行重新编号*DO. i, 1,L2-1CSYS,

3、0N, 100000+2*i-l,0, i,-lN, 100000+2*i, 2.5, i,-l*enddo*DO, i, 1,L2-1TYPE, 2MAT, 1REAL, 0ESYS, 0EN, 100000+i, 100000+2*i-l, 100000+2*i *enddoNUMCMP , ALL !所有实体进行重新编号*DO, i, 1,L2-1CSYS, 0N, 100000+2*i-l, LI, i,-lN, 100000+2% LI-2.5, i,-1*enddo*DO, i, 1,L2-1TYPE, 2 $ MAT , 1 $ REAL, 0ESYS, 0EN, 100000+

4、i, 100000+2*i-l, 100000+2*i *enddoNUMCMP . ALL !所有实体进行重新编号ESEL, S, TYPE, 2 !选择单元类型号为2的单元EGEN, 25, 100000, ALL, ESEL, S, TYPE, 2 !选择单元类型号为2的单元CM, SPRING, ELEM !生成一个叫SPRING由单元组成的元件ALLSALLSEL, ALL !选择所有实体NUMMRG, NODE, 0.01,0.01, LOW !节点合并距离小于0.01则同保留编号底的点NUMCMP, ALL !所有实体进行重新编号*DO, i, 1,25NSEL, S, LOC,

5、乙-l*i!从当前集选择一组节点子集深度-1以下ESLN, S!从已选集中选择NSEL, R, TYPE, 2!选择单元类型号为2的单元R, i, ml*i*b*h,!单位面积内受的力随深度増加而増加EMODIE ALL, REAL, i, !对已存在单元进行修改*enddoNSEL, S, LOC, Z-25 !约束墙底竖向位移D, ALL,.U乙，CMSEL, S, SPRING!选择土弹簧单元NSLE, S!以下命令从已选弹簧集合中选CMSEL, S, WALL!在已选集中选墙单元NSLE, U!从集合中删除刚选择的单兀，即与墙有关的单兀ALLSSAVE/SOLUALLS!无支撑开挖Im

6、坑内水位10坑外0NSEL, S,LOC,乙0, -0.9 !0到0.9的位置即开挖面以上*GET, ZMIN, NODEMNLOC,乙！墙最浅节点处的位置*GET, ZMAX, NODE , MXLOC,乙！墙最深节点处的位置LOCZl=abs (ZMAX) !取绝对值LOCZ2=abs (ZMIN)KA= (TAN(45.0 - FAIl/2)*2 !主动土压力系数!采用水土分算PA1=(Q + GAMA 1 *LOCZ1 )*KA-2.0*C 1 *SQRT(KA) !最深主动土压力公式SA 1 =(Q+GAMA 1 *LOCZ2)*KA-2*C 1 *SQRT(KA)SA2=10*1E

7、3*LOCZ2WA=SA2SA=SA1+SA2pressure=SASLZER=ZMAXSLOPE=(S A-PA)/(LOCZ2-LOCZ1) !增长率SFGRAD, PRES, 0, z, SLZER, SLOPE !沿z方向从-lm开始的面力减少SFE, all, 1,PRES, ,-PA, !alls!开挖面以下加载NSEL, S, LOC, Z,-1.1,-24.9ESLN, SGMSEL, R, wallNSLE, S*GET, ZMIN, NODE, MNLOC,乙，*GET, ZMAX, NODE, MXLOC,乙SLZER 二 ZMAXSLOPE=0SFGRAD, PRES,

8、 O,乙 SLZER, SLOPESFE, all, 1, PRES, -pressure, !alls !将集合扩大到全集cmsel, S, strut !选择内支撑全部杀死EKILL, ALLallsNSEL, S, LOC,乙 0.1,-1.1ESLN, SESEL, R. TYPE, 2 !选择单元类型号为2的单元EKILL, ALL*do, i, 2, 25z=i-l !开挖了 lm要在被动区减去相应的土压力K=ml*z*b*hR, i, K,*enddoTIME, 1 !载荷步1allssolveNSEL, S, LOC,乙 0, -4.9ESLN, SCMSEL, R, wall

9、NSLE, S*GET, ZMIN, NODE, MNLOC, Z,*GET, ZMAX, NODE, MXLOC, Z,LOCZl=abs (ZMAX)LOCZ2=abs (ZMIN)KA= (TAN(45.0 - FAIl/2)*2PA1=(Q + GAMA 1 *LOCZ1 )*KA-2.0*C 1 *SQRT(KA)*IF,PA1,LT, 0, THENPA1=O*ENDIFPA2=10*1E3*LOCZ1PA=PA1+PA2SA 1 =(Q+GAMA 1 *LOCZ2)*KA-2*C 1 *SQRT(KA)SA2=10*1E3*LOCZ2WA=SA2SA=SA1+SA2pressur

10、e=SASLZER=ZMAXSLOPE=(S A-PA)/(LOCZ2-LOCZ1)SFGRAD, PRES, 0, z, SLZER, SLOPESFE, all, 1,PRES, ,-PA,allsNSEL, S, LOC, Z, -5.1,-24.9ESLN, SGMSEL, R, wallNSLE, S*GET, ZMIN, NODE, MNLOC,乙，*GET, ZMAX, NODE, MXLOC,乙，SLZER=ZMAXSLOPE=0SFGRAD, PRES, O,乙 SLZER, SLOPESFE, all, 1, PRES., -pressure,allscmsel, s, strutealive, ALLallsNSEL, S, LOC, Z, 0.1,-5.1ESLN, SESEL, R, TYPE, 2 !选择单元类型号为2的单元EKILL, ALL*do, i, 6, 25z=i-5K=ml*z*b*hR, i, K *enddoTIME, 2 alls solve