最新ANSYS公路隧道二次衬砌受力分析.docx
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最新ANSYS公路隧道二次衬砌受力分析.docx
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最新ANSYS公路隧道二次衬砌受力分析
ANSYS公路隧道二次衬砌受力分析
课程设计任务书
题目公路隧道二次衬砌受力分析
一、设计的目的
学会利用ANSYS的功能分析隧道二次衬砌等一些相对复杂的结构,使对ANSYS的操作更加娴熟,更好的投入实际应用。
二、设计的内容及要求
设计内容:
某高速公路隧道,采用矿山法施工,隧道V级围岩中。
其围岩埋深为21.173m,隧道内断面轮廓如下图,采用C30混凝土,厚度为50cm。
做出内力图,列出各单元内力值。
《二衬荷载按照计算荷载的30%计算,并保留三位小数》
操作步骤:
1.1指定工作文件名。
执行“开始→程序→ANSYS→ANSYSProductLauncher”菜单命令创建JobName为MechanicalanalysisonpermanentliningoftunnelinExpress-way
1.2定义分析标题
执行“UtilityMenu→File→ChangeTitle”菜单命令,在对话框中输入“MechanicalanalysisonpermanentliningoftunnelinExpress-way”
MainMenu→preferencers在弹出的菜单选择structural.
1.3定义单元类型
执行“MainMenu→Preprocess→ElementType→Add/Edit/Delete”然后执行:
add→beam→2Delastic3→OK;再Add→COMBIN→Spring-damper14→OK关闭窗口。
1.4定义单元实常数
执行MainMenu→Preprocessor→RealConstants→Add/Edit/Delete→add→ok→Type1BEAM3→OK→RealConstantSetNo.栏中输入1,在AREA栏输入0.5→在IZZ(惯性矩)栏输入0.5*0.5*0.5*/12→HEIGHT(高度)栏输入0.5→Apply;同理定义弹簧实常数k,100e6。
1.5定义材料属性
1、执行:
MainMenu→Preprocessor→Materialprops→MaterialModels→Structural→Linear→Elastic→Isotropic→在弹性模量EX栏输入30e9→在PRXY栏输入0.2→OK,再点击Density,DENS栏输入2500→执行“Meterial→NewModle”,单击OK,双击Isotropic,在EX栏填写1E9,在PRXY栏填写0.35,单击OK,双击Density,在DENS栏填写1800,单击OK,关闭对话框;
1.6定义截面属性
MainMenu→Preprocessor→sections→Beam→Commonsections→B中输入,1→在H中输入0.5→ok
1.7建立几何模型
⑴执行:
MainMenu→preprocessor→Modeling→Create→Keypoints→inactiveCS→依次输入坐标点1(0,0)点击Apply,如此依次输入,2(-3.34,0),3(3.34,0),4(0,11.37),点击OK。
⑵执行命令circle,1,5.65
circle,2,2.52circle,3,2.52circle,4,14.25circle,1,6.65circle,2,3.52circle,3,3.52circle,4,15.25生成八个圆。
⑶执行Modeling→operate→booleans→overlay然后根据需要两根线搭接生成关键点。
⑷执行Modeling→delete→linesonly选择不需要的线点击Apply→OK.
⑸执行PlotCtrls→Symbols→LDIRLine将off打√变为on→OK.
⑹执行Modeling→move/modify→reverseNormols→oflines→on打√变为yes→OK.
1.8划分单元
GUI执行:
MainCMenu→preprocessor→Meshing→Meshtool→ElementAttributes选择lines→set→选择L1、L2、L6、L10、L9、L11、L12、L8的8段→Apply→OK;SizeControls→lines→set→选择L3、L4、L1、L2的4段→Apply在NDIV输入16→OK;同理分别选择L5、L6、L7、L8、L10、L14、L12、L16→输入2;L9、L11、L13、L15→输入10;点击OK,点击Mesh,点击PickAll.
1.9生成弹簧
执行:
PlotCtrls→Numbering→勾选Nodenumber为on
执行:
MainMenu→Preprocessor→Modeling→Creat→Eelement→ElemAttributes→选择所有都为第二项→OK。
执行:
MainMenu→Preprocessor→Modeling→Creat→Eelement→AutoNumbered→thruNodes→然后相应节点相连接,即生成弹簧单元。
执行Meshing→clear→选中外面的线→点击OK。
执行Modeling→delete→linesonly选择不需要的线点击Apply→OK.
2.0加约束,荷载
(1)执行:
Main→Menu→solution→DefineLoads→Apply→Structural→Displacement→onnodes→在弹簧末端施加UX、UY方向约束;
(2)执行
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(3)自重荷载Main→Menu→solution→DefineLoads→Apply→Structural→Inertia→Gravity→Global→ACELY栏中输入10→OK
2.1求解
GUI执行:
Main→Menu→solution→solve→currentLS→ok,得到一个计算结果。
2.2计算变形图。
执行:
selectentities选择Elements和Reselect,选择衬砌。
单击OK。
执行;Plotctrls→style→sizeandshape→Displayofelement→勾选为On
执行:
Main→Menu→Geaneralpostproc→Plotresult→Deformedshape→得出变形图。
执行:
File→ReportGenerator-Append,生成一个抓图工具,抓取变形图。
2.3定义轴力、剪力、弯矩
GUI执行:
Main→Menu→Geaneralpostproc→Elementtable→Dfinetable→add→Bysequencenum→定义轴力在lab栏中输入→IN→SMISC,1→Apply;在lab栏中输入→IN→SMISC,7→Apply;同理定义剪力IQ、JQ,分别对应SMISC,2、SMISC,8;同理定义弯矩IM、JM,分别对应SMISC,6、SMISC,12。
2.4分别绘制出轴力、剪力、弯矩图
(1)执行:
Main→Menu→Geaneralpostproc→PlotResults→contorplot→lineelemres→LabI选择1,LabJ选择7→OK得出了轴力图。
(2)执行:
Main→Menu→Geaneralpostproc→PlotResults→contorplot→lineelemres→LabI选择2,LabJ选择8→OK得出了剪力图。
(3)执行:
Main→Menu→Geaneralpostproc→PlotResults→contorplot→lineelemres→LabI选择6,LabJ选择12,Fact栏中输入-1→OK得出了弯矩图。
若受力图不对,则可能是因为上部弹簧受拉造成。
则执行命令nropt,full,,
allsel
outres,all,all
再执行:
solution→loadstepopts→other→Dirth&death→kirlelement选择上面相对称的弹簧→OK。
再执行上面操作查看内力图,直到满足要求为止。
得到图形如下:
受力图:
变形图:
轴力图:
剪力图:
弯矩图:
再执行列表显示单元的轴力、剪力、弯矩:
执行“MainMenu→GeneralPostproc→ListResults→ElemTableData”,在对话框中选择IN、JN、IQ、JQ、IM、JM,单击OK,即得各个单元轴力、剪力、弯矩,见后附表
PRINTELEMENTTABLEITEMSPERELEMENT
*****POST1ELEMENTTABLELISTING*****
STATPREVIOUSPREVIOUSPREVIOUSPREVIOUSPREVIOUSPREVIOUS
ELEMINJNIQJQIMJM
1-0.34069E+06-0.33376E+069648.69308.67533.62278.1
2-0.32359E+06-0.31673E+06-943.05-1960.02278.13082.9
3-0.29772E+06-0.29100E+06-5066.2-6750.33082.96358.8
4-0.26319E+06-0.25666E+06-4940.1-7275.06358.89745.3
5-0.22068E+06-0.21441E+06-2457.5-5420.89745.311929.
6-0.17137E+06-0.16542E+06962.90-2600.211929.12383.
7-0.11685E+06-0.11128E+064375.3246.6212383.11102.
8-59036.-53900.7229.62575.211102.8383.8
9-39.5894614.99269.34133.98383.84668.0
1057926.62055.10433.4866.04668.0426.65
110.11265E+060.11622E+0610774.4829.4426.65-3899.2
120.16203E+060.16499E+0610405.4139.6-3899.2-7931.4
130.20414E+060.20648E+069458.42932.7-7931.4-11367.
140.23735E+060.23903E+068068.71345.6-11367.-13977.
150.26035E+060.26137E+066362.5-493.28-13977.-15604.
160.27226E+060.27260E+064457.6-2464.9-15604.-16156.
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210.16499E+060.16203E+06-4139.6-10405.-7931.4-3899.2
220.11622E+060.11265E+06-4829.4-10774.-3899.2426.65
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244614.9-39.590-4133.9-9269.34668.08383.8
25-53900.-59036.-2575.2-7229.68383.811102.
26-0.11128E+06-0.11685E+06-246.62-4375.311102.12383.
27-0.16542E+06-0.17137E+062600.2-962.9012383.11929.
28-0.21441E+06-0.22068E+065420.82457.511929.9745.3
29-0.25666E+06-0.26319E+067275.04940.19745.36358.8
30-0.29100E+06-0.29772E+066750.35066.26358.83082.9
31-0.31673E+06-0.32359E+061960.0943.053082.92278.1
32-0.33376E+06-0.34069E+06-9308.6-9648.62278.17533.6
69-0.36463E+06-0.35656E+0662454.63876.67470.26030.
70-0.35117E+06-0.34298E+0627955.28432.26030.7533.6
71-0.34298E+06-0.35117E+06-28432.-27955.7533.626030.
72-0.35656E+06-0.36463E+06-63876.-62454.26030.67470.
73-0.38257E+06-0.38455E+0696649.0.10247E+0638327.-10609.
74-0.39728E+06-0.39905E+0647427.53309.-10609.-35367.
75-0.41015E+06-0.41172E+0613575.19515.-35367.-43499.
76-0.42121E+06-0.42258E+06-7160.6-1170.1-43499.-41452.
77-0.43057E+06-0.43173E+06-17811.-11777.-41452.-34180.
*****POST1ELEMENTTABLELISTING*****
STATPREVIOUSPREVIOUSPREVIOUSPREVIOUSPREVIOUSPREVIOUS
ELEMINJNIQJQIMJM
78-0.43833E+06-0.43928E+06-21374.-15304.-34180.-25166.
79-0.44455E+06-0.44529E+06-20381.-14281.-25166.-16647.
80-0.44926E+06-0.44979E+06-16724.-10602.-16647.-9931.0
81-0.45244E+06-0.45276E+06-11672.-5536.4-9931.0-5701.6
82-0.45416E+06-0.45427E+06-5997.9145.41-5701.6-4263.3
83-0.38438E+06-0.38943E+0631135.34916.67470.50804.
84-0.39682E+06-0.40102E+0622368.27079.50804.38327.
97-0.45427E+06-0.45416E+06-145.415997.9-4263.3-5701.6
98-0.45276E+06-0.45244E+065536.411672.-5701.6-9931.0
99-0.44979E+06-0.44926E+0610602.16724.-9931.0-16647.
100-0.44529E+06-0.44455E+0614281.20381.-16647.-25166.
101-0.43928E+06-0.43833E+0615304.21374.-25166.-34180.
102-0.43173E+06-0.43057E+0611777.17811.-34180.-41452.
103-0.42258E+06-0.42121E+061170.17160.6-41452.-43499.
104-0.41172E+06-0.41015E+06-19515.-13575.-43499.-35367.
105-0.39905E+06-0.39728E+06-53309.-47427.-35367.-10609.
106-0.38455E+06-0.38257E+06-0.10247E+06-96649.-10609.38327.
107-0.40102E+06-0.39682E+06-27079.-22368.38327.50804.
108-0.38943E+06-0.38438E+06-34916.-31135.508
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