沥青混凝土心墙坝三维静力分析与水力劈裂分析

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1、三峡大学硕士学位论文(4)TheoccurenceanddevelopmentofthecrackissimulatedbyusingVCCTinANSYS,andthenusinganexampleprovesthatthemethodisreliableandaccurate.Finally,theoccurenceanddevelopmentofthehydraulicfracturingissimulatedintheoverloadconditionbasedonthefracturemechanicstheoryan

2、dusingthefractureruleofstrainenergy.Keywords:asphaltconcretecore-walldam;Duncan-Changmodel;hydraulicfracturing;fracturemechanics;crackpropagationIV三峡大学硕士学位论文目录引言................................................................11绪论......................................

3、...........................21.1研究背景........................................................21.2沥青混凝土心墙坝静力分析研究现状................................31.3土石坝心墙水力劈裂的研究现状....................................31.4断裂力学在裂纹扩展问题上的应用现状..............................71.5本文主要研究内容.......

4、........................................92沥青混凝土坝静力数值分析研究...................................112.1静力分析计算原理...............................................112.2非线性邓肯张E-B模型在ANSYS上的实现...........................142.3石门大坝三维有限元静力分析.....................................192.4本章小

5、结......................................................353基于断裂力学理论的沥青混凝土心墙水力劈裂分析................373.1水工沥青混凝土材料特点.........................................373.2沥青混凝土材料断裂性能........................................373.3沥青混凝土心墙发生水力劈裂的前提条件...........................383.4基于断

6、裂力学的水力劈裂判定准则的建立...........................403.5石门大坝沥青混凝土心墙水力劈裂分析............................493.6本章小结......................................................584超载工况下沥青混凝土心墙水力劈裂扩展数值模拟................604.1基于VCCT的裂纹扩展模拟.......................................604.2VCCT裂纹扩展在

7、ANSYS中的实现..................................614.3石门超载情况下的水力劈裂探讨..................................664.4超载工况下裂纹发生发展过程的可视化模拟........................674.5本章小结......................................................705结论与展望....................................................

8、....715.1结论...........................................................715.2展望......................................................