工程硕士论文正文.doc

基于 ANSYS 的拱坝有限元仿真分析及其在病险水库除险加固中的应用重庆大学工程硕士学位论文学生姓名:李军指导教师:姚刚兼职导师:高强工程领域:水工结构重庆大学建筑与土木工程学院二O 一三年四月 Finite element simulation analysis of arch dam based on ANSYS a nd its application in the reinforcement of dangerous reservoir A Thesis Submitted to Chongqing University inP artial F ulfillment of the R equirement for the D egree of Master of Engineering By Li Jun Supervis ed by Yao Gang Pluralistic Supervis ed by Gao Qiang Specialty : hydro-structure College ofA rchitecture and C ivil E ngineering of Chongqing University , Chongqing , China April 20 13 重庆大学硕士学位论文中文摘要 I 摘要复杂的地形地貌和地质条件下拱坝有限元模型建立和非线性仿真分析是目前拱坝设计和分析中的重要研究课题。本文对拱坝的分析方法做了总结对比,研究了有限元分析中的可视化、参数化方法及它们实施技术,开发了基于 ANSYS 平台的拱坝有限元仿真分析系统,并结合实际工程对重庆市酉阳县境内胜利水库双曲拱坝进行了三维非线性有限元整体稳定仿真分析。首先,研究了有限元中的可视化理论、参数化技术和 ANSYS 软件的二次开发技术, 介绍了拱坝有限元可视化建模的参数化原理和实施技术,以 ANSYS 为平台, 利用 ANSYS 提供的 UIDL 、 APDL 等二次开发技术,开发了具有水工特色的拱坝仿真分析系统,利用它可较方便地对复杂地基上的拱坝进行有限元建模和仿真分析。然后,研究了有限元仿真分析的基本原理及其在 ANSYS 软件中的具体实现。阐述了三类非线性问题,讨论了弹塑性分析的基本方程和常用的强度准则,并较详细介绍了 ANSYS 中有限元仿真分析的基本过程。最后,对胜利水库双曲拱坝进行了有限元建模和三维非线性有限元仿真分析, 计算分析了各种情况下坝体和基岩的应力位移规律,对大坝的整体安全度进行了综合评判。关键词: 拱坝,有限元,仿真分析, ANSYS ,除险加固重庆大学硕士学位论文英文摘要 II ABSTRACT The modeling and nonlinear FEM simulation analysis for arch dam designs is an im p ortant topic, espec ially for those arch dams tobe built in loc ations p lex topographic and geological conditions. In this Paper , brief summary and contrast for the a nalyti c al methods of arch dam were c onducted , the visualization and p arameterization of FEM , and its implementation were investigated , and the system based on ANSYS , for the simulation FEM analysis of arch dam was developed. And 3-D nonlinear FEM simulation analysis was then carried out for ShengLi reservoir arch dam , which is located in Youyang County , Chongqing Provin ceof China . The visualization theory and parameterization technique for FEM , and secondary developing technique for ANSYS were studied. The p arameterization p rin cip le for FEM modeling of arch dam and the implementation technique