ANSYS三维地应力场数值模拟方法应用研究

刘爱华; 杨清; 吴均平

ANSYS三维地应力场数值模拟方法应用研究

中南大学资源与安全工程学院, 长沙 410083

基金项目:

国家重点基础研究发展计划项目 2010CB732004

详细信息

作者简介:
刘爱华(1963-), 男, 博士, 教授, 从事矿山开采技术与安全管理领域的教学与研究。E-mail:alexliu@163.com

通讯作者:
杨清(1989-), 男, 中南大学硕士研究生, 专业方向地下矿山安全。E-mail:675032836@qq.com

中图分类号: TU459⁺.4
计量
- 文章访问数: 224
- HTML全文浏览量: 154
- PDF下载量: 25
- 被引次数: 0
出版历程
- 收稿日期: 2012-11-21
- 刊出日期: 2013-06-28

A PRACTICAL ANSYS 3-D NUMERICAL SIMULATION METHOD FOR IN-SITU STRESS FIELD

College of Resources and Safety Engineering, Central South University, Changsha 410083, China

摘要

摘要: 初始地应力场由自重应力场和构造应力场叠加而成，是深部地下工程分析必须考虑的重要因素。针对目前常用的三维地应力场数值模拟方法在维持地应力场分布规律和避免附加位移方面存在的缺陷，进行了ANSYS地应力场模拟方法的比较研究。用java语言编写了针对不同ANSYS版本的初始应力文件合并程序，提出了高版本ANSYS初始应力文件合并的EXCEL简易方法，实现了不需编写任何其他程序、对所有类型单元通用的ANSYS初始应力平衡等效节点反力法，构建了一套实用的ANSYS三维地应力场模拟方法流程。
- 初始地应力场 /
- ANSYS /
- 文件合并法 /
- 地应力平衡
Abstract: In-situ stress field, which is consist of self-weight stress field and tectonic stress field, is one of the most important factors in the deep underground engineering analysis. There are some defects in present commonly used three dimensional stress field simulation method, then it is not very well in maintaining ground stress field distribution rule and avoiding additional displacement. Firstly, two methods are evaluated and some Java programming is built based on the better one to create the initial stress file. And that can be done by a simple EXCEL method without programming when higher version ANSYS software is used. Then, a simple node reaction method is put forward to realize ground stress balance which means the displacement in the finite element model is zero. At last, all good methods in the process are integrated into a practical ANSYS 3-D numerical simulation method for in-situ stress field.
- in-situ stress field /
- ANSYS /
- file merge method /
- in-situ stress balance

HTML全文

图 1 地应力计算模型

Figure 1. In-situ stress calculation model

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图 2 三向荷载简支计算模型

Figure 2. Three-direction load-constraint calculation model

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图 3 三向荷载简支计算模型应力场

Figure 3. Stress distribution of three-direction load-constraint calculation model

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图 4 单方向地应力计算模型

Figure 4. Single-direction load-constraint calculation model

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图 5 合成初始应力文件的应力分布

Figure 5. Stress distribution of synthetic file

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图 6 初始应力荷载产生的附加位移

Figure 6. Additional displacements result of initial stress loads

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图 7 六面体单元和金字塔单元

Figure 7. Integration point locations for bricks and pyramids

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图 8 地应力平衡后的地应力和位移

Figure 8. In-situ stresses and displacements after stress balance

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图 9 ANSYS三维地应力场模拟流程

Figure 9. ANSYS three-dimensional in-situ stress field simulation process

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