Stability calculation of diversion tunnel plug considering interface damage and continuous crack

Yang Yang

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Stability calculation of diversion tunnel plug considering interface damage and continuous crack

更新时间：2023-11-14

- Stability calculation of diversion tunnel plug considering interface damage and continuous crack
- Advanced Engineering Sciences Vol. 43, Issue Z1, Pages: 86-91(2011)
- 作者机构：
  
  武汉大学水利水电学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011，
  
  Published Online：31 March 2011，
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杨阳,肖明.考虑接触面损伤及连续脱开的堵头稳定计算[J].工程科学与技术,2011,43(Z1):86-91.

Yang Yang. Stability calculation of diversion tunnel plug considering interface damage and continuous crack. [J]. Advanced Engineering Sciences 43(Z1):86-91(2011)
杨阳,肖明.考虑接触面损伤及连续脱开的堵头稳定计算[J].工程科学与技术,2011,43(Z1):86-91. DOI：

Yang Yang. Stability calculation of diversion tunnel plug considering interface damage and continuous crack. [J]. Advanced Engineering Sciences 43(Z1):86-91(2011) DOI：

摘要

中文摘要: 基于三维弹塑性损伤有限元，提出了在高内水压下，考虑接触面损伤及连续脱开的堵头稳定计算方法。在堵头潜在滑动面上模拟接触面单元，以接触面单元为基础，计算高水头作用下堵头接触面单元损伤程度。在损伤严重部位将会发生接触脱离，对于与内水接触的脱离部位，内水将入侵其中，从而导致接触面持续脱开。最终得到堵头抗滑过程中，堵头与外部接触的有效作用面及接触面单元损伤程度，按损伤程度对接触面单元的凝聚力进行一定程度的折减，从而计算出堵头的整体安全系数，为工程实践提供较准确的理论依据。将此算法应用于毛儿盖导流洞堵头稳定校核中，取得了良好的效果，说明了考虑接触面损伤及连续脱开的有限元计算堵头稳定方法是合理而有效的。

Abstract

Abstract:Based on three-dimensional elastoplastic finite element theory

a computational method considering interface damage and continuous crack under high pressure is introduced. Interface elements are modeled on potential sliding surface of diversion tunnel plug

then research the damage degree of interface element on the condition of water pressure. The interface will disengage at serious damage section. Internal water will enter the disengaged interface contacts to it

which may causes continuous crack of interface elements. In the end

effective action surface between diversion tunnel plug and externality and the damage degree of interface can be obtained. The cohesion of interface elements is reduced based on the degree of damage. Then the safety factor of diversion tunnel plug can be calculated. This method is used to calculate the stability of diversion tunnel plug at Mao’ergai hydropower station and has gained a good effect

which indicates that the proposed method is effective and reliable.

关键词

有限单元法堵头稳定分析接触面损伤安全系数

Keywords

finite element methodplugstability analysisinterfacedamagesecurity coefficient

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