摘要
建立新的有限元分析方法,为准确合理地进行高面板堆石坝的坝坡稳定动力分析提供参考。基于应力水平的有限元计算结果,将大型有限元软件ADINA的应力变形计算功能与GEO-SLOPE软件的边坡稳定分析功能相结合,提出了高面板堆石坝坝坡稳定动力有限元分析方法,并利用该方法对紫坪铺水利枢纽工程面板堆石坝在"5·12"汶川大地震期间的大坝动力反应及坝坡稳定进行了三维有限元模拟分析,得出坝体位移的动力分析计算结果与该坝震后位移实际观测结果基本吻合,坝坡动力稳定的分析计算结果与震后实际调查分析结果基本一致。所提出的高面板堆石坝坝坡稳定动力有限元分析方法是合理的,所获得的分析计算结果准确可信。
The new method of finite element analysis is established to provide reference for the accurate and reasonable dynamic analysis on stability of the high CFRD slope. Based on the conclusion of the finite element calculation with stress, the function of the large-scaled ADINA software for calculation of the stress deformation is combined with the function of the GEO-SLOPE software for analysis of slope stability. Then, the dynamic finite element method for analysis of the stability of high CFRD slope is raised. Furthermore, this method is applied for the 3D-finite-element simulation analysis of the dynamic reaction and slope stability of the CFRD of Zipingpu Hydropower Station during the earthquake occurred in Wenchuan on May 12, 2008. The dam displacement calculated by the dynamic analysis is in compliance with the displacement of the dam measured after the earthquake. Both the calculation by the dynamic analysis and the actually measured result are the same. Therefore, the dynamic finite element method for analysis of the stability of high CFRD slope is reasonable. The analysis and calculation conclusions are accurate and believable.
出处
《西北水电》
2013年第6期10-15,共6页
Northwest Hydropower
基金
国家自然科学基金项目(50779051)
