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复杂地形条件下高面板堆石坝应力变形特性研究

杨杰, 李国英, 沈婷

杨杰, 李国英, 沈婷. 复杂地形条件下高面板堆石坝应力变形特性研究[J]. 岩土工程学报, 2014, 36(4): 775-781. DOI: 10.11779/CJGE201404025
引用本文: 杨杰, 李国英, 沈婷. 复杂地形条件下高面板堆石坝应力变形特性研究[J]. 岩土工程学报, 2014, 36(4): 775-781. DOI: 10.11779/CJGE201404025
YANG Jie, LI Guo-ying, SHEN Ting. Stress-deformation properties of super-high CFRDs under complex terrain conditions[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(4): 775-781. DOI: 10.11779/CJGE201404025
Citation: YANG Jie, LI Guo-ying, SHEN Ting. Stress-deformation properties of super-high CFRDs under complex terrain conditions[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(4): 775-781. DOI: 10.11779/CJGE201404025

复杂地形条件下高面板堆石坝应力变形特性研究  English Version

基金项目: 水文水资源与水利工程科学国家重点实验室基本科研业务费专项资金项目(10Y312011)
详细信息
    作者简介:

    杨 杰(1986- ),男,博士研究生,主要从事岩土工程数值模拟分析研究。E-mail: yuzhou-x@163.com。

  • 中图分类号: TV641;TU431

Stress-deformation properties of super-high CFRDs under complex terrain conditions

  • 摘要: 河谷地形是影响面板堆石坝应力变形的重要因素之一,河谷地形不同导致面板坝边界条件不同,进而影响其应力变形状态。对某拟建坝高256 m的超高混凝土面板堆石坝在复杂地形条件下的应力变形进行分析,得出不对称不规则河谷对面板堆石坝的应力变形协调性影响较大,特别是右岸古河床阶地附近的坝体和面板应力变形梯度变化较大,不利于面板的安全,设计和施工时需采取措施进行处理。并通过与两种调整方案的结果进行对比,针对性的分析了右岸古河床阶地的影响。同时左岸陡岸坡导致面板拉应力和周边缝位移较大,通过与3种调整方案的结果进行对比,分析了陡岸坡的影响程度。
    Abstract: Valley terrain is one of the most important factors which affect the stress and deformation of CFRDs. Different valley terrains lead to different boundary conditions of CFRDs and further influence the state of stress and deformation. 3D-FEM is employed to analyze the stress and deformation of a super-high CFRD 256 m in height under complex topography. It is indicated that the asymmetric and irregular river valley has large influence on the stress and deformation coordination of CFRD, especially the change of stress and deformation gradient is larger near the ancient river terraces at the right bank, which is harmful to the safety of the concrete slab, and thus it is necessary to take measures during design and construction. By comparing the results of two adjustment schemes, the influence of the ancient riverbed on the right bank is analyzed. At the same time, the steep slope at the left bank causes the tensile stress of panel and large displacement of peripheral joints. Based on the results of three adjustment schemes, the influence degree of the steep bank slope is analyzed.
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  • 收稿日期:  2013-07-21
  • 发布日期:  2014-04-21

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