| 应力路径对堆石体变形的影响 |
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| 引用本文： | 李金凤,杨启贵,徐卫亚.应力路径对堆石体变形的影响[J].岩土力学,2007,28(Z1):619-622. |
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| 作者姓名： | 李金凤 杨启贵 徐卫亚 |
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| 作者单位： | 1. 河海大学 岩土所，南京 210098；2. 长江水利委员会设计院，武汉 430010 |
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| 基金项目： | 国家自然科学基金（No. 50679004） |
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| 摘 要： | 通过改变填筑程序，对一200 m级高面板堆石坝工程实例进行了应力-应变仿真模拟，分析表明：采用邓肯E-B非线性弹性模型和中点增量法，可以合理地反映出施工加载过程对坝体变形和结构性态的影响；堆石体的变形与加载的方式有关，相同的应力水平、不同的应力路径，其变形是不同的；对需分期填筑的高面板堆石坝，优选填筑次序对控制坝体变形有明显的作用。结果对工程建设有实际意义。
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| 关 键 词： | 应力路径 应力变形 面板堆石坝 堆石体 |
| 收稿时间： | 2007-04-22 |
Influence of stress paths on rockfill’s deformation characteristics |
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| LI Jin-feng,YANG Qi-gui,XU Wei-ya.Influence of stress paths on rockfill’s deformation characteristics[J].Rock and Soil Mechanics,2007,28(Z1):619-622. |
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| Authors: | LI Jin-feng YANG Qi-gui XU Wei-ya |
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| Institution: | 1. Research Insitute of Geotechnical Engineering, Hohai University, Nanjing 210098,China; 2.Changjiang Institute of Survey, Planning, Design and Research, Changjiang Water Resources Commission, Wuhan 430010, China |
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| Abstract: | In this paper,the analog simulation on the stress-deformation characteristic of one high concrete face rockfill dam is carried out. The conclusion obtained from the finite element analysis shows that the great influence of stress paths on rockfill’s deformation characteristics is reflected by Duncan E-B model and mid-point incremental method. The rockfill’s deformation is related to load mode, and same stress level and different stress path, rockfill’s deformation is different; optimized load path is important to control rockfill’s deformation for stage filling rockfill dam. |
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| Keywords: | stress path method stress deformation concrete slab rockfill slab rockfill |
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