| 坝料流变对高面板堆石坝的应力变形影响研究 |
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| 引用本文： | 潘家军,饶锡保,徐晗,陈云.坝料流变对高面板堆石坝的应力变形影响研究[J].西北地震学报,2011,33(Z1). |
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| 作者姓名： | 潘家军 饶锡保 徐晗 陈云 |
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| 作者单位： | 长江科学院水利部岩土力学与工程重点实验室,湖北武汉,430010 |
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| 基金项目： | 国家十一五科技支撑课题(2008BAB29B02); 长江科学院中央级基本科研业务费(CKSF2010016) |
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| 摘 要： | 在高应力状态下坝料的流变较为明显。为研究坝料流变对混凝土面板坝应力变形的影响,采用长科院九参数幂级数流变模型及其试验参数,对某高混凝土面板堆石坝进行应力、变形分析。结果表明,坝料流变使坝体变形明显增加,坝体应力有所减小。考虑坝料的流变特性后的面板法向位移(挠度)明显增加,面板坝轴向和顺坡向应力极值增加。对于分期浇筑面板和分期蓄水的高混凝土面板堆石坝,选用合适的流变本构模型正确地模拟堆石体的流变特性,可以为大坝填筑进度及面板分期浇筑时间的确定提供参考,并有助于正确地预测大坝的应力变形。
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| 关 键 词： | 面板堆石坝 流变 应力变形 九参数幂级数本构模型 |
Effect of Rockfill Creep to Stress and Displacement in High CFRD |
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| PAN Jia-jun,RAO Xi-bao,XU Han,CHEN Yun.Effect of Rockfill Creep to Stress and Displacement in High CFRD[J].Northwestern Seismological Journal,2011,33(Z1). |
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| Authors: | PAN Jia-jun RAO Xi-bao XU Han CHEN Yun |
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| Institution: | PAN Jia-jun,RAO Xi-bao,XU Han,CHEN Yun(Changjiang River Scientific Research Institute,Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources,Wuhan 430010,China) |
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| Abstract: | Rockfill Creep is obvious in high stress state.In order to study the effect of rockfill creep to stress and displacement in high concrete face rockfill dam(CFRD),using the nine parameter power series constitutive model and its test parameters, the stress and deformation simulation analysis rockfill creep for a example of CFRD are performed.The results show that the deformation of dam evidently increases and stress relax a little.The creep of the rockfill result to some increase of the normal direction defor... |
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| Keywords: | Concrete face rockfill dam(CFRD) Creep Stress and displcement Nine parameter power series constitutive model |
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