双江口心墙堆石坝振动台模型试验研究
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摘要
通过振动台模型试验,得到了双江口心墙堆石坝的自振频率、阻尼比和振型等动力特性参数,研究了坝体地震加速度反应和残余变形等分布规律,这些成果可供大坝抗震设计参考使用,对其他工程亦有一定的参考价值,也是验证和改进地震动力反应方法和计算程序的基本资料。本文详细介绍振动台模型试验概况,包括模型设计、模型制作、加速度传感器埋设、表面位移测点布置和试验方案等情况。
The dynamic behavior and seismic response of Shuangjiangkou core rock-fill dam were studied by shaking table model tests,and various dynamic parameters,natural frequency,damping ratio,vibration mode of model dam,etc.obtained.The space distributions of seismic acceleration and residual deformation were studied.Thess results are useful for the seismic design of dam,and the experimental data are valuable for the verification and improvement of the numerical methods and simulation models of seismic dynamic response. This paper gives a general introduction of the tests,including model design and construction,testing schemes as well as arrangement of acceleration sensors and surface-displacement sampling points.
The dynamic behavior and seismic response of Shuangjiangkou core rock-fill dam were studied by shaking table model tests,and various dynamic parameters,natural frequency,damping ratio,vibration mode of model dam,etc.obtained.The space distributions of seismic acceleration and residual deformation were studied.Thess results are useful for the seismic design of dam,and the experimental data are valuable for the verification and improvement of the numerical methods and simulation models of seismic dynamic response. This paper gives a general introduction of the tests,including model design and construction,testing schemes as well as arrangement of acceleration sensors and surface-displacement sampling points.
引文
[1]刘小生,刘启旺.双江口大坝振动台模型试验研究报告[R].北京:中国水利水电科学研究院,2009.LIU Xiaosheng,LIU Qiwang.Shaking table tests of Shuangjiangkou dam[R].Beijing:China Institute of Water Resources and HydropowerResearch,2009.(in Chinese).
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[2]SL237-1999.土工试验规程[S].SL237-1999 specification of soil test[S].(in Chinese)
[3]刘启旺,刘小生.面板坝模型砂砾料低应力状态下的静、动力特性研究[R].“九五”国家科技攻关“面板坝大型振动台模型试验研究”(96-221-02-03-01)研究报告之一,北京:中国水利水电科学研究院,1998.LIU Qiwang,LIU Xiaosheng.Study on static and dynamic properties of CFRD model gravel under low stress state[R].One of the reports ofThe State Ninth-Five Science and Technology Plan(96-221-02-03-01).Beijing:China Institute of Wate Resources and HydropowerResearch,1998.(in Chinese)
[4]王昆耀.黑泉水库混凝土面板堆石坝坝体及坝基土料动力特性试验研究[R].“九五”国家科技攻关“面板坝大型振动台模型试验研究”(96-221-02-03-01)研究报告之一,北京:中国水利水电科学研究院,1998.Wang Kunyao.The soil dynamic characteristics of the embankment and dam foundation of the Heiquan CFRD project[R].One of the reportsof The State Ninth-Five Science and Technology Plan(96-221-02-03-01).Beijing:China Institute of Water Resources and HydropowerResearch,1998.(in Chinese).
[5]刘小生,王钟宁,汪小刚,等.面板坝大型振动台模型试验与动力分析[M].北京:中国水利水电出版社,2005.LIU Xiaosheng,WANG Zhongning,WANG Xiaogang,et al.Large scale table model and dynamic analysis of CFRD[M],2005.(inChinese).
[6]许德华,黄国伦,袁国庆,等.四川省大渡河双江口水电站可行性研究坝型选择专题报告[R].成都:中国水电顾问集团成都勘测设计研究院,2006.XU Dehua,HUANG Guolun,YUAN Guoqing,et al.The choice of dam type of feasibility research report of Shuangjiangkou hydropowerstation in Sichuan[R].Chendu:HydroChina Chengdu Engineering Coperation,2006.(in Chinese).
[7]顾淦臣.土石坝地震工程,河海大学出版社[M].南京:1989.GU Huanchen.Earthquake engineering of earth-rockfill dam[M].Nanjing:HEHAI University publishing house,1989.(in Chinese).
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