董箐混凝土面板堆石坝地震响应特性研究
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摘要
针对董箐混凝土面板堆石坝的抗震安全性要求,采用三维非线性动力有限元方法,考虑堆石料的动力非线性及地震时坝体动水压力作用,采用等效线性模型求解坝体的地震反应,获得了该坝在EI-Centro地震波作用下及峰值加速度时坝体和面板的加速度反应、位移反应、应力反应、垂直缝与周边缝位移反应及坝体地震残余变形等地震动力反应特性,揭示了董箐面板堆石坝的地震反应规律与特点,分析了坝体的抗震安全性,论证了设计方案的合理性。
In view of seismic safety requirements of Dongqing concrete facing rock-fill dam,3D dynamic nonlinear FEM is applied to study the seismic response behavior of Donqing concrete facing rock-fill dam.The non-linear dynamic properties of rockfill materials and the interaction of water and dam under earthquake are considered.The equivalent linear method is used to solve the problem of seismic response of concrete facing rock-fill dam.The dynamic response properties of the dam are obtained in the conditions of EI-Centro seismic wave and peak acceleration of input earthquake curve,such as acceleration response,displacement response and stresses response of rock-fill dam body and its concrete face,displacement response of its peripheral joints and slab joints,and earthquake-induced permanent deformation of the dam.The general law and characteristics of seismic response is put forward for Dongqing concrete facing rock-fill dam.The anti-seismic safety of the dam body is analyzed.The conclusion of the design scheme is proved to be reasonable.
In view of seismic safety requirements of Dongqing concrete facing rock-fill dam,3D dynamic nonlinear FEM is applied to study the seismic response behavior of Donqing concrete facing rock-fill dam.The non-linear dynamic properties of rockfill materials and the interaction of water and dam under earthquake are considered.The equivalent linear method is used to solve the problem of seismic response of concrete facing rock-fill dam.The dynamic response properties of the dam are obtained in the conditions of EI-Centro seismic wave and peak acceleration of input earthquake curve,such as acceleration response,displacement response and stresses response of rock-fill dam body and its concrete face,displacement response of its peripheral joints and slab joints,and earthquake-induced permanent deformation of the dam.The general law and characteristics of seismic response is put forward for Dongqing concrete facing rock-fill dam.The anti-seismic safety of the dam body is analyzed.The conclusion of the design scheme is proved to be reasonable.
引文
[1]顾淦臣,沈长松,岑威钧.土石坝地震工程学[M].北京:中国水利水电出版社,2009.
[2]徐志英,沈珠江.高尾矿坝的静、动应力非线性分析与地震稳定性[J].华东水利学院学报,1980(4):59-75.
[3]沈振中,迟世春,陈剑.混凝土面板堆石坝高趾墙动力性态计算研究[J].水电能源科学,2005,23(1):73-76.
[4]迟世春,顾淦臣.混凝土面板堆石坝的抗震稳定分析[J].东北水利水电,1995(11):3-5,9.
[5]吕生玺,沈振中,温续余.九甸峡混凝土面板堆石坝地震反应特性研究[J].中国农村水利水电,2008(2):88-91.
[6]严祖文,李敬梅,冯艺.地震作用下坝基土体液化判别及动力有限元分析[J].中国农村水利水电,2006(10):78-81.
[7]朱亚林,孔宪京,丁克伟,等.高土石坝的抗震研究进展[J].安徽建筑工业学院院报(自然科学版),2009,17(3):1-5,10.
[8]郦能惠.高混凝土面板堆石坝新技术[M].北京:中国水利水电出版社,2007.
[2]徐志英,沈珠江.高尾矿坝的静、动应力非线性分析与地震稳定性[J].华东水利学院学报,1980(4):59-75.
[3]沈振中,迟世春,陈剑.混凝土面板堆石坝高趾墙动力性态计算研究[J].水电能源科学,2005,23(1):73-76.
[4]迟世春,顾淦臣.混凝土面板堆石坝的抗震稳定分析[J].东北水利水电,1995(11):3-5,9.
[5]吕生玺,沈振中,温续余.九甸峡混凝土面板堆石坝地震反应特性研究[J].中国农村水利水电,2008(2):88-91.
[6]严祖文,李敬梅,冯艺.地震作用下坝基土体液化判别及动力有限元分析[J].中国农村水利水电,2006(10):78-81.
[7]朱亚林,孔宪京,丁克伟,等.高土石坝的抗震研究进展[J].安徽建筑工业学院院报(自然科学版),2009,17(3):1-5,10.
[8]郦能惠.高混凝土面板堆石坝新技术[M].北京:中国水利水电出版社,2007.
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