库底反射性边界条件与地震动水压力分析

被引:4
作者
王忠
晏启祥
刘浩吾
机构
[1] 四川大学水电学院,四川大学水电学院,四川大学水电学院四川成都,四川成都,四川成都
关键词
动水压力; 刚性坝; 可压缩性; 反射系数;
D O I
10.15961/j.jsuese.2002.01.009
中图分类号
TV135 [工程水力学(水工建筑水力学)];
学科分类号
0801 ; 080103 ; 080104 ; 081502 ;
摘要
对目前通常所用的特殊库底反射性条件进行了推广 ,导出了库底存在淤积层时更一般的库底反射系数。利用试点法计算刚性坝面一般库底条件下坝面动水压力与地震干扰频率的关系 ,库底淤积层以及基岩材料性质对动水压力的影响。计算表明 ,考虑库底吸收后严格的库水共振现象不会发生 ,动水压力随淤积层的厚度增大而增大 ,软弱的基层能显著的降低动水压力。推广后的一般库底反射边界条件是有效的 ,可行的。
引用
收藏
页码:36 / 39
页数:4
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