| 基于黏弹性人工边界的高拱坝气幕隔震效果 |
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| 引用本文： | 张少杰,陈 江,张元泽,刘浩吾.基于黏弹性人工边界的高拱坝气幕隔震效果[J].水利学报,2011,42(2). |
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| 作者姓名： | 张少杰 陈 江 张元泽 刘浩吾 |
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| 作者单位： | 1. 四川大学水利水电学院,四川成都,610065
2. 中国水电顾问集团昆明勘测设计研究院科学研究分院,云南昆明,650033 |
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| 基金项目： | 国家自然科学基金重大研究计划资助项目(90715026) |
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| 摘 要： | 摘要：基于气-液-固三相耦合理论模型，采用动力有限元时程分析的数值仿真方法，对锦屏一级拱坝进行了气幕
隔震效果的三维数值模拟。引入黏弹性人工边界的基本原理，在坝基截断边界添加弹簧-阻尼单元以考虑无限地
基的辐射阻尼影响。数值仿真结果表明：气幕显著降低了上游坝面的动水压力，气幕厚度越大，隔震效果越好。
与无气幕时相比，气幕厚度为1、2和3m时，动水压力分别降低了58.2%、71.5%和81.9%，位移及应力反应也相
应降低。
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| 关 键 词： | 动水压力 气幕隔震 辐射阻尼 高拱坝 流固耦合 |
Isolation effect of air-cushion in high arch dams considering viscous-spring artificial boundary condition |
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| ZHANG Shao-jie,CHEN Jiang,ZHANG Yuan-ze and LIU Hao-wu.Isolation effect of air-cushion in high arch dams considering viscous-spring artificial boundary condition[J].Journal of Hydraulic Engineering,2011,42(2). |
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| Authors: | ZHANG Shao-jie CHEN Jiang ZHANG Yuan-ze and LIU Hao-wu |
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| Affiliation: | ZHANG Shao-jie1,CHEN Jiang2,ZHANG Yuan-ze1,LIU Hao-wu1(1.Sichuan University,Chengdu 610065,China,2.Scientific Research Institute of Kunming Investigation and Design Institute,Kunming 650033,China) |
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| Abstract: | Based on the theoretical model of gas-liquid-solid the 3D numerical simulation for the Jinping Arch Dam was carried out to discuss the effects of air-cushion isolation by using the dynamic finite element analysis.Based on the basic theory of viscous-spring artificial boundary condition,spring-damping elements were added to truncated boundary of dam foundation to consider the influence of radiation damping.Numerical simulation results show that the air-cushion reduces the hydrodynamic pressure significantly.... |
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| Keywords: | hydrodynamic pressure air-cushion isolation radiation damping high arch dam fluid-solid coupling |
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