波动输入方法及其在水闸工程中的应用  

Application of Seismic Motion Input Method in Sluice Projects

作　　者：杨启龙[1] 白莉萍 耿亮 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]徐州市水利建筑设计研究院,江苏徐州221002

出　　处：《华东交通大学学报》2014年第1期130-134,共5页Journal of East China Jiaotong University

基　　金：四川省科技计划项目(2013GZ0032)

摘　　要：目前在对软土地基上的闸涵类水工结构进行动力分析时大多采用无质量地基模型,针对其无法有效考虑地基辐射阻尼效应这一问题,基于ADINA软件平台和动力黏弹性边界理论,成功实现了弹簧阻尼元件在模型截断边界的施加与外源波动在边界的正确输入。同时,将上述方法应用到基于国内某水闸闸室-水体-地基系统的地震动反应分析当中,并与传统无质量地基模型的计算结果进行对比。计算结果表明,考虑地基辐射阻尼后闸室主体结构的地震动响应有所减小,且该方法在计算中具有较好的精度和稳定性。The massless foundation model is usually used in most dynamic analyses of lock and culvert on soft foundation,but the effect of radiation damping of foundation is often neglected. On account of this problem, spring-damping element and seismic wave are applied on the boundary of the model with the finite program ADINA and viscous-spring boundary method. Meanwhile,the above method is adopted in seismic response analysis of a sluice-water-foundation system in our country. The results are compared to those of the traditional massless foundation model. It is found that the radiation damping of foundation can reduce dynamic response of sluice chamber effectively and the proposed method is proved precise and stable in calculating.

关 键 词：地基辐射阻尼 黏弹性边界 波动输入 流固耦合 闸室 ADINA 

分 类 号：TV312[水利工程—水工结构工程]