高拱坝泄洪振动水弹性模型研究  

Research on Flood relief Induced Vibrating of High Arch Dam by Hydroelastic Model

作　　者：吴杰芳[1] 余岭[1] 陈敏中[1] 曹晓丽[1] 张晓平[1] 

机构地区：[1]长江科学院爆破与振动研究所

出　　处：《长江科学院院报》1999年第5期40-44,52,共6页Journal of Changjiang River Scientific Research Institute

摘　　要：以构皮滩双曲拱坝为对象，采用水弹性模型研究坝身集中泄洪、水垫塘消能所诱发的坝体振动及其影响。采用加重橡胶材料，建立了１／１５０ 的水力学和结构动力学协调相似的水弹性模型，完善了对库水、地基、坝体、水流脉动荷载相互作用的模拟。试验中采用了先进的测试手段和数据分析处理软件包，对该模型的模态和多种泄洪工况下坝体的振动响应和脉动压力进行了系统的测试和分析。Taking Goupitan domed dam as a studying object,the dam vibration induced by concentratedly releasing flood discharge through dam body and energy dissipation in a water cushion pool and their effects were studied by a hydroelastic model.The hydroelastic model made of weighted rubber,with a scale 1∶150,can reflect the coordinated similitude of hydraulics and structural mechanics,and it has provided the similarity of interactions generated from reservoir water,foundation,dam body and flow fluctuating load.Some advanced test equipments,techniques and data processing saftware were used .The systematic tests and analyses of the dam vibrating responses and fluctuating pressures under varieties of working conditions were performed,and influences of flood releasing on induced vibration are assessed by using the model test results.

关 键 词：高拱坝 泄洪 水弹性模型 流激振动 

分 类 号：TV131.61[水利工程—水力学及河流动力学]