【摘要】 原型振动试验是研究大坝动力特性的重要手段,原型试验与模型试验、数值分析手段相结合,对深入研究坝体的动力特性至为重要。本文在收集国内外混凝土拱坝原型振动试验资料的基础上,对其中一些规律性的问题,如拱坝的自振特性及其影响因素、拱坝的阻尼、库水可压缩性的影响等进行了简单评述。更多还原

【Abstract】 Field test is an important way to investigate the dynamic characteristics of large dams.It is necessary to combine the field test,the model test and the numerical computation in the investigation of dynamic characteristics of arch dams.On the basis of gathering field test data at home and abroad,this paper summarizes some of the regularities such as the self-vibration characteristics of arch dam and its contributing factors,the damping ratio and its relation with dynamic reaction intensity,and the infection of water compressibility.更多还原