【摘要】 结合实际工程给出了考虑库水可压缩性时高拱坝动力特性的数值求解方案。计算结果表明,库水的可压缩性对坝体的自振频率、振型参与系数和振型等动力特性均有较大的影响。考虑库水可压缩性之后,计算坝体动力特性时计算量略有增大,建议采用可压缩库水模型求解高拱坝的动力特性。更多还原

【Abstract】 Combining with engineering practice,the effects of water compressibility on dynamic characteristic of high arch dams are studied.The compressible reservoir models and the numerical schemes are given for the dynamic characteristic analysis of high arch dams.The results show that the dynamic characteristics,such as natural frequency,mode and mode shapes,obtained from different reservoir models are quite different due to the water compressibility. The compressible model is recommended for the dynamic characteristic analysis of high arch dams since the computational complexity is almost same with incompressible model.更多还原