Abstract: Some offshore and hydraulic structures have configurations as unifform vertical cylinders of equal section. The hydrodynamic forces acting on them during earthquakes must be rationally estimated in the anti-seismic design. Based on the strict potential theory, a series of tables is given in the paper, which can be used to simply estimate the hydrodynamic forces on large vertical cylinders with several commonly used sections rigidly or elastically vibrating during earthquakes. The tables and estimation procedure are of practical signficance to the engineerng design and the formulating of the rrelated regulations.

Key words: earthquakes, hydrodynamlc force, vibration, structure anti-seismic, design

摘要： 许多海洋工程结构物和水工建筑物具有等截面垂直柱体的外形。在抗震设计中,必须合理地估算它们在地震时振动所遭受的水动作用力。本文在严格的势流理论计算的基础上,归纳了一套表格。可用于简便地估算几类常见截面垂直柱体在地震作用下作刚性或弹性振动时的水动作用力。对工程设计或有关规范的制订有相当的实用意义。

关键词: 地震, 水动力, 振动, 结构抗震, 设计