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本文结合多泥沙河流上的水工建筑物,受其地震的影响,研究了异重流体作用下的地震动水压力。考虑具有铅在坝面的坝体在地震作用下,刚性地作垂直坝面方向的微幅简谐振动,在假定河床水平,流体不可压缩,并设流体密度沿深度按指数函数规律增加。此时可得到流体的运动方程是线性常系数的,利用分离变量法求得了动压分布的广义富氏级数解,对结果并作了定性分析。结论可供工程设计部门参考。
In this paper, the hydraulic structures on the sediment-rich rivers are affected by the earthquake. Considering that the dam with lead surface is under the action of earthquakes, it will rigidly perform micro-harmonic vibration in the direction of the vertical dam surface. Assuming the level of the river bed, the fluid is incompressible, and the fluid density increases exponentially along the depth. At this point, the equation of motion of the fluid can be obtained as a linear constant coefficient. The generalized Fourier series solution of the dynamic pressure distribution is obtained by the method of discrete variables, and the results are qualitatively analyzed. The conclusions can be referenced by the engineering design department.