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本文首先根据大量的由实际地震记录得到的摇摆功率谱曲线的统计分析,提出了实用,合理的摇摆功率谱的数学模型,给出了不同场地上的谱参数的统计值。然后,建立了在水平与摇摆地震动联合作用下高层与高耸结构的振动方程,给出了计算结构均方反应及结构可靠度的公式。最后,通过数值计算,得到了一些对实际工程有意义的结果。
Firstly, based on the statistical analysis of a large number of swing power spectrum curves obtained from actual seismic records, this paper presents a practical and reasonable mathematical model of the swing power spectrum, and gives statistical values of spectral parameters on different sites. Then, the vibration equations of high-rise and high-rise structures under the joint action of horizontal and oscillating ground motions are established, and the formulas for calculating the structural mean square response and structural reliability are given. Finally, through numerical calculations, some meaningful results for practical engineering were obtained.