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振型和频率仅与质量和刚度有关,由结构外形唯一确定,故称之为特征参量。振型为结构位移的完备正交基,基于振型加载模式的Pushover方法较其他方法更加合理。采用结构质量参与系数控制振型参与计算数量,振型数有了量化标准,使精度满足安全需要。最后通过实例阐述多模态自适应Pushover方法的实施过程。
Vibration and frequency are only related to the quality and stiffness, the only determination of the shape of the structure, it is called the characteristic parameters. The vibration mode is the complete orthogonal basis of structural displacement. The Pushover method based on mode loading mode is more reasonable than other methods. Participation in the calculation of the number of modes using the participation of structural mass participation coefficient modal vibration model with quantitative criteria to meet the safety requirements of precision. Finally, an example is given to illustrate the implementation of multi-modal adaptive Pushover method.