【摘要】 从能量的角度对抗震计算中的一些问题进行了研究:提出了判断振型数足够与否的通用方法;提出基于结构总变形能的最不利地震作用方向的概念,并具体给出了计算方法;从反应能的观点定义了振型方向角,并给出计算公式;借鉴ETABS程序定义了振型的侧振成分和扭振成分的计算公式,并给出了一个几何解释。上述成果已在PMSAP、SATWE和TAT结构分析程序中实现,应用效果良好。更多还原

【Abstract】 Based on the viewpoint of strain energy,some problems in structural earthquake analysis have been researched in this paper.Firstly,a general method of judging the adequacy of the number of participation modes is proposed.Secondly,the author advances the concept of "the most disadvantageous earthquake direction",on which a detailed algorithm is given.Then the direction angle of a mode is defined and the corresponding calculation formulas are also listed.At last,the calculation formulas for the lateral and the torsional vibrating components of a mode are presented.更多还原