For example , the pushover curve analysis has no way to consider the hysteretic energy and the energy dissipation in other ways , and to consider the material fatigue and the scathe in the structures " to - and - fro motion . the work done in this thesis is mainly as follows for trying to make better of the capacity - demand curve in existence : 1 . confirm the factors those caused the discrepancy between the different capacity curves : the shape of lateral load distribution , assumption of member bars model , irregularity of the structures , p - effects 为此,本文有针对性地开展了一些工作:阐述了基于性态的设计方法和基于位移的设计方法的相关概念及发展历程;介绍了几种现有的能力-需求曲线法的原理及分析步骤并剖析了它们的不足;列举了影响能力-需求曲线法计算准确性的主要因素,通过算例比较分析它们各自的影响程度从而得出了其中最为重要的影响因素;针对已有的分析结论提出了对现有能力-需求曲线法的改进方案,通过算例分析验证了改进效果。