本文阐述在多层钢筋混凝土框架中确定地震设计荷载的替换结构法.考虑结构在非线性范围内的能量演消散,此法利用的线性模型和反应谱.本文包括:(1)替换结构法的说明,(2)在八层框架中确定设计荷载的实例,(3)设计出的框架对地震运动的非线性反应分析的结果. This paper describes an alternative structure method for determining seismic design loads in multi-storey reinforced concrete frames. Consider the energy dissipation of structures in the nonlinear range, the linear model and response spectrum used by this method. This article includes: (1) Replacement structure method Explain (2) an example of determining the design load in an eight-story frame, and (3) the result of a nonlinear response analysis of the frame to the seismic motion.