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以典型规则框架结构为研究对象，针对框架结构在多遇水平地震作用下仍处于弹性工作阶段这一基本事实，利用结构优化设计原理及抗震设计基本理论，时框架结构提出了弹性工作阶段以顶点侧移为控制目标的结构优化模式，确定了优化目标函数，最终给出了典型规则R．C框架结构在多遇水平地震作用下梁、柱截面尺寸的计算公式及梁、柱最佳刚度比的表格形式。
Taking the typical regular frame structure as the research object, aiming at the basic fact that the frame structure is still in the elastic working stage under the action of multiple horizontal earthquakes, the structural optimization design principle and the basic theory of seismic design are adopted. The lateral shift is the structure optimization model of the control target, and the optimization objective function is determined. Finally, the typical rule is given. The calculation formula of the cross-section dimensions of beams and columns and the optimal stiffness ratio of beams and columns in the form of a C-frame structure subjected to multiple horizontal earthquakes.