针对目前常规的底部剪力法在确定结构基本周期上存在多种近似算法不能统一的问题,提出了一种基于等效单质点系的改进底部剪力法,从等效的角度避开对多质点体系基本周期的计算,并通过算例分析验证了该方法的可行性与精确性。 Aiming at the problem that the conventional bottom shear method can not unify many kinds of approximate algorithms in determining the basic structure periodicity of the structure, an improved bottom shear method based on the equivalent elementary points is proposed to avoid from the equivalent point Calculate the basic period of particle system, and verify the feasibility and accuracy of the method by example analysis.