（中南建筑设计院股份有限公司， 武汉 430071）

［摘要］通过对一个采用不同结构体系的实例进行侧移刚度分析及对侧移刚度理论公式进行物理含义分析，讨论了判断结构抗侧移效率高低不能采用侧移刚度指标的原因。以结构体系的抗侧移刚度为基础，提出了抗侧移系数、等效抗侧移系数两个力学指标，给出了两个力学指标的计算公式，并对其单位的含义进行了讨论。通过采用抗侧移系数、等效抗侧移系数两个力学指标对采用不同结构体系的实例进行抗侧移效率分析，得出采用这两个力学指标来定量分析和评价适用同一建筑的各种结构体系的抗侧移效率是可行的。

［关键词］侧移刚度； 抗侧移系数； 等效抗侧移系数

中图分类号：TU381文献标识码：A文章编号：1002-848X(2020)08-0035-04

Evaluation approach of lateral displacement resistance ability for different structural systems

CHEN Yanzhou, LI Ting, LI Hongsheng

(CentralSouth Architectutal Design Institute Co.， Ltd., Wuhan 430071， China)

Abstract:By analyzing the lateral stiffness of an example using different structural systems and analyzing the physical meaning of the theoretical formula of the lateral stiffness, the reasons why the lateral stiffness index cannot be used to determine the efficiency of the lateral stiffness of the structure were discussed. Based on the lateral stiffness of the structural system, two mechanical indices of lateral displacement resistance coefficient and equivalent lateral displacement resistance coefficient were proposed. The calculation formulas of two mechanical indexes were given, and the meanings of their units were discussed. By adopting two mechanical indexes of lateral displacement resistance coefficient and equivalent lateral displacement resistance coefficient, the lateral displacement resistance efficiency analysis was performed on the examples using different structural systems. It is concluded that it is feasible to use these two mechanical indexes to quantitatively analyze and evaluate the lateral displacement resistance efficiency of various structural systems applicable to the same building.

Keywords:lateral stiffness; lateral displacement resistance coefficient; equivalent lateral displacement resistance coefficient