扭转效应对空间结构抗震性能的影响

Influence of Torsion Effect on Seismic Performance of Spatial Structure

为研究扭转效应对空间结构抗震性能的影响,运用了规范规定的底部剪力法,以偏心距为变量,推导出单维地震作用下偏心距和层间侧移的关系式,并利用数值分析,说明了线弹性扭转角和层间侧移的变化特征。结果表明:减小空间结构体系的偏心距,可以有效地减弱扭转效应,提高结构体系的抗震性能。

To research the influence of torsion effect on seismic performance of shear method and the numerical analysis are used, Relational formula of eccentricity duced in one-dimensional earthquake action when eccentricity is variable, and spatial structure , the bottom and layer-displacement is devariation features is explained. Results show that eccentricity reduction can effectively weaken torsion effect and improve the structure of the seismic performance.