防屈曲支撑抗震耗能性能分析

Analysis of Seismic Energy Dissipation Performance of Buckling Braces

本文以十字内芯外约束为方钢管和圆钢管,内芯为圆钢管外约束也是圆钢管的截面三种截面作为研究对象。研究对三种不同截面防屈曲支撑位移和极限承载力的影响,以及多因素互相影响分析。分析结果表明,在相同位移幅值下,十字芯外约束方钢管的防屈曲支撑滞回环包络面积最大;随着约束比的提高,内芯屈服荷载逐渐比屈曲荷载大;内芯宽厚比的增大支撑会出现一定程度的滞后现象;对于防屈曲支撑连接刚性,约束刚度比越大,对其力学性能的影响越小。

In this paper, cross inner core outside constraint of square steel pipe and circular steel pipe, cross inner core outside constraint is square steel pipe and circular steel pipe. The influence of the study on the displacement and the ultimate bearing capacity of three different sections of the buckling prevention support and the interaction analysis of the multiple factors are analyzed. The analysis results show that the analysis is made under the same displacement amplitude. With the increase of the constraint ratio, the inner core yield load is gradually larger than the buckling load, and the support of the inner core width ratio will appear to a certain degree of lag. The smaller the effect of the performance.