三种支撑钢框架性能的比较分析

基于Pushover方法,分析了K形偏心支撑、Y形偏心支撑、Y形隅撑支撑等三种支撑钢框架耗能梁段长度和截面刚度对结构抗震性能的影响,从刚度、延性和耗能三方面比较了三种支撑钢框架的结构性能。结果表明,在合理设计的情况下,Y形隅撑支撑钢框架可同时达到最好的刚度和延性;K形偏心支撑钢框架耗能最好;Y形偏心支撑钢框架的刚度和耗能最差,延性介于前两者之间。

Comparative Analysis of Three Types of Steel Braced Frames

Based on Pushover method,three types of braced frames called K-shape eccentric braced frame(KEBF),Y-shape eccentric braced frame(YEBF) and Y-shape knee braced frame(YKBF) are analyzed to find the influence regularities of the length and size of link beams on their earthquake-resistant performance(ERP),then the three types of braced frames are compared in stiffness,ductility and energy dissipation.According to the analytical result,it can be found that under the reasonable design,YKBF can win the best stiffness and ductility,but KEBF can dissipate the most energy;the stiffness and energy dissipation of YEBF is the worst and its ductility is between the others.