摘要
为研究约束屈曲支撑(buckling restrained brace,BRB)对钢框架结构抗震性能的影响,文中以某高烈度地区教学用房为工程案例,进行减震设计。分别进行多遇地震反应谱分析和罕遇地震弹塑性时程分析。通过分析可知,小震时BRB处于弹性状态,为结构提供侧向刚度,能有效减小结构位移,有效控制层间位移角。大震时BRB对提高结构刚度、减小结构位移响应有较好的效果,BRB滞回曲线饱满,充分发挥其耗能作用,有效提高结构的抗震性能。文中研究成果可为类似工程提供参考。
To investigate the seismic performance of steel frame structures with buckling restrained braces(BRB),a teaching building located in a high-seismic region was used as a case study for seismic design.Both response spec-trum analysis for frequent earthquakes and elasto-plastic time-history analysis for rare earthquakes were conducted.The results indicate that under minor earthquakes,BRB remain elastic,providing lateral stiffness,effectively reduc-ing structural displacements and controlling inter-story drift angles.Under major earthquakes,BRB significantly en-hance structural stiffness and reduce displacement responses.The BRB hysteresis loops are full,demonstrating effec-tive energy dissipation and improving the overall seismic performance of the structure.The findings provide valuable reference for the seismic design of similar structures.
作者
郭峰
GUO Feng(Beijing Indtitute of Architectural Design Co.,Ltd.,Beijing 100045,China)
出处
《低温建筑技术》
2025年第9期73-77,共5页
Low Temperature Architecture Technology
关键词
约束屈曲支撑
减震设计
弹塑性时程分析
抗震性能
buckling-restrained braces
seismic mitigation design
elasto-plastic time-history analysis
seismic performance
