摘要
云南省某游泳馆主体采用钢筋混凝土框架结构附加BRB,采用YJK、SAP20002种软件对结构整体进行多遇地震下的反应谱及弹性时程分析、罕遇地震下的动力弹塑性分析。主要屋面采用空间管桁架,采用3D3S进行补充计算。分析结果显示罕遇地震作用下屈曲约束支撑均进入塑性阶段,框架梁出现大量塑性铰而无柱铰出现;表明该结构体系选取、结构布置合理,结构在设置了屈曲约束支撑(BRB)后,具有了良好的抗震耗能机制,有效提高了结构主体的安全性。
The main body of a swimming pool in Yunnan Province employs a reinforced concrete frame structure with additional BRB.The overall structure is analyzed for response spectrum and elastic time-history analysis under frequent earthquakes,and for dynamic elastic-plastic analysis under rare earthquakes,using two software programs,YJK and SAP2000.The main roof uses spatial pipe trusses,with supplementary calculations performed by 3D3S.The analysis results show that the buckling-restrained braces under rare earthquakes have entered the plastic stage.A large number of plastic hinges form in the frame beams,but no column hinges appear.This indicates that the structural system selection and structural layout are reasonable.After the buckling-restrained brace(BRB)is installed,the structure has a good seismic energy dissipation mechanism,which effectively improves the safety of the main body of the structure.
作者
刘佳毅
龚琦
LIU Jiayi;GONG Qi(Kunming Kunze Mining Technology Co.,Ltd.,Kunming Yunnan 650106,China;Kunming Engineering&Research Institute of Nonferrous Metallurgy Co.,Ltd.,Kunming Yunnan 650051,China)
出处
《有色金属设计》
2025年第3期97-102,共6页
Nonferrous Metals Design
关键词
消能减震
防屈曲支撑
钢桁架屋面
Energy dissipation and shock absorption
Anti-buckling brace
Steel truss roof
