(上海城建职业学院， 上海 200438)

［摘要］高架车站顶棚钢结构跨缝一般都考虑设置耗能型屈曲约束支撑，其目的是为了协调顶棚钢结构与主体混凝土150mm的抗震位移，增强钢结构本身及整体结构的抗震性能。介绍了屈曲约束支撑在轨交高架车站中的应用，以上海地铁17号线赵巷站项目为例，阐述了屈曲约束支撑的优势、受力原理以及受力性能。通过有限元分析，与无屈曲约束支撑的结构对比发现，在设防地震作用下，有屈曲约束支撑的结构轴力、剪力以及用钢量均有不同程度的减小；同时，在罕遇地震作用下，结构的变形、位移也明显减小。

［关键词］屈曲约束支撑；高架车站；协调变形；有限元分析；受力性能；抗震性能 

中图分类号：TU328 文献标识码：A文章编号：1002-848X(2021)24-0117-05

Application of buckling restrained brace in track transportation elevated station engineering 

CHEN  Yu 

(Shanghai Urban Construction Vocational College, Shanghai 200438， China) 

Abstract: The span joints of the overhead steel structure at overhead station are generally installed in response to energy-dissipating buckling restraints. Its purpose is to coordinate the 150mm seismic displacement of the ceiling steel structure and the main concrete, enhance the seismic performance of the steel structure itself and the overall structure. The application of buckling restraint support in rail transit elevated stations was introduced. Zhaoxiang Station project of Shanghai Metro Line 17 was taken as a specific case to illustrate the advantages, the principle of stress and mechanical performance of buckling restraint support. Through the finite element analysis,  contrasting with those structures with no buckling,  it was founded that under the action of fortification earthquake, the axial force, shear force and steel consumption of the structure with buckling restraint support are reduced with certain degrees, meanwhile, the deformation and displacement of the structure are also significantly reduced under rare earthquakes. 

Keywords:buckling restrained brace； overhead station； coordinated deformation； finite element analysis； mechanical performance； seismic performance

 作者简介：陈瑜，硕士，讲师，Email:chenyu@succ.edu.cn。