论文部分内容阅读
城市轨道交通矩形地下结构抗震设计时,除了强度验算外,还需要变形验算。矩形地下结构在横截面一般可简化为矩形框架,可以使用层间位移角作为变形控制指标。参考地面建筑框架结构层间位移角的已有成果,通过分析地面建筑和地下建筑的异同,并统计了国内46组钢管混凝土框架和145组型钢混凝土框架的层间位移角的试验数据,结合城市轨道交通结构的特点和我国的国情,得出了城市轨道交通矩形地下结构的层间位移角的不同性能要求下的限值:小震、中震、大震下的限值分别为1/550、1/250、1/70。
Urban rail transit rectangular underground structure seismic design, in addition to strength checking, but also need deformation checking. Rectangular underground structure in the cross-section can be simplified as a general rectangular frame, the displacement angle can be used as an indicator of deformation control. By referring to the existing results of the displacement angle between the ground floor and the floor of the ground building structure, by analyzing the similarities and differences between the ground building and the underground building, the experimental data of the inter-story drift angle of 46 CFST frames and 145 SRC frames were calculated, The characteristics of rail transit structure and the national conditions of our country, we get the limit under the different performance requirements of the inter-story drift angle of the rectangular underground structure of urban rail transit: the limits under small, medium and large earthquakes are 1/550 , 1/250, 1/70.