铁路桥式站桥建合一结构体系研究及抗震性能分析  

Research on the structural system and seismic performance analysis of bridge-style high speed railway station

作　　者：陈前 鲍华[1] 彭俊[1] Chen Qian;Bao Hua;Peng Jun(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《山西建筑》2025年第7期43-48,共6页Shanxi Architecture

基　　金：中国国家铁路集团有限公司科技研究开发重大课题(课题编号:K2022G059)。

摘　　要：以典型两台四线桥式站为研究对象,对“桥建合一”结构体系进行了研究。首先,对三种承轨层结构体系方案进行了对比,并分析了不同垂轨向柱跨以及设置垂轨向分布次梁对结构性能的影响;然后对各方案结构体系的抗震性能进行了研究。研究结果表明:三种承轨层结构体系均能够满足设计要求,其中“型钢混凝土柱+型钢混凝土梁+现浇楼板”体系具有更好的侧向和竖向刚度;垂轨向三柱跨方案较两柱跨方案构件尺寸有明显优化,最大竖向挠度减小了14.37%,且在结构上起到了物理分隔正线列车和到发线列车振动的作用;增设垂轨向次梁增强了承轨梁系的垂轨向约束,能够有效改善楼盖的竖向刚度;按小震反应谱并考虑承轨层地震放大系数1.5进行设计后,设计结果能够满足小震和中震水准下的性能化目标,但无法满足大震水准下的性能化目标,需对承轨层中柱及站台雨棚柱进行加强。A study was conducted on the bridge-station combined structures by taking a typical two-platform,four-line bridge station as the research object.A comparison was made between three types of rail bearing layer structural system schemes,and the impact of different vertical rail column spans and the setting of vertical rail distribution secondary beams on the overall structural performance was analyzed.The seismic performance of each scheme’s structural system was also studied.The research results indicate that all three types of rail bearing layer structural systems can meet the design requirements,among which the“steel reinforced concrete columns+steel reinforced concrete beams+cast-in-place floor slabs”system has better lateral and vertical stiffness;The vertical three column span scheme has a significant optimization in component size compared to the two column span scheme,with a maximum vertical deflection reduction of 14.37%.It also plays a role in physically separating the vibration of the main line trains and the arrival and departure line trains in the structure;The addition of vertical rail secondary beams enhances the vertical rail constraint of the rail bearing beam system,which can effectively improve the vertical stiffness of the floor;After designing according to the small earthquake response spectrum and considering the seismic amplification factor of 1.5 for the rail bearing layer,the design results can meet the performance goals under small and medium earthquake levels,but cannot meet the performance goals under large earthquake levels.Therefore,it is necessary to strengthen the middle column of the rail bearing layer and the platform canopy column.

关 键 词：桥式站 桥建合一 时程分析 抗震性能 

分 类 号：TU997[建筑科学—市政工程] TU311