新型双层式高铁站房结构的车致振动舒适度分析  

Analysis of train-induced vibration comfort of a novel double-story high-speed railway station

作　　者：智国梁 郭彤[1] 张丽娜 胡文林 王少林 Zhi Guoliang;Guo Tong;Zhang Lina;Hu Wenlin;Wang Shaolin(School of Civil Engineering,Southeast University,Nanjing 211189,China;National Engineering Center for Digital Construction and Evaluation Technology of Urban Rail Transit,China Railway Design Corporation,Tianjin 300308,China)

机构地区：[1]东南大学土木工程学院,南京211189 [2]中国铁路设计集团有限公司城市轨道交通数字化建设与测评技术国家工程研究中心,天津300308

出　　处：《东南大学学报（自然科学版）》2023年第5期765-776,共12页Journal of Southeast University：Natural Science Edition

基　　金：中国国家铁路集团有限公司系统性重大项目(P2018G049)。

摘　　要：为了提升高铁车站旅客候车的舒适性,以国内某一新型双层式高铁车站为研究对象,对其站房内人体振动舒适度问题进行了研究.首先,采用改进后的迭代算法求解振源荷载,建立站房结构的有限元模型,并结合实测数据加以验证.然后,设置了4种分析工况,全面研究了行车速度和减振垫的铺设情况对双层站房结构振动特性和传递规律的影响.最后,选取2种振动舒适度指标,对轨行区和站房区的舒适度情况进行了评估.研究结果表明:站房结构以垂向、低频振动为主,列车速度增加可使站房结构的振动响应明显增加;采用道床减振垫可显著降低站房结构的振动响应,尤其对12.5~80 Hz频域内的振动降低最为明显;轨行区Z振级最值和分频振级最值均出现在地面轨道层,分别为84.7和81.6 dB,而站房区Z振级最值和分频振级最值则均出现在高架候车层,分别为69.1和68.4 dB.To enhance passenger comfort during high-speed railway station waits,human vibration comfort in a novel double-story high-speed railway station in China was investigated.Firstly,an improved iterative algorithm was employed to compute the vibration source loads,and a finite element model of the station was established and validated through field measurements.Then,four scenarios were defined to thoroughly analyze the impacts of train speed and the placement of vibration-damping pads on the vibration characteristics and transmission laws of the double-story station.Finally,two vibration comfort indicators were selected to assess comfort levels in both the track region and the station building region.The results show that the station exhibits predominant vertical,low-frequency vibrations,and increased train speed notably enhances the vibration response.The utilization of vibration-damping pads effectively reduces station vibration,particularly in the frequency range of 12.5 to 80 Hz.The peak Z-directional vibration levels and frequency-specific vibration levels in the track region are highest in the ground track floor,with values of 84.7 and 81.6 dB,respectively.While in the station building region,these peaks are consistently found in the elevated waiting hall,measuring 69.1 and 68.4 dB,respectively.

关 键 词：双层式高铁站房 振源荷载 车致振动 舒适度评价 有限元分析 

分 类 号：U238[交通运输工程—道路与铁道工程]