摘要
为分析地铁列车运行引起的地面振动响应特性,运用ANSYS/LS-DYNA计算软件建立振动响应分析模型,并结合广州地铁实际情况,分析不同轨面埋深、土层类型、运行车速、列车车型、减振扣件及建筑物影响下的地面振动响应特性。研究结果表明:轨面埋深会对地面振动产生一定影响;隧道下卧土层对于地面振动的影响小于上覆土层的影响;降低列车车速可有效减小地面的振动响应;地铁A型车相较于B型车,其运行引发的地面振动响应更大;减振扣件对于地铁列车运行引起的地面振动减振效果明显;建筑物对于地面振动传播具有一定衰减效果。
In order to analyze the ground vibration response characteristics caused by subway train operation,the model for vibration response analysis is established by using the calculation software ANSYS/LS-DYNA.Combined with the actual situation of Guangzhou Subway,the ground vibration response characteristics under the influence of different rail surface buried depths,soil types,train speeds,train types,damping fasteners and buildings are analyzed.The results show that the buried depth of rail surface will affect the ground vibration;the influence of the underlying soil layer on the ground vibration is far less than that of the overlying soil layer;reducing train speed can effectively reduce the ground vibration response;the ground vibration caused by Metro A-type vehicle is more intense than that caused by Metro B-type vehicle;the vibration damper fastener has obvious effect on the ground vibration caused by the subway train operation;and buildings have certain attenuation effect on ground vibration propagation.
作者
李平
王明昃
赵晨
裴鑫
王威
冯青松
LI Ping;WANG Mingze;ZHAO Chen;PEI Xin;WANG Wei;FENG Qingsong(Guangzhou Metro Design and Research Institute Joint Stock Limited Company,Guangzhou 510330,China;Engineering Research Center of Railway Environmental Vibration and Noise,Ministry of Education,East China Jiaotong University,Nanchang 330013,China)
出处
《铁道标准设计》
北大核心
2022年第9期38-44,共7页
Railway Standard Design
基金
江西省主要学科学术和技术带头人培养计划项目(20194BCJ22008)
江西省重点研发计划项目(20192BBE50008)。
关键词
地铁
地面振动响应
数值分析
振动加速度
最大Z振级
subway
ground vibration response
numerical analysis
vibration acceleration
maximum Z-vibration level
