曲线段地铁运行对某体育馆振动影响预测分析  

Prediction and analysis of the influence of subway running in curve section on the vibration of a gymnasium

作　　者：左汉文 赵志亮 杜浦 ZUO Hanwen;ZHAO Zhiliang;DU Pu(China Electronics Engineering Design Institute Co.,Ltd.,Beijing 100840,China;College of Civil Engineering,Guangzhou University,Guangzhou 510006,China;Zhengzhou ATMT Energy Saving Technology Co.,Ltd.,Zhengzhou 450018,China)

机构地区：[1]中国电子工程设计院股份有限公司,北京100840 [2]广州大学土木工程学院,广东广州510006 [3]郑州阿特美特节能技术有限公司,河南郑州450018

出　　处：《地震工程与工程振动》2023年第6期150-158,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家重点研发计划项目(2018YFC0705701);市区两级重大关键任务科技支撑专项(Z191100005619011-1)。

摘　　要：为了解曲线段下普通整体道床和钢弹簧浮置板道床对既有建筑物内楼板位置振动影响情况,对后期同类项目地铁线路规划提供指导参考。以郑州地铁7号线下穿某体育馆项目为背景,首先对体育馆内部振动评估点位置与外部地面进行同步背景振动测试,将各测点进行1/3倍频程频谱分析,分析体育馆内、外的传递规律。其次,结合已通车的同类地铁线路进行振源模拟测试,对隧道壁及地面位置进行1/3倍频程频谱分析,分析不同道床形式下地铁列车振动源强数据以及土体模型仿真计算校核参数。再次,建立有限元模型计算不同道床形式下地面振动速度响应。最后,结合体育馆内、外传递规律,预估地铁通车后体育馆内评估点位置振动响应。研究表明:若采用普通整体道床,地面位置水平向振动速度响应峰值在63 Hz达到0.03 mm/s,传递至体育馆内顶层楼面处会放大至4.50 mm/s,超过其控制标准2.50 mm/s的限制,若采用钢弹簧浮置板道床,竖直向最大振动速度峰值为0.04 mm/s,水平向为1.36 mm/s,均满足体育馆振动控制标准。In order to assess the impact of regular integral trackbed and steel spring floating slab trackbed on the vibration of existing building floor positions,and provide guidance and reference for future similar projects in subway line planning,a study was conducted in the context of the undercrossing of a sports arena project by Zhengzhou Metro Line 7.Firstly,synchronous background vibration tests were performed on the evaluation points inside the sports arena and the external ground,followed by 1/3 octave frequency spectrum analysis on each measurement point to analyze the transmission characteristics inside and outside the sports arena.Subsequently,vibration simulation tests were carried out,taking into account existing metro lines,to analyze the 1/3 octave frequency spectrum of the tunnel walls and ground.Different trackbed forms were considered,and the data for subway train vibration sources and the verification parameters for soil model simulations were determined.Finite element models were then established to calculate the ground vibration velocity response under different trackbed forms.Finally,considering the transmission characteristics inside and outside the sports arena,the vibration response at evaluation points inside the sports arena after the operation of subway was estimated.The studies indicate that,if a regular integral trackbed is utilized,the peak horizontal vibration velocity response at ground level reaches 0.03 mm/s at 63 Hz,and it amplifies to 4.50 mm/s at the top floor of the sports arena,exceeding the control limit of 2.50 mm/s.However,if a steel spring floating slab trackbed is adopted,the maximum vertical vibration velocity peak is 0.04 mm/s,and the horizontal vibration velocity is 1.36 mm/s,both of which comply with the vibration control standards for the sports arena.

关 键 词：体育馆 振动速度 1/3倍频程 曲线段 

分 类 号：TB53[理学—物理] O329[理学—声学]