交通环境振动对质子重离子设备平台影响研究  

Study on the influence of traffic environmental vibration on the proton and heavy ion equipment platform

作　　者：林彬 董洪力 董华 黄镇[1] LIN Bin;DONG Hongli;DONG Hua;HUANG Zhen(School of Civil Engineering,Southeast University,Nanjing 211100,China;Xuzhou Industrial City Development Group Co.,Ltd.,Xuzhou 221018,China;Xuzhou Xinkai Investment Industry Co.,Ltd.,Xuzhou 221018,China)

机构地区：[1]东南大学土木工程学院,江苏南京211100 [2]徐州市产城发展集团有限公司,江苏徐州221018 [3]徐州新凯投资实业有限公司,江苏徐州221018

出　　处：《地震工程与工程振动》2025年第1期95-102,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51278106)。

摘　　要：质子重离子设备因其高精度治疗能力近年来得到关注和应用。医院多位于城市交通繁忙区域,道路交通环境是否对拟建项目高精度设备性能正常工作产生影响,需要对项目的建设方案进行可行性评估。文中以实际工程为研究对象,采用现场实测的方法,研究道路交通荷载引起的场地振动频率特征和峰值加速度衰减模式,并构建实际结构的三维有限元模型,分析质子重离子设备平台受交通环境影响的动力响应。研究结果表明,道路交通产生的振动频率主要集中在5~20 Hz区域。随距离的增加,高频振动迅速衰减。距道路中心线不同距离下的交通荷载峰值加速度表现出多级放大现象,且在某些区域峰值加速度可能超过振源本身。通过1/3倍频程分析,质子重离子中心区域主要受到的环境振动频率范围为5~20 Hz和40~60 Hz。Z振级分析表明,设备平台环境振动动力响应满足预定的动力响应标准设计要求。研究可为对高精设备平台稳定性有要求的设施考虑交通环境影响的建设方案可行性论证提供参考。Proton and heavy ion therapy facilities have garnered significant attention and widespread application in recent years due to their high-precision treatment capabilities.Hospitals are often located in urban areas with busy traffic,raising concerns about the potential impact of the road traffic environment on the normal operation of these planned high-precision devices.It necessitates a detailed feasibility assessment of the construction proposal for the project.This paper focuses on an actual engineering project,employing on-site real measurements to study the frequency characteristics of site vibrations induced by road traffic loads and the decay pattern of peak accelerations.A three-dimensional finite element model of the actual structure was developed to analyze the dynamic response of the proton and heavy ion therapy platform influenced by traffic conditions.The findings indicate that the vibrations generated by road traffic are primarily concentrated in the 5 Hz to 20 Hz range.High-frequency vibrations decay rapidly with distance.Peak accelerations of traffic loads at various distances from the road s centerline exhibit a multi-level amplification phenomenon,and in some areas,the peak acceleration may exceed that of the vibration source itself.Through 1/3 octave band analysis,the environmental vibration frequencies mainly affecting the central area of the proton and heavy ion facility range between 5 Hz to 20 Hz and 40 Hz to 60 Hz.Z-vibration level analysis shows that the platform s environmental vibration dynamic response meets the predefined standards for dynamic response design.This study provides a reference for the feasibility demonstration of construction plans considering the impact of traffic environments on facilities requiring high-precision equipment platform stability.

关 键 词：质子重离子医院 道路交通环境 加速度响应评价 Z振级和1/3倍频程分析 有限元方法 

分 类 号：TU311.3[建筑科学—结构工程]