摘要
为评价地铁车辆段上盖建筑车致振动响应对人体舒适度的影响并指导减隔振措施设计,以深圳地铁某车辆段上盖钢框架结构为对象,基于波传导理论提出了计算高效的竖向振动预测模型。该模型包含两个子模型,子模型一基于阻抗法考虑竖向振动以轴向波的形式沿结构柱向上传播,以上盖平台柱脚速度作为输入预测上盖建筑各楼层柱脚振动响应;子模型二考虑梁板组合效应,推导了梁端驱动点阻抗,利用子模型一计算得到的柱脚振动速度作为输入,基于功率守恒原理预测楼板时空平均振动响应。通过将预测模型的计算结果与现场实测结果进行对比,验证了预测模型的有效性。研究成果可为地铁车辆段上盖建筑车致振动提供高效、简便的科学预测方法和理论依据。
Here,to evaluate effects of vehicle-induced vibration response of metro depot superstructure on human comfort and guide design of vibration reduction and isolation measures,taking a steel frame superstructure of a certain metro depot in Shenzhen as the study object,a computationally efficient vertical vibration prediction model was proposed based on the wave propagation theory.The proposed model was composed of two sub-models.The sub-model 1 based on the impedance method considered vertical vibration propagating upward along the structural column in the form of axial wave,and the support column foot vibration velocity of the whole superstructure platform was used as the input to predict column foot vibration response of each floor of the superstructure.The sub-model 2 considered the beam-slab combined effect,the driving point impedance at the beam end was derived.Column foot vibration velocities calculated in the sub-model 1 were used as inputs,respectively to predict the space-time average vibration response of each floor based on the principle of power conservation.By comparing the calculated results using the prediction model with the onsite actually measured results,the effectiveness of the prediction model was verified.It was shown that the study results can provide an efficient and simple scientific prediction method and theoretical basis for vehicle-induced vibration of metro depot superstructures.
作者
陶子渝
汪益敏
邹超
TAO Ziyu;WANG Yimin;ZOU Chao(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,China;School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2022年第7期62-67,73,共7页
Journal of Vibration and Shock
基金
国家自然科学基金项目(51908139)
广东省科技计划项目(2017A050501005)。
关键词
地铁车辆段
上盖建筑
车致振动
预测模型
波传导
驱动点阻抗
功率守恒
metro depot
superstructure
vehicle-induced vibration
prediction model
wave propagation
driving point impedance
power conservation
