地铁车辆段上盖建筑环境振动影响人们正常生活与身心健康，是制约地铁车辆段上盖综合体建设与推广的关键障碍。如何揭示土层与建筑基础耦合作用机理，并突破上盖建筑振动在频域内的预测精度，是研究地铁车辆段上盖建筑振动传播规律与预测方法的重要前提与必要基础。本项目基于“传播规律分析-阻抗模型构建-预测方法研究”的研究主线，通过现场试验研究地铁车辆段试车线、咽喉区列车运行引起竖向振动在上盖建筑中的传播规律，构建振源、传播途径、上盖建筑间振动传递函数；在此基础上，基于阻抗函数构建“土层-建筑基础-上盖平台-上盖建筑”动力阻抗模型，结合现场实测车轨系统-土层耦合振动传递函数，提出一种新的地铁车辆段上盖建筑振动“三阶段”混合预测方法，突破现有振动预测模型计算工作量大和对频域响应预测不够精确的局限，为地铁车辆段上盖建筑在前期规划和设计阶段提供一种高效、精确、便捷的预测方法，为该类工程设计提供理论依据和技术支撑。

The train induced vibrations in the metro depot and over-track buildings has an impact on human's daily life and physical and mental health, which is the key obstacle to the construction and promotion of over-track building complex. To reveal the coupling mechanism between the soil layer and the building foundation, and break through the vibration prediction accuracy of over-track buildings in the frequency domain is an important prerequisite and necessary basis for studying of the vibration transmission and prediction of metro depot and over-track buildings. This project aims to study the vibration transmission and prediction in the metro depot and over-track buildings through a three-step research: 1) establish vibration transfer function; 2) derive impedance function; 3) propose prediction method. The train induced vertical vibration transmission in the test line region and throat area is studied systematically by field measurement, and the transfer functions of vibration source, transmission path and over-track buildings are built. On this basis, the dynamic impedance model of "soil layer-building foundation-over-track platform-over-track building" is constructed based on the impedance function. By combining with measured transfer function of the rail system and soil layer, a new hybrid vibration prediction method of the metro depot and over-track buildings is proposed, which breaks through the limitations of the existing traditional vibration prediction model, such as the large calculation and the inaccuracy of frequency domain response prediction. The study will provide a highly efficient and accurate as well as convenient vibration prediction method in the frequency domain for the early planning and design stage of the development of metro depot and over-track building complex, and provide reliable theoretical guidance and technical support for the practical engineering application.