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以聊城光岳楼木结构为研究对象,基于其实测动力特性参数,采用ANSYS软件建立了上部木结构-高台基-地下市政管道及周围土层整体有限元模型,模拟讨论了不同车辆类型、不同车速、安全距离及车辆作用方式等多种工况下光岳楼木结构的振动响应;针对地面交通振源特点,提出了设置环形隔振沟作为减振措施,讨论隔振沟位置、深度、宽度及填充材料对减振效果的影响。结果表明:环形隔振沟的位置、深度对减振效果影响较大,宽度影响较小;硬性填充材料比弹性材料更有利于减振。为减小地面车辆振动对光岳楼木结构的影响,建议将环形隔振沟设置在距光岳楼中心点35m处,深度取6m、宽度取2m,且沟内填充材料混凝土有利于减振。
Based on the actual measured dynamic characteristic parameters, the finite element model of the upper timber structure - Gaotai - underground municipal pipelines and the surrounding soil is established by using the measured dynamic characteristic parameters of Liaoguang Guangyue House. The simulation and discussion is made on the different types of vehicles, , The safety distance and the mode of operation of the vehicle under various operating conditions. In view of the characteristics of ground traffic vibration sources, the paper puts forward the proposal of setting the annular vibration isolation ditch as the vibration reduction measures and discussing the location, depth, width and Effect of Filler on Vibration Reduction. The results show that the location and depth of the annular vibration isolation groove have a great influence on the vibration damping effect and the width has little effect. The rigid filling material is more advantageous to the vibration damping than the elastic material. In order to reduce the influence of ground vehicle vibration on the wood structure of Guangyue House, it is suggested that the annular vibration isolation groove should be set 35m away from the center of Guangyue House, with a depth of 6m and a width of 2m, and the filling concrete in the groove is beneficial to vibration reduction.