Abstract: Three full-scale floor specimens with different paving structures were designed and fabricated. Impact hammer tests applied single-point excitation to beams beneath slabs with varying surface treatments, while dynamic properties and room sound pressure levels were measured to assess constrained layer damping (CLD) effects on vibration and indoor noise. An acoustic-structural coupled finite element model was developed in COMSOL Multiphysics and validated experimentally. Parametric studies on floor thickness, damping layer parameters, and surface materials revealed their combined effects on vibration and noise suppression.

Key words: reinforced concrete floor, constrained layer damping structures, structural radiated noise, full-scale experiments, numerical simulation

摘要： 本文设计并制作了三种铺装结构的足尺实验楼板构件，通过使用力锤对不同表面构造实验楼板下方的梁结构进行单点激励，同时对楼板的动力特性和楼板表面所在房间的声压级进行同步测试，研究了约束阻尼层结构对楼板振动和室内辐射噪声的影响。使用COMSOL Multiphysics建立楼板的声-固耦合有限元模型，并基于实验数据对模型的精度进行校核。在原模型的基础上，以楼板厚度、阻尼层厚度、阻尼材料参数、面层材料等作为变量，通过调整模型来研究不同参数组合变化对楼板振动和辐射噪声的影响，并总结其抑制效果。

关键词: 钢筋混凝土楼板, 约束阻尼结构, 结构辐射噪声, 足尺实验, 仿真分析