To meet users’ needs for the building comfort, this article researched the impact sound insulation performance of timber floor structure under different conditions. The research has been done on a common floor covering and three floating floor coverings (composed of Portuguese cork board, a kind of improved graphite polystyrene sound insulation board (BGL) and expanded polypropylene sound insulation board (EPP) respectively) in the same bedroom in a two-story light-weight timber structure. The tapping machine excitation and daily behavior excitation test methods have been used, and the field tests on the impact sound insulation of the floors under conditions that doors and windows are closed and doors and windows are opened have been validated. Based on the test result, the sound insulation effects has been analyzed; law of the sound pressure distribution of the noise sources and the change of sound pressure with frequency has been validated; the frequency characteristics of the noise sources has been summarized; and the optimization measures of sound insulation has been proposed. The main conclusions show that: the impact sound insulation effect of the floating floor is more significant than that of the ordinary floor, BGL floor has the highest impact sound pressure level improvement; the insulated sound pressure of the floating floors is 10–20 times more than that of the ordinary floor in condition of tapping machine; With the increase of the frequency, the measured impact pressure level of the floor decreases continuously, and the decrement of the impact sound of the floor increases; in the frequency range of 80-8000 Hz, the sound pressure distribution of the floating floor is lower than that of the ordinary floorsound pressure. The impact sound insulation test is expected to provide a useful reference for improving the sound insulation performance of the timber floor structure, and has high engineering application value for improving living comfort.

为了满足用户对建筑舒适性的需求，本文研究了不同条件下木地板结构的冲击隔音性能。这项研究是在位于同一卧室内的一个普通地板和三个浮动地板（分别由葡萄牙软木板，一种改进的石墨聚苯乙烯隔音板（BGL）和扩展的聚丙烯隔音板（EPP）组成）上完成的。两层楼的轻质木结构。使用了敲击机激励和日常行为激励测试方法，并验证了在门窗关闭和门窗打开的情况下地板冲击隔音的现场测试。根据测试结果，分析了隔声效果。验证了噪声源声压分布规律和声压随频率的变化规律。总结了噪声源的频率特性；并提出了隔声的优化措施。主要结论表明：浮动地板的冲击声隔离效果比普通地板要显着，BGL地板的冲击声压水平提高最快。在攻丝机的情况下，浮动地板的绝缘声压是普通地板的10-20倍；随着频率的增加，测得的地板冲击压力水平连续降低，地板冲击声的减小量增加。在80-8000 Hz的频率范围内，浮动地板的声压分布低于普通地板的声压。冲击声隔音测试有望为提高木地板结构的隔音性能提供有用的参考，并具有提高居住舒适性的工程应用价值。