Evaluation of Floor Vibrations Induced by Walking Barefoot in Heavyweight Buildings
Floor vibrations induced by humans walking barefoot were investigated in heavyweight buildings. Six floating floors with diff erent floor structures and thick resilient isolators were built in laboratories with the same dimensions and boundary conditions. Subjective tests were performed to assess the vibration serviceability of the floor structures. In the first test, subjects were asked to walk across a floor and then rate the intensity of the vibrations, and the acceptability and serviceability of the floors. In the second test, subjects were seated on a chair in the middle of the floor and asked to rate the floor vibrations when a walker passed by the subjects. Floor vibrations induced by human walking were analysed using peak acceleration, root-mean-square (r. m. s.) acceleration, and the vibration dose value (VDV), with four frequency weighting functions (Wb , Wk , Wg , and Wm ). Significant diff erences in the measured floor vibrations were found across the floor structures with greater floor vibration leading to greater perceived vibration intensity, lower acceptability, and lower serviceability. The VDV was correlated with perceptions of floor vibration when used with all four frequency weighting functions. The impact noise induced by walking did not influence subjective evaluations of floor vibration. A heavy/soft impact source (a standard impact source) provided a useful prediction of differences between the perception of the vibration on different floors.
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Document Type: Research Article
Publication date: November 1, 2015
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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