Work

Effect of support legs of dry-type double floor structures on heavy-weight impact sound reduction performance using a rubber ball impact source

Year: 2026

Type: article

Abstract: Dry-type double floor structures are widely used in Japan as floor finishing systems for residential buildings, but they can increase heavy-weight impact sound. However, the influence of the installation conditions of support legs on the heavy-weight floor impact sound reduction performance of double floor structures has not yet been sufficiently investigated. In this study, the nonlinear effects of support legs arising from their contact conditions were examined through numerical simulations. First, a sectional model experiment and a corresponding numerical study were conducted to investigate the transfer force characteristics of double floor structures, demonstrating the importance of modeling the installation conditions when calculating the frequency characteristics of the transfer force. Then, a parametric study was carried out on the heavy-weight impact sound reduction performance of double floor structures. The results revealed that the nonlinearity of the support legs exerts a strong influence on the reduction performance, indicating that the installation conditions of the support legs must be considered as a design factor in double floor structures.

Source: Journal of Asian Architecture and Building Engineering

DOI: 10.1080/13467581.2026.2712012

Authors: Da Cao, Yu Aida, Naohisa Inoue, Tetsuya Sakuma

Institutions: Tongji University, Haseko Corporation (Japan), Kyushu University, The University of Tokyo

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,165

Funder: National Key Research and Development Program of China