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25. Acceleration Response of Prestressed Cable RC Truss Floor System Subjected to Heel-Drop Loading.

Author

Xuhong Zhou, Liang Cao, Frank Chen, Y., Jiepeng Liu, and Jiang Li

Subjects
REINFORCED concrete, CONSTRUCTION materials, PRESTRESSED concrete, CONCRETE construction, REINFORCED concrete buildings
Abstract

This paper describes and discusses the vibration serviceability of the innovative prestressed cable-reinforced concrete truss (i.e., prestressed cable RC truss, PCT for abbreviation) floor system subjected to heel-drop impact loading, based on the theoretical and experimental studies. In the theoretical analysis, the PCT floor system is idealized as an anisotropic rectangular plate with four built-in edges and the weighted residual method was used. A field test was carried out to investigate the dynamic characteristics of the PCT floor system and to validate and demonstrate the convergence of the theoretical solution. As a result, the experimental results agree well with the theoretical ones. The decrease of vibration is dramatic in the direction perpendicular to the PCT girder and is at a slower rate along the direction of the girder. The investigated PCT floor system has a low fundamental natural frequency (<4 Hz) with low damping ratio (≈2%). According to one standard of vibration criteria, the innovative floor system exhibits satisfactory vibration perceptibility. [ABSTRACT FROM AUTHOR]

Published
2016
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