Analysis of floor vibration evaluation methods using a large database of floors framed with W-Shaped members subjected to walking excitation. (January 2020)

• Record Type: Journal Article
• Authors: Royvaran, Mohammad; Avci, Onur; Davis, Brad
• Is Part Of: Journal of constructional steel research. Volume 164(2020)
• Publication Date: 2020-01
• Subjects: Steel framed floors -- Floor vibrations -- Vibration serviceability evaluation -- Serviceability methods -- Walking excitations; Steel, Structural -- Periodicals; Building, Iron and steel -- Periodicals; Acier de construction -- Périodiques; Construction métallique -- Périodiques; 624.1821
• DOI: 10.1016/j.jcsr.2019.105764
• Languages: English
• ISSNs: 0143-974X

Abstract

Abstract: Floor vibration is widely recognized as an important limit state in the design of steel-framed floors, and various evaluation methods have been developed over the years. These methods range from simplified methods that are suitable for routine usage during the design phase to complex computerized or probabilistic models. The former are in common usage in the structural design community. It is critically important to structural engineers that the accuracies of the commonly used methods are known; however, a study of these methods based on a large database of recorded observations is not available in the literature. Therefore, the authors investigated the evaluation accuracy of four well-known simplified methods by comparing predicted and observed acceptability (whether or not occupants complained) of 50 floor bays in real buildings framed with W-shaped members subjected to walking excitations. The percentage of correct predictions is used to judge the accuracy of each method. It is observed that the AISC Design Guide 11 accurately predicted acceptability of floors; two methods from the SCI P354 (Simplified Method and Vibration Dose Value Method) fairly accurately predicted acceptability of floors. The HIVOSS method provided unconservative predictions. In addition, modified version of the P354 method was investigated in an attempt to improve the accuracy of these methods. Highlights: Floor vibration evaluation methods range from simplified methods to complex computerized or probabilistic models. It is important to structural engineers that the accuracies of the commonly used methods are known. The authors investigated the evaluation accuracy of four well-known simplified methods. Predicted and observed acceptability are compared for 50 floor bays in real buildings. The percentage of correct predictions is used to judge the accuracy of each method.