Dynamic Response of Composite Floor Slab Under Human Rhythmic Activity

摘要

Modern construction structures are built with slender longer spans in an economical manner. Generally slender longer spans create annoyance like Vibration to the occupants. Man induced rhythmic activities like jumping, aerobics, dancing on floor structures lead vibration problems. These vibrations create discomfort to the occupants. The reasons for vibration problems may also be due to decreased natural frequency with increased longer spans and also due to decreased mass and dampness in building. Jumping exercises create periodic force which results in Harmonic overtone. It is recommended that problems related to vibration should be analysed during structural design period itself based on the occupancy usage and if it is required, proper provisions should be given to eradicate such vibration problems. The aim of this paper is to analyse the floor panel which is a composite concrete steel structure of size 12m × 16m. The panels are analysed using ANSYS 11. From ANSYS software, Modal analysis, Harmonic analysis and Transient analysis are done on these panels and the results which are obtained from these panels are compared with various recommendations. From the results it is suggested whether the panel is considered for dynamic analysis under human rhythmic activity like jumping, and dancing is suitable for human comfort.