Assessment of Vibrations in Floors Excited by Rhythmical Human Force
Translated title
Vurdering af vibrationer i gulve påvirket af rytmisk personlast
Term
4. term
Education
Publication year
2011
Submitted on
2011-06-08
Pages
131
Abstract
An actual deck in the cultural centre of Nordkraft is analyzed with respect to structural vibrations. The deck forms the floor of a sports hall and is placed on top of a theatre hall. The construction is suspected to be excitable by human jumping loads in an critical manner, and the response of the deck towards this load type has the main focus. At first, a frequency analysis of the deck is performed in order to clarify the natural frequencies, vibration modes as well as other modal parameters. From this knowledge, the structural response from human-induced jumping loads is analyzed and compared to the limit values given in the relevant building code. During both the frequency analysis and response analysis different techniques are utilized including analytical and numerical methods, as well as experimental measurements on the actual construction. Results from the different approaches are compared and assessed. Through experiments, characteristic properties of human-induced jumping loads are described, and this is used to assess the load expressions, which has been used to model the human jumping loads.