Experimental Study On Floor Vibration Comfort Of The Hotel In Changsha International Convention And Exhibition Center

With the consruction of more and more large public buildings,large span floor is applied more and more widely,the comfortable degree in structural design has been paid more attention.The hotel in Changsha International Convention and exhibition center which built by Yuandakejian technology Co.Ltd.the project 1 to 4 floor building functions mainly for restaurants,conference halls and other public venues,a larger span,less partition.Domestic and research shows that when there is specific human activities on the floor,such as piaffe,stand up,marching,started running condition,the crowd load excitation frequency and the structure of the self vibration frequency close to,floor structure is easy to produce resonance,make people uncomfortable.This paper inspection of the project floor vertical comfort conditions and provide a basis for the design,with experiment and study,theoretic calculation combining the floor vertical vibration comfort performance analysis and evaluation.A full-scale model was established for vibration serviceability test under human-induced excitation,which is the meeting room's 27.3mX 15.6m prefabricated steel structure integrated floor in the third layer of Changsha International Convention and Exhibition Center Boutique Hotel.8 excitation were imposed on the floor including single person walking,5 people walking and 10 people walking.The result shows that the integrated floor meets the vibration serviceability.The finite element simulation of the 8 excitation is carried out by the walking route method,the calculated values are compared with the measured values,and the data are in good agreement.Studies find that,when walking along the floor X,the acceleration response is greater than the Y direction;the filling treatment used between the main board weaken the overall stiffness of the floor;diversion of the flow can effectively reduce the vibration response of the floor.Finally,summarized the research of this paper,puts forward the problems and suggestions on floor vibration comfort of the design.