| With the rapid development of sports,economy and culture in China,the 2008 Beijing Olympic Games,2010 Guangzhou Asian Games,2014 Nanjing Youth Olympic Games and other major international events were held in China,and the rise of stadium construction boom in various places.At the same time,along with the improvement of the living standard of the masses,stadium buildings gradually turn from special functions to complex functions.People’s demand for the use of stadium buildings is not only to meet the needs of physical exercise,but also to include a variety of recreational activities.Poor sound environment of gymnasium competition hall will affect athletes’ competitive level and people’s performance experience.At the same time,due to the characteristics of large scale,wide span and large space volume of gymnasium construction,it is more likely to lead to acoustic problems of gymnasium competition hall.Therefore,how to improve and optimize the sound environment of gymnasium competition hall to meet the needs of multifunctional use has become an issue that cannot be ignored.Due to the high use frequency and wide distribution of small and medium-sized gymnasiums,the problem of acoustic environment is more likely to be ignored,which is representative and typical.The competition hall is the core space of the stadium building,carrying different use functions.The acoustic environment is crucial for the multifunctional use of the competition hall,so this paper takes the acoustic environment of the competition hall in small and medium-sized gymnasiums as the research object.First understand the relevant theories of acoustic environment,according to the use characteristics of small and medium-sized gymnasium,determine the acoustic evaluation index early decay time EDT and language definition D50,on the basis of the theoretical comparison and analysis of the use characteristics of different functions of the gymnasium gymnasium.It is determined that the factors affecting the acoustic environment of the competition hall are the plane shape,ceiling selection and interface factors.In order to understand the current situation of the acoustic environment in the competition hall of the stadium,field acoustic measurement was carried out in the stadium of Xi ’an University of Architecture and Technology,and questionnaires were issued.In addition,the plane and section parameters of 47 typical stadium halls are analyzed.The Odeon acoustic software is determined to be the acoustic environment simulation experimental software,and the reliability of the experimental software is determined according to the comparison between the acoustic environment measured data and the Odeon simulation data.Taking the competition hall of Yangling Stadium as the basic model,on this basis,the influence of the plane shape,ceiling form,ceiling height,interface material,sound absorption position and interface structure on the acoustic environment of the competition hall is studied by the control variable method.Finally,the influence of different factors on acoustic environment is determined according to the simulation experiment data.Based on Odeon acoustic environment simulation,this paper obtains the influence rules of different plane shape,ceiling selection and interface factors of the competition hall on the acoustic environment,and puts forward corresponding design strategies from three aspects: multifunctional use of the competition hall,the type of the competition hall and the interface of the competition hall.It provides the acoustical design ideas for the competition hall of the new gymnasium,and also hopes to improve the designers’ attention to the acoustic environment of the competition hall of the gymnasium to a certain extent. |
