Analysis Of Noise Environment Of Building For Vehicles’ Preparation In A Transportation Hub In Changsha

Noise environment has increasingly become an important factor in the evaluationof the built environment, building acoustic environment is an important greenbuilding rating bonus item. The noise damage is many-sided, it can not only result inauditory fatigue and hearing loss, cause a variety of diseases, but also affect people’snormal work and life, lower labor productivity, particularly strong noise can damagebuildings, affect the normal operation of the equipment, so we have to pay attention tothe impact of noise on the built environment.With the development of rail transportation, the major domestic and foreignmainly research noise environment of railway transportation hub, such as the trainwaiting room and platform, the noise environment of road transportation hub is ofteneasy to be ignored, especially in the vehicle preparation area, vehicular traffic is alsovery frequent, the noise generated by the vehicle at the start and the stop time has agreat impact on the local built noise environment. The transportation hub in the cityof Changsha is a set of road passenger transport, rail transport, urban public transport,social vehicular traffic and other integrated transportation hub, it has a huge trafficand passenger volume. This paper choose the building for vehicles’ preparation of atransportation hub station in Changsha City for the study, analysis and simulate thenoise environment of this building types.The paper targeted floors for different uses and different architectural forms,based on eight different frequency noise values, defined sound absorption coefficientand transmission loss of building materials with RAYNOISE software, added soundsources of air conditioning, ventilation, equipment, vehicles and personnel, simulatednoise environment for the building of vehicles’ preparation, then concluded the noisevalue when open and close forms adopted, and obtained detailed description of thenoise distribution of each storey of the building for vehicles’ preparation. At last thepaper came to the conclusion that the indoor noise environment of the building forvehicles’ preparation of the transportation hub in Changsha city complies with theNC35curve’s requirements as a whole, that the sound pressure level of eight octaveband frequencies at63,125,250,500,1000,2000,4000,8000Hz are not more than67,57,49,44,40,37,35,33decibels. The maximum total A sound pressure level ofindoor is not more than59.54dB, even if the outdoor noise impact has been taken into consideration, it will also meet the second class requires of the environmentalstandards for the cities’ noise. The average noise value of opened architectural formsis4.14dB less than that of the enclosed building structure.