A: Research On Noise Control Of Downgoing Main Line Railway Stations

With the "High-speed Rail era", in order to adapt to the trend of the times and therequirements of city development, large-scale integrated transport hub set city rail transit,intercity railway, high-speed railway, city public transport system as a whole has become amainstream form of the future development of the railway transport. Foshan train stationas a large-scale comprehensive transportation hub, a special form of line type in thestreamline form, is without precedent in china. At the same time, the special form in thegiven Fo shan train station "airport" flow organization form, at the same time also broughta lot of problems to the noise control station. This paper aims to study the noise control Foshan train station the line type of the station, which raises the general theory andsuggestion to prevent type station line.Firstly, the paper carries on the analysis to the acoustic problems existing in the Foshan train station as the representative of the next station is possible. The main building inthe space above the noise of train station speed have great influence on the waiting room,ticket office, commercial space and function space; each functional space caused by thehuge volume, reverberation time is too long, the mean free path of sound propagation willobviously increase. All these will lead to the broadcast sound vague, influence to thepassengers ride, waiting very noisy; moreover the noise generated by trains are spread bysharing space, cause resonance.Then, for each space (such as the intercity line waiting hall, waiting hall, passengerdedicated line station ticket hall hall, wide things, equipment room etc.) acousticevaluation analysis of interior decoration materials; analyzing the results in the acousticevaluation, the spatial modeling, analysis and Simulation of the acoustic computersimulation, the main acoustic characteristics, draw voice, intuitive sound particle tographics. According to the acoustics simulation results, such as reverberation time is toolong, structure column of source propagation barrier characteristics, puts forward thecorresponding measures such as ceiling with metal micro perforated panel, wall surfaceusing acoustic board after filling50thick wool and other measures to strengthen theabsorption characteristics of building structure. Finally, the main noise source (noise of pump unit, pump and air conditioning andrefrigeration pipes, cable pipe vibration isolation design and sound reinforcement system)study. The measures of reducing the noise effectively set the isolator, and the noisereduction effect is analyzed.Through a detailed analysis of the above several aspects, and based on the researchresults, put forward some suggestions and corresponding measures of noise control. Toensure passenger can communicate freely during the Fo shan train station waiting room,quiet and comfortable waiting, and hear the train broadcast information. Create a goodenvironment for the sound Fo shan train station.