차량-궤도-구조물 상호작용을 고려한 프리캐스트 플로팅궤도의 소음 저감 특성 분석

서지정보

ㆍ발행기관 : 한국복합신소재구조학회 ㆍ수록지정보 : 복합신소재구조학회 논문집 / 8권 / 1호
ㆍ저자명 : 최상현, 김민수, 조양희

목차

1. 서 론
2. 열차-궤도-구조물 상호작용 해석
3. 모델개선 및 진동해석
3.1 모델개선
3.2 진동해석
4. 음향해석
4.1 해석개요
4.2 해석결과
5. 결 론
ACKNOWLEDGMENT
REFERENCES

영어 초록

In this paper, a study on noise reduction characteristics of the precast floating track system, being developed as measures to mitigate noise and vibration of existing as well as constructing elevated railroad stations, is presented using numerical analysis. One of the most prominent sound analysis program, Virtual Lab., is utilized in investigating noise reduction performance of the precast floating track system, and structural velocity data, obtained from vibration analysis on a model-updated elevated railroad station considering vehicle-track-structure interaction, are used for the input of the sound analysis. The sound analysis is performed using the finite element method, and noise reduction performance before and after installing the precast floating track system is compared at three enclosed areas in the Daecheon Station, selected as a representative of elevated railroad stations in this nation. From the comparison result, it is seen that the precast floating track system can decrease noise by average of 5dB∼8dB when the Saemaeul train passing through the station and 10dB∼15dB when the KTX train passing through. Also, the noise reduction characteristics is different depending on the type of train and the distance from the track.

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