• Title/Summary/Keyword: 열차진동

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Performance Improvement of VHF Train Radio Transmitter by Using Vibration-Proof Pads (방진패드를 이용한 VHF 열차무선 송신기 특성 개선)

  • Kim, Sung-Dong;Koo, Kyung-Heon
    • Journal of Advanced Navigation Technology
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    • v.13 no.4
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    • pp.475-481
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    • 2009

  • This paper focuses the performance improvement of the train radio system (TRS) supporting the safe and accurate operations. The causes of troubles and the performance drift in TRS have been analyzed and measurement indexes have been selected. Frequency shifts of transmitters causing from train vibrations have been shown, and the improvement of frequency stability has been confirmed by use of vibration- proof pads.

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Performance Evaluation of Laminated-Tempered Glass as a Component of Noise Barrier on Metro Railway Elevated Bridge Against Train Induced Vibration and Wind Load (지하철 고가교 접합강화유리 방음판의 열차진동 및 풍하중에 대한 성능평가)

  • Kim, Suk-Su;Lee, Ho-Beom;Song, Jae-Ho
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.21 no.5
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    • pp.30-41
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    • 2017

  • Types of noise barrier installed for noise attenuation are largely divided into noise-absorbing format and noise-proofing format. In these days, installation of transparent noise barrier is general trend to solve problems that hinder sunshine and landscape. Some kinds of transparent boards are used to one of components in noise barriers, but in some cases, less transparency and worse pollution due to yellowing phenomena, and severe material deformation are to harm the urban aesthetics Therefore laminated-tempered glass board in that yellowing phenomena does not occur can be replaced as a transparent one to secure those shortcomings. In this paper, the structural safety against train induced vibration and the resistibility to wind load are analyzed for laminated-tempered glass system as a component of noise barrier installed on Metro railway elevated bridges. Also the appropriateness is evaluated through flexural bending performance test, compressive strength test, modulus of elasticity tests, and impact test for the system or the glass material itself. All of these processes are intended to present the deployment of logic to evaluate the adequacy for the system.

  • https://doi.org/10.11112/jksmi.2017.21.5.030 인용 PDF KSCI