• Title/Summary/Keyword: railroad noise

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A Study on Curve Running Characteristic of DMT Freight (DMT 화차의 곡선부 주행특성에 관한 연구)

  • Lee, Seung-Il;Eom, Beom-Gyu;Lee, Hi-Sung;Lee, Young-Yeob;Kim, Yong-Won
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.20 no.4
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    • pp.373-380
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    • 2010

  • An interest is increased of environment and energy so, importance on railroad high energy efficiency is magnified. And after Gyeong-bu High speed rail is completed, share rate freight transportation of railroad is expected to be gradually increased due to expand investment for railroad and operate mainly freight transportation on convention line. Therefore a research on DMT freight cars is necessary under like this situation. In paper, we developed analysis model for DMT freight car and DMT freight was analyzed numerically using VI-Rail in each condition of railway having different curve and carried out vibration analysis on curving using developed analysis model. And we carried out test on driving stability follow changing curve radius then measure against UIC code 518.

  • https://doi.org/10.5050/KSNVE.2010.20.4.373 인용 PDF KSCI

A Study on the Sound Insulation Performance of the Composite Panel for Railroad Vehicle (철도차량용 복합 내장 패널의 차음성능에 관한 연구)

  • 김봉기;김재승;황병선;이상진
    • Proceedings of the KSR Conference
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    • 2002.10a
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    • pp.182-187
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    • 2002

  • Since most of main noise sources of the railroad vehicle are transmitted to the passenger's ear through the vibration of the panel, the insulation performance of the panels should be high enough to protect the passengers from the noisy environment. Specifically, the composite materials which are generally used for reducing the weight of the vehicle compartment have the low insulation performance, noise control actions should be taken appropriately by considering the insulation performance of the panels. In this study, the insulation performances of the inner/outer panels were evaluated and the contribution of the aluminum door was estimated compared to the composite panels. The results can furnish an indepth understanding of the insulation characteristics of the panel of railroad vehicle.

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Environmental Impact Assessment and Environmental Management of Railways (I) (철도사업 환경영향평가와 환경관리(I))

  • Lee, Hyun-Woo;Lee, Young-Joon;Park, Young Min;Lee, Jeongho;Yoon, Mikyung
    • Journal of Environmental Impact Assessment
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    • v.13 no.6
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    • pp.295-305
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    • 2004

  • After the Rio declaration on environment and development in 1992, developed countries are undertaking "environmentally sustainable transportation (EST)" projects. To meet the needs for EST, current transportation policies in Korea are rapidly reforming and one of its concerns is modernizing and upgrading railway freight system. Planning new railroad construction projects is increasing and subsequent environmental impact assessment (EIA) demands improvements, especially in both the EIA and decision making systems. In this paper, we discuss the present status of EIA for railroad construction projects, especially, by analyzing the EIA documents for the last six years. The EIA for railroad construction projects accounts for only 4.9% of total 918 project EIAs during 1998-2003, and the portion is gradually increasing. Major environmental concerns for EIA in railroad construction projects were geomorphological and ecological changes, protection of rare organisms, air pollution, water pollution, waste management, and noise, etc. We compared characteristics of environmental impacts of railroad construction with those of vehicle road construction, based on environmental and construction-planning indicators appeared in Environmental Impact Statements. Railroad construction usually requires longer tunnels and bridges for a given length than those for vehicle road construction. In addition, the amounts of geomorphological and ecological changes (road-cutting, embankment, devegetation, etc.) in railroad construction were generally less than 50% of those in vehicle road construction. To develop environmentally friendly railway systems, monitoring studies for environmental impacts of railroads such as habitat fragmentation and road kills, dispersal of alien plants, tunnelling effects on groundwater and vegetation, and noise impacts are highly recommended.

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Noise Test of High-speed Train at 300km/h (경부고속철도 300km/h 주행시 소음 평가)

  • 나희승;김준엽
    • Proceedings of the KSR Conference
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    • 2002.05a
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    • pp.452-457
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    • 2002

  • High speed railroad noise is one of the main causes of environmental impact. An estimate of the relevant noise levels is usually required in order to evaluate the noise barrier and the anti-noise trailer. This paper introduce the test procedure and the estimate for HST noise. The aim of this is to measure, by means of a test, the level of acoustic pressure present during the passing of a KTX(Korea Train Express), in order to satisfy the contractual requirements and the noise criteria. A number of measurements are carried out in order to estimate noise impact by HST along test track.

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