• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2005.05b
• /
• pp.79-84
• /
• 2005

고속철도는 한번에 1천명에 달하는 승객을 태우고 시속 300km를 넘는 고속으로 주행하는 만큼 성능과 안전에 대한 철저한 사전 검증이 필수적이며, 특히 새로운 차량시스템의 개발은 철저한 성능검증 및 안전성을 확보하는 시험평가 과정을 반드시 거쳐야 한다. 본 논문에서는 최고속도 350km/h인 한국형 고속철도 차량시스템 개발사양의 성능요구 조건을 입증하기 위한 시험으로서, 핵심 개발품 단위별 구성품 시험, 개발품 단위간의 조합시험, 차량에서의 기능 동작 확인을 위한 완성차시험(단차시험 및 편성시험)및 전기신호 및 선로구축물 시스템과의 적합성 및 연계성을 확인하는 시운전 시험으로 구분하여 한국형 고속철도 차량시스템의 성능시험 체계 및 성능시험 기준(안)의 개발 내용을 소개하고자 한다.

• Journal of the Korean Society for Railway
• /
• v.5 no.2
• /
• pp.34-40
• /
• 2002

21세기 무한경쟁시대에 대비하여 국가산업의 경쟁력제고는 물론 지역의 균형발전에 기여코자 추진되고 있는 단군이래 최대 국책사업인 경부고속철도 건설사업은 오는 2004년 개통을 목표로 활기차게 추진되고 있다. 한국고속철도건설공단은 '94.6.14 프랑스 알스톰사(한국 TGV 컨소시움)와 체결한 경부고속철도차량 계약목표를 우수하고 완벽한 성능의 고속열차 도입과 함께 선진기술을 이전받아 국내 철도 기술수준을 향상시켜 고속 철도 기술 선진국으로의 도약에 그 초점을 맞추었다. (중략)

• Journal of the Korean Society for Railway
• /
• v.12 no.1
• /
• pp.65-71
• /
• 2009

The pressure transient inside the passenger cabin of high-speed train has been assessed using computational fluid dynamics (CFD) based on the axi-symmetric Navier-Stokes equation. The pressure change inside a train have been calculated using first order difference approximation based on a linear equation between the pressure change ratio inside a train and the pressure difference of inside and outside of the train. The numerical results show that the pressure change inside the new Korean high-seed train passing through a tunnel of Seoul-Busan high-speed line at the speed of 330km/h satisfied well the Korean regulation for pressure change inside a passenger cabin if the train is satisfying the train specification for airtightness required by the regulation.

• Journal of the Korean Society for Railway
• /
• v.15 no.2
• /
• pp.104-108
• /
• 2012

All of the Korean high speed train windows have been imported from abroad up to now. In this paper, the air pressure endurance test device for high speed train windows was studied and developed. This test device can create air pressure variation similar to train running real condition and carry out pressure endurance test according to international standard. Henceforward, this test device will be useful for domestic production of high speed train windows.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.35 no.4
• /
• pp.341-346
• /
• 2011

In the development of high-speed trains, ride comfort is an important factor that determines the quality of the train. In this study, the ride comforts of high-speed trains with rigid and flexible car bodies were evaluated. The rail irregularity is used as an exciting source of the car-body bounce motion. The complex extruded structures of the car-body are modeled as shell structures using the calculated equivalent stiffness of the flexible model. The numerical results show that the ride of the rigid-body model improves as the speed increases, which is unreasonable. In contrast, the relationship between ride comfort and speed in the case of flexible-body model is reasonable. Thus, it is confirmed that the flexibility of the car body needs to be taken into consideration while fabricating a high-speed train.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2005.05b
• /
• pp.74-78
• /
• 2005

최고속도 350km/h의 한국형 고속철도시스템은 안전보장과 사고예방을 위해서는 시스템 위험분석에 근거한 안전검증과 성능확인이 요구된다. 본 논문에서는 고속철도 차량시스템 개발을 위한 시스템 개발요건과 위험도 분석에 근거한 안전성능요건을 근거로 하여, 차량시스템에 대한 일반 안전요건, 구조적 안전요건 및 핵심 장치별 안전요건으로 구성된 한국형 고속철도 차량시스템의 안전설계 요건분석 결과를 소개한다.

• Journal of the Korean Society for Railway
• /
• v.16 no.1
• /
• pp.14-19
• /
• 2013

Because excessive interior noise when riding a high-speed train leads to annoyances, fatigue and stress for passengers, interior noise reduction methods should be considered. In particular, a high-speed train operated in various operation environments, and in South Korea, these include open fields and tunnels. Therefore, a specific study about changes in interior noise characteristics according to different environments is necessary. For this reason, the interior noise characteristics on a KTX train and on the KTX-Sancheon train were analyzed from noise measurements using microphones in this paper. Vibrations on the axles, bogies and floor were also measured, are these area are structural paths for interior noise. From this research, the interior noise characteristics according to the driving speed were deduced and the effects on interior noise by driving environments such as open fields and tunnels were investigated. Furthermore, the effect on interior noise by axles, bogies and floor vibrations were analyzed from a transfer function analysis.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.37 no.6
• /
• pp.1025-1032
• /
• 2017

In this paper, the level of service (LOS) is defined for high-speed railway links and rolling stocks. Based on this LOS, how to manage high-speed railway facility is also suggested. The LOS is divided into 6 levels from A to F. The measurement of effectiveness (MOE) for railway links is derived from the relationship between a total delay time and a railway link utilization ratio. Another MOE, volume over capacity (V/C), is also proposed. On the other hand, the LOS for high-speed railway rolling stocks is based on the density of people in a rolling stock. Above all, LOS D is defined to the total number of seats. Then, LOS A is 50% of the LOS D, LOS B is 70% of the LOS D, LOS C is 90% of the LOS D and LOS D~F is defined as the maximum seats and standing people at the level of each. Finally, a method to manage high-speed railway links and rolling stocks is proposed in order to keep the level of service at the target by the government.

• Journal of the Korean Society for Railway
• /
• v.12 no.4
• /
• pp.465-471
• /
• 2009

In this paper, a relationship between the noise and vibration of a high-speed train's wheelset is examined by using time-varying frequency analysis with random data analysis which together contributes to a reduction in the number of experimental running. The noise and vibration of the wheelset is mainly caused by an interaction between the wheel and railway which shows in non-stationary characteristics. For the analysis, they are measured by some microphones and accelerometers, and those signals are post-processed by time-varying frequency analysis with random data analysis. From the analysis, their methods are useful for analyzing the noise and vibration of high-speed train's wheelset.

• Proceedings of the KSR Conference
• /
• 2001.05a
• /
• pp.257-264
• /
• 2001

국내 고속철도 강합성 교량이 경부고속철도 8-2공구에서 처음으로 시공완료 되었다. 그동안 수년간에 걸쳐 고속철도 교량시공에도 불구하고 강합성 교량이 적용되지 못했던 것은 설계 기술적인 면과 더불어 재료 적인 면에서 국내여건이 성숙되지 못한 요인이 크다고 보여진다. 본 고에서는 기 설계된 PC BOX교량중 지형여건상 강합성교량이 적합한 교량구간을 제시하였다. 또한 강합성 교량의 설계기술적인면 중 특히 중요한 한국형 TGV차량의 동적 하중의 적용과 그에 따른 구조물 거동의 평가를 1＠50 교량에 대한 8-2공구 사례를 통하여 논의하였다. 강합성 단면은 단순 2주형 주형거더(double I beam)이며 플랜지 두께는 최대 80-100mm가 적용되어졌다. 본 단면에 대한 HL차량하중등에 대한 정적해석을 통하여 관심이 되고 있는 플랜지등의 응력 검토결과를 보여주었다. 아울러 정적해석과 동적해석의 결과치를 비교하여 국내 시방서에 제시된 고속철도 HL차량하중에 대한 평가도 이루어졌다. (중략)