• Proceedings of the Computational Structural Engineering Institute Conference
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• 2000.10a
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• pp.361-368
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• 2000

This paper demonstrates how nonlinear soil behavior in a soil-structure interaction system can be realistically incorporated by using a hybrid method in a nonlinear time-domain analysis. The hybrid method employs a general-purpose nonlinear finite element program coupled with a linear SSI program for the unbounded layered soil medium In order to verify the validity and applicability of the hybrid method, nonlinear earthquake response analyses are carried out for the Hualien free-field problem, in which the ground and underground accelerations were measured during several earthquake events, and for a 2-D subway station. It is found that the nonlinear earthquake responses predicted for the Hualien free-field using the hybrid method compare very well with the observed responses whereas the subway station example gives reasonable results.

• Proceedings of the KSR Conference
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• 2003.05a
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• pp.343-348
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• 2003

As one of countermeasures for vibration and noise source which come from train operation in subway system, the heavy-weighted tunnel structure and the low-vibration track design have been adopted. In recent the low-vibration concrete track have been constructed to enhance the maintenance effectiveness as well as the reduction of vibration. This paper is explaining and evaluating of the characteristics of vibration and its effects comparing to tile ballast track, concrete track, and full surface supported floating slab track installed on Express bus terminal in Seoul subway No. 7 line.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.655-659
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• 2005

The environment. of electric railway has, included both fast and slow load variation, which may occur in the office or maintenance factory or running electric train. This paper investigated flicker indices according to voltage fluctuations on three different situations; The base office in new subway in the daytime and night time, inside of electric train running in conventional subway. And also the variations of harmonic frequencies(2nd, 3rd, 5th) with rime were measured at the same time. Flicker index is a good tool for evaluating the voltage fluctuation quantitatively and show some relationship with even harmonic frequencies produced by the voltage fluctuation when the electric train is running on the railway.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.269-274
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• 2008

The Seoul subway is acting the center of public transportation after the opening of the first line on August 15, 1974. and the subway line of the DC traction system is running and building to the ninth line. However, the main insulation parts used in overhead contact line are now imported from overseas products. Therefore, this paper considers domestic manufacture technology, supply easiness and economic effectiveness of insulation products and reviews the safety of support insulator used in rigid conductor line, stem insulator used in movable bracket and AC/DC different phase section insulator that localization development is necessary.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.287-288
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• 2019

본 논문에서는 서울 열린 데이터광장에서 제공하는 오픈 API를 사용하여 지하철의 편의정보를 제공하는 어플리케이션을 구현한다. 기존의 지하철 어플리케이션의 불편함을 해소하기 위해 지하철 편의 시설 정보를 중심으로 제공하는 어플리케이션을 제안한다. 제안한 어플리케이션은 편의시설 중심으로 제공하여 사용자가 긴급할 때 화장실을 포함한 편의시설을 기존 어플리케이션 보다 신속하게 찾을 수 있는 것을 목적으로 한다.

• The magazine of the Korean Society for Advanced Composite Structures
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• v.1 no.1
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• pp.62-70
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• 2010

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2003.10a
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• pp.359-366
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• 2003

• Proceedings of the SAREK Conference
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• 2004.06a
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• pp.246-246
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• 2004

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.499-501
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• 2002

현대 산업이 무선인터넷 산업구조, 이동통신 서비스 사업자 중심의 무선인터넷 사업 패러다임으로 변화되어 소형 임베디드(Embedded) 장비를 이용하여 장소의 제약없이 다양한 응용프로그램의 사용과 인터넷의 접속이 가능하게 되었다. 이에 본 논문에서는 플랫폼에 독립적인 자바기술을 이용하여 임베디드장비를 이용하여 지하철 운행시간 검색이란 응용프로그램을 구현하였다.

• Proceedings of the KSR Conference
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• 2006.05b
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• pp.115-120
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• 2006