• KSCE Journal of Civil and Environmental Engineering Research
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• v.42 no.6
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• pp.837-842
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• 2022

The "Intelligent Railroad Alignment Design Program (ei-Rail) developed in 2013 has been adopted in the planning and the evaluation/validation of design results of oversea railroad construction projects. Target countries of Korean railroad industries requires the operating speed increase with alignment improvement and the double tracking of prevailing single track railroads as well as new railroad construction. This study is to develop an additional module for double tracking project of prevailing single track railroads in the ei-Rail. The developed method is based on the geometrics of prevailing railroad, and the definition of planned project determines the project cost based on the unit cost by work type, and provides the draft design of double track. The module was validated with a oversea case. It is then expected for oversea railroad double tracking project more efficiently in planning and the evaluation of design results.

• Journal of the Korean Society for Railway
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• v.15 no.4
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• pp.323-328
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• 2012

The purpose of this study is to develop automated structural design and analysis aided-program of aluminum extrusion carbody structures for railway vehicle. This developed program is called "AUTO-RAP" and could perform simultaneously structural design and verification for railway carbody structures made of aluminum extrusion independent of expertise and experience of design engineers. Design engineers are able to conduct the knowledge-based design by providing database of existing aluminum extrusion or user-defined function. The design verification is automatically programmed to evaluate its structural integrity according to Korean Railway Safety Law or Urban Transit Safety Law. In addition, this program could automatically generate an executable file of various commercial finite element programs such as ANSYS and ABAQUS and CAD files such as .stp and .iges by GUI environment applications using MFC(Microsoft Foundation Classes). In conclusion, it is expected to contribute to reduce product design cost and time of carbody structures aluminum extrusions in railway industry.

• Computational Structural Engineering
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• v.10 no.2
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• pp.34-39
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• 1997

BOXCAD Vㄷㄱ.2.00의 개발을 통하여 얻은 결론은 다음과 같다. 1) 다양한 설계조건 즉 설계차량하중, 토피, 지하수위, 사용재료의 강도 등의 변화에도 쉽게 자동화설계가 가능하도록 설계시스템이 개발되었다. 2) 개발된 설계시스템은 도로교 표준시방서와 콘크리트 시방서의 하중계수에 의한 방법을 모두 포함하고 있으며, 설계시방서에 따른 변화에도 신속하고 용이하게 대처할 수 있도록 개발되었다. 3) 개발된 본 설계시스템에 국부적인 기하조건, 설계하중, 구조세목만 보완하면 전력구 외에도 발전소의 배수 BOX구조, 도로 및 철도 횡단용 BOX구조, 지하차도 및 보도, 하수도 및 배수 BOX구조, 분류하수관거, 지하철 BOX구조 등의 자동화설계에도 작용할 수 있도록 시스템이 구축되었다. 4) 본 연구에서 개발된 자동설계시스템은 단면의 산정, 설계도면의 제작기능은 물론 설계 정보의 데이터베이스 기능이 있으므로, 실무에서 활용할 경우 설계도면 재료량 산출 및 설계정보의 효율적인 관리가 가능할 것으로 사료된다.

• Journal of the Korean Society for Railway
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• v.12 no.1
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• pp.81-87
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• 2009

Recent advances in computer technology have brought more dependency on software to railway signalling system. While much efforts have been reported to evaluate embedded software safety for railway signalling systems, not so much systematic approaches to evaluate software safety testing. In this paper, we propose a adaption of automatic software testing tool in terms of the design & coding standard for railway signalling system. The test items for the design & coding standard suggested in this study related international standards and MISRA-C. It is anticipated that it will be greatly helpful for the evaluation on the software for railway signalling system.

• 한국IT서비스학회:학술대회논문집
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• 2002.06a
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• pp.381-386
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• 2002

급변하는 정보화 사회에서, 철도 물류 정보 분야는 업무 자동화에 대한 인식 부족, 데이터 실시간 처리 불가, 열악한 사용자 환경 등으로 인해 활성화되지 못하였다. 이러한 상황을 극복하기 위해 인터넷을 기반으로 하며 차세대 인터넷 표준으로 알려진 XML을 적용한 철도 물류 정보 연계 시스템을 구축하였다. 구축된 시스템은 기존의 철도 물류 정보 시스템의 기능과 성능을 개선하여 사용자에게 안정되고 편리한 서비스를 제공하기 위한 구조로 설계되었다. 또한 기존의 2-tier 형태의 WEB 구조를 3-tier 형태로 하여 보안이 강화된 구조로 하였으며, 새로운 인터넷 표준으로 각광받는 XML Schema와 XSL을 적용하여 앞서 나가는 철도 물류 정보 시스템이 되도록 하였다.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.31 no.5
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• pp.267-274
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• 2018

For successful BIM settlement, it is a key technic for engineer to design structures in the 3-dimensional digital space and to work out related design documents directly. Lately many BIM tool has been released and each supports their 3-dimensional object libraries. But it is not easy to apply those libraries to design transportation infra structures that were placed along the route(3-dimensional line). Moreover, in case of design changes, it is so difficult to reflect those changes with the integrated model that was assembled by them. Because of they were developed without consideration for redundancy of parameters between objects that were placed nearby or were related each other. In this paper, a method to develop module for modeling and placing 3-dimensional object for transportation infra structures is presented. The modules are employed by a parametric method and can deal with design changes. Also, for a railroad bridge, through developing user interface of the integrated 3-dimensional model that was assembled by those modules the applicability of them was reviewed.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.1
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• pp.165-172
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• 2015

The appropriateness of railway route design is generally evaluated by the future value corresponding to the travel demand or benefit-cost analysis. These methods may have the limitation for the reasons that all the design alternatives cannot be considered, and the differentiation between the alternatives may not be significant because the alternatives are based on the strict basic scheme such as the design criteria. In addition, the cost varies by the design elements. In this study, all the design alternatives are considered with the automatized tool and the design criteria, and evaluated with the multi-criterion decision making method. The weight for each design element with the analytic hierarchical process may be helpful to derive more efficient railway alignment.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.34 no.6
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• pp.403-408
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• 2021

Currently, in the design process of civil structures such as bridges, it is common to make final products by repeating the process of redesigning, if the initial design is found to not meet the standards after a structural review. This iterative process extends the design time, and causes inefficient consumption of engineering manpower, which should be put into higher-level design, on simple repetitive mechanical work. This problem can be resolved by automating the design process, but the external analysis program used in the design process has been the biggest obstacle to such automation. In this study, we constructed an AI-based automation system for the bridge design process, including an interface that could control both a reinforcement learning algorithm, and an external analysis program, to replace the repetitive tasks in the current design process. The prototype of the system built in this study was developed for a 2-span RC Rahmen bridge, which is one of the simplest bridge systems. In the future, it is expected that the developed interface system can be utilized as a basic technology for linking the latest AI with other types of bridge designs.

• The Science & Technology
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• v.35 no.3 s.394
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• pp.30-31
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• 2002

부산대 정밀정형 및 금형가공 연구센터는 항공기, 자동차, 철도차량, 고속전철 및 전기전자 제품들의 부품산업이 경쟁력을 갖추게 하기 위해 1994년 3월 문을 열었다. 96년 영국 버밍햄대학에 현지 랩을 설치한 후 미국, 일본대학과도 연구협력을 하고 있다.

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.2679-2683
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• 2011

The purpose of this study is to develop automated structural design and analysis aided-program of aluminum extrusion carbody structures for railway vehicle. This developed program is possible to perform simultaneously structural design and design verification of aluminum extrusion profiles independent of expertise and experience of design engineers. Design engineers was able to design it using database of existing aluminum extrusion profiles or user-defined function. The design verification was programmed to evaluate its structural integrity according to Korean Railway Safety Law or Urban Transit Safety Law. Also, this program could automatically generate an executable file of various commercial finite element program and CAD files such as stp and iges by GUI environment applications using MFC(Microsoft Foundation Classes). In conclusion, it is expected to contribute to reduce product development time and improve product quality of aluminum extrusion profile and structures in railway industry.