탄성지반 위에 놓인 보-기둥 요소의 총포텐셜 에너지로부터 변분원리를 적용하여 지배방정식과 힘-변위 관계식을 유도하였다. 4계 상미분방정식 형태의 지배방정식을 4개의 변위 파라메타를 도입하여 1계 연립미분방정식 형태의 선형 고유치 문제로 전환하고, 힘-변위 관계식을 적용하여 엄밀한 정적, 동적 요소강성행렬을 유도하였다. 직접강성법을 이용하여 구조물 강성행렬을 구하고, 2차원 보-기둥구조의 엄밀한 좌굴하중과 고유진동수를 구하고, 결과를 유한요소해와 비교함으로써 본 연구의 타당성을 검증하였다. 이러한 엄밀한 해석방법은 Hermitian 다항식을 형상함수로 도입하여 요소의 강성행렬을 산정하는 유한요소법과 비교할 때, 요소의 수를 대폭 줄일 수 있는 장점이 있다.

In this study, for the rapid transit of urban and metropolitan railways, the installation of passing loop tunnel in the underground section of urban railroads in operation is reviewed. Unlike road tunnels, it is difficult to secure working spaces because the railwau tunnel is very narrow, impossible to bypass, and related facilities such as overhead wire exist. In addition, urban railways have limitations that must be carried out without blocking the existing trains or construction within four hours when the trains are not running. Therefore, in this study, the construction plan of passing loop tunnel during railway operation for the rapid transit was reviewed.

This paper has developed a Derailment Containment Provision(DCP) between rails to prevent derailed accident of the train. And developed DCP under impact loading was analytically evaluated using LS-Dyna. This paper was simulated using Mat_72R3 and Mat_CSCM for concrete material. To modify the developed DCP, this paper was suggested suitable and reasonable analytical concrete material model.

Depending on the speed up of railway noise problem has become increasingly serious. In general, under the same conditions when the vehicle speed is 300km/h in a 400km/h increases, it is known that an increase in the noise level of 6 to 7dB. Railway Noise can be reduced by improving the vehicle and the track system. Also, the noise barrier and sound absorbing block may be a valid alternative to reduce railway noise. Here we propose a construction method of absorbing blocks are removable to allow maintenance.

To manage the data measured from Honam high-speed railroad(HSR) infrastructure(environmental noise reduction structures, track structures, catenary system), we are trying to establish an integrated database through analysis of the developed infrastructure technologies and standards, construction of prototypes on the fields and evaluation of infrastructure performance according to the increment of train speed. In this paper, integrated monitoring center for management of measured data is suggested.

Recently, Advanced automated infrastructure measurements have been made in the Honam high speed railway test-bed. In the future, Real time measurements will be the common based on these technologies. Here, we looked at the domestic and international trends and utilizing the inspection method of Railway Structures using self-powered sensors and wireless network technologies.

In this paper, the filed test procedure for evaluating the performance of track structure for additional Speed-Up test on Test-Bed Section(KP 100∼128km Osong starting point). The behavior of track system corresponding the speed up of train will be identified by the analysis of the measured data.

Needs for a new technologies of infrastructure systems arose, following the development of next generation EMU(Electric Multiple Unit) train with maximum speed over 400km/h. For high-speed operation tests of the new EMU, a high-speed railway infrastructure test-bed was constructed in a 28km long section of the Honam High-speed Railway. Diverse sensors and monitoring system was installed for continuous monitoring of the railway. Due to such effort, further demands and needs of the integrated monitoring system was derived in a more comprehensive and long-term perspective.

In Korea, Because of excellent bending and torsional rigidity, PSC Box girder types have been applied to high-speed railway bridge in the most of the construction sites. But the introduction of a new structure types and materials is required in terms of diversity of landscape as landmarks. In this study, the latest high-speed rail bridge technology is investigated in terms of functionality and landscape.

그동안 우리나라는 화산재해에 대해 비교적 안전한 지역으로 인식되고 있었으나, 최근 백두산 지역의 다양한 화산분화 전조현상 발생 등 화산재해 위험성을 제기하는 전문가의 의견이 증가하고 있다. 이에 본 연구에서는 향후 발생가능한 화산재해에 대해 신속·정확하게 대응하기 위한 공간정보 기반의 화산재해대응시스템 개발방안을 제시하였으며, 실제 파일럿 시스템을 개발하여 상용화 시스템 개발을 위한 기반을 마련하였다. 향후 화산재해대응시스템이 소방방재청 국가재난관리시스템(NDMS) 체계에 탑재되기까지는 추가적인 연구 및 시스템 보완이 필요하나, 해당 시스템이 방재업무에 실용화 된다면 향후 백두산을 비롯하여 우리나라 인근지역에서 발생하는 화산재해로 인한 피해를 최소화 할 수 있음은 물론, 인도네시아를 비롯한 중남미 지역 등 화산재해발생 국가들까지의 수출도 가능할 것으로 기대된다.

In this study, it explains briefly the test procedure for evaluating the performance of track and bridge in test-bed section of Honam High-Speed Railway.

After test track was constructed in 2009, maintenance works have performed for 14 months to check the stability of station for bimodal tram. Consequently, station’s main body, infrastructure system as gate and ticket machine, passenger safety system, service information and guidance system, and operation management system have no problems except for minor problems such as main body’s acrylic products falling.

In 2004, 300km/h speed of high-speed rail was introduced in Korea. In recent years, policies and technologies are being developed with the goal of increased speed higher than 400km/h. HEMU-430X vehicles have been developed during the test, and technology-related infrastructure is under development. In addition, studies are underway for improving the speed of 500km/h or more. In more than 400km/h, track irregularity due to bearing force of track is increasing rapidly. In this study, applicability for the track structure with steel sleeper, to investigate alternatives that can reduce bearing force of track and maintenance costs.

The construction of underground rail crossing is effect on railroad infra-structure and rail safety. So various methods have been suggested to construct through the infra-structure on the railroad. This paper treats the results of studies for safety of temporary bridge using a commercial FEM program, RM which is operated based on data measured on a sites. Also it was carried out optimal section considering characteristic of dynamic which reflects actual load for speed cases.

After test track was constructed in 2009, maintenance works have performed for 14 months to check the stability of dedicated lane. Consequently, we get to know to keep the bleaching of signs and the crack of road surface in mind for effective maintenance of the dedicated lane hereafter. And dedicated lane with natural lawn is expected to decrease the heat island effect of conventional road if constr

Recently, power distributed high-speed train with 430km/h(HEMU-430X) has developed in korea, 2012. However, the development of the train alone can not achieve the speed of high-speed rail system. So it needs the development of infrastructure system. In this paper, the project named “Application & technology development of high-speed rail infrastructure for 400km/h-class” being promoted in december 2010 will be introduced comprehensively.

본 연구에서는 현재 신교통 수단으로 연구 중인 바이모달 트램의 전용 교량을 개발하는데 있어 바이모달 트램 운행 특성을 고려한 실물크기의 중공화된 프리캐스트 바닥판을 새롭게 설계․제작하여, 신뢰성 있는 비선형 유한요소해석 프로그램(RCAHEST)을 통한 해석 결과와의 비교․분석을 바탕으로 적합성과 타당성을 검증하였다. 하중 재하 위치를 변수로 실험을 수행하여 설계 하중에 비하여 약 8∼9배의 충분한 안전율을 확보하고 있음을 확인하였으며, 본 연구에서 적용한 재료적 비선형성을 고려한 비선형 유한요소해석 프로그램을 통한 해석 결과 역시 콘크리트의 균열 발생 및 철근의 항복을 포함한 파괴시까지의 극한 거동 특성을 비교적 적절히 평가하고 있음을 알 수 있다.