The basic design is a plan to create Dongdaegu Station as part of the square in front of the Dongdaegu Station expansion project. This includes a landscaping plan in connection with a synaptic complex transit center development plan. KTX Dongdaegu Station Square is in the center of the complex, and transit passengers are transferred to the best routes to the station extension, with a variety of KTX Gyeongbu transportation routes planned. Located in the heart of the city, the square should be expanded based on the use of past railway stations to function as a city square. The basic design for the KTX Dongdaegu Station Square involves a sense of symbolism, place, public space, and environmental consciousness. First, it highlights the symbolism of Daegu’s identity in planning the concept, and it establishes an eco-friendly nature, taking into consideration the environmental characteristics of Daegu. Second, planning the space from past-oriented public transport secures the functions and features of the pedestrian plaza in the urban context. In particular, it plans to incorporate environmentally friendly low-carbon planning and purification forest plans. Distant, middle, and close-range views are established in accordance with the landscape plan, including three forest conditions, taking into account the nature of the three-dimensional space and establishing a planting plan. Third, a packaged integration plan is established for the enclosure, decoration, and directional limitation of the transportation square, which is located in the city forest and grassy yard between the square and the main road to ensure the direction and connection with the facilities and the symbolic sculptures. This plan can serve as a new model for the planning of railway station squares, turning them into cultural complexes in the public space of the city.

Resonance occurrence conditions are explored by performing dynamic interaction analysis of arch bridge and KTX trains. The target bridge is a 3D tied-arch bridge having span length of 120m. KTX trains consist of two power carriages, two power and passenger carriages and sixteen passenger carriages. When KTX trains run on the target bridge with the uniform speed of 100 to 500km/h, the dynamic responses of the bridge induced by moving trains are obtained from railway arch bridge-train interaction analysis. Two resonance conditions are presented and whether the resonance phenomena occur or not at the suspicious resonance velocities is rigorously investigated through bridge deflections and accelerations and their FFT analysis.

It is commonly recognized that railway is one of the representative transportation and it offers public service based on strategies for being rapid, automation, safety. Since the opening of high speed railway, 3-hundred-million people have used it and acknowledged its efficiency. However, derailed accident at Kwangmyeong station in February, 2011, frequent malfunction of KTX-Sancheon, and accidents by engineer's careless fault damaged on credibility of safety, Especially, spreaded accidents through social networking service by cell phones amplified anxiety of public, being criticized by the press. This study analyzed statistics of past accident and cases of passing-by accident, and surveyed 152 KTX captain engineers about their recognition of the accident by careless fault and experiences of possibility of occurrence for preventing engineer's careless fault and restoring trust According to the analysis, engineers worry about responsibility and disadvantages related to the accidents for the most, and they are nervous about malfunction for the second most. This study presents prevention methods regarding the result. First, it is required to improve mental stability and concentration on their work, secondly, advanced ability to cope with malfunction or error through repetitive education and training are required to increase confidence, and for the last, improvement of operational supporting system such as ATP, GPS to prevent errors by human factors. Improvement of the system is expected to lead engineers to prevent careless fault and regain the reputation of railway.

The objective of this study is to assess a level of microbial contamination in the KTX. Investigation sites in the KTX were cabin, gateway, toilet and passenger seat. It was found that the mean concentrations of airborne bacteria and fungi were 157 CFU/m³ and 84 CFU/m³ , respectively, in all of the investigation sites of the KTX. They did not exceed the domestic standard (800 CFU/m³ ) for airborne bacteria and the guideline (150 CFU/m³ ) for airborne fungi recommended by WHO. Mean levels of bacteria and fungi distributed in passenger seat were 2.6×10⁵ cfu/m³ and 3.7×104 cfu/m³ , respectively. The predominant genera identified in the KTX were Bacillus, Corynebacterium, Staphylococcus and Micrococcus for bacteria and Aspergillus, Cladosporium and Penicillium for fungi, respectively. Based on identification result, the profiles of airborne bacteria and fungi in the KTX was wholly similar to those of bacteria and fungi distributed in the passenger seat.

In January, 2005, the "Railroad Safety Act" was presented, preparing the systematic equipment that allows several railroad operators to consider the railroad safety issue, and each of the railroad operative institutions accepted such situation that the construction of the emergent system of coping, resulting in the construction of the emergent system of coping with the railroad fire accident through the relevant study to improve the railroad security efficiency against fire. This study tried to present the on developing the emergent educational program for coping with the KTX fire accident, which is distributed to the spot, to the railroad emergency staff for improving the railroad security efficiency against fire through the education of systematic and efficient emergent countermeasure procedures against fire accidents the fire accident in KTX.

This study suggest a way to improve duty process of KTX(Korea Train Express) high-speed train driver. A new operating system which based on safety was introduced to operate high-speed train which travel above 300km/h on the high-speed railroad but below 200km/h on the general railroad. There were some studies on the operation of high-speed train which travel on the high-speed railroad and on the general railroad with safety. However they overlooked the elements of human errors. The duty-load of KTX train driver's 14 basic operation processes was measured using NASA-TLX and found four processes with high duty-load. In this paper, critical tasks of the high duty-load processes are determined using a questionnaire. Some suggestions which include the improvement of facilities, operating system and operating skill are proposed to lighten duty-load of the critical tasks. The validity of the proposed new task processes is demonstrated by making question to KTX train driver. To use this results cost-benefit analysis, hazards analysis etc. should be performed additionally.

The era of express train in Korea has come since April in 2004. The KTX(Korea Train Express) which has introduced the technology of TGV of France is regraded as good as the ICE of Germany or Shinkansen of Japanese in its hardware aspects. However there are still many things to be improved in its software aspects such as the quality of services, since the new express railway system is in the early beginning stage. To improve the quality of services, we should first measure and analyze the current level of the service quality. Using SERVQUAL model, the service level of KTX is measured and analyzed in this paper. Issues on how to improve the service quality are discussed based on the measurement and analysis.

천성산지역을 관통하는 경부고속철로 KTX 원효터널 계획구간은 개발과 보전의 문제가 첨예하게 대립되어 있는 곳이다. 이 지역에 대한 식생구조를 밝히고자 대상지를 중심으로 65개(단위면적 100m2)의 조사구를 설치하고 조사를 실시하였다. 현존식생조사결과 침엽활엽수림과 낙엽활엽수림군락이 전체 대상지의 53%를 차지하였고, 녹지자연도 분석결과 등급 8이 전체의 86.68%를 나타내었다. 식생구조는 대표적인 군락인 침엽활엽수군락, 낙엽활엽수군락, 소나무-떡갈나무군락, 소나무-상수리나무군락, 떡갈나무군락에 대해 종조성을 알아보았다.

경부고속철 PSC 박스 교량의 주행안정성 평가방법을 개발하기 위하여 동적 수치해석을 수행하였다. 교량과 차량의 상호작용력을 고려한 수치 모형을 적용하였다. 3차원 유한요소 뼈대요소를 적용한 교량과 38자유도로 상세하게 모형화된 차량은 공용 중인 KTX의 물성 사양을 적용하였다. 주행속도 500 km/h까지 10 km/h 일정 증가분으로 수치해석하여 차량의 각 방향의 회전각을 교량/일반 도상에서 해석하고 비교하였다. 비교된 회전각비는 기존의 주행안정성 설계기준에 보완될 수 있는 평가방법으로 판단된다.

To evaluate the traffic safety of PSC box bridge for high running speed up to 500km/h of KTX, a dynamic analysis of displacement spectrum on the bearings of bridge is needed concurrently with existing design specifications. Longitude/transverse directions of displacement spectrum are considered to analyze the dynamic structural behaviors of PSC bridges as well as harmonic running movements of KTX due to three mass; a cargo body, front/rear bogies and four wheel axises connected with two suspensions. KTX power train is modeled by 38 degree-of -freedom ; 6 degree-of-freedom for body and bogies, and 5 degree-of-freedom for wheel axises. The rotation spectrum of KTX resulted in the analysis will be focused on the design specification of KTX running on the bridge, for increasing its speed as a new evaluation standards of traffic safety.

To evaluate the traffic safety of PSC box bridge for high running speed up to 450km/h of KTX, a dynamic analysis of rotation spectrum on the centre of vehicle is needed concurrently with existing design specifications. All directions of rotation spectrum are considered to analyze the dynamic structural behaviors of PSC bridges as well as harmonic running movements of KTX due to three mass; a cargo body, front/rear bogies and four wheel axises connected with two suspensions. KTX power train is modeled by 38 degree-of -freedom ; 6 degree-of-freedom for body and bogies, and 5 degree-of-freedom for wheel axises. The rotation spectrum of KTX resulted in the analysis will be focused on the design specification of KTX running on the bridge, for increasing its speed as a new evaluation standards of traffic safety

To evaluate the traffic safety of PSC box bridge for increasing speed 450km/h of KTX, a dynamic analysis of KTX wheel force spectrum is needed concurrently with existing design requirements. The wheel force spectrum are considered the dynamic PSC box bridge behaviors as well as KTX running movements with advanced numerical model. KTX power train is modeled one body, two bogies and four wheel axis as 38 degree of freedoms. The difference of each wheel forces are evaluated for running speed on the bridge upto the increasing target speed to propose new evaluation standards of traffic safety.

고속철 교량의 동적응답을 보다 정밀하게 해석하기 위한 동적해석방법을 개발하였다. 차후 증가될 초고속(450km/h)을 포함하여 고속 주행하는 KTX 동력차에 의한 교량의 동적거동을 면밀한 속도변수분석과 정밀한 해석을 위한 고속철, 교량 그리고 궤도구조물의 상호작용을 포함한 수치모델을 구성하였다. 네 가지 40~25미터 단순지간의 PSC 박스교를 3차원 유한 프레임요소 모델로 개발하였다. 스펙트럼밀도함수로 산출된 궤도불규칙값과 궤도간 상이한 거리차이를 수치모델화 하였다. 고속철차량은(KTX) 38자유도로 구성하였다. 38자유도 모델은 3방향 변위와 상응하는 회전각을 고려하였다. 동적증폭계수는 다양한 불규칙 궤도, 켐버, 주행속도, 자갈도상과 같은 주행조건에 의해 결정된다. 이와 같은 동적증폭계수를 해석하기위한 Newmark-β 기법과 Runge-Kutta기법을 적용하여 고속철 속도별과 경간별로 면밀하게 비교 분석하였다.