• Title, Summary, Keyword: 플로팅 슬래브 궤도

Search Result 24, Processing Time 0.042 seconds

The Development of a Floating Slab Track to Isolation System (플로팅 슬래브 궤도용 방진시스템 개발)

  • Park, Sang Gon;Koo, Hyung Wook;Han, Hyun Hee;Chun, Chong Keun;Jang, Seung Yup
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
    • /
    • /
    • pp.636-641
    • /
    • 2013
  • Recently the construction of stations under railway lines and railway sections passing through central area of cities are increasing, calling for an urgent establishment of countermeasures against railway vibration and its subsequent second-phase noise. Of technology developed up to now, the most efficient countermeasure is the floating slab track, a track system isolated from the sub-structure by springs. Unfortunately, however, the system design technology and technology for key components have not yet developed in Korea. As such, in this study, the analysis and design technology of floating slab track and its vibration isolator technology can be achieved. In preparation for future demands, it is expected to raise awareness for the need of technology self-support and to make a meaningful contribution to mitigating vibration and noise produced by the next-generation high-speed railway.

  • PDF

Introduction and Preliminary Design of Floating Slab Track for Rapid Transit Railway (고속철도용 플로팅 슬래브 궤도의 도입과 기본설계)

  • Kim, Yong-Jae;Lee, Eun-Ho;Park, Myoung-Gyun;Moon, Je-U;Park, Man-Ho
    • Proceedings of the Korea Concrete Institute Conference
    • /
    • /
    • pp.141-144
    • /
    • 2008
  • Recently, railway has been pointed to the efficiency of transportation, rapid transit, and comfortable train ride. the construction of railway near the downtown area and station building are increasing for maximization of utilization and convenience. but the heavy of transportation and rapid transit lead to increase noise and vibration. the noise and vibration of railway may cause the civil appeal, decline in the serviceability and insufficiency of environmental standard. Therefore, the solution to avoid environmental matters becomes one of the most important factor in constructing railway. In this study, floating slab system which is one of the solution to avoid noise and vibration in railway has been introduced, and the concept of preliminary design and vibration absorber of floating slab system according to the isolator has been introduced.

  • PDF

Stability of Punching Shear and Analysis Fatigue Stress of Joint of Low Vibration Floating Slab-Anti Vibration equipment (플로팅 궤도 슬래브-방진장치의 펀칭전단 안정성 및 피로응력 해석)

  • Park, Sung-Jae;Ma, Chang-Nam;Park, Myung-Gyun;Lee, Du-Hwa;Jo, Su-Ik
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.1460-1463
    • /
    • 2010
  • Railway has been pointed to the efficiency of transportation, rapid transit, and comfortable train ride. the construction of railway near the downtown area and station building are increasing for maximization of utilization and convenience. but the heavy of transportation and rapid transit lead to increase noise and vibration. The noise and vibration of railway may cause the civil appeal, decline in the serviceability and insufficiency of environmental standard. In this study, floating slab vibration and repeated connection of devices to support joints and fatigue stress analysis of punching shear performance review was conducted to evaluate the safety.

  • PDF

Analysis of Behavior of Train and Track at Transition Zone between Floating Slab Track and Conventional Concrete Slab Track (플로팅 슬래브궤도와 일반 콘크리트궤도 접속부에서의 열차 및 궤도의 거동 분석)

  • Jang, Seung-Yup;Yang, Sin-Chu;Park, Man-Ho;Joh, Su-Ik
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.379-384
    • /
    • 2009
  • It is of great importance to assure the running safety and ride comfort in designing the floating slab track for the mitigation of train-induced vibration. In this paper, for this, analyzed are the system requirements for the running safety and ride comfort, and then, the behavior of train and track at the transition zone between the floating slab track and the conventional concrete slab track according to several main design variables such as spring constant, damping coefficient, spacing and arrangement of isolators and slab length, using the dynamic analysis technique considering the train-track interaction. The results of numerical analysis demonstrate that the discontinuity of the support stiffness at the transition results in a drastic increase of the vertical vibration acceleration of the train body, wheel-rail interaction force, rail bending stress and uplift force. The increase becomes higher with the decrease of the spring constant of isolators and the increase of the isolator spacing, but the damping ratio does not significantly affect the behavior of train and track at the transition. Therefore, to assure the running safety and ride comfort, simultaneously increasing the effectiveness of vibration isolation, it is effective to minimize the relative vertical offset between the floating slab and the conventional track slab by adjusting the spring constant and spacing of isolators at the transition.

  • PDF

Vibration Analysis of Station under Railway Lines with Floating Slab Track (플로팅 슬래브궤도를 적용한 선하역사 구조물 진동해석)

  • Jang, Seung-Yup;Cho, Ho-Hyun;Yang, Sin-Chu
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.1719-1724
    • /
    • 2010
  • In the areas susceptible to vibration and noise induced by railway traffic such as downtown area and stations under railway lines, the vibration and the structure-borne noise can be solved by floating slab track system separating the entire track structure from its sub-structure using anti-vibration mat or springs. In other countries, the core technologies for vibration-proof design and vibration isolator - one of key components - have been developed and many installation experiences have been accumulated. However, in Korea, since the design technology of system and components are not yet developed, the foreign systems are being introduced without any adjustment. Thus, in this study, the vibration isolator has been developed and its performance are investigated by the dynamic analysis of a station structure under railways lines and the floating slab track system. For this purpose, the loads transferred from the vibration isolator of the floating slab track were evaluated by train running simulation considering vehicle-track interaction, and then the dynamic analysis of station structure subjected to these loads was performed. The dynamic analysis results show that the proposed floating slab track can reduce the vibration of structure by about 25dB compared with that in conventional ballast track without floating system.

  • PDF

The Development of a Floating Slab Track to Isolation System (플로팅 슬래브 궤도용 방진시스템 개발)

  • Park, Sang Gon;Chun, Chong Keun;Lee, Gyu Seop;Jang, Seung Yup
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.23 no.2
    • /
    • pp.112-122
    • /
    • 2013
  • Recently the construction of stations under railway lines and railway sections passing through central area of cities are increasing, calling for an urgent establishment of countermeasures against railway vibration and its subsequent second-phase noise. Of technology developed up to now, the most efficient countermeasure is the floating slab track, a track system isolated from the sub-structure by springs. Unfortunately, however, the system design technology and technology for key components have not yet developed in Korea. As such, in this study, the analysis and design technology of floating slab track and its vibration isolator technology can be achieved. In preparation for future demands, it is expected to raise awareness for the need of technology self-support and to make a meaningful contribution to mitigating vibration and noise produced by the next-generation high-speed railway.

Field performance evaluation of a Floating Slab Track to Isolation System (플로팅 슬래브 궤도용 방진시스템 현장성능 평가)

  • Park, Sang Gon;Koo, Hyung wook;Han, Hyun Hee;Chun, Chong Keun;Jang, Seung Yup
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
    • /
    • /
    • pp.352-357
    • /
    • 2014
  • Recently the construction of stations under railway lines and railway sections passing through central area of cities are increasing, calling for an urgent establishment of countermeasures against railway vibration and its subsequent second-phase noise. Of technology developed up to now, the most efficient countermeasure is the floating slab track, a track system isolated from the sub-structure by springs. Developed in this study, anti-vibration device for floating slab track (HLRM-High Load Rubber Mount) Haman station affiliated to the primary measurement was conducted in October 2012, one year after the second measurement after 2013 to be carried out in November and we want to change that. It is expected to raise awareness for the need of technology self-support and to make a meaningful contribution to mitigating vibration and noise produced by the next-generation high-speed railway.

  • PDF

The study for performance of isolators supported floating slab track (플로팅 슬래브궤도용 방진재의 성능에 관한 연구)

  • Kim, Jin-Ho;Cha, Hyo-Jung
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.569-574
    • /
    • 2007
  • The paper presents an application of the model to a practical problem of train-induced vibrations. The aim of this study is to vertify for performance of isolators which was developed in KRRI supported floating slab track. Laboratory tests on developed isolations show that the energy dissipation, under cyclic loading of constant amplitude, can be suitably represented by a combination of a viscous and a hysteretic damping. Also, other tests for structural performance are carried out, such as elastic material test, compression test and so on. The specimen, $400{\times}400{\times}300mm$, is placed between two stiff steel plates designed to uniformly distribute the compression stress on the surface.

  • PDF

Maximum Slab Length of Floating Slab Track (플로팅 슬래브 궤도의 최대길이)

  • Huan, Nguyen Ha;Jang, Seung-Yup;Chung, Won-Seok
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.173-180
    • /
    • 2011
  • Recently, many railway stations are built under the railway line in urban area. The passage of railway vehicles generates mechanical vibrations of a wide range of frequency. Thus, it is required to place structural vibration isolation systems to reduce vibration and noise originating from surrounding environments. This study is to investigate the maximum floating slab length based on track/floating slab interaction analyses. Actions to be taken into account include temperature, braking/acceleration, bending of the deck, and creep/shrinkage. The additional rail stress has been chosen for the criterion for the maximum slab length. In addition, further analyses are performed to include the stopper which restrict the in-plane movement of the floating slab track. Several alternatives for stopper positions were thoroughly studied in this study.

  • PDF