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Performance Test of Wall to Wall Modular Structure Joint for Near-surface Transit

저심도 모듈식 구조체의 벽체간 연결 조인트 성능검증 실험

  • Lee, Jong Soon (Infrastructure R&D Team, Hyundai Engineering & Construction Co., Ltd.) ;
  • Kim, Hee Sung (Infrastructure R&D Team, Hyundai Engineering & Construction Co., Ltd.) ;
  • Lee, Sung Hyung (Infrastructure R&D Team, Hyundai Engineering & Construction Co., Ltd.) ;
  • Lee, Jun Kyoung (Infrastructure R&D Team, Hyundai Engineering & Construction Co., Ltd.)
  • Received : 2015.03.05
  • Accepted : 2015.05.18
  • Published : 2015.06.30

Abstract

To overcome the weaknesses of viaduct bridges and the non-economic efficiency of underground LRT, the study of near-surface railway systems is in progress. To apply a box structure to the low depth transit, a connection joint to precast modules are very important when applying precast modular structures to replace temporary structures. In this study, wall to wall connections were applied in diverse cases such as rebar connections, guiding structures that were used to fit the verticality of precast walls during construction, and non-reinforcement structures used only for waterstop. Experimental performance verification was carried out for the bending, shear and splitting of the wall to wall connection. Precision of construction joints between wall to wall was identified as a factor that influenced the structural performance of the precast wall. A structure that can serve as a guide during the vertical insertion of a wall is confirmed for the most suitable case, but it will be necessary to modify this structure for detailed cases.

자갈궤도에서 레일과 침목을 연결하는 체결장치의 레일패드 강성이 증가함에 따라 윤중이 증가하고 궤도틀림진전이 증가되어 궤도유지보수비가 증가하게 된다. 반면에 레일패드강성이 감소하면 차량운행에 따른 전력소모비가 증가하게 된다. 따라서 자갈궤도 설계 시에 차량과 궤도 및 운영조건을 고려하여 궤도유지보수비와 전력소모비를 가급적 작게 할 수 있는 적정 레일패드강성을 결정하는 것은 철도 경제성 확보차원에서 중요한 과제라 할 수 있다. 본 연구에서는 $L{\acute{o}}pez$ Pita 등이 제시한 자갈궤도에서의 최적레일패드 강성을 평가하는 프로세서를 기초로 적정 레일패드강성 범위를 구하였다. 연구결과에 중요한 영향을 주는 레일패드강성에 따른 윤중변화를 보다 정확하게 평가하기 위하여 궤도구성품의 거동특성을 보다 상세하게 고려할 수 있는 고도화된 수치해석적 기법을 사용하여 평가하였다. 또한 국내에서의 차량, 궤도 운영조건을 고려함으로써 국내에서 궤도설계에 적용할 수 있는 적정 레일패드강성 범위를 도출하였다.

Keywords

References

  1. J.R. Shin, A.H. Lee, C.S. Lim, J.S. Lee, et al. (2014) The concept of open-cut modular construction method for near-surface transit, 2014 Autumn Conference of the Korean Society for Railway, Jeju, pp. 89.
  2. J.K. Lee, J.S. Lee, S.H. Lee, H.S. Kim (2014) Performance test of modular structure joint for near-surface transit, 2014 Autumn Conference of the Korean Society for Railway, Jeju, pp. 146.
  3. H.S. Kim, J.S. Lee, J.K. Lee, J.S. Yi (2014) Structural analysis of precast box connection/joint for near-surface transit, 2014 Autumn Conference of the Korean Society for Railway, Jeju, pp. 153.
  4. S.Y. Lee, J.J. Song, H.Y. Kim, Y.H. Lee, et al. (2012) Study on the shape of a longitudinal joint of the slab-type precast modular bridges, Journal of Korea Institute for Structural Maintenance and Inspection, 16(5), pp. 98-111. https://doi.org/10.11112/jksmi.2012.16.5.098
  5. K.S. Kyung, H.H. Lee, J.C. Jeon, K.H. Cho (2003) A study on structural behaviour at rigid connection of rahmen-type hybrid bridge, Journal of Korean Society of Civil Engineers, 23(4A), pp. 687-694.
  6. ACI 550.2R-13 (2013) Design guide for connection in precast jointed systems, American Concrete Institute.
  7. P. Negro, G. Toniolo (2012) Design guidelines for connections of precast structures under seismic actions, JRC Scientific and Policy Reports, European Commission.

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