Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Flexural & Fatigue Evaluation of Link Slab for Continuous Girder-Type Precast Modular Bridges

거더형식 프리캐스트 모듈러교량 연속화 지점부에 적용되는 연결슬래브의 휨성능 및 피로성능 평가

  • Joo, Bong-Chul (Korea Institute of Construction Technology, Structural Engineering Research Division) ;
  • Song, Jae-Joon (Korea Institute of Construction Technology, Structural Engineering Research Division) ;
  • Lee, Sang-Yoon (Korea Institute of Construction Technology, Structural Engineering Research Division)
  • 주봉철 (한국건설기술연구원 SOC성능연구소) ;
  • 송재준 (한국건설기술연구원 SOC성능연구소) ;
  • 이상윤 (한국건설기술연구원 SOC성능연구소)
  • Received : 2012.12.24
  • Accepted : 2013.09.04
  • Published : 2013.10.31
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Abstract

The modular technology has been already applied in automotive industry, plant and shipbuilding industry. Recently, the modular technology was applied in bridge construction. The modular bridge is different from the existing precast bridges in terms of standardized design that the detailed design of members is omitted by using the standard modules; the design of the modular bridge is completed by only assembling the standard modules without design in member level. The girder-type precast modular bridge has been developed as a simply supported bridge. The girder-type precast modular bridge could be applied to the multi-span bridges through the continuity method. The continuity of the girder-type precast modular bridge is achieved by using the link slab which is easy to construction and appropriate to the rapid construction. The link slabs have been used as the type of reinforced concrete structure in US from the 1950's. In 2000's, the link slab using the engineered cementitious concrete (ECC link slab) has been developed. In this study, the RC type link slab which is more reproducible and economic relative to the ECC link slab was used for the continuity of the girder-type precast modular bridges, and the construction detail of RC type link slab was modified. In addition, the modified iterative design method of RC type link slab was proposed in this study. To verify the proposed design method, the flexural tests were conducted using the RC type link slab specimens. Also, the fatigue test using the mock-up specimen was conducted with cyclic loading condition up to two million cycles.

모듈러 기술은 자동차, 플랜트, 조선산업 분야에서 이미 오래전부터 적용해 오던 기술로, 최근 교량 분야에도 적용되고 있다. 모듈러교량은 부재별 세부설계 과정이 생략되고, 모듈별로 표준화 된다는 점에서 기존의 조립식교량과는 차별화 된다. 거더형식 프리캐스트 모듈러교량은 단순지지 교량 형식으로 개발되었으며, 다경간 교량에 적용할 경우 단순지지 교량 형식의 모듈러교량을 연속화하는 방법으로 적용할 수 있다. 거더형식 프리캐스트 모듈러교량의 연속화는 시공이 간편하고 급속시공에 적합한 연결슬래브를 적용하는 방법으로 이루어진다. 연결슬래브는 1950년부터 미국에서 RC 형식으로 사용되기 시작하였으며, 2000년대에는 ECC를 적용한 연결슬래브(ECC 연결슬래브)가 개발된 바 있다. 이 연구에서는 ECC에 비해 재연성이 좋고 경제적인 RC를 적용한 연결슬래브를 다경간 거더형식 프리캐스트 모듈러교량에 적용하였으며, 기존의 RC 형식 연결슬래브를 보완한 형태의 연결슬래브와 수정된 연결슬래브의 설계방법을 제안하였다. 제안된 연결슬래브 설계방법의 검증을 위하여 연결슬래브 바닥판 실험체를 제작하고 연결슬래브의 휨성능 및 균열 사용성 검증실험을 수행하였으며, 이후 실제 교량시스템을 모사한 실험체를 이용하여 200만회 피로성능 검증실험을 수행하였다.

Keywords

References

  1. Song, J. J., Kim, H. Y., Lee, S. Y., Lee, Y. H., and Lee, J. M., "Concept of the Precast Modular Bridge and Preliminary Design," Proceedings of 2011 Annual Conference of the Korean Society of Civil Engineers, 2011, pp. 915-918.
  2. Wagner, F. J. and Buechting, F., "Die Federplattenbauweise bei Mehrfeldrigen Fertigteilbruecken aus Beton," Bauingenieur, Vol. 56, 1981, pp. 131-137.
  3. Zilch, K. and Weiher, H., "Untersuchung des Zustandes der Deutschen Spannbetonbruecken," Lehrstuhl fuer Massivbau, Technische Universitaet Muechen, 2006.
  4. Zuk, W., "Jointless Bridges," Research Report No. VHTRC 81-R48, Virginia Highway & Transportation Research Council, 1981.
  5. Larson, M. B., "Bridge Decks Going Jointless," Research Record, Construction & Technology, Issue No. 100, 2005, pp. 1-4.
  6. Kim, Y. Y., Fischer, G., and Li, V. C., "Performance of Bridge Deck Link Slabs Designed with Ductile Engineered Cementatious Composite," ACI Structural Journal, Vol. 101, No. 6, 2004, pp. 792-801.
  7. Kim, Y. Y., Kim, J. S., Ha, G. J., and Kim, J. K., "Development of an ECC (Engineered Cementitious Composite) Designed with Ground Granulated Blast Furnace Slag," Journal of the Korea Concrete Institute, Vol. 18, No. 1, 2006, pp. 21-28. https://doi.org/10.4334/JKCI.2006.18.1.021
  8. Kim, Y. Y. and Park, Y. D., "Design Concept and Approach Proposed for Engineered Cementitious Composites (ECC) Link Slabs in a Jointless Bridge Deck System," Journal of the Korean Society of Civil Engineers, Vol. 24, No. 6A, 2004, pp. 1151-1158.
  9. Caner, A. and Zia, P., "Behavior and Design of Link Slabs for Jointless Bridge Decks," PCI Journal, PCI, Vol. 43, No. 3, 1998, pp. 68-80. https://doi.org/10.15554/pcij.05011998.68.80
  10. Lepech, M. D. and Li, V. C., "Application of ECC for Bridge Deck Link Slabs," Materials and Structures, Vol. 42, 2009, pp. 1185-1195. (doi: http://dx.doi.org/10.3151/jact.1.215.)
  11. Ministry of Land, Transport and Maritime Affairs, Design Specification of Highway Bridges, Korea Road & Transportation Association, 2010.
  12. Oesterle R. G., Tabatabai H., Lawson T. J., Refai T. M., Woltz J. S., and Scanlon A., "Jointless and Integral Abutment Bridges-Summary Report," Research Report, Federal Highway Administration, Washington D.C., 1999.
  13. Ministry of Construction & Transportation, Design Specification of Concrete Structures, Korea Concrete Institute, 2007.
  14. Okeil, A. M. and ElSafty, A., "Partial Contimuity in Bridge Girders with Jointless Decks," Practice Periodical on Structural Design and Construction, ASCE, Vol. 10, No. 4, 2002, pp. 229-238. (doi: http://dx.doi.org/10.1061/ (ASCE)1084-0680(2005)10:4(229)
  15. Charuchaimontri, T., Senjuntichai, T., Ozbolt, J., and Limsuwan, E., "Effect of Reinforcement in Link Slabs of Highway Bridges," Engineering Structures, ScienceDirect, Vol. 30, 2008, pp. 546-560. (doi: http://dx.doi.org/10.1061/ (ASCE)1084-0680(2005)10:4(229)
  16. Aktan, H., Attanayake, U., and Ulku, E., "Combining Link Slab, Deck Sliding over Backwall, and Revising Bearings," Research Report No. RC-1514, Michigan Department of Transportation, 2008.
  17. Snedeker, K., White, D., and Kahn, L., "Evaluation of Performance and Maximum Length of Continuous Decks in Bridges," Research Report No. 09-07, Georgia Department of Transportation, 2011.

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