DOI QR코드

DOI QR Code

확장된 상부플랜지 PSC I형 거더교의 동특성 및 동적안정성 분석

Dynamic Response of PSC I shape girder being used wide upper flange in Railway Bridge

  • 박종권 (국토교통부 익산지방국토관리청, 금오공과대학교 토목공학과) ;
  • 장판기 (동명기술공단) ;
  • 차태권 (제이스코리아) ;
  • 김찬우 (한국도로공사 도로처) ;
  • 장일영 (금오공과대학교 토목환경공학부)
  • 투고 : 2014.10.22
  • 심사 : 2015.05.29
  • 발행 : 2015.07.30

초록

철도교량의 경제성 확보를 전제로 PSC I형 거더의 장경간화 추세는 근간에 가장 활발히 진행되고 있는 연구이며, 이에 따른 교량의 강성확보를 위한 거더의 효율적인 기하형상 선정은 우선시 되어야할 과제이다. 본 연구에서는 회전반경과 휨효율을 기반으로 확장된 상부플랜지의 거더 단면을 선정하였으며, 본 거더가 적용된 경간장 25m, 30m, 35m, 40m PSC I형 거더교를 대상으로 수치해석을 수행하여 국내 및 국외의 동적성능 기준과의 부합여부를 검증하였다. 또한 경간장 40m PSC I형 거더의 동적성능을 상대적으로 비교하기 위해서 현재 호남고속철도에서 적용된 40m PSC Box 거더교를 대상으로 동적 해석을 수행하였고 KTX열차와 화물열차 주행 시의 동적안정성을 수치해석적으로 검토하여 국내 및 국외의 동적 안정성 기준과 부합여부를 검토하였다. 추가로 표준열차하중과 충격계수를 고려하여 정적해석을 수행하고 한계치와의 부합여부를 분석하였다. 그 결과, 검토대상 PSC I형 거더 철도교는 모든 항목에서 국내 철도교량 관련 정적, 동적안정성 기준치를 만족하는 것으로 분석되었다.

The tendency of more longer span length being required economical in railway bridges is studying about PSC I shaped girder. In this case, it is important to analyze and choose the effective girder section for stiffness of bridge. This study investigates the dynamic properties and safety of PSC I shaped girder being used wide upper flange whose selection based on radii and efficiency factor of flexure for railway bridge in different span type. In addition, 40m PSC Box girder bridge adopted in Honam high speed railway is further analyzed to compare dynamic performance of PSC I shaped girder railway bridge with same span length. Time history response is acquired based on the mode superposition method. Static analysis is also analyzed using standard train load combined with the impact factor. Consequently, the result met limit values in every case including vertical displacement, acceleration and distort.

키워드

참고문헌

  1. Sun-Kyu Cho, Jong-Min Lee, Dong-Joo Seo, Tae-Gyun Lee, Joung-Sun Lee, Optimum Design of Prestressed Cocnrete Girder Railway Bridge, The Korean Society for Railway, Journal of The Korean Society for Railway, Vol.8, No.3, 2005, pp.267-275.
  2. Sun-Kyu Cho, Jong-Min Lee, Su-Hyun Kim, Jae-dong Jung, Joung-Sun Lee, Optimum Design of Prestressed Cocnrete Girder Railway BridgeII; Optimum Section with 30m Span Length Accounting for Dynamic Stability, The Korean Society for Railway, Journal of The Korean Society for Railway, Vol.9, No.1, 2006, pp.102-109.
  3. Korea Rail Network Authority(2011), "Design Criteria for Railroad"
  4. Korea Rail Network Authority(2008) "Design Manual for Honam High Speed Train"
  5. SYSTRA(1995), Bridge Design Manual (BRDM) Final Report, Korea High Speed Rail Construction Authority (KHRC)
  6. Chan, T.H.T. and Chan J.H.F. (1999) The Use of Eccentric Beam Elements in the Analysis of Slab-on-Girder Bridges Struc. Eng. and Mech, 8(1), 85-102. https://doi.org/10.12989/sem.1999.8.1.085
  7. UIC Code 774-1R(1984), Recommendations for the design of railway bridges in reinforced and prestressed concrete", 2nd edition, International Union of Railway
  8. Y.B. Yang, J.D. Yau, and L.C. Hsu, "Vibration of Simple Beams due to Trains Moving at High Speeds", Engineering Structures, Vol.19, No.11, 1997, 936-944. https://doi.org/10.1016/S0141-0296(97)00001-1
  9. Oh, Soon Tack, Lee, Dong Jun, Shim, Young Woo, Yun, Jun Kwan, A Dynamic Analysis of PSC Box Bridge Varying Span Lengths for Increased Speeds of KTX, The Korea Institute For Structural Maintenance and Inspection, Journal of The Korea Institute for Structural Maintenance and Inspection, Vol.15, No.4, 2011, pp.204-211 https://doi.org/10.11112/jksmi.2011.15.4.204

피인용 문헌

  1. Effects of Modeling Parameters on Dynamic Performance of Railway PSC Bridge Girders vol.19, pp.6, 2019, https://doi.org/10.1007/s13296-019-00243-1
  2. Evaluation of Dynamic Stability of Complex Partial Girder for High-Speed Railway Bridges vol.32, pp.6, 2015, https://doi.org/10.7781/kjoss.2020.32.6.427