DOI QR코드

DOI QR Code

An Experimental Study for Estimation of Effective Temperature for Design in Steel Box Girder Bridge

강박스거더교의 설계 유효온도 산정을 위한 실험적 연구

  • 이성행 (부산대학교, 건설융합학부 토목공학전공) ;
  • 신효경 (부산대학교, 사회환경시스템공학부) ;
  • 김경남 (충북대학교, 건설기술연구소) ;
  • 정경섭 (충북대학교, 토목공학부, 토목공학과)
  • Received : 2016.08.16
  • Accepted : 2016.11.01
  • Published : 2016.12.27

Abstract

The temperature data were measured for two years in a bridge specimen and the bridge in service nearby in order to calculate the effective temperature for thermal loads in steel box girder bridge. The maximum and minimum effective temperatures were calculated in the bridge specimen and the bridge according to air temperature in 2014, 2015 and 2years. The effective temperatures calculated in this study were compared the Euro code and the Highway Bridge Design Criteria. The coefficients of determination in the maximum effective temperature and the Euro code for 2 year were calculated from R = 0.927, R = 0.894 in a bridge specimen and the bridge respectively. Those of minimum temperature and the Euro code were analyzed from R = 0.992, R = 0.813 in two bridge respectively. Also, the results were evaluated as being very similar, or slightly increased as compared with the maximum temperature of the Korean Highway Bridge Design Code(Limit State Design).

강박스거더교의 온도하중을 위한 유효온도를 산정하기 위하여, 강박스거더교의 시험체와 실교량에서 온도 데이터가 2년간 측정되었다. 이 실험체와 실교량의 온도 측정결과를 바탕으로 대기온도에 대한 최고 및 최저 유효온도를 2014년, 2015년, 그리고 연속 2년간 산정하였다. 산정된 최고, 최저 유효온도는 EURO code, 그리고 현행 도로교 설계기준과 서로 비교 평가되었다. 2년간(2 year) 측정한 데이터 기준으로 최대 유효온도와 Euro code의 결정계수는 교량 시험체에서 R=0.894, 실교량에서 R=0.927이 산정되며, 최저 유효온도는 교량 시험체에서 R=0.992, 실교량에서 R=0.813이 산정되었다. 또한 연구 결과는 도로교설계기준(한계상태설계법)의 최고온도와 유사하든가 약간 초과하는 것으로 평가되었다.

Keywords

References

  1. AASHTO (2007) AASHTO LRFD Bridge Design Specfications (SI Units, 4th Edition), pp.3-99-3-104.
  2. British Standards Institution (2004) Steel, Concrete and Composite Bridges, Part.2. Specification for loads, BS5400 : Part2 : 1978, pp.20-23.
  3. 한국도로교통협회(2012) 도로교설계기준, 국토해양부. KROAD (2012) Design Specification for Highway Bridges, Ministry of Land, Infrastructure and Transportation (in Korean).
  4. Roeder, C. (2002) Thermal Movement Design Procedure for Steel and Concrete Bridges, A Report to the National Cooperative Highway Research Program NCHRP, 20-07/106.
  5. Roeder, C. (2003) Proposed Design Method for Thermal Bridge Movements, Journal of Bridge Engineering, Vol.8, No.1, pp.12-19. https://doi.org/10.1061/(ASCE)1084-0702(2003)8:1(12)
  6. 신동욱, 김경남, 최철호, 이성행(2013) 강상자형교의 강바닥판에서 설계온도 하중을 위한 유효온도 산정, 한국구조물진단유지관리공학회 논문집, 한국구조물진단유지관리공학회, 제17권, 제6호, pp.077-087. Shin, D.W., Kim, K.N., Choi, C.H., and Lee, S.H. (2013) Evaluation of Effective Temperature for Estimate Design Thermal Loads in Steel Deck of Steel Box Girder Bridges, Journal of the korea Institute for Structural Maintenance and Inspection, KSMI, Vol.17, No.3, pp.77-87.
  7. 이성행(2016) 강상자형교의 설계 온도하중을 위한 최고 유효온도 산정, 한국산학기술학회 논문집, 한국산학기술학회, 제17권, 제8호, pp.133-138. Lee, S.H. (2016) Evaluation of Maximum Effective Temperature for Estimate Design Thermal Loads in Steel Box Girder Bridges, Journal of the Korea Academia-Industrial Cooperation Society, KAIS, Vol.17, No.8, pp.133-138.

Cited by

  1. Estimation of the Maximum Design Effective Temperature for Steel Box Girder Bridges Considering Asphalt Thickness of Concrete Deck vol.30, pp.5, 2018, https://doi.org/10.7781/kjoss.2018.30.5.299
  2. Effect of Cross-sectional Shape of Steel Box Girder on Distortion of Cross-section and Intermediate Diaphragm Spacings vol.31, pp.1, 2019, https://doi.org/10.7781/kjoss.2019.31.1.001
  3. Estimation of Minimum Design Effective Temperature for Steel Box Girder Bridges Considering Asphalt Thickness of Concrete Deck vol.31, pp.1, 2019, https://doi.org/10.7781/kjoss.2019.31.1.023
  4. 인공신경망을 이용한 강박스거더의 유효온도 산정 vol.19, pp.3, 2018, https://doi.org/10.5762/kais.2018.19.3.96
  5. 실측에 의한 강박스거더교의 상하 온도차에 대한 연구 vol.19, pp.8, 2016, https://doi.org/10.5762/kais.2018.19.8.545
  6. 콘크리트 바닥판의 아스팔트 두께에 따른 강박스거더교의 상하 온도차 vol.20, pp.3, 2016, https://doi.org/10.5762/kais.2019.20.3.602
  7. Evaluation of Design Temperature Load According to the Measurement of Deformation of Expansion Joints in Steel Box Girder Bridge vol.33, pp.3, 2016, https://doi.org/10.7781/kjoss.2021.33.3.163