Advertisement

Science China Technological Sciences

, Volume 56, Issue 8, pp 1929–1939 | Cite as

Temperature gradient and its effect on flat steel box girder of long-span suspension bridge

  • ChangQing Miao
  • ChangHua Shi
Article

Abstract

The temperature field variation law and distribution characteristics of an orthotropic flat steel box girder under sunny conditions were analyzed through a field temperature test on the steel box girder of the operational Runyang Yangtze River Bridge (the suspension bridge part). Function optimization fitting and error analysis of the test data were conducted. A temperature gradient distribution curve applicable to a hexagonal flat steel box girder was proposed. Based on the measurement results, the temperature effect of an orthotropic flat steel box girder was analyzed using finite element method and the effects of different temperature gradient modes on the mechanical characteristics and stress distribution of the steel box girder were compared. Under sunny conditions, heat conduction in the flat steel box girder structure shows distinct “box-room effect” characteristics, and the actual temperature gradient distribution is inconsistent with the one suggested by the existing standards. The thermal stress of a steel box girder calculated from the measured temperature gradient mode exceeds that calculated from the standard, and the intensity approximates that under the action of designed vehicle loads. The temperature-induced stress is distributed centrally near the manufacturing welds of the orthotropic steel box girder, which should be considered in design, construction and research. Results from this study could supplement the existing bridge and culvert design standards.

Keywords

long-span bridge flat steel box girder temperature gradient temperature effect 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Ho D, Liu C H. Extreme thermal loadings in highway bridges. J Struct Eng, 1989, 115: 1681–1696CrossRefGoogle Scholar
  2. 2.
    Branco F A, Mendes P A. Thermal actions for concrete bridge design. J Struct Eng, 1993, 119: 2313–2331CrossRefGoogle Scholar
  3. 3.
    Froli M, Hariga N, Nati G. Longitudinal thermal behavior of a concrete box girder bridge. Struct Eng Int, 1996, 6: 237–242CrossRefGoogle Scholar
  4. 4.
    Roberts-Wollman C L, Breen J E, Cawrse J. Measurements of thermal gradients and their effects on segmental concrete bridge. J Bridge Eng, 2002, 7: 166–174CrossRefGoogle Scholar
  5. 5.
    Fu Y, DeWolf J T. Effect of differential temperature on a curved post-tensioned concrete bridge. Adv Struct Eng, 2004, 7: 385–397CrossRefGoogle Scholar
  6. 6.
    Capps M W R. The thermal behavior of the Beachley Viaduct/Wye Bridge. Ministry of Transport, Road Research Laboratory, RRL Report LR 234. 1968Google Scholar
  7. 7.
    Emerson M. The calculation of the distribution of temperature in bridges. Department of the Environment, TRRL Report LR 561. 1973Google Scholar
  8. 8.
    Tong M, Tham L G, Au F T K, et al. Numerical modelling for temperature distribution in steel bridges. Comput Struct, 2001, 79: 583–593CrossRefGoogle Scholar
  9. 9.
    Au F T K, Tham L G, Tong M, et al. Temperature monitoring of steel bridges. In: 6th Annual International Symposium on NDE for Health Monitoring and Diagnostics. Newport Beach, 2001. 282–291Google Scholar
  10. 10.
    Xia Y, Chen B, Xu Y. Temperature monitoring of tsing ma suspension bridge: Numerical simulation and field measurement. In: Earth and Space 2010: Engineering, Science, Construction and Operations in Challenging Environments. ASCE, 2010. 2535–2542Google Scholar
  11. 11.
    Lucas J M, Virlogeux M, Louis C. Temperature in the box girder of the Normandy Bridge. Struct Eng Int, 2005, 15: 156–165CrossRefGoogle Scholar
  12. 12.
    Hao C. Study on nonlinear influence of temperature on long-span steel cable-stayed bridge during construction (in Chinese). J Highway Transport Res Dev, 2003, 20: 63–66Google Scholar
  13. 13.
    Zhang Y P, Yang N, Li C X. Research on temperature field of steel box girder without pavement caused by the solar radiations. J Eng Mech, 2011, 28: 156–160Google Scholar
  14. 14.
    Sun J, Li A, Ding Y. Observation and research on temperature distribution in steel box girders of Runyang Yangtse River Bridge (in Chinese). J Highway Transport Res Dev, 2009, 26: 94–98Google Scholar
  15. 15.
    British Standard Institute. BS5400: Part2: 1978, Steel, concrete and composite bridges (Part 2. Specification for loads), 1978. 20–23Google Scholar
  16. 16.
    JTG D60-2004. General Code for Design of Highway Bridges and Culverts (in Chinese). Beijing: China Communications Press, 2004. 88–89Google Scholar
  17. 17.
    American Association of State High and Transportation Officials. LRFDSI-3, AASHTO LRFD Bridge design specifications, 2004. 96–98Google Scholar

Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.School of Civil EngineeringSoutheast UniversityNanjingChina
  2. 2.Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of EducationNanjingChina

Personalised recommendations