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A comparative study on different walking load models

  • Wang, Jinping (Department of Structural Engineering, Tongji University) ;
  • Chen, Jun (Department of Structural Engineering, Tongji University)
  • 투고 : 2016.10.12
  • 심사 : 2017.07.08
  • 발행 : 2017.09.25

초록

Excessive vibrations can occur in long-span structures such as floors or footbridges due to occupant?s daily activity like walking and cause a so-called vibration serviceability issue. Since 1970s, researchers have proposed many human walking load models, and some of them have even been adopted by major design guidelines. Despite their wide applications in structural vibration serviceability problems, differences between these models in predicting structural responses are not clear. This paper collects 19 popular walking load models and compares their effects on structure?s responses when subjected to the human walking loads. Model parameters are first compared among all these models including orders of components, dynamic load factors, phase angles and function forms. The responses of a single-degree-of-freedom system with various natural frequencies to the 19 load models are then calculated and compared in terms of peak values and root mean square values. Case studies on simulated structures and an existing long-span floor are further presented. Comparisons between predicted responses, guideline requirements and field measurements are conducted. All the results demonstrate that the differences among all the models are significant, indicating that in a practical design, choosing a proper walking load model is crucial for the structure?s vibration serviceability assessment.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation

참고문헌

  1. AIJ (2004), Recommendations for Loads on Buildings, Japan.
  2. Allen, D.E. and Murray, T.M. (1993), "Design criterion for vibrations due to walking", AISC Eng. J., 30(4), 117-129.
  3. Bachmann, H. and Ammann, W. (1987), "Vibrations in structures induced by man and machines", Can. J. Civil Eng., 15(6), 1086-1087. https://doi.org/10.1139/l88-142
  4. Blanchard, J., Davies, B.L. and Smith, J.W. (1977), "Design criteria and analysis for dynamic loading of footbridges", Proceeding of a Symposium on Dynamic Behaviour of Bridges at the Transport and Road Research Laboratory, Berkshire, May.
  5. Bro 2004 (2004), Vagverkets Allmanna Tekniska Beskrivning for Nybyggande och Forbattring av Broar, Svensk Byggtjanst, Stockholm, Sverige.
  6. Brownjohn, J.M.W., Pavic, A. and Omenzetter, P. (2004), "A spectral density approach for modelling continuous vertical forces on pedestrian structures due to walking", Can. J. Civil Eng., 31(1), 65-77. https://doi.org/10.1139/l03-072
  7. BS 5400 (1999), Steel, Concrete and Composite Bridges - Part 2: Specification for Loads, BSI, London, UK.
  8. BS 6472 (1992), Evaluation of Human Exposure to Vibration in Buildings (1 Hz to 80 Hz), BSI, London, UK.
  9. Chen, J., Wang, H.Q. and Peng, Y.X. (2014), "Experimental investigation on Fourier-series model of walking load and its coefficients", J. Vib. Shock, 33(8), 11-15.
  10. Chen, J., Zhang, M. and Liu, W. (2015), "Vibration serviceability performance of an externally prestressed concrete floor during daily use and under controlled human activities", J. Perform. Constr. Facil., 30(2), 04015007.
  11. Ellingwood, B. and Tallin, A. (1984), "Structural serviceability: floor vibrations", J. Struct. Eng., 110(2), 401-419. https://doi.org/10.1061/(ASCE)0733-9445(1984)110:2(401)
  12. GB 50010-2010 (2015), Code for Design of Concrete Structures, China Architecture & Building Press, Beijing, China.
  13. Heinemeyer, C. et al. (2007), Design of Lightweight Footbridges for Human Induced Vibrations, European Commission, Italy.
  14. ISO 10137 (2007), Bases for Design of Structure-Serviceability of Buildings and Walkways against Vibrations, Geneva.
  15. Kerr, S.C. (1998), "Human induced loading on staircases", PhD Dissertation, University of London, University College, London.
  16. Liu, W. and Chen, J. (2014), "Vibration serviceability analysis of external-prestressing concrete floor through field measurements and experiments", Proceedings of the 13th International Symposium on Structural Engineering, Hefei, October.
  17. Murray, T.M., Allen, D.E. and Ungar, E.E. (1997), "Floor vibrations due to human activity", Nature News, 17(7), 768-771.
  18. OHBDC (1983), Ontario Highway Bridge Design Code, Alexandria.
  19. Petersen, C. (1996), "Dynamik der Baukonstruktionen", Vierweg, Braunschweig /Wiesbaden.
  20. Pietro, C. et al. (2005), Guidebook 2- Design of Bridges of Eurocode, Czech Technical University, 166 08 Prague 6, Prague, Czech Republic.
  21. Rainer, J.H., Pernica, G. and Allen, D.E. (1987), "Dynamic loading and response of footbridges", Can. J. Civil Eng., 15(1), 66-71. https://doi.org/10.1139/l88-007
  22. Smith, A.L., Hicks, S.J. and Devine, P.J. (2007), Design of Floors for Vibration: A New Approach, The Steel Construction Institute, Silwood Park, Ascot, Berkshire, UK.
  23. The Setra (2006), Assessment of Vibrational Behavior of Footbridges under Pedestrian Loading-Practical Guidelines, the Setra, Paris, France.
  24. Willford, M., Young, P. and Field, C. (2005), "Improved methodologies for the prediction of footfall-induced vibration", Proceedings of SPIE 5933, Buildings for Nanoscale Research and Beyond, California.
  25. Yoneda, M.A. (2002), "Simplified method to evaluate pedestrian-induced maximum response of cable-supported pedestrian bridges", Proceedings of the International Conference on the Design and Dynamic Behavior of Footbridges, Paris.
  26. Zivanovic, S., Pavic, A. and Reynolds, P. (2007), "Probability-based prediction of multi-mode vibration response to walking excitation", Eng. Struct., 29(6), 942-954. https://doi.org/10.1016/j.engstruct.2006.07.004

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