Structural Engineering and Mechanics

  • 제86권6호
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  • Pages.705-714
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  • 2023
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Model test method for dynamic responses of bridge towers subjected to waves

  • Chengxun Wei (School of Civil Engineering, Guangxi University of Science and Technology) ;
  • Songze Yu (School of Civil Engineering, Guangxi University of Science and Technology) ;
  • Jiang Du (Offshore Wind Design & Research Department, Beijing Goldwind Science & Creation Windpower Equipment Co.) ;
  • Wenjing Wang (School of Civil Engineering, Guangxi University of Science and Technology)
  • 투고 : 2022.08.26
  • 심사 : 2023.05.03
  • 발행 : 2023.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to establish a dynamic model test method of bridge pylons subjected to ocean waves, the similarity method of hydroelastic model test for bridge pylons were analyzed systematically, and a model design and production method was proposed. Using this method, a dynamic test model of a bridge pylon was made, and then a free vibration test on the model structure and a dynamic response test of the model structure under wave actions were conducted in a wave flume. The results of the free vibration test show that the primary natural frequencies of the structure by the model test are close to the design frequencies of the prototype structure, indicating that the dynamic characteristics of the bridge pylon are well simulated by the model structure. The results of the dynamic response test show that wave induced base shear forces and motion responses on the model structure are consistent with the numerical results of the prototype structure. The model test results confirm that the proposed model test design method is feasible and applicable. It has application and reference significances for model testing studies of such marine bridge structures.

키워드

과제정보

This research was funded by Guangxi Science and Technology Base and Talent Project (Project No. 2020AC19196) and Guangxi University Young and Middle-aged Teachers Scientific Research Ability Improvement Project (Project No. 2020KY08024).

참고문헌

  1. Bradner, C., Schumacher, T., Cox, D. and Higgins, C. (2011), "Experimental setup for a large-scale bridge superstructure model subjected to waves", J. Waterw. Port Coast. Ocean Eng., 137(1), 3-11. https://doi.org/10.1061/(ASCE)WW.1943-5460.0000059.
  2. Chi, S. and Lin, S. (2004), "Validation of similitude laws for dynamic structural model test", World Earthq. Eng., 20(4), 11-20. https://doi.org/10.3969/j.issn.1007-6069.2004.04.002.
  3. Guo, A., Fang, Q., Bai, X. and Li, H. (2015), "Hydrodynamic experiment of the wave force acting on the superstructures of coastal bridges", J. Bridge Eng., 20(12), 4015012. http://doi.org/10.1061/(ASCE)BE.1943-5592.0000758.
  4. Hayatdavoodi, M., Seiffert, B. and Ertekin, R.C. (2014), "Experiments and computations of solitary-wave forces on a coastal-bridge deck. Part II: Deck with girders", Coast. Eng., 88(2014), 210-228. https://doi.org/10.1016/j.coastaleng.2014.02.007.
  5. Lan, Y., Liu, H., Huang, F., Xue, L. and Chen, G. (2005), "Experimental studies on hydrodynamic loads on piles and slab of Donghai bridge-Part II:hydrodynamic forces on pile array and slab in wave-current combinations", J. Hydrodyn., 20(3), 332-339. https://doi.org/10.3969/j.issn.1000-4874.2005.03.009.
  6. Lin, G. (1958), "The study of the model similarity law of arch dam vibration", J. Hydraul. Eng., (1), 79-104. https://doi.org/10.13243/j.cnki.slxb.1958.01.004.
  7. Lin, G., Zhu, T. and Lin, B. (2000), "Similarity technique for dynamic structural model test", J. Dalian Univ. Techno., 40(1), 1-8. https://doi.org/10.3321/j.issn:1000-8608.2000.01.001.
  8. Liu, C., Zhang, S. and Hao, E. (2017), "Joint earthquake, wave and current action on the pile group cable-stayed bridge tower foundation: An experimental study", Appl. Ocean Res., 63(2017), 157-169. https://doi.org/10.1016/j.apor.2017.01.008.
  9. Liu, S., Li, Y. and Li, G. (2007), "Wave current forces on the pile group of base foundation for the East Sea Bridge, China", J. Hydrodyn., Ser. B, 19(6), 661-670. https://doi.org/10.1016/S1001-6058(08)60001-3.
  10. Liu, Y., Iwashita, H. and Hu, C. (2015), "A calculation method for finite depth free-surface green function", Int. J. Nav. Arch. Ocean Eng., 7(2), 375-389. https://doi.org/10.1515/ijnaoe-2015-0026.
  11. Newman, J.N. (1985), "Algorithms for the free-surface Green function", J. Eng. Math., 19(1), 57-67. https://doi.org/10.1007/BF00055041.
  12. Seiffert, B., Hayatdavoodi, M. and Ertekin, R.C. (2014), "Experiments and computations of solitary-wave forces on a coastal-bridge deck. Part I: Flat plate", Coast. Eng., 88(2014), 194-209. https://doi.org/10.1016/j.coastaleng.2014.01.005.
  13. Song, J., Duan, W., Zou, Y. and Qin, H. (2002), "Integrals of hydrodynamic pressures over a panel with 3-D source distribution method", J. Ship Mech., 6(4), 24-32. https://doi.org/10.3969/j.issn.1007-7294.2002.04.003.
  14. Wan, L., Gao, Z., Moan, T. and Lugni, C. (2016), "Experimental and numerical comparisons of hydrodynamic responses for a combined wind and wave energy converter concept under operational conditions", Renew. Energ., 93, 87-100. http://doi.org/10.1016/j.renene.2016.01.087.
  15. Wei, C., Zhou, D. and Ou, J. (2019a), "Calculation method of wave forces on large round-ended caisson foundation", J. Shanghai Jiaotong Univ., 24(2), 184-189. https://doi.org/10.1007/s12204-019-2054-x.
  16. Wei, C., Zhou, D. and Ou, J. (2019b), "Wave forces and moments on a gravity pier foundation", J. Shanghai Jiaotong Univ., 24(3), 305-312. https://doi.org/10.1007/s12204-019-2063-9.
  17. Wei, C., Zhou, D. and Ou, J. (2019c), "Wave and wave-current actions on a bridge tower: An experimental study", Adv. Struct. Eng., 22(6), 1467-1478. https://doi.org/10.1177/1369433218816523.
  18. Xu, G., Cai, C.S., Han, Y., Wu, C. and Xue, F. (2018), "Numerical assessment of the wave loads on coastal twin bridge decks under stokes waves", J. Coastal Res., 34(3), 628-639. https://doi.org/10.2112/JCOASTRES-D-17-00053.1.
  19. Zheng, X., Li, H., Rong, W. and Li, W. (2015), "Joint earthquake and wave action on the monopile wind turbine foundation: An experimental study", Mar. Struct., 44, 125-141. http://doi.org/10.1016/j.marstruc.2015.08.003.