Structural Engineering and Mechanics

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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)
  • Received : 2022.08.26
  • Accepted : 2023.05.03
  • Published : 2023.06.25
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Abstract

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.

Keywords

Acknowledgement

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).

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