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Structural Engineering and Mechanics Volume 86, Number 6, June25 2023 , pages 705-714 DOI: https://doi.org/10.12989/sem.2023.86.6.705 |
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Model test method for dynamic responses of bridge towers subjected to waves |
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Chengxun Wei, Songze Yu, Jiang Du and Wenjing Wang
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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. | ||
| Key Words | ||
| bridge pylon; dynamic model test; model design; similarity method; wave action | ||
| Address | ||
| Chengxun Wei, Songze Yu, Wenjing Wang: School of Civil Engineering, Guangxi University of Science and Technology, 268 Donghuan-ro, Liuzhou City, Guangxi Province, China Jiang Du: Offshore Wind Design & Research Department, Beijing Goldwind Science & Creation Windpower Equipment Co., 19 Kangding Street, Beijing Economic and Technological Development Zone, Beijing, China | ||