Study of Wind Vibration Response of Curved Beam Bridge Under Dam Conditions
School of Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China
| Abstract: | The linear curve distribution of the beam may have favorable or proportional effects on the curved beam bridge. In order to clarify the effect law of curvature on the wind vibration response of the bridge, this paper combines wind tunnel tests and numerical simulations of wind vibration of curved beam bridge. The wind vibration response of curved girder bridge is obtained through segmental model wind tunnel test, finite element model of the dam is established and CFD numerical calculation is performed by ICEM software, and the accuracy of finite element modeling is verified by comparing the statistical values of numerical calculation results and test results. Then, we analyze the influence law of five curvature cases and five wind speed conditions on the wind vibration response of the curved girder bridge, finally, analyze the influence law of the presence of the dam on the wind vibration response of the curved beam bridge at the same curvature. The results show that the mean displacement and root mean square of the bridge tend to increase and then decrease with the increase of curvature; the most unfavorable curvature of the bridge displacement is 0.0024; with the increase of curvature, the higher order modal resonance response of the bridge is excited and the bandwidth of the higher order modal resonance frequency gradually increases; The presence of dams reduces the average wind speed; As the wind speed increases, the average displacement and root mean square of the bridge also increase; When the curvature of the curved girder bridge is small, the presence of the dam will significantly reduce the displacement of the curved girder bridge under wind load, but when the curvature increases to a certain degree, this tendency is significantly weakened. |
| Keywords: | Curved Beam Bridge; Curvature; Wind Speed; Numerical Simulation; Wind-induced Vibration Response |
| DOI: | 10.57237/j.cear.2023.02.002 |
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Received: 28 April 2023
Accepted: 29 June 2023
Published Online: 24 July 2023
Funding
| 1. | 重庆科技学院校企协同创新中心开放研究项目资助 (YKJCX2220624) |
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