Design of deepwater foundations of main ship channel cable-stayed bridge of Pingtan straits rail-cum-road bridge, Bridge Construction, 46(3), 86–91.
Extreme responses of sea-crossing bridges subjected to offshore ground motion and correlated extreme wind and wave, Ocean Engineering, 247, 110710.Ĭhen, X.
(in Chinese)īai, X.Y., Jiang, H., Song, G.S. Thesis, Harbin Institute of Technology, Harbin. Numerical Simulation of Wind Wave Current Flows and Dynamic Performance Investigation of Bridge Tower under Wind-Wave Actions, Ph.D. Compared with the wave-only and wind-wave coupling, wind-wave-undercurrent coupling can excite bridges to produce larger displacement and acceleration responses: at the middle of the main girder span, compared with the wave-only case, the maximum displacement in the transverse bridge direction increases by 23.58% and 46.95% in the wind-wave and wind-wave-undercurrent coupling cases, respectively at the tower top, the variation in the amplitude of the displacement and acceleration responses of wind-wave and wind-wave-undercurrent coupling are larger than those in the wave-only case, where the acceleration change amplitude of the tower top is from −0.93 to 0.86 m/s 2 in the wave-only case, from −2.2 to 2.1 m/s 2 under wind-wave coupling effect, and from −2.6 to 2.65 m/s 2 under wind-wave-undercurrent coupling effect, indicating that the tower top is mainly affected by wind loads, but wave and undercurrent loads cannot be neglected.īai, X.D., 2018. The dominant frequency under wind-wave-undercurrent coupling is close to the natural vibration frequencies of several bridge modes, such that wind-wave-undercurrent coupling is more likely to cause a resonance effect in the bridge. The results indicate that the displacement and acceleration of the front bearing platform top are more significant than those of the rear bearing platform. From time and frequency domain perspectives, the displacement and acceleration responses of the sea-crossing Rail-cum-Road cable-stayed bridge influenced by wave-only, wind-wave, and wind-wave-undercurrent coupling are comparatively studied. The feasibility of the method is verified by comparing the tower top displacement response with relevant experimental data. In this paper, a fluid-structure separation solution method is implemented using Ansys-Midas co-simulation, in order to solve the above issues effectively while using less computational resources. The dynamic response of long-span Rail-cum-Road cable-stayed bridges is particularly severe under their influence, potentially leading to safety problems. Sea-crossing bridges are affected by random wind-wave-undercurrent coupling loads, due to the complex marine environment.
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