Journal of Civil, Construction and Environmental Engineering
Volume 5, Issue 2, April 2020, Pages: 20-34
Received: Apr. 29, 2020;
Accepted: May 11, 2020;
Published: May 15, 2020
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Shijie Wang, School of Civil Engineering, Northeast Forestry University, Harbin, China; School of Civil and Architectural Engineering, Heilongjiang Institute of Technology, Harbin, China
Quansheng Sun, School of Civil Engineering, Northeast Forestry University, Harbin, China
Hongshuai Gao, School of Civil Engineering, Northeast Forestry University, Harbin, China
The strength, stiffness, and stability check calculations and the effect of earthquakes should be considered in the design of cable-stayed arch bridges with collaborative systems. This study aims to investigate the dynamic performance and structural response of cable-stayed arch bridges under seismic action. The space analysis model is enhanced of the Xiang Feng River Bridge using finite element software Midas Civil, whose lower foundation considers the effects of piles and soil. Firstly the vibration period, vibration frequency, and modal characteristics are computed, thus the dynamic performance is summarized of the bridge. Then, a proper seismic wave is selected according to engineering conditions and in terms of three orthogonal directions: inputting the adjusted El Centro seismic wave, considering Rayleigh damping, and calculating via the Newmark method. Furthermore, a time-history response analysis under the action of one-dimensional and multidimensional earthquake is performed. Lastly, the results of the response analysis is compared and the behavior characteristics of arch bridge is summarized under seismic action. The results show that the transverse stability problem of bridges is prominent and should be the focus of antiearthquake fortification, the inclined cable tower of this bridge is not conducive to the earthquake resistance of the structure in comparison with the vertical cable tower. and the influence of horizontal and vertical earthquake actions should be considered in antiearthquake designs.
Dynamic Performance and Anti-earthquake Analysis of Cable-stayed Arch Bridge, Journal of Civil, Construction and Environmental Engineering.
Vol. 5, No. 2,
2020, pp. 20-34.
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