| The current pedestrian suspension bridge due to its small stiffness and damping,resulting in its low wind stability,can not guarantee the demand for security problems.Therefore,in order to solve this problem,the finite volume method is used to simulate the influence of the random load disturbance of the suspension bridge with different cross sections.In this paper,Zhangjiajieglass bridge is used as the object of study.The numerical simulation of its current main beam(separated double-box section)is carried out by using the fluid calculation software STAR-CCM,and its streamlined type is not ideal.Secondly,And the results are compared with the initial section.The results show that the streamlined cross-section is smaller than that of the separated cross-section by the airflow.Finally,the calculation of the cross-section is carried out.The elliptical cross section of the main girder is analyzed by analyzing the three main girder sections.In conclusion,in the design and construction of the bridge main girder,the main girder cross section is designed to reduce the flow of the air flow through the main section of the suspension bridge to enhance the aerodynamic performance of the bridge. |
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