Superstructure Design and Calculation Analysis of Xiamen Aoguan Bridge
Xiamen Aoguan Bridge adopts a double-deck bridge structure design,with the upper deck for vehicles using a double-box multi-cell box girder,and the lower deck for slow traffic using a curved steel box girder suspension structure.There is a focus on introducing the o-verall bridge design as well as the difficulties encountered in structural design,and there is a detailed analysis of the calculation of longitudinal beams and cross beams.The results show that the dynamic characteristics of the double-deck bridge structure can be effectively improved by reducing the spacing between suspension rods and installing longitudinal and lateral"V"-shaped tension and compression rods.By adding in-ter-span beams between the two boxes,the lateral bending and torsional stiffness of the double-box multi-cell box girder structure can be sig-nificantly improved.If a certain safety reserve is considered,the longitudinal calculation of the double-box multi-cell box girder can adopt the double single beam model calculation method,but the traditional cross beam calculation method is not applicable.
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