【摘要】 以风洞试验和数值分析相结合的研究手段,对江东大桥分体式扁平双箱梁悬索桥在2种气候模式下的颤抖振性能进行对比研究,认为江东大桥抗风安全性能良好。分体式扁平钢箱梁的颤抖振响应分析中,2种不同气候模式下导纳函数取Sears函数时均与实测结果吻合良好且略高于风洞试验结果,导纳函数取1过于保守。研究证明,分体式扁平双箱梁颤抖振计算中导纳函数取Sears函数具有较好精度,满足工程安全性要求。更多还原

【Abstract】 Research on flutter and buffeting response of dual space cable suspension bridge-Jiangdong Bridge is carried out by both wind tunnel tests and numerical simulation in good and typhoon climates,and the paper ultimately ensures that the bridge had good wind resistant performance.For the flutter and buffeting behavior of flat twin-box girder,numerical simulation results is close to the wind tunnel test when the aerodynamic admittance is taken as Sears functions,and research revealed that aerodynamic admittance being taken as Sears function has good accuracy in flutter and buffeting analysis,and can satisfy the engineering demand.更多还原