【摘要】 青岛海湾大桥大沽河航道桥为主跨260 m的独塔自锚式分离双箱梁悬索桥,运用ANSYS软件对成桥状态及施工状态进行动力特性分析,并依托全桥气弹模型风洞试验,采用1∶118的几何缩尺比进行成桥状态和施工状态的颤振及抖振试验,测定颤振临界风速及抖振响应,据此分析评估该桥的抗风性能。风洞试验结果表明,该桥具有较好的颤振稳定性。更多还原

【Abstract】 The Dagu River Channel Bridge of Qingdao Bay Bridge is a single tower self-anchored suspension bridge with twin separated box girders and with a main span 260 m.To have an understanding of the wind performance of the bridge,the ANSYS software was used to analyze the dynamic behavior of the bridge at both the construction and completion stages.The wind tunnel tests for flutter and buffeting of the bridge at the stages were made by the aeroelastic model of overall bridge with a scale of 1:118,the critical flutter wind speed and buffeting response were measured in the tests and the wind-resistant behavior of the bridge was analyzed and assessed based on the results of the tests.The results show that the bridge has fairly good flutter stability.更多还原