以港珠澳大桥跨崖13-1气田管线变截面连续梁桥主桥为背景,设计制作全桥气弹模型,通过风洞试验研究大跨度连续梁桥抗风性能。均匀流条件试验结果表明,大跨度连续桥梁颤振稳定性很好,但存在发生涡激振动的可能。试验研究出附加结构阻尼的机械措施作为有效降低涡激振动的方案。紊流条件下抖振试验结果表明连续梁桥抖振响应很小。 Taking the main bridge of continuous girder bridge with variable cross section of 13-1 gas field in Hongya-Zhuhai-Macao Bridge as a background, the full-bridge aeroelastic model is designed and manufactured. The wind-induced resistance of long-span continuous bridge is studied by wind tunnel test. The results of uniform flow test show that the flutter stability of long-span continuous bridges is good, but the possibility of vortex-induced vibration exists. The mechanical measures of additional structural damping were experimentally studied as a solution to effectively reduce the vortex-induced vibration. The results of chattering tests under turbulent flow conditions show that the chattering response of continuous beam bridges is very small.