以我国东南沿海台风多发区2座大跨度自锚式悬索桥为工程背景,运用节段模型风洞试验技术,采用1:80加劲梁节段模型研究了2座桥的涡激共振响应,包括-5°、-3°、0°、+3°、+5°五种风攻角,2种不同施工状态的共20个试验工况,综合分析了大跨度自锚式悬索桥在无任何附加措施情况下抵抗涡激振动的性能。
Backgrounded by the two long span self-anchored suspension bridges in the typhoon high-incidence coastal area in the southeastern China, the sectional model wind tunnel testing techniques and the sectional models of the stiffening girders on a scale of 1 : 80 were used to study the vortex-excited resonance response of the two bridges, in which five kinds of wind attack angles of -5°, -3°, 0°, +3° and +5° and twenty load cases for two kinds of construction states were considered and the resistant capacity of the long span self-anchored suspension bridges against the vortex-excited vibration without the aid of any additional measures was comprehensively analyzed.