To study the wind resistance stability of long span suspension bridge used with CFRP cables under the designed wind speed, the calculation formulas related to the critical wind speed and flutter stability coefficients in the wind resistance design codes are sorted out and it is found that the improving of vertical bending and torsion base frequencies of suspension bridge can improve the wind resistance stability of the bridge. With reference to the Akashi-Kaikyo Bridge, Japan, the design of the CFRP cable and steel cable suspension bridges each with a main span of 2 000 m is studied. The dynamic characteristics of different bridges used with two kinds of the materials and three kinds of suspenders (crisscross suspenders, spatial cables and cables and truss) are respectively calculated. The conclusions drawn from the comparative analysis are that the crisscross suspenders can significantly improve the symmetric and asymmetric torsional vibration frequencies. The improving of the torsional vibration frequencies by the spatial cables is not significant and the construction is difficult. The vibration frequencies of the cables and truss in all directions are improved, but the usage amount of materials is great and the construction technology is complicated. The utilization of the CFRP cables for long span suspension bridge is nevertheless helpful to improve the wind resistance stability of the bridge.%为研究大跨度CFRP缆索悬索桥在设计风速下的抗风稳定性,对抗风设计规范中临界风速和颤振稳定系数计算公式进行整理,发现提高悬索桥的竖向弯曲基频和扭转基频可以提高桥梁的抗风稳定性.以日本明石海峡大桥为背景探索性设计了主跨2 000 m的CFRP缆索悬索桥和铜缆索悬索桥,分别计算了采用2种材料、3种吊索方案(交叉吊索、空间缆索、索桁)的不同桥梁的动力特性.经对比分析得出以下结论:综合交叉索方案可以显著提高对称和反对称扭转振动频率；空间缆索方案扭转频率提高不显著且施工困难；索桁方案各个方向振动频率均得到提高,但材料用量大,施工工艺复杂；采用CFRP缆索有利于提高悬索桥的抗风稳定性.
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