Aerodynamic stability of cable-supported bridges using CFRP cables

Abstract：To gain understanding of the applicability of carbon fiber reinforced polymer (CFRP) cable in cable-supported bridges, based on the Runyang Bridge and Jinsha Bridge, a suspension bridge using CFRP cables and a cable-stayed bridge using CFRP stay cables are designed, in which the cables cross-sectional area is determined by the principle of equivalent axial stiffness.Numerical investigations on the aerodynamic stability of the two bridges are conducted by 3D nonlinear aerodynamic stability analysis. The results showed that as CFRP cables are used in cable-supported bridges, for suspension bridge, its aerodynamic stability is superior to that of the case using steel cables due to the great increase of the torsional frequency; for cable-stayed bridge,its aerodynamic stability is basically the same as that of the case using steel stay cables. Therefore as far as the wind stability is considered, the use of CFRP cables in cable-supported bridges is feasible, and the cables cross-sectional area should be determined by the principle of equivalent axial stiffness. 作者： Author： ZHANG Xin-jun  YING Lei-dong 作者單位： College of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,China 期 刊： 浙江大學學報A（英文版）   ISTICEISCI Journal： JOURNAL OF ZHEJIANG UNIVERSITY SCIENCE A 年，卷(期)： 2007, 8(5) 分類號： U448.25 Keywords： Cable-supported bridges    Carbon fiber reinforced polymer (CFRP) cable    Aerodynamic stability    機標分類號： U44 U45 機標關鍵詞： aerodynamic stability    suspension bridge    stability analysis    reinforced polymer    carbon fiber    used in 基金項目： 浙江省自然科學基金

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