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Abstract: In this work, the aerodynamic stability of the Yichang Suspension Bridge over Yangtze River during erection was determined by three-dimensional nonlinear flutter analysis, in which the nonlinearities of structural dynamic characteristics and aeroelastic forces caused by large deformation are fully considered. An interesting result obtained was that the bridge was more stable when the stiffening girders were erected in a non-symmetrical manner as opposed to the traditional symmetrical erection schedule. It was also found that the severe decrease in the aerodynamic stability was due to the nonlinear effects. Therefore, the nonlinear factors should be considered accurately in aerodynamic stability analysis of long-span suspension bridges during erection.

[1]Boonyapinyo,V., Yamada,H. and Miyata,T., 1994.Wind-induced nonlinear lateral-torsional buckling of cable-stayed bridges. J.Struct.Engrg.,ASCE, 120(2): 486-506.

[2]Brancaleoni,F.,1992. The construction phase and its aerodynamic issues. In: Aerodynamics of Large Bridges, A.Larsenced., Balkema, Rotterdam, the Netherlands. p.147-158.

[3]Cobo del Arco, D., 1999a. Improving the wind stability of box-girder suspension bridges in erection. In: Wind Engineering into 21^st Century, Balkema, Rotterdam, the Netherlands, p.857-862.

[4]Cobo del Arco, D., 1999b. Improving suspension bridge wind stability with aerodynamic appendages. J. Struct. Engrg., ASCE, 125(12): 1367-1375.

[5]Cobo del Arco, D., 2001. Improving the wind stability of suspension bridges during construction. J. Struct. Engrg., ASCE, 127(8): 869-875.

[6]Jain, A., Jones,N.P. and Scanlan,R.H., 1996.Coupled flutter and buffeting analysis of long span bridge. J.Struct.Engrg.ASCE 122(7): 716-725.

[7]Larsen, A.,1995. Prediction of aeroelastic stability of suspension bridges during erection. Proceeding of 9^th International Conference on Wind Engineering New Delhi, p.917-927.

[8]Namini, A.H.1992.Finite element-based flutter analysis of cable-suspended bridge. J. Struct. Engrg.,ASCE,118(6):1509-1526.

[9]Tanaka, H. Damsgaard, A. and Reino,p., 1996. Aerodynamic stability of a suspension bridge with a partially constructed bridge deck. 15^th IABSE Congress Report, Lisbon, Portugal, p.113-118.

[10]Tanaka, H.,1998. Aerodynamics of long-span bridges during erection. In: Bridge Aerodymics, A.Larsen & S.Esdah(eds), A.A.Balkema, Rotterdam, the Netherlands, p.119-127.

[11]Tanaka,H. and Gimsing, N.J., 1999. Aerodynamic stability of non-symmetrically erected suspension bridge girders. J. Wind Engrg. Indust.Aerodyn., 80: 85-104.

[12]Xiang,H.F., 1999. Wind-resistant research Report of Yichang Bridge Yangtze River During Erection. Res. Rep. of Tongji University, Shanghai (in Chinese).

[13]Zhang, X.J., 2000. Three-dimensional nonlinear flutter analysis of long-span bridges. Ph.D. Dissertation. Tongji University, Shanghai, China (in Chinese).