Advanced aerostatic stability analysis of cable-stayed bridges using finite-element method

Based on the concept of limit point instability, an advanced nonlinear finite-element method that can be used to analyze the aerostatic stability of cable-stayed bridges is proposed. Both geometric nonlinearity and three components of wind loads are considered in this method. The example bridge is the second Santou Bay cable-stayed bridge with a main span length of 518 m built in China. Aerostatic stability of the example bridge is investigated using linear and proposed methods. The effect of pitch moment coefficient on the aerostatic stability of the bridge has been studied. The results show that the aerostatic instability analyses of cable-stayed bridges based on the linear method considerably overestimate the wind-resisting capacity of cable-stayed bridges. The proposed method is highly accurate and efficient. Pitch moment coefficient has a major effect on the aerostatic stability of cable-stayed bridges. Finally, the aerostatic failure mechanism of cable-stayed bridges is explained by tracing aerostatic instability path.

[1]  Yeong-Bin Yang,et al.  Stiffness Matrix for Geometric Nonlinear Analysis , 1986 .

[2]  Emil Simiu,et al.  Wind Effects on Structures: An Introduction to Wind Engineering , 1980 .

[3]  Virote Boonyapinyo,et al.  Wind‐Induced Nonlinear Lateral‐Torsional Buckling of Cable‐Stayed Bridges , 1994 .

[4]  William R. Spillers,et al.  Geometric stiffness matrix for space frames , 1990 .

[5]  J.Ch. Ermopoulos,et al.  Stability analysis of cable-stayed bridges , 1992 .

[6]  Man-Chung Tang.  BUCKLING OF CABLE-STAYED GIRDER BRIDGES , 1976 .

[7]  K. Bathe,et al.  Large displacement analysis of three‐dimensional beam structures , 1979 .

[8]  Yeong-Bin Yang,et al.  Joint Rotation and Geometric Nonlinear Analysis , 1986 .

[9]  Yang-Cheng Wang,et al.  STABILITY ANALYSIS OF BOX-GIRDER CABLE-STAYED BRIDGES , 2001 .

[10]  Pao-Hsii Wang,et al.  Initial shape of cable-stayed bridges , 1993 .

[11]  W. Terence O'Brien,et al.  Cable Movements Under Two-Dimensional Loads , 1964 .

[12]  K. Ogawa,et al.  Aerodynamic stability of a cable-stayed bridge with girder, tower and cables , 1992 .

[13]  Raid Karoumi,et al.  Some modeling aspects in the nonlinear finite element analysis of cable supported bridges , 1999 .

[14]  H. B. Jayaraman,et al.  A curved element for the analysis of cable structures , 1981 .

[15]  Yang-Cheng Wang,et al.  Stability analysis of steel cable-stayed bridges , 2001 .

[16]  R. C. Batista,et al.  Aerodynamic Stability Analysis of Cable-Stayed Bridges , 1995 .

[17]  Michel Virlogeux.  Recent evolution of cable-stayed bridges , 1999 .

[18]  Wei-Xin Ren.  ULTIMATE BEHAVIOR OF LONG-SPAN CABLE-STAYED BRIDGES , 1999 .

[19]  Kjell Mattiasson,et al.  Numerical results from large deflection beam and frame problems analysed by means of elliptic integrals , 1981 .

[20]  M A M Herzog.  AERODYNAMIC STABILITY OF CABLE-STAYED BRIDGES SIMPLIFIED , 1994 .