Parameter effects on the dynamic characteristics of a super-long-span triple-tower suspension bridge

A 3D finite element model for the Taizhou Yangtze River Bridge, the first triple-tower long-span suspension bridge in China, is established based on the nonlinear finite element software ABAQUS, and the dynamic characteristics of the bridge are analyzed using the LANCZOS eigenvalue solution method. The study focuses on the effects of the vertical, lateral and torsional stiffness of the steel box girder, the rigid central buckle and the elastic restraints connecting the towers and the steel box girder on the dynamic characteristics of the triple-tower suspension bridge. Our results show that, in general, the dynamic characteristics of the triple-tower suspension bridge are similar to those of two-tower suspension bridges. The vertical, lateral and torsional stiffness of the steel box girder have different effects on the dynamic characteristics of triple-tower suspension bridges. The elastic restraints have a more significant effect on the dynamic characteristics than the central buckle, and decreasing the stiffness of the elastic restraints results in the appearance of a longitudinal floating vibration mode of the bridge. Also, rigid central buckles have a greater influence on the dynamic characteristics of triple-tower suspension bridges than on those of two-tower suspension bridges. The results obtained could serve as a valuable numerical reference for analyzing and designing super-long-span triple-tower suspension bridges.

[1]  Li Ai-qun,et al.  Influence of Central Buckle on Dynamic Behavior of Long-Span Suspension Bridge , 2006 .

[2]  A. M. Abdel-Ghaffar.  Vibration studies and tests of a suspension bridge , 1978 .

[3]  P.K.K. Lee,et al.  Computer simulation of buffeting actions of suspension bridges under turbulent wind , 2000 .

[4]  Tao Liu,et al.  Buffeting-induced fatigue damage assessment of a long suspension bridge , 2009 .

[5]  Giuseppe Vairo,et al.  Flutter instability of long‐span suspension bridges: a simplified critical wind speed evaluation in closed form , 2003 .

[6]  H. Ding,et al.  The fundamental solutions for transversely isotropic piezoelectricity and boundary element method , 1999 .

[7]  Naif B. Almutairi,et al.  Control of Suspension Bridge Nonlinear Vibrations due to Moving Loads , 2006 .

[8]  Nevin Lianwen Zhang,et al.  Dynamic analysis of a train-bridge system under wind action , 2008 .

[9]  Ruan Jing.  STUDY ON DYNAMIC CHARACTERISTIC AND ASEISMIC PERFORMANCE OF A LONG-SPAN TRIPLE-TOWER SUSPENSION BRIDGE , 2008 .

[10]  Ding Nan-hong.  Influence of Structure Parameters on Natural Vibration Characteristics of Double-cable Suspension Bridge , 2007 .

[11]  Hitoshi Yamada,et al.  Wind resistant design for long span suspension bridges , 1995 .

[12]  Osamu Yoshida,et al.  STRUCTURAL CHARACTERISTICS AND APPLICABILITY OF FOUR-SPAN SUSPENSION BRIDGE , 2004 .

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

[14]  X. G. Hua,et al.  Full-order and multimode flutter analysis using ANSYS , 2008 .

[15]  Ahsan Kareem,et al.  Revisiting Multimode Coupled Bridge Flutter: Some New Insights , 2006 .

[16]  C. Callari,et al.  Localization Analysis in Dilatant Elasto-Plastic Solids by a Strong-Discontinuity Method , 2004 .

[17]  Feng Min-yi.  Dynamic Analysis of Self-anchored Concrete Suspension Bridge , 2004 .

[19]  Xinzhong Chen,et al.  Analysis of Long Span Bridge Response to Winds: Building Nexus between Flutter and Buffeting , 2006 .

[20]  Haifan Xiang,et al.  Series method for analyzing 3D nonlinear torsional divergence of suspension bridges , 2003 .

[21]  Gianni Bartoli,et al.  A simplified approach to bridge deck flutter , 2008 .

[22]  Giuseppe Vairo,et al.  Modelling and Simulation of Long-Span Bridges under Aerodynamic Loads , 2004 .

[23]  Liu Shu-wei.  Dynamic Characteristics and Parameter Analysis of Super-Long Span Suspension Bridges , 2007 .

[24]  Haifan Xiang,et al.  Nonlinear aerostatic and aerodynamic analysis of long-span suspension bridges considering wind-structure interactions , 2002 .

[25]  Ly Nie,et al.  Analysis of Crashworthy Measure of Reinforced Concrete Block on Anti-Seism in Urban Interchange Bridge Under Earthquake , 2006 .

[26]  Tong Guo,et al.  Accurate stress analysis on rigid central buckle of long-span suspension bridges based on submodel method , 2009 .