Aerodynamic characteristics of a 2-box girder section adaptable for a super-long span suspension bridge

2002 ◽  
Vol 90 (12-15) ◽  
pp. 2033-2043 ◽  
Author(s):  
K. Ogawa ◽  
H. Shimodoi ◽  
T. Oryu
Keyword(s):  
Suspension Bridge ◽  
Aerodynamic Characteristics ◽  
Box Girder ◽  
Long Span

Research on the Fatigue Design Load of Orthotropic Steel Box Girder for Long Span Suspension Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2365-2368
Author(s):  
Ce Chen ◽  
Bo Hai Ji
Keyword(s):  
Suspension Bridge ◽  
Load Spectrum ◽  
Fatigue Load ◽  
Box Girder ◽  
Traffic Loading ◽  
Long Span ◽  
Vehicle Load ◽  
Steel Box Girder ◽  
Traffic Composition ◽  
Matlab Programming

Traffic composition and the vehicle load were statistically analyzed and a fatigue vehicle load model was established according to the law of equivalent fatigue damage. Based on the MATLAB programming language and the Statistics Toolbox, vehicle fatigue load spectrum was simulated for accurately assessing actual fatigue stress of existing bridge under traffic loading. And the fatigue load could be used in the design for suspension bridge steel box girder.

Yi Sun-sin Bridge - Design of the Long Span Suspension Bridge with Streamlined Twin Box Girder

2012 ◽  
Vol 18 (30) ◽  
pp. 238-247 ◽  
Author(s):  
Myeong-jae Lee ◽  
Ho-chul Kwon ◽  
Sang-hoon Shin
Keyword(s):  
Suspension Bridge ◽  
Bridge Design ◽  
Box Girder ◽  
Long Span

Dynamic Characteristics Analysis and Parametric Study of a Super-Long-Span Triple-Tower Suspension Bridge

2012 ◽  
Vol 256-259 ◽  
pp. 1627-1634 ◽  
Author(s):  
Jia Wen Zhang ◽  
Wen Hua Guo ◽  
Chao Qun Xiang
Keyword(s):  
Dynamic Characteristics ◽  
Suspension Bridge ◽  
Torsional Stiffness ◽  
Mode Shapes ◽  
Suspension Bridges ◽  
Box Girder ◽  
Long Span ◽  
Steel Box Girder ◽  
Elastic Restraints ◽  
Central Buckle

Based on the Taizhou Yangtze River Bridge, a 3D finite element model is developed to establish its deformed equlibrium configuration due to dead loading. Strating from deformed configuration,a modal analysis is performed to provide the frequencies and mode shapes. 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. The results show that, variation of vertical, lateral and torsion stiffness of stiffening girders have effects on the vibration frequency in corresponding directions only and have little effects in other directions. 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. The results obtained could serve as a valuable numerical reference for analyzing and designing super-long-span tripletower suspension bridges.

Experimental Research on Aerodynamic Characteristics of Bridge Deck at Extreme Attack Angles

2010 ◽  
Vol 163-167 ◽  
pp. 4104-4108
Author(s):  
Fu You Xu ◽  
Bin Bin Li ◽  
Cai Liang Huang ◽  
Zhe Zhang
Keyword(s):  
Bridge Deck ◽  
Wind Tunnel Test ◽  
Aerodynamic Characteristics ◽  
Attack Angle ◽  
Potential Danger ◽  
Box Girder ◽  
Long Span ◽  
Detailed Explanation ◽  
Section Model ◽  
Bridge Security

Long-span flexible bridges are always challenged by fierce wind load, and the wind with extreme-attack-angle may be a potential danger to threaten the bridge security. The three-component coefficients at extreme attack angles of the section model of one flat streamlined box-girder and central slotted box-girder are investigated through the wind tunnel test, and the detailed explanation are made. The results show that lift and pitch coefficients change approximately linearly between stall angles, and the coefficients display significant nonlinearity and a certain pulsation phenomenon when the attack angle exceeds stall angles, and the stall angles should not be less than ±10° for the sake of the safety of bridges.

Aerodynamic characteristics of super long-span bridges with slotted box girder

2000 ◽  
Vol 88 (2-3) ◽  
pp. 297-306 ◽  
Author(s):  
Hiroshi Sato ◽  
Shigeki Kusuhara ◽  
Ken-ichi Ogi ◽  
Hiroteru Matsufuji
Keyword(s):  
Aerodynamic Characteristics ◽  
Box Girder ◽  
Long Span Bridges ◽  
Long Span
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