scholarly journals Aeroelastic analysis of long-span bridges using time domain methods

2009 ◽  
Author(s):  
J. Á. Jurado ◽  
A. León ◽  
S. Hernández ◽  
F. Nieto
Keyword(s):  
Time Domain ◽  
Long Span Bridges ◽  
Long Span ◽  
Aeroelastic Analysis

Wind Buffeting in Time Domain Analysis of Long-Span Bridges using RM Bridge

2017 ◽  
Vol 109 (6) ◽  
pp. 3307-3317
Author(s):  
Afshin Hatami ◽  
Rakesh Pathak ◽  
Shri Bhide
Keyword(s):  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Long Span Bridges ◽  
Long Span

Objective-based equivalent static wind loads for long-span bridges

2019 ◽  
Author(s):  
Zachary J. Taylor ◽  
Pierre-Olivier Dallaire ◽  
Stoyan T. Stoyanoff
Keyword(s):  
Time Domain ◽  
Experimental Testing ◽  
Wind Loads ◽  
Response Analysis ◽  
Long Span Bridges ◽  
Buffeting Response ◽  
Long Span ◽  
Equivalent Static Wind Loads ◽  
The Time Domain ◽  
Key Aspects

<p>The process to arrive at design wind loads for long-span bridges involves experimental testing and analytical methods. Time domain simulations are becoming increasingly common and many available studies demonstrate results of buffeting response analysis in the time domain. However, there is significantly more to the process than the response analysis to derive wind loads that can be applied practically for design. The current study focuses on two key aspects required to derive design wind loads: prediction of the peak modal deflection and derivation of modal combination coefficients using objective functions.</p>

Applications of reduced order models in the aeroelastic analysis of long-span bridges

2017 ◽  
Vol 34 (5) ◽  
pp. 1642-1657
Author(s):  
L. Ebrahimnejad ◽  
K.D. Janoyan ◽  
D.T. Valentine ◽  
P. Marzocca
Keyword(s):  
Computational Efficiency ◽  
Reduced Order Models ◽  
Discrete Vortex ◽  
Content Type ◽  
Reduced Order ◽  
Long Span Bridges ◽  
Analysis And Design ◽  
Long Span ◽  
Aeroelastic Analysis ◽  
High Computational Efficiency

Purpose The application of reduced order models (ROMs) in the aerodynamic/aeroelastic analysis of long-span bridges, unlike the aeronautical structures, has not been extensively studied. ROMs are computationally efficient techniques, which have been widely used for predicting unsteady aerodynamic response of airfoils and wings. This paper aims to discuss the application of a reduced order computational fluid dynamics (CFD) model based on the eigensystem realization algorithm (ERA) in the aeroelastic analysis of the Great Belt Bridge (GBB). Design/methodology/approach The aerodynamic impulse response of the GBB section is used to construct the aerodynamic ROM, and then the aerodynamic ROM is coupled with the reduced DOF model of the system to construct the aeroelastic ROM. Aerodynamic coefficients and flutter derivatives are evaluated and compared to those of the advanced discrete vortex method-based CFD code. Findings Results demonstrate reasonable prediction power and high computational efficiency of the technique that can serve for preliminary aeroelastic analysis and design of long-span bridges, optimization and control purposes. Originality/value The application of a system identification tool like ERA into the aeroelastic analysis of long-span bridges is performed for the first time in this work. Authors have developed their earlier work on the aerodynamic analysis of long-span bridges, published in the Journal of Bridge Engineering, by coupling the aerodynamic forces with reduced DOF of structural system. The high computational efficiency of the technique enables bridge designers to perform preliminary aeroelastic analysis of long-span bridges in less than a minute.

scholarly journals Some challenges on the aeroelastic analysis and design of long span bridges

2011 ◽  
Author(s):  
S. Hernandez ◽  
F. Nieto ◽  
A. Baldomir ◽  
J. A. Jurado
Keyword(s):  
Long Span Bridges ◽  
Analysis And Design ◽  
Long Span ◽  
Aeroelastic Analysis

Alternate Designs for Long Span Bridges

PCI Journal ◽  
1980 ◽  
Vol 25 (4) ◽  
pp. 48-58
Author(s):  
Felix Kulka
Keyword(s):  
Long Span Bridges ◽  
Long Span

Innovative Steel-UHPC Composite Bridge Girders for Long-span Bridges

2016 ◽  
Vol 106 (7) ◽  
pp. 614-622
Author(s):  
Xudong SHAO ◽  
Lu DENG
Keyword(s):  
Bridge Girders ◽  
Long Span Bridges ◽  
Long Span ◽  
Composite Bridge
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