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RISExtreme Wind Pressures and Non-Gaussian Characteristics for Super-Large Hyperbolic Cooling Towers Considering Aeroelastic Effect
Publisher: American Society of Civil Engineers
Abstract: Super-large hyperbolic cooling towers (SCT) are typical cylinder-like structures and feature spatial, three-dimensional (3D), circumferential motion characteristics, wherein the non-Gaussian probability distribution ...
Buffeting-Induced Resonances of Hangers at a Long-Span Suspension Bridge and Mitigation Countermeasure
Publisher: ASCE
Abstract: Buffeting-induced oscillations of hangers at a suspension bridge have been addressed in this work. The buffeting is obtained by a dynamic finite-element analysis procedure in the time domain, with simulated turbulent wind ...
Shear Effects on Flow past a Square Cylinder at Moderate Reynolds Numbers
Publisher: American Society of Civil Engineers
Abstract: Direct numerical simulation (DNS) and large eddy simulation (LES) with a dynamic Smagorinsky subgrid model are performed to investigate the flow past a square cylinder under the influence of velocity shear at the inlet at ...
Data-Based Windstorm Type Identification Algorithm and Extreme Wind Speed Prediction
Publisher: ASCE
Abstract: The extreme wind speed estimation method, which is critical for designing wind load calculation for building structures, should consider windstorm climate types for mixed climates. However, it is very difficult to obtain ...
Wind-Induced Instability Mechanism of Old Tacoma Narrows Bridge from Aerodynamic Work Perspective
Publisher: ASCE
Abstract: Postflutter limit cycle oscillations (LCOs) are typical nonlinear aeroelastic phenomena for bridge girders. An H-shaped section with a roughly 5:1 aspect ratio, treated as a simplified section of the Old Tacoma Narrows ...
Non-Gaussian Turbulence Induced Buffeting Responses of Long-Span Bridges
Publisher: ASCE
Abstract: Conventionally, for turbulence-induced buffeting vibrations, the Gaussianity assumption is applied to all three subsequent stages of turbulence, wind loads, and structural vibrations because of its wide applicability and ...
Improvements in Convergence Robustness with a 2D–3DOF Method:
Publisher: ASCE
Abstract: To overcome nonconvergence in the two-dimensional–three degrees of freedom
Life-Cycle Assessment of Long-Span Bridge’s Wind Resistant Performance Considering Multisource Time-Variant Effects and Uncertainties
Publisher: ASCE
Abstract: This paper examines the life-cycle wind resistant performance of a constructed long-span suspension bridge in the coastal region of China, aiming to quantify the multisource time-variant effects and uncertainties and ...
Wind-Induced Buffeting Vibration of Long-Span Bridge Considering Geometric and Aerodynamic Nonlinearity Based on Reduced-Order Modeling
Publisher: ASCE
Abstract: Aeroelastic instability and buffeting are two wind-induced phenomena for long-span bridges. In the traditional method, aeroelastic instability and buffeting are analyzed separately. If geometric and aerodynamic nonlinearity ...
Aerostatic Stability and Bifurcation for Long-Span Bridges Based on Reduced Order Modeling via Singular Value Decomposition
Publisher: American Society of Civil Engineers
Abstract: The traditional nonlinear aerostatic instability of long-span bridges is based on a two-layer iteration method that accurately predicts the structural equilibrium path before the critical buckling point. Due to strong ...