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RISFailure Analysis of Thin Bedrock and Clay Roof in Underground Coal Mining: Case Study in Longdong Coal Mine
Publisher: ASCE
Abstract: It was found that movement in the overburden after mining was complicated under the condition of thin bedrock and clay roof (TBCR). In order to explain the small–big periodic weighting phenomenon occurring on the 7,128 ...
Experimental Uncertainty Quantification of Flutter Derivatives for a PK Section Girder and Its Application on Probabilistic Flutter Analysis
Publisher: ASCE
Abstract: Aerodynamic flutter instability could lead to the catastrophic collapse of flexible long-span bridges and needs to be prevented. This study investigated the variability of eight experimentally measured flutter derivatives ...
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 ...
Estimation of Tropical Cyclone–Induced Wind, Rainfall, and Wave Multihazards for Selected Coastal Cities in China
Publisher: American Society of Civil Engineers
Abstract: The southeastern coast of China experiences severe casualties and economic losses every year due to tropical cyclones (TCs), most of which are attributed to TC-induced wind, rainfall, and wave hazards. Estimating TC-induced ...
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 ...
Energy-Dependent Mission Planning for Agile Earth Observation Satellite
Publisher: American Society of Civil Engineers
Abstract: This paper investigates the energy-dependent mission planning of an agile earth observation satellite. According to the similarities between energy-dependent mission planning and the dynamic traveling salesman problem ...