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RISAutonomous Rail Surface Defect Identification Based on an Improved One-Stage Object Detection Algorithm
Publisher: American Society of Civil Engineers
Abstract: The rail is an important component of track infrastructure, which withstands repeated wheel loading directly, and its condition is related to the safety of train operation. Thus, accurately identifying the size and location ...
Parameter Study of a New Strut-and-Tie Model for a Thick Cap with Six Piles
Publisher: American Society of Civil Engineers
Abstract: A comprehensive strut-and-tie model is a function of the nodes, struts, ties, model types, and pile reaction force. Because each element has more than one solution, the function is a problem of permutations and combinations. ...
Social Ex-Post Evaluation of Old City Zone Renovation Projects Based on Mathematical Attribute Measurement Model
Publisher: American Society of Civil Engineers
Abstract: Recently, old city zone renovation projects have become more frequent in China. But such projects—focusing on a city’s image while ignoring people’s livelihoods, local social environment, and cultural conditions—usually ...
Recent Advances in Wake Dynamics and Active Drag Reduction of Simple Automotive Bodies
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This is a compendium of recent progresses in the development of wake dynamics and active drag reduction (DR) of threedimensional (3D) simple automotive models, largely focused on the generic Ahmed body. It covers our new ...
Failure Mechanisms Governing Fatigue Strength of Steel–SFRC Composite Bridge Deck with U-Ribs
Publisher: ASCE
Abstract: A composite bridge deck system with steel fiber-reinforced concrete (SFRC) is an effective solution to the fatigue cracking problem of steel orthotropic decks. The governing fatigue failure modes were investigated by ...
Nitrogen Removal Performance and Microbial Community Analysis of Anoxic and Oxic Process in Electrolytic Manganese Residue Leachate
Publisher: ASCE
Abstract: Ammoniacal nitrogen present in leachate manganese electrolytes has gravely affected the ecosystem. This goal of this study was to use the anoxic and oxic process to treat the leachate from low COD/Nitrogen (C/N) manganese ...
Residual Energy on Ski-Jump-Step and Stepped Spillways with Various Step Configurations
Publisher: ASCE
Abstract: To better understand the effects of optimized step configurations and preaeration structure of a ski-jump-step spillway on the residual energy of skimming flows, skimming flow experiments were conducted on both ski-jump-step ...
Prediction of Flow-Regime Transition over a Stepped Channel
Publisher: American Society of Civil Engineers
Abstract: For the hydraulic design of a stepped channel, it is crucial to estimate the limit of flow regimes. Step flow in the quasi-uniform region of a stepped channel is analyzed theoretically in this paper. The present work adopts ...
Effect of Artificial Corrosion on the Postyielding Performance of Steel Reinforcement
Publisher: ASCE
Abstract: This paper investigates the influence of corrosion on the postyielding performance of steel reinforcement. Artificial corrosion was induced to the steel reinforcement based on mechanical methods. Different corrosion ...
Uniaxial Tensile Stress–Strain Behavior of Carbon-Fiber Grid–Reinforced Engineered Cementitious Composites
Publisher: American Society of Civil Engineers
Abstract: Carbon fiber–reinforced polymer (CFRP) grid–reinforced engineered cementitious composites (ECC) have been developed as an alternative to epoxy resin–based FRP plates for the strengthening of concrete structures. To broaden ...