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RISFatigue Performance of Overhead Truss Sign Structure Coupler Connections
Publisher: ASCE
Abstract: Nearly all aluminum overhead truss sign structures (OHTSSs) in Kansas constructed before 2015 use an identical type of hot-riveted coupling assembly to provide connections between vertical poles and horizontal truss members. ...
Fatigue Performance of Saddle Connections in Aluminum Overhead Truss Sign Structures
Publisher: ASCE
Abstract: A newly developed saddle-type connection has been adopted for use at the joints of support-frame poles and truss chords in aluminum overhead truss sign structures (OHTSS) in Kansas since 2015. This paper describes a study ...
Effect of Soil Stress History on Scour Evaluation of Pile-Supported Bridges
Publisher: American Society of Civil Engineers
Abstract: Scour is a major cause of bridge failures, and the Federal Highway Administration (FHWA) now mandates that states assess the susceptibility of their bridge inventory to scour. The authors have developed and described an ...
Repairing Distortion-Induced Fatigue Cracks in Steel Bridge Girders Using Angles-with-Plate Retrofit Technique. I: Physical Simulations
Publisher: American Society of Civil Engineers
Abstract: Physical simulations of 914 mm (36 in.) deep girder-cross frame subassemblies subjected to cyclic loading were carried out to study the effects of distortion-induced fatigue and to evaluate the effectiveness of a new ...
Repairing Distortion-Induced Fatigue Cracks in Steel Bridge Girders Using Angles-with-Plate Retrofit Technique. II: Computer Simulations
Publisher: American Society of Civil Engineers
Abstract: This paper presents the results from computer simulations of 914 mm (36 in.) deep girder-cross frame subassemblies to study the effects of distortion-induced fatigue and to evaluate the effectiveness of a newly proposed ...
Use of CFRP Overlays to Repair Fatigue Damage in Steel Plates under Tension Loading
Publisher: American Society of Civil Engineers
Abstract: Fiber-reinforced polymer (FRP) overlays have been successfully used in the aerospace industry to repair fatigue damage in aluminum plates. With this success there is potential for use of similar FRP overlays to repair ...
Use of CFRP Overlays to Strengthen Welded Connections under Fatigue Loading
Publisher: American Society of Civil Engineers
Abstract: This study evaluates the performance of various methods to prevent and repair fatigue damage in welded connections, a recurring problem that affects a significant number of steel bridges. Experimental tests and analytical ...
Thin-Film Sensor for Fatigue Crack Sensing and Monitoring in Steel Bridges under Varying Crack Propagation Rates and Random Traffic Loads
Publisher: American Society of Civil Engineers
Abstract: Fatigue cracks are critical structural concerns for steel highway bridges, and fatigue initiation and propagation activity continues undetected between physical bridge inspections. Monitoring fatigue crack activity between ...
Development of a Distortion-Induced Fatigue Crack Characterization Methodology Using Digital Image Correlation
Publisher: ASCE
Abstract: Distortion-induced fatigue cracking is a primary maintenance and structural safety concern in steel bridges built prior to the 1980s in the United States. Manual, hands-on inspections are currently the primary method ...