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Mechanical Prestressing System for Strengthening Reinforced Concrete Members with Prestressed Carbon-Fiber-Reinforced Polymer Sheets
Publisher: American Society of Civil Engineers
Abstract: A new, practical mechanical prestressing system was developed to prestress carbon-fiber-reinforced polymer (CFRP) sheets. The system is used for strengthening reinforced concrete members. The main features of the system ...
Seismic Behavior of Pile-Group-Supported Bridges in Liquefiable Soils with Crusts Subjected to Potential Scour: Insights from Shake-Table Tests
Publisher: ASCE
Abstract: One-g shake-table tests were conducted to characterize seismic demands and reveal failure mechanisms of pile-supported bridges in liquefiable soils with crusts subjected to different scour scenarios, namely no scour, partial ...
Diaphragm Splicing Deviation in Steel Bridge Deck: Effect on Fatigue Performance and Its Preventive Measures
Publisher: ASCE
Abstract: Asymmetric scallop cutouts on the sides of a U-rib caused by diaphragm splicing deviation were detected in a bridge. To study the possible effect of this phenomenon on fatigue performance, the stresses of the asymmetric ...
Reinforcement Effect of High-Strength Bolts for Stop-Hole under Out-of-Plane Bending Loads
Publisher: ASCE
Abstract: The base metal at a stop-hole edge will be in out-of-plane torsion under bending loads to resist bolt tightening and weaken the reinforcement effect. By carrying out numerical simulation and fatigue tests, the effect of ...
Causes and Retrofits of Fatigue Cracking in the Braced Truss of Steel Box-Girder Longitudinal Diaphragms on a Cable-Stayed Bridge
Publisher: ASCE
Abstract: A finite element model of steel box girder with angle steel and round pipe braced trusses, which matched the construction details of the Sutong Yangtze River Bridge, was created to investigate the causes of cracks in braced ...
Cable Force Calculation Using Vibration Frequency Methods Based on Cable Geometric Parameters
Publisher: American Society of Civil Engineers
Rewelding Repair Effects on Fatigue Cracks in Steel Bridge Deck Welds
Publisher: American Society of Civil Engineers
Abstract: Specimens of rib-to-deck welds and diaphragm-to-rib welds in steel bridge decks were tested to crack under cyclic load. The cracks were repaired by rewelding. After the rewelding, other treatments were considered, including ...
Cable Replacement Method for Cable-Stayed Bridges Based on Sensitivity Analysis
Publisher: American Society of Civil Engineers
Abstract: Cable replacement is one of the key technologies used in the successful operation and maintenance of cable-stayed bridges. Removing cables causes structural variations. Selecting a replacement method affects bridge safety ...
Numerical Evaluation of Toe-Deck Fatigue in Orthotropic Steel Bridge Deck
Publisher: American Society of Civil Engineers
Research on Stress Spectrum of Steel Decks in Suspension Bridge Considering Measured Traffic Flow
Publisher: American Society of Civil Engineers
Abstract: This study investigated the traffic-induced stresses in the steel deck of a suspension bridge on the Yangtze River, taking into account the dependence of Young’s modulus of asphalt pavement on temperature. In particular, ...