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Multiscale Modeling and Seismic Fragility Analysis of Corroded Precast Concrete Frame
Publisher: ASCE
Abstract: Precast concrete frames have been widely used, though little is known about their fragility under the combined influence of seismic excitation and corrosion. In this study, one four-story precast concrete frame with different ...
Reliability-Based Maintenance Strategy for Gusset Plate Connections in Steel Bridges Based on Life-Cost Optimization
Publisher: ASCE
Abstract: This paper focuses on the maintenance decision of vulnerable parts that need rehabilitating within the design service period under repetitive vehicular loads in steel bridges based on the time-variant performance deterioration ...
Test and Analysis of Postfire Fatigue Performance of Steel Wires and Cables
Publisher: ASCE
Abstract: Fire is an accidental, severe hazard for bridges during their lifetime. Hangers in suspension bridges are among the most vulnerable components with respect to the hanger fatigue effect, and fatigue performance after fire ...
Diagnosis and Mitigation of Fatigue Damage in Longitudinal Diaphragms of Cable-Stayed Bridges
Publisher: American Society of Civil Engineers
Abstract: Premature fatigue cracking in the tube-gusset plate connection of longitudinal diaphragms has been observed in long-span cable-stayed bridges, resulting in undesirable stress distribution of the decks and costly repair ...
Fatigue Life Evaluation on Short Suspenders of Long-Span Suspension Bridge with Central Clamps
Publisher: American Society of Civil Engineers
Abstract: Suspenders are crucial load-bearing members of suspension bridges, and they are prone to fatigue damage under repetitive vehicle and wind loads. Field observation shows that short suspenders at the midspan or the ends of ...
Measurement and Comparative Study on Movements of Suspenders in Long-Span Suspension Bridges
Publisher: American Society of Civil Engineers
Abstract: Unanticipated damage has been observed in short suspenders near the midspan and/or ends of long-span suspension bridges. The observed damage poses a major threat to public safety if it results in fracture of suspenders ...
Corrosion-Fretting Fatigue Analysis of Bridge Cables Based on Multifactor Competition Model and Time-Dependent Reliability
Publisher: ASCE
Abstract: Bridge cables are the safety lifelines of cable-supported bridges. However, many suspenders in cable-supported bridges were inaccurately evaluated and suffered from premature damage under complex environmental and load ...
Experimental Study on Corrosion-Fretting Fatigue Behavior of Bridge Cable Wires
Publisher: ASCE
Abstract: Bridge cables are often subjected to tensile stress variation, interior contact stress, and corrosion environment, resulting in premature failure of wires. This paper experimentally investigates the behavior of bridge wires ...
Fatigue Assessment of Critical Connections in a Historic Eyebar Suspension Bridge
Publisher: American Society of Civil Engineers
Abstract: The Hercílio Luz Bridge is an eyebar suspension bridge with a riveted girder built in 1926 in Brazil, in which severe fatigue damage was found after years of service. To provide guidance for rehabilitation of the bridge, ...