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Rapid Evaluation of Load-Carrying Capacity of Long-Span Bridges Using Limited Testing Vehicles
Publisher: ASCE
Abstract: Load testing is usually used to evaluate the load-carrying capacity of long-span bridges in their service life. However, a large number of calibration trucks should be arranged in complicated loading patterns to deform ...
Coupled Fatigue-Corrosion Failure Analysis and Performance Assessment of RC Bridge Deck Slabs
Publisher: American Society of Civil Engineers
Abstract: Coupled fatigue and corrosion is more detrimental for RC bridge deck slabs than either fatigue or corrosion separately. The main objectives of this study are to obtain a greater understanding of the deterioration mechanisms ...
Model Updating Using Bridge Influence Lines Based on an Adaptive Metamodel Global Optimization Method
Publisher: ASCE
Abstract: Model updating seeks to update a finite-element model to reduce discrepancies between predicted and measured data. Metamodel-based model updating using bridge influence lines is a very promising method. However, the accuracy ...
Bridge Damage Localization Using Axle Weight Time History Data Obtained through a Bridge Weigh-in-Motion System
Publisher: ASCE
Abstract: With an increase in bridge service time, damage will inevitably occur. Accurately identifying damage is of great significance to the operation and maintenance of a bridge. To realize a frequent identification of local ...
Stiffness Estimation of Girder Bridges Using Influence Lines Identified from Vehicle-Induced Structural Responses
Publisher: ASCE
Abstract: The influence line is an important static property in bridges. The shape and magnitude of the girder bridge influence line contain stiffness information for the bridge supports and beam. This research sought to directly ...
Multiorder Detection of Bridge Modal-Frequency Anomalies Considering Multiple Environmental Factors
Publisher: ASCE
Abstract: Because bridge modal frequency is inevitably influenced by environmental factors, and single-order frequency is possibly insensitive to some damage conditions, frequency anomaly detection will fail. Therefore, conducting ...
Fatigue Evaluation of Bridges Based on Strain Influence Line Loaded by Elaborate Stochastic Traffic Flow
Publisher: ASCE
Abstract: Stochastic traffic flow, as a type of repeated load, can cause serious high-cycle fatigue damage to bridges. In addition, the rough simulation of stochastic traffic flow and inappropriate analysis method of fatigue stresses ...
Nonlinear Uncertainty Modeling between Bridge Frequencies and Multiple Environmental Factors Based on Monitoring Data
Publisher: ASCE
Abstract: Due to the influence of multiple environmental factors, bridge frequencies can vary with time, which can affect the frequency variations that cause structural damage. However, the nonlinear effects of multiple environmental ...
Early Warning Method for Bearing Displacement of Long-Span Bridges Using a Proposed Time-Varying Temperature–Displacement Model
Publisher: ASCE
Abstract: Bearing displacement is a necessary monitoring index for a long-span bridge because abnormal bearing displacements could result from structural deterioration or damage. Therefore, an early warning method is established for ...
Eliminating the Bridge Modal Variability Induced by Thermal Effects Using Localized Modeling Method
Publisher: ASCE
Abstract: Eliminating the bridge modal variability induced by temperature interference is crucial in vibration-based damage detection. In this paper, a novel localized thermal–frequency correlation model is proposed to remove the ...