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RISRapid 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 ...
Preparation and Hardening Performance of a Novel Surface Treatment Agent for Portland Cement–Based Materials
Publisher: American Society of Civil Engineers
Abstract: Surface treatment is essential for enhancing the mechanical performance of Portland cement–based materials. In this study, polymerized siloxane (PS) is proposed as a novel surface treatment agent. PS was synthesized from ...
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 ...
Slider Pitch Moment Associated With Dimple Friction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the design of a magnetic recording disk file, pitch moment exerted by the flexure on the slider is usually treated as a product of flexure pitch static attitude and pitch-stiffness (kp), ...
A Family of Biped Mechanisms With Two Revolute and Two Cylindric Joints
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A family of biped spatial four-link mechanisms with two revolute and two cylindric joints is proposed in this paper. Three main categories, including eight configurations are put forward. The ...
Model Uncertainty of Shear Wave Velocity-Based Method for Liquefaction Potential Evaluation
Publisher: American Society of Civil Engineers
Abstract: In this paper, the issue of model uncertainty is examined in detail within the framework of the first-order reliability method (FORM). The focus of the paper is on the characterization of the uncertainty of a shear wave ...
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 ...