01151151

Component

https://doi.org/10.3141/2172-14

http://scholar.google.com...Wipf&publication_year=2010

Technological advancements in sensing, computing, and networking have facilitated the application of long-term structural health–monitoring (SHM) and made it a more widely accepted tool to improve bridge management. A fiber-optic strain-based SHM system developed in cooperation with the Iowa Department of Transportation is described; the system continuously monitors bridge performance under ambient traffic loads to detect damage. Although this SHM system has broad potential application to numerous types of structural deterioration or damage, the system is presented here by using a case study associated with fatigue cracking in the web gap region. The described SHM system autonomously collects, reduces, and analyzes strain data and determines the damage occurrence in a near-real-time fashion. In this system, statistical control chart analysis is applied over the strategically defined damage indicator to determine the damage mathematically. Data preprocessing strategies were also studied to limit the impact of major nonstructural factors causing strain variations. The effectiveness of the system was demonstrated with field-collected predamage data and synthetic postdamage data. Experimental research is being conducted to validate the system at the field-testing level.

01322901

10-2396

English

pp 123-131

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309160414

Print

Figures (8) ; Photos (2) ; References (10) ; Tables (1)

Bridge management systems; Condition surveys; Data collection; Fatigue cracking; Fiber optics; Information processing; Monitoring; Sensors; Statistical analysis; Strain measurement; Structural health monitoring; Traffic loads; Webbing

Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls

TRIS, TRB, ATRI

Jan 25 2010 11:07AM

• Bond and Anchorage of High-Strength Reinforcing Steel
• Condition Assessment of Bill Emerson Memorial Cable-Stayed Bridge Under Postulated Design Earthquake
• Convenient Method for On-Site Check of Single Steel I-Girder Stability During Erection
• Crack Detectability and Durability of Coaxial Cable Sensors in Reinforced Concrete Bridge Applications
• Design and Application of Large-Scale Cast-Steel Joints for Special-Shape Bridges
• Design Fatigue Load of Sign Support Structures Due to Truck-Induced Wind Gust
• Dynamic Amplification of Pier Column Internal Forces Due to Barge–Bridge Collision
• Effect of Bedding Thickness on Behavior of Rigid Pipes as Determined by Using Numerical Crack Modeling
• Effect of Fiber-Reinforced Polymer Configuration on Reliability of Flexurally Strengthened Concrete Beams (With Discussion and Closure)
• Effective Repair Grouting Methods and Materials for Filling Voids in External Posttensioned Tendons
• Field Testing and Performance Evaluation of Through-Plate Girder Railway Bridge
• Flexural Behavior and Design with High-Strength Bars and Bars Without a Well-Defined Yield Point
• In-Service Shear and Moment Girder Distribution Factors in Simple-Span Prestressed Concrete Girder Bridge: Measured with Built-in Optical Fiber Sensor System
• Inspection of Voids in External Tendons of Posttensioned Bridges
• Methodology to Evaluate Oxidation Degradation of High-Density Polyethylene Corrugated Pipe Resin
• Rationally Designed Staged Posttensioning to Abate Reflective Cracking on Side-by-Side Box-Beam Bridge Decks
• Review and Assessment of Fire Hazard in Bridges
• Seismic Design and Analysis of Buried Structures with CANDE-2007
• Shear Stiffness of Neoprene Bearing Pads Under Long-Term Loads
• Simplified Erection Guidelines for Double I-Girder Systems During Bridge Construction
• Structural Analyses, Design, and Testing of Retrofit Bridge Rail: Historic 794-ft Roy B. Inks Steel Truss Bridge in Llano, Texas