ESWP: International Bridge Conference®: Inspection Analysis, Part 1

Inspection Analysis Part 1

Tuesday, June 3, 2008
8:30 AM - Noon

Chair: Jeffrey J. Campbell, PE, Michael Baker Jr. Corp., Moon Township, PA

IBC 08-16 - 3D Capture of Bridges Using Laser Technology
Jim Harvey, Waterways Ireland, Enniskillen, Co Fermanogh, Northern Ireland; Brian Devlin, CEI Collins Engineers Ltd, Dublin, Ireland; Duncan Lees, Plowman Craven Associates, Hertfordshire, United Kingdom

Waterways Ireland implemented a programme to provide a more accurate bridge inventory of which 3D laser scanning was an integral part. This paper provides an overview of the laser scanning of 342 bridges as part of the programme implementation for the development of 3D CAD models representing each structure.

IBC 08-17 - Initial Data Analysis of a Structural Health Monitoring System for Carbon Fiber Composite Strands in a Cable Stayed Bridge
Keith Berube, Roberto Lopez-Anido, PhD, PE, Vincent Caccese, Phd, PE, University of Maine, Orono, ME

The Penobscot Narrows cable stayed bridge design implemented in Prospect, Maine presented an opportunity to install Carbon Fiber Composite Cable (CFCC) strands as a test case. Since the long-term response of the CFCC strands was of vital concern, a structural monitoring system was incorporated during the cable installation. A brief description of the instrumentation used and an analysis of the data recorded to date are presented in this paper.

IBC 08-18 - Load Testing, Analysis and Structural Health Monitoring for Evaluating the Load Capacity of Aged RC Bridges
John Prader, Franklin Moon, Drexel University, Philadelphia, PA

The State of West Virginia has a large population of aged reinforced concrete bridges that lack documentation. These bridges are now being subjected to larer loads than their original designers intended. This paper is intended to provide an overview of the techniques and methods which were used to quantify the load capacity of two undocumented bridges.

IBC 08-19 - Simplified Head-On Dynamic Barge Collision Analysis for Bridge Design
Michael Davidson, Gary Consolazio, University of Florida, Gainesville, FL

A design-oriented means of conducting dynamic barge-bridge collision analysis is presented, validated using full-scale experimental data, and demonstrated using two bridges in the state of Florida. The impact analysis technique is shown to capture pier response phenomena, with respect to pier column internal forces, not found in static analysis results.

IBC 08-20 - Bridge Evaluation through Advanced Analysis and Nondestructive Field Measurements/Monitoring
Ed Zhou, URS Corporation, Gaithersburg, MD

This paper addresses advanced methods and technologies for bridge structural problems and concerns identified by regular inspections or other means. The methods include in-depth finite element analysis, field testing/measurements using strain/displacement transducers, structural health monitoring using a collection of advanced sensors, and combinations of them.

IBC 08-21 - Instrumentation and Load Test of the Huey P. Long Bridge
Thomas Weinmann, Danielle Kleinhans, Varsha Singh, CTLGroup, Skokie, IL

This paper describes the truss monitoring program for the widening of the Huey P. Long Bridge in New Orleans, consisting of a 900-ct. sensor array utilizing both static and dynamic systems, measurement of existing eyebar forces through vibration methods and load testing to calibrate the monitoring systems.

IBC 08-22 - New Jersey Turnpike Authority Next Generation Bridge Inspection Program
Jean Laird, W. Scott Johnson, New Jersey Turnpike Authority, Woodbridge, NJ

The New Jersey Turnpike Authority is one of the nation's largest toll-road systems and operates both the New Jersey Turnpike and the Garden State Parkway. In the past these two major roadways operated as separate entities and had developed different bridge inspection programs for the nearly 1,000 combined structures (over 20' in length). Organizing all of this information into paper and computer formats for the various stakeholders has proven to be a difficult challenge. The New Jersey Turnpike Authority has just embarked on a program to standardize the format of the reports. This is being accomplished by implementing a new computerized inspection and inspection management program that is capable of handling the wide variety of structure types, various consultants, and output needs. This presentation will examine a brief history of the Turnpike and Parkway and their respective bridge inventories and inspection programs.

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