Design and implementation of load cell bearings to measure dead and live load effects in an aged long span bridge

N. Dubbs, F. Moon, A. E. Aktan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In the spring of 2010, the expansion bearings of the Burlington-Bristol Bridge were replaced due to a poor condition rating (that caused the bridge to be classified as structurally deficient). The replacement of these bearings represented a unique opportunity to configure the new bearings to monitor the dead load and live load actions as well as their variation with environmental conditions. Towards that end, a series of trial designs were developed with various bearing types, load cell configurations, etc. These candidate designs were then evaluated through a series of finite element analyses and a single design was selected. To validate the selected design, a prototype was developed and tested in the laboratory under various axial forces, unidirectional and bidirectional moments, and shear forces. Once validated, 14 "smart bearings" were fabricated and installed on the Burlington-Bristol Bridge. To verify their proper operation, a series of load tests were carried out following installation. This paper and presentation will detail the development and validation activities for the "smart bearings" as well as the results from the first few months of long-term monitoring. In addition, non-technical challenges associated with developing appropriate design and performance specifications for the bearings will be discussed.

Original languageEnglish (US)
Title of host publicationBridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management
Pages696-702
Number of pages7
StatePublished - Dec 1 2010
Externally publishedYes
Event5th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2010 - Philadelphia, PA, United States
Duration: Jul 11 2010Jul 15 2010

Publication series

NameBridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management

Other

Other5th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2010
CountryUnited States
CityPhiladelphia, PA
Period7/11/107/15/10

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Building and Construction

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    Dubbs, N., Moon, F., & Aktan, A. E. (2010). Design and implementation of load cell bearings to measure dead and live load effects in an aged long span bridge. In Bridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management (pp. 696-702). (Bridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management).