Repair systems for deteriorated bridge piles : final report.
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2017-04-01
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Edition:Final report
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Abstract:The objective of this research project is to develop a durable repair system for deteriorated steel bridge piles that
can be implemented without the need for dewatering. A rigorous survey of the relevant practice nationwide was
conducted to inform and direct the remaining research efforts. The current state-of-practice was critically
reviewed and the most promising alternatives were identified for detailed investigation. The structural
performance, constructability, and economy of the existing systems were considered. A simplified but reliable
framework for assessing the condition of deteriorated piles is proposed. The framework was used to direct the
full-scale testing of artificially deteriorated and repaired piles. Accelerated environmental exposure tests were
conducted to evaluate the durability of the different repair systems. The results of the full-scale tests and the
environmental durability tests were used to inform a life-cycle cost analysis to identify the most economical
repair systems based on initial costs, life-cycle costs, agency costs, and user costs. To evaluate the performance
of the repair systems in ' real ' applications, a field installation was conducted. Based on the research findings,
guidelines for the design, construction, and maintenance of the systems will be developed to facilitate transfer of
the technology to TxDOT bridge maintenance operations.
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