Download 9th International Bridge Management Conference Easily In PDF Format For Free.
PREFACE:
this publication contains papers presented at the 9th International Bridge Management Conference held at the Orlando Airport Marriott Hotel, April 28–30, 2003, in Orlando, Florida. The conference was sponsored by the Transportation Research Board in cooperation with FHWA.
The objective of the conference was to provide a forum for the exchange of information about the state of the practice and state of the art in bridge management systems between practitioners and researchers in all levels of the public and private sectors.
This publication contains papers on bridge management concepts, strategies and health indices, asset management, joints, coatings and concrete repair, life - cycle costs, load testing, utilizing the Internet and performance measur es, deterioration and reliability, future directions and challenges in bridge management systems, management system implementation, safety and serviceability, scour modeling and experiences, expert systems and uncertainties, and concrete deterioration. The papers have not been subjected to the TRB peer review process.
optimal management strategies for a group of bridges that may incur damage from flooding during a 15-year period were determined using three approaches, and then the strategies were compared. The three approaches are the supply and demand system approach and two approaches used in existing bridge management systems: the supply bridge approach and the supply and demand bridge approach.
The comparison investigates the approaches’ abilities to determine optimal management strategies when multiple bridges are likely to be affected simultaneously.
With probabilistic concepts, the likelihood of inadequate service resulting from the damage was determined. The comparison shows that when bridges may be adversely affected simultaneously, the use of the supply and demand system approach can result in increased savings as compared with both the supply bridge approach and the supply and demand bridge approach.
The approaches to developing bridge management strategies in existing bridge management systems (BMSs) have placed limitations on these systems’ ability to find optimal management strategies.
A source of these limitations is orientation toward performance of an individual bridge rather than performance of the transportation network as a whole. One result of the approaches’ limitations is the inability to find optimal management strategies when multiple bridges may be adversely affected simultaneously, as a result of natural hazards such as floods and earthquakes.
A recently proposed supply and demand system (SDS) approach (1) can overcome this limitation. With the proposed SDS, optimal management strategy focuses on the ability of the network as a whole to provide an adequate level of service (LOS) and the expected additional costs (EAC) if an adequate LOSis not provided.
