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http://onlinepubs.trb.org...r/1978/665v2/665v2-032.pdf

https://scholar.google.co...cGee&publication_year=1978

Highway and railway bridges spanning navigable waterways face the real possibility of being accidentally struck by large ocean-going vessels or large barge trains. In many cases, these accidents can result in serious damage to the bridges, blockage of the waterways, economic losses to communities served by the bridges and waterways, and loss of property and life. Two basic types of systems might be used to help prevent ships from striking bridge supports. The fender system is sometimes deployed around vulnerable bridge supports, but this approach is not always practical nor cost effective. An electronic warning system is a viable alternative or complement to the fender system. The electronic system could continuously monitor the ship's position relative to a safe corridor for passage under the bridge and issue an immediate warning of any deviation from a safe-passage course. The system could also issue warnings to the bridge tender and people on the bridge when a collision is determined to be unavoidable. An advanced design concept of such a system was developed by the Georgia Institute of Technology Engineering Experiment Station (GIT/EES) during a recent study. The study uses a shore-based radar and shore-based display as the most practical concept for an electronic collision avoidance/warning system. The radar would determine the ship's position, and the displays would inform the ship's pilot of the ship's position relative to a safe-passage corridor. The system would continuously assess the potential for collision during the various stages of the ship's passage. Ship speed and trajectory would be monitored as the ship approached the bridge; this information could be displayed for use by the ship crew in navigating the channel. When the ship approached closer to the bridge and entered a critical maneuver zone, the system would continue displaying the ship position while performing trajectory calculations to determine the possibility of a collision with the bridge. Should the system determine that a collision is possible (given the ship's handling characteristics and position in the channel, tide and wind conditions, and distance from the bridge), an alarm would be sounded to alert the ship crew, the bridge tender, and those on the bridge. Safety systems such as gates could be activated to keep additional traffic off the endangered bridge span. Although the design concept was developed for the protection of highway bridges, it could be easily adapted for the protection of railway bridges.

This paper appeared in Transportation Research Record No. 665, Bridge Engineering, Volume 2. Proceeding of a conference conducted by the Transportation Research Board, September 25-27, 1978.Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01489599

pp 258-260

1978

Transportation Research Record

Bridge Engineering Conference, 1st, 1978, St Louis, Missouri, USA

0309026970

Print

Figures (1) ; Photos

Barge operations; Bridge design; Bridges; Crashes; Detectors; Electronics; Information display systems; Inland waterways; Maneuverability; Navigation; Radar; Safety; Ships; Structural design; Warning devices; Warning systems; Waterways

Bridges and other structures; Highways; Marine Transportation; Safety and Human Factors; Vehicles and Equipment

TRIS, TRB

Dec 12 1978 12:00AM

• A CRITICAL EXAMINATION OF THE WAVE EQUATION
• AERODYNAMIC STABILITY OF TWO CABLE-STAYED BRIDGES
• ANALYSIS AND TESTING OF A TRAPEZOIDAL BOX GIRDER BRIDGE
• APPLICATION AND DESIGN OF PRESTRESSED DECK PANELS
• APPLICATION OF PREFABRICATED HOLLOW STEEL DECKS TO BRIDGE CONSTRUCTIONS
• CONCRETE CABLE-STAYED BRIDGES
• CURRENT PRACTICE IN DESIGN AND INSTALLATION OF DRIVEN PILES
• DEVELOPMENT OF A SIMPLIFIED METHOD OF LATERAL LOAD DISTRIBUTION FOR BRIDGE SUPERSTRUCTURES
• DYNAMIC RESPONSE OF A SINGLE TRACK RAILWAY TRUSS BRIDGE
• DYNAMIC RESPONSE OF BRIDGES
• ECONOMICAL STRUCTURES FOR LOW-VOLUME ROADS
• FATIGUE TESTS OF PRESTRESSED GIRDERS WITH BLANKETED AND DRAPED STRANDS
• INCREASING THE SEISMIC RESISTANCE OF EXISTING HIGHWAY BRIDGES
• LABORATORY AND FIELD STUDIES OF A PEDESTRIAN BRIDGE COMPOSED OF GLASS REINFORCED PLASTIC
• METHODS OF CALCULATION OF THE WIND-INDUCED RESPONSES OF SUSPENDED-SPAN BRIDGES
• MODEL STUDIES OF DOUBLE-CELL BOX GIRDER BRIDGE WITH INTERMEDIATE DIAPHRAGMS
• MULTIPLE SERVICE LEVEL BRIDGE RAILINGS--PERFORMANCE AND DESIGN CRITERIA
• PRACTICAL BRIDGE RETROFIT CONCEPTS TO REDUCE DAMAGE PRODUCED BY SEISMIC MOTIONS
• RECENT DEVELOPMENT OF CONSTRUCTION TECHNIQUES IN CONCRETE BRIDGES
• REDUCING THE RISK OF CATASTROPHIC BRIDGE FAILURES
• SEGMENTAL AND STAGE CONSTRUCTION OF PRESTRESSED CONCRETE BOX GIRDER BRIDGES
• SEGMENTAL BRIDGE CONSTRUCTION IN WESTERN EUROPE--IMPRESSIONS OF AN IRF STUDY TEAM
• STRUCTURAL PROBLEMS FOR THE MESSINA NARROWS BRIDGE
• SYSTEMS CONSTRUCTION TECHNIQUES FOR SHORT-SPAN CONCRETE BRIDGES
• TEST RESULTS FROM THE CONESTOGO RIVER BRIDGE
• THE DESIGN AND CONSTRUCTION OF THE NEW RIVER GORGE BRIDGE
• THE DEVELOPMENT OF THE ONTARIO HIGHWAY BRIDGE DESIGN CODE
• TRAFFIC LOADING OF LONG SPAN BRIDGES
• TRANSVERSE POST-TENSIONING OF LONGITUDINALLY LAMINATED TIMBER BRIDGE DECKS
• WEB STRESSES IN PRESTRESSED CONCRETE BRIDGE BEAMS HAVING DISCONTINUOUS TENDONS