PREDICTION OF PREFERENTIAL ICING CONDITIONS ON HIGHWAY BRIDGES

PREFERNENTIAL ICING OF BRIDGES, I.E., THE FREEZING OF BRIDGES BEFORE THE APPROACHES, INVOLVES THE INTERACTION OF A NUMBER OF VAIABLES SUCH AS LOCATION, WEATHER CONDITIONS THERMAL PROPERTIES OF THE BRIDGE STRUCTURE, AND TRAFFIC DENSITY. EFFORTS TO CORRELATE THESE VARIABLES OF WEATHER, GEOGRAPHIC LOCATION, AND BRIDGE DECK THERMAL PROPERTIES THAT LEAD TO PREFERENTIAL ICING ARE RESEARCHED. A BRIDGE DECK OVER A STREAM WAS INSTRUMENTED TO GATHER DATA ON A CONTINUOUS BASIS THROUGHOUT THE WINTER OF 1969 AND 1970. THE FIELD STUDY WAS SUPPLEMENTED WITH A COMPUTER SIMULATION OF THE HEAT FLUX IN BRIDGE DECKS AND WITH MEASUREMENTS ON A DECK SECTION IN THE COLD ROOM. WITH REPRESENTATIVE WEATHER DATA AND KNOWLEDGE OF THE THERMAL CHARACTERISTICS OF THE BRIDGE STRUCTURE, IT SHOULD BE POSSIBLE TO CONSTRUCT A PROBABILISTIC MODEL TO PREDICT THE NUMBER OF DAYS PER YEAR THAT ICING WILL OCCUR. SUCH A MODEL WILL BE USEFUL TO THE HIGHWAY ENGINEER IN DEVISING AN ECONOMICALLY JUSTIFIABLE COUNTERMEASURE. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 27-35
  • Monograph Title: Snow removal and ice control research
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00218680
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Feb 8 1971 12:00AM