00183764

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http://onlinepubs.trb.org...trr/1978/664/664v1-025.pdf

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

An experimental facility to study the use of gravity operated heat pipes to couple earth heat to a bridge deck for snow and ice control has been developed at a site in southeastern Wyoming. Fifteen heat pipes of three different designs were incorporated in the design and construction of a composite bridge deck. Nine standard heat pipes 24.4 m (80 ft.) long and 2.5 cm (1 in.) outside diameter were installed transverse to the direction of traffic flow 5 cm (2 in.) below the deck surface on 15 cm (6 in.) centers. These pipes extend from depths of 15 m (50 ft.) in the earth up through the earth surface and through the edge of the deck to the bridge centerline. The performance of the heat pipe system has been monitored and recorded continuously at one minute intervals for over one year using a variety of instrumentation transducers and a digital data acquisition system. In addition the surface conditions on the deck and the adjacent roadway were recorded photographically at five minute intervals during daylight hours. The results obtained demonstrate that heat pipes can be an effective means of snow and ice control on bridge decks. /Author/

This paper appeared in Transportation Research Record No. 664, Bridge Engineering, Volume 1. Proceedings 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

01411057

pp 189-197

1978

Transportation Research Record

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

0309026962

Print

Figures (12) ; Photos; References (11) ; Tables (1)

Bridge decks; Bridge design; Bridges; Composite structures; Couplers; Deicing; Demonstration projects; Heat pipes; Monitoring; Photography; Snow and ice control; Structural design; Traffic flow

Bridges and other structures; Highways; Maintenance and Preservation

TRIS, TRB

Dec 3 1978 12:00AM

• ACOUSTIC EMISSION AND FATIGUE CHARACTERISTICS OF TYPICAL BRIDGE STEELS
• AN INVESTIGATION OF THE FATIGUE STRENGTH OF DECK SLABS OF COMPOSITE STEEL/CONCRETE BRIDGES
• BRIDGE DESIGN BY THE AUTOSTRESS METHOD
• CORRELATING BRIDGE DESIGN PRACTICE WITH OVERLOAD PERMIT POLICY
• DEEP IMPREGNATION OF CONCRETE BRIDGE DECKS WITH LINSEED OIL
• DETECTION OF DELAMINATION IN BRIDGE DECKS WITH INFRARED THERMOGRAPHY
• DEVELOPMENT OF A COMPUTERISED BRIDGE INVENTORY FOR A STATE ROAD AUTHORITY
• ENVIRONMENTAL STRESSES IN FLEXIBLY SUPPORTED BRIDGES
• EVALUATION AND POSTING OF BRIDGES IN ONTARIO
• EXTENDING THE SERVICE LIFE OF EXISTING BRIDGES
• EXTENSION OF LIFE FOR PERLEY BRIDGE
• FATIGUE CONSIDERATIONS FOR THE DESIGN OF RAILROAD BRIDGES
• FATIGUE CRACKS OF DEEP THIN-WALLED PLATE GIRDERS
• FATIGUE FAILURE MECHANISM OF REINFORCED CONCRETE BRIDGE DECK SLABS
• FATIGUE PROBLEMS IN HIGHWAY BRIDGES
• FATIGUE TESTS OF BOLTED CONNECTIONS DESIGNED BY SHEAR-FRICTION
• IN-PLANE AND OUT-OF-PLANE INSTABILITY OF A 297 M SPAN STEEL ARCH BRIDGE
• INVESTIGATION OF THE ULTIMATE STRENGTH OF DECK SLABS OF COMPOSITE STEEL/CONCRETE BRIDGES
• METHOD OF ASSESING HIGHWAY BRIDGES FOR SUPERLOADS
• ORTHOTROPIC BRIDGE SAVES OLD COVERED BRIDGE
• OVERLOADING OF HIGHWAY BRIDGES--INITIATION OF DECK DAMAGE
• PRECEPTS OF THE EVALUATION OF FACILITIES FOR HUMAN USE AND THE APPLICATION TO BRIDGE REPLACEMENT PRIORITIES
• RELIABILITY APPROACHES TO BRIDGE SAFETY AND TRUCK LOADING UNCERTAINTIES
• RENOVATION OF LIONS' GATE BRIDGE NORTH VIADUCT
• REPAIR OF POPLAR STREET COMPLEX BRIDGES IN EAST ST. LOUIS
• RETROFITTING FATIGUE DAMAGED BRIDGES
• SOME CONSIDERATIONS IN WIDENING AND REHABILITATION OF BRIDGES
• SYSTEMS APPROACH TO BRIDGE STRUCTURE REHABILITATION OR REPLACEMENT DECISION-MAKING
• SYSTEMS APPROACH TO BRIDGE STRUCTURE REPLACEMENT-PRIORITY PLANNING
• THE NEW MEXICO BRIDGE INSPECTION PROGRAM
• THE TRUE BEHAVIOR OF THIN CONCRETE BRIDGE SLABS
• UTILIZATION OF STRESS HISTORY DATA IN BRIDGE DESIGN
• WHAT HAS BEEN LEARNED FROM THE FIRST PRESTRESSED CONCRETE BRIDGES--REPAIR OF SUCH BRIDGES