SPRING-LOADED PLATES IN PRECAST BRIDGES
UNTERSUCHUNG VON FEDERPLATTEN BEI FERTIGTEILBRUECKEN
THE USE OF PRECAST MAIN GIRDERS IN BRIDGE CONSTRUCTION IS ONLY CONSIDERED EQUAL IN QUALITY TO CAST IN SITU CONCRETE BRIDGES IF, IN THE CASE OF MULTISPAN BRIDGES, THE CONCRETE DECK SLAB IS PULLED CONTINUOUSLY OVER THE ENDS OF THE PRECAST GIRDER. TO BALANCE OUT THE MOVEMENTS OF THE GIRDER, THE DECK SLAB IS SEPARATED FROM THE GIRDERS BY ABOUT 1.50 M THROUGH A SLOT, VIA INTERIM SUPPORTS; THIS FORMS A FLEXIBLE "SPRING-LOADED PLATE". UP TO NOW THIS HAS BEEN USED PREDOMINANTLY, IN THE CASE OF 1 TO 3 SPAN BRIDGES, WITH RELATIVELY SLENDER PRECAST GIRDERS PACKED TIGHTLY TOGETHER. NO ACCURATE THEORETICAL STUDIES HAVE BEEN MADE OF THE STRESS ON THE SPRING-LOADED PLATE, AND THERE ARE VERY FEW PRACTICAL STUDIES. HOWEVER, IT WAS ESTABLISHED BY INSPECTING SMALL BRIDGES IN BAVARIA BUILT BEFORE 1965 THAT THE SPRING-LOADED PLATES HAVE NOT BEEN DAMAGED. THE OBJECT OF THIS PROJECT IS TO MAKE A MATHEMATICAL STUDY OF SPRING-LOADED PLATES UNDER ALL CONDITIONS WHICH OCCUR, INCLUDING IN LONG BRIDGES WITH LARGE DISTANCES BETWEEN THE GIRDERS. MEASUREMENTS ON A COMPLETED STRUCTURE AND MODEL TESTS ARE ALSO TO BE UNDERTAKEN.
Language
- German
Project
- Status: Active
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Contract Numbers:
ITRD 15.080 R 78 D
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Sponsor Organizations:
BUNDESMINISTER FUER VERKEHR (FEDERAL MINISTER OF TRANSPORT)
POSTFACH 20 01 00
BONN, DEUTSCHLAND BR D-5300 -
Project Managers:
Grassl, H
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Performing Organizations:
INGENIEURBUERO DR.-ING. HANS GRASSL (ENGINEERING BUREAU DR.-ING. HANS GRASSL)
GAISBERGSTR. 7
MUENCHEN, DEUTSCHLAND BR D-8000 - Start Date: 19790000
- Expected Completion Date: 0
- Actual Completion Date: 0
- Source Data: ITRD D701829
Subject/Index Terms
- TRT Terms: Bridge decks; Bridges; Calculation; Continuous structures; Elasticity (Mechanics); Measurement; Precast concrete; Prestressed concrete; Research projects; Slabs
- ITRD Terms: 3455: Bridge; 3482: Bridge deck; 6464: Calculation; 9006: Continuous; 5912: Elasticity; 6136: Measurement; 4792: Precast concrete; 4796: Prestressed concrete; 8557: Research project; 3491: Slab
- Subject Areas: Bridges and other structures; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01294454
- Record Type: Research project
- Source Agency: Bundesanstalt für Straßenwesen (BASt)
- Contract Numbers: ITRD 15.080 R 78 D
- Files: ITRD
- Created Date: Nov 21 2010 4:35AM