FATIGUE TESTS OF PLATES AND BEAMS WITH STUD SHEAR CONNECTORS
THE PRIMARY OBJECTIVE OF THE TESTS REPORTED IN THIS PAPER WAS TO STUDY THE EFFECT OF SHEAR CONNECTORS ON THE FATIGUE LIFE OF COMPOSITE CONSTRUCTION UNDER CIRCUMSTANCES WHERE THE CONNECTORS ARE ATTACHED TO THE TENSION FLANGE AND TO STUDY THE INFLUENCE OF FLANGE MATERIAL ON THIS BEHAVIOR. TO STUDY THESE TWO PROBLEMS WORK WAS UNDERTAKEN ON SEVERAL DIFFERENT MATERIALS WITH VARYING CHEMICAL COMPOSITIONS AND WITH DIFFERENT STRENGTH LEVELS. THE PROGRAM INCLUDED A RATHER EXTENSIVE SERIES OF TESTS ON FLAT PLATE SPECIMENS FABRICATED FROM TWO DIFFERENT MATERIALS . FOR THE DIFFERENT TYPES OF MATERIALS STUDIED, ONE OR MORE STUD SHEAR CONNECTORS WERE ATTACHED IN A SINGLE LINE TRANSVERSE TO THE DIRECTION OF STRESS. ANOTHER VARIABLE, INTENDED TO PERMIT A STUDY OF THE EFFECT OF STUD SPACING, WAS THE WIDTH OF THE PLATE. IN ONE SERIES OF TESTS THE WELDING PROCEDURE USED TO APPLY THE STUDS WAS ALTERED. FLAT PLATE FATIGUE TESTS WERE CONDUCTED ON STRESS CYCLES OF COMPLETE REVERSAL, ZERO-TO-TENSION AND PARTIAL TENSION-TO TENSION. A FEW SUPPLEMENTARY TESTS WERE CONDUCTED TO INVESTIGATE THE EFFECT OF GEOMETRY IN THE REGION OF THE CONNECTION BETWEEN THE PLATE AND THE STUDY SHEAR CONNECTOR. THE SECOND PHASE OF THE PROGRAM WAS CARRIED OUT ON NINE BEAM SPECIMENS, WHICH WERE DIVIDED INTO THREE GROUPS OF THREE GROUPS OF THREE BEAMS EACH. ALL BEAMS WERE LOADED IN SUCH A MANNER THAT THE FLANGE TO WHICH THE STUD SHEAR CONNECTORS WERE ATTACHED WAS SUBJECTED TO A TENSILE STRESS. ONE GROUP OF BEAMS WAS TESTED WITHOUT ANY STRESS APPLIED TO THE SHEAR CONNECTORS, THE OTHER TWO SERIES OF BEAM TESTS USED DIFFERENT LOADING METHODS TO STUDY BENDING OF THE BEAM AND FLEXING OF THE STUD SIMULTANEOUSLY. THE RESULTS OF THE INVESTIGATION ARE REPORTED IN THE FORM OF S-N DIAGRAMS FOR THE VARIOUS PARAMETERS INVESTIGATED. A COMPARISON BETWEEN THE FLAT PLATE TESTS AND THE BEAM TESTS IS INCLUDED, ALONG WITH A DISCUSSION OF SUPPLEMENTARY INFORMATION OBTAINED DURING THE CONDUCT OF THE TESTS. THIS INFORMATION IS CONCERNED PRIMARILY WITH THE EFFECTIVENESS OF THE REINFORCING STEEL IN THE CONCRETE, STRAIN DISTRIBUTION THROUGH THE DEPTH OF THE STEEL BEAM, AND METALLURGICAL INVESTIGATIONS TO STUDY THE INFLUENCE OF THE STRUCTURE IN THE HEAT-AFFECTED ZONE. ON THE BASIS OF THE TESTS RESULTS SOME SUGGESTIONS ARE MADE FOR THE UTILIZATION OF STUD SHEAR CONNECTORS IN REGIONS OF NEGATIVE MOMENT.
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Supplemental Notes:
- 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.
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Authors:
- STALLMEYER, J E
- Munse, W H
- Selby, K A
- Publication Date: 1965
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 254-284
- Monograph Title: Design - Bridges and Structures
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Serial:
- Highway Research Record
- Issue Number: 76
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Alternatives analysis; Beams; Composite construction; Concrete tests; Fasteners; Fatigue (Mechanics); Fatigue tests; Flanges; Flexural strength; Geometry; Loads; Materials; Metallography; Reinforcing steel; Shear reinforcement; Strain (Mechanics); Stresses; Structural plates; Structural tests; Studs; Tension; Testing; Welding; Width
- Uncontrolled Terms: Fatigue life; Loading; Plates; Shear connectors; Tensile stress
- Old TRIS Terms: Flat plate models; Stress cycle
- Subject Areas: Bridges and other structures; Highways; Materials;
Filing Info
- Accession Number: 00207708
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Dec 12 1994 12:00AM