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Showing 1 to 20 of 20 for “"shear studs"”.
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Strength of welded shear studs
… were conducted to study the behavior of welded shear studs. Forty-eight solid slab push-out tests were conducted to study how stud tensile strength and concrete properties affect the strength of shear connections. It is shown that raising the tensile strength of a shear connector actually has an …
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Evaluation of Existing and New Test Configuration for Headed Shear Studs
… slab. To ensure proper composite action, shear connectors, typically in the form of headed shear studs, are utilized. Traditionally, the strength assessment of these headed shear studs is made using empirical design specifications that are based on push-out tests, which have been widely …
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On the Fatigue of Headed Shear Studs in Steel-Concrete Composite Bridge Girders
<p>Shear connectors are commonly used in steel bridges to join the concrete deck and steel superstructure, providing a mechanism for shear transfer across the steel-concrete interface. The most common shear connector is the headed shear stud. In the current AASHTO LRFD Bridge Specifications on …
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Static push-out tests and finite element studies on larger diameter shear studs for composite steel bridges
… link between the deck and the girders are shear studs welded to the girder top flange. The most commonly used shear studs have a 7/8-inch diameter and are welded to the top flange of the beam in a fabrication shop or in the field. A very large number of shear studs is typically needed to …
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Investigations into Flange Surface Friction Effects on Shear Stud Load Transfer in Composite Bridge Girders
… behavior is commonly achieved through headed shear studs welded tothe steel girder flange and embedded in the concrete deck. Current AASHTO provisions for estimating demands on shear studs during service-level loading consider only bearing load transfer, neglecting adhesion bonding and …
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Analysis of headless shear stud connections
… in the bridge deck to girder system is the steel shear stud connection, which is used to create composite action between the deck and the girder. Numerous researchers have studied this connection from a strength perspective, and the strength equations for the shear connection have been codified. …
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The effects of typical construction details on the strength of composite slabs
… from pour stops, and deck anchorage from shear studs and welds are investigated. The results of this experimental study are analyzed using methods given in the Steel Deck Institute Composite Deck Design Handbook. The models were found to conservatively predict the strength of the composite …
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The Viability of Steel-Concrete Composite Girder Bridges with Continuous Profiled Steel Deck
… composite steel girder bridges. However, because shear studs can only be welded to the girder through the steel deck at rib locations, the number of shear stud locations is limited to the number of ribs in the shear span while the spacing of the shear studs is restricted to the rib spacing of the …
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Behavior and Strength of Welded Stud Shear Connectors
The behavior and strength of welded shear studs are subjects of ongoing study. In recent years, research has shown that the American Institute of Steel Construction (AISC) specification equations for shear stud strength are unconservative for studs placed in deck with ribs transverse to the steel …
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Standoff Screws Used In Composite Joists
… Elco Grade 8 standoff screw as a mechanical shear connector in composite joists. Standoff screws are being investigated as an alternative to welded shear studs in short span composite joists. The data and results obtained from 106 pushout tests performed on the Elco Grade 8 standoff screw are …
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Further Investigation of Standoff Screws Used in Composite Joists
… Elco Grade 8 standoff screw as a mechanical shear connector in composite joists. Standoff screws are being investigated as viable an alternative to welded shear studs in short span composite joists. The data and results obtained from 59 pushout tests performed on the 5/16 in. diameter Elco …
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Longitudinal Slab Splitting in Composite Girders
… were used in the slab over each girder. Shear connectors were all 0.75 in. diameter headed shear studs of varying lengths. The results of these tests were used to determine the minimum amount of transverse reinforcement required to prevent longitudinal splitting from controlling the …
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Fatigue Performance and Shear Demand Distributions of Clustered Shear Connectors in Composite Bridge Girders
… (AASHTO) Bridge Specifications assumes uniform shear flow demands at the steel-concrete interface of composite bridge girders. As stud pitch increases to beyond 24 in or as studs become clustered to account for pre-cast concrete decks, this assumed shear demand distribution may be …
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Behavior and modeling of partially restrained beam-girder connections
… pieces of the connection such as bolts, shear studs, and welds. In general, the component model can be very computationally intensive. Consequently, a secondary objective of this research is to develop a connection model that is simpler to use. Behavior models for each of the connection …
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Numerical Modeling of Composite Systems: Composite CFT Connections and Composite Beams
… and their connections subjected to axial, shear, and flexural load. Predicting composite connection behavior is exceptionally challenging due to the coupled behavior of the steel and concrete, the residual stresses in the steel, local buckling of the connection, and the sensitivity of the …
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Experimental and analytical study of the shear transfer in composite shallow cellular floor beams
This research investigated the longitudinal shear transfer mechanism in composite shallow cellular floor beams. The shear transfer mechanism is different with the headed shear studs used in composite construction. The shear resisting properties and behaviour of the shear transfer mechanism has not …
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Large deformation structural performance of double skin composite construction using British Steel's 'Bi-Steel'
… usually, normal weight concrete. The transfer of shear between the steel and concrete is possible through the use of steel shear connectors that are welded to the steel plates. A study of previously published information revealed that the areas to market double skin composite construction would be …
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Structural Performance of Longitudinally Post-Tensioned Precast Deck Panel Bridges
… concerning the required post-tensioning force, shear stud pocket placement, and proper joint design. In a recent dissertation (Swenty 2009) numerous recommendations were made for joint design, shear stud pocket design, and post-tensioning force for full-depth precast deck panel bridges. Design …
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Fatigue and static behaviour of post-tensioned steel-concrete composite beams
… samples (steel beams, concrete flanges, and shear connectors), which enhanced the overall fatigue performance of the strengthened samples. However, the strengthened samples experienced longitudinal fatigue cracks in the concrete flanges because of PT while such cracks were not observed in the …
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Design and Behavior of Composite Steel-Concrete Flexural Members with a Focus on Shear Connectors
… members. The first part deals with a new type of shear connection in composite joists. Composite steel-concrete flexural members have increasingly become popular in design and construction of floor systems, structural frames, and bridges. A particularly popular system features composite trusses …