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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 46 for “"Composite Action"”.
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Reconsidering Composite Action on Strength of Wood Roof Systems
… compliance with current codes by reconsidering composite action, produced by the joist-sheathing interaction of the assembly, on the bending strength of joists. The effect of composite action can be quantified by considering a composite T-beam, with the wood joist being the web and the …
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Effect of composite action on the dynamic behaviour of space structures
The application of composite action ushered a new era in the use of double-layer spaceframes as efficient floor systems in addition to their competitiveness as roof coveringstructural systems. Earlier research on space frames demonstrated large improvementsin their static behaviour caused by the …
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Experimental Evaluation of Composite Action of Steel Box Truss Towers in Torsion
… at South Dakota State University to evaluate the composite action exhibited by steel box truss towers in torsion. Four tower configurations were constructed and tested. Strain, rotation, and load measurements were used to assess the performance of each configuration. The specimens were 32ft-6in …
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Experimental Evaluation of Composite Action of Steel Box Truss Towers in Flexure
… at South Dakota State University to evaluate the composite action exhibited by steel box truss towers in flexure. Three tower configurations, each with three specimens, were constructed and tested. Strain, slip, deflection, and load measurements were used to assess the performance of each …
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The influence of fastener spacing on the slip modulus between cold formed steel and wood sheathing
Composite action is the joint behavior of two elements connected or bonded together. It is a phenomenon that is utilized in several applications throughout engineering. Previous studies have shown that cold formed steel (CFS) sheathed with structural wood panels exhibits a degree of partial …
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Numerical and Experimental Investigations on Static Behaviour of Composite Cold-Formed Steel and Timber Flooring System
… widespread. However, the potential benefits of composite action that arise due to the interaction of the top flange of cold-formed steel joist and the bottom surface of timber floorboard due to shear connection are not considered in the design of such a flooring system. As a result, it led to …
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Determination of the Design Parameters for the Route 601 Bridge: A Bridge Containing the Strongwell 36 inch Hybrid Composite Double Web Beam
… determine if a bolted connection could develop composite action between the girder and the deck. This connection was shown to provide a significant amount of composite action when used with the 8 in. DWB and a composite deck, but little or no composite action when used with the 36 in. DWB and a …
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Investigation of Ultimate Strength of Composite Open-Web Joist-Girders
… was to study several methods of generating composite action using open-web joist-girders, designed and manufactured by Nucor Corporation. In addition to comparing the relative performance of these systems, it was intended to determine whether the current accepted design procedure for …
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Interface Shear Strength in Lightweight Concrete Bridge Girders
… part of this type of construction is developing composite action between the girder and deck. In order to develop composite action, adequate horizontal shear resistance must be provided at the interface. As lightweight concrete is increasingly being used in bridge designs, it is important to …
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Horizontal Shear Connectors for Precast Prestressed Bridge Decks
… is of primary importance in order to provide composite action. The strength of the bond between the two precast members should be high enough to prevent any progressive slip from taking place. Flexural strength, shear strength and deflection characteristics all depend on the satisfactory …
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Historic Steel Beam Reuse: A Case Study of a 100-year-old Warehouse
… to its self-weight. The low estimate assumes no composite action between the steel beams and concrete slab, while the high estimate assumes complete composite action. Even if composite action is neglected, the floor system can carry eight times the standard distributed live load value of 100 psf …
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Development of Innovative Hybrid Steel-Free Multi-Girder Bridge Deck System
… cross-bracing rods to provide transverse composite action between the adjacent girders. Small-scale experimental testing results led to the use of unbonded non-prestressed vertical GFRP threaded rod at the GFRP-UHPC interface in conjunction with an epoxy bonded coarse silica sand aggregate …
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A Modified AISC P -M Interaction Curve for Square Concrete Filled Tube Beam -Columns
… behavior of the pure steel columns and the composite columns. Considering the contribution of the concrete, a method to simulate the strength of the CFT beam-columns with much improved accuracy is presented. The method idealizes the P-M interaction curve of CFT beam-columns with two lines …
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Development of a Composite Concrete Bridge System for Short-to-Medium-Span Bridges
… to be one of the causes of deck cracking in composite bridges, a study on shrinkage and creep properties of seven deck mixes is presented with the goal of identifying a mix whose long terms properties reduce the likelihood of deck cracking. The effects of differential shrinkage at a …
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Influence of Bridge Parameters on Finite Element Modeling of Slab on Girder Bridges
… in the model, such as bridge skew, degree of composite action, thermal gradient and level of support restraint, on the response of bridges. First, the suitability of different modeling techniques and of elements used to model the primary bridge components was assessed using simple models for …
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Measurement and evaluation of the performance of an integral abutment bridge deck
… can be utilized to determine the degree of composite action of the deck and girders, and sister bars to measure strains in the reinforcement, which can be used to determine the status of the bonding between the reinforcement steel and the concrete deck. Sensor data is collected every 20 …
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Vibration based performance assessment of concrete-concrete composite bridges
Concrete composites consisting of precast pre-stressed standardized beams and a cast in-situ deck slab have been used for the construction of short to medium span bridges for the past four decades in South Africa and worldwide. The pre-cast beams and cast in-situ slab are commonly connected using …
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Evaluation of deck fasteners functioning as shear connectors for composite steel joists
The use of deck fasteners as shear connectors for composite open web steel joists is studied. Results of thirty-six push-off tests are evaluated in terms of strength and behavior. Six types of deck fasteners are considered. They are: 1. #12-24 Teks/5 self-drilling, self-tapping screws. 2. 1/4-14 …
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Analysis of the AASHTO LFRD Horizontal Shear Strength Equation
The composite action of a bridge deck and girder is essential to the optimization of the superstructure. The transfer of forces in the deck to the girders is done across a shear interface between the two elements. The transfer occurs through the cohesion of the concrete at the interface and then …
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