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Showing 1 to 12 of 12 for “"Lap Splice"”.
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Retrofit of deficient lap splice with post-installed anchors
… for efficient retrofit solutions, with deficient lap splices being one of many research areas. A possible method to increase the capacity of deficient lap splices is to use post-installed undercut anchors. These anchors function as active confinement in the splice region, potentially allowing …
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Lap Splice Development Length of Rebar in Stabilized Hollow Interlocking Compressed Earth Blocks
… the tensile performance of unconfined lap splices in specimens constructed from interlocking compressed earth block (ICEB) units. All lap splice specimens were constructed from hollow ICEB half units with one side grouting channel. ICEB units used in this research were exclusively …
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A Design Approach for Seismic Retrofit of Circular Bridge Columns With Lap Splices
… of the offset orientation of the bars in the lap splice. However, due to irregularities in the reinforcement details for the field columns the correlation was not obvious. Therefore, a laboratory investigation was undertaken in order to study the optimal amount of lateral confinement necessary …
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Confinement Limits For Tensile Lap Splices Under Static Loading
ABSTRACT In tension lap splices, the benefit provided to the lap by stirrups placed to intercept cracking due to bond splitting action is recognized by the American Concrete Institute (ACI 318-89) and the design recommendations of the ACI Committee 408, on which the American code provisions are …
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Non-Contact Lap Splices in Geometrically Dissimilar Bridge Column to Drilled Shaft Connections
Contact lap splices are widely used for the construction of reinforced concrete structures. But, it is often required to provide a reinforcing steel splicing arrangement with non-contact lap splices due to the limitation of internal space or geometric irregularity for the connection of non-circular …
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Analysis Methodology Determination For Calculating Load Distributions of Complex Fastened Joints
… Aviation Administration (FAA) for a two layer lap-splice fastened joint, 3) aerospace-industry proven Finite Element Analysis (FEA) processor NASTRAN, and 4) BoltJoint10, an FEA method created for the helicopter industry specifically for fastened joints. A basic lap-splice fastened joint was …
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Experimental and Analytical Investigation of Seismic Performance and Retrofit Techniques for Non-Ductile RC Structural Walls
… strategies, and barbell walls with inadequate lap splices. This dissertation is aimed at addressing this need through a combination of experimental and numerical investigations focused on non-ductile RC structural walls. Six non-ductile barbell experimental specimens were built and designed …
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Effectiveness of Alternative Reinforcing Strategies for Non-Contact Hooked Bar Lap Splices
… concrete. The pieces of concrete are joined by a lap splice which consists of longitudinal steel sticking out of each precast element and overlapped over the minimum required development length. State departments of transportation find it desirable to make the width of closure joints short. To …
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Assessing the Effectiveness of Reducing Seismic Vulnerability by a Program of Bridge Pier Wrapping
… the New Madrid area; (c) Damage will include lap splice failure of columns, beam or column shear failure, rocker bearing failure, excessive ground displacement, and significant superstructure misalignment; (d) A program of bridge pier wrapping can significantly reduce bridge functionality …
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Development of Improved Connection Details for Voided Slab Bridges
… The modified version should be a blockout with lap splice connection detail utilizing a nonproprietary fiber reinforced high strength concrete.
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Hooked Bar Anchorages and their Use in Noncontact Lap Splices
Lap splices are used in reinforced concrete structures to transfer tension forces across discontinuous reinforcing bars to allow for continuity of load path in structural elements. Lap splices of straight reinforcing bars present a number of disadvantages when used in connections of large precast …
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Non-Contact Lap Splices in Dissimilar Concretes
Non-contact lap splices placed within a single concrete placement are often used and have been studied in previous research projects. However, non-contact lap splices used with each bar in a different concrete placement such that there is a cold joint between the bars, have not been investigated. …