51 research outputs found
Nominal Curvature Design of Circular HSC Columns Confined with Post-tensioned Steel Straps
This article proposes new parameters for the practical design of circular high-strength concrete (HSC) columns confined with an innovative Steel Strapping Tensioning Technique (SSTT) using a nominal curvature approach. Previous experimental research has proven the effectiveness of the SSTT at providing active confinement and enhancing the ductility of HSC columns, but to date no practical procedures are available so that the technique can be widely adopted in design practice. The proposed design approach is based on results from segmental analyses of slender SSTT-confined circular columns subjected to eccentric loads. The results obtained from the analyses are used to determine the variables governing the design of such columns. The use of the proposed design parameters predicts conservatively the capacity of small-scale slender HSC circular columns confined using the SSTT, and can be thus used in the practical design of reinforced concrete (RC) structures
Strength model for end cover separation failure in RC beams strengthened with near-surface mounted (NSM) FRP strips
Augmentation of mechanical and bond strength of coconut shell concrete using quarry dust
Data of the properties of rebar steel brands in Lagos, Nigerian market used in reinforced concrete applications
Finite Element Modelling of Headed Stud Shear Connectors in Steel-Concrete Composite Beam
In steel-concrete composite construction, headed stud shear connectors are commonly used to transfer longitudinal shear forces across the steel-concrete interface. Present knowledge of the load-slip behavior of the shear stud in composite beam is limited to data obtained from the experimental push-off tests. A finite element model to simulate the structural behavior of headed stud shear connector in steel-concrete composite beam is described in the chapter. The model is based on finite element method and takes into account linear and nonlinear behavior of the materials. The model has been validated against test results and compared with data given in the current Code of Practices, for which both demonstrate the accuracy of the model used. Parametric studies using the model to investigate variations in concrete strength and shear stud diameter are also discussed in the chapter. The model takes into account the linear and nonlinear material properties of the concrete and shear stud. The FE results compare well with the experimental push-off test results and specified data from the codes. The FE model accurately predicts the mode of failure
Development of a remaining useful life (RUL) model for reinforced concrete beams subjected to high-cycle fatigue
A case study of the structural responses of a tall building in Singapore subjected to close-in detonations
Flexural behavior of corroded reinforced concrete beam strengthened with jute fiber reinforced polymer
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