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Showing 1 to 20 of 38 for “"reliability index"”.
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Target reliability index optimization framework for building classes
… is illustrated for optimizing the target reliability indexes of office and hospital building classes exposed to seismic hazard, with minimizing regional economic cost as the objective.
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Reliability Analysis of the HEC-18 Scour Equation and AASHTO Deep Foundation Design Codes
<p>This research project studied the reliability of driven pile foundations subjected to scour, gravity loads including dead loads and live loads, and their combinations. The design of the foundation followed the procedures of the AASHTO LRFD Bridge Design Specification. The design methods were the …
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Analysis of the AASHTO LFRD Horizontal Shear Strength Equation
… and calculated for use in calculating the reliability index. The final step was to compute the reliability index for each category. The process was repeated to learn the reliability of the equation proposed by Wallenfelsz. The results showed that the reliability index for the AASHTO LRFD …
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Comparative study of LRFR and LFR methods of rating for Missouri concrete bridges
… between the LRFR rating factor and the reliability index, obtained from the reliability analysis of the bridge. Utilizing AASHTOWare BrR v7.1 for bridge rating analyses across a sample of concrete bridges in Missouri, this research determined that the rating load and the number of …
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Reliability of reinforced concrete beams in torsion
… evaluated. Advanced first-order, second-moment reliability analysis is used to compute the reliability index. Reinforced concrete beams, subjected to both equilibrium and compatibility torsion, are analyzed. The uncertainties associated with the various torsion design parameters are included in …
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Reliability Analysis of Carbon Fiber Reinforced Polymer (CFRP) Strengthened Steel Beams
… techniques used to produce the joints. Reliability analysis of adhesively bonded CFRP-to-steel double-lap shear (DLS) joints with thin outer adherends was performed first, to study the bond behavior when dominated by adhesive shear stresses. A comprehensive experimental database of the …
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Load and resistance factor design for wood structures
… based design format for wood members. Reliability analysis of wood structural elements such as beams, columns, and beam-columns is conducted, and the risk level is measured by the reliability or safety index, β. Wood members subjected to dead plus live load and dead plus snow load …
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Shear Reliability Analysis of Reinforced Concrete Bridges Designed to TMH7
… in question. This study investigates the shear reliability performance of TMH7 using heavy vehicle weigh-in-motion (WIM) data. The study is limited to normal traffic conditions and single-span reinforced concrete bridges. Reliability analyses were performed for two case studies: First case study …
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Reliability-Based Design Optimization of Nonlinear Beam-Columns
… ultimate strength, structural optimization and reliability analysis using ultimate strength analysis, and Reliability-Based Design Optimization (RBDO) of the nonlinear beam-columns. The ultimate strength analysis is based on nonlinear beam theory with material and geometric nonlinearities. …
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Determination of reliability indices for congestion on urban arterial streets
… The objective of this thesis is to develop a reliability index quantifying the spatial and temporal distribution of traffic congestion on urban arterial streets. Delays caused due to recurrent and non-recurrent congestion need to be differentiated. Two approaches for estimating road network …
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Structural loading of cross deck connections for trimaran vessels
… connected box barges. The design loadings with a reliability index of 5 for almost 500 trimaran configurations were calculated varying main hull length, side hull length, side hull transverse placement, and side hull longitudinal placement. The design loadings were curve fit to a fourth order …
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Power System Reliability Analysis with Distributed Generators
Reliability is a key aspect of power system design and planning. In this research we present a reliability analysis algorithm for large scale, radially operated (with respect to substation), reconfigurable, electrical distribution systems. The algorithm takes into account equipment power handling …
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A teacher behavior instrument for a multidimensional teaching model
… was to establish and describe the validity and reliability of an instrument based on a model of teaching behaviors conceived as magnetic lines of force.Content validity was established by reviewing the literature and identifying possible teaching behaviors which researchers felt contributed to …
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Elastic Stability Of Flexural Members In Civil Engineering Design
… issues occur in terms of strength prediction. A reliability analysis is performed from this data to quantify the difference in terms of the reliability index using a Monte Carlo Simulation. The results of the analysis show large discrepancies between the results produced by the code and those …
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Size Optimization of Utility-Scale Solar PV System Considering Reliability Evaluation
… cost subject to the constraint that the system reliability requirements. Due to the stochastic characteristic of the solar irradiation, the reliability performance of a power system with PV generation is quite different from the one with only conventional generation. Basically, generation …
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An effective optimisation method for multifactor and reliability-related structural design problems
… is demonstrated in two case studies.Next, a reliability-related multi-factor optimisation method is proposed and developed, representing a combination of MOST (as a method of multi-factor optimisation) and the reliability-loading case index (RLI) (as a method of calculating the reliability …
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Reliability Analysis of Tailings Storage Facility Embankments: Investigating the Effect of Zonation on Slope Stability
… may lead to misleading assessments of safety and reliability. This study examines how stratigraphic zoning, defined as the subdivision of the embankment into zones of distinct hydraulic and mechanical characteristics, influences probabilistic evaluations of TSF stability. Three conceptual …
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Dynamic service recovery in a grid environment
… the replication approach depends on how well a reliability index can be used to dynamically select two services of high reliability to serve an incoming service request. The service with higher reliability between the two selected services becomes the primary service while the other one becomes …
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Dynamic service recovery in a grid environment
… the replication approach depends on how well a reliability index can be used to dynamically select two services of high reliability to serve an incoming service request. The service with higher reliability between the two selected services becomes the primary service while the other one becomes …
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Time-dependent reliability methodologies with saddlepoint approximation
… properties and time-variant loads. Therefore the reliability of engineering systems becomes time-dependent. It is crucial to predict the time-dependent reliability in the design stage, given possible catastrophic consequences of a failure. Although extensive research has been conducted on …
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