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Showing 1 to 20 of 28 for “"Distribution Factors"”.
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Simplified live-load moment distribution factors for simple span slab on I-girder bridges
… assess various methods of computing live load distribution factors and to use the results of laboratory and field tests to compare these methods. It is further a goal of this work to use these methods to perform a parametric study over a wide range of typical slab on steel I-girder bridges to …
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Lateral Load Distribution Factors for Military Vehicles on Multi-Girder Deck Slab Bridge Systems
… specifications have prescribed lateral load distribution factors to calculate the bending moments and shear forces for the design of highway bridges for civilian highway traffic. The maximum bending moments and shear forces caused by a wheel line load (or the entire vehicle) placed on the …
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Live load distribution factors for multi-span girder bridges with plank decking subjected to farm vehicles
… simplified formulae to determine Live Load Distribution Factors (LLDFs) for highway bridges. The formulae for the AASHTO code-specified LLDFs have been developed, considering the effect of typical highway trucks. In addition to highway bridges, there are a large number of bridges located on …
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Characterization of Ohio Traffic Data for Integration into the Mechanistic-Empirical Pavement Design
… traffic (AADTT), (b) traffic volume adjustment factors (directional and lane distribution factors, vehicle class distribution, monthly adjustment factors, hourly truck distribution factors, and traffic growth factors), (c) axle load spectra by truck class (Class 4 to Class 13) and axle type …
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Measurement-based tools for power system monitoring and operations
… near real-time, up-to-date power system linear distribution factors and the power flow Jacobian matrix. Improvements and extensions to the general methodology are developed: (i) the number of required measurements is reduced in distribution factor estimation, (ii) distributed computation is …
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Field Test of a Bridge Deck with Glass Fiber Reinforced Polymer Bars as the Top Mat of Reinforcement
… Transverse strains in the GFRP bars, girder distribution factors, girder bottom flange strains, dynamic load allowances, and weigh-in-motion gauge results were examined. From the live load tests, it was concluded that the bridge was designed conservatively for service loads, with measured …
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Formation of uniform particles: Morphology and colloidal stability, and stable particle growth during precipitation from titanium alkoxides
… growth mechanism to provide narrow size distribution. Factors that control particle morphology in the absence and presence of shear and the mechanisms of growth of colloidally stable suspensions are discussed. Two factors are identified which control colloidal stability and precipitate …
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Conformational analysis and dielectric relaxation of polycarbosilanes and related materials
… In this method, a quantitative analysis of the factors affecting the nature and magnitude of the bond rotation potentials governing their conformational behaviour has been undertaken. Along with their structural data, the results obtained were employed to calculate a variety of …
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Development of lightweight FRP bridge deck designs and evaluations
… lamination theory, and maximum transverse load distribution factors were predicted. In addition, several failure modes were identified and theoretically correlated to obtain applicable limit states based on the strain to failure approach. The study found that local resistance and force transfer …
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Design analysis of single-span advanced composite deck-and-stringer bridge systems
… of deck-and-stringer system accounting for load distribution factors.
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Uncertainty and Confidence Intervals of the Monte Carlo Ray-Trace Method in Radiation Heat Transfer
… are developed to predict the uncertainty of the distribution factor from one surface to another, the global uncertainty of all the distribution factors in an enclosure, the uncertainty of the net heat flux from a surface, and the global uncertainty of the net heat flux from all the surfaces in an …
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Dynamic simulation of solar calibration of the total, Earth- viewing channel of the Earth Radiation Budget Experiment (ERBE)
… model consists of two elements: a radiation distribution factor model and a finite element model of the heat conduction process. The distribution factors, which lie at the heart of the simulation, distribute the thermal radiation incident to the instrument aperture over the diffuse-specular …
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Optical analysis of the ERBE scanning thermistor bolometer radiometer using the Monte Carlo method
… to the designated instrument field of view. Distribution factors between the diffuse-specular surfaces of the scanning radiometer are calculated using the Monte Carlo method and are then used to perform the radiative analysis. This analysis shows that less than three percent of the radiation …
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Fiber-Reinforced Polymer Bridge Girders for Extremely Aggressive Environments
… with a cast-in-place concrete deck. Girder distribution factors for moment were also computed using reliability analysis tools and FEM. These results were then compared to existing AASHTO methods. Once the most efficient cross-section was identified (U-shaped girder), a preliminary study …
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Small signal analysis of power systems: Eigenvalue tracking method and eigenvalue estimation contingency screening for DSA
… The new screening method extends the use of distribution factors commonly used in static security analysis (SSA) to DSA by using the factors with eigenvalue sensitivities to estimate the change in the eigenvalues due to a line outage. This method screens line outages by estimating the …
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Load Testing Deteriorated Spans of the Hampton Roads Bridge-Tunnel for Load Rating Recommendations
… to head. From the load test results, live load distribution factors were developed for both damaged and undamaged girders. The data was also used by the local Department of Transportation to validate computer models in an effort to help pass the load rating. Overall, this research was at the …
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Evaluation of Hybrid-Composite Beam for Use in Tide Mill Bridge
… non-linear behavior was observed in the beams. Distribution factors for the system were also investigated and compared to AASHTO and Hillman's model. AASHTO factors were conservative for exterior girders but unconservative for interior girders. Hillman's factors were often conservative but were …
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Performance of a Bridge Deck with Glass Fiber Reinforced Polymer (GFRP) Bars as the Top Mat of Reinforcement
… Transverse stresses in the GFRP bars, girder distribution factors, and dynamic load allowances were calculated for both spans. From the live load tests, it was concluded that the GFRP-reinforced span results were within design parameters. The only concern was the increased impact factor …
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Optimized FTR portfolio construction for market participants in a multi-period horizon
Financial transmission rights (FTR) are hedging instruments that entitle their holders to receive reimbursements from the independent system operator (ISO) for the congestion rents when congestion happens in the direction specified by the FTR source and sink nodes. In this thesis, we extend the …
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Distributed Fibre Optic Sensing to Assess Support Reactions and Behaviour of Composite Steel Bridges
… 79% of the truck load calculated using live load distribution factors from a design code. Load sharing between girders was found to have a greater effect when the truck was positioned further from the pier.
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