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Axle Load Variations and Vehicle Growth Projection Models for Safety Assessment of Transportation Structures

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TLDR
In this article, the authors developed a load spectra for vehicular data from Interstate 95 (I‐95) in New York State in the US and evaluated the performance of their approach on the data from India.
Abstract
The design formulations of pavements and bridges are significantly influenced by the uncertainties associated with the prevailing vehicle weight characteristics. Accurate modelling of load spectra and the estimation of possible vehicle growth and composition are the main components in the safety assessment of transportation structures. The vehicle weights from the existing traffic form the basis for load spectra development, and the vehicle projections are subjective to the socio‐economic conditions. In this paper, the methodologies of appropriate data consideration for such representation are discussed and demonstrated based on the data from India. The load spectra are also developed for vehicular data from Interstate 95 (I‐95) in New York State. In lieu of the current status of the design codes for pavements and bridges worldwide, most of the developing countries are in need of analogous models for the calibration of the design basis.

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Effect of reclaimed asphalt pavement gradation variation on the homogeneity of recycled hot-mix asphalt

TL;DR: In this article, the authors presented an algorithm for predicting the composition of mineral constituent of recycled hot-mix asphalt, taking into consideration the variation of gradation of all mineral materials and reclaimed asphalt pavement, in the absence of random batching errors.
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The bitumen batching system's modernization and its effective analysis at the asphalt mixing plant

TL;DR: In this article, the optimal amount of bitumen determined by calculation and laboratory testing should be maintained in mix batches of hot-mix asphalt (HMA) obtained from AMP mixer, in the periodic type of the asphalt concrete blender mass of the weighted matrix in the all merging batcher's tanks should correspond in percents equally in the HMA to the designed amount of the jobmix formula (JMF).
Journal ArticleDOI

Fatigue Performance Assessment of Composite Arch Bridge Suspenders Based on Actual Vehicle Loads

TL;DR: In this article, a finite element model of the bridge structure is constructed to determine the influence line of the cable force for various suspenders, and then the stress amplitude spectrum is obtained based on the statistical analysis of the stress process using the rainflow counting method.

Comparative study of flexible and rigid pavements for different soil and traffic conditions

TL;DR: In this article, a study was done to convert the traffic load given in msa into axle load distribution (ALD) and vice-versa, and the critical line of equal costs on the plane of CBR versus msa was identified.
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Determination of Virgin Asphalt Mixture Content in Hot In-Place Recycling Based on Field Rutting Depth Variability

TL;DR: In this paper , a method to estimate the quantities of VAM needed for areas with rutting along the driving direction is proposed to verify the feasibility of the proposed method and explore the effects of varying VAM content caused by rutts depth (RD) distribution variation on construction quality.
References
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Book

Numerical Optimization

TL;DR: Numerical Optimization presents a comprehensive and up-to-date description of the most effective methods in continuous optimization, responding to the growing interest in optimization in engineering, science, and business by focusing on the methods that are best suited to practical problems.
Book

Probability Concepts in Engineering Planning and Design

TL;DR: This research attacked the mode confusion problem by developing a modeling framework called “model schizophrenia” to estimate the posterior probability of various modeled errors.
Book

Trust Region Methods

TL;DR: This chapter discusses Trust-Region Mewthods for General Constained Optimization and Systems of Nonlinear Equations and Nonlinear Fitting, and some of the methods used in this chapter dealt with these systems.
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A Subspace, Interior, and Conjugate Gradient Method for Large-Scale Bound-Constrained Minimization Problems

TL;DR: A subspace adaptation of the Coleman--Li trust region and interior method for solving large-scale bound-constrained minimization problems and under reasonable conditions the convergence properties are as strong as those of its full-space version.
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