Pavement backcalculation modcomp
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Using the proposed approach, it will be possible for pavement engineers to characterize the non-linear, stress-dependent modulus of the pavement layers based on the NDT data in real time, identify the pavement defects, and better determine the appropriate rehabilitation strategy. The measurement of pavement surface deflections under moving loads can be used for evaluation of pavement structural condition. This paper proposes the use of an Adaptive-Network-based Fuzzy Inference System (ANFIS) combined with Finite Element Modeling (FEM) for inverse analysis of multi-layered flexible pavement structures subjected to dynamic loading. Discrepancies are attributed to the inability of replicating in laboratory tests the same consolidation and stress conditions encountered in the field.
#Pavement backcalculation modcomp software#
Over the past two decades, soft computing techniques such as Artificial Neural Networks (ANNs), Genetic Algorithms (GAs), and Fuzzy Logic Approach (FLA) have been applied in numerous civil engineering fields for pattern recognition, function approximation, etc. For validation, the results from the developed model were compared with typical backcalculation software of ISSEM4, MODCOMP, MODULUS, WESDEF, and BAKFAA as well as 386 LTPP sections. Currently, the only means of assessing the performance of a backcalculation algorithm is to compare its results with the values obtained through laboratory measurements of core samples. back-calculation was (and still is today) performed by a software packages such as ELMOD, MODCOMP and MODULUS, which are basically linear elastic multi-layer, very similar to ELSYM5 (RR 93/269, 1997). 55 cannot realistically simulate the behavior of pavement structure, the layer properties 56 determined from the backcalculation may be unreasonable. This involves computing the Young’s modulus of each layer of the pavement structure through inverse analysis of acquired NDT data. INTRODUCTION OF NEW ROAD PAVEMENT RESPONSE MODELLING SOFTWARE BY MEANS OF BENCHMARKING J.W. Deflection basin parameters, such as the. Non-destructive test (NDT) methods are typically employed to routinely evaluate the structural condition of pavement structures, their lifespan and the appropriate maintenance activities to be carried out. The backcalculation of estimated moduli values of pavement layers can be accomplished with the program.
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The load-bearing capacity of pavement structures is a fundamental structural performance metric of transportation infrastructure networks in the context of safe and efficient movement of people and goods from one place to another.