When there is a torque equilibrium around the centre of the wheel, the following. For pavement design purposes all heavy commercial vehicles are expressed in terms of the equivalent number of standard axles that they represent. Deacon, assistant professor of civil engineering, university of kentucky. Axle load analysis for bituminous pavement design youtube. It is a single axle load with dual wheel carrying 80 kn load and the design of pavement is based on the standard axle load. Texas flexible pavement design system windows or aashto design procedure, darwin 3. Proper consideration of traffic loading in pavement design requires knowledge of the full axle load distribution by the main axle types, including single, tandem, and tridem axles.
The conversion of traffic to the esal is accomplished with the use of axle load equivalency factors. Pdf the effect of axle load spectra from aashto method. Axle load calculations general information about axle load calculations 04. Deen, assistant director of research, kentucky department of highways one significant means for evaluating the relative destructive effects of repetitive vehicular loading on highway pavements is. Pavement design guide me pdg utilizes axle load spectra to characterize the. Based on axle load studies previously undertaken in bangladesh, the following. For most pavements, the magnitude of the axle load is of greater importance than the gross. In this study, an artificial neural network was developed in order to analyze flexible pavement structure and determine its critical responses under the influence of standard axle loading. Calculate the load factor for each vehicle category 6. Pdf currently, methods used for pavement design are empirical and based on experiments conducted in the 1960s. Pavement thickness must be designed to withstand the anticipated traffic, categorized by type and weight of vehicles, and measured by average daily volume adv of each type for the design life of the pavement. The magnitude of the axle load and the number of load repetitions are major factors in the performance of a flexible pavement structure.
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