Title: DETERMINATION OF PNEUMATIC TYRE/PAVEMENT INTERFACE CONTACT STRESSES UNDER MOVING LOADS AND SOME EFFECTS ON PAVEMENTS WITH THIN ASPHALT SURFACING LAYERS
Abstract: This paper describes the quantification of three-dimensional tyre/pavement contact stresses for vehicle tyres. The Vehicle-Road Surface Pressure Transducer Array (VRSPTA) system was developed to measure contact stresses under moving loads, i.e., Stress-In-Motion (SIM). Prediction equations for quantification of these stresses, based on tyre inflation pressure and loads for seven different tyre types, are given. Tyre inflation pressure predominantly controls the vertical contact stresses on the pavement at the tyre centre, whereas the tyre load controls those at the tyre edges. Analysis indicated that during instantaneous overloading/under-inflated conditions the maximum strain energy of distortion (SED) in the asphalt surfacing occurs close to the tyre edges, while under instantaneous uniform vertical stress conditions the SED is within the asphalt surfacing at the tyre centre. In addition to improved load/contact stress idealization for modelling, this finding may have important implications for the design of relatively thin asphalt surfacing layers for pavements.
Publication Year: 1997
Publication Date: 1997-01-01
Language: en
Type: article
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Cited By Count: 168
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