THE INFLUENCE OF THE REINFORCING PROCESS ON THE DISCRETE BASIS OF PAVEMENT DEFLECTION

Abstract

The active introduction of geosynthetic materials into road construction as the reinforcing structural elements of pavements, restrains by the absence of the evidently-based and experimentally confirmed theory of calculation of pavements with reinforcing layers. The results of the two-layered base made of crushed stone and sand, which are reinforced by geogrid with steel fibers in a polyethylene sheath are presented in the article. The deformation of the reinforced structure regularities are revealed and the deformation characteristics are obtained. The calculations model of reinforced layer made of the crushed stone is considered as the multilayered plate on the elastic basis, which consists of any layers number, which are rigidly linked among themselves. The lower layer with reinforcement has the physicomechanical characteristics which are determined by Foygt’s averaging method and which is significantly different from characteristics of overlying layers. The sand layer performs the role of the elastic basis. This calculations model may be used for the «without reinforcement construction». Thus the lower reinforcing layer and the layers, which are located in tensile zone are excluded from the calculation scheme. The Bubnov-Galerkina’s method is used for the calculation of the multilayered plate on the elastic basis. The proved coincidence of theoretical and experimental results is received. The reinforcing effect on deflections is established in the research.

Keywords

• discrete pavement basis
• reinforcement
• geogrid
• reinforcing effect
• elastic basis plate
• deflection