Mechanistic Design of Low Volume Road Structures

Авторы

  • Pauli Kolisoja Department of Civil Engineering, Tampere University of Technology, Tampere, Finland
  • A. Kalliainen Department of Civil Engineering, Tampere University of Technology, Tampere, Finland
  • N. Vuorimies Department of Civil Engineering, Tampere University of Technology, Tampere, Finland

Ключевые слова:

Permanent deformation, Rutting, Subgrade, Design

Аннотация

This paper presents a new design approach for assessing the risk of excessive
permanent deformation development in soft subgrade soil underlying a low volume road of
thin structural layers exposed to heavy wheel loads i.e. Mode 2 rutting using the terminology
defined in the EU-funded ROADEX project. The approach is essentially based on backcalculating
the results of 3D Finite Element modelling produced with the PLAXIS software
package in a way that allows obtaining the same result in terms of ultimate load carrying
capacity of the subgrade soil by a simple hand-calculation procedure as would be obtained by
sophisticated 3D FE modelling of the loading arrangement / road structure / subgrade soil
combination in question.

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Опубликован

2018-07-18