Ways to Minimize Volume (Weight) and Increase the Bearing Capacity of Rigid Pavement

Alexander Kolesnikov,Tatiana Tolmacheva

doi:10.28991/cej-2019-03091427

Abstract

The objective of research is finding of a possibility economy of rigid pavement weight and volume of material. The subject of the research is a mathematical model of rigid pavement in the form of a multilayer structure on an elastic foundation. The method of a research consists in modeling the behavior of rigid pavement in the form of a set of equations. These equations reflect the change in the stress-strain state of such structures. The system of equations takes into account the geometric nonlinearity of the work of materials and makes it possible to investigate the influence of various parameters on the values of stresses and displacements. Critical force coefficient and stress of shells are calculated by Bubnov-Galerkin. The formation way of the elastic foundation allows modeling the spreading layers with various characteristics. Use of two-layer model allows considering of a surface course and base course of road pavement designing (for example concrete and crushed stone). The graphs show the patterns of change of the stress of rigid pavement when changing the characteristics. The form of rigid pavement allowing to maintain big loadings is exposed to improvement. Findings shows the possibility of optimizing the geometric parameters of the design and achieving the savings in weight and volume of the consumable material.

Highlights

Structures in the form of plates on an elastic foundation have found wide application as designs of rigid pavements
The graphs show that the stress functions are smooth and unimodal. This simplify the optimum forms of rigid pavement analysis
Fixed supported of construction of rigid pavement significantly reduces the stress value

Summary

Introduction

Structures in the form of plates on an elastic foundation have found wide application as designs of rigid pavements. Rigid pavement [1,2,3,4,5,6] differ from flexible pavement [7,8,9,10] in existence of a concrete layer in a surface course One more advantage of such constructions is the speed of mounting and lack of the special mounting equipment For this reason, such constructions are considered in our work. It is more expedient to use shallow shells that have a definite rise in the center This makes it possible to provide the necessary transverse slope at the manufacturing stage.

Research Methodology

Results and Discussion

Conclusion