Abstract

The submitted paper is devoted to the numerical modeling of the dynamic effects of moving vehicles on concrete pavements. The finite element method, namely the ADINA program, is used to model the problem. To solve the task, it is necessary to create a vehicle and a road computational models. The vehicle model is spacious and corresponds to a heavy truck of the Tatra type. The so-called single-layer road model on an elastic Winkler foundation is used. Concrete pavements are modeled using shell or solid elements. The output of the solution is the time course of the dynamic deflections at the individual points of the slab and internal forces and the stress states in the concrete slab at the individual time points of the solution. The calculation results for each computational model are compared to each other.

Highlights

  • Roads are typical transport structures subjected to the dynamic effect of moving vehicles

  • Single layer models are sufficient in case we want to analyze stress and strain states only in the reinforced concrete slab itself and we are not interested in stress and strain states in the individual subgrade layers

  • Other pavement layers are introduced into the calculation as an elastic Winkler foundation with compressibility modulus k = 270.3574 MN/m3

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Summary

Introduction

Roads are typical transport structures subjected to the dynamic effect of moving vehicles. The determination of the dynamic response of road pavements to moving vehicle loads is a subject of current interest and importance, which are deals in many departments around the world [1,2,3]. To solve the task by the numerical way, it is necessary to create a vehicle and a road computational models. The solid elements are more advantageous if the output is to be a more detailed analysis of the stress states of the structure. The output of the solution is the time course of the dynamic deflections at the individual points of the slab and internal forces and the stress states in the concrete slab at the individual time points of the solution. The calculation results for each computational model are compared to each other

Vehicle computational model
Road computational model
Results of the computation
Model with solid elements
Comparison of shell and solid element models
Conclusions
Full Text
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