Simulation of the influence of dynamic loading on the stress-strain state of the natural and geoengineering environment

Natalya Remez,Tetiana Hrebeniuk,Vadym Bronytskyi,Rafael Bambirra Pereira,Alina Dychko,Petr Ekel,S Semerikov,H Danylchuk,T Vakaliuk,V Osadchyi,S Sakhno,A Striuk,P Nechypurenko,A Iatsyshyn,S Chukharev,O Bondarenko,S Klimov

doi:10.1051/e3sconf/202128001008

Abstract

The paper provides numerical simulation of the influence of dynamic loading on the stress-strain state of the natural and geoengineering technogenic environment taking into account the soil basis for forecasting its use as the basis of the structure. Paper demonstrates the impact of static and dynamic loading on the subsidence of the landfill. To take into account the liquid phase of the waste and the viscoplastic medium, Darcy's law is used as an equation of balance of forces. The body of the landfill is modeled by weak soil taking into account the creep, using the Soft Soil Creep model. The covering and underlying soil layers are described by the Coulomb – Mohr model. An effective method for calculating the sedimentation of natural and geoengineering environment on the example of a solid waste landfill, based on numerical modeling of the stress-strain state of the landfill and underlying soil using finite elements is developed. It is demonstrated that the largest subsidence is experienced by the landfill with sand, as the base soil, but in percentage terms the amount of subsidence with the maximum load relative to the initial subsidence without loading is the largest in clay (33.7%). The obtained results must be taken into account when using landfills as a basis for buildings, structures, routes, recreational areas, etc.

Highlights

Due to the continuous growth of industry and, as a result, the increase in industrial and household waste, dumps and tailings of the mining industry, the area allocated for them is growing
It is most expedient to apply mathematical modeling to take into account the stressstrain state of such medium, taking into account the underlying soil arrays and dynamic loads
Numerical modeling of the stress-strain state of the solid waste landfill and the soil base is carried out to predict the possibility of its use as the basis of a building or structure

Summary

Introduction

Due to the continuous growth of industry and, as a result, the increase in industrial and household waste, dumps and tailings of the mining industry, the area allocated for them is growing . The question of the sustainability of such natural-technogenic geoengineering areas for their possible use in the future as a basis for engineering buildings and structures. Scientists are faced with the task of assessing and predicting stability under static and dynamic loads [1]. Analysis of the literature demonstrated that experimental methods for assessing the resilience of natural-technogenic environments are costly and are not always effective. It is most expedient to apply mathematical modeling to take into account the stressstrain state of such medium, taking into account the underlying soil arrays and dynamic loads

Objectives

Methods

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Conclusion