Drgania belek i płyt poprzecznie niejednorodnych na podłożach odkształcalnych wymuszone obciążeniami ruchomymi

Magdalena Ataman

Abstract

The problem of vibration of beams and plates on foundations, subjected to moving loads is closely related to the dynamics of bridges, roads, airfield and railway pavements. The durability of such a communication pavement depends strongly on the correct design of the structure. One of the most important factors, to be taken into account in the process of pavement design, is dynamic load caused by moving vehicles. Strains, displacements and stresses in each layer of the pavement, depend mainly on the velocity and acceleration of the vehicle. Although the engineering calculations are usually supported by computer programs, in practice, these values are usually determined based on the solutions of static problems. Most often in the analysis the upper surface of a multilayer elastic half-space is subjected to axially symmetric, uniformly distributed loading. Dynamic effects are taken into account by introducing a dynamic factor, typically 1.2. Models presented in this work include fixed and variable speed of a moving load, which allows to determine the dynamic coefficients depending on the types of considered vehicle and engineering structure. The influence of soil foundation and layered pavement system is also taken into account. Using commonly recognized formulae, the durability of road pavement can be estimated based on the calculated strains, displacements and stresses. The proposed model of road - vehicle system can be used to verify used in the engineering practice simpler calculation schemes which neglect the dynamic nature of the moving loads.
Diploma typeDoctor of Philosophy
Author Magdalena Ataman (FCE / IRB)
Magdalena Ataman,,
- The Institute of Roads and Bridges
Title in PolishDrgania belek i płyt poprzecznie niejednorodnych na podłożach odkształcalnych wymuszone obciążeniami ruchomymi
Languagepl polski
Certifying UnitFaculty of Civil Engineering (FCE)
Disciplineconstruction / (technology domain) / (technological sciences)
Defense Date01-12-2010
Supervisor Wacław Szcześniak (FCE / IRB)
Wacław Szcześniak,,
- The Institute of Roads and Bridges

Internal reviewers Roman Nagórski (FCE / IRB)
Roman Nagórski,,
- The Institute of Roads and Bridges

Roman Bogacz (FACME / IAE)
Roman Bogacz,,
- Institute of Automotive Engineering
Pages280
Keywords in Englishxxx
Abstract in EnglishThe problem of vibration of beams and plates on foundations, subjected to moving loads is closely related to the dynamics of bridges, roads, airfield and railway pavements. The durability of such a communication pavement depends strongly on the correct design of the structure. One of the most important factors, to be taken into account in the process of pavement design, is dynamic load caused by moving vehicles. Strains, displacements and stresses in each layer of the pavement, depend mainly on the velocity and acceleration of the vehicle. Although the engineering calculations are usually supported by computer programs, in practice, these values are usually determined based on the solutions of static problems. Most often in the analysis the upper surface of a multilayer elastic half-space is subjected to axially symmetric, uniformly distributed loading. Dynamic effects are taken into account by introducing a dynamic factor, typically 1.2. Models presented in this work include fixed and variable speed of a moving load, which allows to determine the dynamic coefficients depending on the types of considered vehicle and engineering structure. The influence of soil foundation and layered pavement system is also taken into account. Using commonly recognized formulae, the durability of road pavement can be estimated based on the calculated strains, displacements and stresses. The proposed model of road - vehicle system can be used to verify used in the engineering practice simpler calculation schemes which neglect the dynamic nature of the moving loads.
Thesis file
Atamant.pdf 4.93 MB
Citation count*5 (2020-09-18)

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