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A presente dissertação consiste em verificar a tendência do coeficiente de segurança
quando se varia certos parâmetros (ângulo de atrito interno do terreno, inclinação do
terrapleno no tardoz do muro e o ângulo que a massa de solo faz quando se comporta como
parte integrante do muro numa situação limite) considerados no cálculo.
Para atingir os objectivos anteriormente referidos, dividiu-se o trabalho em duas fases, a
primeira fase teve como objectivo verificar qual a tendência do coeficiente de segurança
quando sujeito à variação de dois parâmetros, o ângulo de atrito interno do terreno e a
inclinação do terrapleno no tardoz do muro que varia de 5° até ao valr do ângulo de atrito
interno do terreno.
A segunda fase consiste em analisar qual a tendência do coeficiente de segurança quando
sujeito à variação de três parâmetros, o ângulo de atrito interno do terreno, de 20° a 45°, a
inclinação do terrapleno no tardoz do muro, de 10° até ao valor do ângulo de atrito interno do
terreno, e o ângulo que a massa de solo faz quando se comporta como parte integrante do
muro numa situação limite.
Para ambas as situações efectuaram-se os respectivos cálculos quer pela Teoria de Rankine
e quer pela Teoria de Mohr – Coulomb, havendo casos em que foi necessário conjugar estas
duas Teorias.
The present dissertation intend to verify the tendency of the coefficient of security when we vary certain parameters (angle of internal friction of the land, inclination of the landfill on the back of the wall and the angle that the mass of soil does when it behaves as part of the wall in a limit situation) considered in the calculation. To aim the objectives previously referred, we divided the work in two phases, the first one was to verify which the tendency of the coefficient of security when we vary two parameters, the angle of internal friction of the land and the inclination of the landfill on the back of the wall that varies of 5° to the angle of internal friction of the land. Secondly we analyze which the tendency of the coefficient of security when subject to a variation of three parameters, the angle of internal friction of the land, of 20° to 45°, the inclination of the landfill on the back of the wall, of 10° to the angle of internal friction of the land, and the angle that the mass of soil does when it behaves as part of the wall in a limit situation. For both situations were made the respective calculations by Rankine Theory and by the Theory of Mohr – Coulomb, and in some cases it was necessary to combine these two theories.
The present dissertation intend to verify the tendency of the coefficient of security when we vary certain parameters (angle of internal friction of the land, inclination of the landfill on the back of the wall and the angle that the mass of soil does when it behaves as part of the wall in a limit situation) considered in the calculation. To aim the objectives previously referred, we divided the work in two phases, the first one was to verify which the tendency of the coefficient of security when we vary two parameters, the angle of internal friction of the land and the inclination of the landfill on the back of the wall that varies of 5° to the angle of internal friction of the land. Secondly we analyze which the tendency of the coefficient of security when subject to a variation of three parameters, the angle of internal friction of the land, of 20° to 45°, the inclination of the landfill on the back of the wall, of 10° to the angle of internal friction of the land, and the angle that the mass of soil does when it behaves as part of the wall in a limit situation. For both situations were made the respective calculations by Rankine Theory and by the Theory of Mohr – Coulomb, and in some cases it was necessary to combine these two theories.
Descrição
Palavras-chave
Dimensionamento de muros de suporte Teoria de Mohr – Coulomb Teoria de Rankine Theory of Mohr – Coulomb Rankine theory Retaining walls design
Contexto Educativo
Citação
Editora
Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto