Uplift Pressure
Mostrando 1-3 de 3 artigos, teses e dissertações.
-
1. Verificação da eficácia dos sistemas de vedação e drenagem em fundações de barragens de concreto / Grouting and drainage curtains efficacy verification in concrete dam foundations
One of the biggest problems for hydraulic works safety is the uplift pressure. The execution of grouting, associated with drainage, is very important to control seepage through concrete dam foundations. Therefore, appropriate means to check the efficiency of those systems are essential for dam safety evaluation. Most of the uplift pressure criteria used nowa
Publicado em: 2006
-
2. A NUMERICAL MODEL FOR THE ANALYSIS OF BURRIED PIPES / MODELO NUMÉRICO PARA O ESTUDO DO COMPORTAMENTO DE DUTOS ENTERRADOS
This work presents a numerical methodology for the analysis of buried pipes employed by the transport of oil and gas. Both geometric and material nonlinearities are considered in a total Lagrangean formulation. A special type of beam element is employed in the finite element discretization. The equilibrium equations are formulated based on the virtual work p
Publicado em: 2003
-
3. Buoyancy-driven, rapid exhumation of ultrahigh-pressure metamorphosed continental crust
Preservation of ultrahigh-pressure (UHP) minerals formed at depths of 90–125 km require unusual conditions. Our subduction model involves underflow of a salient (250 ± 150 km wide, 90–125 km long) of continental crust embedded in cold, largely oceanic crust-capped lithosphere; loss of leading portions of the high-density oceanic lithosphere by slab brea
The National Academy of Sciences of the USA.