The explicit formulation of a small displacement model for the coupled hydro-mechanical analysis of concrete dam foundations based on interface finite element technology is presented. The proposed 3D hydromechanical coupled ...

Purpose - The rigid spherical particle models proposed in the literature for modeling fracture in rock have some difficulties in reproducing both the observed macroscopic hard rock triaxial failure enveloped and compressive ...

A 3D spherical rigid particle discrete element formulation based on the Discrete Element Method, DEM, which has been used to model concrete, is described. The model has been shown to give a good agreement in terms of peak ...

The paper presents the 2 main methods for the determination of the in-situ state of stress in rock masses, developed by the LNEC, and refers to a practical case in which they were used, at an underground powerhouse in ...

Em Portugal há cerca de seis dezenas de grandes barragens de betão com observação continuada, sendo que cerca de um terço estão afetadas por reações expansivas de origem interna do betão. Uma delas, a barragem do Alto ...

Cracks propagating deep inside gravity dams can seriously affect their structural safety. Due to the potential catastrophic scenarios associated to the collapse of large concrete dams, it is a fundamental issue to ...

A produção de ortomosaicos tendo como base ou fotografias aéreas obtidas de câmaras instaladas em veículos aéreos de baixo custo (conhecidos por VANT - Veículo Aéreo Não Tripulado, sigla portuguesa, UAV – Unmanned Aerial ...

The nowadays-available dynamic monitoring equipment integrating sensitive low-noise sensors creates an opportunity to implement continuously operating dynamic monitoring systems in dams and validate the suitability of these ...

This paper presents an updating of the analysis and interpretation of the structural behavior of Covão do Meio dam (in Portugal) which concrete is affected by an ongoing swelling process. The simulation of dam’s behavior ...