Page - 1190 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 4 Modal identification software: Modal_ID_auto2.0 and Modal_ID2.0. 4. NUMERICAL MODELLING OF ARCH DRF SYSTEMS Considering the utmost importance of the combined use of monitoring systems and numerical models for dam safety control, it is presented the software DamDySSA2.0, which has been developed in recent years in LNEC to study the dynamic behavior of dams (Fig. 5). This is a 3D FE program for dynamic state space analysis of arch dam-reservoir-foundation systems, based on a 3DFE coupled model that enables to simulate the dynamic dam-reservoir interaction, considering linear elastic behavior and generalized damping. The outlined Boundary Values Problem for the discrete coupled system is solved through a FE formulation in displacements (solid) and pressures (fluid), considering the solid- fluid motion coupling at the dam-reservoir interface and the hydrodynamic pressure waves propagation throughout the reservoir, which is a semi-infinite domain terminated by a radiation boundary [8]. The dynamic calculations are performed in time domain based on a novel coupled state space approach with two state Modal_ID_auto2.0: automatic data analysis 1. M ODE SHAPES 2. 2 3 4 5 266.1 281.0 295.8 FEV MAR ABR MAIO JUN JUL AGO SET OUT Cota de Água (m) 2014 1 Resultados Experimentais: Modos Simétricos Modos Antissiméticos Frequências da torre Rotação dos grupos de produção Frequências Naturais. Evolução ao longo do tempo 2/2014-10/2014Natural frequencies. Evolution over time Reservoir water level (m) Symmetric modes Antisymmetric modes Intake tower Power groups rotation Modal id. outputs Mode shapes Modal_ID2.0: interactive data analysis 1190