WP2
WP2
Procedures for the analysis of HCW systems
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Primary objectives:
Development of efficient nonlinear models through the adoption of simple and accurate elastoplastic constitutive relationships for the dissipative steel elements;
Evaluation of different modelling assumptions on the global and local seismic response;
Deeper understanding of the dynamic behaviour;
Formulation of a specific procedure for improved pushover analysis able to adequately approximate the results of nonlinear incremental dynamic analysis.
Advanced modelling techniques were adopted in order to get better precision and predictability from the numerical finite element models.
The global dynamic behaviour of two types of global HCW systems were investigated: (i) HYCAD fixed-base HCW system, which corresponds to Configuration 1, Configuration 2 and Configuration 3, and (ii) HYCAD rocking-base HCW system, which corresponds to Configuration 4, as mentioned in WP1. Detailed parametric investigations were performed to assess the influence of various modelling and design aspects through 3 types of analyses:
static nonlinear incremental analyses,
cyclic nonlinear incremental analyses,
dynamic nonlinear time-history analysis.
A simplified analysis procedure was developed based on the nonlinear simulations. Nonlinear dynamic analyses were used as a reference to calibrate the simplified nonlinear static analysis.
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