Design verification of a displacement-based design three dimensional wall-steel frame building

Student:Clara Caponi
Supervisor: Dr R Pinho

Abstract

Nonlinear dynamic time-history analyses are carried out in order to verify the efficiency and consistency of DDBD design techniques focused on dual frame-wall structure. Following this aim, a three dimensional prototype structure consisting of two-way moment resisting structural steel frames with channel walls of reinforced concrete was entirely defined and examined. From the first steps of the procedure, a complete design of the building was performed considering the flexural strength requirements indicated by the DDBD design method. A detailed characterization of the actual seismic response of the prototype structure is then offered using accurate numerical models. Refined finite element models are, in fact, realized with the aid of SeismoStruct and SAP2000 computer codes to perform the fundamental inelastic analyses: inelastic pushover analysis and inelastic dynamic time history analysis. An excellent match between the DDBD hypotheses and the DTHA responses can be observed. and important considerations regarding capacity design guidelines are pointed out. Keywords: 3D seismic response; Displaced-Based Design; dual frame-wall structure; steel frame; dynamic time-history;

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