ETD system

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Tesi etd-09152017-072549


Thesis type
Tesi di laurea magistrale
Author
RENZI, VALENTINA
email address
valentina.renzi91@gmail.com
URN
etd-09152017-072549
Title
Development of seismic design methods for Moon Shaped Steel Hysteretic (MSSH) dampers in steel structures
Struttura
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA EDILE E DELLE COSTRUZIONI CIVILI
Supervisors
relatore Ing. Giresini, Linda
relatore Prof. Sassu, Mauro
relatore Ing. Butz, Christiane
Parole chiave
  • case studies
  • application examples
  • INNOSEIS
  • effective damping
  • behavior factors
  • Anti-seismic devices
  • damper
  • code-approval
  • methodological procedure
Data inizio appello
10/10/2017;
Consultabilità
Parziale
Data di rilascio
10/10/2020
Riassunto analitico
Regarding anti-seismic energy dissipation devices, plastic deformation of steel is one of the most effective mechanisms available for the dissipation of energy, both from the economic and technical point of view.
One type of damper that uses yielding in order to dissipate energy is the Moon shaped steel hysteretic device. The MSSH device was used at first as damper for base isolated systems. The aim of this master thesis is to change the geometry of this element in order to employ it in the superstructure. Tests are conducted on the devices in order to confirm the expected behaviour.
In this thesis two different buildings with MSSH devices are analyzed: a mid rise building (2D and 3D) and an high rise building.
Once that the devices are suitable to be used as damper, it will be studied the behaviour of the structure through multi-modal analysis, push over analysis, non-linear time history analysis and non-linear incremental dynamic analysis. From these analyses the behaviour factor, q, and the effective damping of the structures are obtained, in order to provide rules for the design of this kind of structure (using multi-modal analysis and corrective coefficients related to the ductility and the damping).
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