polito.it
Politecnico di Torino (logo)

SEISMIC DESIGN OF HYSTERETIC DEVICES FOR RETROFITTING EXISTING RC STRUCTURES

Federico Selvi

SEISMIC DESIGN OF HYSTERETIC DEVICES FOR RETROFITTING EXISTING RC STRUCTURES.

Rel. Paolo Castaldo, Enrico Tubaldi. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Civile, 2018

[img]
Preview
PDF (Tesi_di_laurea) - Tesi
Document access: Anyone
Licenza: Creative Commons Attribution Non-commercial No Derivatives.

Download (9MB) | Preview
Abstract:

Passive control systems through hysteretic devices represents one of the best technique for retrofitting, or upgrading, the numerous existing reinforced concrete framed buildings, located in Italy in areas with high seismic hazard and designed without an appropriate seismic detailing. These systems absorb the inertial actions in combination with the existing structure, increasing the stiffness of the frame and providing an additional dissipation of the energy by means of their ductility capacities to exhibit large inelastic deformations. The thesis deals with the design of dissipative buckling restrained braces (BRBs), in order to upgrade an existing building in L’Aquila. Specifically, it is used a procedure based on the results from pushover analysis considering as design parameter the maximum inter-storey drift properly chosen in order to avoid an excessive damage of the main structure. After the design procedure, the model of the building equipped with the BRBs is tested to verify the respect of the seismic performance. The behaviour of the upgraded structure is studied both through static nonlinear (pushover) analyses and nonlinear dynamic (time history) analyses using a set of several ground motion records compatible in average with the elastic design spectrum. Another important aspect that is taken into account is the influence of the infills on the design of the BRBs, comparing the response of the upgraded building with and without the presence of non-structural elements.

Relators: Paolo Castaldo, Enrico Tubaldi
Academic year: 2018/19
Publication type: Electronic
Number of Pages: 169
Subjects:
Corso di laurea: Corso di laurea magistrale in Ingegneria Civile
Classe di laurea: New organization > Master science > LM-23 - CIVIL ENGINEERING
Aziende collaboratrici: University of Strathclyde
URI: http://webthesis.biblio.polito.it/id/eprint/9300
Modify record (reserved for operators) Modify record (reserved for operators)