Análise sísmica de um edifício de alvenaria e proposta de soluções de reforço

Jéssica Paola Santos Forte de Faria

Key information

Authors:

Jéssica Paola Santos Forte de Faria (Jéssica Paola Santos Forte de Faria)

Supervisors:

Rita Maria Do Pranto Nogueira Leite Pereira Bento (Rita Maria Do Pranto Nogueira Leite Pereira Bento); Ana Gabriela Gaspar Simões (Ana Gabriela Gaspar Simões)

Published in

December 7, 2021

Abstract

The building stock in Portugal consists largely of old masonry buildings considered susceptible to seismic actions. Among the various construction typologies, the “Gaioleiro” typology in Lisbon is the most vulnerable; therefore, it will be the subject of this study. Portugal has suffered numerous earthquakes throughout its history, and since new earthquakes are expected to occur, it became mandatory in 2019 to prepare a seismic vulnerability assessment report for buildings that undergo structural rehabilitation. It is therefore essential to know the procedures to be followed for the seismic assessment, and possible strengthening, of existing masonry buildings. This dissertation evaluates the global and local seismic vulnerability of a structure representative of a “Gaioleiro” building, located at Avenida Duque de Loulé nº 70. The geometric and dynamic characterization, the structural elements, and the properties of the materials are defined based on studies carried out by M. Branco in 2006 and 2007. Based on the information collected, the software 3MURI is used to develop an equivalent frame model. The calibration of the developed model considers the results of the ambient vibration tests developed by Branco in the aforementioned studies and the influence of the adjacent building on the behavior of the structure. Thus, for the seismic evaluation of the building, a non-linear static (pushover) analysis and a non-linear kinematic analysis of the local out-of-plane collapse mechanisms are performed.