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The Pombaline cage (“gaiola pombalina”): an European anti-seismic system based on enlightenment era of experimentation

dc.contributor.authorMascarenhas, Jorge
dc.contributor.authorBelgas, Lurdes
dc.contributor.authorBranco, Fernando G.
dc.contributor.authorVieira, Eduarda
dc.date.accessioned2023-12-13T11:29:58Z
dc.date.available2023-12-13T11:29:58Z
dc.date.issued2024
dc.description.abstractOn November 1st, 1755, the lower part of Lisbon, a city of medieval character, was badly destroyed by the action of a violent earthquake, followed by a tsunami and violent fires. At the time, the Marquis of Pombal, ruled Portugal, and took several measures to safeguard the inhabitants and rebuild the city. It was decided to rebuild the city on the same site, according to a new urban plan with orthogonal streets. The conception of the new urban mesh was an Enlightenment Era design. The buildings were endowed with a series of unique characteristics, including an anti-seismic wooden structure - the Pombaline cage. This solution sought to resist earthquakes, making the building structure less rigid, aiming at dissipating the seismic energy through the lower weight and elasticity of the wood, the flexibility of the connections between the elements and even the lightening of the massive elements. This way, the total ruin of the building was avoided, in the event of an earthquake, and an interior area was created that could remain intact, serving as a refuge for the inhabitants. This anti-seismic system had great importance and influence in the panorama of engineering history, considering it could be at the genesis of seismic engineering in Europe. The perception that 18th century engineers had of the system to resist earthquakes through flexibility, should be the object of in-depth study, as it could be adopted in the reinforcement of constructions against possible earthquakes, especially the oldest ones, avoiding the introduction of rigid reinforcements in buildings otherwise characterized by their ductility. The present study seeks to explore the performance of this system, and to better understand how the increase in seismic performance is processed through flexibility, instead of the increase of the buildings stiffness.pt_PT
dc.description.versioninfo:eu-repo/semantics/acceptedVersionpt_PT
dc.identifier.doi10.1007/978-3-031-39603-8_5pt_PT
dc.identifier.eid85170397479
dc.identifier.isbn9783031396021
dc.identifier.isbn9783031396052
dc.identifier.isbn9783031396038
dc.identifier.urihttp://hdl.handle.net/10400.14/43314
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Science and Business Media B.V.pt_PT
dc.subjectAnti-seismicpt_PT
dc.subjectEarthquakept_PT
dc.subjectFlexibilitypt_PT
dc.subjectPombaline cagept_PT
dc.subjectWooden structurept_PT
dc.titleThe Pombaline cage (“gaiola pombalina”): an European anti-seismic system based on enlightenment era of experimentationpt_PT
dc.typebook part
dspace.entity.typePublication
oaire.citation.conferencePlaceChampt_PT
oaire.citation.endPage67pt_PT
oaire.citation.startPage56pt_PT
oaire.citation.titleStructural analysis of historical constructionspt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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