Seismic retrofit of a 1960's, nine-story, steel-frame hospital building using triple friction pendulum seismic isolation
Notice bibliographique
Résumé
With the recent major earthquakes experienced around the world and the adverse impacts on population, infrastructure and economy, various countries are increasingly concerned with improving their preparedness and resilience to the threat of seismic hazards. To this end, the utilization of high-performance protective systems, such as dampers and seismic isolation, is becoming a common practice for the seismic design of new buildings as well as the seismic retrofit of existing ones. Such devices have the potential to achieve a building response modification during an earthquake and protect its structural and non-structural content. This behaviour is particularly important for high-importance buildings, such as hospitals, that should remain functional in the aftermath of an earthquake. This thesis proposes a retrofit scheme for a 1960s, nine-storey, steel-frame hospital building that involves the integration of a triple friction pendulum seismic isolation system to achieve seismic resilience and continuous functionality in the event of a major earthquake. This hospital is representative of Type 2 Construction, a typical 1960s steel moment-resisting frame design philosophy. Many of these frames were not designed to resist seismic loads. They tend to be extremely flexible based on today's design practice and therefore may collapse due to P-Delta effects. The seismic retrofit system is designed and evaluated in accordance with ASCE/SEI 41-13 (ASCE 2013a), FEMA P-750-09 (FEMA 2009a) and CAN/CSA S16-09 (CSA 2009). The original and retrofitted configurations of the hospital building are modelled in three-dimensions using an open source simulation platform and are subjected to a set of 40 ground motions from both Quebec City and Vancouver. The ground motions have been selected such that they represent the seismic hazard in these two urban regions. The original configuration building exhibits excessive deformations under the Quebec City ground motions and is pushed to collapse under five of the Vancouver ground motions. With the retrofitted configuration, the seismic behaviour of the hospital building is drastically improved and continuous functionality is achieved even under the most damaging ground motions. A life-cycle cost assessment is also performed in order to quantify and compare the earthquake-induced losses between the original and retrofitted configurations. In conclusion, this thesis provides valuable insights into the implementation, evaluation and numerical modeling of seismic isolation systems, promoting the use of these systems to increase life safety and economic stability in Canada in the case of earthquake hazards.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,001 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».