Repairability and Damage Assessment of Controlled Rocking Masonry Walls with Energy Dissipation Accessible in a Steel Base
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Notice bibliographique
Résumé
In recent years various studies have explored the seismic behavior of controlled rocking masonry walls (CRMWs) that utilize both gravity loading for self-centering and additional energy dissipation (ED) devices to regulate the response (ED-CRMWs). However, these studies had limitations because ED devices were installed on or within the masonry wall, making repairs difficult or impossible after ED yielding or fracturing. This study presents the testing of two half-scale CRMWs that were constructed with supplemental flexural yielding Energy dissipation devices Accessible in a Steel base (EASt-CRMWs). The proposed EASt-CRMWs simplify the installation of the energy dissipation devices and overall wall construction, while also allowing for easy replacement following damage. The walls were subjected to quasi-static, cyclic loading up to drifts of 2.35%, after which the ED devices were replaced, and the same wall was tested again. Wall 2 was built with a steel plate at the rocking point between the steel base and the foundation interface. All five tests demonstrated a favorable self-centering response, with no significant damage to the walls. The ED devices were easily replaced between tests, and the damage was confined to them. Wall 2 had better performance because of the steel plates, which reduced damage to the mortar at the steel base-foundation interface, resulting in slightly decreased lateral load capacity at lower drift ratios upon retesting for Wall 1. Moreover, residual drifts were below 0.05% for all wall tests. Finally, a numerical model and a damage index proposed previously were validated based on the experimental work presented in this study as well as additional configurations of EASt-CRMWs presented in a previous recent study. The results demonstrate that the model can capture the overall response of the walls, and the damage index can accurately predict the location, type, and severity of the damage.
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Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
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 découle