Design, Modeling, and Nonlinear Response of Linked Column Frame with Multiple Links under Crustal and Subduction Zone Earthquakes.
Notice bibliographique
Résumé
Abstract \n \nDesign, Modeling, and Nonlinear Response of Linked Column Frame with Multiple Links under Crustal and Subduction Zone Earthquakes \n \nAvik Dhar \n \nTo mitigate the economic loss in the aftermath of seismic events, researchers required the development of low-damage seismic force resisting systems. As such is the Linked Column Frame (LCF) with backup moment resisting frame (MRF). The fundamental advantage of the LCF system is its tri-phase response: elastic, rapid return to occupancy (low residual drift), and collapse prevention. \nDusicka and Iwai (2007) developed the LCF system with single link (LCF-S) and multiple links per floor (LCF-M). Then, Malakoutian (2012) refined the design methodology for the LCF-M system using design provisions for Eccentrically Braced Frame (EBF) according to ASCE 7 and Lopes (2016) conducted experimental tests. Vayas et al. (2013) analysed different types of links acting as flexural beams and pins. However, the effect of subduction zone ground motions on the nonlinear seismic response of LCF buildings was not investigated and a design methodology complying with NBC and CSA S16 standard requirements was not proposed. \nThe main objectives are: \n \n• Propose a forced-based design method for the LCF system with single and multiple links per floor using the current NBC 2015 and CSA S16-14 standard requirements. \n \n• Develop a numerical model of LCF system in OpenSees environment that is able to show accurate nonlinear behavior of links from yielding to failure, and consider a low-cycle fatigue model to trigger the failure of MRF's beams. \n \n• Assess the seismic performance of the LCF-M system versus the traditional EBF system \n \nemployed to brace a low-rise building subjected to crustal and subduction zone ground motions using nonlinear time history analysis and incremental dynamic analysis. \nTo fulfill the research objectives, the design methodology for LCF-M system was proposed and numerical models of a 4-storey building located on Site class C in Vancouver B.C. was developed in OpenSees. It was found that at design level (2% in 50 years probability of exceedance), the LCF-M prototype building showed lower residual interstorey drift than 0.5%, which is the reparability threshold, and lower link rotation than 0.08 rad., while the MRF beams were on the verge of hinging. The analysis also found that compared to EBF prototype building, the LCF-M with perimeter backup MRF provided larger margin of safety under both sets of crustal and subduction ground motions. In addition, LCF-M buildings enable rapid repair following earthquakes.
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Prédiction distillée sur la base complète
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 | 0,002 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,003 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,001 | 0,001 |
| 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 découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, 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 ».