Evaluation of the Structural Performance of Shear Walls Built by Multi-layer Composite Laminated Panels
Notice bibliographique
Résumé
Recently, the implementation of cross-laminated timber (CLT) in building systems has rapidly developed in many countries including Canada. Despite this, further improvement in the product performance of CLT is desirable. Composite Laminated Panels (CLP) have been developed due to the need to overcome one of the key weaknesses of traditional CLT, namely the rolling shear failure. CLP is made by combining traditional lumber with structural composite lumber (SCL). This thesis focuses on the structural performance of CLP shear walls and their connections. The aim of this project was to evaluate the mechanical properties of CLP connections as well as the lateral load performance of CLP shear walls, and the feasibility of using current mechanics-based models to predict the strength of connections and shear walls fabricated with CLP. To study the structural performance of CLP connections together with CLP shear walls, this thesis presents experimental and analytical investigations. Monotonic and cyclic tests were carried out at both the fastener level and the wall level. Afterward, the predictions using current analytical models were compared with experimental results. Full-scale coupled CLP shear wall panels were tested with different connection configurations to achieve target kinematic wall behaviours under lateral load. The structural performance of the tested shear wall tests was characterised by lateral strength, stiffness, ductility ratio, and energy dissipation, which are all significant parameters required for seismic design. Furthermore, the experimental results also served to validate existing analytical models to predict the strength and deflection of CLT shear walls in the elastic region. It was found that the analytical model for predicting lateral strength of CLP shear walls generally gives good predictions, while the deflections of CLP shear walls were largely underestimated by the analytical deflection model. Specimens for connection tests were obtained by cutting the CLP panels from the undamaged parts of the panels after the shear wall tests. This study showed that the structural performance of CLP connections is significantly influenced by the properties of timber material. Replacing lumber with Laminated Strand Lumber (LSL) in the core layer exhibited a remarkable increase in stiffness and strength, and tended to fail in a ductile manner. The utilisation of LSL in face layers enhanced stiffness and strength, but reduced ductility. Overall, this investigation demonstrated that CLP connections and shear walls can provide similar or better performance compared with those fabricated with traditional CLT panels.
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 | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 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 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 ».