Strukturella och ekonomiska jämförelser mellan KL-trä och armerad betong : Fallstudie: Vasaskolan i Gävle
Notice bibliographique
Résumé
According to the government, the Swedish economy is in a strained situation. High inflation and rising interest rates are leading to reduced purchasing power for households, putting many companies in a difficult position with a higher number of layoffs and bankruptcies as a result. Regarding timber prices, they increased heavily in 2021 due to sanctions against Russia after their invasion of Ukraine. The eliminated import of Russian timber, alongside problems with bark beetles in Canada and Central Europe, led to a drastic increase of timber prices. The prices of timber products increased by 61.4 percent during the period January 2021 to January 2022, and by 13.5 percent for concrete products. Due to these circumstances, there is an interest in keeping down construction-related costs, where one approach is to choose building materials with low costs and high strength. This case study examined the differences between an existing school building made of CLT and a corresponding building made of RC, in terms of material prices and the structure of the load-bearing elements. Based on drawings of an existing school building, a model was created in Strusoft FEM-Design. A corresponding building made of RC was then modeled based on a realistic execution in terms of dimensions and placement of load-bearing elements. Both buildings were then analyzed and designed until the utilization rate, deflection and stability reached acceptable levels. The total material cost was then calculated for each building, and structural properties were compared. The results of the study showed that the building made of CLT required larger dimensions for the load-bearing elements but weighed approximately 50 percent less than the RC building. However, the overall utilization rate was lower for the loadbearing elements in the building made of CLT. Material costs were approximately eight percent higher for the building made of CLT than the RC building. The conclusion of the study indicates it would have been more expensive to build the school building from CLT than RC in terms of material prices, but more indepth studies investigating all related construction costs should be conducted. Both the CLT frame and the RC frame had load-bearing elements with a maximum utilization rate of 99 percent. However, the CLT frame generally had a lower utilization rate than the RC frame. In addition to the RC frame being cheaper, acceptable strength could be achieved with smaller dimensions of the load-bearing elements and sparser placement. This creates larger space for the activities the building is intended for. Overall, the study suggests it would have been beneficial if the school building had been built of RC instead of CLT from an economic and structural perspective.
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 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 | 0,004 | 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 | 0,001 | 0,000 |
| Communication savante | 0,000 | 0,001 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,004 | 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; les deux têtes enseignantes s’accordent sur ce qui est montré ici.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».