Notice bibliographique
Résumé
In order to obtain a strong and integrated steel structure, it is necessary to connect the main parts, namely the beams and columns in an appropriate manner so as to be able to guarantee the intended productivity.The integrity and cohesion between the main parts can be made feasible via the connections implemented in two forms of welded and bolted but it is worth mentioning that the bolted connections are more widely applied because of the high assembly speed and low costs.The simplest loading type in bolted connections is the state where the connected sheet is subjected to direct tension.Force transferring method in bolted connections is in two forms of bearing and frictional and the present study tries to deal more with the bearing connections.After designing and constructing a small frame, sixteen connection sheets with a fixed thickness of 6 mm and a shield in the present study, clearance from the hole center was taken into consideration and each of the specimens was tested under strain in laboratory environment in such a manner that firstly each specimen was installed and the bolts were placed and tightened by making use of jacks, then the strain force was measured at certain times and recorded by the use of a data logger.The process continued from tension to failure.The result was that the maximum amounts of strength obtained in laboratory tests showed an error range of 15% to 62% in comparison to the theoretical calculation of maximum strength according to the Instruction Manual.Therefore, it can be concluded that the Instruction Manual has followed a very conservative trend so as to main a higher margin of assurance and it is not costeffective because such an error percentage and the increase in the specimen strength rate acquired during laboratory tests in comparison to what is posited theoretically suffer a 25% reduction, for each of the specimens, in case that the coefficients are not applied in calculation relations.Comparing the specimens' characteristics, it is concluded that with the increase in the specimens' widths (W), both the maximum force obtained during the laboratory tests and the Td obtained through solving the relations mentioned in the Instruction Manual undergo an increase; in addition, with a comparison of the specifications regarding the specimens where the holes lie concentrically and with similar specimens where the holes do not exhibit clearance from the center, it was concluded that the hole's clearance of the center brings about a reduction in the maximum force obtained in laboratory and the amount of Td obtained through solving the relations proposed in the Instruction Manual.
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 | 0,000 | 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) | 0,985 | 0,973 |
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 ».