Initial Condition Assessment of the 3,000 mm (120 in.) Diameter Primary Trunk Interceptor for the Region of York
Notice bibliographique
Résumé
The primary trunk (PT) sewer was designed to convey wastewater from the Regional Municipality of York and to collect and transport flows from Pickering and Ajax to the Duffin Creek Pollution Control Centre (PCC) in Ontario, Canada. The total collection system area encompasses an area of 47,350 ha (117,004 acre) and a total residential population of more than 1 million people and a daily influx of more than half a million people due to employment in the area. The PT sewer was constructed in multiple contracts in the late 1970s as a low head pressure pipe. While upper reaches of the sewer have been subjected to varying levels of condition assessment, the lower 5 km of pipe (3 miles) has never had its condition formally assessed. The diameter in this area ranges from 2,550 mm (102 in.) to 3,000 mm (120 in.), and the flow regime ranges from open channel flow to surcharged flow with more than 8 m of head. Aside from combined loading, which was practiced in the 1970s, the most significant evolution in structural design of RCP from the late 1970s to present day was the recognition that larger diameter pipes needed to be designed for shear (diagonal and radial) and for flexure and service load crack control. While this concept was introduced by Frank Heger as early as 1963 it was not introduced in any standard practice until the 1993 ASCE standard practice and is still not covered by the present-day ASTM C76 standard. The initial condition assessment consisted of assessing more than 48 unique load cases with finite element analysis (FEA) techniques and additional load cases through parameter sensitivity assessment. Investigations were also carried out to identify all potential deterioration mechanisms for the installed pipe relative to its internal and external exposure environment and prioritize the nature and type of advanced condition assessment tools to be deployed in ongoing assessments. The initial assessment provided a unique overview of the original design of the sewer versus present-day design standards and a summary of the exposure conditions that could affect the rate of degradation of the pipe material utilized in the original construction and established an initial "desktop"condition assessment model to facilitate structural assessment of sewer once more advanced inspections were undertaken. The output of this assessment not only provided the basis for input into an assessment of the surcharge pressures the pipe could reasonably tolerate during long-term operations but also, through examining the vulnerabilities in the present operating condition, established the types of advanced inspection tools that are most advantageous to deploy as the next stage of a condition assessment program.
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 | 0,001 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,005 | 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; 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 ».