Pelican Creek Bridge Replacement Project—Yellowstone National Park, Wyoming
Notice bibliographique
Résumé
Located on the East Entrance Road in Yellowstone National Park, Wyoming, the approximately 1,500-ft long Pelican Creek Bridge Replacement Project was completed in 2020, replacing an existing 197-ft long bridge and associated causeway that spanned the Pelican Creek Valley. The project is located near the north shore of Yellowstone Lake. The new bridge provided the opportunity to remove the approximately 1,300-ft long causeway, which was located within and bisected the Pelican Creek wetlands. Removal of the causeway provided significant environmental benefits by reconnecting wetlands and restoration of natural channel migration of Pelican Creek. The bridge is 9 spans and founded on large diameter open-end pipe piles. The soils at the site consist of liquefiable alluvial and lacustrine deposits. The site is within the Yellowstone Caldera and is an area of high seismicity. A peer-reviewed site-specific dynamic soil response analysis was conducted for the project. The recommended seismic design response spectra were much lower than the AASHTO standard procedure spectra at short periods. The liquefaction analysis demonstrated that portions of the soil profile were potentially liquefiable when subjected to design-level ground motions, and soils at the abutments were susceptible to lateral spreading. Ground improvement was performed at the abutments to mitigate the ground failure hazards associated with lateral spreading and lateral flow. The foundations consist of 24-in. pipe piles at the abutments and 42-in. pipe piles at the interior bents. Final design geotechnical investigations consisted of 18 borings and six cone penetration test soundings performed in 2016. Static analysis methods were supplemented with full-scale dynamic and static pile load tests at the site. A dynamic load test was performed on two piles at the site in 1997, when other projects were being constructed in the area. A dynamic and static load test program was completed in 2017. Following a 38-day setup period, the static load test was performed. Interpretation of the load test results, along with construction testing requirements, yielded pile lengths shorter than those calculated using static analysis methods. The reduction in pile length and number of splices required to be field welded resulted in significant time and cost savings to the contract. Due to the relatively short construction season in Yellowstone National Park, generally May to October, the reduction in pile lengths eliminated 1 year from the construction schedule.
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) | 0,000 | 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 ».