Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large Diameter Drilled Shafts: Load Testing and Numerical Analysis for Bridge Foundation Design
Bridge foundation design has progressed towards larger diameter and longer drilled shafts in recent years, pushing the practical limits of construction. Load testing can lead to reliable foundation performance with shorter piles, helping to reduce cost and mitigate construction issues associated with unnecessarily long piles. A case study of an Osterberg load test program on a 10-ft (3-m) diameter 140-ft (43-m) long drilled shaft is presented. Results from the load test are used to determine final pile lengths for the project. A reduction of about 25 ft (7.6 m) or more is achieved per pile compared with lengths determined using conventional methods, providing cost savings, and improved constructability. Relatively simple numerical modeling tools are demonstrated to provide useful information during design and construction. Beam-spring models with side resistance (t-z) and end bearing (q-z) springs developed based on the load test illustrate the overall pile capacity within a displacement-based design framework. Axis-symmetric finite element (FE) models are calibrated using load test data and extended to address top-down loading and effects of potential anomalies on the pile capacity.
Large Diameter Drilled Shafts: Load Testing and Numerical Analysis for Bridge Foundation Design
Bridge foundation design has progressed towards larger diameter and longer drilled shafts in recent years, pushing the practical limits of construction. Load testing can lead to reliable foundation performance with shorter piles, helping to reduce cost and mitigate construction issues associated with unnecessarily long piles. A case study of an Osterberg load test program on a 10-ft (3-m) diameter 140-ft (43-m) long drilled shaft is presented. Results from the load test are used to determine final pile lengths for the project. A reduction of about 25 ft (7.6 m) or more is achieved per pile compared with lengths determined using conventional methods, providing cost savings, and improved constructability. Relatively simple numerical modeling tools are demonstrated to provide useful information during design and construction. Beam-spring models with side resistance (t-z) and end bearing (q-z) springs developed based on the load test illustrate the overall pile capacity within a displacement-based design framework. Axis-symmetric finite element (FE) models are calibrated using load test data and extended to address top-down loading and effects of potential anomalies on the pile capacity.
Large Diameter Drilled Shafts: Load Testing and Numerical Analysis for Bridge Foundation Design
Wilson, Patrick (Autor:in) / Brown, Eric (Autor:in) / Law, Hubert (Autor:in) / Koo, John C. (Autor:in)
IFCEE 2018 ; 2018 ; Orlando, Florida
IFCEE 2018 ; 395-408
06.06.2018
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Large Diameter Drilled Shafts: Load Testing and Numerical Analysis for Bridge Foundation Design
| British Library Conference Proceedings | 2018
Lateral Load Test for Large Diameter Drilled Shafts for the Kosciuszko Bridge Replacement
| British Library Conference Proceedings | 2019
Design of large-diameter drilled shafts for the Northumberland Strait bridge project
| Online Contents | 1997