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Lateral Load Test for Large Diameter Drilled Shafts for the Kosciuszko Bridge Replacement
The Kosciuszko Bridge replacement project involved the construction of two parallel cable-stayed bridges. Both bridge towers are founded on high capacity seven-foot diameter drilled shafts with 6.5-foot diameter rock sockets. The design and construction of the bridge was divided into two phases. Each phase included one cable-stayed bridge structure. High capacity lateral load tests were performed for production drilled shafts in both phases of the project. The full-scale testing allowed the project team to verify single shaft lateral performance and effectiveness of the contractor’s method of construction. The lateral load tests were modeled using the p-y method for analytical results. During load testing the shafts were instrumented in the field to monitor shaft behavior. Instrumentation included direct head movement measurement, and the use of inclinometers for determination of the lateral deformation with depth and estimation of the zone of influence due to the lateral load. The shafts’ design and construction, lateral load test set up, acceptance criteria, and performance for both phases are discussed herein. Comparison between test results and the predicted results from the p-y analysis method are included.
Lateral Load Test for Large Diameter Drilled Shafts for the Kosciuszko Bridge Replacement
The Kosciuszko Bridge replacement project involved the construction of two parallel cable-stayed bridges. Both bridge towers are founded on high capacity seven-foot diameter drilled shafts with 6.5-foot diameter rock sockets. The design and construction of the bridge was divided into two phases. Each phase included one cable-stayed bridge structure. High capacity lateral load tests were performed for production drilled shafts in both phases of the project. The full-scale testing allowed the project team to verify single shaft lateral performance and effectiveness of the contractor’s method of construction. The lateral load tests were modeled using the p-y method for analytical results. During load testing the shafts were instrumented in the field to monitor shaft behavior. Instrumentation included direct head movement measurement, and the use of inclinometers for determination of the lateral deformation with depth and estimation of the zone of influence due to the lateral load. The shafts’ design and construction, lateral load test set up, acceptance criteria, and performance for both phases are discussed herein. Comparison between test results and the predicted results from the p-y analysis method are included.
Lateral Load Test for Large Diameter Drilled Shafts for the Kosciuszko Bridge Replacement
Zellers, Daniela Bastos (author) / Hanna, Sherif (author) / Ferrucci, Matteo (author) / Adams, Robert (author) / Moryl, Jeff (author)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 269-283
2019-03-21
Conference paper
Electronic Resource
English
Lateral Load Test for Large Diameter Drilled Shafts for the Kosciuszko Bridge Replacement
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