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Geotechnical Centrifuge Experiments on Bearing Capacity of Pipe Piles
Large open-ended pipe piles have been widely used in offshore and transportation engineering. The design formula for the pipe piles in the current AASHTO specification is based on the load-bearing database of pipe piles with diameters less than 24 inches. Therefore, the load/resistance factors may be inaccurate for the design of large open-ended pipe piles. Centrifuge testing is one of the most commonly used geotechnical test methods to study complex geotechnical problems. In this study, an extensive amount of geotechnical centrifuge experiments was conducted to analyze the load bearing behavior of pipe piles and piles with an innovative restriction plate. A customized loading frame was built to apply static loads. By using the scaling law, centrifuge experiments can scale up the model scale experiment to resemble the field scales. The pile diameters are scaled up by applying the centrifugal accelerations. With the validated experimental setup, the study conducted a program to systematically evaluate the influence of restriction plate on the loading bearing behaviors of large diameter open-end pipe piles. The results showed that by using restriction plates, the ultimate bearing capacity increased significantly compared with the corresponding open-ended pipe piles.
Geotechnical Centrifuge Experiments on Bearing Capacity of Pipe Piles
Large open-ended pipe piles have been widely used in offshore and transportation engineering. The design formula for the pipe piles in the current AASHTO specification is based on the load-bearing database of pipe piles with diameters less than 24 inches. Therefore, the load/resistance factors may be inaccurate for the design of large open-ended pipe piles. Centrifuge testing is one of the most commonly used geotechnical test methods to study complex geotechnical problems. In this study, an extensive amount of geotechnical centrifuge experiments was conducted to analyze the load bearing behavior of pipe piles and piles with an innovative restriction plate. A customized loading frame was built to apply static loads. By using the scaling law, centrifuge experiments can scale up the model scale experiment to resemble the field scales. The pile diameters are scaled up by applying the centrifugal accelerations. With the validated experimental setup, the study conducted a program to systematically evaluate the influence of restriction plate on the loading bearing behaviors of large diameter open-end pipe piles. The results showed that by using restriction plates, the ultimate bearing capacity increased significantly compared with the corresponding open-ended pipe piles.
Geotechnical Centrifuge Experiments on Bearing Capacity of Pipe Piles
Li, Jiale (author) / Guo, Yuan (author) / Yu, Xiong (Bill) (author)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 111-118
2019-03-21
Conference paper
Electronic Resource
English
Geotechnical Centrifuge Experiments on Bearing Capacity of Pipe Piles
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