Pile load testing is a critical component in deep foundation, providing crucial insights into pile behaviour, load carrying capacity and structural performance, thereby enhancing the reliability and safety of construction projects. Various testing methods exist to assess the vertical capacity of piles, including Static, Cyclic and High Strain Dynamic Pile load testing. The necessity of pile load testing lies in its ability to verify the design calculations and assumptions. In deep foundation, especially while using Pile as a foundation, it is difficult to predict the load carrying capacity that exactly matches with the field capacity. Even with thorough soil investigations and engineering analyses, uncertainties may exist regarding the actual behaviour of piles under load. The skin friction and end bearing capacity are two different components from which BCIS piles derive their capacity. However, exact prediction of skin friction and end bearing capacity becomes challenging. Cyclic pile load test is one of the popular methods of pile load testing in which both skin friction and end bearing capacity of the pile can be obtained separately. For a construction project, Cyclic pile load testing has been adopted to effectively finalize the length of the pile. Due to the nearby river, the subsoil strata are erratic, with soft clay deposits at depths exceeding 30 m. This study compares the skin friction capacity obtained from Cyclic, High strain dynamic and Pull-out pile load tests. It was observed that the capacities obtained from Cyclic and Pull-out pile load testing are closely matched. However, the skin friction capacity obtained from the Dynamic test is higher than the capacities obtained from Cyclic and Pull-out testing. A comparison made between Cyclic, Dynamic and Pull-out pile load tests. Based on these findings, Cyclic pile load testing can effectively utilized in place of Pull-out pile load testing to obtain the uplift capacity of the pile. Furthermore, the same test results from Cyclic pile load testing can be utilized to determine both the tension and compression capacities of the pile, further highlighting the versatility and efficiency of this testing method.

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Evaluating Pile Performance in Soft Clay Conditions—A Multi-test Approach Combining Cyclic, High Strain Dynamic and Pull-Out Pile Load Testing

  • K. Vamsi Krishna,
  • V. Jaya Pragash

摘要

Pile load testing is a critical component in deep foundation, providing crucial insights into pile behaviour, load carrying capacity and structural performance, thereby enhancing the reliability and safety of construction projects. Various testing methods exist to assess the vertical capacity of piles, including Static, Cyclic and High Strain Dynamic Pile load testing. The necessity of pile load testing lies in its ability to verify the design calculations and assumptions. In deep foundation, especially while using Pile as a foundation, it is difficult to predict the load carrying capacity that exactly matches with the field capacity. Even with thorough soil investigations and engineering analyses, uncertainties may exist regarding the actual behaviour of piles under load. The skin friction and end bearing capacity are two different components from which BCIS piles derive their capacity. However, exact prediction of skin friction and end bearing capacity becomes challenging. Cyclic pile load test is one of the popular methods of pile load testing in which both skin friction and end bearing capacity of the pile can be obtained separately. For a construction project, Cyclic pile load testing has been adopted to effectively finalize the length of the pile. Due to the nearby river, the subsoil strata are erratic, with soft clay deposits at depths exceeding 30 m. This study compares the skin friction capacity obtained from Cyclic, High strain dynamic and Pull-out pile load tests. It was observed that the capacities obtained from Cyclic and Pull-out pile load testing are closely matched. However, the skin friction capacity obtained from the Dynamic test is higher than the capacities obtained from Cyclic and Pull-out testing. A comparison made between Cyclic, Dynamic and Pull-out pile load tests. Based on these findings, Cyclic pile load testing can effectively utilized in place of Pull-out pile load testing to obtain the uplift capacity of the pile. Furthermore, the same test results from Cyclic pile load testing can be utilized to determine both the tension and compression capacities of the pile, further highlighting the versatility and efficiency of this testing method.