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Applicability of Various Interpretation Criteria for Pre-bored Precast Concrete (PC) Piles Under Uplift Loading
https://orcid.org/http://orcid.org/0000-0002-6641-6418
https://orcid.org/http://orcid.org/0009-0002-8313-6028
An evaluation of the various interpretation criteria when applied to pre-bored precast concrete (PC) piles under uplift loading conditions is presented in this paper. Ten field load test results were collected and utilized for the analysis, and representative interpretation criteria were applied to these load test data to evaluate their relative merits and interrelationships. The load test database was separated into drained and undrained soils. Using the interpreted results from various interpretation methods, the normalized load-displacement curve was established to assess the possible location of each method along the curve. The L1 method provided the initial loading stage at mean displacements of 2.3 mm for drained and 4.9 mm for undrained soils. The interpretations of DeBeer, slope-tangent, van der Veen, and L2 all fell on the transition region to the initial stage of the final linear region of the normalized load-displacement curve, with mean displacements ranging from 5.1 mm to 10.8 mm for drained soils and 10.3 mm to 24.0 mm for undrained soils. On the other hand, Fuller and Hoy and Chin overestimated the capacities, with mean displacements exceeding 15.9 mm for drained soils and 33.0 mm for undrained soils. Normalized load-displacement equations have also been developed and proposed for engineering practice and future designs of pre-bored PC piles under uplift loading for both soil conditions.
Applicability of Various Interpretation Criteria for Pre-bored Precast Concrete (PC) Piles Under Uplift Loading
https://orcid.org/http://orcid.org/0000-0002-6641-6418
https://orcid.org/http://orcid.org/0009-0002-8313-6028
An evaluation of the various interpretation criteria when applied to pre-bored precast concrete (PC) piles under uplift loading conditions is presented in this paper. Ten field load test results were collected and utilized for the analysis, and representative interpretation criteria were applied to these load test data to evaluate their relative merits and interrelationships. The load test database was separated into drained and undrained soils. Using the interpreted results from various interpretation methods, the normalized load-displacement curve was established to assess the possible location of each method along the curve. The L1 method provided the initial loading stage at mean displacements of 2.3 mm for drained and 4.9 mm for undrained soils. The interpretations of DeBeer, slope-tangent, van der Veen, and L2 all fell on the transition region to the initial stage of the final linear region of the normalized load-displacement curve, with mean displacements ranging from 5.1 mm to 10.8 mm for drained soils and 10.3 mm to 24.0 mm for undrained soils. On the other hand, Fuller and Hoy and Chin overestimated the capacities, with mean displacements exceeding 15.9 mm for drained soils and 33.0 mm for undrained soils. Normalized load-displacement equations have also been developed and proposed for engineering practice and future designs of pre-bored PC piles under uplift loading for both soil conditions.
Applicability of Various Interpretation Criteria for Pre-bored Precast Concrete (PC) Piles Under Uplift Loading
https://orcid.org/http://orcid.org/0000-0002-6641-6418
https://orcid.org/http://orcid.org/0009-0002-8313-6028
An evaluation of the various interpretation criteria when applied to pre-bored precast concrete (PC) piles under uplift loading conditions is presented in this paper. Ten field load test results were collected and utilized for the analysis, and representative interpretation criteria were applied to these load test data to evaluate their relative merits and interrelationships. The load test database was separated into drained and undrained soils. Using the interpreted results from various interpretation methods, the normalized load-displacement curve was established to assess the possible location of each method along the curve. The L1 method provided the initial loading stage at mean displacements of 2.3 mm for drained and 4.9 mm for undrained soils. The interpretations of DeBeer, slope-tangent, van der Veen, and L2 all fell on the transition region to the initial stage of the final linear region of the normalized load-displacement curve, with mean displacements ranging from 5.1 mm to 10.8 mm for drained soils and 10.3 mm to 24.0 mm for undrained soils. On the other hand, Fuller and Hoy and Chin overestimated the capacities, with mean displacements exceeding 15.9 mm for drained soils and 33.0 mm for undrained soils. Normalized load-displacement equations have also been developed and proposed for engineering practice and future designs of pre-bored PC piles under uplift loading for both soil conditions.
Applicability of Various Interpretation Criteria for Pre-bored Precast Concrete (PC) Piles Under Uplift Loading
Lecture Notes in Civil Engineering
Ha-Minh, Cuong (editor) / Pham, Cao Hung (editor) / Vu, Hanh T. H. (editor) / Huynh, Dat Vu Khoa (editor) / Chen, Yit-Jin (author) / Jos, Mary Abigail (author)
International Conference series on Geotechnics, Civil Engineering and Structures ; 2024 ; Ho Chi Minh City, Vietnam
2024-06-01
9 pages
Article/Chapter (Book)
Electronic Resource
English
Uplift capacity of bored piles in sand
| British Library Conference Proceedings | 2004