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Influence of Test Method and Poisson’ s Ratio Effect on Pullout Performance of Anchor Bolt in Pile
https://orcid.org/http://orcid.org/0000-0002-6860-8659
https://orcid.org/http://orcid.org/0000-0002-2307-5836
https://orcid.org/http://orcid.org/0000-0003-4482-9294
The influence of load pattern and Poisson’ s ratio effect on the pullout performance of the anchor bolt, which were connected with pipe pile by core concrete, were investigated by three anchorage-beam pullout tests and one self-balanced pullout test. Theoretical and finite element analysis were also employed to explore the influence of load pattern and Poisson’ s ratio effect on the ultimate friction at the pipe-core-concrete contact surface. The results show that the load pattern and Poisson’ s ratio effect of pipe pile have a great influence on the pullout characteristics of the anchor bolt. The maximum relative displacements between core concrete and pipe pile and between anchor bolt and core concrete in self-balanced pullout test are 0.913 mm and 0.935 mm, respectively, which are significantly greater than that in anchorage-beam pullout test where the displacements are 0.292 mm and 0.500 mm, respectively. In the self-balanced test, the pipe pile is under compression and expands radially due to the Poisson’ s ratio effect. In the anchorage-beam test, on the contrary, the pipe pile is under tension and shrinks radially. As a consequence, the ultimate friction between core concrete and pipe pile in the anchorage-beam test is higher than that in the self-balanced test by 15.1% to 28.7%. Accordingly, the results of anchorage-beam pullout test are more sensible for the anchor bolt design.
Influence of Test Method and Poisson’ s Ratio Effect on Pullout Performance of Anchor Bolt in Pile
https://orcid.org/http://orcid.org/0000-0002-6860-8659
https://orcid.org/http://orcid.org/0000-0002-2307-5836
https://orcid.org/http://orcid.org/0000-0003-4482-9294
The influence of load pattern and Poisson’ s ratio effect on the pullout performance of the anchor bolt, which were connected with pipe pile by core concrete, were investigated by three anchorage-beam pullout tests and one self-balanced pullout test. Theoretical and finite element analysis were also employed to explore the influence of load pattern and Poisson’ s ratio effect on the ultimate friction at the pipe-core-concrete contact surface. The results show that the load pattern and Poisson’ s ratio effect of pipe pile have a great influence on the pullout characteristics of the anchor bolt. The maximum relative displacements between core concrete and pipe pile and between anchor bolt and core concrete in self-balanced pullout test are 0.913 mm and 0.935 mm, respectively, which are significantly greater than that in anchorage-beam pullout test where the displacements are 0.292 mm and 0.500 mm, respectively. In the self-balanced test, the pipe pile is under compression and expands radially due to the Poisson’ s ratio effect. In the anchorage-beam test, on the contrary, the pipe pile is under tension and shrinks radially. As a consequence, the ultimate friction between core concrete and pipe pile in the anchorage-beam test is higher than that in the self-balanced test by 15.1% to 28.7%. Accordingly, the results of anchorage-beam pullout test are more sensible for the anchor bolt design.
Influence of Test Method and Poisson’ s Ratio Effect on Pullout Performance of Anchor Bolt in Pile
https://orcid.org/http://orcid.org/0000-0002-6860-8659
https://orcid.org/http://orcid.org/0000-0002-2307-5836
https://orcid.org/http://orcid.org/0000-0003-4482-9294
The influence of load pattern and Poisson’ s ratio effect on the pullout performance of the anchor bolt, which were connected with pipe pile by core concrete, were investigated by three anchorage-beam pullout tests and one self-balanced pullout test. Theoretical and finite element analysis were also employed to explore the influence of load pattern and Poisson’ s ratio effect on the ultimate friction at the pipe-core-concrete contact surface. The results show that the load pattern and Poisson’ s ratio effect of pipe pile have a great influence on the pullout characteristics of the anchor bolt. The maximum relative displacements between core concrete and pipe pile and between anchor bolt and core concrete in self-balanced pullout test are 0.913 mm and 0.935 mm, respectively, which are significantly greater than that in anchorage-beam pullout test where the displacements are 0.292 mm and 0.500 mm, respectively. In the self-balanced test, the pipe pile is under compression and expands radially due to the Poisson’ s ratio effect. In the anchorage-beam test, on the contrary, the pipe pile is under tension and shrinks radially. As a consequence, the ultimate friction between core concrete and pipe pile in the anchorage-beam test is higher than that in the self-balanced test by 15.1% to 28.7%. Accordingly, the results of anchorage-beam pullout test are more sensible for the anchor bolt design.
Influence of Test Method and Poisson’ s Ratio Effect on Pullout Performance of Anchor Bolt in Pile
KSCE J Civ Eng
Fang, Qing (author) / Yang, Zhijun (author) / Zhang, Chuanyi (author) / Yi, Liming (author) / Fu, Xudong (author)
KSCE Journal of Civil Engineering ; 24 ; 3775-3784
2020-12-01
10 pages
Article (Journal)
Electronic Resource
English
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