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Experimental Study on Vertical Bearing Behavior of Composite Foundation with Tapered Rigid Pile
In order to study the vertical bearing behavior of composite foundation with tapered rigid pile, three static load model tests of composite foundation with 5 different tapered rigid piles were performed as well as a static model test of composite foundation with 5 cylindrical rigid piles under the same geological conditions. The test results indicated that the average pile-soil stress ratio of composite foundation with tapered pile is lower than that of cylindrical rigid piles. Tapered pile was beneficial to take full advantage of the bearing capacity of natural foundation and could effectively relief pile-tip stress concentration in composite foundation. The axial forces decay gradually along pile depth under load. However, the axial force attenuation grads of tapered pile are larger than that of cylindrical rigid piles. The axial force attenuation speed of the center pile, which increases along pile depth with the increase of the obliquity, is much faster than that of corner pile in composite foundation with tapered rigid pile. The skin frictions of the piles mostly focus on the range from pile top to L/3 of the pile length.
Experimental Study on Vertical Bearing Behavior of Composite Foundation with Tapered Rigid Pile
In order to study the vertical bearing behavior of composite foundation with tapered rigid pile, three static load model tests of composite foundation with 5 different tapered rigid piles were performed as well as a static model test of composite foundation with 5 cylindrical rigid piles under the same geological conditions. The test results indicated that the average pile-soil stress ratio of composite foundation with tapered pile is lower than that of cylindrical rigid piles. Tapered pile was beneficial to take full advantage of the bearing capacity of natural foundation and could effectively relief pile-tip stress concentration in composite foundation. The axial forces decay gradually along pile depth under load. However, the axial force attenuation grads of tapered pile are larger than that of cylindrical rigid piles. The axial force attenuation speed of the center pile, which increases along pile depth with the increase of the obliquity, is much faster than that of corner pile in composite foundation with tapered rigid pile. The skin frictions of the piles mostly focus on the range from pile top to L/3 of the pile length.
Experimental Study on Vertical Bearing Behavior of Composite Foundation with Tapered Rigid Pile
He, Jie (author) / Liu, Jie (author) / Zhang, Ke-neng (author) / Min, Chang-qing (author) / Hu, Da (author)
GeoShanghai International Conference 2010 ; 2010 ; Shanghai, China
2010-05-14
Conference paper
Electronic Resource
English
Experimental Study on Vertical Bearing Behavior of Composite Foundation with Tapered Rigid Pile
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