Cyclic behavior of laterally loaded concrete piles embedded into cohesive soil

Tuladhar, Rabin, Maki, Takeshi, and Mutsuyoshi, Hiroshi (2008) Cyclic behavior of laterally loaded concrete piles embedded into cohesive soil. Earthquake Engineering and Structural Dynamics, 37 (1). pp. 43-59.

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Modern seismic design codes stipulate that the response analysis should be conducted by considering the complete structural system including superstructure, foundation, and ground. However, for the development of seismic response analysis method for a complete structural system, it is first imperative to clarify the behavior of the soil and piles during earthquakes. In this study, full-scale monotonic and reversed cyclic lateral loading tests were carried out on concrete piles embedded into the ground. The test piles were hollow, precast, prestressed concrete piles with an outer diameter of 300mm and a thickness of 60 mm. The test piles were 26m long. Three-dimensional (3D) finite element analysis was then performed to study the behavior of the experimental specimens analytically. The study revealed that the lateral load-carrying capacity of the piles degrades when subjected to cyclic loading compared with monotonic loading. The effect of the use of an interface element between the soil and pile surface in the analysis was also investigated. With proper consideration of the constitutive models of soil and pile, an interface element between the pile surface and the soil, and the degradation of soil stiffness under cyclic loading, a 3D analysis was found to simulate well the actual behavior of pile and soil.

Item ID: 11022
Item Type: Article (Research - C1)
ISSN: 1096-9845
Keywords: concrete pile; lateral loading; pile-soil interaction; seismic behavior
Date Deposited: 03 Jun 2010 05:39
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090504 Earthquake Engineering @ 20%
09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 40%
09 ENGINEERING > 0905 Civil Engineering > 090506 Structural Engineering @ 40%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 100%
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