Full-scale test on concrete piles under seismic loading

Tuladhar, Rabin, Mutsuyoshi, Hiroshi, and Maki, Takeshi (2006) Full-scale test on concrete piles under seismic loading. In: Proceedings of the First European Conference on Earthquake Engineering and Seismology, pp. 1-9. From: First European Conference on Earthquake Engineering and Seismology, 3 - 8 September 2006, Geneva, Switzerland.

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Abstract

Recent researches have clarified that the response behavior of a structure is highly influenced by the response of both the foundation and the ground as well. Hence, the modern seismic design code recommends the seismic response analysis of a whole structural system including superstructure, foundation and the ground. For the development of seismic response analysis method for a whole structural system, however, it is first imperative to clarify the seismic behavior of pile-soil system. In this study, full-scale lateral loading tests were carried out on concrete piles embedded into the ground. The test piles were hollow precast prestressed concrete piles with outer diameter of 45cm and thickness of 7cm. The length of the test piles were 14m. The experimental observations showed that the soil gap occurs between soil and pile in the face opposite to the loading direction. It further showed that significant degradation in lateral load carrying capacity of pile occurs when subjected to cyclic loading compared to the monotonic loading. The experimental data were used as the basis for 3D finite element analysis. In 3D finite element analysis, soil and pile were modeled as 20-node solid elements. The study showed that with proper consideration of interface element between soil and pile surface and the degradation of stiffness in soil due to cyclic loading, three dimensional finite element analyses can simulate the seismic behavior of the concrete pile well.

Item ID: 16770
Item Type: Conference Item (Non-Refereed Research Paper)
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ISBN: 978-1-61567-675-0
Date Deposited: 06 Sep 2011 02:53
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090506 Structural Engineering @ 50%
09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 40%
09 ENGINEERING > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified @ 10%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 50%
87 CONSTRUCTION > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials @ 50%
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