- Title
- Vertical response of a thin-walled pipe pile embedded in viscoelastic soil to a transient point load with application to low-strain integrity testing
- Creator
- Zheng, Changjie; Liu, Hanlong; Kouretzis, George P.; Sloan, Scott W.; Ding, Xuanming
- Relation
- Computers and Geotechnics Vol. 70, Issue October 2015, p. 50-59
- Publisher Link
- http://dx.doi.org/10.1016/j.compgeo.2015.07.016
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2015
- Description
- This paper presents an analytical method to compute the dynamic response of a thin-walled pipe pile due to a vertical transient point load acting on its head. Inspired from challenges faced during the interpretation of low-strain integrity tests on pipe piles, the proposed method moves beyond the widely used one-dimensional wave theory to consider the asymmetric nature of the problem, and stress wave propagation along both the vertical and circumferential directions. Coupling of pipe pile-viscoelastic soil vibration is considered via modeling the outer and inner soil as a series of infinitesimally thin layers in perfect contact with the pile, and their low-strain properties are directly introduced in the solution. The methodology is validated against numerical results, before discussing the mechanisms governing the dynamic response of the pipe pile-soil system to the impact load, with emphasis on the vertical velocity measured at a hypothetical receiver placed on the pile head. Additional results from a parametric analysis are used to provide insights on the accurate estimation of the arrival time of the receiving wave, and the optimal location of the receiver.
- Subject
- thin-walled pipe pile; wave propagation; low-strain integrity testing; pile dynamics
- Identifier
- http://hdl.handle.net/1959.13/1330719
- Identifier
- uon:26460
- Identifier
- ISSN:0266-352X
- Language
- eng
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