- Title
- Kinematic response of floating piles in a saturated soil layer subjected to seismic S-wave propagation
- Creator
- Zheng, Changjie; Kouretzis, George; Ding, Xuanming
- Relation
- Computers and Geotechnics Vol. 161, no. 105573
- Publisher Link
- http://dx.doi.org/10.1016/j.compgeo.2023.105573
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2023
- Description
- A mathematical formulation for the seismic analysis of floating piles embedded in a saturated soil layer to vertically propagating S waves is presented in this paper. Pivotal to the formulation is the establishment of a closed-form expression for the lateral soil reaction to pile displacement, and results from expressions for the free-field and scattered soil displacements obtained from Biot's governing equations. Subsequently the pile is analysed as Euler-Bernoulli beam and the soil column between the pile tip and the bedrock is analysed as one-dimensional shear beam. This results in expressions for the kinematic response factors, that provide the frequency-dependent pile head displacement and rotation as function of the free-field soil movement. Validation of the developed model is followed by a discussion on the sensitivity of pile response to the two-phase nature of soil, focused on informing researchers and practitioners on the uncertainties introduced in conventional seismic analysis, where the foundation soil is modelled as single-phase medium.
- Subject
- seismic waves; floating piles; kinematic soil-pile interaction; saturated soil
- Identifier
- http://hdl.handle.net/1959.13/1489287
- Identifier
- uon:52674
- Identifier
- ISSN:0266-352X
- Language
- eng
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