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Kinematic responses of a pipe pile embedded in a poroelastic soil to seismic P waves
https://orcid.org/http://orcid.org/0000-0002-8057-4914
In this paper, the kinematic responses of a pipe pile embedded in a poroelastic soil layer with rigid substratum under time-harmonic seismic P waves are studied with analytical development. The pipe pile is regarded as a two-dimensional (2D) hollow bar with both vertical and radial deformations, and its equations of motion are established by using the Hamilton’s variational principle. Both the inner and outer soils around the pile are treated as three-dimensional fluid-filled porous continuum which are described with the Boer’s poroelastic medium model. Firstly, the soil skeleton volume strain and the pore liquid pressure designated as intermediate variables are employed to cope with the soil’s motion equations. Then with the aid of the separation variables method, the pile–soil motion equations are solved. Upon the pile–soil boundary and interfacial conditions, the analytical solutions for the kinematic amplification coefficient and kinematic response factor describing the pile–soil seismic effects are derived. The proposed solutions are verified by the comparisons with the numerical results of the reported solutions and the corresponding finite element model (FEM). Finally, the parametric analyses on the dynamic characteristics of the coupling pile–soil system under different pile–soil parameters are performed, and relevant meaningful conclusions are also included.
Kinematic responses of a pipe pile embedded in a poroelastic soil to seismic P waves
https://orcid.org/http://orcid.org/0000-0002-8057-4914
In this paper, the kinematic responses of a pipe pile embedded in a poroelastic soil layer with rigid substratum under time-harmonic seismic P waves are studied with analytical development. The pipe pile is regarded as a two-dimensional (2D) hollow bar with both vertical and radial deformations, and its equations of motion are established by using the Hamilton’s variational principle. Both the inner and outer soils around the pile are treated as three-dimensional fluid-filled porous continuum which are described with the Boer’s poroelastic medium model. Firstly, the soil skeleton volume strain and the pore liquid pressure designated as intermediate variables are employed to cope with the soil’s motion equations. Then with the aid of the separation variables method, the pile–soil motion equations are solved. Upon the pile–soil boundary and interfacial conditions, the analytical solutions for the kinematic amplification coefficient and kinematic response factor describing the pile–soil seismic effects are derived. The proposed solutions are verified by the comparisons with the numerical results of the reported solutions and the corresponding finite element model (FEM). Finally, the parametric analyses on the dynamic characteristics of the coupling pile–soil system under different pile–soil parameters are performed, and relevant meaningful conclusions are also included.
Kinematic responses of a pipe pile embedded in a poroelastic soil to seismic P waves
https://orcid.org/http://orcid.org/0000-0002-8057-4914
In this paper, the kinematic responses of a pipe pile embedded in a poroelastic soil layer with rigid substratum under time-harmonic seismic P waves are studied with analytical development. The pipe pile is regarded as a two-dimensional (2D) hollow bar with both vertical and radial deformations, and its equations of motion are established by using the Hamilton’s variational principle. Both the inner and outer soils around the pile are treated as three-dimensional fluid-filled porous continuum which are described with the Boer’s poroelastic medium model. Firstly, the soil skeleton volume strain and the pore liquid pressure designated as intermediate variables are employed to cope with the soil’s motion equations. Then with the aid of the separation variables method, the pile–soil motion equations are solved. Upon the pile–soil boundary and interfacial conditions, the analytical solutions for the kinematic amplification coefficient and kinematic response factor describing the pile–soil seismic effects are derived. The proposed solutions are verified by the comparisons with the numerical results of the reported solutions and the corresponding finite element model (FEM). Finally, the parametric analyses on the dynamic characteristics of the coupling pile–soil system under different pile–soil parameters are performed, and relevant meaningful conclusions are also included.
Kinematic responses of a pipe pile embedded in a poroelastic soil to seismic P waves
Acta Geotech.
Zhang, Shiping (author) / Xu, Zhan (author) / Deng, Chen (author)
Acta Geotechnica ; 17 ; 5533-5556
2022-12-01
24 pages
Article (Journal)
Electronic Resource
English
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