Vertically Dynamic Response of an End‐Bearing Pile Embedded in a Frozen Saturated Porous Medium under Impact Loading

Cao, Lu; Zhou, Bin; Li, Qiang; Duan, Weiwei; Shu, Wenli

doi:10.1155/2019/8983128

Cited by 6 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carcione and Seriani (2001), Carcione et al (2000Carcione et al ( , 2003 modified the saturated frozen soil model proposed by Leclaire by further considering the coupling effect between soil particle skeleton and pore ice. At present, the research on saturated frozen soil is mostly focused on wave propagation (Jiang et al, 2023a(Jiang et al, , 2023b and the dynamic response of piles (Li et al, 2019;Cao et al, 2019;Chen et al, 2023). The layered characteristics of foundation soil are not considered.…”

Section: Introductionmentioning

confidence: 99%

Dynamic response analysis of layered saturated frozen soil foundation subjected to moving loads

Chen,

2024

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

Based on the theory of solid porous media with pores, the dynamic response of layered saturated frozen soil under uniform moving load is studied. Firstly, the governing equation of saturated frozen soil is established. Then, the Fourier integral transform is used to decouple the governing equation of saturated frozen soil, and the general solution of the potential function is obtained, and the corresponding force and displacement of each layer of saturated frozen soil are derived. Finally, using the transfer matrix method, combined with the continuous condition, the semi-analytical solution of the layered saturated frozen soil medium in the frequency domain under the surface permeable condition is derived. After verifying the accuracy of the solution by comparing the model degradation with the existing literature, the effects of soil shear modulus, load moving speed, temperature, contact parameter and frequency on the dynamic response are analyzed in detail. The results show that the order of soft and hard soil layers is of great significance to accurately evaluate the dynamic response of saturated frozen soil.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamic response analysis of layered saturated frozen soil foundation subjected to moving loads

Chen,

2024

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

show abstract

“…They found that the properties of frozen soil have a great influence on the dynamic response of a pile foundation. Cao et al [32] assumed that the water in soil gradually condenses into ice when the temperature is close to the freezing point and analyzed the influence of the change in soil ice content on the cementation between solid particles and the dynamic characteristics of a pile foundation. Due to the difference in the thickness of frozen soil layers, there is a large number of non-end-bearing piles that are utilized in frozen soil areas.…”

Section: Introductionmentioning

confidence: 99%

Semi-Analytical Solution for the Vertical Vibration of a Single Pile Embedded in a Frozen Poroelastic Half-Space

Chen

Wang

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

The theory of vertical pile vibration is the essential basis for pile integrity determination and dynamic analysis. The pile vibration characteristics are inevitably affected when the surrounding soil is frozen due to the low environmental temperature. Therefore, the investigation of pile vibration considering the surrounding soil as a saturated frozen porous medium is of great importance. In this paper, an analytical model for vertical pile vibration was established by employing the theory of composite saturated porous media, that is, by simplifying the upper frozen soil layer as a homogeneous isotropic saturated frozen porous medium and the foundation soil beneath the pile as an elastic half-space subjected to the motion of a rigid disk. By employing the integral transform and variable separation method, analytical solutions for the proposed model were derived under the three-dimensional axisymmetric condition. The analytical model and its solutions were verified by comparing them with the existing solutions for an end-bearing pile embedded in a homogeneously frozen soil layer as well as for a saturated half-space. A parametric study was conducted by utilizing the proposed solutions, and the results indicated that the pile bottom stiffness, the freezing temperature, the shear modulus of the unfrozen soil, etc., had a significant influence on the dynamic responses of the vertical pile vibration in both the frequency and the time domains.

show abstract

Dynamic response of a large-diameter end-bearing pile in permafrost

Li,

Zhang,

Chen

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Vertically dynamic model of a large-diameter pile in frozen soil is established, in which the frozen soil is described to a saturated frozen porous media, and the large diameter end-bearing pile is simplified to a one-dimensional rod considering the influence of the transverse inertia effect. Analytical solutions of the longitudinal coupling vibration between the end-bearing pile and the frozen soil are obtained using Helmholtz decomposition and variable separation methods in the frequency domain. By comparing the dynamic responses of the longitudinal vibration of the large diameter end-bearing pile with the traditionally one-dimensional pile, as well as the impedance factor of the frozen soil layer induced by the pile vibration, these demonstrate the influence of the transverse inertia effect on the high frequency vibration of large diameter pile is significant, and the influence on the pile with a smaller slenderness ratio is larger. The temperature and the Poisson’s ratio also have significant effects on the vertical vibration of large diameter piles in frozen soil, which cannot be ignored in the analysis.

show abstract

Vertically Dynamic Response of an End‐Bearing Pile Embedded in a Frozen Saturated Porous Medium under Impact Loading

Cited by 6 publications

References 43 publications

Dynamic response analysis of layered saturated frozen soil foundation subjected to moving loads

Dynamic response analysis of layered saturated frozen soil foundation subjected to moving loads

Semi-Analytical Solution for the Vertical Vibration of a Single Pile Embedded in a Frozen Poroelastic Half-Space

Dynamic response of a large-diameter end-bearing pile in permafrost

Contact Info

Product

Resources

About