The influence of the degree of saturation on dynamic response of a cylindrical lined cavity in a nearly saturated medium

Wang, Yufeng; Gao, Guanghai; Yang, Jun; Song, Jian

doi:10.1016/j.soildyn.2015.01.002

Cited by 14 publications

(4 citation statements)

References 9 publications

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“…However, the geotechnical medium in nature is partially saturated, that is, unsaturated soil, which consists of three phases and the influence of the presence of the pore gas phase on the dynamic response of the soil body cannot be disregarded (Steeb et al, 2014;Zhang et al, 2014a;Wang et al, 2015). Ye and Ai (2021) used the double Fourier transform to study the dynamic response of layered unsaturated soil under moving harmonic loads and compared it with the results of saturated porous elastic media.…”

Section: Introductionmentioning

confidence: 99%

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

Chen,

2024

Lat. Am. j. solids struct.

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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.

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Section: Introductionmentioning

confidence: 99%

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

Chen,

2024

Lat. Am. j. solids struct.

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“…Underground lining structures, such as subway tunnels, heat distribution pipelines, petroleum pipelines, and gas pipelines can generate high temperatures and pressures when subjected to endogenous explosive loads, which often cause extensive damage to the lining structure and the surrounding geomaterials, such as crushing, cracking, and deformation. In previous research, the problem of analyzing the underground lining structure under explosive loading was equivalent to the endogenous force load, which ignored the impact of high temperature caused by explosion [1][2][3][4][5]. At the moment of the explosion, the temperature and stress in the soil and lining interact with each other.…”

Section: Introductionmentioning

confidence: 99%

Thermal Diffusion Effects in a Tunnel with a Cylindrical Lining and Soil System under Explosive Loading

Wen

Xiong

2019

Mathematical Problems in Engineering

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An analytical method is employed to study the thermoelastic dynamic response of deep-buried circular tunnel lining-soil system under explosion load, considering thermal diffusion effects. The soil and lining are analyzed as homogeneous elastic media. Based on the generalized thermal diffusion theory and the classical thermal elasticity theory, the thermoelastic dynamic response of a soil-lining system in the event of an explosion is solved using the Laplace transform and Helmholtz decomposition. By using continuity boundary conditions, the corresponding numerical solution is obtained through an inverse Laplace transform. The calculated results are compared to those without the lining and without consideration for the diffusion effect. The effects are analyzed under thermal, mechanical, and chemical coupling of the lining and soil properties, and their geometric parameters on the temperature gradient, displacement, stress, and chemical potential of the system. It provides significant guidance for theoretical calculations and antiexplosion design of the lining tunnel.

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“…However, not only the fluid phase but also the air phase fills in the pores of the soil in reality and the air phase plays a pretty important role on the dynamic responses of the unsaturated soil under moving loads. In addition, the characteristics of an unsaturated soil medium and that of the traditional saturated soil medium show great differences in many aspects . Although these previous works have made great contributions to the development of the unsaturated dynamic theory, they did not include the study of the problems of a complete coupled vehicle and unsaturated ground system and a systematic analysis for the influence of each factor in unsaturated soil as well as the vehicle load on the dynamic response at the same time.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the characteristics of an unsaturated soil medium and that of the traditional saturated soil medium show great differences in many aspects. [20][21][22][23] Although these previous works have made great contributions to the development of the unsaturated dynamic theory, they did not include the study of the problems of a complete coupled vehicle and unsaturated ground system and a systematic analysis for the influence of each factor in unsaturated soil as well as the vehicle load on the dynamic response at the same time.The objective of this work is to analytically evaluate the dynamic responses of the half-space soil by modeling it as an unsaturated media. The vehicle load is regarded as a moving rectangular load.…”

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confidence: 99%

Dynamic responses of unsaturated half‐space soil to a moving harmonic rectangular load

Lü

Fang

Yao

et al. 2018

Num Anal Meth Geomechanics

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Summary The problem of the dynamic responses of a semi‐infinite unsaturated poroelastic medium subjected to a moving rectangular load is investigated analytical/numerically. The dynamic governing equations are obtained with consideration of the compressibility of solid grain and pore fluid, inertial coupling, and viscous drag as well as capillary pressure in the unsaturated soil, and they can be easily degraded to the complete Biot's theory. Using the Fourier transform, the general solution for the equations is derived in the transformed domain, and then a corresponding boundary value problem is formulated. By introducing fast Fourier transform algorithm, the unsaturated soil vertical displacements, effective stresses, and pore pressures induced by moving load are computed, and some of the calculated results are compared with those for the degenerated solution of saturated soils and confirmed. The influences of the saturation, the load speed, and excitation frequency on the response of the unsaturated half‐space soil are investigated. The numerical results reveal that the effects of these parameters on the dynamic response of the unsaturated soil are significant.

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The influence of the degree of saturation on dynamic response of a cylindrical lined cavity in a nearly saturated medium

Cited by 14 publications

References 9 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

Thermal Diffusion Effects in a Tunnel with a Cylindrical Lining and Soil System under Explosive Loading

Dynamic responses of unsaturated half‐space soil to a moving harmonic rectangular load

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