Imperfect interface model and dynamic interaction mechanism around tunnels under seismic waves: A review

Fang, Xue-Qian; Ma, Hongyu; Zhu, Chang-Song; Ding, Qi-Le; Zhu, Zhiming; Han, Zijie

doi:10.1016/j.tust.2023.105120

Cited by 16 publications

(2 citation statements)

References 53 publications

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“…Given the ongoing evolution of urban construction, the practice of conducting tunnel construction in proximity to existing pile foundations and pile foundation construction near operational tunnels has become commonplace. Scholars worldwide have extensively investigated the reciprocal influence between tunnels and pile foundations [1][2][3]. The examination of tunnel excavation effects on nearby existing pile foundations primarily employs methods such as theoretical analysis, analysis of on-site monitoring data [4], finite element method (FEM) calculations, and physical model testing [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The established simplified analysis method in this paper is applicable for stress analysis of transfer structures, considering soil stratification, pile foundation behavior, and plate action simultaneously. 3 The practical application of transfer structures and the corresponding simplified analysis methods in engineering has substantiated the effectiveness of these simplified structures and analysis approaches.…”

Section: Introductionmentioning

confidence: 99%

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A Simplified Method for the Stress Analysis of Underground Transfer Structures Crossing Multiple Subway Tunnels

Yan,

Geng,

Dai

et al. 2024

CMES

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According to the design specifications, the construction of extended piles involves traversing the tunnel's upper region and extending to the underlying rock layer. To address this challenge, a subterranean transfer structure spanning multiple subway tunnels was proposed. Deliberating on the function of piles in the transfer structure as springs with axial and bending stiffness, and taking into account the force balance and deformation coordination conditions of beams and plates within the transfer structure, we established a simplified mechanical model that incorporates soil stratification by combining it with the Winkler elastic foundation beam model. The resolved established simplified mechanical model employed finite difference technology and the Newton-Simpson method, elucidating the mechanical mechanism of the transfer structure. The research findings suggest that the load carried by the upper structural columns can be transferred to the pile foundation beneath the beams through the transfer structure, subsequently reaching the deep soil layer and ensuring minimal impact on adjacent tunnels. The established simplified analysis method can be used for stress analysis of the transfer structure, concurrently considering soil stratification, pile foundation behavior, and plate action. The pile length, pile section size, and beam section size within the transfer structure should account for the characteristics of the upper load, ensuring an even distribution of the beam bending moment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Simplified Method for the Stress Analysis of Underground Transfer Structures Crossing Multiple Subway Tunnels

Yan,

Geng,

Dai

et al. 2024

CMES

View full text Add to dashboard Cite

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Thermal consolidation of layered saturated soil under time‐dependent loadings and heating considering interfacial flow contact resistance effect

Xie,

Wen,

et al. 2024

Num Anal Meth Geomechanics

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Due to the presence of tiny gaps at the interface of two layers of saturated soil, water seepage occurs at a slower rate within these gaps, resulting in laminar flow at the interface. Based on the Hagen‐Poiseuille law, a general imperfect flow contact model was established for layered saturated soil interfaces by introducing the flow contact transfer coefficient Rω and the flow partition coefficient ηω. The investigation focused on the thermal consolidation behavior of layered saturated soil foundations under variable loadings considering the flow contact resistance effect at the interface. By employing the Laplace transform and its inverse transform, a semi‐analytical solution for the thermal consolidation of layered saturated soil foundations was derived. In the context of a two‐layer soil system, the effects of Rω, ηω, and permeability coefficient k on the consolidation process were examined. The obtained results were then compared with three other interfacial contact models, thereby confirming the rationality of the presented model. The study findings revealed that the flow contact resistance effect leads to a clear jump in the pore water pressure. Furthermore, an increase in Rω and a decrease in ηω were found to significantly enhance displacement and pore water pressure, while having minimal impact on the temperature increment. These insights contribute to a more comprehensive understanding of the thermal consolidation behavior of layered saturated soil foundations and underscore the significance of accounting for the flow contact resistance effect in such analyses.

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Analysis of dynamic anti-plane characteristics of circular laminated structures with bimaterial media

Wang,

Yang,

Cao

et al. 2024

Acta Mech

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Imperfect interface model and dynamic interaction mechanism around tunnels under seismic waves: A review

Cited by 16 publications

References 53 publications

A Simplified Method for the Stress Analysis of Underground Transfer Structures Crossing Multiple Subway Tunnels

A Simplified Method for the Stress Analysis of Underground Transfer Structures Crossing Multiple Subway Tunnels

Thermal consolidation of layered saturated soil under time‐dependent loadings and heating considering interfacial flow contact resistance effect

Analysis of dynamic anti-plane characteristics of circular laminated structures with bimaterial media

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