Seismic Stability of a Tunnel Considering the Dynamic Geologic Parameters of Loess

Cheng, Xuansheng; Li, Xinlei; Fan, Jing; Li, Guoliang

doi:10.1007/s10706-018-0559-y

Cited by 4 publications

(2 citation statements)

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“…Dividing both sides of Equation ( 25) by 4b 4 and omitting the constant term that has no effect on the eigenvalues of the mutation yields the transformed cusp mutation model: (28) where V(x) is the potential function, x is the state variable, and u and v are the control variables.…”

Section: Relative Displacement Ratio Mutation Criterion In Dynamic An...mentioning

confidence: 99%

“…These criteria are qualitative judging methods [24]. In addition, Kumar et al [25,26] proposed non-dimensional stability numbers for evaluating the stability of unsupported circular tunnels under seismic loading; Liu et al [27] proposed a dynamic analysis method for seismic-stability evaluation of underground tunnels based on deformation reinforcement theory; and Cheng et al [28] investigated the effect of the dynamic parameters of the soil body on the factor of safety as a criterion for evaluating the seismic stability of tunnels. Existing research methods have some limitations.…”

Section: Introductionmentioning

confidence: 99%

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Seismic Response and Security Assessment of Cross-Fault Hydraulic-Tunnel Lining Structures

Yuan,

Xiao,

Kong

et al. 2023

Buildings

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The foundation of a seismic safety assessment of cross-fault hydraulic tunnels is an acceptable and accurate seismic response. A dynamic contact force algorithm that may take into consideration the interaction between the fault–surrounding rock–lining structure was devised in light of the contact characteristics of various media in cross-fault hydraulic tunnels under seismic activity. A quantitative instability criterion using a relative displacement ratio as the criterion was devised based on the cusp catastrophe model. By using the cross-fault hydraulic tunnel of the Lawa Hydropower Station as an example, it was possible to evaluate and assess the impacts of four working circumstances on the seismic response of the tunnel lining structure. The findings demonstrated that the lining haunch exhibited stronger stress and displacement responses when subjected to seismic activity. The consideration of fault–surrounding rock–lining interaction exacerbated the displacement and stress seismic responses of the lining structure. The haunch, bottom arch, and top arch of the lining’s characteristic parts—which ranged in size from large to small—responded more seismically as peak ground acceleration rose. Applying the aforementioned instability criterion, the haunch, bottom arch, and top arch of the liner structure could withstand maximum peak ground accelerations of 0.10 g, 0.20 g, and 0.35 g, respectively. The aforementioned technique offers a fresh perspective on how to evaluate the seismic response and seismic safety of the tunnel’s lining structure, and the study’s findings can serve as a guide for seismic design.

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Section: Relative Displacement Ratio Mutation Criterion In Dynamic An...mentioning

confidence: 99%