Stability Analysis of Rock Slope with Small Spacing Tunnel under Earthquakes and Influence of Ground Motion Parameters

Niu, Jiayong; Jiang, Xueliang; Wang, Feifei

doi:10.1007/s10706-018-0475-1

Cited by 25 publications

(6 citation statements)

References 19 publications

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“…hanging wall) points of Figure 4 15). Regarding the topographical characteristics, it was reported not only that the upper part of the slope is more dangerous than the lower part [40] but also that the toe part of the slope is more dangerous because stress and displacement are concentrated [43]. It can be different depending on the distributions of the materials comprising the slope and the influence of adjacent structures.…”

Section: Discussionmentioning

confidence: 99%

Effects of Earthquake on Behavior Characteristics of Fault Gouge in Time-History Analysis of Slope

Moon

Kim

Seo

2022

Advances in Materials Science and Engineering

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A time-history analysis, based on the finite element method, was performed to identify the behavior of a slope containing fault gouge during earthquakes. Input seismic waves were obtained from earthquake data measured in Korea, with five earthquakes (M3.0, M3.9, M5.1, M5.4, and M5.8) to analyse the magnitude effects. The acceleration effects indicate approximately 50%–110% residual shear strain depending on the acceleration fluctuation within the coda wave section after the maximum acceleration was reached. This indicates that the permanent deformation due to the earthquake will remain because the ground is an elastic-plastic material. The magnitude effects also indicate that both the maximum shear stress and strain increase simultaneously as the magnitude increases and as the maximum acceleration tends to increase with increasing magnitude. However, both the cumulative and maximum accelerations should be considered when assessing slope stability since both the maximum shear stress and strain are affected by these two accelerations. Analysis of the presence or absence of fault gouge indicates that the shear strain could be concentrated on fault gouge, which is easily deformed or destroyed by shear strain.

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Section: Discussionmentioning

confidence: 99%

Effects of Earthquake on Behavior Characteristics of Fault Gouge in Time-History Analysis of Slope

Moon

Kim

Seo

2022

Advances in Materials Science and Engineering

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“…is FE code has been applied successfully in solving many geotechnical problems such as slope stability [41], soil-structure interactions [42][43][44], excavations [45][46][47][48], tunnelling [49], and fluid-mechanical interactions [50].…”

Section: Finite Element Codementioning

confidence: 99%

Ground Deformation Characteristics Induced by Mechanized Shield Twin Tunnelling along Curved Alignments

Guo

et al. 2021

Advances in Civil Engineering

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This paper investigates the ground deformation characteristics induced by mechanized shield twin tunnelling along curved alignments by adopting the nonlinear three-dimensional (3D) finite element method (FEM). The performance of the adopted FEM is demonstrated to be satisfactory by comparing the numerical analysis results with the field monitoring data in a typical case history and with the predicted results generated by a modified version of the Peck’s empirical Gaussian formula. It has been found that the tunnelling-induced transverse ground surface settlement troughs and the distributions of the subsurface horizontal and vertical ground displacements are mostly similar in both form and magnitude for the considered various radii of curvature of tunnel alignment including 50 m, 100 m, 150 m, 200 m, 250 m, 300 m, 400 m, and infinity (i.e., straight-line tunnel). Considering the variational characteristics of the ground deformations with the magnitude of the radius of curvature, the radius of curvature of 100 m can be regarded as a critical tunnel alignment radius of curvature controlling the transformation of the curved tunnelling-induced ground deformational behaviors. For the benefit of geotechnical engineers interested in curved tunnelling with a small radius of curvature, a discussion of the technologies for reducing the overexcavation and improving the accuracy of tunnel lining segment installation is also presented.

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“…The acceleration sensor is used in the experiment. The sensor is all arranged at the key point position of the tunnel inside the tunnel, which is used to measure the acceleration response of the tunnel [30][31][32].…”

Section: Verification Of Shaking Table Testmentioning

confidence: 99%

Acceleration and displacement dynamic response laws of a shallow-buried bifurcated tunnel

Wang¹,

Ren²,

Ping-hua³

et al. 2019

J. vibroeng.

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In order to obtain the seismic dynamic laws of the acceleration and displacement of a shallow-buried bifurcated tunnel, the analysis of the numerical simulation was carried out by MIDAS-GTS/NX software. The results of the numerical simulation were verified by a shaking table model test. The results show that: (1) the numerical simulation and shaking table test coincide with each other in terms of variation law and peak value. The results of the numerical simulation are credible. (2) For different tunnel cross-section, the response of acceleration and displacement are significant difference. (3) The seismic response of the small distance tunnel (Section 6) is intense. The seismic response laws of the small distance tunnel are significant difference from other type tunnels. The seismic response of the measuring point at the middle rock column is intense. (4) Along the axis of the tunnel, the displacement of the tunnel firstly increases and then decreases. The displacement of the measuring point at the middle rock column is intense, which is in accordance with the law of the acceleration response. The seismic response laws of the tunnel are significantly affected by the middle rock column. The section structure size has a significant effect on the dynamic response of the tunnel.

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Stability Analysis of Rock Slope with Small Spacing Tunnel under Earthquakes and Influence of Ground Motion Parameters

Cited by 25 publications

References 19 publications

Effects of Earthquake on Behavior Characteristics of Fault Gouge in Time-History Analysis of Slope

Effects of Earthquake on Behavior Characteristics of Fault Gouge in Time-History Analysis of Slope

Ground Deformation Characteristics Induced by Mechanized Shield Twin Tunnelling along Curved Alignments

Acceleration and displacement dynamic response laws of a shallow-buried bifurcated tunnel

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