A simplified analytical solution for deformation behavior of existing tunnels subjected to influences of landslides

Zhang, Zhiguo; Zhang, Mengxi; Zhao, Qihua; Fang, Lei; Ma, Shangjun; Li, Xilin

doi:10.1007/s10064-021-02230-5

Cited by 14 publications

(4 citation statements)

References 54 publications

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“…proposed a simplified analytical method to evaluate deformation caused by landslides in existing tunnels and then used the transfer coefficient method and the limit equilibrium method to calculate the landslide pressure. They then compared their three-dimensional numerical simulation results with a simplified analytical solution, and good consistency was achieved [19]. Zhu et al (2021) studied the causes, stress modes, and deformation characteristics of landslide collapse, looking at the interaction between tunnel landslides under an orthogonal tunnel and sliding surface system.…”

Section: Introductionmentioning

confidence: 98%

Landslide–Tunnel Interactions and Control Countermeasures under an Orthogonal System

Chen,

Li,

et al. 2024

Applied Sciences

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When a tunnel crosses a landslide orthogonally, this interaction can easily lead to instability in both the landslide and tunnel structures. Based on the relative positional relationship between a landslide and a tunnel, we studied the stress mode and deformation characteristics of the tunnel in three positional relationships: within the landslide mass, the sliding surface, and the sliding bed. The tunnel is a typical type located on a sliding surface at an engineering site, so we established a numerical model showing the intersection of the tunnel and the sliding surface. The plastic zone distribution, stress characteristics, and displacement distribution characteristics of the surrounding rock before and after tunnel excavation were studied. Based on the simulation results, we analyzed the control effect of anti-slide piles in controlling the tunnel’s deformation in the surrounding rock from four perspectives: the arrangement of anti-slide piles, the spacing between piles and tunnels, the diameter of anti-slide piles, and the depth of piles embedded in the bedrock. By analyzing the deformation law of the landslide mass and the force characteristics of the tunnel structure under the orthogonal conditions of a tunnel landslide, we provide theoretical guidance for the adoption of anti-slide piles to control instability in tunnel structures.

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Section: Introductionmentioning

confidence: 98%

Landslide–Tunnel Interactions and Control Countermeasures under an Orthogonal System

Chen,

Li,

et al. 2024

Applied Sciences

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“…In general, the design landslide pressure can be used in the design of the retaining structure to reinforce a landslide; however, this method cannot provide the ULS of the landslide. For a special case, i.e., a tunnel crossing a landslide (Bandini et al, 2015;Vassallo et al, 2019;Zhang et al, 2021), the design factor of safety of the landslide does not guarantee that the deformation of the tunnel caused by the reinforced landslide is allowed.…”

Section: Introductionmentioning

confidence: 99%

A limit equilibrium method for the limiting landslide pressure acting on a retaining structure

Liu

2023

Preprint

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A novel limit equilibrium method is proposed for calculating the limiting landslide force acting on a planar sliding layer and on a retaining structure. The limiting landslide force can be determined by the horizontal force balance equation of the rigid block in the limit state adjacent to the retaining structure. Comparisons of the results obtained with the proposed method with the results obtained with the finite element method and limit analysis show that although the landslide pressure on one side of the rigid block is determined by the approximate method of curve fitting, the proposed method can be used in the design of landslide prevention. The proposed method can also analyse the influence of the soil-wall friction and the strength of the weak layer on the limiting landslide force. In addition, a simple, approximate, logarithmic spiral passive earth pressure theory-based formula is proposed to estimate the limiting landslide pressure for practical application.

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“…Chiu et al (2017) used the deformation of the tunnel lining to determine the forces on the lining under a landslide. Zhang, Zhang, et al (2021) and Wu et al (2018) proposed an analytical formula for calculation of the minimum safe distance and the safety factor of the mutual influence between the tunnel and the sliding plane. Tao (2003) and Pai (2022) investigated the effectiveness and methods of using anti‐slide piles to treat landslide damage in tunnels, and explored the application scope and the pile placement method.…”

Section: Introductionmentioning

confidence: 99%

Shaking table test and cumulative deformation evaluation analysis of a tunnel across the hauling sliding surface

Pai

Wu²,

2023

Deep Underground Science and Engineering

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To explore the cumulative deformation effect of the dynamic response of a tunnel crossing the hauling sliding surface under earthquakes, the shaking table test was conducted in this study. Combined with the numerical calculations, this study proposed magnification of the Arias intensity (MIa) to characterize the overall local deformation damage of the tunnel lining in terms of the deformation characteristics, frequency domain, and energy. Using the time‐domain analysis method, the plastic effect coefficient (PEC) was proposed to characterize the degree of plastic deformation, and the applicability of the seismic cumulative failure effect (SCFE) was discussed. The results show that the low‐frequency component (f1 and f2 ≤ 10 Hz) and the high‐frequency component (f3 and f4 > 10 Hz) acceleration mainly cause global and local deformation of the tunnel lining. The local deformation caused by the high‐frequency wave has an important effect on the seismic damage of the lining. The physical meaning of PEC is more clearly defined than that of the residual strain, and the SCFE of the tunnel lining can also be defined. The SCFE of the tunnel lining includes the elastic deformation effect stage (<0.15g), the elastic–plastic deformation effect stage (0.15g–0.30g), and the plastic deformation effect stage (0.30g–0.40g). This study can provide valuable theoretical and technical support for the construction of traffic tunnels in high‐intensity earthquake areas.

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A simplified analytical solution for deformation behavior of existing tunnels subjected to influences of landslides

Cited by 14 publications

References 54 publications

Landslide–Tunnel Interactions and Control Countermeasures under an Orthogonal System

Landslide–Tunnel Interactions and Control Countermeasures under an Orthogonal System

A limit equilibrium method for the limiting landslide pressure acting on a retaining structure

Shaking table test and cumulative deformation evaluation analysis of a tunnel across the hauling sliding surface

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