The Role of Block Ratio and Layer Thickness on Rock Slopes Movement Style

Alzo’ubi, Abdel Kareem

doi:10.21660/2015.16.4295

Cited by 2 publications

(2 citation statements)

References 12 publications

(28 reference statements)

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“…Considering the high cost and time consuming of the test, in this paper, numerical simulation is carried out on the basis of experiments, which is in accordance with the measured methods in previous references [23][24][25]. Firstly, the finite element model was verified for correctness, then the beamspring model was introduced to consider the stiffness weakening at the shield tube joints, and its feasibility was demonstrated by comparing with the model test results.…”

Section: Numerical Simulation Analysis Of Structural Response Of Subway Shield Tunnel Lining Under the Influence Of Single Cavitymentioning

confidence: 89%

Analysis of Structural Response of Subway Shield Tunnel Lining under the Influence of Cavities

Shi

Chen

Wei

et al. 2021

Advances in Civil Engineering

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The existence of cavities behind the shield tunnel lining can cause cracking, broken pieces, water leakage, and other problems, which reduces the durability and safety of the shield tunnel segment structure. In order to clarify the mechanism of cavity damage, a more systematic study of the effects of cavities on the shield tunnel lining structure from the angle, depth, and the number of cavities is carried out using model tests and numerical simulations without considering the effects of the stiffness reduction effect at the tunnel segment joints and groundwater seepage in this paper. The findings show that the bending moment value and the cavity angle value are approximately linear with the increase of single cavity angle, and the bending moment at the vault arch is reversed when the angle of the cavity behind the arch is greater than 30°. With the increase of single cavity depth, the axial force and bending moment at the cavity increase, and the distribution of bending moment remains unchanged, and the bending moment tends to be stable and unchanged beyond a certain depth. With the increase of single cavity angle and depth, the structural safety coefficient of the segment decreases, and the degree of influence is angle value > depth value. The existence of multiple cavities intensifies the influence of each cavity on the segment, especially when there are cavities behind the top and bottom of the vault; the bending moment value of the top of the vault increases by 22.53% compared with that of the single cavity condition.

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Section: Numerical Simulation Analysis Of Structural Response Of Subway Shield Tunnel Lining Under the Influence Of Single Cavitymentioning

confidence: 89%

Analysis of Structural Response of Subway Shield Tunnel Lining under the Influence of Cavities

Shi

Chen

Wei

et al. 2021

Advances in Civil Engineering

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“…Figure 4 shows an example from their work. Alzo'ubi [48] also used a hybrid modeling modelling approach to observe the effect of layers thickness on the mode of instability. This hybrid approach is capable of modelling the evolving of non-directional physical rupture surface; it allows the formation, propagation, and coalescence of cracks inside rock slopes.…”

Section: Hybrids Methodsmentioning

confidence: 99%

Rock Slopes Processes and Recommended Methods for Analysis

Alzo’ubi¹

2016

Geomate

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ABSTRACT:The stability of rock slopes is of great concern in many engineering projects, for example; road cuts, foundations, retaining walls, and dam excavation. Generally, rock slopes susceptible to instability could be divided into two main categories, the structurally controlled slopes, and the complex rock slopes. In the later, rock slope instability would involve intact material fracturing to allow for rupture surface to be formed. Kinematics of a landslide or the type of movement or instability associated with the landsides is one of the principal criteria for classifying a landslide. In this paper, the modes of instabilities that have been observed in the field are discussed and examples are given. The most widely used methods of analysis of rock slopes such as, limit equilibrium, finite element, discrete element; boundary elements are discussed to highlight their advantages and disadvantages. In this paper, the classification and the methods of analysis are discussed to provide researches as well as engineers with the tools required to analyze and design rock slopes. In complex rock slopes, in civil or mining engineering, hybrid numerical methods must be adapted to better understand the behavior of rock slope. In the case of simple sliding slopes, Limit Equilibrium Techniques can be easily utilized.

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The Role of Block Ratio and Layer Thickness on Rock Slopes Movement Style

Cited by 2 publications

References 12 publications

Analysis of Structural Response of Subway Shield Tunnel Lining under the Influence of Cavities

Analysis of Structural Response of Subway Shield Tunnel Lining under the Influence of Cavities

Rock Slopes Processes and Recommended Methods for Analysis

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