Simulating quasi-brittle failures including damage-induced softening based on the mechanism of stress redistribution

Liu, Jinxing

doi:10.1016/j.apm.2017.11.014

Cited by 4 publications

(3 citation statements)

References 28 publications

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“…Assume that the coordinate of a point in the point cloud is P(x, y, z) and the spatial scale of the point cloud is L(x, y, z, σ). The relationship between the point coordinate and the spatial scale is as shown in Equation (1).…”

Section: Sift Feature Extractionmentioning

confidence: 99%

“…The original stress state of natural or artificial slopes will change in the process of geological evolution and engineering construction, resulting in stress redistribution and stress concentration [1]. In order to adapt to the new stress state, the rock and soil of slope will undergo different forms and scales of deformation (such as unloading rebound and creep) [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

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Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Yin

Li²,

et al. 2020

Applied Sciences

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Slope deformation monitoring is the prerequisite for disaster risk assessment and engineering control. Terrestrial laser scanning (TLS) is highly applicable to this field. Coarse registration method of point cloud based on scale-invariant feature transform (SIFT) feature points and fine registration method based on the k-dimensional tree (K-D tree) improved iterative closest point (ICP) algorithm were proposed. The results show that they were superior to other algorithms (such as speeded-up robust features (SURF) feature points, Harris feature points, and Levenberg-Marquardt (LM) improved ICP algorithm) when taking the Stanford Bunny as an example, and had high applicability in coarse and fine registration. In order to integrate the advantages of point measurement and surface measurement, an improved point cloud comparison method was proposed and the optimal model parameters were determined through model tests. A case study was conducted on the left side of the K146 + 150 point at S236 Boshan section, Shandong Province, and research results show that from 14 August 2018 and 9 November 2019, the overall deformation of the slope was small with a maximum value of 0.183 m, and the slope will continue to maintain a stable state without special inducing factors such as earthquake, heavy rainfall and artificial excavation.

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Section: Sift Feature Extractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Yin

Li²,

et al. 2020

Applied Sciences

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show abstract

“…Therefore, for the widely distributed red-bed soft rock, an application objective in marine engineering is to solve the problems of softening and disintegrating under seawater conditions. In the past, research on soft rock softening control has mainly focused on soft rock modification experiments [1][2][3][4][5][6][7][8][9][10][11][12][13] and soft rock deformation control methods [14][15][16][17][18][19][20][21][22][23][24]. In general, durability characteristics are tested prior to design in seawater conditions.…”

Section: Introductionmentioning

confidence: 99%

Study on the Softening Mechanism and Control of Red-Bed Soft Rock under Seawater Conditions

Liu

Fan

et al. 2019

JMSE

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Red-bed soft rock easily softens and disintegrates when it comes into contact with water, which is the main factor restricting the application of soft rock as an engineering filler. Therefore, research on the influence of seawater on soft rock softening has great significance for the application of soft rock in marine engineering. To examine the softening mechanism of soft rock under seawater conditions, two kinds of soft rock softening experiments, as well as ion inhibition tests of soft rock softening, were performed under seawater and pure water conditions, and the results were compared. The variation in the soft rock composition, the deformation and failure characteristics of soft rock under the influence of sea water, and the variation in main cations in the softening process of soft rock are examined successively; the influences of different ions on soft rock softening are further analysed. Based on the analyses, the softening mechanism and control method of soft rock under sea water conditions are expounded. The study showed that soft rock softening was inhibited by seawater, which decreased the softening degree of soft rock. The main cations in seawater had an inhibitory effect on soft rock softening, and the order of inhibition was Ca2+ > Mg2+ > Na+. According to the inhibitory effect of ions on soft rock softening, we propose that seawater or calcium salt should be added to reduce the softening of soft rock in soft rock engineering and improve the mechanical strength of soft rock; in addition, soft rock can be considered a raw material in marine engineering. The experimental results have great significance for studies of the disintegration mechanism and inhibitory rules of soft rock under the influence of seawater and provide a theoretical basis for the application of soft rock in marine engineering, such as in artificial reef engineering and coastal dike engineering.

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A rotating smeared crack approach in Sequentially Linear Analysis using the Elastic-brittle fraction model

Bresser

Rots

Hendriks

et al. 2023

Engineering Fracture Mechanics

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Simulating quasi-brittle failures including damage-induced softening based on the mechanism of stress redistribution

Cited by 4 publications

References 28 publications

Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Study on the Softening Mechanism and Control of Red-Bed Soft Rock under Seawater Conditions

A rotating smeared crack approach in Sequentially Linear Analysis using the Elastic-brittle fraction model

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