An isolated similarity design method for shaking table tests on reinforced slopes

Wang, Zhijia; Fan, Gang; Cao, Liang; Chang, Jinyuan

doi:10.1007/s11629-020-6398-3

Cited by 4 publications

(4 citation statements)

References 25 publications

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“…Considering that the uranium tailings dam in the field mainly consists of uranium tailings sand, clay, and overburden soil on the beach surface at the top of the dam, the test was based on BuckingHam's similarity theorem for the construction of indoor uranium tailings dam, and the geometrical dimensions, density, and time were selected as the basic quantities and the theoretical values of the other physical quantities are deduced 33 . The larger and smaller grain sizes of uranium tailings were configured in a ratio of 2.4:1 to form a model material with 14% water content.…”

Section: Methodsmentioning

confidence: 99%

Research on the correlation between surface damage and radon release of uranium tailings dam after seismic based on binocular vision

Liu,

Dai,

Liu

et al. 2024

Preprint

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In order to obtain the surface crack development, displacement information of uranium tailing dam conveniently, and evaluate the interrelationship between surface damage and radon migration changes, this paper constructed an indoor model based and built a binocular camera using smartphones to obtain the model surface image data under the multi-stage simulated seismic loading. Image processing techniques were used to quantify surface cracks and displacements, and radon meters recorded radon release data. The results showed that the surface crack of the model was positively correlated with the loading strength. At 0.9 g, the crack rate reached 3.27%, and the free surface caused by the crack led to multiple traction failures; The maximum displacement of artificial markers on the slope increased steadily from 7.748 mm after 0.3 g to 19.45 mm after 0.7 g, and then surged to 46.52 mm after 0.9 g; The stronger the simulated earthquake intensity, the higher the concentration of radon released by the model. The trend of radon release was consistent with the crack and displacement, but the rate of change was more synchronized with the displacement. The technique is expected to provide an economical and intuitive method for dam engineering and environmental safety evaluation.

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Section: Methodsmentioning

confidence: 99%

Research on the correlation between surface damage and radon release of uranium tailings dam after seismic based on binocular vision

Liu,

Dai,

Liu

et al. 2024

Preprint

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“…According to the different research objects and practical problems to be solved, a variety of methods to determine the similarity relationship are put forward (Lin et al, 2000;Lin and Wang et al, 2006;Li et al, 2020). Based on relevant literature, four common similar design methods in shaking table model tests are summarized and introduced as follows: Wang et al (2021a) and Wang et al (2016) pointed out the shortcomings of the traditional dimensional analysis method in the design of similarity relation of shaking table model test for the interaction of multiple structures: It is not possible to distinguish the importance degree of different parameters of the test, the difference of similar relation design of different structures, or the importance degree of the same physical quantity to different structures of the model. Taking the shaking table test of slope reinforced by anchor cable and lattice beam as an example, the separation similarity design method is proposed.…”

Section: Similarity Relation Design Methodsmentioning

confidence: 99%

Design method of frequency similarity relation for shaking table model test

Guo

Chen²,

Zeng³

2023

Front. Earth Sci.

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It is very important to determine the dynamic similarity relation in the shaking table model test. The accurate dynamic similarity relation can make the model reflect the dynamic characteristics of the prototype to the greatest extent. This paper describes the principle of similarity design for shaking table model test and reviews the related literature. According to the different research objects and purposes, four common similarity design methods including separation similarity method, artificial mass method, less artificial mass method and ignoring gravity method are summarized. Analysis of the shortcomings of the method of deriving frequency compression ratio from static factors in the design of seismic wave similarity relation. The Duhamel integral analytic expression of the structure motion equation under earthquake is analyzed. The seismic response of the structure is closely related to the natural vibration frequency of the structure. A design method using frequency as input seismic wave similarity design control quantity is proposed. The natural vibration frequencies of the prototype and the model are studied by means of the Gonza landslide field ground pulsation test and the model white noise excitation. A new frequency compression ratio design scheme is given from the perspective of dynamic similarity. It is of great reference significance to optimize the dynamic similarity design of shaking table model test and improve the accuracy of test results.

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“…The geometric similarity ratio l C is 15, the elastic modulus similarity ratio C  is 1, and the density similarity ratio E C is 1. The other similarity constants are calculated using the similarity theory [21,22] and the dimensional analysis method, as shown in Table 1.…”

Section: Model Test Similarity Ratiomentioning

confidence: 99%

Study on Mechanical Characteristics of Living Stump and Reinforcement Mechanism of Slope

Jiang,

Liu,

Yang

et al. 2024

Preprint

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As a new plant slope protection technology, living stumps can effectively improve slope stability. The current study attemptes to investigate the mechanical characteristics of the root system of living stumps and their reinforcement mechanism on slopes by carrying out a three-dimensional living stump slope modeling test. Using ABS materials, a 3D model of a living elm stump was created by 3D printing and a slope model test was carried out. The reinforcement mechanism of the living stump was studied through a combination of model testing and numerical simulation. The results indicate that, due to the presence of living stumps in the lower and middle parts of the slope, the maximum shear stress area of the soil moved to a deeper direction. The stress state of the soil around the living stump was effectively improved due to the existence of the lateral root system.Living stumps in the lower part of the slope cross the potential sliding surface and transferred the soil shear stress gradually to the root system through root-soil interaction. Moreover, the tap roots and lateral roots of living stumps form a robust spatial structure that bears the shear stress of soil together, thus increasing the stability of the slope.

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An isolated similarity design method for shaking table tests on reinforced slopes

Cited by 4 publications

References 25 publications

Research on the correlation between surface damage and radon release of uranium tailings dam after seismic based on binocular vision

Research on the correlation between surface damage and radon release of uranium tailings dam after seismic based on binocular vision

Design method of frequency similarity relation for shaking table model test

Study on Mechanical Characteristics of Living Stump and Reinforcement Mechanism of Slope

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