Seismic response of micropiles-reinforced landslide based on shaking table test

Li, Nan; Yu-ming, Men; Yuan, Liqun; Wang, Banqiao; Li, Jun; Liu, Xueling

doi:10.1080/19475705.2019.1664643

Cited by 12 publications

(4 citation statements)

References 18 publications

(17 reference statements)

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“…The structure or model is then subjected to a procedure of shaking at a specified frequency level for a certain period. Shaking tables have gained usage globally, particularly in the simulation of seismic response of various research fields, including geohazards, structural stability, liquefaction analysis and earthquake engineering [123,124]. Thus, shaking tables are often used for dynamic structural studies and might serve as an alternative to centrifuge testing.…”

Section: It Is Noteworthy To Indicate That If the Model Test Is Condu...mentioning

confidence: 99%

“…Various trigger factors such as landslides, earthquakes, slopes made of weak materials, influence of water content variation and stability issues in the mining industry are presented. For example, Men et al [123] determined the dynamic response of a landslide model reinforced with micro-piles and other non-reinforced materials via shaking table testing. The research findings indicate that micropiles make a substantial anti-seismic impact on landslides.…”

Section: Applications Of Physical Model Tests In Slope Stability Studiesmentioning

confidence: 99%

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A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

Haundi,

Okonta

2024

Indian Geotech J

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An extensive evaluation of published articles suggests a lack of research on a systematic literature review relating to physical modelling techniques, developments and application in slope stability studies. However, there is growing interest in using physical model tests in slope stability investigations. The present study systematically reviews the methodologies and applications of physical modelling in slope stability research. The Scopus database was used to identify relevant studies which employed physical model tests in slope stability investigations. A combination of fifteen keywords was used to identify relevant articles. A PRISMA-P method for conducting a systematic review was adopted. Articles were screened and analysed, and extracted data were re-organised using an Excel sheet. Data relating to research objectives, physical model test techniques, instrumentation, scaling laws, numerical modelling, results, and findings were extracted and analysed. The systematic review highlights gaps requiring further studies, particularly in slope reinforcements using vegetation and strength deterioration of reinforcements performance under repeated loading exposures. It is found that scholars have not fully addressed the influence of loss of water on pore water regimes and its impact on stability when vegetation is applied as reinforcements. It is also found that the development of slope materials for soil slopes in physical model tests relies on the artificial development of such materials with minimal consideration of their long-term behaviour. Although other options, such as bio-cementation and desiccation techniques, which simulate the natural environment of the slopes, are neglected in slope material development, the present study recommends that future studies consider such techniques.

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Section: It Is Noteworthy To Indicate That If the Model Test Is Condu...mentioning

confidence: 99%

Section: Applications Of Physical Model Tests In Slope Stability Studiesmentioning

confidence: 99%

A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

Haundi,

Okonta

2024

Indian Geotech J

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“…Gischig et al [ 13 ] obtained that the amplification coefficient of slope frequency is highly sensitive to the change of cracks by using the numerical simulation method. For other retaining structures, such as the pile-anchor structure, micro-pile and so on, the time-frequency domain analysis based on slope acceleration has also become a means of analyzing slope dynamic response [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Seismic Response Evaluation of High-Steep Slopes Supported by Anti-Slide Piles with Different Initial Damage Based on Shaking Table Test

et al. 2022

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In order to study the instability development process of the slope reinforced by anti-slide piles under earthquake conditions, the dynamic response characteristics of the slope are usually taken as the main characteristics, and the model test and numerical simulation are the main research methods. In this paper, a shaking table model test is designed and completed to investigate the influence of anti-slide piles with different initial damage on the failure mode of high and steep slope under earthquake conditions. The changes in velocity, strain and natural frequency during slope vibration are tested in combination with cloud maps when sinusoidal waves of different accelerations with a peak value of 5 Hz are applied. Thus, the differences of slope failure development process and dynamic response characteristics are obtained. The experimental results show that the anti-slide pile with different initial damage has obvious influence on the slope instability process. Under the condition of good anti-slide pile quality, the failure development of the slope behind the pile is limited to soil sliding on top of the slope, slope sliding and overburden sliding; the front slope foot of pile mainly forms shear belt and local sliding. With the decrease in the initial mass of the anti-slide pile, the slope failure develops into topsoil sliding, slope sliding and deep integral sliding; analogously, the failure of the slope in front of the pile develops into a whole slip along the slip belt. The natural frequency cloud map can directly reflect the damage location of the slope, and the frequency change rate is positively correlated with the cumulative shear strain. It shows that the macro-failure characteristics of the model slope change well when the natural frequency is used as the sensitive index to measure the influence of vibration on the model slope. The threshold value of the natural frequency change rate can distinguish different development stages of the slope; 1% is the threshold value of stage II, and 1.5% is the threshold value of stage III.

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“…Therefore, micropiles have been widely used when it is difficult to construct, or the ground environment needs to be preserved, such as slope stabilization, landslide prevention, etc. Li et al investigated the seismic response and dynamic behavior of landslides reinforced with micropiles [6]. Kumar et al analyzed the effect of micropiles on stabilizing slopes [7].…”

Section: Introductionmentioning

confidence: 99%

Development of Expanded Steel Pipe Pile to Enhance Bearing Capacity

Kim

Min³

et al. 2022

Sustainability

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An expanded steel pipe pile increases the cross-sectional area of conventional micropile by expanding the steel pipe to exhibit a higher bearing capacity owing to increased frictional resistance. However, construction cases of the expanded steel pipe pile are insufficient due to the absence of equipment for expanding steel pipes inside the ground. In this study, hydraulic expansion equipment was developed to verify the reinforcing impact on the bearing capacity and field applicability of the expanded steel pipe pile. A series of laboratory and test bed experiments was conducted to measure the expansion time and deformation of carbon steel pipes by using the developed equipment. The results of these experiments demonstrated that the developed equipment has sufficient ability and constructability to be used in the field for constructing expanded steel pipe piles. Then, field load tests were performed by constructing expanded and conventional steel pipe piles to confirm the improved bearing capacity of the expanded steel pipe pile compared to that of the conventional micropile. As a result, the expanded steel pipe pile exhibited a 20.88% increase in bearing capacity compared to that of the conventional steel pipe pile.

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Seismic response of micropiles-reinforced landslide based on shaking table test

Cited by 12 publications

References 18 publications

A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

Seismic Response Evaluation of High-Steep Slopes Supported by Anti-Slide Piles with Different Initial Damage Based on Shaking Table Test

Development of Expanded Steel Pipe Pile to Enhance Bearing Capacity

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