Shaking table test of comparison and optimization of seismic performance of slope reinforcement with multi-anchor piles

Pai, Lifang; Wu, Honggang

doi:10.1016/j.soildyn.2021.106737

Cited by 23 publications

(6 citation statements)

References 34 publications

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“…Unlike traditional single piles, the pile body has been settled using an anchor cable. Settling the anchor cable creates a situation that differs from the traditional situation, in which anti-slide piles bear force passively (Pai and Wu, 2021). As a result, the pile body's internal force and deformation state are optimized (Xu et al, 2022).…”

Section: Anchor Anti-slide Pilementioning

confidence: 99%

Anti-slide pile structure development: New design concept and novel structure

et al. 2023

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The anti-slide pile is one of the most used measures in landslide control globally. Following its application, various structures have been developed. In this paper, we analyze the anti-slide pile structure development process and extract two development paths. One path is aimed at improving the applicability. The second path starts from an in-depth study of pile–soil interactions. However, these two paths share a single design concept: The anti-slide pile provides direct resistance to maintain landslide stability, that is, the anti-slide pile and the landslide body are thought to be confrontational sides. We here propose developing and utilizing the landslide body in anti-slide pile design. Accordingly, the confrontation relationship between the anti-slide pile and the landslide body can be changed while shifting away from the view that the landslide body is only a hazard. On this basis, we also design a novel structure: An arm-stretching-type anti-slide pile. The simulation verification results show that this novel structure works well in realizing the proposed design concept. Compared with the commonly used wholly buried pile, the safety factor of the landslide controlled by the novel structure is improved by 43.56%. This study promotes the design concept of anti-slide pile developing from the existing slide–resist single mode to the slide–self-stabilize–resist compound mode.

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Section: Anchor Anti-slide Pilementioning

confidence: 99%

Anti-slide pile structure development: New design concept and novel structure

et al. 2023

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“…It may be one of the more possible strategies to add shock absorption materials to high-risk areas with abnormal acceleration amplification. Some 1-g shaker test results suggest that additional shock-absorbing material is a possible treatment (Ma et al, 2019;Pai and Wu, 2021). This can not only eliminate the occurrence of unknown factors to a certain extent but also reduce economic waste.…”

Section: Simplified Spelling Meaningmentioning

confidence: 99%

Influence of Slope Amplification on the Pile Dynamic Behavior Based on the Data Mining Method

et al. 2022

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In this article, a centrifuge shaking table model test of anchored stabilizing piles for strengthening landslides was established, and the dynamic response characteristics of the pile–anchor–slope under earthquake action were analyzed. On this basis, combined with the fuzzy gray relational analysis and the rank-sum ratio method, the correlation between the amplification of the acceleration response of the heterogenous slope and the dynamic response of the support structure was explored. Based on the obtained results, relevant suggestions for engineering design were proposed. The results showed that the seismic amplification of the complex soil–rock slope reinforced by the pile–anchor structure was not uniform and the amplification coefficient had strong variability. Among them, the amplification coefficient of the slope, dynamic earth pressure, and dynamic bending moment of the pile near the connection of the pile–anchor cable continued to increase; the correlation between the seismic amplification and the seismic behavior of the pile–anchor structure is different at different positions of the slope. The measurement points with a higher comprehensive ranking of correlation are mainly concentrated in the pile–anchor connection, the middle of the slope, and the high-angle soil–rock interface. It is related to the geometric characteristics of the model and the high seismic amplification of the slope; for the pile–anchor connection part and the high-angle soil–rock structure surface of the slope, the shock absorption measures and grouting strength of the anchor cable’s anchoring section should be considered in the engineering design.

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“…The shaking table system comprises a 64-channel dynamic data acquisition system, which can achieve horizontal and vertical bidirectional vibration input. The main technical parameters are shown in Table 1 (Pai and Wu, 2021).…”

Section: Experimental Set-upsmentioning

confidence: 99%

Shaking table test of acceleration response of surrounding rock of the 3D cross tunnel under earthquake

Pai

Lei

2021

Journal of Vibration and Control

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Taking the 3D cross-engineering of Caomeigou No.1 Tunnel and Pandaoling Tunnel as an example, a shaking table test was carried out to study the effect of tunnel spatial position on seismic wave propagation characteristics and acceleration response of surrounding rock under earthquake seismic excitation. Based on the influence of the spatial position of the tunnel, the characteristic form of the surrounding rock between the cross section and non-cross section is divided, and the accelerometer layout scheme is designed. Based on statistical probability, the ratio of peak ground velocity to peak ground acceleration (PGA) was introduced to quantitatively characterize the characteristics of seismic wave propagation spectrum. Furthermore, the SPECTR calculation was used to obtain the regional difference in the seismic wave propagation potential damage potential displacement parameter ( P d). Under the influence of the spatial location of the 3D cross tunnel, the peak acceleration and motion duration of the seismic wave are mainly reflected in the variation of the section along the elevation direction. Low-frequency (≤20 Hz) seismic waves have a greater impact on the tunnel structure, and peak ground velocity/peak ground acceleration ratio has a positive correlation with the peak input energy of ground motion. The ultra-small net-spacing cross tunnel has a spatially distributed coupling deformation effect. The crown of the upper-span tunnel is highly sensitive to earthquakes and becomes a weak link in seismic design. These results help us provide a theoretical basis for the seismic design of the cross-tunnel.

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Shaking table test of comparison and optimization of seismic performance of slope reinforcement with multi-anchor piles

Cited by 23 publications

References 34 publications

Anti-slide pile structure development: New design concept and novel structure

Anti-slide pile structure development: New design concept and novel structure

Influence of Slope Amplification on the Pile Dynamic Behavior Based on the Data Mining Method

Shaking table test of acceleration response of surrounding rock of the 3D cross tunnel under earthquake

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