Shaking Table Model Test on Dynamic Response Characteristics and Failure Mechanism of Three Sections Locked Rock Slope

被引：0

作者：

Wang C. ^{[1
]}

Dong J. ^{[1
]}

Liu H. ^{[1
]}

Huang Z. ^{[2
]}

Zhao Y. ^{[1
]}

Yang X. ^{[1
]}

机构：

[1] Research Institute of Geotechnical Engineering and Hydraulic Structure, North China University of Water Resources and Electric Power, Zhengzhou

[2] School of Civil Engineering, Luoyang Institute of Science and Technology, Luoyang

来源：

Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2022年 / 47卷 / 12期

关键词：

dynamic input parameters; dynamic response; failure mode; geotechnical engineering; large-scale shaking table test; three sections locked rock slope;

D O I：

10.3799/dqkx.2022.396

中图分类号：

学科分类号：

摘要：

A three sections locked rock slope model was designed and produced, and a large-scale shaking table test was carried out to analyze the dynamic response and deformation failure mode of the three sections locked rock slope under earthquake action. The research results show that the natural vibration frequency of the three sections locked slope model decreases gradually with the increase of vibration times, and the damping ratio increases gradually with the increase of vibration times; the horizontal acceleration amplification factor of the slope model shows obvious elevation amplification effect and surface effect. Under the action of different types of input waves, there are obvious differences in the slope acceleration response: the acceleration amplification coefficient increases first and then decreases with the increase of input wave frequency, and the peak acceleration amplification coefficient reaches the maximum value when the frequency is 15 Hz. With the increase of the amplitude of the input wave, the acceleration amplification coefficient of the slope increases first and then decreases. Under the action of seismic wave, multiple cracks appear in the locking section between the crack at the top of the slope and the weak interlayer at the bottom, and continue to develop in an X-shaped connection. Finally, a 3-level slip surface is formed in the slope, and the slope slides along the 3-level slip surface under the action of continuous vibration. © 2022 China University of Geosciences. All rights reserved.

引用

页码：4428 / 4441

页数：13

共 38 条

[1] Cao P., Li Y.S., Li Z.L., Et al., Geological Structure Characteristics and Genetic Mechanism of Baige Landslide Slope in Changdu, Tibet, Earth Science, 46, 9, pp. 3397-3409, (2021)
[2] Chen H.R., Qin S.Q., Xue L., Et al., A Physical Model Predicting Instability of Rock Slopes with Locked Segments along a Potential Slip Surface, Engineering Geology, 242, pp. 34-43, (2018)
[3] Chen H. R., Qin S. Q., Xue L., Et al., Modes of Mechanical Action between Locked Segments, Journal of Engineering Geology, 27, 1, pp. 1-13, (2019)
[4] Chen H.R., Qin S.Q., Xue L., Et al., Why the Xintan Landslide was not Triggered by the Heaviest Historical Rainfall: Mechanism and Review, Engineering Geology, 294, (2021)
[5] Chen Z.L., Hu X., Xu Q., Experimental Study of Motion Characteristics of Rock Slopes with Weak Intercala-tion under Seismic Excitation, Journal of Mountain Science, 13, 3, pp. 546-556, (2016)
[6] Deng Z.Y., Liu X.R., Liu Y.Q., Et al., Model Test and Numerical Simulation on the Dynamic Stability of the Bedding Rock Slope under Frequent Microseisms, Earthquake Engineering and Engineering Vibration, 19, 4, pp. 919-935, (2020)
[7] Dong J.Y., Wang C., Huang Z.Q., Et al., Dynamic Response Characteristics and Instability Criteria of a Slope with a Middle Locked Segment, Soil Dynamics and Earthquake Engineering, 150, (2021)
[8] Dong J.Y., Wang C., Huang Z.Q., Et al., Shaking Table Model Test to Determine Dynamic Response Characteristics and Failure Modes of Steep Bedding Rock Slope, Rock Mechanics and Rock Engineering, 55, 6, pp. 3645-3658, (2022)
[9] Dong J.Y., Yang G.X., Wu F.Q., Et al., The Large-Scale Shaking Table Test Study of Dynamic Response and Failure Mode of Bedding Rock Slope under Earthquake, Rock and Soil Mechanics, 32, 10, pp. 2977-2982, (2011)
[10] Dong J.Y., Yang J.H., Wu F.Q., Et al., Large-Scale Shaking Table Test Research on Acceleration Response Rules of Bedding Layered Rock Slope and Its Blocking Mechanism of River, Chinese Journal of Rock Mechanics and Engineering, 32, pp. 3861-3867, (2013)

← 1 2 3 4 →