隧道口顺层斜坡地震动力响应特征振动台试验

陈志荣; 宋丹青; 刘晓丽; 王诚文; 张建伟

doi:10.3799/dqkx.2021.300

Volume 47 Issue 6

Jun. 2022

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Chen Zhirong, Song Danqing, Liu Xiaoli, Wang Chengwen, Zhang Jianwei, 2022. Seismic Dynamic Response Characteristics of a Layered Slope at Tunnel Entrance Using Shaking Table Test. Earth Science, 47(6): 2069-2080. doi: 10.3799/dqkx.2021.300

Citation:

Chen Zhirong, Song Danqing, Liu Xiaoli, Wang Chengwen, Zhang Jianwei, 2022. Seismic Dynamic Response Characteristics of a Layered Slope at Tunnel Entrance Using Shaking Table Test. Earth Science, 47(6): 2069-2080. doi: 10.3799/dqkx.2021.300

Citation:

Chen Zhirong, Song Danqing, Liu Xiaoli, Wang Chengwen, Zhang Jianwei, 2022. Seismic Dynamic Response Characteristics of a Layered Slope at Tunnel Entrance Using Shaking Table Test. Earth Science, 47(6): 2069-2080. doi: 10.3799/dqkx.2021.300

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Seismic Dynamic Response Characteristics of a Layered Slope at Tunnel Entrance Using Shaking Table Test

doi: 10.3799/dqkx.2021.300

1.
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
2.
State Key Laboratory of Hydroscience and Hydropower Engineering, Tsinghua University, Beijing 100091, China
3.
School of Civil Engineering and Architecture, Henan University, Kaifeng 475001, China

Received Date: 2021-09-09
Publish Date: 2022-06-25

Abstract

Abstract

To study the dynamic response characteristics and dynamic failure modes of the bedding slope at the tunnel entrance under earthquakes, a shaking table scaled model test of the bedding slope at the tunnel entrance was designed based on the similarity relationship of the dynamic model tests. The experimental results show that the model slope has typical topographic amplification effect under seismic action. The model slope has obvious dynamic amplification effect of slope surface, and the dynamic amplification effect on the slope surface is larger than that in the slope under the same conditions. The input direction and strength of ground motion have influence on the dynamic response characteristics of the model slope. Compared with the input of vertical ground motion, the dynamic amplification effect of the model slope is larger when the input of horizontal ground motion under the same conditions. The tunnel structure changes the local dynamic response characteristics of the model slope and has a magnifying effect on the dynamic amplification effect of the slope. The dynamic failure mode of the model slope under earthquake action is as follows: earthquake induced-slip zone gradually formed on the topmost structural plane-slip failure above the topmost structural plane-slip body accumulation at the foot of slope.
- tunnel entrance section,
- layered slope,
- dynamic response characteristics,
- earthquake,
- shaking table test,
- geotechnical engineering

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References(63)

References

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Seismic Dynamic Response Characteristics of a Layered Slope at Tunnel Entrance Using Shaking Table Test

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