Evaluation of dynamic response of connected and non-connected piled raft systems using shaking table tests

2020 ◽  
Vol 139 ◽  
pp. 106366
Author(s):  
Alireza Saeedi Azizkandi ◽  
Milad Aghamolaei ◽  
Sajjad Heidari Hasanaklou
Keyword(s):  
Dynamic Response ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Piled Raft

scholarly journals Shaking Table Tests for Seismic Response of Orthogonal Overlapped Tunnel under Horizontal Seismic Loading

2021 ◽  
Vol 2021 ◽  
pp. 1-19
Author(s):  
Honggang Wu ◽  
Hao Lei ◽  
Tianwen Lai
Keyword(s):  
Dynamic Response ◽  
Seismic Response ◽  
Seismic Wave ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Acceleration Response ◽  
Test Device ◽  
Deformation Stages ◽  
Superposition Effect

This paper presents the seismic dynamic response and spectrum characteristics of an orthogonal overlapped tunnel by shaking table tests. First, a prototype of the engineering and shaking table test device, which was used to design details of the experiment, was developed. Then, the sensors used in the test were selected, and the measurement points were arranged. Subsequently, the Wenchuan seismic wave with horizontal direction in different peak ground accelerations was inputted into the model, followed by a short analysis of the seismic response of the overlapped tunnel in the shaking table test as well as the distribution of the peak acceleration. Throughout the studies, the model exhibited obvious deformation stages during the seismic wave loading process, which can be divided into elastic, plastic, plastic enhancement, and failure stage. In particular, the time- and frequency-domain characteristics of the key parts of the tunnel were discussed in detail by using the continuous wavelet transform (CWT) based on the Morlet wavelet as the basis function. We found that the acceleration response was more intense within 25–60 s after the seismic wave was inputted. Furthermore, owing to “the superposition effect,” the seismic response at the crown of the under-crossing tunnel was stronger than that at the invert of the upper-span tunnel. The low and medium frequencies in the transformation of small scales (5–20) significantly affected the overlapped tunnel. These results elucidate the seismic dynamic response of the overlapped tunnel and provide guidance for the design of stabilizing structures for reinforcing tunnels against earthquakes.

scholarly journals Shaking table tests for dynamic response of a wharf with coupled batter piles.

2001 ◽  
pp. 101-113 ◽  
Author(s):  
Junji HAMADA ◽  
Takahiro SUGANO ◽  
Tatsuo UWABE ◽  
Shigeru UEDA ◽  
Hiroshi YOKOTA
Keyword(s):  
Dynamic Response ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Batter Piles

Dynamic response of a physical anti-dip rock slope model revealed by shaking table tests

2020 ◽  
Vol 277 ◽  
pp. 105772
Author(s):  
Chi-Chieh Chen ◽  
Hung-Hui Li ◽  
Ya-Chu Chiu ◽  
Ying-Kuan Tsai
Keyword(s):  
Dynamic Response ◽  
Rock Slope ◽  
Shaking Table ◽  
Shaking Table Tests

Geotechnical Seismic Isolation System - Further Experimental Study

2014 ◽  
Vol 580-583 ◽  
pp. 1490-1493 ◽  
Author(s):  
Wei Xiong ◽  
Ming Ren Yan ◽  
Yao Zhuang Li
Keyword(s):  
Experimental Study ◽  
Dynamic Response ◽  
Parametric Study ◽  
Seismic Isolation ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Seismic Acceleration ◽  
Isolation System ◽  
Isolation Performance

The isolation effectiveness of the Geotechnical Seismic Isolation (GSI) system was further investigated via a series of prescribed shaking-table tests. The dynamic response of GSI system was also evaluated in detail of this work. A parametric study for assessment of the isolation performance of GSI was conducted by varying experimental key parameters, such as rubber percentage of rubber-sand mixtures (RSM), configuration of the foundation, storey number of the superstructure, and different kinds of seismic acceleration inputs. From the parametric survey, it can be concluded that the GSI system can to some extent attenuate the dynamic response of the superstructure under big earthquake shakings.

Dynamic response of a dip slope with multi-slip planes revealed by shaking table tests

Landslides ◽  
2018 ◽  
Vol 15 (9) ◽  
pp. 1731-1743 ◽  
Author(s):  
Hung-Hui Li ◽  
Cheng-Han Lin ◽  
Wei Zu ◽  
Chi-Chieh Chen ◽  
Meng-Chia Weng
Keyword(s):  
Dynamic Response ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Slip Planes ◽  
Dip Slope

scholarly journals Dynamic Response of Parallel Overlapped Tunnel under Seismic Loading by Shaking Table Tests

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Tao Yang ◽  
Yunkang Rao ◽  
Honggang Wu ◽  
Junyun Zhang ◽  
Hao Lei ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Wavelet Packet ◽  
Failure Process ◽  
Side Wall ◽  
Shaking Table ◽  
Dynamic Responses ◽  
Dynamic Strain ◽  
Shaking Table Tests ◽  
Failure Characteristics ◽  
The Right

Potential earthquake-induced damage to overlapped tunnels probably occurs during the operation and maintenance of mountain tunnel engineering, especially in the seismically active zone. This study investigated the dynamic response and the failure characteristics of the parallel overlapped tunnel under seismic loadings by employing shaking table tests. The failure mode of the parallel overlapped tunnels was analyzed through macroscopic test phenomena. The dynamic responses of the surrounding rock and tunnel lining were evaluated by acceleration and dynamic strain, respectively. In particular, wavelet packets were used to investigate the spectrum characteristics of the tunnel structure in depth. The failure process of the model can be divided into three stages. The upper-span and the under-crossing tunnels showed different failure characteristics. Additionally, the lining damage on the outer surface of the tunnel mainly occurred on the right side arch waist and the left side wall, whereas the lining damage on the inner surface of the tunnel mainly appeared on the crown and invert. Wavelet packet energy results showed that the energy characteristic distributions of the upper-span and the under-crossing tunnels were not consistent. Specifically, the energy eigenvalues of the crown of the upper-span tunnel and the invert of the under-crossing tunnel were the largest, which should be considered to be the weak parts in the seismic design.

Dynamic response characteristics of a tailing dam determined by shaking-table tests

2020 ◽  
Vol 13 (18) ◽  
Author(s):  
Jiaxu Jin ◽  
Qianshen Ding ◽  
Hongzhi Cui ◽  
Pingyi Zhang ◽  
Xiaochun Xiao ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Response Characteristics ◽  
Tailing Dam ◽  
Dynamic Response Characteristics
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