Multidirectional shaking table tests on model piles in saturated sand

2010 ◽  
pp. 1469-1474 ◽  
Keyword(s):  
Shaking Table ◽  
Saturated Sand ◽  
Shaking Table Tests

scholarly journals Examining the seismic behaviour of partially saturated sand using centrifuge shaking table tests

2019 ◽  
Vol 92 ◽  
pp. 17002
Author(s):  
Zitao Zhang ◽  
Jianzhang Xiao ◽  
Yingqi Wei ◽  
Hong Cai ◽  
Jianhui Liang ◽  
...  
Keyword(s):  
Effective Stress ◽  
Experimental Results ◽  
Shaking Table ◽  
Degree Of Saturation ◽  
Saturated Sand ◽  
Shaking Table Tests ◽  
Seismic Behaviour ◽  
Liquefaction Resistance ◽  
Partially Saturated ◽  
Partially Saturated Sand

Similar to fully saturated sand, the partially saturated sand can also liquefy under certain conditions during earthquakes. This study aims to characterize the seismic behaviour of partially saturated sand. Centrifuge shaking table tests were performed using the IWHR horizontal-vertical centrifuge shaker. The experimental results indicate that the liquefaction resistance of the partially saturated sand increases with decreasing the degree of saturation and with increasing the initial effective stress right before shaking. The boundary between the liquefied and un-liquefied sand becomes deeper and deeper during shaking.

scholarly journals Compaction and Liquefaction of a Sandy Layer: Simulation of Shaking Table Experiments

2013 ◽  
Vol 59 (4) ◽  
pp. 509-521 ◽  
Author(s):  
A. Sawicki ◽  
W. Świdziński
Keyword(s):  
Experimental Data ◽  
Numerical Simulations ◽  
Shaking Table ◽  
Sand Layer ◽  
Saturated Sand ◽  
Shaking Table Tests ◽  
Horizontal Acceleration ◽  
Sandy Layer ◽  
Dry Sand ◽  
Model C

AbstractThis paper presents numerical simulations of the behavior of a sandy layer subjected to a cyclic horizontal acceleration in shaking table tests, with a particular attention focused on the settlements of a dry sand layer, and on the liquefaction of saturated sand. A compaction/liquefaction model (C/L) is applied to these simulations. The influence of specific parameters of the model on the compaction and liquefaction of a sandy layer is shown and discussed. The results of simulations are compared with selected experimental data.

scholarly journals Impacts of Fixed-End and Flexible Boundary Conditions on Seismic Response of Shallow Foundations on Saturated Sand in 1-g Shaking Table Tests

2021 ◽  
Vol 44 (6) ◽  
pp. 20200018
Author(s):  
Y. Jafarian ◽  
P. Esmaeilpour ◽  
S. Shojaeemehr ◽  
H. Taghavizade ◽  
S. Rouhi ◽  
...  
Keyword(s):  
Boundary Conditions ◽  
Seismic Response ◽  
Shallow Foundations ◽  
Shaking Table ◽  
Saturated Sand ◽  
Shaking Table Tests ◽  
Fixed End

scholarly journals Shaking-Table Tests for Immersed Tunnels at Different Sites

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Xinjun Cheng ◽  
Liping Jing ◽  
Jie Cui ◽  
Yongqiang Li ◽  
Rui Dong
Keyword(s):  
Seismic Waves ◽  
Water Layer ◽  
Shaking Table ◽  
Dynamic Responses ◽  
Saturated Sand ◽  
Shaking Table Tests ◽  
Seismic Responses ◽  
Overlying Water ◽  
Immersed Tunnel ◽  
Soil Deposits

Immersed tunnels are typically built in areas subjected to ground motion. Therefore, an evaluation of the seismic performance of the soil-tunnel system is essential. A series of shaking-table tests was conducted to study the influences of the site soil and overlying water layer on the seismic responses of soil deposits and an immersed tunnel. Detailed information on the experiment setup is provided with special focus on the similitude relationship, fabrication of the model system, measurement setup, and loading procedures for a simulation of the seismic waves. Three groups of tests at different sites in dry sand, saturated sand, and saturated sand with an overlying water layer were carried out using the same seismic excitations. The seismic responses of the soil deposits and the dynamic responses of the tunnel model were obtained. The experiment results indicate that, when considering only horizontal earthquake excitations, soil liquefaction significantly influences the propagation of seismic waves and the dynamic responses of the tunnel, whereas the water layer has no obvious effects on the dynamic performance of the ground or tunnel. Furthermore, the acceleration responses of the tunnel elements were analyzed qualitatively, and the joints are deemed important elements in an antiseismic immersed tunnel design.

scholarly journals Effect of Pavement Thickness and Width on Liquefaction-Induced Settlements and the Contribution of Sand Ejecta in Total Settlement

2021 ◽  
Author(s):  
Muhammad Mohsan ◽  
Takashi Kiyota ◽  
Muhammad Umar ◽  
Toshihiko Katagiri
Keyword(s):  
Soil Liquefaction ◽  
Shaking Table ◽  
Saturated Sand ◽  
Shaking Table Tests ◽  
Factors Affecting ◽  
Maximum Contribution ◽  
Total Settlement ◽  
Laminar Box ◽  
Pavement Thickness

AbstractThis paper investigates the settlement in a pavement due to soil liquefaction. Four 1-g shaking table tests were performed on saturated sand bed-pavement model to understand the factors affecting the liquefaction-induced settlements and their relation to the pavement thickness and width. All the tests were performed with a base acceleration of 320 gal in a laminar box. The shaking table tests revealed that the total settlement reduced with the increase in the pavement thickness. The pavement with the same thickness but different width showed that the total settlement reduced with the increase in the pavement width. The co-seismic settlement and post-seismic settlement depend upon the thickness and width of the pavement, and the maximum contribution of the sand ejecta is around 7.7% in the total settlement.

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