Centrifuge model test and numerical interpretation of seismic responses of a partially submerged deposit slope

被引:0
作者
Zhiliang Sun [1 ,2 ]
Lingwei Kong [1 ,2 ]
Aiguo Guo [1 ,2 ]
Mohammad Alam [1 ,2 ]
机构
[1] State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences
[2] University of Chinese Academy of Sciences
关键词
Centrifuge model test; Acceleration responses; Excess pore pressure; Deposit slope;
D O I
暂无
中图分类号
TU43 [土力学];
学科分类号
0801 ; 080104 ; 0815 ;
摘要
Partially submerged deposit slopes are o ften encountered in practical engineering applications.Howeve r,studies on evaluating their stability under seismic loading are still rare.In order to understand the seismic behavior of partially submerged deposit slopes,centrifuge shaking table model tests(50 g) were employed.The responses of horizontal accelerations,accumulated excess pore pressures,deformation mode,and failure mode of the partially submerged deposit slope model were analyzed.In dynamic centrifuge model tests,EQ5 shaking event was applied numerically.The results indicated that in the saturated zone of the deposit slope,liquefaction did not occur,and the measured horizontal accelerations near the water table were amplified as a layer-magnification effect.It was also shown that the liquefaction-resistance of the deposit slope increased under multiple sequential ground motions,and the deformation depth of the deposit slope induced by earthquake increased gradually with increasing dynamic Ioad amplitude.Except for the excessive crest settlement generated by strong shaking,an additional vertical permanent displacement was initiated at the slope crest due to the dissipation of excess pore pressure under seismic loading.The result of particle image velocimetry(PIV) analysis showed that an obvious internal arc-slip was generated around the water table of the partially submerged deposit slope under seismic loading.
引用
收藏
页码:381 / 394
页数:14
相关论文
共 31 条
[1]  
Seismic performances of dyke on liquefiable soils[J]. Mingwu Wang,Guangyi Chen,Susumu Iai.Journal of Rock Mechanics and Geotechnical Engineering. 2013(04)
[2]  
Examining dynamic soil pressures and the effectiveness of different pile structures inside reinforced slopes using shaking table tests[J] . Ning Ma,Honggang Wu,Huimin Ma,Xiyong Wu,Gonghui Wang.Soil Dynamics and Earthquake Engineering . 2019
[3]  
Zhejiang University benchmark centrifuge test for LEAP-GWU-2015 and liquefaction responses of a sloping ground[J] . Yan-Guo Zhou,Zheng-Bo Sun,Yun-Min Chen.Soil Dynamics and Earthquake Engineering . 2018
[4]  
Liquefaction-induced settlement and tilting of buildings with shallow foundations based on field and laboratory observation[J] . Kohji Tokimatsu,Kazuya Hino,Hiroko Suzuki,Kyoko Ohno,Shuji Tamura,Yasutsugu Suzuki.Soil Dynamics and Earthquake Engineering . 2018
[5]   Deformation and failure of the Xiaochatou Landslide under rapid drawdown of the reservoir water level based on centrifuge tests [J].
Fan, Lei ;
Zhang, Guangcheng ;
Li, Bo ;
Tang, Huiming .
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2017, 76 (03) :891-900
[6]   Seismic performance of loess-mudstone slope by centrifuge tests [J].
Zhang, Zelin ;
Wang, Tao ;
Wu, Shuren ;
Tang, Huiming ;
Liang, Changyu .
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2017, 76 (02) :671-679
[7]  
Safety Assessment of Antiliquefaction Performance of a Constructed Reservoir Embankment. I: Experimental Assessment[J] . Y. Huang,C. Q. Zhu.Journal of Performance of Constructed Facilities . 2016
[8]  
Analysis of the effect of groundwater level on the seismic behavior of an unsaturated embankment on clayey ground[J] . Takahiro Yoshikawa,Toshihiro Noda,Takeshi Kodaka,Toshihiro Takaine.Soil Dynamics and Earthquake Engineering . 2016
[9]  
Centrifuge Modeling of the Seismic Performance of Pile-Reinforced Slopes[J] . A. H. Al-Defae,J. A. Knappett.Journal of Geotechnical and Geoenvironmental Engineering . 2014
[10]  
Liquefaction induced strength loss and deformation: simulation and design[J] . Ross W. Boulanger,Ronnie Kamai,Katerina Ziotopoulou.Bulletin of Earthquake Engineering . 2014 (3)