Liquefaction potential evaluation for subsurface soil layers of Delhi region

2016 ◽  
Vol 88 (2) ◽  
pp. 147-150 ◽  
Author(s):  
L. Thoithoi ◽  
C. S. Dubey ◽  
P. S. Ningthoujam ◽  
D. P. Shukla ◽  
R. P. Singh ◽  
...  
Keyword(s):  
Liquefaction Potential ◽  
Soil Layers ◽  
Subsurface Soil ◽  
Potential Evaluation

Study on Boundary Depth and Critical Shear Wave Velocity of Saturated Loess Foundation Liquefaction in Different Regions

2013 ◽  
Vol 275-277 ◽  
pp. 363-370
Author(s):  
Ping Wang ◽  
Zhi Jian Wu ◽  
Qian Wang ◽  
Jun Wang
Keyword(s):  
Shear Wave ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Evaluation Method ◽  
Test Results ◽  
Liquefaction Potential ◽  
Soil Layers ◽  
Dynamic Triaxial Test ◽  
Potential Evaluation ◽  
Loess Region

Use of Seed’s simplified liquefaction evaluation method, combined with the dynamic triaxial test results, and the wave velocity of site liquefaction, to evaluate liquefaction potential of the four typical loess sites under the action of different seismic magnitudes, and calculate the boundary depth of the liquefaction site. Moreover, give the corresponding relationship between the typical loess site liquefaction boundary depth and shear wave velocity, and get the critical shear wave velocity of typical loess liquefaction site. The results of the study show that, (1) saturated loess site could be liquefied under the action of a certain intensity earthquake. (2) saturated soil layers which do not produce liquefied under the action of 6.5 degree earthquake, its critical shear wave velocity is about 227 m/s, and under the action of 7 degree earthquake its critical shear wave velocity is about 303 m/s, under the action of 8 degree earthquake its critical shear wave velocity is about 379 m/s. This conclusion enriches and develops the basis of liquefaction potential evaluation in the loess region.

scholarly journals Standard Penetration Tests and Soil Liquefaction Potential Evaluation

1980 ◽  
Vol 20 (4) ◽  
pp. 95-111 ◽  
Author(s):  
Fumio Tatsuoka ◽  
Toshio Iwasaki ◽  
Ken-Ichi Tokida ◽  
Susumu Yasuda ◽  
Makoto Hirose ◽  
...  
Keyword(s):  
Soil Liquefaction ◽  
Liquefaction Potential ◽  
Potential Evaluation ◽  
Penetration Tests

scholarly journals Flow liquefaction potential of loose sand: stress path envelope and energy–based evaluation

2020 ◽  
Author(s):  
Kun Pan ◽  
Zhongxuan Yang ◽  
Yuanqiang Cai
Keyword(s):  
Axial Strain ◽  
Stress Path ◽  
Dissipated Energy ◽  
Loose Sand ◽  
Liquefaction Potential ◽  
Cyclic Shear ◽  
Cyclic Resistance ◽  
Potential Applicability ◽  
Potential Evaluation ◽  
Flow Liquefaction

Flow liquefaction, which is characterized by sudden collapse following the unstable behavior of saturated loose sand, may lead to the most catastrophic consequence of all liquefaction–related phenomena. This note presents a systematic experimental investigation into the flow liquefaction potential of sand under various initial and cyclic shear conditions. The cyclic flow liquefaction responses are compared to the monotonic shear results under an identical initial testing condition. It is found that the effective stress path of a monotonic test appears to envelop that of its corresponding cyclic test. The energy–based liquefaction potential evaluation indicates that the accumulative dissipated energy is uniquely correlated not only with the pore pressure and axial strain induced in sand, but also with the degraded stiffness during cyclic loading. Furthermore, the energy capacity for triggering the flow liquefaction appears to be intimately related to the cyclic resistance of sand; this signifies the potential applicability of energy–based liquefaction potential evaluation using strength data available in conventional analysis.

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