Contraction and pore pressure behavior of a silty sand deposit subjected to an extended shaking history

El-Sekelly, Waleed; Mercado, Vicente; Abdoun, Tarek; Dobry, Ricardo; Sepúlveda, Alejandro

doi:10.1016/j.soildyn.2018.07.023

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…Contrarily, samples that reached initial liquefaction and considerable accumulated axial strains such as 𝜀 1 = {7.5, 10}% (with 𝑟 𝑢 = 1) drastically reduced its liquefaction resistance. The aforementioned results are in agreement with former experiments using centrifuge tests [27,[27][28][29][30]73]. The results in the stress-strain space show a reduction in the axial strain accumulation during cyclic mobility on tests with undrained cyclic preloadings (i.e.…”

Section: Undrained Cyclic Triaxial Tests With Undrained Cyclic Triaxi...supporting

confidence: 92%

On the influence of cyclic preloadings on the liquefaction resistance of sands: A numerical study

Duque

Tafili

Maš́ın

2023

Soil Dynamics and Earthquake Engineering

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Section: Undrained Cyclic Triaxial Tests With Undrained Cyclic Triaxi...supporting

confidence: 92%

On the influence of cyclic preloadings on the liquefaction resistance of sands: A numerical study

Duque

Tafili

Maš́ın

2023

Soil Dynamics and Earthquake Engineering

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“…Wang et al [17] founded that the reconsolidation process after liquefaction of tailings will improve its liquefaction resistance, and proposed that the relationship between the ratio of the cycle number of liquefaction after reconsolidation to the cycle number of first liquefaction and the reconsolidation degree. El-Sekelly et al and El-Sekelly [18,19] also found that the previous earthquake history has a significant effect on changing the liquefaction resistance of sandy sediments. His centrifuge experiment results showed that most historical earthquakes can improve the liquefaction resistance of sandy soils, but some larger earthquakes reduce it completely or partially.…”

Section: Introductionmentioning

confidence: 97%

Liquefaction and Reliquefaction Characteristics of Aeolian Sand Foundation Reinforced by Precast Cement Piles Based on Shaking Table Test

Zhao-rong¹,

Zhou

Han³

et al. 2022

Geofluids

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With the continuous development of traffic construction, road engineering inevitably crosses the aeolian sand river valley area. Compared with general sandy soil and silty soil, cohesionless aeolian sand foundation has similar properties with fluid and higher liquefaction potential. Precast cement pile can greatly improve the vertical bearing capacity of foundation, but this paper finds that it also has antiliquefaction effect when it is used to reinforce aeolian sand foundation. In addition, there may be more than one liquefaction of aeolian sand foundation in areas with frequent earthquakes. Therefore, this paper explores the liquefaction and reliquefaction characteristics of aeolian sand foundation reinforced by precast cement piles through shaking table test. The test results show that under the excitation of 0.4 g EL Centro wave: (1) the increase of pore pressure in aeolian sand foundation will have multiple instantaneous peaks, which will promote the surface to float or sink. The phenomenon will be weakened by multiple earthquakes or pile reinforcement. (2) The prefabricated cement pile can improve the liquefaction and reliquefaction resistance of aeolian sand foundation. The effect is the best in the shallow layer of the foundation, which is increased by more than 30%, and the deeper the buried depth, the lower the effect. (3) The antiliquefaction ability of foundation will be improved after strong earthquake, but the dynamic response will be significantly increased in the next earthquake. (4) When the aeolian sand foundation reinforced by precast cement piles is reliquefied, the main frequency of the foundation will migrate to low frequency. The liquefied layer will inhibit the low frequency (2 ~ 15 Hz) energy transfer and promote the high frequency (25~30 Hz) energy transfer. The results provide reference for antiliquefaction design of aeolian sand foundation and improve the application of precast cement pile in liquefied foundation.

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Experimental study on deformation of a sandy field liquefied by blasting

Zhang

Chen

et al. 2019

Soil Dynamics and Earthquake Engineering

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Contraction and pore pressure behavior of a silty sand deposit subjected to an extended shaking history

Cited by 4 publications

References 30 publications

On the influence of cyclic preloadings on the liquefaction resistance of sands: A numerical study

On the influence of cyclic preloadings on the liquefaction resistance of sands: A numerical study

Liquefaction and Reliquefaction Characteristics of Aeolian Sand Foundation Reinforced by Precast Cement Piles Based on Shaking Table Test

Experimental study on deformation of a sandy field liquefied by blasting

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