Effects of Initial Shear Stress and Vibration Frequency on the Dynamic Pore-Water Pressure of Saturated Sands

Zhang, Jian; Cao, Jiuting; Huang, Sijie

doi:10.1155/2018/6124809

Cited by 4 publications

(5 citation statements)

References 19 publications

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“…e specific test plan is shown in Table 2. In order to consider the influence of initial shear stress on the dynamic characteristics of saturated sands, the dynamic triaxial tests of consolidation ratio K c � 1, K c � 1.25, and K c � 1.5 are, respectively, carried out [18], in which…”

Section: Test Plansmentioning

confidence: 99%

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Experimental Study on the Effects of Initial Shear Stress and Vibration Frequency on Dynamic Strength of Saturated Sands

Zhang

Cao²,

Huang

2019

Advances in Materials Science and Engineering

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The cyclic triaxial system is used to investigate the effects of confining pressure, initial shear stress, cyclic stress ratio, and vibration frequency on the dynamic strength characteristics of saturated sand in the Wenchuan area. Results show that when the vibration frequency is constant, the dynamic strength of sand increases with the increase of the consolidation ratio. However, when the consolidation ratio exceeds a certain value, the dynamic strength of sand decreases or increases slowly. The dynamic internal friction angle first increases and then decreases with the increase of consolidation ratio, and the dynamic internal friction angle under different initial shear stresses differs by a maximum of about 12%. When the failure cycles are constant, the dynamic strength and the dynamic internal friction angle of the sand increase with the increase of vibration frequency, and the dynamic internal friction angle at different frequencies differs by a maximum of about 7%. When the cyclic stress ratio is constant, the higher the vibration frequency, the greater the cycles required to achieve the failure. As the cyclic stress ratio decreases, the influence of the vibration frequency on the failure cycles is gradually reduced.

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Section: Test Plansmentioning

confidence: 99%

“…Advances in Materials Science and Engineering and the deformation criterion with a single strain of 5% is taken as the failure criterion [18].…”

mentioning

confidence: 99%

Experimental Study on the Effects of Initial Shear Stress and Vibration Frequency on Dynamic Strength of Saturated Sands

Zhang

Cao²,

Huang

2019

Advances in Materials Science and Engineering

Self Cite

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“…Many researchers have investigated the generation rate of the excess pore water pressure under seismic loading [26][27][28][29][30][31]. The proposed empirical curves by Seed et al [30] and Baziar et al [27] are depicted in Fig.…”

Section: Excess Pore Water Pressurementioning

confidence: 99%

A multilateral analysis of slope failure due to liquefaction-induced lateral deformation using shaking table tests

2020

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Liquefaction-induced lateral displacement can cause substantial deformations and trigger failure in the saturated sandy slopes. This study elaborates on the results of a shaking table experiment performed on a saturated sandy slope model. A transparent Plexiglass container was used to allow visualization of the time-dependent ground displacements at different grid points. Using colored sand grid along with the video-tracking analysis technique provided an excellent opportunity for instant monitoring of the model deformation in both the time and space domains. Furthermore, the pore pressure buildup and dissipation in the soil medium and acceleration time histories of the model were recorded and analyzed. Detailed and comprehensive analyses of the high-resolution recorded data streams resulted in the determination of the onset of liquefaction and the induced subsidence, acceleration response, deformation behavior, and shear strain progress through time and depth at different slope sections. It was also found that the shear strain rate was different in the on-slope and free field locations, and its value was proportional to the liquefaction duration. It was also observed that the variation of the shear strain rate at different depths in the free field led to a localized sliding event.

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“…It was demonstrated that the dominant frequency of earthquake was about 1.4-7.25 Hz, while the fundamental frequency was about 1 Hz [26]. According to the field measured data of traffic load, the vibration frequency is constantly changing [27]. Combined with the range of test instruments, the test load adopts a sine wave with the frequency of 10 Hz.…”

Section: Experiments Instrumentmentioning

confidence: 99%

Dynamic Characteristics of the Rubber‐Tailings Mixture Based on Dynamic Triaxial Test

Liu

Ding

et al. 2020

Advances in Materials Science and Engineering

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The liquefaction of tailings is a common failure mode under earthquake actions. The traditional treatment measures of waste rubber have the disadvantages of environmental pollution and occupying soil resources. The combined treatment of waste rubber and tailings is very likely to have important engineering application and theoretical value, and the dynamic characteristics of the rubber-tailings mixture (RTM) are essential and indispensable for handling them together. In this paper, the dynamic triaxial test was used to study the dynamic mechanical characteristics of the RTM. The test was divided into 5 groups with 54 valid samples. The effects of the rubber particle size, rubber content, consolidation pressure, pH value, and soaking time on the dynamic characteristics of the RTM were studied and discussed. The results show that the liquefaction cycle number of the RTM is 50% higher than that of tailings, and the particle cluster effect theory of the RTM is put forward. It will provide a theoretical basis and guidance for the treatment of the waste rubber and tailings.

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Effects of Initial Shear Stress and Vibration Frequency on the Dynamic Pore-Water Pressure of Saturated Sands

Cited by 4 publications

References 19 publications

Experimental Study on the Effects of Initial Shear Stress and Vibration Frequency on Dynamic Strength of Saturated Sands

Experimental Study on the Effects of Initial Shear Stress and Vibration Frequency on Dynamic Strength of Saturated Sands

A multilateral analysis of slope failure due to liquefaction-induced lateral deformation using shaking table tests

Dynamic Characteristics of the Rubber‐Tailings Mixture Based on Dynamic Triaxial Test

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