Improved Hardin-Drnevich model for the dynamic modulus and damping ratio of frozen soil

Yu, Xiaobo; Liu, Huitao; Sun, Rui; Yuan, Xiaoming

doi:10.1016/j.coldregions.2018.05.004

Cited by 16 publications

(14 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8,20 For the equivalent linear analysis, shear modulus G and damping ratio D of all soil layers in the soil profile need to be defined. Typically, for the shear modulus, normalized shear modulus G/G max is used, where G max denotes F I G U R E 4 Correction factors depending on the soil temperature: (A) ( ), (B) ( ), (C) ( ) 26 maximum shear modulus. For constructing the frozen soil profile, therefore, G/G max and D of each soil layer in the profile need to be determined by considering the temperature variation along depth corresponding to a given soil temperature profile.…”

Section: Construction Of Soil Profile In a Permafrost Regionmentioning

confidence: 99%

“…Several studies have been conducted to evaluate site response in permafrost regions. 16,18,[23][24][25][26] In these studies, parametric analysis was conducted for various compositions of frozen soil layers, that is, the soil layer's vertical location and thickness through one-dimensional (1-D) equivalent linear analysis. 8,20 In the studies, the influence of a frozen soil layer's composition on the site response was investigated in terms of peak ground acceleration (PGA), predominant period, or response spectrum.…”

Section: F I G U R Ementioning

confidence: 99%

“…Then, for the sub-layers in which the soil temperature is higher than 0°C, its G/G max and D are determined to be the same as that of the soil layer at the same depth in the unfrozen soil profile. For the sub-layers in which the temperature is less than 0°C, its G/G max and D are determined based on Yu et al 26 Yu et al 26 proposed a method for determining G/G max and D of frozen soil from that of unfrozen soil. In the study, assuming that G/G max and D of unfrozen soil follows the Hardin-Drnevich model, 5 three correction factors 𝛼 𝐺 (𝑇), 𝛼 𝐷 (𝑇), and 𝛼 𝛾 (𝑇) are proposed such that G/G max and D for its frozen state at temperature T °C can be determined as follows:…”

Section: Construction Of Soil Profile In a Permafrost Regionmentioning

confidence: 99%

“…Several studies have been conducted to evaluate site response in permafrost regions 16 , 18 , 23–26 . In these studies, parametric analysis was conducted for various compositions of frozen soil layers, that is, the soil layer's vertical location and thickness through one‐dimensional (1‐D) equivalent linear analysis 8 , 20 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of seasonal soil temperature variation and global warming on the seismic response of frozen soils in permafrost regions

Park

Kwon

Sarno

2021

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

There has been growing interest in seismic hazards in permafrost regions as development in those regions has increased. Because major infrastructure, such as natural gas pipelines, has been constructed in permafrost regions, it is necessary to evaluate the seismic safety of such a network system. As frozen soil's dynamic properties differ from those of its unfrozen state, the characteristics of seismic waves propagated through frozen soil layers in permafrost differ from those propagated through unfrozen soil. Thus, the dynamic properties and composition of frozen soil layers located between bedrock and the ground surface need to be realistically considered in evaluating the seismic hazards of permafrost regions. The frozen soil layer's composition greatly depends on soil temperatures which vary seasonally and are gradually increasing due to global warming, therefore it is necessary to consider soil temperature variation. In this study, comprehensive parametric site response analysis was carried out based on measured data regarding seasonal and annual temperature variation to investigate seismic hazards. The soil temperature variation between summer and winter and temperature increases due to global warming were the main considerations. The analysis results clearly show that the soil temperature variation significantly impacts seismic hazards in the permafrost region, leading to different site response characteristics than those in the non-permafrost region.

show abstract

Section: Construction Of Soil Profile In a Permafrost Regionmentioning

confidence: 99%

Section: F I G U R Ementioning

confidence: 99%

Section: Construction Of Soil Profile In a Permafrost Regionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of seasonal soil temperature variation and global warming on the seismic response of frozen soils in permafrost regions

Park

Kwon

Sarno

2021

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…erefore, this paper emphatically studied the evolution law of the dynamic parameters and the shape of hysteresis loop with increasing number of load cycles under different cyclic stress paths. According to the work in [11,28], the dynamic modulus and damping ratio of the frozen soil are influenced by the many factors, such as the dynamic stress (strain) amplitude, temperature, and moisture content. Ling et al [29] studied the relationship between the dynamic elastic modulus ratio and normalized shear strain under varies different conditions through loading step by step.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Parameters and Hysteresis Loop Characteristics of Frozen Silt Clay under Different Cyclic Stress Paths

Liu

Zhou

et al. 2021

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In cold regions, the long-term stability of engineering facilities is unavoidably influenced by the negative temperature, freeze-thaw process, dry-wet process, and dynamic loading conditions induced by earthquakes and traffic loads. In order to investigate the effects of different cyclic stress paths on the evolution of dynamic mechanical properties of frozen silt clay, a series of cyclic triaxial tests with variation confining pressure (VCP) or constant confining pressure (CCP) were performed. Triaxial low-temperature apparatus (MTS-810) was taken advantage of to simulating various cyclic stress paths by changing cyclic loading conditions of axial stress and confining pressure. In this paper, the evolution features of the axial resilient modulus, damping ratios, and the shape of hysteresis loops with an increase in the number of load cycles under different dynamic stress paths are comprehensively studied. The results show that the loading angle of cyclic stress path and the phase difference between cyclic axial stress and confining pressure are the main factors that remarkably affect the development characteristics of the resilient modulus and damping ratio. With increasing of the loading angle and phase difference, the resilient modulus increases, but damping ratio increases with increasing of loading angle and with decreasing of phase difference. With the continuous increase in the number of loading cycles, the samples of frozen soil show compacting and hardening characteristics. With an increase in the number of load cycles, the shape of hysteresis loop becoming narrows, the resilient modulus decreases at the initial stage and then gradually increases, and the damping ratio stably decreases. According to contrastively analyzing the evolution of dynamic parameters and the shape features of hysteresis loops under various cyclic stress paths, it can be clearly discovered that the evolution of sample microstructure and the development of dynamic characteristics of frozen samples have obvious dependence on the cyclic stress path. Therefore, the effects of variable confining pressure (VCP) on dynamic behaviors of frozen soils are nonnegligible in practical cold region engineering.

show abstract

Monte Carlo seismic response analysis of permafrost sites: a case study

Zhang

Cheng

et al. 2022

Nat Hazards

View full text Add to dashboard Cite

Improved Hardin-Drnevich model for the dynamic modulus and damping ratio of frozen soil

Cited by 16 publications

References 23 publications

Influence of seasonal soil temperature variation and global warming on the seismic response of frozen soils in permafrost regions

Influence of seasonal soil temperature variation and global warming on the seismic response of frozen soils in permafrost regions

Dynamic Parameters and Hysteresis Loop Characteristics of Frozen Silt Clay under Different Cyclic Stress Paths

Monte Carlo seismic response analysis of permafrost sites: a case study

Contact Info

Product

Resources

About