Closure to “Simplified Procedure for Prediction of Earthquake-Induced Settlements in Partially Saturated Soils” by Abdülhakim Zeybek and Santana Phani Gopal Madabhushi

Zeybek, Abdülhakim; Madabhushi, Spg

doi:10.1061/(asce)gt.1943-5606.0002437

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…Therefore, degrees of saturation lower than S r in correspondence with the AEV (point b in Figure 2) can be reached while maintaining quasi-saturated conditions (occluded air/gas bubbles). Among others, Grozic et al [17] and Zeybek and Madabhushi [6] indicated Sr = 80% as the threshold value between unsaturated and partially saturated conditions.…”

Section: Equivalent Compressibility and Effects Of Air/gas Bubbles On...mentioning

confidence: 96%

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Induced Partial Saturation: From Mechanical Principles to Engineering Design of an Innovative and Eco-Friendly Countermeasure against Earthquake-Induced Soil Liquefaction

Mele,

Lirer,

Flora

2024

Geosciences

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Earthquake-induced soil liquefaction is a catastrophic phenomenon that can damage existing building foundations and other structures, resulting in significant economic losses. Traditional mitigation techniques against liquefaction present critical aspects, such as high construction costs, impact on surrounding infrastructure and effects on the surrounding environment. Therefore, research is ongoing in order to develop new approaches and technologies suitable to mitigate liquefaction risk. Among the innovative countermeasures against liquefaction, Induced Partial Saturation (IPS) is considered one of the most promising technologies. It consists of introducing gas/air bubbles into the pore water of sandy soils in order to increase the compressibility of the fluid phase and then enhance liquefaction resistance. IPS is economical, eco-friendly and suitable for urbanised areas, where the need to reduce the risk of liquefaction must be addressed, taking into account the integrity of existing buildings. However, IPS is still far from being a routine technology since more aspects should be better understood. The main aim of this review is to raise some important questions and encourage further research and discussions on this topic. The review first analyses and discusses the effects of air/gas bubbles on the cyclic behaviour of sandy soils, focusing on the soil volume element scale and then extending the considerations to the real scale. The use of useful design charts is also described. Moreover, a section will be devoted to the effect of IPS under shallow foundations. The readers will fully understand the research trend of IPS liquefaction mitigation and will be encouraged to further explore new practical aspects to overcome the application difficulties and contribute to spreading the use of this technology.

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Section: Equivalent Compressibility and Effects Of Air/gas Bubbles On...mentioning

confidence: 96%

“…In natural deposits, the state of saturation differs according to the configuration of air distribution in soils, as can be seen in Figure 1a (from [6]).…”

Section: Degree Of Saturation In Sandy Soil Depositsmentioning

confidence: 99%