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Air injection method as a liquefaction countermeasure for saturated granular soils
Transportation Geotechnics ( IF 5.3 ) Pub Date : 2021-07-10 , DOI: 10.1016/j.trgeo.2021.100622
Adyasha Swayamsiddha Amanta 1 , Satyanarayana Murty Dasaka 1
Affiliation  

Liquefaction is mostly seen in saturated granular cohesionless soils when subjected to static and dynamic loading. Mainly in the constructed facilities, liquefaction on its way brings huge destruction. This study investigates the effectiveness of air injection method against liquefaction of saturated granular soil by cyclic triaxial apparatus. Strain controlled cyclic triaxial tests were performed on Indian standard sand considering strain amplitude, confining pressures and air injection pressures as variables. Dynamic properties of fully saturated and air injected samples were compared. Resistance of the samples towards liquefaction were also investigated. The behavior of air injected soil sample was also observed continuously for 30 days. It is observed that desaturation of soil through air injection method significantly improves the liquefaction resistance of the soil and air injected samples remained desaturated even after 30 days of air injection.



中文翻译:

空气注入法作为饱和颗粒土的液化对策

当承受静态和动态载荷时,液化主要发生在饱和颗粒无粘性土中。主要是在已建成的设施中,沿途的液化会带来巨大的破坏。本研究通过循环三轴装置研究了空气注入法对饱和颗粒土液化的有效性。以应变幅值、围压和注气压力为变量,对印度标准砂进行了应变控制循环三轴试验。比较了完全饱和和空气注入样品的动态特性。还研究了样品对液化的抵抗力。空气注入土壤样品的行为也连续观察了 30 天。

更新日期:2021-07-22
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