Abstract

ABSTRACT Through self-developed testing technology, in situ liquefaction tests are conducted and dynamic properties of saturated sand are investigated. Testing results indicate that pore pressure-shear strain relationship (PSR) is independent of acceleration and pore pressure generation is relatively uniquely related to the induced shear strain. Based on experimental results, two equations are, respectively, proposed to describe PSR and G/Gmax~ γ of liquefied sand. It reveals that shear strain can fundamentally reflect the process of soil liquefaction and the effect of liquefaction on dynamic characteristics of sand, which provides more solid foundations to develop strain-based analytical method and strategy for soil liquefaction.

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