Panagiota Tasiopoulou, Katerina Ziotopoulou, Francisco Humire, Amalia Giannakou, Jacob Chacko and Thaleia Travasarou have co-authored a paper titled: “Development and Implementation of Semiempirical Framework for Modeling Postliquefaction Shear Deformation Accumulation in Sands” which is available online in Journal of Geotechnical and Geoenvironmental Engineering, ASCE. The paper presents a framework for the estimation of coseismic deformations in the postliquefaction regime developed based on an extensive database of available cyclic undrained stress-controlled tests on clean sand samples without static shear bias, covering a wide range of relative densities. The proposed framework provides a basis for the calibration of advanced constitutive models capable of capturing postliquefaction strain accumulation. A calibration methodology is proposed using both existing liquefaction resistance curves and the newly developed semiempirical relationships for estimating postliquefaction shear strain accumulation.
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