Numerical Modeling of Liquefaction-Induced Downdrag: Validation against Centrifuge Model Tests

نویسندگان

چکیده

Earthquake-induced soil liquefaction can cause settlement around piles, resulting in drag load and pile after shaking stops. Estimating the axial distribution is important for designing evaluating performance of axially loaded piles liquefiable soils. Commonly used neutral plane solution methods model layer as an equivalent consolidating clay without considering sequencing pattern excess pore pressure dissipation settlement. Moreover, changes shaft tip resistance due to pressures are ignored. A TzQzLiq numerical was developed using existing TzLiq material new QzLiq modeling liquefaction-induced downdrag on piles. The accounts change pile’s capacity free-field develop or dissipate soil. validated against data from a series large centrifuge tests, procedure obtaining necessary information those described. Additionally, sensitivity study properties performed their effect Analysis results show that proposed reasonably predict time histories soils both during postshaking.

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ژورنال

عنوان ژورنال: Journal of Geotechnical and Geoenvironmental Engineering

سال: 2022

ISSN: ['1943-5606', '1090-0241']

DOI: https://doi.org/10.1061/(asce)gt.1943-5606.0002930