Numerical analysis of monotonic and cyclic long-term deformations in pile tests from the TU Darmstadt blind prediction contest using an HCA model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10513606" target="_blank" >RIV/00216208:11310/25:10513606 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7TqPq-o3m9" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7TqPq-o3m9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.compgeo.2025.107465" target="_blank" >10.1016/j.compgeo.2025.107465</a>
Alternative languages
Result language
angličtina
Original language name
Numerical analysis of monotonic and cyclic long-term deformations in pile tests from the TU Darmstadt blind prediction contest using an HCA model
Original language description
This article presents the results of numerical simulations for a series of physical pile tests subjected to monotonic and high cyclic loading, conducted as part of the TU Darmstadt blind prediction contest. The mechanical behavior of the soil was modeled using a hypoplastic model for sands with intergranular strain, coupled with a high-cycle accumulation model. Both components were meticulously calibrated based on an extensive experimental dataset, including oedometer compression tests and drained monotonic and cyclic triaxial tests, covering a broad range of initial densities and effective stresses. Three-dimensional pile simulations were performed using Abaqus Standard software, resulting in Class A simulations (blind predictions based solely on laboratory calibrations). The numerical results closely matched experimental data for monotonic lateral loading. However, initial predictions overestimated lateral displacement under cyclic loading. Additional simulations were carried out for identifying the key mechanisms responsible for this overestimation. They include implementation error, stress-dependent initial void ratio, void ratio-dependent stiffness, and initialization of the cyclic preloading state variable. The effect of individual mechanisms is demonstrated in the paper. Finally, a refined model has been defined which yielded accurate predictions of cyclic accumulation. This study underscores both the strengths and limitations of the applied modeling approach for simulating laterally loaded piles under monotonic and cyclic conditions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/LUC24143" target="_blank" >LUC24143: Conceptualisation and modelling of thermal energy storage for hybrid district heating and cooling systems in the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Computers and Geotechnics
ISSN
0266-352X
e-ISSN
1873-7633
Volume of the periodical
187
Issue of the periodical within the volume
November
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
107465
UT code for WoS article
001544480600003
EID of the result in the Scopus database
2-s2.0-105011851704