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Back-calculations of centrifuge tests on pile groups subjected to high-cyclic loading

Machaček, Jan ; Brosz, Frederik ; Staubach, Patrick ; Wichtmann, Torsten ; Zachert, Hauke (2024)
Back-calculations of centrifuge tests on pile groups subjected to high-cyclic loading.
DFI-EFFC International Conference on Deep Foundations and Ground Improvement: Smart Construction for the Future. Berlin, Germany (18.05.2022 - 20.05.2022)
doi: 10.26083/tuprints-00027463
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Item Type: Conference or Workshop Item
Type of entry: Primary publication
Title: Back-calculations of centrifuge tests on pile groups subjected to high-cyclic loading
Language: English
Date: 4 June 2024
Place of Publication: Darmstadt
Collation: 11 Seiten
Event Title: DFI-EFFC International Conference on Deep Foundations and Ground Improvement: Smart Construction for the Future
Event Location: Berlin, Germany
Event Dates: 18.05.2022 - 20.05.2022
DOI: 10.26083/tuprints-00027463
Corresponding Links:
Origin: Secondary publication service
Abstract:

The majority of heavy or strongly loaded structures, for instance high-rise buildings, large span bridges or gas storage tanks are founded on pile groups. However, current design codes and guidelines do not provide a standard procedure for their design under lateral dynamic and high-cyclic loading arising from e.g. wind, temperature or earthquake loads. To establish appropriate design strategies, a better understanding of the pile-soil, pile-pile and pile-cap interaction is required. This paper is focused on finite element backcalculations of centrifuge tests on single piles and pile groups subjected to up to 500 lateral load cycles. For the finite element simulations, a special calculation procedure is applied, combining two kinds of constitutive models, a conventional (Hypoplasticity with Intergranular Strain extension) and a special highcycle accumulation (HCA) model. The parameters of the constitutive models are calibrated based on static and cyclic laboratory tests on the sand used in the centrifuge tests. The performance of the applied numerical procedure is evaluated based on a detailed comparison of the simulation results with the measured data from the centrifuge tests. Overall the applicability of the used numerical strategy for simulating the behavior of pile groups subjected to high-cyclic loading is shown.

Uncontrolled Keywords: pile groups, centrifuge tests, high-cyclic loading, back-analysis, high cyclic accumulation (HCA) model
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-274635
Classification DDC: 500 Science and mathematics > 550 Earth sciences and geology
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute of Geotechnics
Date Deposited: 04 Jun 2024 14:45
Last Modified: 28 Jun 2024 11:17
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/27463
PPN: 51883655X
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