Determination of hypoplastic parameters for a typical gravel backfill material of railway bridges

Alexander Stastny; Lukas Knittel; Franz Tschuchnigg; Thomas Meier

Determination of hypoplastic parameters for a typical gravel backfill material of railway bridges

Alexander Stastny^*, Lukas Knittel, Franz Tschuchnigg, Thomas Meier

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

Laboratory test programs on gravel are rare due to the maximum grain size of the material. In this paper an experimental program with triaxial tests under cyclic loading and oedometric tests on highly compacted gravel specimens, representa-
tive for bridge backfills materials, is summarized. It is used to calibrate a hypoplastic constitutive model, which includes an extension for intergranular strain to account for the cyclic loading behaviour. So far calibrated parameter sets of this soil model are scarce in literature, especially for coarse grained materials. The calibrated parameter set can be used in numerical studies, e. g. on the cyclic soil structure interaction of integral railway bridge

Original language	English
Title of host publication	IS-Porto 2023 - Proceedings
Subtitle of host publication	8th International Symposium on Deformation Characteristics of Geomaterials
Place of Publication	Porto
Number of pages	6
Volume	1
Publication status	Published - 3 Sept 2023
Event	8th International Symposium on Deformation Characteristics of Geomaterials: IS-Porto 2023 - Porto, Portugal Duration: 3 Sept 2023 → 9 Sept 2023

Conference

Conference	8th International Symposium on Deformation Characteristics of Geomaterials
Abbreviated title	IS-Porto 2023
Country/Territory	Portugal
City	Porto
Period	3/09/23 → 9/09/23

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Determination of hypoplastic parameters for a typical gravel backfill material of railway bridges. / Stastny, Alexander; Knittel, Lukas; Tschuchnigg, Franz et al.
IS-Porto 2023 - Proceedings: 8th International Symposium on Deformation Characteristics of Geomaterials. Vol. 1 Porto, 2023.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Stastny, A, Knittel, L, Tschuchnigg, F & Meier, T 2023, Determination of hypoplastic parameters for a typical gravel backfill material of railway bridges. in IS-Porto 2023 - Proceedings: 8th International Symposium on Deformation Characteristics of Geomaterials. vol. 1, Porto, 8th International Symposium on Deformation Characteristics of Geomaterials, Porto, Portugal, 3/09/23. <https://www.issmge.org/uploads/publications/121/122/isdcg2023-11-1-c.pdf>

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abstract = "Laboratory test programs on gravel are rare due to the maximum grain size of the material. In this paper an experimental program with triaxial tests under cyclic loading and oedometric tests on highly compacted gravel specimens, representa-tive for bridge backfills materials, is summarized. It is used to calibrate a hypoplastic constitutive model, which includes an extension for intergranular strain to account for the cyclic loading behaviour. So far calibrated parameter sets of this soil model are scarce in literature, especially for coarse grained materials. The calibrated parameter set can be used in numerical studies, e. g. on the cyclic soil structure interaction of integral railway bridge",

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AU - Stastny, Alexander

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AU - Meier, Thomas

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Y1 - 2023/9/3

N2 - Laboratory test programs on gravel are rare due to the maximum grain size of the material. In this paper an experimental program with triaxial tests under cyclic loading and oedometric tests on highly compacted gravel specimens, representa-tive for bridge backfills materials, is summarized. It is used to calibrate a hypoplastic constitutive model, which includes an extension for intergranular strain to account for the cyclic loading behaviour. So far calibrated parameter sets of this soil model are scarce in literature, especially for coarse grained materials. The calibrated parameter set can be used in numerical studies, e. g. on the cyclic soil structure interaction of integral railway bridge

AB - Laboratory test programs on gravel are rare due to the maximum grain size of the material. In this paper an experimental program with triaxial tests under cyclic loading and oedometric tests on highly compacted gravel specimens, representa-tive for bridge backfills materials, is summarized. It is used to calibrate a hypoplastic constitutive model, which includes an extension for intergranular strain to account for the cyclic loading behaviour. So far calibrated parameter sets of this soil model are scarce in literature, especially for coarse grained materials. The calibrated parameter set can be used in numerical studies, e. g. on the cyclic soil structure interaction of integral railway bridge

M3 - Conference paper

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BT - IS-Porto 2023 - Proceedings

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T2 - 8th International Symposium on Deformation Characteristics of Geomaterials

Y2 - 3 September 2023 through 9 September 2023

ER -

Determination of hypoplastic parameters for a typical gravel backfill material of railway bridges

Abstract

Conference

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