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Dynamic Behaviors of Piled Embankment Under High-Speed Train Loads

Duan, Xiang / Wu, Ying / Bian, Xuecheng / Jiang, Jianqun

Piled embankments over the soft soil can effectively reduce the post-construction settlement by soil arch effects. To investigate the soil arch effect under train moving loads, the authors established a full three-dimensional finite element model including train set, track structure and piled embankment. Based on the model, dynamic stress under moving train loads is calculated and the influence of soil arch effect is discussed. The numerical analysis reveals that: (1) soil arch effect leads to the redistribution of dynamic stress in piled embankment; (2) geogrids contribute to reducing the dynamic stress on the interpile soils; (3) track structures decide the dynamic stress distribution in the superficial layer in piled embankment, while the dynamic stress distribution at deep layer is mainly related to the pile foundation.

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Dynamic Behaviors of Piled Embankment Under High-Speed Train Loads

Duan, Xiang / Wu, Ying / Bian, Xuecheng / Jiang, Jianqun

Piled embankments over the soft soil can effectively reduce the post-construction settlement by soil arch effects. To investigate the soil arch effect under train moving loads, the authors established a full three-dimensional finite element model including train set, track structure and piled embankment. Based on the model, dynamic stress under moving train loads is calculated and the influence of soil arch effect is discussed. The numerical analysis reveals that: (1) soil arch effect leads to the redistribution of dynamic stress in piled embankment; (2) geogrids contribute to reducing the dynamic stress on the interpile soils; (3) track structures decide the dynamic stress distribution in the superficial layer in piled embankment, while the dynamic stress distribution at deep layer is mainly related to the pile foundation.

Dynamic Behaviors of Piled Embankment Under High-Speed Train Loads

Duan, Xiang / Wu, Ying / Bian, Xuecheng / Jiang, Jianqun

Piled embankments over the soft soil can effectively reduce the post-construction settlement by soil arch effects. To investigate the soil arch effect under train moving loads, the authors established a full three-dimensional finite element model including train set, track structure and piled embankment. Based on the model, dynamic stress under moving train loads is calculated and the influence of soil arch effect is discussed. The numerical analysis reveals that: (1) soil arch effect leads to the redistribution of dynamic stress in piled embankment; (2) geogrids contribute to reducing the dynamic stress on the interpile soils; (3) track structures decide the dynamic stress distribution in the superficial layer in piled embankment, while the dynamic stress distribution at deep layer is mainly related to the pile foundation.

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Titel:

Dynamic Behaviors of Piled Embankment Under High-Speed Train Loads

Weitere Titelangaben:

Lecture Notes in Civil Engineering

Beteiligte:

Tutumluer, Erol (Herausgeber:in) / Nazarian, Soheil (Herausgeber:in) / Al-Qadi, Imad (Herausgeber:in) / Qamhia, Issam I.A. (Herausgeber:in) / Duan, Xiang (Autor:in) / Wu, Ying (Autor:in) / Bian, Xuecheng (Autor:in) / Jiang, Jianqun (Autor:in)

Erschienen in:

Advances in Transportation Geotechnics IV ; Kapitel: 78 ; 1041-1047

Lecture Notes in Civil Engineering ; 166

Erscheinungsdatum:

17.09.2021

Format / Umfang:

7 pages

ISBN:

978-3-030-77238-3 , 978-3-030-77237-6

ISSN:

2366-2565 , 2366-2557

DOI:

https://doi.org/10.1007/978-3-030-77238-3_78

Medientyp:

Aufsatz/Kapitel (Buch)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Piled embankment , Soil arch effect , Dynamic stress Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Transportation Technology and Traffic Engineering

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