Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Uplift Soil—Pipe Interaction Considering Large Deformation and Post-Peak Softening of Dense Sand
Uplift behavior is an important aspect in the analysis of soil—pipe interaction under circumstances of geohazards, such as landslide, liquefaction, faulting, and soil subsidence. Such behavior includes large displacement of pipe, and large deformation and nonlinearity in soil responses. Conventionally, the uplift soil—pipe interaction problem is analyzed by Finite Element Method (FEM), which becomes an error-prone approach when element mesh being distorted in large deformation scenarios. This study aims to analyze such interaction problem for the case of pipe moving upward in dense sand, in which Smoothed Particle Hydrodynamics (SPH) method is used to deal with large deformation of soil. In the soil region with small deformation, FEM is used to reduce the computational time. The post-peak softening behavior of dense sand is represented by the variations of mobilized friction and dilatancy angles depending on plastic shear strain. The hybrid SPH-FEM model of uplift soil—pipe interaction problem is validated with published experimental data. More numerical simulations are subsequently conducted to investigate the uplift resistance, failure mode, and shear band appeared in soil.
Uplift Soil—Pipe Interaction Considering Large Deformation and Post-Peak Softening of Dense Sand
Uplift behavior is an important aspect in the analysis of soil—pipe interaction under circumstances of geohazards, such as landslide, liquefaction, faulting, and soil subsidence. Such behavior includes large displacement of pipe, and large deformation and nonlinearity in soil responses. Conventionally, the uplift soil—pipe interaction problem is analyzed by Finite Element Method (FEM), which becomes an error-prone approach when element mesh being distorted in large deformation scenarios. This study aims to analyze such interaction problem for the case of pipe moving upward in dense sand, in which Smoothed Particle Hydrodynamics (SPH) method is used to deal with large deformation of soil. In the soil region with small deformation, FEM is used to reduce the computational time. The post-peak softening behavior of dense sand is represented by the variations of mobilized friction and dilatancy angles depending on plastic shear strain. The hybrid SPH-FEM model of uplift soil—pipe interaction problem is validated with published experimental data. More numerical simulations are subsequently conducted to investigate the uplift resistance, failure mode, and shear band appeared in soil.
Uplift Soil—Pipe Interaction Considering Large Deformation and Post-Peak Softening of Dense Sand
Lecture Notes in Civil Engineering
Reddy, J. N. (Herausgeber:in) / Wang, Chien Ming (Herausgeber:in) / Luong, Van Hai (Herausgeber:in) / Le, Anh Tuan (Herausgeber:in) / Nguyen, Kien Trung (Autor:in) / Khoa, Nguyen Viet Anh (Autor:in) / Le, Anh Tuan (Autor:in) / Le, Trong Nghia (Autor:in) / Le, Ba Vinh (Autor:in) / Hai, Do Thanh (Autor:in)
The International Conference on Sustainable Civil Engineering and Architecture ; 2023 ; Da Nang City, Vietnam
Proceedings of the Third International Conference on Sustainable Civil Engineering and Architecture ; Kapitel: 131 ; 1234-1241
12.12.2023
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Soil-pipe Interaction , Smoothed Particle Hydrodynamics , Finite Element Method , Upward Movement , Dense Sand Energy , Sustainable Architecture/Green Buildings , Structural Materials , Geotechnical Engineering & Applied Earth Sciences , Building Construction and Design , Construction Management , Engineering
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