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Deformation Mode of Geocell–Soil Composite Structure
https://orcid.org/http://orcid.org/0000-0001-9149-0321
https://orcid.org/http://orcid.org/0000-0003-0396-5759
https://orcid.org/http://orcid.org/0000-0001-6544-0857
This paper discusses to develop a three dimensional (3D) numerical model which can effectively simulate the behavior of geocell reinforced soils using a commercial finite element program. In the usual instance, numerical modeling of geocell is difficult due to their curved geometry and complex material surfaces. It is therefore not surprising that much of the previous studies on geocell have eluded this approach and have otherwise used an equivalent composite method. It treats the geocell–soil composites as a new soil layer with improved strength and stiffness properties. Unfortunately, despite its simplicity, this method can often be incorrect as it does not properly account for the state of in situ stress in the soils. Plane stress conditions are also violated especially when the geocell are placed close to the ground surface. Likewise, the shape of the geocells also affect the working of geocell. In the present study, the reinforced soil layer considers the interaction between the geocell and its nodes at connections. Geocell are modelled using poly-curves available in the software. Three types of simulations are then made, they are: reinforced soil with geocell and unreinforced soil, rectangular geocell with curvilinear geocell, and geocell with different axial stiffness. It was seen that the secant modulus of the reinforced soils increases with the increase in the curvature of the geocell. And as the axial stiffness of the geocell material increases, the secant modulus of the reinforced soil also improves.
Deformation Mode of Geocell–Soil Composite Structure
https://orcid.org/http://orcid.org/0000-0001-9149-0321
https://orcid.org/http://orcid.org/0000-0003-0396-5759
https://orcid.org/http://orcid.org/0000-0001-6544-0857
This paper discusses to develop a three dimensional (3D) numerical model which can effectively simulate the behavior of geocell reinforced soils using a commercial finite element program. In the usual instance, numerical modeling of geocell is difficult due to their curved geometry and complex material surfaces. It is therefore not surprising that much of the previous studies on geocell have eluded this approach and have otherwise used an equivalent composite method. It treats the geocell–soil composites as a new soil layer with improved strength and stiffness properties. Unfortunately, despite its simplicity, this method can often be incorrect as it does not properly account for the state of in situ stress in the soils. Plane stress conditions are also violated especially when the geocell are placed close to the ground surface. Likewise, the shape of the geocells also affect the working of geocell. In the present study, the reinforced soil layer considers the interaction between the geocell and its nodes at connections. Geocell are modelled using poly-curves available in the software. Three types of simulations are then made, they are: reinforced soil with geocell and unreinforced soil, rectangular geocell with curvilinear geocell, and geocell with different axial stiffness. It was seen that the secant modulus of the reinforced soils increases with the increase in the curvature of the geocell. And as the axial stiffness of the geocell material increases, the secant modulus of the reinforced soil also improves.
Deformation Mode of Geocell–Soil Composite Structure
https://orcid.org/http://orcid.org/0000-0001-9149-0321
https://orcid.org/http://orcid.org/0000-0003-0396-5759
https://orcid.org/http://orcid.org/0000-0001-6544-0857
This paper discusses to develop a three dimensional (3D) numerical model which can effectively simulate the behavior of geocell reinforced soils using a commercial finite element program. In the usual instance, numerical modeling of geocell is difficult due to their curved geometry and complex material surfaces. It is therefore not surprising that much of the previous studies on geocell have eluded this approach and have otherwise used an equivalent composite method. It treats the geocell–soil composites as a new soil layer with improved strength and stiffness properties. Unfortunately, despite its simplicity, this method can often be incorrect as it does not properly account for the state of in situ stress in the soils. Plane stress conditions are also violated especially when the geocell are placed close to the ground surface. Likewise, the shape of the geocells also affect the working of geocell. In the present study, the reinforced soil layer considers the interaction between the geocell and its nodes at connections. Geocell are modelled using poly-curves available in the software. Three types of simulations are then made, they are: reinforced soil with geocell and unreinforced soil, rectangular geocell with curvilinear geocell, and geocell with different axial stiffness. It was seen that the secant modulus of the reinforced soils increases with the increase in the curvature of the geocell. And as the axial stiffness of the geocell material increases, the secant modulus of the reinforced soil also improves.
Deformation Mode of Geocell–Soil Composite Structure
Lecture Notes in Civil Engineering
Jose, Babu T. (editor) / Sahoo, Dipak Kumar (editor) / Puppala, Anand J. (editor) / Reddy, C. N. V. Satyanarayana (editor) / Abraham, Benny Mathews (editor) / Vaidya, Ravikiran (editor) / Sankhat, Kuldeep T. (author) / Chavda, Jitesh T. (author) / Juneja, Ashish (author)
Indian Geotechnical Conference ; 2022 ; Kochi, India
Proceedings of the Indian Geotechnical Conference 2022 Volume 3 ; Chapter: 26 ; 295-306
2024-05-31
12 pages
Article/Chapter (Book)
Electronic Resource
English