Details
| Original language | English |
|---|---|
| Article number | 69 |
| Journal | Innovative Infrastructure Solutions |
| Volume | 5 |
| Publication status | Published - 24 Jun 2020 |
Abstract
Self-compacting filling material or controlled low-strength material (CLSM) is a cementitious material which is liquid during filling, and it is used primarily as backfill, e.g., in trenches. Several products are currently used as CLSM such as flowable fill, controlled density fill, flowable mortar and low-strength plastic soil–cement. The low-strength requirement is necessary to allow for future excavation of CLSM. A two-dimensional numerical model was developed using the finite element system ABAQUS. In this model, the material behavior of granular soil and CLSM is described using an elasto-plastic constitutive model with Mohr–Coulomb failure criterion. Rigid and flexible pipes were modeled once embedded in sandy soil and once embedded in self-compacting material. The numerical model allows the modeling of the effect of hardening process on the overall behavior of the pipe–soil system. The main objective of this study is to investigate the behavior of rigid and flexible pipelines embedded in CLSM as a filling material numerically and to show advantages and disadvantages in comparison with the presently widely used filling materials like sand.
Keywords
- Finite element method, Hardening process, Mohr–Coulomb material model, Pipelines, Self-compacting material (CLSM)
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Engineering
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
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In: Innovative Infrastructure Solutions, Vol. 5, 69, 24.06.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerical investigation on rigid and flexible pipelines embedded in granular and self-compacting materials
AU - Abdel-Rahman, Khalid
AU - Gerlach, Tim
AU - Achmus, Martin
N1 - Funding Information: Open Access funding provided by Projekt DEAL.
PY - 2020/6/24
Y1 - 2020/6/24
N2 - Self-compacting filling material or controlled low-strength material (CLSM) is a cementitious material which is liquid during filling, and it is used primarily as backfill, e.g., in trenches. Several products are currently used as CLSM such as flowable fill, controlled density fill, flowable mortar and low-strength plastic soil–cement. The low-strength requirement is necessary to allow for future excavation of CLSM. A two-dimensional numerical model was developed using the finite element system ABAQUS. In this model, the material behavior of granular soil and CLSM is described using an elasto-plastic constitutive model with Mohr–Coulomb failure criterion. Rigid and flexible pipes were modeled once embedded in sandy soil and once embedded in self-compacting material. The numerical model allows the modeling of the effect of hardening process on the overall behavior of the pipe–soil system. The main objective of this study is to investigate the behavior of rigid and flexible pipelines embedded in CLSM as a filling material numerically and to show advantages and disadvantages in comparison with the presently widely used filling materials like sand.
AB - Self-compacting filling material or controlled low-strength material (CLSM) is a cementitious material which is liquid during filling, and it is used primarily as backfill, e.g., in trenches. Several products are currently used as CLSM such as flowable fill, controlled density fill, flowable mortar and low-strength plastic soil–cement. The low-strength requirement is necessary to allow for future excavation of CLSM. A two-dimensional numerical model was developed using the finite element system ABAQUS. In this model, the material behavior of granular soil and CLSM is described using an elasto-plastic constitutive model with Mohr–Coulomb failure criterion. Rigid and flexible pipes were modeled once embedded in sandy soil and once embedded in self-compacting material. The numerical model allows the modeling of the effect of hardening process on the overall behavior of the pipe–soil system. The main objective of this study is to investigate the behavior of rigid and flexible pipelines embedded in CLSM as a filling material numerically and to show advantages and disadvantages in comparison with the presently widely used filling materials like sand.
KW - Finite element method
KW - Hardening process
KW - Mohr–Coulomb material model
KW - Pipelines
KW - Self-compacting material (CLSM)
UR - http://www.scopus.com/inward/record.url?scp=85086789151&partnerID=8YFLogxK
U2 - 10.1007/s41062-020-00320-z
DO - 10.1007/s41062-020-00320-z
M3 - Article
AN - SCOPUS:85086789151
VL - 5
JO - Innovative Infrastructure Solutions
JF - Innovative Infrastructure Solutions
SN - 2364-4176
M1 - 69
ER -