Performance Evaluation of Buried Concrete Pipe Considering Soil Pressure and Crack Propagation Using 3D Finite Element Analysis
| Autor: | Seungjun Roh, Hoki Ban, Won-Jun Park |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
crack propagation
Soil arching lcsh:Technology damage model lcsh:Chemistry Lateral earth pressure soil pressure distribution medicine General Materials Science Geotechnical engineering lcsh:QH301-705.5 Instrumentation Fluid Flow and Transfer Processes lcsh:T buried concrete pipe Process Chemistry and Technology General Engineering Stiffness Fracture mechanics lcsh:QC1-999 Finite element method Computer Science Applications Overburden lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Soil water medicine.symptom lcsh:Engineering (General). Civil engineering (General) lcsh:Physics Geology Groundwater |
| Zdroj: | Applied Sciences, Vol 11, Iss 3292, p 3292 (2021) Applied Sciences Volume 11 Issue 7 |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11073292 |
| Popis: | Numerous factors affect the soil pressure distributions around buried pipes, including the shape, size, and stiffness of the pipe, burial depth, and the stiffness of the surrounding soil. Additionally, to some extent, a pipe can benefit from the soil arching effect, where the overburden and surcharge pressure at the crown can be supported by the adjacent soil. As a result, a buried pipe only needs to support the portion of the load that is not transferred to the adjacent soil. This paper presents numerical investigations of the soil pressure distributions around buried concrete pipes and crack propagation under different environmental conditions, such as loading, saturation level, and the presence of voids. To this end, a nonlinear elastoplastic model for backfill materials was implemented using finite element software and a user-defined subroutine. Three different backfill materials and two different native soils were selected to examine the material-specific behaviors of concrete pipes, including soil pressure distributions and crack propagation. For each backfill material, the effects of the loading type, groundwater, and voids were investigated. These simulation results provide helpful information regarding pressure redistribution and buried concrete pipe behavior under various environmental conditions. |
| Databáze: | OpenAIRE |
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