TY - GEN
T1 - Interaction of buried flexible pipelines with soil
AU - Kliszczewicz, B.
N1 - Publisher Copyright:
© 2018 Taylor & Francis Group, London.
PY - 2018
Y1 - 2018
N2 - The subject of the paper concerns an analysis of interaction between flexible pipelines with soil. The thermoplastic flexible pipes (PVC, PE) are widely used in water, waste and gas systems. Their proper functioning in complex loading conditions and durability depends on the suitable identification of loads, the strain estimate, good assortment of pipe and the appropriate installing in the soil. The character of the loads acting on the buried pipes is very complicated. They include: the soil load, surfaces loads including live loads, internal pressure and the impact of underground mining exploitation (continuous and discontinuous deformations). The conditions of pipeline laying: in the common trenches, in the areas of low-bearing soils, flood areas or in regions of landslides are important too. The calculation methods of flexible pipelines (ATV method, Scandinavian method), which are available, make it possible to analyse the characteristic cross section of pipe (the strain plane state). In this methods, the interactions between pipelines and soil during pipe deformation under loads, are represented by specific distributions of vertical and horizontal soil pressures. Far better possibilities of the flexible pipelines behaviour in soil analysis are provided by numerical methods (MES). With this methods the pipeline—soil system is analysed. The pipeline—soil system, depending on the rigidity relation of the both components (substructures), reveals different interaction. Some examples of numerical analysis of straight pipe segments (2D and 3D) as well as curve segments (3D) are presented in the paper. Spatial numerical analyses of the pipeline—soil system, which reflect particular situations, related to the functioning of pipelines under acting live loads and strongly variable soil conditions are undertaken with ZSOIL acad. ver. 11.15 software. An elasto-plastic model with isotropic strengthening (Hardening Soil Small) is used for describing soil behaviour. Results of the numerical analysis are presented as maps of displacements in the soil as well as maps of displacements of pipes.
AB - The subject of the paper concerns an analysis of interaction between flexible pipelines with soil. The thermoplastic flexible pipes (PVC, PE) are widely used in water, waste and gas systems. Their proper functioning in complex loading conditions and durability depends on the suitable identification of loads, the strain estimate, good assortment of pipe and the appropriate installing in the soil. The character of the loads acting on the buried pipes is very complicated. They include: the soil load, surfaces loads including live loads, internal pressure and the impact of underground mining exploitation (continuous and discontinuous deformations). The conditions of pipeline laying: in the common trenches, in the areas of low-bearing soils, flood areas or in regions of landslides are important too. The calculation methods of flexible pipelines (ATV method, Scandinavian method), which are available, make it possible to analyse the characteristic cross section of pipe (the strain plane state). In this methods, the interactions between pipelines and soil during pipe deformation under loads, are represented by specific distributions of vertical and horizontal soil pressures. Far better possibilities of the flexible pipelines behaviour in soil analysis are provided by numerical methods (MES). With this methods the pipeline—soil system is analysed. The pipeline—soil system, depending on the rigidity relation of the both components (substructures), reveals different interaction. Some examples of numerical analysis of straight pipe segments (2D and 3D) as well as curve segments (3D) are presented in the paper. Spatial numerical analyses of the pipeline—soil system, which reflect particular situations, related to the functioning of pipelines under acting live loads and strongly variable soil conditions are undertaken with ZSOIL acad. ver. 11.15 software. An elasto-plastic model with isotropic strengthening (Hardening Soil Small) is used for describing soil behaviour. Results of the numerical analysis are presented as maps of displacements in the soil as well as maps of displacements of pipes.
UR - https://www.scopus.com/pages/publications/85061278580
M3 - Conference contribution
AN - SCOPUS:85061278580
SN - 9781138559530
T3 - Underground Infrastructure of Urban Areas 4 - Proceedings of the 13th International Conference on Underground Infrastructure of Urban Areas, UIUA 2017
SP - 71
EP - 80
BT - Underground Infrastructure of Urban Areas 4 - Proceedings of the 13th International Conference on Underground Infrastructure of Urban Areas, UIUA 2017
A2 - Madryas, Cezary
A2 - Kolonko, Andrzej
A2 - Nienartowicz, Beata
A2 - Szot, Arkadiusz
PB - CRC Press/Balkema
T2 - 13th International Conference on Underground Infrastructure of Urban Areas, UIUA 2017
Y2 - 25 October 2017 through 26 October 2017
ER -