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PRCI PR-271-0184
- Extended Model for Pipe Soil Interaction
- Report / Survey by Pipeline Research Council International, 08/01/2003
- Publisher: PRCI
$75.00$150.00
L51990e
C-CORE
Need: The need to extend and improve guidelines on differential landslide ground movement effects and to quantify practical mitigative methods for reduction of these effects on buried gas pipelines led to this program. Many pipeline-soil interaction models have been developed based on research in pipe-soil interaction and anchor plate-soil interaction. Research on anchor behaviors related to pipe-soil interaction will also be covered in this report.
Result: This program contributes to maintaining and improving the integrity and safety of existing pipelines with regard to ground movement hazards, and reducing the capital costs of new pipeline systems. The research program focused on the axial, lateral and complex loading of pipeline due to soil movements. It includes (1) a literature review: it presents significant issues related to modeling pipe-soil interaction with a focus to recent development since ASCE (1984); (2) axial loading: it includes a summary of the methods to estimate the axial soil forces on pipeline and recent field measurements on decommissioned pipe sections in weak to desiccated, cohesive to sandy silts in California; (3) lateral loading of buried pipeline: it covers the effects of cover depth, soil strength, loading rate, trench geometry and backfill strength on pipe-soil interaction; (4) complex loading of buried pipeline: the interaction between the lateral and axial soil forces on pipeline are studied; and (5) quantification of mitigative methods: a physical testing program including a total of 20 laterally loaded pipelines are used to identify and quantify the effects of various mitigative methods on reducing lateral loads transferred to a buried pipeline.
Benefit: The studies recommended changes to "guidelines on differential landslide ground movement effects from axial and lateral loading, including trench effects, on buried gas pipelines".
C-CORE
Need: The need to extend and improve guidelines on differential landslide ground movement effects and to quantify practical mitigative methods for reduction of these effects on buried gas pipelines led to this program. Many pipeline-soil interaction models have been developed based on research in pipe-soil interaction and anchor plate-soil interaction. Research on anchor behaviors related to pipe-soil interaction will also be covered in this report.
Result: This program contributes to maintaining and improving the integrity and safety of existing pipelines with regard to ground movement hazards, and reducing the capital costs of new pipeline systems. The research program focused on the axial, lateral and complex loading of pipeline due to soil movements. It includes (1) a literature review: it presents significant issues related to modeling pipe-soil interaction with a focus to recent development since ASCE (1984); (2) axial loading: it includes a summary of the methods to estimate the axial soil forces on pipeline and recent field measurements on decommissioned pipe sections in weak to desiccated, cohesive to sandy silts in California; (3) lateral loading of buried pipeline: it covers the effects of cover depth, soil strength, loading rate, trench geometry and backfill strength on pipe-soil interaction; (4) complex loading of buried pipeline: the interaction between the lateral and axial soil forces on pipeline are studied; and (5) quantification of mitigative methods: a physical testing program including a total of 20 laterally loaded pipelines are used to identify and quantify the effects of various mitigative methods on reducing lateral loads transferred to a buried pipeline.
Benefit: The studies recommended changes to "guidelines on differential landslide ground movement effects from axial and lateral loading, including trench effects, on buried gas pipelines".
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