3D Finite Element Modeling of SAPL Repaired Corrugated Metal Pipes Buried Under Shallow Cover

Corrugated metal pipes (CMP) are subject to corrosion and have a shorter design life as compared to other types of culverts.  Among the several rehabilitation techniques, spray-applied pipe liners (SAPL) are one of the quick ways to rehabilitate deteriorated CMPs. This new method has been less studied with only a few previous laboratory tests and finite element studies. This paper discusses the calibration of 3D full scale FEM model with the test results that were obtained at the CUIRE laboratory at UTA. The laboratory tests were performed on circular invert-cut CMPs that were rehabilitated by polymeric SAPLs. Total of three different thicknesses, 0.25-in., 0.5-in. and 1-in. were used to repair the invert-cut CMPs. The deterioration in the CMP was represented by the removal of 18- in. invert from the intact CMP. A full 3D corrugated model was developed to represent the test setup in the FE model using ABAQUS. The polymeric material used to repair the CMPs were brittle in nature with very small plastic region and it was represented as the simple-elastic plastic material in the FE model. For the calibration process the results from the FE model were compared to the test in terms of load-displacement curves, earth pressure distribution and strain around the liner. The comparison of these parameters showed the discrepancies of less than 10%, thus calibrating the model.  After the calibration process, the FE model was used to generate the load-displacement graphs for other thickness of the liner.

Language

  • English

Media Info

  • Media Type: Web
  • Features: Figures; References; Tables;
  • Pagination: 23p

Subject/Index Terms

Filing Info

  • Accession Number: 01763571
  • Record Type: Publication
  • Report/Paper Numbers: TRBAM-21-03838
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 23 2020 11:06AM