Performance Evaluation of Earthquake Resistant Ductile Iron Pipe Joints Using Combined Experimental and Numerical Method
Publication: Pipelines 2024
ABSTRACT
Water pipelines are prone to failure when seismic events occur, posing significant risks to water supply systems. In recent years, innovative earthquake-resistant joint systems have emerged as potential solutions to mitigate these risks. These joint systems allow for axial movements and rotations, enhancing the pipeline’s ability to withstand ground movement. However, a comprehensive understanding of the mechanisms governing these jointed systems remains unclear. In addition, the understanding of the performance of the joint system simultaneously under both bending and tensile loading condition is limited. To address this knowledge gap, this study conducted a series of pipeline experiments which encompassed tension tests, four-point bending, and bi-axial tension tests, all of which were equipped with distributed fiber optic sensors capable of capturing continuous strain profiles along the pipeline. Furthermore, finite element models were meticulously constructed and validated using the collected experimental data. This integration of empirical and numerical data demonstrated a thorough investigation into the failure mechanisms of 8-in. earthquake-resistant ductile iron pipe.
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REFERENCES
Argyrou, C., O’Rourke, T. D., Pariya-Ekkasut, C., and Stewart, H. E. (2020). Ductile iron pipeline response to earthquake-induced ground rupture. Earthquake Spectra, 36(2), 832–855.
Chiu, S., Zhang, Q., Takhirov, S., and Soga, K. (2023). Direct Tension Testing of 8-in. (200-mm) Diameter TR-XTREME Ductile Iron Pipe. Center for Smart Infrastructure, University of California, Berkeley.
Chiu, S., Zhang, Q., Takhirov, S., and Soga, K. (2023). Biaxial Tension Testing of 8-in. (200-mm) Diameter TR-XTREME Ductile Iron Pipe. Center for Smart Infrastructure, University of California, Berkeley.
Chiu, S., Zhang, Q., Takhirov, S., and Soga, K. (2023). Four-point Bending Testing of 8-in. (200-mm) Diameter TR-XTREME Ductile Iron Pipe. Center for Smart Infrastructure, University of California, Berkeley.
LUNA Inc. (2022). ODiSI 6000 Series Optical Distributed Sensor Interrogators. Retrieved from https://lunainc.com/sites/default/files/assets/files/data-sheet/Luna%20ODiSI%206000%20Data%20Sheet.pdf.
Soga, K., and Luo, L. (2018). Distributed fiber optics sensors for civil engineering infrastructure sensing. Journal of Structural Integrity and Maintenance, 3(1), 1–21.
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Published online: Aug 30, 2024
ASCE Technical Topics:
- Analysis (by type)
- Engineering fundamentals
- Failure analysis
- Infrastructure
- Joints
- Methodology (by type)
- Numerical methods
- Pipe failures
- Pipe joints
- Pipeline management
- Pipeline systems
- Pipelines
- Structural engineering
- Structural members
- Structural systems
- Water and water resources
- Water management
- Water supply
- Water supply systems
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