DOI QR코드

DOI QR Code

Seismic Fragility of Steel Piping System Based on Pipe Size, Coupling Type, and Wall Thickness

  • Ju, Bu Seog (Department of Civil Engineering, KyungHee University) ;
  • Gupta, Abhinav (Department of Civil Engineering, North Carolina State University) ;
  • Ryu, Yonghee (Department of Civil Engineering, North Carolina State University)
  • Received : 2017.11.28
  • Accepted : 2018.06.06
  • Published : 2018.11.30

Abstract

In this study, a probabilistic framework of the damage assessment of pipelines subjected to extreme hazard scenario was developed to mitigate the risk and enhance design reliability. Nonlinear 3D finite element models of T-joint systems were developed based on experimental tests with respect to leakage detection of black iron piping systems, and a damage assessment analysis of the vulnerability of their components according to nominal pipe size, coupling type, and wall thickness under seismic wave propagations was performed. The analysis results showed the 2-inch schedule 40 threaded T-joint system to be more fragile than the others with respect to the nominal pipe sizes. As for the coupling types, the data indicated that the probability of failure of the threaded T-joint coupling was significantly higher than that of the grooved type. Finally, the seismic capacity of the schedule 40 wall thickness was weaker than that of schedule 10 in the 4-inch grooved coupling, due to the difference in the prohibition of energy dissipation. Therefore, this assessment can contribute to the damage detection and financial losses due to failure of the joint piping system in a liquid pipeline, prior to the decision-making.

Keywords

Acknowledgement

Supported by : Ministry of Land, Infrastructure and Transport of Korean

References

  1. Aljaroudi, A., Khan, F., Akinturk, A., Haddara, M., & Thodi, P. (2015). Risk assessment of off shore crude oil pipeline failure. Journal of Loss Prevention in the Process Industries, 37, 101-109. https://doi.org/10.1016/j.jlp.2015.07.004
  2. Antaki, G. (2004). Seismic capacity of threaded, brazed and grooved clamped joints. In ASME PVP conference, San Diego, CA (pp. 135-145).
  3. ASME. (2004). Rule for construction of nuclear facility components, ASME boiler and pressure vessel code, section III, American Society of Mechanical Engineers (ASME).
  4. Ayers and Ezers. (1996). Northridge earthquake hospital water damage study. Sacramento, CA: Office of Statewide Health Planning and Development (OSHPD), Ayers & Ezers Associates, Inc.
  5. Bachman, R., Bonowitz, D., Caldwell, P. J., Filiatrault, A., Kennedy, R. P., McGavin, G., et al. (2004). Engineering demand parameters for nonstructural components. Redwood City, CA: ATC-58 project task report-ATC.
  6. Clinedinst, W. O. (1965). Strength of threaded joints for steel pipe. Journal of engineering for industry ASME, 87, 125-136. https://doi.org/10.1115/1.3670774
  7. Dow, J. (2010). Testing and analysis of iron and plastic T-joint in sprinkler systems, NEESR-GC: Simulation of the seismic performance of nonstructural systems. Available at: http://nees.org/site/oldness/filedir_2/REU2009_DOW_paper.pdf.
  8. FEMA 461. (2007). Interim testing protocols for determining the seismic performance characteristics of structural and nonstructural components. ATC, 201 Redwood, CA.
  9. Gupta, A., & Choi, B. (2005). Consideration of uncertainties in seismic analysis of coupled building piping system. Nuclear Engineering and Design, 235, 2071-2086. https://doi.org/10.1016/j.nucengdes.2005.05.013
  10. Hwang, H. M., & Huo, J. R. (1998). Seismic fragility analysis of electric substation equipment and structures. Probabilistic Engineering Mechanics, 13(2), 107-116. https://doi.org/10.1016/S0266-8920(97)00017-9
  11. Ju, B. S., & Jung, W. Y. (2013). Seismic fragility evaluation of multibranch piping systems installed in critical low-rise buildings. Disaster Advances, 6(4), 59-65.
  12. Ju, B. S., Jung, W. Y., & Ryu, Y. H. (2013). Seismic fragility evaluation of piping system installed in critical structures. Structural Engineering and Mechanics, An Int’l Journal, 46(3), 337-352. https://doi.org/10.12989/sem.2013.46.3.337
  13. Ju, B. S., Taninada, S. T., & Gupta, A. (2011). Fragility analysis of threaded T-joint connections in hospital piping systems. In Proceedings of the ASME PVP conference, Baltimore, MD.
  14. Jung, W. Y., & Ju, B. S. (2015). Effect of MDOF structures' optimal dampers on seismic fragility of piping. Earthquakes and Structures, An Int'l Journal, 9(3), 563-576. https://doi.org/10.12989/eas.2015.9.3.563
  15. Kennedy, R. P., Cornell, C. A., Campbell, R. D., Kaplan, S., & Perla, H. F. (1980). Probabilistic seismic safety study of an existing nuclear power plant. Nuclear Engineering and Design, 50, 315-338.
  16. Kim, S. H., & Shinozuka, M. (2004). Development of fragility curves of bridges retrofitted by column jacketing. Probabilistic Engineering Mechanics, 19(1-2), 105-112. https://doi.org/10.1016/j.probengmech.2003.11.009
  17. Kircher, C. A. (2003). It makes dollars and sense to improve nonstructural system performance. In: Proceedings of seminar on seismic design, performance, and retrofit of nonstructural components in critical facilities, ATC-29-2, Newport beach, CA.
  18. Mazzoni, S, McKenna, F, Scoot, M. H., & Fenves, G. L. (2006). Open-Sees command language manual. Available at: http://opens ees.berke ley.edu/.
  19. NFPA-13. (2007). Standard for the installation of sprinkler system. Quincy, MA: National Fire Protection Association (NFPA).
  20. OpenSees. (2011). Open system for earthquake engineering simulation (OpenSees). Available at: heep://opensees.berkeley.edu/.
  21. Parvini, M., & Gharagouzlou, E. (2015). Gas leakage consequence modeling for buried gas pipelines. Journal of Loss Prevention in the Process Industries, 37, 110-118. https://doi.org/10.1016/j.jlp.2015.07.002
  22. Porter, K., & Bachman, R. (2006). Developing fragility functions for building components for ATC-58, ATC-58 nonstructural products team.
  23. Ryu, Y. H., Gupta, A., Jung, W. Y., & Ju, B. S. (2016). A reconciliation of experimental and analytical results for piping system. International Journal of Steel Structures, 16(4), 1043-1055. https://doi.org/10.1007/s13296-016-0019-6
  24. Sekiazea, A., Ebihara, M., & Notake, H. (2003). Development of seismic-induced fire risk assessment method for a building. In Fire safety science-proceedings of the seventh international symposium (pp. 309-320).
  25. SMACNA. (2003). Seismic restraint manual guidelines for mechanical systems, sheet metal and air conditioning contractors' national association, Inc.
  26. Tian Y, Fuchs J, Mosqueda G, Filiatrault A. 2010. NEESR Nonstructural:Progress report on tests of Tee Joint component of sprinkler piping system. Progress report, NEESR-GC: Simulation of the seismic performance of nonstructural systems.