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Evaluating the Performance of Urban Water Pipelines Using Hybrid HFA-FEA Approach

[+] Author Affiliations
Seyed Kazem Sadat Shokouhi, Hamid Reza Vosoughifar

Islamic Azad University, South Tehran Branch, Tehran, Iran

Azam Dolatshah

Islamic Azad University, Dezful Branch, Dezful, Iran

Yousef Rahnavard

Technical University of Braunschweig, Braunschweig, Germany

Paper No. PVP2013-97716, pp. V008T08A026; 10 pages
doi:10.1115/PVP2013-97716
From:
  • ASME 2013 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Paris, France, July 14–18, 2013
  • Conference Sponsors: Pressure Vessels and Piping Division, Nondestructive Evaluation Engineering Division
  • ISBN: 978-0-7918-5574-4
  • Copyright © 2013 by ASME

abstract

Seismic behavior of the urban water pipelines has been considered due to its vital role, and also experiences of recent earthquakes which demonstrate poor seismic performance of mentioned pipelines. Previous experiences such as Bam (2003), Chile (2010) and Japan (2011) earthquakes indicated that urban water pipelines were out of service after earthquake and numerous problems were apparent on the post-disaster management. In this research, the water pipeline network of a zone in Tehran city was selected as a case study. The Hydraulic Failure Analysis (HFA) of the water pipelines in the proposed zone was carried out and failure potential points of the pipelines were determined. In addition, these points were investigated using orifice theory of leakage problem. Then, the proposed network was modeled using Finite Element Analysis (FEA). Also, nonlinear time-history analysis has been undertaken using three seismic scaled records of different earthquakes. Eventually, a statistical test demonstrated that there is a significant difference in the seismic performance of piping system before and after an earthquake.

Copyright © 2013 by ASME

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