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Identifying the hazard characteristics of pipes in water distribution systems by using the proportional hazards model: 1. Theory

  • Water Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

A methodology to assess and track changes in the hazard functions between water main breaks are developed by using the proportional hazards model. For this purpose, the risk sets for the estimation of the parameters of the proportional hazards model are redefined for each break interval. The methdology provides a systematic framework for analyzing changes of the hazard functions of water mains as more breaks occur. Therefore, a progression of the hazard function can be examined as the number of pipe breaks increases, and a critical point, at which the hazard function changes to a different functional form, e.g. from an exponential to a constant hazard, can be obtained to distinguish different stages of pipe failure.

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  1. Department of Civil Engineering, Pusan National University, Korea

    Suwan Park (Member. Full Time Lecture)

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  1. Suwan Park
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Correspondence to Suwan Park.

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Park, S. Identifying the hazard characteristics of pipes in water distribution systems by using the proportional hazards model: 1. Theory. KSCE J Civ Eng 8, 663–668 (2004). https://doi.org/10.1007/BF02823557

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  • DOI: https://doi.org/10.1007/BF02823557

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