Seismic Reliability of Hierarchical Lifeline Systems

by M. Shinozuka, Princeton Univ, United States,
T. Koike, Princeton Univ, United States,
H. Kameda, Princeton Univ, United States,

Document Type: Proceeding Paper

Part of: Seismic Design and Construction of Complex Civil Engineering Systems


The problem to be considered here is the vulnerability and reliability of a functionally as well as physically hierarchical lifeline system. Most major lifeline systems have this feature; For example, water and gas delivery systems in an urban area usually consist of high-pressure transmission, medium-pressure distribution and low-pressure supply pipeline networks. It is the purpose of the present paper to demonstrate that analytical expendiency as well as numerical efficiency will be substantially and possibly dramatically enhanced if we recognize and take advantage of such hierarchical features of lifeline systems, particularly for the purpose of performing functional reliability analyses of systems.

Subject Headings: Seismic tests | Seismic effects | System reliability | Lifeline systems | Gas pipelines | Pressure distribution | System analysis | Load and resistance factor design

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