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Title:A Method for the Analysis of Seismic Reliability of Lifeline Systems
Author(s):Mohammadi, Jamshid
Department / Program:Civil Engineering
Discipline:Civil Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Geological Survey
Engineering, Civil
Energy
Abstract:Methods for assessing the seismic safety of a lifeline system, such as a water distribution system, an oil pipeline system, or a transportation network, are developed and introduced; with part of the study being devoted to the development of a relation between the earthquake intensity and the distance.
The attenuation of maximum ground motion intensity with distance is examined, with emphasis on the motions in the near-source regions. The study is based on the analytical calculation of wave propagations in an elastic half-space subjected to a plane of rupture at a given depth. Specific attenuation relations are then developed to be applied in the seismic safety analysis of lifeline systems, in particular, and seismic risk analysis of close-in regions, in general. The earthquake magnitude is related empirically to the source parameters. On this basis, the importance of the source parameters are examined including the effects of the rupture width, the inclination of the rupture plane, and the depth of the rupture from the surface.
With regard to the safety analysis of lifeline systems, it is assumed that: (i) earthquakes originate as ruptures along geologic faults, (ii) the rupture length is a function of the earthquake magnitude; and (iii) the occurrences of future earthquakes constitute a Poisson process.
Two types of hazards from earthquakes are considered; namely, the hazard of a fault-rupture strike on the links of a lifeline system, and the hazard of damage caused by severe ground shaking.
The specific application and contributions of the methods presented herein are then demonstrated for the seismic reliability analyses of two lifeline systems.
Issue Date:1980
Type:Text
Language:English
Description:118 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1980.
URI:http://hdl.handle.net/2142/66876
Other Identifier(s):(UMI)AAI8018190
Date Available in IDEALS:2014-12-13
Date Deposited:1980


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