Seismic Analysis of Buried Pipelines Subjected to Vertical Fault Movement

by E. A. Vougioukas, Natl Technical Univ of Athens, Athens, Greece,
C. Theodossis, Natl Technical Univ of Athens, Athens, Greece,
P. G. Carydis, Natl Technical Univ of Athens, Athens, Greece,



Document Type: Proceeding Paper

Part of: Lifeline Earthquake Engineering

Abstract:

Earthquakes have demonstrated the vulnerability of buried pipelines, mainly to 'non-dynamic' seismic deformations of the ground, such as liquefaction, landslide and fault movement. This paper presents an analysis procedure that is applicable to both horizontal and vertical fault movement, either for strike slip or reverse strike slip fault. Modifications to an existing computer code have been made so that it includes the previously mentioned parameters, taking also into consideration the severe reduction of the flexural stiffness of the pipe due to large axial forces that appear. Numerous parametric solutions are presented, commented and compared to the results of other investigators.

Subject Headings: Buried pipes | Seismic tests | Seismic effects | Soil-pipe interaction | Vertical loads | Stiffening | Computer programming

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