NEHRP Clearinghouse

Title
Seismic Vulnerability, Behavior and Design of Buried Pipelines, Final Report of Phase I Study. (Seismic Vulnerability, Behavior and Design of Underground Piping Systems).
File
PB298269.pdf
Author(s)
Wang, L. R. L.; O'Rourke, M. J.; Pikul, R. R.
Source
National Science Foundation, Washington, DC. Engineering and Applied Science., March 1979, 148 p.
Abstract
The seismic damage and response behavior of general buried pipelines is presented and vulnerability evaluation and design criterion of buried simple piping systems are described. The investigation focuses on the 'Simplified Analysis' and 'Quasi-static Analysis' approaches for determining the axial strains and relative joint displacements/rotations due to seismic shaking. This is justified by observations that the axial strains are predominant and the effects of pipeline inertia forces are negligible. To verify the assumptions and limitations in the analyses, the ground motion characteristics of the San Fernando earthquake were studied in detail. To fulfill the analysis requirements, the related soil parameters are discussed. To evaluate the seismic vulnerability/design of simple buried piping systems, a seismic risk analysis using data for Albany, New York is performed, and a failure criterion for buried water pipes is proposed. Finally, a case study is performed for the Latham Water Distribution System using these procedures. Based on a parametric study, the seismic responses of buried piping systems were found to be influenced by the physical properties of pipes and joints, geotechnical properties at the site, and the seismological parameters of the geographical region.
Keywords
Seismic waves; Dynamic structural analysis; Ground motion; New York; Earthquake engineering; Risk analysis; Pipelines; Earthquakes; Buried pipelines; Earth movements; Albany (New York); Piping systems; Pipe joints; Subsurface structures; California; San Fernando earthquake; Seismic risk