NEHRP Clearinghouse
- Title
- Vibration Frequencies of Buried Pipelines (Seismic Vulnerability, Behavior and Design of Underground Piping Systems).
- File
- PB290121.pdf
- Author(s)
- Wang, L. R. L.
- Source
- National Science Foundation, Washington, DC. Applied Science and Research Applications., January 1978, 49 p.
- Abstract
- Overall aims of this research are to develop a systematic way of assessing the adequacy and vulnerability of water/sewer distribution systems subjected to seismic loads, and also to develop future design methodologies for water/sewer systems. This paper develops and provides the basic fundamentals of dynamics of buried pipelines. The dynamic fundamentals reported include the determination of fundamental frequencies of continuously elastic-supported straight pipelines subjected to axial, torsional, and flexural motions. Various boundary conditions, which can represent the actual construction, have been considered. Using a finite element and consistent mass approach, the matrix formulation of buried pipeline is developed.
- Keywords
- Seismic design; Earthquake resistant structures; Water pipes; Design; Vibration; Subsurface structures; Sewer pipes; Ground motion; Earthquake engineering; Finite element analysis; Piping systems; Computer aided design; Pipelines; Earthquakes