NEHRP Clearinghouse
- Title
- Quasi-Static Analysis Formulation for Straight Buried Piping Systems, (Seismic Vulnerability, Behavior and Design of Underground Piping Systems).
- File
- PB290100.pdf
- Author(s)
- Wang, L. R. L.
- Source
- National Science Foundation, Washington, DC. Applied Science and Research Applications., July 1978, 31 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 technical memorandum develops the quasi-static governing equilibrium equations for the axial response of buried pipelines subjected to earthquakes. The formulation is general and includes such parameters as variable elasticity, segment lengths, and cross sections of pipes, variable joint stiffnesses, variable soil resistant characteristics, and end conditions. Variations of seismic wave form, propagation velocity, and delay time can be incorporated into the numerical procedure.
- Keywords
- Pipe joints; Seismic design; Earthquake resistant structures; Water pipes; Design; Subsurface structures; Sewer pipes; Earthquake engineering; Piping systems; Pipelines; Earthquakes; Dynamic structural analysis