NEHRP Clearinghouse
- Title
- Seismic Wave Propagation Effects on Straight Jointed Buried Pipelines.
- File
- PB90162322.pdf
- Author(s)
- Elhmadi, K.; O'Rourke, M. J.
- Source
- National Center for Earthquake Engineering Research, Buffalo, NY.; National Science Foundation, Washington, DC., August 24, 1989, 224 p.
- Abstract
- The behavior of straight jointed buried pipelines subjected to seismic wave propagation is investigated. A realistic model is developed for the seismic response analysis of straight jointed buried cast-iron pipes with lead-caulked joints and ductile iron pipes with rubber-gasketed joints. The model takes into consideration the non-linearity as well as variability of the pipeline and ground characteristics. The results of the analysis under seismic wave propagation indicate that variability can have a significant influence upon response parameters. The seismic vulnerability of these pipes is examined as a function of the seismically induced ground strain. The effects of ground rotation are found to be negligible. Such a vulnerability analysis made it possible to develop estimation of damage ratios due to a joint pull-out failure mode. These estimates are benchmarked against observed damage to water systems and are found to yield reasonable results.
- Keywords
- Pipe joints; Numerical solution; Cast iron; Subsurface structures; Mathematical models; Seismic risk; Earthquake engineering; Water pipelines; Underground structures; Pipelines; Soil mechanics