Review of the response of buried pipelines under seismic excitations
A detailed review of the literature on earthquake response and seismic-resistant design of underground piping systems reveals that current research has three main courses of pursuit: (1) the qualitative analysis of the types of damage possible, (2) the quantitative analysis of the damage, and (3) models for pipelines in a seismic environment. Seismic damage is caused primarily by ground movement and faulting, traveling seismic waves, liquefaction of sandy soil, or stiffness differences between two horizontally adjacent soil layers. In the seismic behavior of buried pipelines, the longitudinal strain normally in much larger than the bending strain in the pipe. However, in pipes of large diameters (60 in and more), bending deformation becomes sizable. The capability to survive fault motion apparently is enhanced by small friction forces acting on the pipeline. Furthermore, pipes made of lower grades of steel show more resistance to large fault displacement due to their greater ductility. Other things being equal, fault-motion capability increases slightly with increasing pipe-wall thickness.
- Research Organization:
- Univ. of Tulsa, OK
- OSTI ID:
- 5779906
- Journal Information:
- Int. J. Earthquake Eng. Struct. Dyn.; (United States), Journal Name: Int. J. Earthquake Eng. Struct. Dyn.; (United States) Vol. 9:2; ISSN IJEEB
- Country of Publication:
- United States
- Language:
- English
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