Response of Buried Pipelines Subject to Earthquake Effects
by M.J. O'Rourke and X. Liu
The
earthquake safety of buried pipelines has attracted a great deal of attention
in recent years. These pipeline systems are commonly used to transport water,
sewage, oil, natural gas and other materials. They are often referred to as
"lifelines" since they carry materials essential to the support of
life and maintenance of property.
Important characteristics of buried pipelines are that they generally cover
large areas and are subject to a variety of geotectonic hazards. They can be
damaged either by permanent movements of ground or by transient seismic wave
propagation. Permanent ground movements include surface faulting, lateral
spreading due to liquefaction, and landsliding. The hazard is usually limited
to small regions within the pipeline network, however the potential for damage
is very high. On the other hand, wave propagation hazards typically affect the
whole pipeline network, but the rate of damage is lower (i.e, lower pipe
breaks and leaks per unit length of pipe).
Contents
This monograph reviews the behavior of buried pipelines and components
subject to permanent ground deformation and wave propagation hazards, as well
as existing methods to quantify their response. The review focuses on
simplified procedures which can be directly used in the seismic analysis and
design of buried pipelines and components. Where alternate approaches for
analysis or design are available, results from the different procedures are
compared. The authors attempt to benchmark the usefulness and relative
accuracy of various approaches through comparison with available case
histories. Chapters include:
- Review of seismic hazards and the performance of buried pipelines in
past earthquakes
- Description of the various forms of permanent ground deformation (PGD)
and procedures to quantify and model the amount and spatial extent of PGD
- Review of seismic wave propagation and procedures for estimating ground
strain and curvature due to travelling wave effects
- Failure modes and criteria for buried pipelines
- Commonly used techniques to model soil-pipe interaction
- Response of continuous pipelines subject to longitudinal and transverse
PGD
- Pipe response due to faulting
- Response of segmented pipeline subject to PGD
- Behavior of continuous pipeline subject to seismic wave propagation
- Behavior of segmented pipelines subject to seismic wave propagation
- Countermeasures to reduce damage to pipelines
Attached Documents
