Assessment of Buried Pipeline Response to Earthquake Loading by Using GIS

Abstract eng:
Evaluation of pipeline systems against future earthquakes is very important for the efforts to build earthquake-resistant infrastructures. Continuous service of pipeline systems or getting their functionality quickly back right after an earthquake is very important and crucial for the urban societies. In this study, pipeline damage relationships obtained from the 1994 Northridge earthquake and Los Angeles water supply data are revisited. ShakeMap peak ground velocity (PGV) values are used and effects of PGV contour intervals on damage relationships are evaluated. The relationships developed herein can be utilized in pre-earthquake evaluation of buried pipeline systems as well as immediate post-earthquake applications such as ShakeCast. Development of a software program which works with GIS is presented. The program is part of an extensive study with the objective to develop a new methodology for the assessment of earthquake effects on buried pipeline systems by integrating geographical information systems (GIS) with analytical methods. At this initial phase, the software performs Stage 1 checks by evaluating whether the given pipeline system satisfy certain seismic design and code requirements. Some inputs to the program are seismic information (e.g., ground shaking maps) and soil data (e.g. soil type maps, liquefaction hazard maps, etc.). Both transient and permanent ground deformation effects are considered. The program provides users the pipelines that need further seismic evaluation. Applications of the program are also presented.

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