Seismic vulnerability analysis of a complex interconnected civil infrastructure - Seismic Risk Analysis and Management of Civil Infrastructure Systems - page 462

Legend

G eneralisatio n

Analysis Environment

Class

Composition
Association

Group of
classes

Infrastructure

Weather Hazard

Natural

Network CriticalFacility

ManMade

InhabitedArea

Network
classes

Network

Directed

Natural Source

PointSource

FiniteFault

RWN RDN

Seismic Event

Undirected

LocalIntensity

Amplification

Seismic
hazard
classes

EPN WSS

GMPE GeotechHazards OIL

GAS WWS

18.2 The high-level class diagram of the OO model. In accordance
with the UML standard, the names of abstract classes are in italic.

and Gas transmission and distribution networks ( OIL , GAS ), Water Supply
System ( WSS ), Waste Water System ( WWS ).
The implemented EPN , WSS and RDN classes allow capacitive (fl ow)
analysis on the respective networks (Vanzi, 1996; Wang et al. , 2010; see also
Chapter 24). They include fragility models for vulnerable components
(pipes, pumps, transmission and distribution stations, etc.) and direct physi-
cal interaction to model cascading failures (Dueñas-Osorio and Vemur,
2009). The Seismic class and sub-classes implement a distributed seismic
hazard model that accounts for the spatial correlation among intensity
measures (IMs) at different sites (Jayaram and Baker, 2009) (see also
Chapter 3), as well as for the probabilistic dependence between different
intensity measures at the same site (Baker and Cornell, 2006; Bazzurro and
Cornell, 2002). Further, the model can predict the full spectrum of IMs
needed in a vulnerability study of an infrastructure, from ground shaking
to geotechnical hazards (see Section 18.5.4).