Structural vulnerability analysis of civil infrastructure facing seismic hazards - Seismic Risk Analysis and Management of Civil Infrastructure Systems - page 220

Table 8.2 Assessment of structural risk for Example 2

Linguistic
assessment
of damage
to members

Likelihood
of the
action (on
1-5 scale)

Accumulated
support for
likelihood of
the scenario

Confi dence
level in the
assessment

Corresponding
support
interval

Relative
importance
of action

Normalized
support
interval

Vulnerability
Index

Structural
Risk

Action

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k)

Max FS:
Pin m2
or m6

Gravity
load

Very little High [0.0, 0.22] High 4 0.267 [0.0, 0.059]

Wind load Some High [0.35, 0.63] High 4 0.267 [0.093, 0.168]

Fire Some Moderate [0.34, 0.66] Low 2 0.133 [0.045, 0.088]

Explosion Considerable Moderate [0.74, 1.0] Very low 1 0.067 [0.050, 0.067]

Corrosion Little Moderate [0.13, 0.45] Very low 1 0.067 [0.009, 0.030]

Accidental Some Low [0.3, 0.67] Medium 3 0.200 [0.06, 0.134]

[0.257, 0.546] 52.8 [13.6, 28.8]

Min FS:
Pin
m19 or
m20 or
m21

Dead load Very little High [0.0, 0.22] High 4 0.267 [0.0, 0.059]

Wind load Very little High [0.0, 0.22] High 4 0.267 [0.0, 0.059]

Fire Some Moderate [0.34, 0.66] Low 2 0.133 [0.045, 0.088]

Explosion Some Moderate [0.34, 0.66] Very low 1 0.067 [0.023, 0.044]

Corrosion Little Moderate [0.13, 0.45] Very low 1 0.067 [0.009, 0.030]

Accidental Little Moderate [0.13, 0.45] Medium 3 0.200 [0.026, 0.090]

[0.103, 0.370] 7.5 [0.8, 2.8]

Specifi c
FS: Pin
m10

Dead load Very little High [0.0, 0.22] High 4 0.267 [0.00, 0.059]

Wind load Little High [0.15, 0.42] High 4 0.267 [0.040, 0.112]

Fire Some Moderate [0.34, 0.66] Low 2 0.133 [0.045, 0.088]

Explosion Some Moderate [0.34, 0.66] Very low 1 0.067 [0.023, 0.044]

Corrosion Little Moderate [0.13, 0.45] Very low 1 0.067 [0.009, 0.030]

Accidental Some Low [0.3, 0.67] Medium 3 0.200 [0.060, 0.134]

[0.177, 0.467] 30.2 [5.3, 14.1]