Resilience-based design (RBD) modelling of civil infrastructure to assess seismic hazards - Seismic Risk Analysis and Management of Civil Infrastructure Systems - page 289

Accepted downtime required by the public

300

1 Immediate
2 Within an hour
3 Within 3 hours
4 Within half day
5 Within a day
6 Within 3 days
7 Within a week
8 Within a month
9 Within 3 months
10 Within a half year
11 Within a year
12 Others

250

200

150

100

50

0

0 123456789 0 1 2

Answers

(a)

Accepted seismic performance goals evaluated
by the public

500

1 Bridges should not
collapse although extensive
damage should happen
2 Bridges should be
repaired shortly after
an earthquake
3 Bridge should be used
immediately after an
earthquake
4 Bridge should be safe no
matter how cost increases

400

300

200

100

0

1 2 3 4

Answers

(b)

11.12 Survey results on the acceptable recovery process.

Recovery time

Short term
(emergency)

Long term
(reconstruction)

Mid-term

Fully
operational
(Q1)

Basic
objective

Unacce-
ptable

Unacce-
ptable

Essential
objective

Basic
objective

Unacce-
ptable

Operational
(Q2)

Partially
operational
(Q3)

Critical
objective

Essential
objective

Basic
objective

Performance
objective

Near not
operational
(Q4)

Not
teasible

Critical
objective

Basic
objective

Recovery time ( T RE )

11.13 Three-dimensional resilience performance objectives matrix for
structures, communities, systems, etc.