Civil Engineering Reference
In-Depth Information
Resilience at finished work
100
90
80
70
60
50
40
30
20
10
0
1
2
3
4
Community
functionality
Community
resilience
100
100
100
58
92
88
81
58
Cases
Recovery function
105
100
95
90
85
80
Case I
Case II
Case III
Case IV
75
70
65
60
55
-60
0
60
120
180 240
300 360
Times [days]
420 480 540 600 660 720
11.16
Resilience vs functionality for different scenario events.
Buildings and districts inside the Island have zero functionality, because
with the collapse of the bridges the entire Island is not accessible - so all
building units and roads are unusable. The functionality curves of the physi-
cal infrastructure dimension are plotted in Fig. 11.18b. The global function-
ality
Q
Ph
has been evaluated with equal weight coeffi cients for the road
network and the housing units. At the 40th day, when there is the recovery
of the fi rst bridge that connects the Island with the mainland, the global
functionality curve of the physical infrastructure dimension has a gap,
because the roads and the building units can be reused and repaired. The
recovery time
T
EW
of the selected community is equal to 3.19 years; while
the resilience indices are 74.34% and 97.52% for buildings and road
network, respectively, while the global resilience index combining both
buildings and road network is 85.93% when equal weight is given to both
systems.
Search WWH ::
Custom Search