Environmental Engineering Reference
In-Depth Information
Chapter 16
Resilience and Vulnerability Analysis
for Restoration After Tsunamis and Floods:
The Case of Dwellings and Industrial Plants
Ahmed Mebarki and Bruno Barroca
Abstract
The resilience approach represents a unified and integrated framework
for the restoration process following disasters. Under given resilience parameters
values, a resilient system is able to recover and be strengthened within a defined
recovery period; otherwise, it is a non-resilient system. This chapter considers dif-
ferent structures and focuses on several parameters which govern resilience together
with their mechanical vulnerability under various hazards. A new method of theo-
retically measuring resilience, its link with mechanical vulnerability, and its sensi-
tivity analysis are investigated for dwellings and industrial plants under the effects
of flood and tsunami hazards:
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Non-designed (informal) masonry constructions under the effects of a flooding
hazard: vulnerability is estimated after a rapid inspection by qualified engineers.
Fragility curves are developed and the structural failure risk is calculated and
mapped depending on the intensity of the hazard: water height and flow velocity,
in a real case.
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Structural and non-structural waste generated by flooding: relevant models are
adopted and used for predicting expected quantities of waste. The territory may
take several years to recover since generated waste may represent several times
annual quantities produced under normal circumstances.
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Coastal industrial plants under the effects of a tsunami hazard: structural failure
in tanks results from buoyancy (uplift), overturning, sliding by shear effect,
excessive bending, or buckling. Vulnerability and fragility curves are developed
for various tanks of small and large sizes.
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