Spring 2019

ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

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ASPIRE Spring 2019 | 11 damage for a broad class of buildings, we can efficiently generate fragility curves of the damage to different elements of specific building designs. Fragility curves for specific building designs give stakeholders a more detailed and quantitative understanding of building damage for proposed mitigation solutions. By integrating hazard and fragility curves, we can create a comprehensive damage model that assesses potential damage from hazards of different intensities. When we assign costs to these damages and add them to the normal lifetime maintenance and construction costs of a structure as part of a life-cycle cost analysis, we can determine whether investments in resilience will prove cost effective over a structure's life when compared to conventional designs. Our research has shown that the value of hazard resistance can be quantified a n d t h a t i n v e s t m e n t s i n h a z a rd mitigation can pay off, particularly i n l o c a t i o n s w h e re h a z a rd re p a i r costs approach the value of initial construction costs. Within expectation of sustainable infrastructure, such resilience analyses for structures, including bridges, are critical. It is essential that we create a culture of resilience by educating stakeholders that quantitative resilience assessments a r e p o s s i b l e a n d n e c e s s a r y f o r infrastructure. Bridge engineers are well positioned to carry this mantle. References 1. Bressan, D. 2018. "How the 1964 Good Friday earthquake helped Anchorage withstand last Friday's quake." Forbes. December 4, 2018. h t t p s : / / w w w. f o r b e s . c o m / s i t e s / d a v i d b re s s a n / 2 0 1 8 / 1 2 / 0 4 / h o w - the-1964-good-friday-earthquake- helped-anchorage-withstand-last- fridays-quake/#5dfd42503a98. 2. Griggs, M.B. 2018. "How Alaska fixed its earthquake-shattered roads in just days." The Verge website. December 8, 2018. https://www. a l a s k a - e a r t h q u a k e - ro a d s - f i x e d - anchorage-damage. 3. Taylor, A. 2014. "1964: Alaska's G o o d F r i d a y e a r t h q u a k e " T h e A t l a n t i c . M a y 3 0 , 2 0 1 4 . h t t p s : / / w w w. t h e a t l a n t i c . c o m / photo/2014/05/1964-alaskas-good- friday-earthquake/100746. Figure 2. A generic hazard curve. Figure 3. A generic fragility curve.

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