Design and Assessment of Seismic Resilient Structures by the Endurance Time Method

A framework to calculate a quantitative measure of seismic resilience using the Endurance Time (ET) method is introduced. ET method is a response-history based analysis procedure where structures are subjected to gradually intensifying dynamic excitations and their performance is assessed based on their response at different excitation levels, reducing the required computational effort. First, a prototype hospital building is optimally designed through three distinct design philosophies: Prescriptive design code, Performance based design criteria and Value based seismic design method. In value based design method the design sections of structural elements are assumed as optimization parameters and a design with minimum total cost during its life span is being sought. For each candidate design the damages due to probable earthquakes is estimated by the ET method and the expected cost of damages is calculated using Life Cycle Cost Analysis (LCCA). Next, the resilience of each design in continuous range of hazard intensities are compared introducing “Resilience Curve”. Although the optimization objectives in design process are not based on resiliency measures, the value based design showed the best resiliency in the case of seismic hazards. This methodology and potential benefits when considering the need for moving towards more resilient cities is discussed.

[1]  Manolis Papadrakakis,et al.  Building design based on energy dissipation: a critical assessment , 2010 .

[2]  Siambabala Bernard Manyena,et al.  The concept of resilience revisited. , 2006, Disasters.

[3]  Homayoon E. Estekanchi,et al.  Application of Endurance Time method in linear seismic analysis , 2007 .

[4]  M. Sadeghazar.  Endurance Time Method for Seismic Analysis and Design of Structures , 2004 .

[5]  Y. K. Wen,et al.  Minimum Building Life-Cycle Cost Design Criteria. I: Methodology , 2001 .

[6]  Stephanie E. Chang,et al.  Measuring Improvements in the Disaster Resilience of Communities , 2004 .

[7]  Homayoon E. Estekanchi,et al.  Application of endurance time method in performance-based optimum design of structures , 2015 .

[8]  Homayoon E. Estekanchi,et al.  Improved methodology for endurance time analysis: From time to seismic hazard return period , 2012 .

[9]  Michel Bruneau,et al.  Exploring the Concept of Seismic Resilience for Acute Care Facilities , 2007 .

[10]  Homayoon E. Estekanchi,et al.  APPLICATION OF ENDURANCE TIME METHOD IN PERFORMANCE-BASED DESIGN OF STEEL MOMENT FRAMES , 2010 .

[11]  Homayoon E. Estekanchi,et al.  A METHODOLOGY FOR VALUE BASED SEISMIC DESIGN OF STRUCTURES by the ENDURANCE TIME METHOD , 2016 .

[12]  Michel Bruneau,et al.  A Framework to Quantitatively Assess and Enhance the Seismic Resilience of Communities , 2003 .

[13]  Homayoon E. Estekanchi,et al.  Performance-Based Seismic Retrofitting of Steel Frames by the Endurance Time Method , 2015 .

[14]  Michel Bruneau,et al.  Framework for analytical quantification of disaster resilience , 2010 .

[15]  K Meskouris,et al.  Correlation study between seismic acceleration parameters and damage indices of structures , 2001 .