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Introduction to Seismic Essentials in Groningen
3.1
Seismic Design Concepts
Capacity Design Philosophy
Timurhan Timur MSc PhD - Arup
Introduction to Seismic Essentials in Groningen Seismic Design - - PowerPoint PPT Presentation
Introduction to Seismic Essentials in Groningen Seismic Design - - PowerPoint PPT Presentation
Introduction to Seismic Essentials in Groningen Seismic Design Concepts 3.1 Capacity Design Philosophy Timurhan Timur MSc PhD - Arup Design Philosophy A term used for the fundamental basis of design Selection or identification of design loads
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Design Philosophy
A term used for the fundamental basis of design Selection or identification of design loads Analytical techniques Design procedures Structural configuration Extent of economic optimization
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Strength-based Design Philosophy
Gravity Load Wind Load
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Strength-based Design Philosophy
Displacement within elastic region
Displacement Force
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Force Displacement Yielding structure Elastic structure
Strength-based vs. Reality
Strength-based design philosophy not viable under earthquake conditions Structures are subjected to cyclic loads
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Ductility
Base Shear Lateral displacement Force Lateral displacement Elastic range Inelastic range
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Brittle behaviour Ductile behaviour Adequate warning (by deformations and cracks No warning (by sudden collapse) Shear failure Bending failure
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Ductility
Base Shear Lateral displacement Force Lateral displacement Elastic range Inelastic range
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Capacity Design Philosophy
Structural response often exceeds elastic range Damage is therefore expected Control damage by selecting proper lateral load resisting systems and proper detailing of individual members
Ductile link
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Ductility
Base Shear Lateral Displacement Yield point Failure Structure A Failure Structure B Large inelastic deformation Elastic range Inelastic range
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Thank you for your attention!
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3.1
References and further reading
Elnashai, A.S. and Di Sarno, L. (2008). Fundamentals of Earthquake
- Engineering. Published by John Wiley & Sons.
Paulay, T. and Priestley, M.J (1992). Seismic Design of Reinforced Concrete and Masonry Buildings. Published by John Wiley & Sons. EN 1998 - Eurocode 8 (2004-2005). Design of structures for earthquake resistance - Part 1: General rules, seismic Actions and rules for buildings - Part 3: Assessment and retrofit of buildings and Part 5: Foundations, retaining structures and geotechnical aspects. Published by CEN/CENELEC, Brussels.