PIANC Seismic Design Guidelines for Port Structures

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PIANC Seismic Design Guidelines for Port
Structures

• International Guidelines by PIANC
• WG members from 11 countries
• Seismic performance-based design
• Analysis methods

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Performance-based design

• Acceptable damage level
• I Serviceable
• II Repairable
• III Near Collapse
• IV Collapse
• Earthquake motion level
• Level 1
• Level 2
• Performance grade
• S, A, B, C

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Acceptable level of damage
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Performance grades S, A, B, and C
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Performance-based design

• Choose performance grade Owners/users
• Define damage criteria Engineers
  Owners/users
• Evaluate seismic performance Engineers

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Performance-based design

• Damage criteria
• Failure mode
• Displacement
• Strain

• Analysis type
• Simplified analysis
• Simplified dynamic analysis
• Dynamic analysis
• Input
• Earthquake motions
• Geotechnical conditions
• Proposed design or existing structures
• Output
• Displacement
• Strain

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Types of Analysis

• Simplified analysis
• Appropriate for evaluating approximate threshold
  level and/or elastic limit
• Simplified dynamic analysis
• Possible to evaluate extent of displacement/
  stress/strain based on assumed failure modes
• Dynamic analysis
• Possible to evaluate both failure modes and
  extent of displacement/stress/strain

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Choice of analysis types

• Earthquake motion level
• Geotechnical conditions
• Structural conditions
• Analysis stage
• Performance grade

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Types of analysis related to performance grade
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PIANC Seismic Design Guidelines for Port
Structures

• PublishedSeptember, 2001, Balkema
• Sponsor Coastal Development Institute of
  Technology, Japan
• PIANC Seminars
• Tokyo, December 10, 2001
• London, October 30, 2002
• Long Beach or Auckland