Earthquake Repairs Safety in Design Considerations Mark Humphery - - PowerPoint PPT Presentation

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Earthquake Repairs Safety in Design Considerations Mark Humphery - - PowerPoint PPT Presentation

Apr 13, 2023 123 likes •299 views

New Brighton Pier Earthquake Repairs Safety in Design Considerations Mark Humphery Senior Structural Engineer CCC Facilities & Structures Team Christchurch City Council 1 New Brighton Pier L I B R A R Y Christchurch City Council

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SLIDE 1

Christchurch City Council

New Brighton Pier Earthquake Repairs

Safety in Design Considerations

Mark Humphery Senior Structural Engineer CCC Facilities & Structures Team

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SLIDE 2

Christchurch City Council

New Brighton Pier

L I B R A R Y

1

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SLIDE 3

Christchurch City Council

February 2011 Earthquake 2

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SLIDE 4

Christchurch City Council

February 2016 Earthquake 3

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SLIDE 5

Christchurch City Council

EQ Damage

  • Loss of Seismic Strength
  • Corrosion of reinforcement
  • Settlement of column #4

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SLIDE 6

Christchurch City Council

Repair Aims

1. Re-instate Pier to its Pre-Earthquake Condition 2. Repairs must be SIMPLE to construct 3. Repairs must be SAFE to install 4. Repairs must reinstate DURABILITY 5. Repairs must be COST effective

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SLIDE 7

Christchurch City Council

Critical Safety Issues

  • Working in marine environment
  • Very difficult conditions for divers
  • Safety of the public
  • Reduced seismic capacity and limited live load capacity of pier deck
  • Deep excavations below sea bed/beach level
  • Unique construction methodology for NZ

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SLIDE 8

Christchurch City Council

Design Solution 7

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SLIDE 9

Christchurch City Council

Contractor Selection 8

  • Expression of Interest (6 Contractors)
  • Evaluation & Selection (3 Contractors)
  • Payment for Detailed Methodology (3 Contractors)
  • Evaluation and Award (1 Contractor) – Fulton Hogan
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SLIDE 10

Christchurch City Council

Methodology 9

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SLIDE 11

Christchurch City Council

Construction Issues 10

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SLIDE 12

Christchurch City Council

Construction Safety 11

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SLIDE 13

Christchurch City Council

Providing a controlled environment 12

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SLIDE 14

Christchurch City Council

Flyby of Pier during Construction 13

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SLIDE 15

Christchurch City Council

What worked Well? 14

  • Plan ahead
  • Collaborative relationships throughout
  • Focus on safety from initial concept
  • Keep reviewing safety as works progress
  • Allow inclement weather days
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SLIDE 16

Christchurch City Council

Project H&S Stats 15

As of April 2018

  • Man Hours = 32835
  • Incidents = 4
  • LTI’s = 0
  • Medical Treatment

Injuries = 4

  • Near Misses = 11
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SLIDE 17

Christchurch City Council

Any Questions? 16