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
2 February 2011 Earthquake Christchurch City Council
3 February 2016 Earthquake Christchurch City Council
4 EQ Damage - Loss of Seismic Strength - Corrosion of reinforcement - Settlement of column #4 Christchurch City Council
5 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 Christchurch City Council
6 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 Christchurch City Council
7 Design Solution Christchurch City Council
8 Contractor Selection • Expression of Interest (6 Contractors) • Evaluation & Selection (3 Contractors) • Payment for Detailed Methodology (3 Contractors) • Evaluation and Award (1 Contractor) – Fulton Hogan Christchurch City Council
9 Methodology Christchurch City Council
10 Construction Issues Christchurch City Council
11 Construction Safety Christchurch City Council
12 Providing a controlled environment Christchurch City Council
13 Flyby of Pier during Construction Christchurch City Council
14 What worked Well? • Plan ahead • Collaborative relationships throughout • Focus on safety from initial concept • Keep reviewing safety as works progress • Allow inclement weather days Christchurch City Council
15 Project H&S Stats As of April 2018 - Man Hours = 32835 - Incidents = 4 LTI’s = 0 - - Medical Treatment Injuries = 4 - Near Misses = 11 Christchurch City Council
16 Any Questions? Christchurch City Council
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