We look back to Breakwaters 2013 and a Mouchel presentation on increased terminal capacity through modification of existing breakwater

1. 0
ICE Coasts, Marine Structures and Breakwaters 2013
19 September 2013
Laure Herbert
Senior Engineer, Mouchel Maritime
Puerto Caucedo Multimodal Terminal,
– Increased Terminal Capacity Through
Modification of Existing Breakwater

2. 1
Contents
1. Introduction
2. Phase 2 Project Overview
3. Concept Stage Marine/Onshore Works
4. Risk Management
5. Conclusion

3. 2
1. Introduction - Location
Puerto Caucedo

4. 3
1. Introduction – Existing, Terminal Phase 1
• 600m Berth for Post Panamax
• 40 Hectares Container Yard
• 900m Breakwater
• Water Depths up to 20m
• 10m Design Wave Height
100m
Football Pitch

5. 4
2. Phase 2 – Overview
Phase 2 Works:
• US$30m
• 300m Berth for Panamax
• Tug Berth
• RoRo Berth
• Access & Stacking Area

6. 5
3. Concept Stage – Marine & Onshore Works
• Key Activity;
• Development Workshop;
• Operational Requirements;
• Design Constraints & Considerations;
• Procurement Strategy & Risk Register;

7. 6
3. Concept – Marine Works
Navigation Review:
• Vessel Manoeuvring;
• Dredged Depth.
Design Vessel Criteria: LOA = 220m; Draft = 11m
-14.5mDRD
EXISTING DEPTH
-12.5mDRD
-13.5mDRD
DREDGED BOX
-15.0mDRD
N
MINIMUM
PERMISSIBLE
EXISTING BERTH
NEW BERTH
NEW RORO
NEW TUG BERTH

8. 7
3. Concept – Marine Works
Quay Wall Considerations
i - Structure & Maintenance:
• Disturbance to existing breakwater;
• Backfill Requirements;
• Ground Conditions;
• Maintenance;
ii – Construction:
• Speed of Construction;
• Constructability;
• Materials;

9. 8
3. Concept – Marine Works
- Combi Wall Concept Design
• Front wall: anchored tubular piles, tubular piles & sheet piles
• Anchor wall: sheet piles anchored within rubble mound breakwater
Basin
Seaward
Anchor Wall
Front Wall
Tug
Berth
RoRo Ramp
APPROX 50mAPPROX 26m
NEW BERTH
APPROX 40m
PORT SIDE SEA SIDE
DREDGED
LEVEL
-12.5mDRD
MATERIAL
FROM
DREDGING
-19.0mDRD
16m3 ACCROPODES
BREAKWATER

10. 9
3. Concept - Onshore Works
- Operational Requirements;
- Conversion of existing breakwater crest:
i. Container Stacking Area
ii. Handling Operations
iii. Services/Welfare
iv. Access
- Separate Contracts

11. 10
4. Risk & Key Issue Management in Contract
FEASIBILITY
IN OPERATION
CONSTRUCTION
Navigation
Access
Container Traffic
Hurricane
(Wave and Wind)
Interface with operations
Ground Conditions
Operational Requirements Programme
Quality

12. 11
4. Risk Management – Ground Conditions
Feasibility Stage:
i. Constraints: Highly Variable/Voided/Brittle Ground, High seismic design loading;
ii. Design Approach: Extensive sensitivity testing/Robust design;
iii. Recommendations:
- Additional ground investigation;
- Seismic hazard study update;
- Rigorous design requirements in D&B documents;
In Contract:
i. Independent Design Analysis;
ii. Localised variability of bed material;
iii. Design adjusted.

13. 12
4. Impact on Operations: Hurricane: Overtopping & Wind
Manage risk during construction and operations
i. Shut Down Risk Assessment;
ii. Mitigation Measures;
iii. Physical Modelling Review;
iv. Emergency Plan
OPERATING
AREA
1.2m
1.5m

14. 13
4. Risk Management – Interface with operations
Constraints:
i. Port operates 24/7 and continuously;
ii. Disruptions to be fundamentally avoided;
iii. 4 contracts occurring simultaneously during construction period;
Mitigation Measures:
i. Close working relationships;
ii. Weekly lookahead liaison meetings;
iii. Barge manoeuvres controlled by Harbour Master;
iv. Programme reviewed frequently and included extensive contingency
planning to accommodate the threat of hurricanes;

15. 14
5. Lessons Learnt
i. The project benefited from the Phase 1 experience in terms of:
• Design practicalities and knowledge of the local environment and port operations;
• Well established communication channels between the port’s staff and Mouchel.
ii. Concept/Feasibility Stages:
• Define operational requirements,
• Understand existing port operations,
• Identify key issues.
iii. Early Contractor Involvement and Contractor’s design independent analysis;
iv. Clear lines of communication between all parties

16. 15
THANK YOU

17. 16