Henning Roedel Civil and Environmental Engineering Department Stanford University November 25, 2008
Dec 30, 2015
Henning Roedel
Civil and Environmental Engineering Department
Stanford University
November 25, 2008
Overview of Presentation
1. Site Identification
2. Conceptual Design Alternatives
3. Schematic Design
4. Incorporation into Overall Project
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Site IdentificationPort Locations
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Bremenports: A Unique Scenario
Protection of ports is only part of the larger issue due to sea level rise and climate change
Much of the German coastline is affected
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Site IdentificationBremenport Economics
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69 Million Tons of Cargo – 25% of total German shipping tonnage
112% Tonnage Increase Projected by 2025
Currently 5 Million TEU – Projected Increase from 7-14 Million by 2025
Major Items Handled: Vehicles, Ores, Steel
Site Identification
Floods and Storms
Bremen – Located on the banks of the Weser River, subject to flooding
Bremerhaven – Located at the mouth of the Weser and on the North Sea, subject to flooding by both
Greater risks come from theNorth Sea
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Vulnerability1m SLR with 1995 Data
Storm flood event probability will increase from 1:100 in most cases to 1:10 and in some 1:1Design based on 100-year return period events
Assets Affected – DM 151 Billion Population Affected – 631,000 people
(92% of population) Area Affected – 323km2
(80% of total area)
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Conceptual Design Alternatives
Design Criteria – Flooding due to SLR
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Conceptual Design AlternativesOptions 1 & 2 Conceptual designs
Combination of wet-wet and wet-dry dikes with locks
Dredging would become issue due to sedimentation buildup, potential need for additional dredging ships
Another design would include sea walls along existing facilities with similar wet-dry dikes
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Conceptual Design AlternativesDesign considered - Bremerhaven
Followed roads, and protected port facilities based on flood map
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Conceptual Design AlternativesDesign considered - Bremen
Followed roads, and protected port facilities based on flood map
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Conceptual Design AlternativesOption 3 Current General Plan from Bremen and Lower SaxonyIncrease dike
heights by 25cm, to be complete by 2017
Revisit plan every 20 years
Building codes might consider 1m SLR for future protection
12Source Meeresspiegelanstieg.pdf – Used with Permission from Uwe von Bargen
Red = Build outBlack = Follows Requirements of General Plan
Conceptual Design AlternativesExisting Structures
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North Dike
Storm Quay with wave calming design
North Lock
High Water Protection WallsMain Lock
Lohmann DikeSport boat Lock
Weser River Dike
Storm Flood Barrier
Fishery Lock
Sea Dike
Dike Line ~15 kmProtected Area ~5330ha
Source Meeresspiegelanstieg.pdf – Used with Permission from Uwe von Bargen
Conceptual Design AlternativesRetention Basin Development
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Flood Gate
Tidal Power Generation Plant
Area Subject to Tidal Flooding (220ha)
Farm Land (240ha)
Outside Area “Old Weser” 140ha
Source Meeresspiegelanstieg.pdf – Used with Permission from Uwe von Bargen
Conceptual Design Alternatives
Expected Costs: Bremen and Lower
Saxony~85 Million €/year until
2017
Germany~160 Million €/year until
2017
Netherlands Comparison
2 Billion €/year until 2050
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Schematic Design
Design elementsDike and Lock System
MaterialsConcrete, Structural Fill, Riprap, Pumps
EquipmentDredging, Heavy Earthwork
Time and CostBremerhaven – 3 years 6 months, $2.39BBremen – 11 months, $597M
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Schematic Design
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Schematic Design
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Schematic Design
Impacts on port operations, ecology, geology, hydrology, society, etc. Based on design, the Weser River would
dump into the North Sea at the City of Bremen
Design limitations and next stepsRedefine minimum “credible” design
standards for low lying areasThe Germans are already looking into the
situation, lets work with them to learn what they are doing
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Incorporation of Results into Overall Project
Recommend future effort on Germany case studyHelp define issues with our port protectorWhy are the Germans and Long Beach
assuming only 1m Sea Level Rise? Begin Addressing Resource Constraints
Contact Germany and receive estimate on resource consumption
Compare with Netherlands project
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