Masterplan Scheldt Quays Antwerp

Transcription

1 Smart Rivers 2011 September 13-16, 2011 Westin Canal Place New Orleans, Loisiana, USA Masterplan Scheldt Quays Antwerp Symbiosis of updated safety infrastructure, quay wall renovation and new public domain

2 Agenda Introduction Integrated approach / Technical - Quay wall renovation - Update Water barrier 2-9/21/2011

3 Introduction Flemish government Department mobility & public services W&Z: independent agency 3-9/21/2011

4 Introduction 4-9/21/2011

5 Introduction 5-9/21/2011

6 Introduction 6-9/21/2011

7 Introduction What is a Masterplan? Public Public collaboration Financial plan Technical study Cultural and archeological study Mobility Spatial planning Participation / Communication plan GUIDE 7-9/21/2011

8 History Quay wall Length : 5.5 km / 3.42 miles - Height : 18 m / 59 feet - First port activities 8-9/21/2011

9 Screening Renovation of Quay Wall Instability problems : - Clay foundation (Boom) - Bad quality building materials - 9 Type sections (General cross-section: gravity wall in brickwork construction, built upon steel caisson filled with concrete) - Flexible stabilisation methodology - Priority list 9-9/21/2011

10 Masterplan - Technical Historical Quay Wall 1. Monitoring movement - Inclinometers 2. Groundwater level vs. Scheldt water level - Monitoring wells Divers 3. Bathymetric survey - Prop box 4. Core Drilling - Physical state 5. Visual inspection 6. Diver inspection 10-9/21/2011

11 Masterplan - Technical Risk analysis 1. Calculations stability - Overall stability - Rotational failure - Sliding - Bearing resistance 2. Safety factors for different bearing load combinations - Frequent and rare - Accidental 3. Load combinations - Groundwater levels - Tide levels - Upper load - Foundation layer - Wave load - Ship load 11-9/21/2011

12 Masterplan - Technical Tailored renovation Cost efficiency Technical assessment of 37 renovation varieties 21 varieties technically feasible VHP grouting/injection Anchors Excavation Discharging Floor with straight piles New Quay wall Light material/drain/underground Discharging Floor with inclined piles 12-9/21/2011

13 Masterplan - Technical Renovation of Quay Wall 13-9/21/2011

14 History Water barier First Sigmaplan Length : 5.5 km / 3.42 miles - Height : 1.35 m / 4.43 feet 14-9/21/2011

15 Update Sigmaplan Flanders : 10.5 milj inhabitants Update Changing boundary conditions - stronger tidal cycles - climate change 2. New vision on design criteria - design water levels - cost benefit analysis 3. New vision on water management - sustainable development is central theme - transnational estuary management (NL-FL) 15-9/21/2011

16 Update Sigmaplan Flanders Floodmapping - FHR 16-9/21/2011

17 Update Sigmaplan Flanders Update Rural area - FCA - dike heightening 2. Urban area - barrier heightening Scheldt Quay Antwerp 17-9/21/2011

18 Update Sigmaplan Flanders New level water barrier : 2.25 m / 7,38 feet 18-9/21/2011

19 Integrated Sigmaplan New and Safe public domain 1. Restore ancient connection Antwerp- Scheldt 2. Attractive place 3. Improve accessibility 4. Respect maritime history 19-9/21/2011

20 Masterplan - Technical Water barrier Solutions Spacial variation 1. Fixed water barrier - Dike - Building - Heightening ground level - Urban furniture - Park 2. Mobile water barrier - Increase spacial quality - Safety access to quays - Risk analysis required 20-9/21/2011

21 Masterplan - Technical Mobile water barrier Risk analysis 1. Failure water barrier Fixed water barrier: Environmental conditions Construction strength Mobile water barrier: Environmental conditions Construction strength Closing procedure 2. Urban context : 0 risk increase - Boundary conditions need to be set - volume inflowing water < acceptable volume - Stock capacity - Overflow depth 21-9/21/2011

22 Masterplan - Technical Mobile water barrier Risk analysis - Dike approach (1 segment) - Height barrier (Sigmaplan) - Reliability closing procedure - Construction strength and stability (Eurocode) TAW Guideline - Overflow approach (Several segments) - Stock capacity - Overflow depth Masterplan Scheldt Quays - Max. acceptable volume - Height barrier - Probability of storm surge occurance - Fixed treshold - Maximum length 22-9/21/2011

23 Masterplan - Technical Mobile water barrier Risk analysis -Total length mobile barrier ca. 850 m / 0,5 mile - Fixed treshold 0.80 m / 2,62 feet 23-9/21/2011

24 Masterplan - Technical Mobile water barrier Selection 24-9/21/2011

25 Masterplan Challenging strategy creating a Masterplan Water Barrier Quay Wall Public Domain Masterplan Scheldt Quays Antwerp /21/2011

26 Smart Rivers 2011 September 13-16, 2011 Westin Canal Place New Orleans, Loisiana, USA Thank you ing. Koen Segher