Seine-Scheldt connection & the vessels classification

Transcription

1 THE RIVER LEIE COMMISSIONER: WATERWEGEN EN ZEEKANAAL NV CONTRACTOR: TV LEIE DOORTOCHT KORTRIJK COST PRICE: +/ REALISATION: The current widening works to the Leie are part of the Seine-Scheldt connection, which must connect the North Sea ports with the basin of Paris and Le Havre. Currently the passage of Kortrijk is navigable for ships of 300 tons (class I) and - if alternating in one direction - also for ships of 800 tons (class II) and 70m long. Following the work, ships of 1,350 tons (class IV) and with alternating sailing even up to 4,400 tons, :such as push barges of 185 m long and container ships with three layers of containers (class Vb), will be able to sail through Kortrijk. Seine-Scheldt connection & the vessels classification 1

2 In order to achieve this, three bottlenecks must be resolved: the Leie should be widened from 20 to 32 metres the bends in the river are too sharp. The river should become much more straight with bend radii of at least 550m the clearance height under the bridges should increase from the current 4,20m to 7m in the future. When handling a maximum slope of 5% for cyclists and pedestrians, such an increase means a small 60 metre longer ramp on both sides of the bridge. Fitting such bridges in the existing urban framework is then also no sinecure. On the historical axis of Buda street- Overleie street, this is altogether impossible and a mobile bridge is chosen. Overall view of the work 2

3 overall view on the works on the river Leie overview of the expropriations 3

4 THE RIVER LEIE 1. Dambridge DESIGNERS: SUM (former Groep Planning), Brugge (B) CONTRACTOR: TV LEIE DOORTOCHT KORTRIJK REALISATION: TYPE: concrete girder bridge SPAN: 34 m Contrary to the former Dambridge, the new bridge is situated on the Old Leie branch. The bridge links the Buda island to the inner-city. Following the location on the Old Leie arm, the clearance height under the bridge don t have to be 7 m. Only pleasure boats have to pass. So, long access slopes aren t necessary. A cycle path passes under the bridge. Special attention has been given to the slanting piers, which give space and air to the cycle path. the slanting piers give air to the cycle path 4

5 the new Dambridge over the Old Leie arm 5

6 THE RIVER LEIE 2. Groeningebridge DESIGNERS: SUM (former Groep Planning), Brugge (B) CONTRACTOR: TV LEIE DOORTOCHT KORTRIJK REALISATION: TYPE: LENGHT: WEIGHT: steel girder bridge with concrete deck 125 m kg the Groeningebridge The Groeningebridge is part of the city ring around Kortrijk and runs across Albert Park. The direct connections of the quays to the bridge are redirected to two roundabouts at the foot of the bridge. The abutments of the bridge are pulled back as far as possible and cut away. The entire area is excavated in a shell shape to the water. This creates a wide passage under the bridge: one park on both sides of the water, with the river that flows through the middle of the park. 6

7 the entire area is excavated in a shell shape to the water details of the Groeningbridge The cycle and pedestrian paths are separated from the car lanes and made of wooden slats, with integrated coloured anti-slip strips. The insertion of the lighting in the railing provides a special atmosphere at night. Much attention is given to the diamond shaped piers. 7

8 cycle and pedestrian paths made of wooden slats, with integrated coloured anti-slip strips 8

9 THE RIVER LEIE 3. King Albert park DESIGNERS: SUM (former Groep Planning), Brugge (B) DIRK VANDEKERCKHOVE? Mariakerke (B) CONTRACTOR: TV LEIE DOORTOCHT KORTRIJK REALISATION: Photography Gerald Van Rafelgehem, Copyright 2006 Stad Kortrijk the King Albert park To the level of King Albert Park, aligning the Leie results in the disappearance of a 1/3 of the original park. In addition the Groeninge bridge is so distinguished that the risk exists that the park will be experienced as residual green. Conceptually, the park was chosen to give shape to the water as a shell. The river does not form a border, but is located in the middle of the park. By pulling back the bridge heads and also leading the traffic flows to the edge of the park, a substantial green area is created. Visually the park runs under the bridge. The construction of the park is, similar to the Diksmuide Quay, deliberately kept plain. The enhanced openness strengthens the feeling of scale that is introduced by the new Leie. 9

10 evolution of the shape of the King Albert Park Through the stacked walls in schist slate level differences are created. This creates terraces in the park that are useful to absorb permanent ground level heights (for example Tree drip-lines). The footpaths are led along these stacked walls and wind through the park. The winding motion makes it possible to minimise the slope, which makes the paths easy to use for pedestrians and disabled persons. Besides the large solitary trees (Caucasian Wing nut), no additional planting was introduced. The absence of shrubs provides vistas, which once again emphasises the openness and scale of the space. Photography Gerald Van Rafelgehem, Copyright 2006 Stad Kortrijk 10

11 The lighting elements consist of small ground armatures that illuminate the path. This way irritating lighting poles are avoided. Photography Gerald Van Rafelgehem, Copyright 2006 Stad Kortrijk 11

12 THE RIVER LEIE 4. Skatebowl DESIGNERS: TEAM YOUTH CITY OF KORTRIJK TEAM PAIN, USA CONTRACTOR: TEAM PAIN TV LEIE DOORTOCHT KORTRIJK REALISATION: the skatebowl With the reconstruction of the public domain, the City of Kortrijk opted to insert a skate-bowl in Albert Park. The skate-bowl is a pole of attraction in this otherwise dead corner of the park. The design of this skate-bowl was developed by the city of Kortrijk together with Team Pain. The bowl was constructed as one monolith of concrete. The bowl creates a wider track variety than with a conventional ramp. In order to integrate the skate-bowl in the landscape, one uses the same syntax as the rest of the park. A horizontal construction, reinforced by the use of spacious lawns and the absence of irritating 12

13 vertical elements such as lighting armatures. The level differences in the park are absorbed by using stacked walls in red schist slate. Together with the paths in dolomite, this creates a harmonious completeness. In addition to the infrastructural story of the skate-bowl, the City also developed 2 other tracks to implement a sound policy around skateboarding. Local residents, users and municipal services get together at regular intervals in order to discuss the functioning of the bowl and make adjustments, if necessary. Finally, the City accommodates the Expertise Centre skate, blade and bike. 13

14 THE RIVER LEIE 5. College bridge DESIGNERS: Laurent NEY & PARTNERS, SUM (former Groep Planning), Brugge (B) CONTRACTOR: substructure: TV LEIE DOORTOCHT KORTRIJK Superstructure: THV VAN LAERE - ANMECO REALISATION: TYPE: SPAN: WEIGHT: steel suspension bridge with concrete deck 203 m kg the College bridge The new S-shaped College bridge for pedestrians and cyclists is designed by Laurent Ney, winner of the Steel Award It is a sleek experimental bridge, which connects both banks in one flowing line of 203 m. The Diksmuide quay and the Yzer quay don t have enough space to let the access slopes land in continuation of the bridge itself. By folding the bridge in its characteristic S-shape the bridge fits in the available space. 14

15 the S-shaped College bridge connects both banks in one flowing line of 203 m It is a steel suspension bridge hanging on only two pillars. The V-shaped cross sections constantly changes in a flowing curve. For designing this structure Laurent Ney has used the methodology of form finding. The art of form finding means to find the optimal deflected and finally visual shape, due to a given stress distribution acting on the deformed structure. So, he starts from the stress distribution to find the optimal geometry. In the conventional manner of designing, you start from the geometry and optimize it so that the stress distribution and following deformation of the structure is acceptable. 15

16 constantly changing V-shape, designed by form finding 16

17 THE RIVER LEIE 6. Quays on the north-side DESIGNERS: Jordi FARRANDO, Barcelona (Sp) Inter-communal Agency LEIEDAL, Kortrijk (B) CITY OF KORTRIJK CONTRACTOR: TV LEIE DOORTOCHT KORTRIJK REALISATION: Diksmuide Quay By widening and aligning the river Leie, suddenly perspectives of 700 m long arise in the city. This metropolitan scale is so prominent, that the reconstruction of quays should not cover it with small elements. Therefore, in the design of the quays, a resolute choice is made to use the large scale of the new Leie. The concept of the lay emphasize the scale by the width, a high degree of horizontality and simplicity of construction. former and new cross section 17

18 In the cross section pedestrians and cyclists are generously served. The eight meters wide promenade offers maximum comfort. Cars are banned from this promenade by a 20 cm high curb. The promenade is executed in hue concrete. Pedestrians and cyclist are separated by a linear arrangement of street furniture. Tal trees and lighting poles break the horizontality and accompany the cyclists and walkers. 18

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20 DESIGNERS: ZWARTS en JANSMA (NL) THE RIVER LEIE 7. Buda bridge TECHNUM, Gent (B) CONTRACTOR: substructure: TV LEIE DOORTOCHT KORTRIJK Superstructure: REALISATION: TYPE: steel girder bridge mobile bridge type: table bridge ( = rises horizontally) the Buda bridge The Buda bridge is the historical connection between Overleie and the city centre. The existing valuable buildings are situated close to the water. Because of the limited space, the choice was made for a mobile bridge. separated sidewalks for pedestrians on the Buda bridge 20

21 THE RIVER LEIE 8. Reep bridge The Reepbrug is a bridge for pedestrians at the western top of the Buda island. The bridge still has to be designed and built possible location of the Reep bridge 21

22 DESIGNERS: Bureau d études GREISCH THE RIVER LEIE 9. North bridge TECHNUM for the surrounding public space CONTRACTOR: substructure: TV LEIE DOORTOCHT KORTRIJK Superstructure: THV AELTERMAN bvba REALISATION: TYPE: SPAN: HEIGHT: cable-stayed bridge in concrete with seven guys and one pylon 94 m 24 m the North bridge The monumental cable-stayed bridge forms the only fixed connection between both banks in the inner-city. The bridge is designed by the renowned bureau Greisch, experts in cable-stayed bridges and one of the collaborators of the Millau bridge in France.. The concrete deck is suspended on seven cables. The only pylon is 24 m high. 22

23 Both abutments are shaped differently. The south side is a paved square, made of black basalt. Next to the bridge a multi-functional sport cage is situated. On the north side a small green area is built. South side: paved square and multi-functional sport cage 23

24 North side : small green area 24

25 DESIGNERS: THE RIVER LEIE 10. Ronde van Vlaanderen bridge ARCH & TECO, Gent (B) DEPARTMENT STEEL STRUCTURES WATERWAYS CONTRACTOR: substructure: TV LEIE DOORTOCHT KORTRIJK REALISATION: 2006 Steel structure: VICTOR BUYCK STEEL CONSTRUCTION TYPE: SPAN: steel bridge with concrete deck 153 m the Ronde van Vlaanderen bridge The Ronde van Vlaanderen Bridge is a completely new bridge in the city, as it is part of the new western ring. The bridge is the first fully galvanized bridge in Flanders. It is actually two separate bridges that are juxtaposed. The zinc plates underneath the sidewalks look like the fins of a fish. The bridge has a total span of 153 m over five spans. 25

26 two separate bridges that are juxtaposed 26

27 first fully galvanized bridge total span of 153 m over five spans 27