WO2025242547A1 - Travée de pont comprenant une pale de rotor d'éolienne - Google Patents

Travée de pont comprenant une pale de rotor d'éolienne

Info

Publication number
WO2025242547A1
WO2025242547A1 PCT/EP2025/063467 EP2025063467W WO2025242547A1 WO 2025242547 A1 WO2025242547 A1 WO 2025242547A1 EP 2025063467 W EP2025063467 W EP 2025063467W WO 2025242547 A1 WO2025242547 A1 WO 2025242547A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind turbine
bridge
rotor blade
turbine rotor
span
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2025/063467
Other languages
English (en)
Inventor
Boris Anne Maria KLOEG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technische Universiteit Delft
Original Assignee
Technische Universiteit Delft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technische Universiteit Delft filed Critical Technische Universiteit Delft
Publication of WO2025242547A1 publication Critical patent/WO2025242547A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/50—Maintenance or repair
    • F03D80/507—Retrofitting; Repurposing, i.e. reusing of wind motor parts for different purposes; Upgrading, i.e. replacing parts for improving the wind turbine performance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • Bridge span comprising a wind turbine rotor blade
  • the current invention relates to a bridge span, in particular comprising a first girder that is formed by at least a part of a first wind turbine rotor blade, and a bridge structure comprising a plurality of said bridge spans.
  • Such a bridge is for instance disclosed in patent publication GB2588990A, wherein a bridge span is formed by arranging a bridge deck that is connected to a wind turbine rotor blade, such that the wind turbine rotor blade forms the girder of the bridge span.
  • the spans of these pedestrian bridges are, however, limited due to the requirements with respect to the eigenfrequencies of the bridge.
  • the rotor blades are stiffest in a first section near the blade root and relatively flexible towards the blade tip, typically only a limited part of the blade length can be effectively used, such that relatively large parts of the rotor blades cannot be repurposed as girders.
  • a bridge span comprising: a first girder that is formed by at least a part of a first wind turbine rotor blade, wherein the at least a part of the first wind turbine rotor blade comprises, as seen along the length thereof, a proximal section, a distal section and a central section, wherein the central section is arranged in between the proximal and distal sections, and wherein the proximal section has a higher bending stiffness compared to the distal section; a bridge deck structure that is arranged for supporting traffic thereon, wherein said bridge deck structure extends in substantially a same longitudinal direction as the at least a part of the first wind turbine rotor blade and is connected to the at least a part of the first wind turbine rotor blade; and a plurality of supports that support the at least a part of the first wind turbine rotor blade at at least three support locations along its length; characterized in that a first support location is arranged at the
  • rotor blade bridges Due to the decreasing stiffness of the wind turbine rotor blades over the length of the blade from the blade root section to the bade tip, rotor blade bridges according to the prior art typically only employ the stiffest region (i.e. having the larger cross-section) of the rotor blade, in order to be able to get a bridge span satisfying the design requirements, in particular the eigenfrequency requirement. The remaining, less stiff, part of the rotor blade is typically cut-off and discarded.
  • the inventor has, surprisingly, found that by using the less stiff part of the wind turbine rotor blade and arranging the third support location, a further stiffening effect of the wind turbine rotor blade can be obtained, allowing to increase the primary span of the bridge span, wherein the primary span extends between the first and second support locations.
  • the bridge span according to the first aspect thereby differs from the bridge spans according to the prior art in that the wind turbine rotor blade, or the part of the wind turbine rotor blade, that is arranged as the girder is supported at at least three points, as specified above, along the length of the wind turbine rotor blade.
  • the first, stiffer, part of the wind turbine rotor blade, that is defined as being arranged in between the first and second support locations can thereby define the primary span of the bridge.
  • the second, more flexible part of the wind turbine rotor blade, that is defined as being arranged in between the second and third support locations thereby serves as an auxiliary support part for the first, stiffer part.
  • the second part of the wind turbine rotor blade has a stiffening effect on the first part of the rotor blade, as it effectively acts as an additional (rotational) spring at the second support.
  • This stiffening effect thereby leads to, effectively, an increase in the eigenfrequency of the bridge span, such that a larger primary span may be obtained when compared to arranging the rotor blade on only two spaced apart supports as in the prior art.
  • wind turbine rotor blades are formed to have a certain shape, bend and twist, they are typically not fully straight.
  • the longitudinal direction of the bridge deck structure, that is connected to (i .e. supported by) the at least a part of the wind turbine rotor blade i .e. a full and/or partial wind turbine rotor blade
  • the outer distal end of the wind turbine rotor blade i.e.
  • the blade tip is highly flexible, in particular in the flap-wise direction, such that, in case a partial rotor blade is used, the outer distal end (blade tip) is typically the part that is removed from the rotor blade, whereas the blade root (i.e. the part that is normally used for connecting the rotor blade to the rotor hub of the wind turbine) is typically retained as this is a stiff part of the blade.
  • the distance between the second and third support locations is in the range of 10% - 90%, preferably 30% - 80%, more preferably 40% - 70%, most preferably 50% - 60%, of the distance between the first and second support locations. Due to the continuously decreasing stiffness of the wind turbine rotor blade, both in flap-wise as in edge-wise direction, over the length of the blade, as seen from the blade root, or seen from the position of maximum distance between the leading and trailing edge, towards the blade tip, the ratio between the respective distances is dependent on the specific rotor blade used (and/or the respective part of the rotor blade that is used), however, a smaller ratio typically leads to an increased added stiffness effect on the primary span, such that the length of the primary span may be further increased.
  • the limit case obviously being a clamped connection of the wind turbine rotor blade at the second support.
  • the smaller ratio also leads to higher forces acting on the supports, and thereby leading to higher forces acting on the rotor blade at the support locations.
  • the rotor blade itself is a hollow and relatively thin walled structure, it may not be able to cope with too high forces, such that the optimal ratio will typically not lead to a too small distance between the second and third support locations.
  • the at least a part of the first wind turbine rotor blade comprises a blade root section that is arranged for connecting it to a rotor hub of a wind turbine; and wherein the first support location is at the blade root section of the at least a part of the first wind turbine rotor blade.
  • the blade root section of a wind turbine rotor blade is a section having a high stiffness that is arranged for being able to transfer relatively high forces and moments to the rotor hub, such that this section is highly beneficial to reuse in the bridge girder.
  • the bridge span may comprise only a first girder that is, for instance, arranged underneath, trough, or above the bridge deck structure in a substantially central position of the bridge deck structure, it is preferred that the bridge span comprises a second girder that is formed by at least a part of a second wind turbine rotor blade and wherein said bridge deck structure is connected to the at least a part of the second wind turbine rotor blade.
  • the second girder in the form of at least a part of a second wind turbine rotor blade allows to arrange the bridge deck structure such that it extends in between the respective wind turbine rotor blades (or the respective parts thereof), such that the overall height of a bridge comprising such a bridge span may be reduced, when compared to arranging the bridge deck structure on top of the at least a part of the first wind turbine rotor blade. Nonetheless, if the width, rather than the height of the bridge is the limiting factor, the bridge deck structure may also be arranged on top of the respective wind turbine rotor blades (or the respective parts thereof). It is further noted that the bridge deck structure may be substantially horizontally arranged in a cross-section perpendicular to the longitudinal direction.
  • the at least a part of the second wind turbine rotor blade is oriented to be substantially in a same direction and, preferably, spaced apart from the at least a part of the first wind turbine rotor blade and, preferably, wherein the blade root sections of the at least a part of the first wind turbine rotor blade and the at least a part of the second wind turbine rotor blade are arranged at a same longitudinal end of the bridge span, such that respective support locations on the at least a part of the first wind turbine rotor blade correspond to respective support locations on the at least a part of the second wind turbine rotor blade.
  • the bridge deck structure is easily mounted in between the respective wind turbine rotor blades, such that the hereabove described benefits are obtainable.
  • the bridge deck structure is connected to the at least a part of the first wind turbine rotor blade, and preferably also the at least a part of the second wind turbine rotor blade, at a plurality of connection points that are spaced apart the length of the at least a part of the respective wind turbine rotor blade; preferably wherein said connection points are spaced apart no further than 8 meters, preferably no further than 5 meters, more preferably no further than 3 meters, most preferably no further than 2 meters.
  • the bridge deck structure and wind turbine rotor blade(s) are thereby connected over their lengths, such that a favourable transfer of forces is obtained, and such that a stiff overall structure is obtained.
  • connection points are formed in the spar cap of the at least a part of the first wind turbine rotor blade, and preferably also in the spar cap of the at least a part of the second wind turbine rotor blade.
  • the spar cap is relatively stiff, thick and solid part of the rotor blade such that is able to bear and transfer the connection forces, which are typically point-forces acting at a discrete location and/or relatively small area, between the deck structure and wind turbine rotor blade(s).
  • the bridge deck structure is a plate-like structure, that is preferably made from steel, crosslaminated timber (CLT) or fibre-reinforced polymer (FRP) composite.
  • a plate-like structure is beneficial as it increases the horizontal stiffness of the bridge and allows that the deck structure then transfers inplane shear forces, which is not the case when perpendicular beams are used in the bridge deck structure as a deck support.
  • Steel, cross-laminated timber (CLT) or fibre-reinforced polymer (FRP) composite are relatively lightweight and stiff materials, such that a bridge deck structure having sufficient capacity is achieved, while still being relatively lightweight.
  • a fibre-reinforced polymer composite deck may for instance be formed by arranging a foam based core layer that is arranged between upper an lower layers of FRP material.
  • a more traditional concrete-based bridge deck would add too much mass, such that the eigenfrequency requirements for the bridge could potentially not be met, or could only be met at the cost of reducing the length of the primary span.
  • the bridge deck structure is shaped to have a pre-camber, preferably along the longitudinal direction. Another criterium that has to be met is a maximum downward deflection that the bridge span may have.
  • the structure may be loaded with higher loads before the maximum downward deflection is reached, such that the bridge span may also support heavier traffic, such as motorized vehicles (e g. trucks, cars, vans, etc).
  • said bridge span is preferably a foot- and/or bicycle bridge span, or wherein said bridge span is a road bridge span for supporting motorized vehicles
  • the bridge deck structure may have a pre-camber in a transverse direction, i.e. in the crosssection perpendicular to the longitudinal direction. In general, pre-camber is also beneficial for draining water from the bridge span.
  • At least one support of the plurality of supports comprises a load spreading member that is arranged for transferring support forces over a predefined surface area of the outer surface of the at least a part of the wind turbine rotor blade at the respective support location, in particular wherein an inner side of the load spreading member is shaped to correspond to the outer surface and/or comprises a channelshaped section having a substantially U- or J-shaped cross-section for receiving the outer surface therein.
  • a load spreading member may be formed from steel, concrete or a fibre-reinforced composite material (or a combination of these) and can thereby provide for a larger area of contact between the support and the wind turbine rotor blade, such that peak forces on the relatively thin wall of the wind turbine rotor blade are prevented.
  • the load spreading members are therefore preferable formed to correspond to the outer shape of the wind turbine rotor blade at the respective support location, such that a close fit between the support and the wind turbine rotor blade is obtained that enable an even further improved transfer of forces between the rotor blade and the support.
  • the badge span is formed as a double bridge span having the primary span that extends between the first and second support locations and a secondary span that extends between the second and third support locations.
  • the secondary span may thereby serve as the approach span, whereas the primary span can extend, for instance over one direction of a two-line highway or canal.
  • said bridge span is formed as a single bridge span having a single span that extends between the first and second support locations and wherein said second and third support locations are supported by a single footing structure and/or abutment.
  • the distance between the first and third support locations is in the range of 50
  • the disclosure relates to a bridge structure comprising a first and second bridge span according to any of the preceding embodiments, wherein the first bridge span is oriented in a first direction and the second bridge span is oriented in a second, opposite, direction; wherein the blade root sections of the first and second bridge spans face each other; and wherein the bridge deck structures of the first and second span align for forming at least one continuing traffic lane over the respective bridge deck structures.
  • a traffic bridge can, for instance, be obtained that is able to span two-directional double-laned highways using end-of-life blades of approximately 35 - 40 meter, as a primary span per bridge span of 17 meters is obtainable, such that this allows to span the two lanes and an emergency lane using the primary span.
  • 35 - 40 meter blades were the state-of-art, such that most of currently discarded blades fall in the range.
  • the discarded blades can be used for bridging over a large part of these highways.
  • the blade root sections of the first and second bridge spans that directly face each other are not directly structurally interconnected. Even though the blade roots are typically comprised with a ring of bolt holes directly formed in the blade root section for allowing bolts to be mounted therein, coupling a pair of blade roots requires adding a relatively complex, and costly, interface, while it does not necessarily lead to an increased length of the primary span. It is further noted, that the respective bridge deck structures of the first and second bridge spans are, preferably, also not directly structural interconnected to each other. A gap between the respective bridge deck structures may be covered and/or filled with a compressible seal to prevent water and chemicals from entering such gap, while still allowing for movement of the individual bridge.
  • FIG. 1 shows a schematical view of an embodiment of a bridge structure according to the second aspect.
  • FIG. 1 shows the structural model of the bridge structure of figure 1.
  • FIG. 2B shows an underlying structural model of the primary span for explaining the additional stiffness that the secondary span provides.
  • FIG. 3 schematically shows the eigenmodes for various single span and double span configurations.
  • - Figure 4 shows the three-dimensional mode shape corresponding to the critical eigenfrequency of the bridge span according to the disclosure.
  • - Figure 5 shows, in a three-dimensional cross-sectional perspective view, a bridge deck structure that is connected to one of the wind turbine rotor blades forming a girder of the bridge span.
  • FIG. 6 shows, in a three-dimensional cross-sectional perspective view, a support that comprises an embodiment of a load spreading member for supporting the wind turbine rotor blade forming a girder of the bridge span.
  • FIG. 7A - 7C show, in three-dimensional cross-sectional perspective views, various embodiments of load spreading members.
  • Figure 1 shows a frontal view of a bridge structure 1 comprising a pair of bridge spans 2,3 that, as seen in the side view, can be considered as substantially mirror-symmetric with respect to mirror-line M (although it is noted that the wind turbine rotor blades 10 themselves cannot be physically mirrored).
  • the bridge structure 1 is seen to extend over two-directional double-laned highway 100 that comprises a total of four lanes arranged in a pair of double lanes per direction, wherein each double lane 101 is arranged with an emergency lane 102 to the side.
  • a central pier 43 is arranged, whereas to the sides of the emergency lanes 102 an additional of set of piers 42 is provided.
  • a primary span 21 , 31 of each bridge span 2,3 extends between the central pier 43 and the pier 42, its length being indicated by Li .
  • a secondary span of each bridge span 2,3 extends between the pier 42 and the abutment 41, its length being indicated by L 2 .
  • a respective bridge span 2,3 is seen to comprise a (partial) wind turbine rotor blade 10, whose blade root section 11 is supported, at a first support location 51 on wind turbine rotor blade 10, on the central pier 43.
  • the wind turbine rotor blade 10 further comprises a leading edge 13 that is, in the current embodiment, directed in a downward direction (i.e. in the direction of gravity).
  • the trailing edge 14 is comprised, wherein a maximum edge height 12 of the blade is at a position of maximum distance between the leading and trailing edges.
  • wind turbine rotor blades may vary between designs and manufactures, but can in general be considered known to the skilled person, although a special emphasize is put to the fact that a rotor blade becomes more slender towards the blade tip (i.e. the longitudinal outer end at the opposite end of the blade root section 11), such that the stiffness (in both edge-wise and flap-wise direction) will typically decrease (for flap-wise from the blade root section 11, for edge-wise from the maximum edge height 12) towards the blade tip.
  • a wind turbine rotor blade 10 forms a first girder of each bridge span 2,3 and is supported at (at least) three locations along the length of the blade.
  • a first support location 51 is arranged at the blade root section 11 that defines the proximal end of the wind turbine rotor blade 10 and is commonly used for interconnecting the wind turbine rotor blade 10 to a rotor hub of a wind turbine.
  • a second support location 52 is arranged at a distance Li of the first support location 51, such that the therein between arranged part of the bridge span 2,3 is the primary span 21 ,31 of the respective bridge span. At the second support location 52 the wind turbine rotor blade 10 is supported, in the current embodiment, on pier 42.
  • a third support location 53 is arranged that is, in the current embodiment, supported on an abutment 41.
  • the part of the bridge span 2,3 that extends between the second and third support locations 52, 53 forms, in the current embodiment, the secondary span 22, 32.
  • the sum of the respective lengths Li, L 2 of the primary span 21,31 and secondary span 22,32 is defined as the total length L T , which is substantially equal to the distance between the first and third support locations 51, 53, if one neglects the size of the supports.
  • the blade root sections 11 of the respective wind turbine rotor blades 10 that are arranged in line with each other are not directly structurally interconnected, as was explained above.
  • FIG. 2A shows a simplified abstract view of the bridge structure 1, and a visualization of the underlying structural model 1’.
  • the abutment 41 is modelled as a hinged-support, whereas the respective piers 42, 43 are model as roller-supports.
  • the primary span 21, 31 is the most important of the respective spans, as this defines the width of the primary clearance underneath the bridge span 2,3. Due to the decreasing stiffness of the wind turbine rotor blades 10, rotor blade bridges according to the prior art typically only employ the stiffest region (i.e. having the larger cross-section) of the rotor blade 10, in order to be able to be able to get a bridge span satisfying the design requirements, in particular the eigenfrequency requirement.
  • the remaining, less stiff, part of the rotor blade 10 is typically cut-off and discarded.
  • the inventor has, surprisingly, found that by using the less stiff part of the wind turbine rotor blade and arranging the third support location 53, a further stiffening effect of the wind turbine rotor blade 10 can be obtained, allowing to increase the primary span 21 , 31 of the bridge span.
  • FIG 2B This effect, is visualized in figure 2B, showing a single bridge span 2 of the bridge structure 1 and the simplified structural model 2” of the respective single bridge span 2 for the first eigenmode Mi (M as a visualization of a three-dimensional finite element model as shown in figure 4).
  • the further stiffening effect can be explained as follows.
  • various single span and double span configurations are shown.
  • the respective spans shown in figure 3 comprise girders having an constant cross-section along the entire length.
  • the upper configuration A shows the eigenmode M s for a single span bridge 21 ’ that is supported at two support locations 51, 52 arranged at the respective longitudinal outer ends of the span.
  • the lowest configuration C which is shown on top of configuration B, is a double span 21 ’, 22’ that is supported at three supports locations 51, 52, 53’ that are evenly spaced from each other (i.e. both spans have equal length Li).
  • the mass and stiffness of the spans 21’, 22’ are equal to each other and equal to the mass and stiffness of the single span 21’ shown in A Therefore, the first eigenfrequencies (of configuration A and C) are identical and the modeshape M s is equal to halve of the modeshape of M D , in other words, the second span 22’ does not add to the dynamic stiffness (i.e. impedance) of the first span 21’, such that the eigenfrequency of the single span bridge from A is equal to the double span bridge from C.
  • the shortest span (for simplicity of the explanation again assuming a girder having a constant cross-section along the entire length), i.e. second span 22, does add to the dynamic stiffness of the first span 21, such that the eigenfrequency of the first span 21 is increased and the modeshape Mi is also different
  • the point of contraflexure C is also shifted, with respect to the modeshape MD, from the second support location 52 towards a position in between the first and second support locations 51, 52.
  • the first eigenmode Mi that is indicated in configuration B in figure 3 is seen to comprise a bending of the primary span 21 in a first direction and a bending of the secondary span 22 in a second, opposite, direction.
  • the required deformation of the second span 22 thereby effectively mobilizes the impedance of the secondary span 22 to act as an additional impedance on the first span 21.
  • the ratio L 2 /LI should be between 10% and 90%, with an optimum at around 50% - 60%, as indicated above.
  • Figure 4 shows the first eigenmode Mi ’ as a three-dimensional perspective visualization of a three- dimensional finite element model of the bridge span 2.
  • the bridge span 2 comprises a first and second wind turbine rotor blade 10, 10’ that are arranged such that their longitudinal directions extend substantially along the longitudinal direction I of a bridge deck structure 60 that is arranged in between the respective wind turbine rotor blades 10, 10’.
  • the rotor blades 10, 10’ extend from substantially the same longitudinal position in the same longitudinal direction, wherein the blade root sections 11, 11’ are thus arranged at the same longitudinal outer end 23 of the bridge span 2.
  • the first, second and third support location 1, 52, 53 are arranged at substantially the same positions along the lengths of the respective rotor blades 10, 10’.
  • FIG. 5 shows that bridge deck structure 60 that is connected to one of the wind turbine rotor blades 10 forming the girder of the bridge span 2,3.
  • the bridge deck structure 60 is seen to comprise a bridge deck 61 for supporting traffic (e g. persons, bikes, cars, (light) trucks, etc ) thereon.
  • the bridge deck 61 is formed from a solid plate, such as a cross-laminated timber (CLT), or a FRP sandwich-type plate, for instance formed from fibre reinforced polymer (FRP) upper and lower layers that are arranged around a foam core, preferably having a thickness in the range of 160mm - 500 depending on the size of the deck structure span (i .e.
  • the bridge deck structure 60 is seen to comprise a plurality of, preferably evenly, spaced apart connections, formed by the connection bodies 62, that allow to connect (by glue, bolts, screws, plugs and/or any combination thereof) the bridge deck structure 60 to the wind turbine rotor blade 10.
  • the connections are then preferably arranged in the spar caps 16 of the rotor blade 10, as this is a stiff and reinforced section of the rotor blade that effectively forms, together with the shear web(s) 17, its backbone. Relatively high point-loads can thereby be effectively transferred between the rotor blade 10 and the bridge deck structure.
  • FIG. 6 shows, in more detail, the structural details at the second support location 52, although this may be applied at any of the support locations 51, 52, 52.
  • a load spreading member 71 is arranged on top of the pier 42.
  • the load spreading member 71 is seen to comprise a pre-shaped plate, for instance of steel and/or a fibre-reinforced composite, that is arranged to substantially exactly fit a part of the outer surface of the wind turbine rotor blade 10 at the second support location 52.
  • the pre-shaped plate may also be formed to have a substantially J- or U- shaped cross-section allowing the wind turbine rotor blade 10 to fall within the U-shape, thereby allowing for an even further improved load spreading.
  • the load spreading member 71 is arranged to abut and/or connect to the wind turbine rotor blade 10 at the spar cap 16, which is able to transfer the high support forces and may be connected to the spar cap 16 by glue, bolts, screws, plugs and/or any combination thereof.
  • FIGS 7A - 7C show various alternative embodiments of a load spreading member 72, 73, 74, which all share the common concept of providing an enlarged and stiffened area of contact between the supports and the wind turbine rotor blades 10.
  • Load spreading member 72 extends from the spar cap 16 to the leading edge 12, whereas load spreading member 73 forms around the leading edge 12 by having the substantially J- or U-shaped cross-section.
  • Load spreading member 74 is then arranged to be only at the location of the spar cap 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne une travée de pont comprenant : une première poutre qui est formée par au moins une partie d'une première pale de rotor d'éolienne, ladite partie de la première pale de rotor d'éolienne comprenant, vue le long de sa longueur, une section proximale, une section distale et une section centrale, la section centrale étant disposée entre les sections proximale et distale, et la section proximale ayant une rigidité à la flexion supérieure par rapport à la section distale; une structure de tablier de pont qui est agencée pour supporter un trafic sur celle-ci, ladite structure de tablier de pont s'étendant sensiblement dans une même direction longitudinale que la ou les parties de la première pale de rotor d'éolienne et étant reliée à la ou aux parties de la première pale de rotor d'éolienne; et une pluralité de supports qui supportent l'au moins une partie de la première pale de rotor d'éolienne au niveau d'au moins trois emplacements de support le long de sa longueur; caractérisés en ce qu'un premier emplacement de support est disposé au niveau de la section proximale, un deuxième emplacement de support est disposé au niveau de la section centrale et un troisième emplacement de support est disposé au niveau de la section distale; et une distance entre les premier et deuxième emplacements de support étant supérieure à une distance entre les deuxième et troisième emplacements de support.
PCT/EP2025/063467 2024-05-21 2025-05-15 Travée de pont comprenant une pale de rotor d'éolienne Pending WO2025242547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2037725A NL2037725B1 (en) 2024-05-21 2024-05-21 Bridge span comprising a wind turbine rotor blade
NL2037725 2024-05-21

Publications (1)

Publication Number Publication Date
WO2025242547A1 true WO2025242547A1 (fr) 2025-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/063467 Pending WO2025242547A1 (fr) 2024-05-21 2025-05-15 Travée de pont comprenant une pale de rotor d'éolienne

Country Status (2)

Country Link
NL (1) NL2037725B1 (fr)
WO (1) WO2025242547A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2588990A (en) 2019-06-26 2021-05-19 Przed Wielobranzowe Anmet Andrzej Adamcio Bridge Spans
DE202023000275U1 (de) * 2023-02-08 2023-02-28 Toni Sutor Brücke aus wiederverwerteten Teilen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2588990A (en) 2019-06-26 2021-05-19 Przed Wielobranzowe Anmet Andrzej Adamcio Bridge Spans
DE202023000275U1 (de) * 2023-02-08 2023-02-28 Toni Sutor Brücke aus wiederverwerteten Teilen

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NL2037725B1 (en) 2025-11-27

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