EP3350391A2 - Tour pour éolienne constituée d'éléments préfabriqués en béton en forme de segment annulaire - Google Patents

Tour pour éolienne constituée d'éléments préfabriqués en béton en forme de segment annulaire

Info

Publication number
EP3350391A2
EP3350391A2 EP16758160.2A EP16758160A EP3350391A2 EP 3350391 A2 EP3350391 A2 EP 3350391A2 EP 16758160 A EP16758160 A EP 16758160A EP 3350391 A2 EP3350391 A2 EP 3350391A2
Authority
EP
European Patent Office
Prior art keywords
concrete
tower
precast concrete
segment
vertical
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.)
Withdrawn
Application number
EP16758160.2A
Other languages
German (de)
English (en)
Inventor
Josef Knitl
Stefan BÖGL
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.)
Max Boegl Wind AG
Original Assignee
Max Boegl Wind AG
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 Max Boegl Wind AG filed Critical Max Boegl Wind AG
Publication of EP3350391A2 publication Critical patent/EP3350391A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • E04H12/342—Arrangements for stacking tower sections on top of each other
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/16—Prestressed structures
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • 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
    • Y02E10/728—Onshore wind turbines

Definitions

  • the present invention relates to a tower for a wind turbine with at least one tower section made of concrete, which is composed to form horizontal joints of a plurality of superposed annular concrete segments.
  • Each concrete segment is composed of at least two, juxtaposed, annular segment-shaped precast concrete elements forming vertical joints.
  • the ring segment-shaped precast concrete parts each have an outer side, an inner side and an upper, a lower and two lateral contact surfaces.
  • the concrete segments of the at least one tower section are connected to each other in the vertical direction of the tower by means of vertical clamping means.
  • Towers for wind turbines have become known in the prior art in various designs.
  • steel towers and prestressed towers made of precast concrete elements have become known.
  • the towers are exposed during operation of the wind turbine considerable loads, including wind forces and suggestions of the rotating rotor.
  • the construction of the towers must therefore have sufficient rigidity even in extreme load cases.
  • EP 1 474 579 B1 shows a tower which is composed of annular tower sections, each consisting of several prefabricated precast concrete elements.
  • the annular tower sections are clamped together by tendons in the vertical direction of the tower.
  • the individual precast concrete parts are assembled on the construction site into an annular section, wherein the vertical joints between two adjacent precast concrete elements are filled with mortar.
  • the horizontal joints between two such sections filled with mortar.
  • a rigidity of the tower is achieved in the horizontal as well as in the vertical direction.
  • the installation of the tower on site is relatively expensive.
  • the individual precast concrete parts of the tower are comparatively large, which complicates both the transport to the construction site and the handling of the components on the site.
  • the EP 2 631 393 A1 also shows a wind tower, which is composed of large, prefabricated, ring segment-shaped precast concrete elements, which are clamped together in the vertical direction by clamping means.
  • the individual ring segment-shaped precast concrete parts can be connected in the horizontal direction without mortar or the vertical joints are carried out dry.
  • the ring segment-shaped precast concrete parts are clamped together in the horizontal direction by screws or bolts.
  • the built-in parts of the precast concrete parts must be provided with appropriate holes for the bolts or screws and screwed together on site.
  • Object of the present invention is to propose a precast concrete tower, which has sufficient rigidity and allows easy installation of the tower on the site.
  • a tower for a wind turbine has at least one tower section made of concrete, which is composed of a plurality of superimposed annular concrete segments to form horizontal joints.
  • Each concrete segment is composed to form vertical joints of at least two juxtaposed ring segment-shaped precast concrete elements.
  • the precast concrete elements each have an outer side, an inner side, an upper, a lower and two lateral contact surfaces. get up.
  • the concrete segments of the at least one tower section are connected to each other in the vertical direction of the tower only by vertical clamping means.
  • the vertical joints of two concrete segments arranged one above the other are offset in the circumferential direction of the concrete segments, with one precast concrete element of an upper concrete segment of the two superimposed concrete segments overlapping a vertical joint of an underlying concrete segment of the two superimposed concrete segments.
  • the superimposed concrete segments are clamped together by the vertical clamping means, in particular vertical tendons such that in the horizontal direction of the tower through the vertical joint cross precast concrete part, a load-bearing, frictional connection is formed.
  • the biasing forces of the vertical clamping means must be so high that the friction forces arising in the horizontal joints securely fix the individual precast concrete parts of a segment even in extreme load case and prevent opening of the vertical joints. Since on the construction site the step of potting the vertical joints can be omitted and a bonding of the mortar between the joints does not have to wait, the tower can be built in a very fast and cost-effective manner.
  • the precast concrete parts of each concrete segment are connected together load-bearing only by the frictional connection by means of the vertical joint cross-precast concrete element.
  • the tower is easy to dismantle.
  • At least the lateral contact surfaces of the precast concrete elements are flat, d. H. they form a smooth, flat surface without elevations, depressions, teeth or the like. To form the vertical joints, the contact surfaces then butt each other butt. The production of precast concrete parts and their formwork is simplified by this.
  • the upper and lower contact surfaces can be flat for this reason. However, it is also possible to form the upper and / or the lower contact surfaces with a positioning aid, a thrust toothing or the like.
  • the lateral contact surfaces of the precast concrete parts may also each have at least one, preferably in each case two, raised contact areas.
  • the contact areas make it easier to bring adjacent precast concrete parts of a concrete segment to each other to stop, which in turn the rigidity of the tower in the horizontal direction and an improved load capacity can be guaranteed at bending stress e.
  • the contact areas also facilitate the positioning of the individual precast concrete elements during assembly.
  • the precast concrete elements have at least at their upper and preferably also at their lower end, in particular in a central region, based on the width of the precast concrete elements, an additional reinforcement or an increased reinforcement content.
  • the additional reinforcement or the increased reinforcement content takes stress peaks, wel- under load in the upper area of the prefabricated concrete parts, in each case below the vertical joints of the overlying concrete segment, on.
  • At least the upper and the lower contact surfaces of the precast concrete elements are ground.
  • Even with the lateral contact surfaces it may be useful to grind them to facilitate an exact alignment of the precast concrete parts during assembly and to minimize the vertical joints. If raised contact areas are provided on the lateral contact surfaces, it makes sense to grind them to achieve an exact alignment of the precast concrete parts to each other.
  • the lateral contact surfaces themselves need not be ground in this case.
  • the precast concrete parts of each concrete segment are connected by horizontal clamping means.
  • the horizontal clamping means can be designed as a ring tendons or as a screw.
  • the precast concrete parts of each one concrete segment without applying a bias by Switzerland Ltd., in particular glands are interconnected.
  • the glands are preferably designed such that they serve as assembly aids in the manufacture of the tower and thus do not constitute a load-bearing connection in normal operation - apart from extreme loads.
  • the glands can thus be dimensioned relatively small and inexpensive.
  • the screw can be designed so that the only the inclusion of possibly occurring tensile loads this.
  • a particularly advantageous embodiment of the tower provides that the concrete segments are composed of at least three, preferably four, ring segment-shaped, designed as a common part precast concrete parts.
  • the preparation of the tower or its precast concrete parts is facilitated by the fact that the precast concrete parts designed as identical parts of at least one segment can be produced by means of the same formwork.
  • the precast concrete formwork smooth, d. H. unprocessed, and preferably untreated is therefore not required, which further simplifies the production of the tower.
  • no material removal or construction is required in order to achieve a smooth surface and to compensate for tolerances of the precast concrete parts.
  • the precast concrete parts are manufactured for this purpose as Wegmaschine, in which the upper and lower contact surfaces are exactly plane-parallel to each other.
  • the lateral contact surfaces, but at least the contact areas, if present, are exactly positioned relative to the upper and lower contact surfaces.
  • the height of the ring segment-shaped precast concrete parts is less than the width of the annular precast concrete parts, wherein preferably the height of the ring segment-shaped precast concrete parts is less than a third, preferably less than a quarter, the width of the ring segment-shaped precast concrete parts. Since the diameter of wind turbines often reaches up to 10 m, at least in the foot area, it is even in the case of prefabricated concrete elements designed as half shells, this involves a great deal of effort to transport them from the precast plant to the construction site.
  • the precast concrete parts are less high than wide, preferably less than 3 m high, they also have a size due to the subdivision of the concrete segments in three or more precast concrete parts, which easily allows a road transport to a width of less than 3 m.
  • the comparatively small size of the precast concrete elements also makes it possible to produce them on site at the construction site, so that expensive transports at the installation site are no longer required. It is particularly advantageous if the height of the ring segment-shaped precast concrete parts is less than 2.5 m.
  • the vertical tendons are performed without composite and outside of a concrete section of the precast concrete elements. Due to the lack of guidance of the tendons, the construction of the tower can be done very quickly. In addition, both the retightening and replacing the vertical tendons for maintenance as well as the dismantling of the tower is much easier.
  • the tower portion has on its inner wall between the head bearing and the kitlager at least one integrally formed on the tower portion projection on which at least one of the vertical clamping members is present.
  • the at least one tendon can be fixed in a simple manner by friction on the projection on the inner wall, so that undesirable transverse movements of the tendons can be avoided.
  • the projection has a rectangular cross-section.
  • the manufacture of the tower or of the tower section is thereby simplified, since a projection with a rectangular cross-section can be inserted in a simple manner. rather can be integrated into the formwork and the tower section can be easily demolded.
  • harmful effects of the projection on the tendons can be minimized in the investment area.
  • other cross-sectional shapes such as trapezoidal, semicircular, triangular, etc. are conceivable, advantageously the corners are in turn rounded.
  • the projection on the inner circumference of the tower section is formed circumferentially.
  • vertical tendons at any point of the inner circumference of the tower section.
  • such a finished part can also be used for different towers with a different number of tendons.
  • the at least one tendon rests on the at least one projection at a deflection angle. This results in a particularly high frictional force between the tendon and the projection, so that the tendon is kept in a particularly favorable manner.
  • the tendons still rest against the projection when the tower section undergoes a bending load, for example, by wind forces.
  • the tower section has a plurality of projections formed on its inner wall at a height offset from one another.
  • the vertical tendons can thereby be fixed two or more times over its length on the inner wall of the tower section, which is particularly advantageous for very high tower sections with heights of over 80 m.
  • the tower section has at least one annular concrete segment on which the at least one projection is formed.
  • the tower section is composed to form horizontal joints of a plurality of stacked, annular concrete segments and can be constructed in this way by prefabricated construction. Also, the at least one concrete segment with the projection can be prefabricated as a finished part.
  • the at least one concrete segment with the projection of at least two juxtaposed ring segment-shaped precast concrete elements is composed.
  • the at least one projection is integrally formed on at least one of the precast concrete parts.
  • tower sections with large diameters of, for example. 4m and above can be manufactured in prefabricated construction and transported on the road.
  • each of the ring-segment-shaped precast concrete parts of a concrete segment has a projection, so that the tower section as a whole has a circumferential projection.
  • FIG. 1 shows a tower of a wind turbine with a tower section
  • FIG. 2 shows a schematic representation of a tower section with horizontal joints and vertical joints
  • Figure 3 is a ring segment-shaped precast concrete in a view of the
  • FIG. 5 shows a tower section with a concrete segment, which is composed of four ring segment-shaped precast concrete elements, in a plan view
  • Figure 6 shows another embodiment of a ring segment-shaped precast concrete part in a front view from the inside, as well as
  • FIG. 7 shows the ring segment-shaped precast concrete element of FIG. 6 in one
  • FIG. 8 shows a prestressed with vertical tendons tower of several, superimposed, annular concrete segments according to a second embodiment in a sectional view
  • FIG. 9 shows a ring-shaped concrete segment with a projection in a schematic sectional view
  • FIG. 10 shows a ring segment-shaped precast concrete element with a projection in a top view
  • FIG. 11 shows a further embodiment of a ring segment-shaped precast concrete part with a projection in a plan view
  • Figure 12 shows another embodiment of a ring segment-shaped precast concrete part with a plurality of projections in a plan view
  • Figure 13 shows a further embodiment of a ring segment-shaped precast concrete part with a plurality of projections in a plan view.
  • FIG. 1 shows a tower 1 for a wind power plant with at least one concrete tower section 3.
  • the tower 1 is erected in a conventional manner on a foundation 2 and is presently designed as a hybrid tower, that is, on the tower section 3 made of concrete, another tower section 4 made of steel, wherein the two sections 3 and 4 by means of a transition piece 5 connected together are.
  • the tower includes only one or more tower sections 3 made of concrete, wherein the tower sections 3 made of concrete can also be designed in different ways.
  • the tower section 3 made of concrete conical In the present case the tower section 3 made of concrete conical; However, it is also possible, one or more tower sections 3 made of concrete cylindrical, as shown in Fig. 4, or to combine a conical tower section 3 made of concrete with a cylindrical tower section 3 made of concrete.
  • the concrete tower section 3 shown here consists of a plurality of superimposed, annular concrete segments 7, which are each arranged one above the other with the formation of horizontal joints 6.
  • Each of the concrete segments 7 of the tower section 3 again consists of at least 3 annular segment-shaped precast concrete parts 9, which are arranged side by side to form vertical joints 8 in the circumferential direction of the individual concrete segments 7.
  • the concrete segments 7 of the at least one tower section 3 made of concrete are connected to each other by vertical clamping means, in particular vertical clamping members 18, as set forth in particular with reference to FIG.
  • a nacelle and a rotor of the wind turbine can be arranged in the usual way (not shown in the present case).
  • further tower sections 3 may be present, in which the concrete segments 7 are designed as full rings. This is particularly advantageous in conical towers 1, in which the upper concrete segments 7 have a smaller diameter.
  • FIG 2 shows a tower section 3 with horizontal joints 6 and vertical joints 8 in a schematic, broken detail.
  • each concrete segment 7 of the tower section 3 consists of at least two precast concrete elements 9, which are composed to form a vertical joint 8.
  • each precast concrete part 9 each has an upper contact surface 1 1, a lower contact surface 12 and two lateral contact surfaces 13.
  • the lateral contact surfaces 13 are presently provided with raised contact areas 14, which abut one another in the horizontal direction of the tower 1 and the concrete segment 7.
  • a single, such ring-segment-shaped precast concrete part 9 is shown in a view from the inside 16 ago.
  • the contact regions 14 in the present case are slightly spaced in FIG. 2 and, in addition, shown particularly strongly protruding.
  • the contact areas 14 are mounted to stop and are only slightly out of the lateral contact surfaces 13 forth.
  • the horizontal joints 6 can be seen, which are shown here completely closed, which also corresponds to the state after applying the vertical bias.
  • the concrete tower section 3 is prestressed in the vertical direction by vertical clamping members 18, which connect the individual concrete segments 7 arranged one above the other.
  • the vertical tendons 18 are present without composite and out of the concrete cross section of the precast concrete 9 in the interior 24 of the tower and therefore installed in a simple manner.
  • the concrete segments 7 are connected to one another in the vertical direction of the tower 1 only by the vertical clamping members 18.
  • the vertical clamping members 18 are fixed to a foot bearing, preferably the foundation 2, of the tower 1 and extend at least to the end of the respective tower section 3 made of concrete, where they preferably at a head bearing, for example at the transition piece 5 (s ).
  • the vertical clamping members 18 are guided by cladding tubes 17 in the foundation 2.
  • the upper and lower contact surfaces 1 1, 12 of the precast concrete parts may be ground.
  • the contact surfaces 1 1, 12 therefore have such small tolerances both in terms of their flatness and with respect to their parallelism to each other that at least after the application of the bias by the vertical clamping members 18, the horizontal joints 6 are almost completely closed.
  • the lateral contact surfaces 13 or their contact regions 14 can therefore also be ground so that the vertical joints can be made as narrow as possible.
  • the position of the contact surfaces 1 1, 12, 13 no alignment work must be performed.
  • the precast concrete elements 9 are each connected to a concrete segment 7 in the horizontal direction by a frictional load-bearing connection by the prestressing force of the vertical clamping members 18 and the precast concrete elements 9 of the overlying concrete segment 7 overlapping the vertical joints 8.
  • the precast concrete elements 9 are therefore only loosely placed on the underlying concrete segment 7 and set with respect to their lateral contact surfaces 13 to stop, so that the vertical joints 8 are largely closed.
  • the precast concrete parts 9 of the overlying concrete segment 7 are then placed so that the vertical joints 8 are offset from the underlying concrete segment 7 and the precast concrete parts 9 of each upper concrete segment 7, the vertical joints 8 of the respective underlying concrete segment 7 overlap.
  • the precast concrete parts 9 of superimposed concrete segments 7 are preferably offset by 90 ° from one another. However, other offset angles, for example of only 45 °, are also possible.
  • the vertical clamping members 18 are inserted and clamped. The vertical tensioning members 18 are biased with such a high biasing force that thereby resulting in the horizontal joints 6 frictional force prevent moving apart of the precast concrete elements 9 in the horizontal direction and thus opening of the vertical joints 8.
  • the tower 1 receives by the juxtaposition of the lateral contact surfaces 13 and their contact areas 14 a good stiffness in the horizontal direction and an improved load capacity under bending stress.
  • the precast concrete elements 9 have on each lateral contact surface 13 at least one contact region 14, by means of which they contact a lateral contact region 14 of an adjacent precast concrete part 9 in the mounted state. If two contact regions 14 are provided on a lateral contact surface 13 of a precast concrete part 9, it is also sufficient if only one of the contact regions 14 contacts a contact region 14 of an adjacent precast concrete part 9 in the vertical joint.
  • the contact surfaces 13 may also be designed as smooth, flat surfaces without contact areas 14, as shown in Fig. 5. Since the cohesion of the individual precast concrete parts 9 of a concrete segment 7 is significantly or even exclusively caused by the frictional forces in the horizontal joints 6, the contact areas 14 are not essential. It is also harmless for the rigidity of the tower 1 for the same reason when the vertical joints 8 open slightly under load or, if necessary, due to mounting tolerances, a vertical joint 8 also remains completely open. In any case, due to the load-bearing connection by the biasing force of the vertical clamping members 18, neither casting, nor screwing the vertical joints 8 required.
  • the precast concrete elements 9 are therefore provided at its upper end in the area below the vertical joint 8, which is usually center of the precast concrete parts 9 depending on the offset angle, provided with an additional reinforcement 15 or increased reinforcement content.
  • the ring segment-shaped precast concrete elements 9 are designed as exact common parts.
  • a simple production of precast concrete 9 is possible with as few formwork.
  • the individual concrete segments 7 are not composed of two, but of three or more precast concrete 9.
  • the individual precast concrete parts 9 are thereby smaller and can thus be easily transported to the site or made on site by means of transportable formwork on the site.
  • the individual precast concrete parts 9 are assembled by means of horizontal screw 19 to a concrete segment 7.
  • two screws 20 per vertical joint 8 offset in height and introduced from the inside at an angle in the joint.
  • the Verschraubungsstellen are easily accessible via recesses 22 from the inside 16 ago, so that the glands 19 easily mounted or, if necessary, can be easily removed again.
  • the screw 19 includes in each case a dowel 21 which is cast in the region of a lateral contact surface 13 of a precast concrete part 9, and a screw 20 which is inserted through the recess 22 of an adjacent precast concrete part 9 into the dowel 21.
  • the fittings 19 are provided as mounting aids, without serving the power transmission in normal operation. Only in extreme cases, for example in the case of strong wind loads, are they used to transmit power.
  • the concrete segment 7 can thus be assembled by means of the screw 19 in a quick and easy manner at the installation site and placed on the already existing tower section 3.
  • the screw 19 are designed so that they carry the weight of the component thus formed.
  • the precast concrete parts 9 are thus already connected to each other before the tensioning of the vertical clamping members 18 and thus already secured during assembly of the tower section 3.
  • the screw 19 can be left in the precast concrete after completion of the tower to save the removal step or to ensure the inherent stability of the tower during maintenance, for example, when replacing vertical tendons 18, or during decommissioning.
  • FIG. 6 shows a precast concrete part 9 suitable for such a tower section 3 in a front view from the inside 16 and FIG. 7 in a plan view.
  • the precast concrete part 9 has an outer side 10, an inner side 16, an upper contact surface 11, a lower contact surface 12 and two lateral contact surfaces 13. Like the precast concrete part of FIG. 3, these precast concrete parts 9 may also have contact regions 14. However, the contact surfaces 13 may also be formed as completely flat surfaces.
  • the height H of the ring segment-shaped precast concrete parts 9 is substantially smaller than the width B. Preferably, the height H of the precast concrete parts is less than 3 m. The precast concrete 9 can therefore be transported in a horizontal position, without exceeding the maximum road transport width.
  • the precast concrete parts 9 have a height of less than 2.50 m, since they can then be transported by conventional transport vehicles.
  • the height of the precast concrete parts 9 is oriented in the transverse direction of the transport vehicle. It is particularly advantageous that the prefabricated concrete parts 9 are stackable due to their shell-shaped training and thus several precast concrete parts 9 can be transported lying one above the other.
  • the precast concrete parts 9 are produced by means of a formwork (not shown) as Wegmaschine. This means that the precast concrete parts 9 already reach their ready-to-install final contour by casting without any further processing step being required.
  • the precast concrete 9 are here molded with such high accuracy that the upper contact surface 1 1 and the lower contact surface 12 are aligned without parallel processing exactly parallel to each other.
  • the two lateral contact surfaces 13 are exactly perpendicular to the upper and lower contact surfaces 1 1, 12 and aligned at an exact angle to each other.
  • the angle between the two lateral contact surfaces 13 each of a precast concrete element 9 is at three concrete elements 9 per concrete segment 7 120 ° and four concrete elements 9 per concrete segment 7 90 °.
  • the formwork (not shown) for the production of precast concrete parts contains for this purpose in each case two end formworks and two side formworks which are each independently adjustable with respect to the basic formwork. Later work to produce a plane parallelism each of two opposing contact surfaces 1 1, 12, are therefore not required. Likewise, the orientation of the lateral contact surfaces 13 to the upper and lower contact surfaces 1 1, 12 each formed so precisely that when assembling several precast concrete 9 to an annular concrete segment 7 no balancing mass must be introduced into the vertical joints.
  • FIG. 8 shows another embodiment of a tower 1 in a schematic cross-sectional representation. Like the tower section 3 shown in FIG. 4, the tower section 3 shown here is constructed from a plurality of annular concrete segments 7, which are arranged one above the other.
  • the stacked concrete segments 7 are in turn by means of vertical tendons 18, which extend between a head bearing, here again a transition piece 5, and a mediatorlager, here again the foundation 2 extend.
  • the vertical clamping members 18 are attached at least at one of its two ends, but preferably at its two ends, by means of a clamping anchor and thus re-tensioned.
  • the vertical clamping members 18 also extend outside the concrete cross-section of the concrete segments 7 in the inner space 24, which is enclosed by the inner wall 23 of the tower section 3.
  • the inner wall 23 is in turn composed of the individual inner sides 16 of the individual concrete segments 7 or of the individual precast concrete parts 9 of the concrete segments 7 (see FIGS. 10-12).
  • the individual concrete segments 7 may be formed in one piece annular or as previously described with reference to FIGS 2-7, be composed of a plurality of ring segment-shaped precast concrete 9.
  • FIG. 8 according to the present illustration of one of the concrete segments 7, on its inner side 16 a projection 25 against which the vertical clamping members 18 abut.
  • the vertical clamping members 18 can thus be fixed by means of frictional forces on the inner wall 23 and on the projection 25, so that the free oscillation length of the vertical clamping members 18 is reduced and undesired transverse movements can be prevented. It is thus possible, even very high towers 1 without an additional, active intermediate attachment of the tendons 18 perform.
  • both the concrete segment 7 or precast concrete 9 with the projection 25 is particularly easy to produce, since the projection 25 can be well integrated into the formwork.
  • the assembly is facilitated on the site, since no additional mounting steps are required for this intermediate mounting of the vertical clamping members 18.
  • the vertical clamping members 18 are automatically guided over the projection 25 and are fixed by the friction on this after the bracing, in which a contact force on the vertical clamping members 18. It is particularly advantageous that such a fixation of the vertical clamping members 18 to a projection 25 with different types of tower sections 3 and towers 1 is applicable.
  • the molded-on projection 25 can be used not only in conjunction with one-piece annular concrete segments 7, but also with concrete segments 7 composed of a plurality of precast concrete elements 9.
  • vertical clamping members 18 In the present case, only two vertical clamping members 18 are shown by way of example. It is understood that in a real tower section 3 at least three, but usually a plurality of vertical tendons 18 are arranged distributed over the inner circumference of the tower section 3.
  • the vertical clamping members 18 can be distributed equidistantly over the inner circumference, or it can be individual groups of vertical tendons 18 are formed, which are also distributed equidistantly over the inner circumference, in which case gaps are present between individual such groups.
  • a vertical clamping member 18 extends next to the next, so that the entire inner circumference of the tower section 3 is covered with vertical clamping members 18.
  • the projection 25 is circumferentially formed over the entire inner circumference of the tower section 3 and the concrete segment 7 according to the representation shown here. It can thus be used in any towers 1 with any number and arrangement of vertical tendons 18. Furthermore, in the present case, a tower section 3 is shown in which only one projection 25 is provided on the inner wall 23. Of course, it is also possible to arrange a further projection 25 offset in height to the first projection 25 of the inner wall 23 in order to achieve a better fixation of the vertical clamping members 18 at very high towers 1. Furthermore, it is understood that present illustration with only five concrete segments 7 is to be understood merely as an example and that real tower sections 3 are constructed from substantially more concrete segments 7 or precast concrete elements 9.
  • Figure 9 shows a cross section of a one-piece, annular concrete segment 7, which also has a projection 25 on its inner side 16.
  • the vertical clamping members 18 are guided over the at least one projection 25 at a deflection angle ⁇ .
  • abutment at a deflection angle ⁇ particularly high contact forces can be generated on the tensioning members 18, so that they are particularly well fixed by high frictional forces.
  • a guide of the vertical clamping members 18 under a Deflection angle ⁇ also possible in combination with segment-shaped precast concrete 9 or an in-situ concrete tower.
  • Figure 10 shows a ring segment-shaped precast concrete 9, which can be assembled together with other ring segment-shaped precast concrete 9 to form an annular concrete segment 7.
  • the ring-segment-shaped precast concrete element 9 has an outer side 10, an inner side 16, two lateral contact surfaces 13 and an upper contact surface 11.
  • a lower contact surface 12 (see Figures 2-4) is not visible in the present illustration.
  • the ring-segment-shaped precast concrete part 9 in turn has on its inner side 16 via a projection 25, which is preferably like the projection 25 shown in Figures 8 and 9 console-like or flange-shaped and preferably has a rectangular cross-section. In this case, the edges of the rectangular cross section facing the interior 24 are preferably rounded in order to avoid damaging effects of the projection 25 on the vertical clamping elements 18.
  • prefabricated concrete parts 9 are then arranged in the assembly of the tower section 3 in such a way that the projections 25 run there where later on vertical clamping elements 18 are to be drawn.
  • Figure 1 1 shows another embodiment of a precast concrete part 9, in which a console-like projection 25 does not extend over the entire inner side 16.
  • a console-like projection 25 does not extend over the entire inner side 16.
  • Such an embodiment can for example for Mold removal be favorable and helps that the lateral contact surfaces 13 can be formed flat in a particularly simple manner or processed, for example, be ground, can be.
  • FIG. 12 shows a further embodiment of a ring-segment-shaped precast concrete part 9, in which a plurality of projections 25 are arranged at the same height but distributed over the inner circumference of the precast concrete part 9 on the inner side 16.
  • the projections 25 are again provided in the areas of the tower section 3, in which the later arrangement of vertical tendons 18 is planned.
  • annular concrete segment 7 it would also be conceivable to provide an annular concrete segment 7 with such a plurality of projections 25 distributed over the inner circumference.
  • FIG. 13 shows another embodiment of a ring-segment-shaped precast concrete element 9 with a plurality of projections 25 distributed over the inner circumference of the precast concrete element 9.
  • the projections 25 are not flat on their side facing the interior 24 of the tower, as in FIG but have a concave, facing the interior 24 recess.
  • the tendons 18 lie at the lowest point of the concave recess and are thereby particularly well fixed in their transverse direction or are automatically reset after a possible deflection. Especially with wire tendons such a design is advantageous.
  • the production is facilitated by the fact that the individual precast concrete parts 9 can be easily positioned and no complex connections of the vertical joints 8 or the precast concrete parts 9 a concrete segment 7 are required.
  • the Vergusslose Zusannnnenit the precast concrete 9 to concrete segments 7 and the concrete segments 7 to a tower section 3 made of concrete can be facilitated by the high-precision production of precast concrete parts 9 as a common part. Due to the unguarded design of the horizontal joints and vertical joints and the composite guide the vertical tendons the assembly, maintenance and dismantling of the tower are facilitated. For easy preparation of the concrete segments 7 and the precast concrete parts 9 and for easy installation of the tower section 3 while fixing the vertical clamping members 18 contributes to the projection 25 at.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

L'invention concerne une tour (1), destinée à une éolienne, qui comprend au moins une partie de tour (3) en béton qui se compose, avec formation de joints horizontaux (6), d'une pluralité de segments annulaires en béton (7) superposés. Chaque segment en béton (7) est composé, avec formation de joints verticaux (8), d'au moins deux éléments préfabriqués en béton (9), en forme de segment annulaire, qui sont disposés de façon adjacente et qui comportent chacun un côté extérieur (10), un côté intérieur (16) ainsi qu'une face de contact supérieure, une face de contact inférieure et deux faces de contact latérales (11, 12, 13). Les segments en béton (7) de la ou des parties de tour (3) sont reliés entre eux dans la direction verticale de la tour (1) uniquement par des moyens de serrage verticaux. Les joints verticaux (8) de deux segments en béton (7) superposés sont disposés de manière décalée entre eux dans la direction circonférentielle des segments en béton (7). Un élément préfabriqué en béton (9) d'un segment en béton supérieur (7) des deux segments en béton superposés (7) s'engage par-dessus un joint vertical (8) d'un segment en béton (7) sous-jacent des deux segments en béton (7) superposés. Les segments en béton (7) superposés sont serrés les uns aux autres par les moyens de serrage verticaux, en particulier des éléments de serrage verticaux (18), de façon à réaliser une liaison par friction résistante aux charges.
EP16758160.2A 2015-09-15 2016-08-30 Tour pour éolienne constituée d'éléments préfabriqués en béton en forme de segment annulaire Withdrawn EP3350391A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015115520 2015-09-15
DE102016115042.8A DE102016115042A1 (de) 2015-09-15 2016-08-12 Turm für eine Windkraftanlage aus ringsegmentförmigen Betonfertigteilen
PCT/EP2016/070353 WO2017045907A2 (fr) 2015-09-15 2016-08-30 Tour pour éolienne constituée d'éléments préfabriqués en béton en forme de segment annulaire

Publications (1)

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EP3350391A2 true EP3350391A2 (fr) 2018-07-25

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US (1) US10538936B2 (fr)
EP (1) EP3350391A2 (fr)
JP (1) JP2018532919A (fr)
CN (1) CN108138510B (fr)
AU (1) AU2016321746A1 (fr)
CA (1) CA2998534A1 (fr)
DE (1) DE102016115042A1 (fr)
MX (1) MX2018003176A (fr)
RU (1) RU2018113170A (fr)
WO (1) WO2017045907A2 (fr)

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JP7122265B2 (ja) * 2019-01-29 2022-08-19 鹿島建設株式会社 洋上風力発電用基礎構造および洋上風力発電用基礎構造の施工方法
CN110410276A (zh) * 2019-08-06 2019-11-05 上海市机电设计研究院有限公司 可调节竖缝缝隙的风电塔筒预制环片
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CN112112767A (zh) * 2020-09-15 2020-12-22 重庆大学 一种用于风电机组钢混塔筒的组合结构转接构造
CN112922788A (zh) * 2021-03-09 2021-06-08 中国电建集团西北勘测设计研究院有限公司 一种风机塔筒预制混凝土构件及风机塔筒
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Publication number Publication date
US20180251997A1 (en) 2018-09-06
JP2018532919A (ja) 2018-11-08
US10538936B2 (en) 2020-01-21
CA2998534A1 (fr) 2017-03-23
DE102016115042A1 (de) 2017-03-30
CN108138510A (zh) 2018-06-08
WO2017045907A3 (fr) 2017-05-26
CN108138510B (zh) 2021-01-22
RU2018113170A3 (fr) 2020-02-12
AU2016321746A1 (en) 2018-04-12
WO2017045907A2 (fr) 2017-03-23
MX2018003176A (es) 2018-09-26
RU2018113170A (ru) 2019-10-16

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