EP2857614A1 - Tour de béton formée de pièces préfabriquées - Google Patents

Tour de béton formée de pièces préfabriquées Download PDF

Info

Publication number
EP2857614A1
EP2857614A1 EP13187277.2A EP13187277A EP2857614A1 EP 2857614 A1 EP2857614 A1 EP 2857614A1 EP 13187277 A EP13187277 A EP 13187277A EP 2857614 A1 EP2857614 A1 EP 2857614A1
Authority
EP
European Patent Office
Prior art keywords
precast
pieces
precast pieces
tower
section
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Withdrawn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
EP13187277.2A
Other languages
German (de)
English (en)
Inventor
Francisco Jose Saenz Saenz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP13187277.2A priority Critical patent/EP2857614A1/fr
Priority to PCT/EP2014/071213 priority patent/WO2015049362A1/fr
Publication of EP2857614A1 publication Critical patent/EP2857614A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • E04H12/16—Prestressed structures

Definitions

  • the present invention relates to hollow concrete towers formed with precast pieces, especially but not exclusively, such as those that are used in wind turbines.
  • WO 2006/111597 describes a tower structured by a set of precast pieces of reduced thickness stiffened by an internal structure of horizontal and vertical ribs where horizontal and vertical tensor cables are used as attachments means of the precast pieces.
  • tensor cables are inserted in through-tubes (attached to the inner wall of the tower) and are subsequently filled with mortar. Consequently, according with this invention, the re-tensioning and/or replacement of cables during a maintenance operation is considerably complex or even impossible.
  • tensor cables described in WO 2006/111597 are also subjected to considerably high tensions, usually in the range of 100 - 300 ton-force (tf) for a 100m long standard tower, which can only be obtained by using special and expensive machinery.
  • WO 03/069099 describes a tower structured by a set of sections formed by several precast pieces where vertical tensor cables are used as primary attachments means of the precast pieces. Said vertical cables need to be attached to the foundations of the tower, which increases the difficulty of the mounting and maintenance operations. As in the preceding case, tensor cables are also subjected to considerably high tensions, usually in ranges similar to the one mentioned above. Moreover, large cranes are required for putting the vertical tensor cables in place.
  • wind turbine towers can be located in places difficult to be accessed by trucks and cranes, which are capable of transporting and/or lifting heavy loads to great heights.
  • the present invention is directed to solving those problems.
  • the basic object of the present invention is to provide a hollow tower structured in a plurality of vertical sections formed by several concrete precast pieces configured with outer and inner walls, upper and lower horizontal bases and side walls having sufficient strength to withstand the loads foreseen, facilitating its mounting and the maintenance tasks.
  • a hollow tower where the precast pieces of two contiguous vertical sections are disposed staggered so that each precast piece of the upper section rests on at least two precast pieces of the lower section and where the attachment means of the precast pieces comprise tensor cables which are arranged inside the tower linking in zigzag each precast piece of a vertical section with the adjacent precast pieces of the lower section and forming tensioning rings that join them together.
  • towers according with the invention can reach higher heights than the prior art towers.
  • Said tensioning rings can have zigzag patterns of different forms, for example, a sawtooth zigzag pattern or a straight ends zigzag pattern.
  • the attachment means of the precast pieces of the present invention are disposed in the interior face of the tower, operators can easily access to the tensor cables and are less exposed to the wind (and other potentially negative external climatologic factors) during the mounting and maintenance tasks, which results in simplified mounting operations, increased security and less interruptions due to the excessive wind and/or adverse climatology (and consequently, in quicker mounting and maintenance procedures).
  • review operations in the tower of the invention can be easily performed, for example by applying extensiometric gauges to the tensor cables. Maintenance and reparation operations can be also performed easily.
  • each vertical section of the tower is formed by equal precast pieces.
  • the precast pieces comprise an anchoring element for said tensor cables having an upper conduit and a lower conduit for the passage thereof, said upper and lower conduits being located at a different distance from the inner wall of the precast pieces, and the cables that join each precast piece of a vertical section with the adjacent precast pieces of the lower section are arranged so that they pass, respectively, by their upper and lower conduits.
  • the precast pieces also comprise interlocking means constituted by female recesses in their lower base and male inserts in its upper base configured to form joint arrangements between two precast pieces of two contiguous vertical sections that are sealed with grout. These joint arrangements constitute vertical attachment means of the precast pieces in addition to the tensioning rings mentioned above.
  • female recesses are disposed in the upper base of the precast pieces and male inserts in their lower base.
  • the tower 11 of the invention is a tower structured in vertical sections 13, each section being formed by several precast pieces 15 (see figures 4a and 4b ).
  • the precast pieces 15, configured with outer and inner walls 51, 53, upper and lower horizontal bases 57, 55 and side walls 59, 61, have, preferably, a dowel shape as illustrated in Figures 1a, 1b , 3a , 3d and are made with high strength concrete and inner steel bars 16.
  • the tower 11 may have a frusto-conical or cylindrical shape as illustrated in Figures 4a and 4b .
  • all the vertical sections 13 have the same diameter while in the first case they have different diameters and different number of precast pieces 15 at different vertical sections 13, for example 6 precast pieces in the first vertical section and 2 precast pieces in the last vertical section.
  • the height of the precast pieces 15 is comprised between 1.2 - 3 m and the ratio width/height is greater than 2. They are therefore precast pieces 15 of a relatively small size, and consequently easier to transport, compared with the sizes of other pieces known in the art (which are frequently between 15 and 25 m).
  • Precast pieces 15 may also have shapes that allow to build a tower 11 with a polygonal base.
  • precast pieces 15 may also have an outer wall 51 which is slightly longer, in the range of tens of cm, than the inner wall 53.
  • this particular arrangement makes the gap 90, defined between the inner walls of two contiguous precast pieces 15 of a same vertical section 13 (and traditionally of 1-2.5 cm in size), to be slightly bigger than the gap 91, defined between the outer walls of two contiguous precast pieces 15 of a same vertical section 13 (and traditionally of 3-5 cm in size), thereby easing the assembly of said precast pieces 15 to form a tower 11.
  • the tower 11 is structured with the precast pieces 15 of each vertical section 13 mounted staggered with respect to the pieces of the lower section (see Figure 5 ) and joined by two attachment means: on the one hand, interlocking means as vertical attachment means between the precast pieces 15 of a vertical section 13 with the precast pieces of the lower vertical section; on the other hand tensor cables 17 to link together in zigzag by the inside the tower 11 the precast pieces 15 of a vertical section with the adjacent precast pieces of the lower section and to form a tensioning ring that joins them together.
  • the interlocking means comprise two female recesses 31, 33 and two male inserts 35, 37 which can be located respectively on the lower and upper bases 55, 57 of the precast pieces 15 (embodiment shown in Figures 1a, 1b, 2a, 2b ) or, alternatively, in the opposite configuration (embodiment shown in Figure 3d ).
  • the male inserts 35, 37 are made of steel and configured with a cross-shaped head 36 and a shank 40 which is screwed into a sheath 41 embedded in the precast pieces 15.
  • the joints between male inserts 35, 37 and female recesses 31, 33 are filled with a slurry of high strength concrete which is poured through holes 39 (see Figure 2a ).
  • This particular configuration i.e., the embodiment in the form of a cross-shape head gives the male insert 36 a bigger contact surface with the grout, which results in a more cohesive connection.
  • male inserts 35, 37 absorb part of the shear stress to which the tower 11 is subjected and the staggering of the precast pieces 15 of a vertical section 13 of the tower 11 with respect to the precast pieces 15 of the lower vertical section implies that the two female recesses 31, 33 of a precast piece 15 engage with the male inserts 37, 35 of two different precast pieces 15 of the lower vertical section thereby enhancing the strength of the tower 11.
  • EPDM Ethylene Propylene Diene Monomer
  • the precast pieces 15 comprise anchoring elements 21 for tensor cables 17 which are embedded in the precast pieces 15 by their inner wall 53.
  • These anchoring elements 21 comprise an upper conduit 23 and a lower conduit 25 for the passage of tensor cables 17.
  • a tensor cable 17 passes through the upper conduits 23 of the precast pieces 15 of the central vertical section 13 and through the lower conduits 25 of the precast pieces 15 of the lower section and another tensor cable 17 passes through the lower conduits 25 of the precast pieces 15 of the central vertical section 13 and by upper conduits 23 of the precast pieces 15 of the upper section.
  • the upper and lower conduits 23, 25 are located at a different distance from the inner wall of the precast pieces 15 (contrary to the embodiment shown in Figure 2b ).
  • the tensor cables 17 allow "tying" two vertical sections 13 of the tower 11 in a more efficient manner.
  • the tensioning ring created by tensor cables 17 has the form of a sawtooth zigzag pattern.
  • the tensioning ring has, in turn, the form of a straight ends zigzag pattern.
  • anchoring elements for tensor cables 17 comprise U shaped bars 71, whose end parts (or legs) are embedded in the precast pieces 15 by their inner wall 53, while the central part of said U shaped bars 71 slightly protrude from the inner wall 53, forming an eye through which tensor cables 17 can be passed.
  • Recesses 72 can be also optionally provided in the area surrounding said U shaped bars.
  • the tensor cables 17 by means of, for example, a portable electric tensioning pump or a portable mono-cable tensor they are arranged in the form of a ring which starts and ends at the same point in which is placed a double cone terminal (a cone for the start of the cable and other for the ring closure).
  • side walls 59, 61 of the concrete precast pieces 15 can be optionally provided of slots 80, 81, shown in figure 3d , and intended to reinforce the horizontal attachment of two contiguous precast pieces 15 in the same vertical section 13. To this end, the space defined by said contiguous slots 80, 81 is sealed with grout.
  • At least one corrugated bar is held in such space.
  • precast pieces 15 can also be provided with housings 73, disposed on the peripheral areas of the upper horizontal base 57 closer to side walls 59, 61, being each housing 73 intended to house one of the ends of an U shaped staple 75 and being each one of said staples 75 intended, in turn, to join two contiguous precast pieces15 belonging to the same vertical section 13.
  • the space between housings 73 and the U shaped staples 75 can be sealed with grout.
  • Grooves 74 intended to ease the housing of staples 75 in housings 73, can be optionally provided.
  • the foundation of the tower 11 can be done by, for example, a reinforced concrete footing 62.
EP13187277.2A 2013-10-03 2013-10-03 Tour de béton formée de pièces préfabriquées Withdrawn EP2857614A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13187277.2A EP2857614A1 (fr) 2013-10-03 2013-10-03 Tour de béton formée de pièces préfabriquées
PCT/EP2014/071213 WO2015049362A1 (fr) 2013-10-03 2014-10-02 Tour en béton formée de pièces préfabriquées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13187277.2A EP2857614A1 (fr) 2013-10-03 2013-10-03 Tour de béton formée de pièces préfabriquées

Publications (1)

Publication Number Publication Date
EP2857614A1 true EP2857614A1 (fr) 2015-04-08

Family

ID=49274551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13187277.2A Withdrawn EP2857614A1 (fr) 2013-10-03 2013-10-03 Tour de béton formée de pièces préfabriquées

Country Status (2)

Country Link
EP (1) EP2857614A1 (fr)
WO (1) WO2015049362A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017046624A1 (fr) * 2015-09-17 2017-03-23 Soletanche Freyssinet Segment circonférentiel d'un anneau en béton pour former un mât de support
US10024306B2 (en) 2013-08-22 2018-07-17 Tindall Corporation Structure including non-structural joint
EP3438381A1 (fr) * 2017-08-02 2019-02-06 Pacadar S.A. Structure de support pour générateurs d'éoliennes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015111109A1 (de) 2015-07-09 2017-01-12 Vensys Energy Ag Turm einer Windkraftanlage
DE102016115042A1 (de) 2015-09-15 2017-03-30 Max Bögl Wind AG Turm für eine Windkraftanlage aus ringsegmentförmigen Betonfertigteilen
CN106640538A (zh) * 2016-10-08 2017-05-10 霍尔果斯新国金新能源科技有限公司 塔筒构件及其灌浆方法
CN113482860A (zh) * 2021-08-27 2021-10-08 北京银泰建构预应力技术股份有限公司 一种用于风电机组的全装配式预应力混凝土塔基

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447310A1 (fr) * 1990-03-12 1991-09-18 Bouygues Offshore Structure tubulaire en béton, notamment pour structure en mer
WO2003069099A1 (fr) 2002-02-12 2003-08-21 Mecal Applied Mechanics B.V. Aerogenerateur
DE20313486U1 (de) * 2003-05-24 2003-11-27 Maaß GmbH Turmbauwerk mit Spannelementen
WO2006111597A1 (fr) 2005-04-21 2006-10-26 Structural Concrete & Steel, S.L. Tour modulaire prefabriquee
WO2010044380A1 (fr) * 2008-10-15 2010-04-22 株式会社竹中工務店 Structure en forme de tour et procédé pour sa construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447310A1 (fr) * 1990-03-12 1991-09-18 Bouygues Offshore Structure tubulaire en béton, notamment pour structure en mer
WO2003069099A1 (fr) 2002-02-12 2003-08-21 Mecal Applied Mechanics B.V. Aerogenerateur
DE20313486U1 (de) * 2003-05-24 2003-11-27 Maaß GmbH Turmbauwerk mit Spannelementen
WO2006111597A1 (fr) 2005-04-21 2006-10-26 Structural Concrete & Steel, S.L. Tour modulaire prefabriquee
EP1876316A1 (fr) * 2005-04-21 2008-01-09 Structural Concrete & Steel S.L. Tour modulaire prefabriquee
WO2010044380A1 (fr) * 2008-10-15 2010-04-22 株式会社竹中工務店 Structure en forme de tour et procédé pour sa construction

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10024306B2 (en) 2013-08-22 2018-07-17 Tindall Corporation Structure including non-structural joint
WO2017046624A1 (fr) * 2015-09-17 2017-03-23 Soletanche Freyssinet Segment circonférentiel d'un anneau en béton pour former un mât de support
EP3438381A1 (fr) * 2017-08-02 2019-02-06 Pacadar S.A. Structure de support pour générateurs d'éoliennes
WO2019026056A3 (fr) * 2017-08-02 2019-11-28 Pacadar, S.A. Structure de support pour générateurs d'énergie éolienne
CN111065788A (zh) * 2017-08-02 2020-04-24 帕卡达尔有限公司 用于风力驱动的发电机的支撑结构
EP3683383A1 (fr) * 2017-08-02 2020-07-22 Pacadar S.A. Structure de support pour générateurs d'éoliennes et son procédé de correction de verticalité
JP2020529539A (ja) * 2017-08-02 2020-10-08 パカダール エス．エー． 風力発電機用支持構造物
CN111065788B (zh) * 2017-08-02 2021-09-10 帕卡达尔有限公司 用于风力驱动的发电机的支撑结构
US11118570B2 (en) 2017-08-02 2021-09-14 Pacadar, S.A. Support structure for wind-driven power generators

Also Published As

Publication number Publication date
WO2015049362A1 (fr) 2015-04-09

Similar Documents

Publication Publication Date Title
EP2857614A1 (fr) Tour de béton formée de pièces préfabriquées
JP4488745B2 (ja) ウインドタービン
CA2585534C (fr) Adaptateur de pylone, methode de construction d'une fondation de pylone, et fondation de pylone
CN103669967B (zh) 混合塔式结构和用于建造该混合塔式结构的方法
JP4701047B2 (ja) 風力発電タワーの構築方法
US10598154B2 (en) Wind turbine tower
MX2007012310A (es) Torre modular prefabricada.
EP2981654B1 (fr) Ensemble tour pour une structure de tour
CA2713368A1 (fr) Element de tour
CN210827541U (zh) 塔筒基础的中心筒构件、具有其的中心筒和塔筒基础
US10519687B2 (en) Method of erecting a tethered wind turbine tower
KR101298399B1 (ko) 철근받침구조체
KR101358435B1 (ko) 풍력 발전기용 복합단면타워의 연결조립체
CN111287900A (zh) 混凝土塔筒的上塔筒段和具有其的混凝土塔筒

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20131003

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20151009