WO2022032403A1 - Procédé pour effectuer une liaison d'assemblage (clé de cisaillement) entre des éléments préfabriqués pour la construction d'une tour éolienne en béton ou analogue - Google Patents

Procédé pour effectuer une liaison d'assemblage (clé de cisaillement) entre des éléments préfabriqués pour la construction d'une tour éolienne en béton ou analogue Download PDF

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Publication number
WO2022032403A1
WO2022032403A1 PCT/CL2020/050091 CL2020050091W WO2022032403A1 WO 2022032403 A1 WO2022032403 A1 WO 2022032403A1 CL 2020050091 W CL2020050091 W CL 2020050091W WO 2022032403 A1 WO2022032403 A1 WO 2022032403A1
Authority
WO
WIPO (PCT)
Prior art keywords
joint
shear
shear key
wind turbine
tower
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.)
Ceased
Application number
PCT/CL2020/050091
Other languages
English (en)
Spanish (es)
Inventor
Mark WOERING
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.)
Mecal Intellectual Property And Standards BV
Original Assignee
Mecal Intellectual Property And Standards BV
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 Mecal Intellectual Property And Standards BV filed Critical Mecal Intellectual Property And Standards BV
Priority to PCT/CL2020/050091 priority Critical patent/WO2022032403A1/fr
Publication of WO2022032403A1 publication Critical patent/WO2022032403A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • 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
    • 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
    • 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
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention patent application is directed to a method for carrying out a locking joint (Shear Key) between the prefabricated elements for the construction of a wind tower (e.g. advanced tower system (ATS)). Specifically, it addresses a method that provides interlocking joints by means of a grout that separates from precast concrete, causing a smooth crack to form in the shape of a predefined interlocking joint. When the wall is in tension and the smooth crack opens a few millimeters, this is where the locking joint will provide shear transfer with no negative tensile stress effects on the wall.
  • ATS advanced tower system
  • precast concrete towers are being promoted to overcome the high cost and limitations of traditional steel as a means of tower construction.
  • the precast segment construction method requires the presence of segment joints to transfer loads between neighboring segments, stressing the importance of ensuring structural safety and serviceability.
  • research has been carried out dedicated to the behavior of joints by segments.
  • the shear behavior of the joints in segmented precast samples with shear keys has been studied considering different types of joints and levels of lateral force to develop high-strength precast concrete wind towers. This is how there are analyzes to examine the load-displacement relationship according to the type of shear keys and, in case of failure, the modes that the locking joints adopt according to the crack pattern in case of failure.
  • Locking joints could transfer shear and twisting forces across a horizontal joint, even when it is pulling apart a bit. That would result in a transfer of shear and torque through the entire joint, not just the compression portion.
  • ATS towers among other types of segmented concrete towers use ganged joints. These joints are in the form of standard toothed locking joints. If the joint were to crack in a load box with vertical stress on the wall, it would logically crack as illustrated in Figure 5.
  • Locking joint configurations are tongue and groove configurations, cam and socket configurations, or others commonly used in structural members.
  • Figure 1 shows how the transverse joint faces 13 can include a locking joint configuration that increases the shear and bending stress transmission capacity between the annular sections.
  • figure 2 shows the incorporation of bicones by means of mounting positioners 40 that allow centering the position of the wall pieces 10 when they are superimposed, where the vertical joining faces of two adjacent wall pieces (10) of the same annular section are arranged opposite each other and lack structural screws, structural bolts, local post-tensioning, annular post-tensioning around an annular section, interlocking joint configurations of the opposing vertical joint faces or concrete accessories cast in in situ that act as structural connectors for the transmission of structural stresses during the service life of the structure.
  • the difference that this publication presents with respect to the present invention is that the publication does not provide that the grouped interlocking joints be separated from the adjacent concrete by a release agent or a thin material that is placed in the joint on one side of the joint. locking union.
  • segmented elements of precast concrete are used.
  • the use of concrete in the publication allows very small tolerances.
  • FIG. 1 Publication US8307593 (B2), as illustrated in Figure 3 (Prior Art), describes an adapter section (270) that can be used to join an upper section (112) to the lower concrete section (214).
  • the adapter section 270 may comprise a prefabricated member in the form of a slab, ring, or cylinder.
  • Adapter section 270 may also have any suitable shape as desired in the specific application.
  • the adapter section (270) is configured to substantially align the loading forces
  • Publication WO2018193281 defines that the respective geometries of the upper face of the first segment and of the lower face of the second segment define at least one shear key when they cooperate with each other.
  • the locking joint is defined by a mortise and a tenon, respectively, defined within an element between the upper face of the first segment and the lower face of the second segment.
  • the respective geometries of the upper face (UFi-1) of the first segment (Si-1) and of the lower face (LFi) of the second segment (Si) define at least one locking joint (K) by cooperating with some and others.
  • the difference with respect to the invention lies in the fact that the locking union is carried out with a mortise and a tenon and not by means of a locking union that is filled with a grout, achieving that the union adopts the shape of each locking union and thus increase resistance to stress.
  • Patent registration CL55121 describes a vertical precast concrete stepped tower adapted to support a wind turbine, comprising a foundation base member positioned to support the tower, a first plurality of substantially identical precast concrete cylindrical or annular lower tower segments and lower tower segments
  • the invention differs from the other solutions by the use of a grout that allows large prefabricated elements with reasonable tolerances.
  • Figure 1 corresponds to a prior art shear key joint scheme.
  • Figure 2 corresponds to a prior art shear key joint scheme.
  • Figure 3 corresponds to a prior art shear key joint scheme.
  • Figure 4 corresponds to a prior art shear key joint scheme.
  • Figure 5 Corresponds to a front section view that exemplifies if a joint cracked in a load box with vertical stress on a wall.
  • Figure 6 Corresponds to a side sectional view exemplifying if a joint were to crack in a load box with vertical stress on a wall
  • Figure 7 corresponds to a top section view of a horizontal section through the joints.
  • the invention consists of a method for carrying out a Shear Key joint between precast concrete segments for wind turbine construction (for example, but not limited to an advanced tower system (ATS)).
  • the method consists of providing interlocking joints that are filled by a grout that is placed on only one side of a precast segment, causing a smooth crack to form in the shape of a predefined interlocking joint.
  • ATS advanced tower system
  • the wall is in tension and the smooth crack opens, this is where the locking joint will provide shear transfer and allow for significantly higher locking and shear stress.
  • the method comprises having grouped locking joints with a predefined shape.
  • the method also comprises preventing the bonding of the grout to a section of precast concrete (of the two that are joined and that between them forms a shear key), by means of a release agent or a thin layer of material. unbonded, so as to prevent adhesion between prefabricated segments of the tower and to predefine the shape that the actual crack will take when subjected to stress, that is, the shape of a default shear key joint.
  • the method is suitable for a total of extreme combinations of bending, shear and torsion, where its application is given in a system consisting of:
  • this Bredt shear flow diagram has lever arms the size of the full cross-section. It offers much more torsional strength than a horizontally cracked joint with a smooth crack. In case of a smooth horizontal crack the lever arms reduce the compression section to the size of the wall thickness.
  • a non-stick material (4) that forms a thin layer that allows each prefabricated segment to be kept separate and not joined. So when the grout (2) is incorporated, it only adheres to one of the faces of the prefabricated segments.
  • the non-stick material used is oil. In this way, the grout (2) adheres only to one of the faces of the prefabricated segments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un procédé qui permet des liaisons d'assemblage au moyen d'un coulis qui sépare le béton préfabriqué, permettant la formation d'une fissure légère présentant la forme d'une liaison d'assemblage prédéfinie. Lorsque la paroi est sous tension et la fissure légère s'ouvre de quelques millimètres, la liaison d'assemblage assure un transfert de coupe sans effets négatifs de stress de tension sur la paroi.
PCT/CL2020/050091 2020-08-13 2020-08-13 Procédé pour effectuer une liaison d'assemblage (clé de cisaillement) entre des éléments préfabriqués pour la construction d'une tour éolienne en béton ou analogue Ceased WO2022032403A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CL2020/050091 WO2022032403A1 (fr) 2020-08-13 2020-08-13 Procédé pour effectuer une liaison d'assemblage (clé de cisaillement) entre des éléments préfabriqués pour la construction d'une tour éolienne en béton ou analogue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CL2020/050091 WO2022032403A1 (fr) 2020-08-13 2020-08-13 Procédé pour effectuer une liaison d'assemblage (clé de cisaillement) entre des éléments préfabriqués pour la construction d'une tour éolienne en béton ou analogue

Publications (1)

Publication Number Publication Date
WO2022032403A1 true WO2022032403A1 (fr) 2022-02-17

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PCT/CL2020/050091 Ceased WO2022032403A1 (fr) 2020-08-13 2020-08-13 Procédé pour effectuer une liaison d'assemblage (clé de cisaillement) entre des éléments préfabriqués pour la construction d'une tour éolienne en béton ou analogue

Country Status (1)

Country Link
WO (1) WO2022032403A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1060629U (es) * 2005-06-20 2005-10-16 Inneo21, S.L. Estructura perfeccionada de juntas entre placas de torres modulares para turbinas eolicas y otras aplicaciones.
US20090025304A1 (en) * 2005-09-23 2009-01-29 Sika Technology Ag Tower Construction
KR20130012106A (ko) * 2012-05-18 2013-02-01 동부건설 주식회사 해상풍력발전기의 트랜지션피스 및 모노파일 연결구조
WO2017039923A2 (fr) * 2015-08-31 2017-03-09 Siemens Energy, Inc. Tour d'équipement ayant un soubassement en béton
US20180128246A1 (en) * 2012-04-04 2018-05-10 Forida Development A/S Wind turbine comprising a tower part of an ultra-high performance fiber reinforced composite
CN108412704A (zh) * 2018-05-17 2018-08-17 三重能有限公司 风力发电机组及其塔筒
US20190106856A1 (en) * 2012-08-03 2019-04-11 Wind Tower Technologies, Llc Precast concrete post tensioned segmented wind turbine tower
US20200040541A1 (en) * 2016-10-10 2020-02-06 Delft Offshore Turbine B.V. Offshore structure comprising a coated slip joint and method for forming the same
WO2020106146A1 (fr) * 2018-11-20 2020-05-28 Sif Holding N.V. Monopile sans tp et son procédé de formation
CN210918430U (zh) * 2019-08-16 2020-07-03 上海市机电设计研究院有限公司 风电塔筒预制环片的竖缝后浇受力键
WO2020160857A1 (fr) * 2019-02-07 2020-08-13 Innogy Se Procédé permettant de créer un raccord entre deux segments tubulaires de largeur différente, et raccord produit selon ledit procédé

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1060629U (es) * 2005-06-20 2005-10-16 Inneo21, S.L. Estructura perfeccionada de juntas entre placas de torres modulares para turbinas eolicas y otras aplicaciones.
US20090025304A1 (en) * 2005-09-23 2009-01-29 Sika Technology Ag Tower Construction
US20180128246A1 (en) * 2012-04-04 2018-05-10 Forida Development A/S Wind turbine comprising a tower part of an ultra-high performance fiber reinforced composite
KR20130012106A (ko) * 2012-05-18 2013-02-01 동부건설 주식회사 해상풍력발전기의 트랜지션피스 및 모노파일 연결구조
US20190106856A1 (en) * 2012-08-03 2019-04-11 Wind Tower Technologies, Llc Precast concrete post tensioned segmented wind turbine tower
WO2017039923A2 (fr) * 2015-08-31 2017-03-09 Siemens Energy, Inc. Tour d'équipement ayant un soubassement en béton
US20200040541A1 (en) * 2016-10-10 2020-02-06 Delft Offshore Turbine B.V. Offshore structure comprising a coated slip joint and method for forming the same
CN108412704A (zh) * 2018-05-17 2018-08-17 三重能有限公司 风力发电机组及其塔筒
WO2020106146A1 (fr) * 2018-11-20 2020-05-28 Sif Holding N.V. Monopile sans tp et son procédé de formation
WO2020160857A1 (fr) * 2019-02-07 2020-08-13 Innogy Se Procédé permettant de créer un raccord entre deux segments tubulaires de largeur différente, et raccord produit selon ledit procédé
CN210918430U (zh) * 2019-08-16 2020-07-03 上海市机电设计研究院有限公司 风电塔筒预制环片的竖缝后浇受力键

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