CN115450846A - Groove-filling type bamboo-shaped precast concrete wind power tower cylinder and construction method - Google Patents
Groove-filling type bamboo-shaped precast concrete wind power tower cylinder and construction method Download PDFInfo
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- CN115450846A CN115450846A CN202211291072.7A CN202211291072A CN115450846A CN 115450846 A CN115450846 A CN 115450846A CN 202211291072 A CN202211291072 A CN 202211291072A CN 115450846 A CN115450846 A CN 115450846A
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- 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
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- 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
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- 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
- F03D13/22—Foundations specially adapted for wind motors
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- 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
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- 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
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Abstract
The invention discloses a pouring groove type bamboo joint-shaped precast concrete wind power tower cylinder and a construction method, relates to the technical field of new energy wind power generation, and aims to solve the problems of certain potential safety hazards, high manufacturing cost and long construction period of the existing precast concrete tower cylinder structure. The prefabricated concrete wind power tower comprises a prefabricated concrete wind power tower cylinder, wherein the prefabricated concrete wind power tower cylinder is formed by overlapping and assembling a plurality of prefabricated concrete tower rings, the appearance of the prefabricated concrete wind power tower cylinder is in a bamboo joint shape, each prefabricated concrete tower ring is formed by a plurality of prefabricated concrete pipe pieces, vertical steel bars are longitudinally embedded in the prefabricated concrete pipe pieces, the vertical steel bars extend out of the tops of the pipe pieces to form U-shaped lap joint steel bars, a grouting groove is formed in the inner side of the lower portion of each prefabricated concrete pipe piece, and a grouting hole and an exhaust hole are reserved in the upper portion of the grouting groove.
Description
Technical Field
The invention relates to the technical field of new energy wind power generation, in particular to a groove-filling type bamboo joint-shaped precast concrete wind power tower and a construction method.
Background
In recent years, the wind power generation industry of China is greatly improved and developed, and in the face of intense competition of the market, key indexes such as long blades and large megawatts are continuously refreshed. The concrete-steel mixed tower cylinder has the advantages of high reliability, resonance resistance, low manufacturing cost, good waterproofness, good durability, low maintenance cost, stable generated energy, increased generated energy and the like, and is increasingly applied to practice, so that the concrete-steel mixed tower cylinder has the potential of replacing a steel tower cylinder.
However, as the wind power industry in China starts late, the development of the precast concrete wind power tower cylinder is relatively late, the connection mode of the precast concrete tower ring is single, and the connection mode between the upper layer and the lower layer of the precast concrete tower ring is mainly as follows: the prestressed concrete tower comprises a pore channel, prestressed steel bars, grouting-free dry-type external prestressed steel bars and the like, horizontal ring openings of prefabricated concrete tower rings of the pore channel and grouting-free dry-type external prestressed steel bars are in a flat opening form, vertical steel bars in upper and lower prefabricated concrete tower rings are in a disconnected state at horizontal joints, the upper and lower prefabricated concrete tower rings are pulled and connected mainly by the prestressed steel bars, once a tower barrel vibrates for a long time in a swinging mode, a prestressed anchor is loosened, the prestressed steel bars fail, a certain potential safety hazard exists in the structure, the price of the prefabricated concrete tower barrel is high due to the fact that the prestressed steel bars are high in price, and meanwhile due to the fact that prestressed construction needs to be conducted in the working procedure, the assembling and assembling time of the prefabricated concrete tower barrel is prolonged, and the construction efficiency of the prefabricated tower barrel is affected.
Disclosure of Invention
In order to solve the problems, namely the problems of the background art, the invention provides a groove-filling type bamboo-joint-shaped precast concrete wind power tower cylinder and a construction method thereof, the groove-filling type bamboo-joint-shaped precast concrete wind power tower cylinder comprises a precast concrete wind power tower cylinder, the precast concrete wind power tower cylinder is formed by stacking a plurality of precast concrete tower rings, the precast concrete tower rings are assembled by splicing a plurality of precast concrete pipe pieces, a plurality of vertical steel bars are longitudinally embedded in each precast concrete pipe piece, the top ends of the vertical steel bars extend out of the precast concrete pipe pieces and are bent to form U-shaped lap steel bars, a grouting groove is formed in the inner side of the bottom of each precast concrete tower ring, the outer contour of each U-shaped lap steel bar is matched with the inner contour of each grouting groove, each U-shaped lap steel bar is inserted into the corresponding grouting groove, a gap between the top of the lower precast concrete tower ring of the lower layer and the lower precast concrete tower ring of the upper layer is filled with a grouting groove, a grouting bin is formed between the top of the precast concrete tower ring of the lower layer and a grouting hole and an exhaust hole for grouting are filled with grouting slurry for grouting.
The invention is further provided with:
s1: firstly, splicing precast concrete segments through split bolts and cement gum on a construction site, assembling to form a precast concrete tower ring, binding horizontal stirrups on U-shaped lap reinforcements, and splicing rubber adhesive tapes along the protruding positions of the inner edge and the outer edge of the top of the precast concrete tower ring;
s2, when the first floor is installed, namely when the cast-in-place floor is transited to the prefabricated tower cylinder section, manufacturing reserved U-shaped lap-joint reinforcing steel bars at the corresponding position of the top of the cast-in-place floor by using a positioning mould;
s3: after leveling, adhering rubber adhesive tapes to corresponding positions of the edges of the reserved lap joint steel bars on the cast-in-situ layer;
s4: hoisting the precast concrete tower ring, inserting U-shaped lapped reinforcing steel bars on a cast-in-place layer into a grouting groove at the lower part of a circular ring of a concrete tower cylinder, dropping the upper precast concrete tower ring onto a rubber adhesive tape of the cast-in-place layer, and correcting the precast concrete tower ring in place to form a closed grouting bin between the grouting groove at the lower part of the precast concrete tower ring and the cast-in-place layer;
s5: after the precast concrete tower ring is in place, pouring high-strength bonding grouting material into the grouting bin through the grouting holes by using a high-pressure grouting pump until the grouting material overflows from the exhaust holes, and completing grouting;
s6: after the grouting material in the grouting bin reaches the designed strength, mounting a second layer of precast concrete tower ring;
s7: hoisting the upper-layer precast concrete tower ring, inserting the ring-shaped lapped steel bars at the top of the lower-layer precast concrete tower ring into a grouting groove at the lower part of the upper-layer precast concrete tower cylinder ring, correcting the upper-layer precast concrete tower ring to ensure that the splicing seams of the upper-layer precast concrete segments and the lower-layer precast concrete segments are in a staggered distribution shape so as to avoid stress concentration and crack the splicing seams, and then accurately dropping the precast concrete tower ring onto rubber adhesive tapes at the bamboo joints at the top of the lower-layer precast concrete tower ring to ensure that a closed grouting bin is formed between the upper-layer precast concrete tower ring and the lower-layer precast concrete tower ring;
s8: pouring high-strength bonding grouting material into the grouting bin through the grouting holes by using a high-pressure grouting pump until the grouting material overflows from the exhaust holes, and completing grouting, wherein the connection between the upper and lower precast concrete tower rings is completed after the strength of the grouting material reaches the designed strength;
s9: and repeating the construction method of the seventh step and the eighth step, and reciprocating the mixing ring until the prefabricated concrete wind power tower cylinder is capped, namely completing the assembly and the assembly of the wind power tower cylinder.
The invention is further provided with: and a horizontal annular stirrup used for restraining the deformation of the U-shaped lap-joint steel bars and tying the precast concrete pipe pieces is bound above the precast concrete tower ring.
The invention is further provided with: the precast concrete wind power tower cylinder is bamboo joint shaped.
The invention is further provided with: the rubber adhesive tape comprises an outer edge rubber adhesive tape and an inner edge rubber adhesive tape, and the inner edge rubber adhesive tape and the outer edge rubber adhesive tape are respectively bonded at the inner edge protruding part and the outer edge protruding part at the top of the precast concrete tower ring, namely the bamboo joint part.
The beneficial technical effects of the invention are as follows: by means of the grouting anchoring and lapping method, the vertical steel bars in the prefabricated wind power tower barrel are effectively anchored and lapped, the situation that the vertical steel bars in upper and lower prefabricated concrete tower rings are in a disconnected state at a horizontal joint is avoided, the prefabricated concrete wind power tower barrel is integrally formed, potential safety hazards are eliminated, the quality of engineering is guaranteed, and meanwhile, due to the fact that prestress construction is cancelled, the construction cost is greatly reduced, and the construction speed is accelerated.
Drawings
Fig. 1 shows a schematic view of the connection of the upper and lower layers of a precast concrete tower ring.
Fig. 2 is a schematic view showing inner steel bars of a precast concrete pipe.
Fig. 3 shows a precast concrete segment assembly diagram.
Fig. 4 shows a top schematic view of a precast concrete segment before it is assembled.
Fig. 5 shows a schematic top view of a precast concrete tower ring.
Fig. 6 shows a schematic top view of the bottom of a precast concrete tower ring.
Fig. 7 shows a schematic view of the internal construction and vertical connection of a precast concrete tower ring.
Fig. 8 shows a schematic external view of a precast concrete tower.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in this application.
The invention provides a groove-filling type bamboo joint-shaped precast concrete wind power tower cylinder, wherein during construction, an upper layer precast concrete tower ring 1 is hoisted by a crane, the precast concrete tower ring 1 is formed by splicing a plurality of precast concrete pipe pieces 10, vertical steel bars 2 in the wall of the precast concrete tower ring 1 extend out of the top of the precast concrete tower ring 1 to form U-shaped lap steel bars 3, before construction, the precast concrete pipe pieces 10 are spliced into the precast concrete tower ring 1 in the construction site in advance, horizontal annular stirrups 5 are bound on the U-shaped lap steel bars, rubber adhesive tapes 6 are bonded along the inner edge and the outer edge of the top of the precast concrete tower ring 1, namely rubber adhesive tapes 6 are bonded inside and outside the U-shaped lap steel bars 5, a grouting groove 4 is arranged inside the bottom of the precast concrete tower ring 1, the U-shaped lap steel bars 3 are matched with the grouting groove 4, the U-shaped lap steel bars 3 on the upper part of the lower layer precast concrete tower ring 1 are inserted into the grouting groove 4 on the lower part of the upper layer precast concrete tower ring 1, correcting and aligning upper and lower prefabricated concrete tower rings, wherein a prefabricated concrete wind power tower barrel 11 is formed by stacking a plurality of prefabricated concrete tower rings 1, the prefabricated concrete tower rings are in bamboo joint shapes, the upper prefabricated concrete tower rings 1 are placed on rubber strips 6 at bamboo joints at the tops of the lower prefabricated concrete tower rings 1, a grouting bin 7 is formed by utilizing the self weight of the prefabricated concrete tower rings 1 and the sealing action of the rubber strips 6, high-strength bonding grouting material is filled into the grouting bin 7 through grouting holes 8 by utilizing a high-pressure grouting pump until the grouting material overflows from exhaust holes 9, grouting is finished, and the upper and lower prefabricated concrete tower rings 1 can be connected after the strength of the grouting material reaches the designed strength, and the prefabricated wind power tower barrel 11 is formed by superposition.
In the concrete implementation process, it is worth pointing out that the precast concrete tower ring 1 is precast in advance in a factory, and the annular overlap joint steel bar 3 at the upper part of the lower precast concrete tower ring 1 can be inserted into the grouting groove 4 at the lower part of the upper precast concrete tower ring 1.
During construction, firstly, precast concrete segments 10 are assembled into a precast concrete tower ring 1, then a horizontal annular stirrup 5 at the top of the precast concrete tower ring 1 is bound, rubber adhesive tapes 6 are adhered to two sides of a U-shaped overlap joint reinforcing bar along the inner edge and the outer edge of the top of the precast concrete tower ring 1, then the upper precast concrete tower ring 1 is lifted by a crane, an annular overlap joint reinforcing bar 3 at the upper part of the lower precast concrete tower ring 1 is inserted into a grouting groove 3 at the lower part of the upper precast concrete tower ring 1, the upper precast concrete tower ring 1 and the lower precast concrete tower ring 1 are aligned, the upper precast concrete tower ring 1 is dropped on the rubber adhesive tape 6 at the top of the lower precast concrete tower ring 1, high-strength bonding grouting materials are poured into a grouting bin 7 through a grouting hole 8 by utilizing the self weight of the precast concrete tower ring 1 and the sealing effect of the rubber adhesive tapes 6, grouting is completed after the high-strength bonding grouting materials overflow from the exhaust hole 9, and after the strength of the grouting materials reaches the designed strength, the upper precast concrete tower ring 1 and the lower precast concrete tower are connected to form a prefabricated tower barrel 11.
(1) Vertical reinforcing steel bars 2 in the wall of the precast concrete tower ring 1 extend out of the top of the precast concrete tower ring 1 to form annular lap-joint reinforcing steel bars 3;
it is worth pointing out in particular that the U-shaped overlap reinforcement 3 is combined with the grouting material in the grouting bin 7 for anchoring the upper and lower prefabricated concrete tower cylinder rings 1.
(2) A horizontal annular stirrup 5 is bound on the inner side of the end of the U-shaped lap joint steel bar 3;
it is worth pointing out that the horizontal annular stirrups 5 restrain the deformation of the annular overlap joint reinforcing steel bars 3, and after construction, the vertical abutted seams of the precast concrete segments 10 are pulled.
(3) A grouting groove 4 is formed in the inner side of the bottom of the precast concrete tower ring 1, and the annular lapped steel bars 3 are matched with the grouting groove 4;
(4) The appearance of the precast concrete tower tube 11 is bamboo joint-shaped, and before construction, rubber adhesive tapes 6 are bonded along two sides of the annular reinforcing steel bars 3 at the top of the precast concrete tower ring 1 and the inner edge and the outer edge of the top of the precast concrete tower ring 1, namely the bamboo joint.
It is worth noting in particular that: the width of the rubber adhesive tape 6 is not more than that of the bamboo joint, so that the stress sectional area of the horizontal joint of the precast concrete tower tube 11 is not reduced, and the thickness of the steel bar protection layer is not reduced.
It is worth pointing out that, during construction, the upper precast concrete tower ring 1 is dropped on the rubber strip 6 of the lower precast concrete tower ring 1, and a closed grouting bin 7 can be formed between the upper precast concrete tower ring 1 and the lower precast concrete tower ring 1 by utilizing the self weight of the precast concrete tower ring 1 and the sealing action of the rubber strip 6.
(5) In the specific implementation process, it is worth pointing out that the upper part of the grouting bin 7 is provided with a grouting hole 8 and an exhaust hole 9. During construction, a high-strength bonding grouting material can be poured into the grouting bin 7 through the grouting hole 8 by using a high-pressure grouting pump, grouting is completed after the grouting material overflows from the exhaust hole 9 at the other end, connection of the upper and lower prefabricated concrete tower barrels is completed after the strength of the grouting material reaches the design strength, and the prefabricated concrete tower barrel 11 is in a bamboo joint shape.
As shown in fig. 7, the construction method of the groove-filling type bamboo joint-shaped precast concrete wind power tower cylinder comprises the following steps:
the method comprises the following steps: firstly, assembling precast concrete segments into a precast concrete tower ring by using split bolts and adhesive cement on a construction site, binding horizontal annular stirrups on U-shaped lap reinforcements, and then bonding rubber adhesive tapes along the inner edge and the outer edge of the top of the precast concrete tower ring, namely bamboo joints;
step two, when the first layer is installed, namely when a cast-in-place layer is transited to a prefabricated tower cylinder section, a positioning mould is firstly used for manufacturing reserved U-shaped lap-jointed steel bars at the corresponding position of the top of a tower cylinder of the cast-in-place layer;
step three: after leveling, adhering an annular rubber adhesive tape to the corresponding position of the edge of the reserved overlap steel bar on the cast-in-place layer;
step four: hoisting the precast concrete tower ring, inserting U-shaped lap steel bars on a cast-in-place layer into a grouting groove at the lower part of a circular ring of the concrete-making tower cylinder, dropping the upper precast concrete tower ring onto a rubber strip of the cast-in-place layer, and correcting the precast concrete tower ring in place to form a closed grouting bin between the grouting groove at the lower part of the precast concrete tower ring and the cast-in-place layer;
step five: after the precast concrete tower ring is in place, pouring high-strength bonding grouting material into the grouting bin through the grouting hole by using a high-pressure grouting pump until the grouting material overflows from the exhaust hole, completing grouting, and after the strength of the grouting material reaches the designed strength, completing the connection between the first ring of concrete tower cylinder ring and the cast-in-place layer;
step six: after the grouting material in the grouting bin reaches the design strength, installing a second layer of precast concrete tower ring;
step seven: hoisting an upper-layer precast concrete tower ring, inserting ring-shaped lapped steel bars at the top of a lower-layer precast concrete tower ring into a grouting groove at the lower part of the upper-layer precast concrete tower ring, correcting the upper-layer precast concrete tower ring to ensure that splicing seams of upper-layer precast concrete segments and lower-layer precast concrete segments are in a staggered distribution shape so as to avoid stress concentration, vertically splicing seams of the segments crack, and then accurately dropping the precast concrete tower ring onto rubber strips at bamboo joints at the top of the lower-layer precast concrete tower ring so as to form a closed grouting bin between the upper-layer precast concrete tower ring and the lower-layer precast concrete tower ring;
step eight: pouring high-strength bonding grouting material into the grouting bin through the grouting holes by using a high-pressure grouting pump until the grouting material overflows from the exhaust holes, and completing grouting until the strength of the grouting material reaches the designed strength, namely completing the connection between the upper prefabricated concrete tower ring and the lower prefabricated concrete tower ring;
step nine: and repeating the construction method of the seventh step and the eighth step, and reciprocating the mixing ring until the prefabricated concrete wind power tower cylinder is capped, namely completing the assembly and the assembly of the wind power tower cylinder, wherein the wind power tower cylinder is bamboo-shaped.
While the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, features may be combined in any suitable manner as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate a directional or positional relationship, are based on the directional or positional relationship as shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (5)
1. The utility model provides a irritate slot type bamboo joint shape precast concrete wind power tower cylinder, includes precast concrete wind power tower cylinder (11), precast concrete wind power tower cylinder (11) are constituteed by a plurality of precast concrete tower rings (1) stack, its characterized in that: the wind power tower is characterized in that the precast concrete tower ring (1) is assembled by splicing a plurality of precast concrete pipe pieces (10), vertical reinforcing steel bars (2) are longitudinally pre-embedded in the precast concrete pipe pieces (10), the vertical reinforcing steel bars (2) extend out of the top end of the precast concrete pipe pieces (10) and are bent to form U-shaped lap-joint reinforcing steel bars (3), grouting grooves (4) are formed in the inner side of the bottom of the precast concrete tower ring (1), the outer contour of each U-shaped lap-joint reinforcing steel bar (3) is matched with the inner contour of each grouting groove (4), the U-shaped lap-joint reinforcing steel bars (3) are inserted into the grouting grooves (4), gaps between the top of the lower layer precast concrete tower ring (1) and the lower portion of the upper layer precast concrete tower ring (1) are filled and sealed through rubber strips (6), grouting bins (7) are formed between the top of the lower layer precast concrete tower ring (1) and the grouting grooves (4) of the upper layer precast concrete tower ring (1), high-strength grouting slurry is filled into the grouting bins (7), and high-strength grouting slurry is arranged on the inner wall of the precast concrete tower (1) and is used for filling high-strength concrete exhaust holes (8) and prefabricated tower cylinders (9) and used for bonding prefabricated tower cylinders (11) and prefabricated tower cylinders, and prefabricated tower cylinders (9) are in the prefabricated tower cylinders, and the prefabricated tower cylinders (9).
2. The slot-filling type bamboo-joint-shaped precast concrete wind power tower cylinder according to claim 1, characterized in that: a horizontal annular hoop (5) is bound above the precast concrete tower ring (1) and used for restraining the deformation of the U-shaped lap-joint steel bars (3) and playing a role in pulling the precast concrete segments (10).
3. The groove-filling bamboo joint-shaped precast concrete wind power tower cylinder according to claim 1, characterized in that: the prefabricated concrete wind power tower cylinder (11) is in a bamboo joint shape, and the rubber adhesive tape (6) is adhered to the bamboo joint, so that the sectional area of stressed concrete of the prefabricated concrete tower ring (1) is not reduced.
4. The slot-filling type bamboo-joint-shaped precast concrete wind power tower cylinder according to claim 1, characterized in that: the rubber adhesive tape (6) comprises an outer edge rubber adhesive tape (6.1) and an inner edge rubber adhesive tape (6.2), the inner edge rubber adhesive tape (6.2) and the outer edge rubber adhesive tape (6.1) are respectively bonded at the inner edge protruding part and the outer edge protruding part at the top of the precast concrete tower ring (1), namely the bamboo joint part, so that the thickness of a protective layer of stressed steel bars in the precast concrete wind power tower cylinder (11) is not reduced.
5. The construction method of the groove-filling bamboo joint-shaped precast concrete wind power tower cylinder according to claim 1, is characterized in that:
s1: during construction, in a construction site, prefabricated concrete segments (10) are bonded through split bolts and cement paste to be assembled into a prefabricated concrete tower ring (1), horizontal stirrups (5) are bound on U-shaped overlap reinforcements (3), and rubber adhesive tapes (6) are bonded along the protruding positions of the inner edge and the outer edge of the top of the prefabricated concrete tower ring (1) and the bamboo joint positions;
s2, when the first floor is installed, namely when a cast-in-place floor is transited to a prefabricated tower cylinder section, manufacturing reserved U-shaped lap-joint reinforcing steel bars (3) at corresponding positions of the top of a cast-in-place floor tower cylinder by using a positioning mould;
s3: after leveling, adhering a rubber adhesive tape (6) to the corresponding position of the edge of the reserved overlap steel bar of the cast-in-situ layer;
s4: hoisting the precast concrete tower ring (1), inserting U-shaped lapped steel bars (5) on a cast-in-place layer into a grouting groove (4) at the lower part of the precast concrete tower cylinder ring (1), dropping the upper precast concrete tower ring (1) on a rubber adhesive tape (6) on the cast-in-place layer, and correcting the precast concrete tower ring (1) in place to form a closed grouting bin (7) between the grouting groove (4) at the lower part of the precast concrete tower ring (1) and the cast-in-place layer;
s5: after the precast concrete tower ring (1) is in place, a high-pressure grouting pump is used for pouring high-strength bonding grouting material into the grouting bin through a grouting hole (8), grouting is completed after the grouting material overflows from an exhaust hole (9), and connection between the first ring concrete tower cylinder ring (1) and a cast-in-place layer is completed after the strength of the grouting material reaches the designed strength;
s6: after the grouting material in the grouting bin (7) reaches the designed strength, installing a second layer of precast concrete tower ring (1);
s7: hoisting the upper-layer precast concrete tower ring (1), inserting the ring-shaped overlap joint reinforcing steel bars (3) at the top of the lower-layer precast concrete tower ring (1) into a grouting groove (4) at the lower part of the precast concrete tower cylinder ring (1) of the upper-layer precast concrete tower ring (1), correcting the upper-layer precast concrete tower ring (1), wherein the splicing seams of the upper-layer precast concrete pipe pieces and the lower-layer precast concrete pipe pieces (10) are distributed in a staggered manner to avoid stress concentration and cracking of the splicing seams, and then accurately dropping the precast concrete tower ring (1) onto a rubber adhesive tape (6) at the bamboo joint at the top of the lower-layer precast concrete tower ring (1) to form a closed grouting bin (7) between the upper-layer precast concrete tower ring (1) and the lower-layer precast concrete tower ring (1);
s8: a high-pressure grouting pump is utilized to fill high-strength bonding grouting material into the grouting bin (7) through the grouting hole (8), grouting is completed when the grouting material overflows from the exhaust hole (9), and connection between the upper and lower precast concrete tower rings (1) is completed when the strength of the grouting material reaches the designed strength;
s9: and repeating the construction method of the seventh step and the eighth step, and reciprocating the mixing ring until the precast concrete wind power tower cylinder (11) is capped, namely completing the assembly and the assembly of the wind power tower cylinder (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211291072.7A CN115450846A (en) | 2022-10-21 | 2022-10-21 | Groove-filling type bamboo-shaped precast concrete wind power tower cylinder and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211291072.7A CN115450846A (en) | 2022-10-21 | 2022-10-21 | Groove-filling type bamboo-shaped precast concrete wind power tower cylinder and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853341A (en) * | 2023-01-17 | 2023-03-28 | 中国化学工程第十三建设有限公司 | Recyclable tubular structure and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853341A (en) * | 2023-01-17 | 2023-03-28 | 中国化学工程第十三建设有限公司 | Recyclable tubular structure and construction method thereof |
| WO2023246952A1 (en) * | 2023-01-17 | 2023-12-28 | 中国化学工程第十三建设有限公司 | Recyclable cylindrical structure and construction method therefor |
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