CN111287895A

CN111287895A - Prestressed reinforcement connector of tower barrel and concrete tower barrel with same

Info

Publication number: CN111287895A
Application number: CN201811488963.5A
Authority: CN
Inventors: 孙阳; 李沐
Original assignee: Shenzhen Jingchuang Heavy Industry Special Engineering Co ltd
Current assignee: Shanghai Fengling New Energy Co ltd
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-06-16

Abstract

The invention discloses a prestressed tendon connector of a tower cylinder and a concrete tower cylinder with the prestressed tendon connector, wherein the prestressed tendon connector of the tower cylinder comprises: the internal connection post and the external connection platform are equipped with the internal connection hole on the internal connection post, and the internal connection hole link up the internal connection post along the axial, and the external connection platform is formed by the outside extension of part periphery wall of internal connection post, and the axial dimension of external connection platform is less than the axial dimension of internal connection post, and the external connection bench is equipped with a plurality of spaced apart outer connection grooves along circumference, and the outer connection groove links up the external connection platform along the axial, and the outer connection groove is opened in the one side of keeping away from the internal connection post. According to the prestressed reinforcement connector of the tower barrel, disclosed by the embodiment of the invention, the concrete tower barrel can tension the prestressed cable in advance and apply prestress so as to resist the lateral load of the tower barrel, which is generated by supporting the tower crane device, and therefore, the stability of the tower barrel structure is facilitated, and the inner connecting hole and the outer connecting groove are simple in structure and convenient to construct.

Description

Prestressed reinforcement connector of tower barrel and concrete tower barrel with same

Technical Field

The invention relates to the field of tower barrels, in particular to a prestressed reinforcement connector of a tower barrel and a concrete tower barrel with the prestressed reinforcement connector.

Background

Along with the increase of the generating efficiency of the fan, the length of the blade is longer and longer, and the height and the section size of the fan tower barrel matched with the blade are also increased continuously. The steel structure tower barrel is high in cost and difficult to transport, so that the construction requirement of the large-section high tower barrel is difficult to meet. The precast concrete tower barrel can economically build a large-scale wind generating set, so that the precast concrete tower barrel is widely concerned. Due to transportation and prefabrication, a single large section tower is often assembled on site from multiple arc-shaped pieces. And then hoisting the assembled tower barrels from bottom to top in sequence, and finally constructing the complete concrete tower barrel.

The height of the traditional tower is generally 80-120 m, and the wind power generation can generate higher power generation efficiency due to higher wind speed at high altitude, so that the height of the tower needs to be increased, and the hoisting difficulty is increased. When a tower cylinder with extremely high hoisting height is hoisted, a tower crane device with the matched height is needed to be used, and the tower crane device with extremely high height is extremely easy to be inclined in the hoisting process.

Disclosure of Invention

In order to ensure the stability and the safety of the ultrahigh tower crane device, the inventor designs a plurality of schemes, for example, a plurality of stay cables led out from the ground are adopted to be fixed on the tower crane device, and for example, the tower crane device is subjected to structural rigidity strengthening treatment and the like. Among the various solutions, one is distinguished by stability and reliability, namely the tower crane assembly is supported on a concrete tower drum by means of a outrigger structure. However, when the tower crane device is supported by the arm-supporting structure arranged on the tower drum, more lateral loads can be generated at the supporting part of the tower drum, so that the tower drum is stressed intensively and is easy to deform, and therefore another problem is caused to extend out, and how to structurally reinforce the concrete tower drum.

In order to solve the problem that the concrete tower barrel generates additional lateral load due to supporting of a tower crane device, the inventor designs a scheme of applying prestress in advance by utilizing a prestressed cable of the concrete tower barrel. Specifically, in the construction of a precast concrete tower drum in the prior art, after all tower drum sections are hoisted, a prestressed cable is connected to the bottom of the tower drum from the top of the tower drum. In the embodiment of the invention, the prestressed cables are planned to be connected in sections, and the tower barrel section is pre-tensioned and pre-tightened through the prestressed cables before the tower crane device is connected to a certain tower barrel section through the supporting arm structure, so that the tower barrel section is difficult to deform due to the lateral load when the tower barrel section generates the lateral load due to supporting the tower crane device.

The solution developed so far will face the problem of how to tension the pre-stressed cables in advance. Therefore, the invention provides a prestressed tendon connector of a tower drum, which can be arranged in the wall of a concrete tower drum and is connected with a prestressed cable. The invention also provides a concrete tower drum with the prestressed reinforcement connector of the tower drum.

According to the first aspect of the invention, the prestressed tendon connector of the tower cylinder comprises an inner connecting column and an outer connecting table, wherein the inner connecting column is provided with an inner connecting hole, the inner connecting hole axially penetrates through the inner connecting column, the outer connecting table is formed by extending part of the peripheral wall of the inner connecting column outwards, the axial size of the outer connecting table is smaller than that of the inner connecting column, the outer connecting table is circumferentially provided with a plurality of spaced outer connecting grooves, the outer connecting grooves axially penetrate through the outer connecting table, and the outer connecting grooves are open on one side far away from the inner connecting column.

According to the prestressed tendon connector of the tower barrel, disclosed by the embodiment of the invention, two sections of prestressed cables can be tightly connected, so that prestress is applied to the concrete tower barrel to resist the side load of the concrete tower barrel caused by supporting the tower crane device, and the stability of the concrete tower barrel is facilitated. The inner connecting hole and the outer connecting groove are simple in structure, the two sections of prestressed cables can easily penetrate through the inner connecting hole and the outer connecting groove, and construction is convenient.

In addition, the prestressed tendon connector of the tower barrel according to the invention can also have the following additional technical characteristics:

in some embodiments of the invention, the inner connecting post has a diameter that gradually decreases from one end toward the other end.

In some examples of the invention, the outer land is disposed adjacent to a small diameter end of the inner connecting post.

In some embodiments of the present invention, two of the outer connecting stages are connected to the outer periphery of the inner connecting column, the two outer connecting stages are spaced apart from each other in the axial direction of the inner connecting column, and the outer connecting grooves of the two outer connecting stages are correspondingly arranged.

In some embodiments of the invention, the inner connection hole comprises a central hole provided on a central axis of the inner connection post and a plurality of surrounding holes provided at intervals around the central hole.

Optionally, the hole distance between the plurality of surrounding holes and the central hole gradually decreases from one end of the inner connecting column to the other end.

In some embodiments of the invention, the inner connecting post is cylindrical and the outer connecting land is annular.

The invention also provides a concrete tower drum with the prestressed reinforcement connector of the tower drum.

According to the concrete tower drum of the embodiment of the second aspect of the invention, the concrete tower drum comprises a tower drum body and a plurality of prestressed cables, the tower drum body comprises a plurality of tower drum sections which are sequentially connected from bottom to top, each tower drum section is provided with a plurality of prestressed ducts which are communicated up and down, the prestressed cables are respectively arranged in the prestressed ducts, two ends of each prestressed cable are fixed by tensioning through anchoring devices, wherein at least one prestressed cable comprises a lower section cable and an upper section cable, the lower end of the upper section cable and the upper end of the lower section cable are respectively fixed on a prestressed tendon connector in a tensioning manner, and the prestressed tendon connector can be any one of the above embodiments,

according to the concrete tower drum disclosed by the embodiment of the invention, the concrete tower drum can be prestressed through the anchoring device and the prestressed tendon connector, so that the side load in the concrete tower drum is offset.

Optionally, the upper section cable is anchored to the outer attachment slot and the lower section cable is anchored to the inner attachment slot.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a concrete tower drum according to an embodiment of the present invention;

FIG. 2 is a schematic representation of the construction of the tendon connectors of an angled tower according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a tendon connector of another angular tower according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a tendon connector of a tower at yet another angle in accordance with an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a tendon connector according to another embodiment of the present invention.

Reference numerals:

a prestressed tendon connector 100,

Inner connecting post 1, inner connecting hole 11, center hole 111, surrounding hole 112,

An outer connecting platform 2, an outer connecting groove 21, a first outer connecting platform 22, a first outer connecting groove 221, a second outer connecting platform 23, a second outer connecting groove 231,

A concrete tower tube 1000,

A tower body 200, a tower segment 10,

Tower crane device 2000, hold up arm structure 3000.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the figures, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 in specific cases to those skilled in the art.

A concrete tower 1000 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1, a concrete tower tube 1000 according to an embodiment of the present invention includes a tower tube body 200 and a plurality of prestressed cables (not shown in the drawings), wherein the tower tube body 200 includes a plurality of tower tube sections 10 connected in sequence from bottom to top, each tower tube section 10 is provided with a plurality of prestressed ducts (not shown in the drawings) that are through from top to bottom, the prestressed ducts in two adjacent tower tube sections 10 may correspond to each other, the prestressed cables are respectively provided in the prestressed ducts, and both ends of each prestressed cable are tensioned and fixed.

Specifically, a plurality of vertically penetrating prestressed ducts (not shown) are provided in each tower section 10, and the prestressed ducts in two adjacent tower sections 10 may correspond to each other, so that each prestressed cable may pass through the prestressed duct of one tower section 10, or may pass through the prestressed ducts of two or more tower sections 10 continuously. The anchoring means may tension and fix both ends of each prestressed cable, thereby prestressing the concrete tower 1000.

The tower segment 10 is a prefabricated tower, and the tower segment 10 required for constructing the concrete tower 1000 is manufactured in advance in a factory. After a plurality of prefabricated tower cylinder sections 10 are transported to a use place by a prefabricated factory, the prefabricated tower cylinder sections are sequentially upwards spliced from bottom to top to form the high tower. Because a plurality of tower sections 10 need be assembled on the spot of using, the hoist and mount of tower section 10 is high altitude construction, and the construction degree of difficulty is high, needs to use tower crane device 2000 hoist and mount operation.

In the process of hoisting the concrete tower drum 1000 by the tower crane device 2000, the tower crane device 2000 is also increased correspondingly along with the increase of the section of the tower drum which is hoisted. In the prior art, the height of some concrete tower barrels can even reach more than one hundred meters, so the height required by the tower crane device is higher. In order to ensure the safety of construction, the embodiment of the invention proposes that the tower crane device 2000 is fixed on a suitable tower section 10 in the tower section 10 which is hoisted.

As shown in FIG. 1, tower crane assembly 2000 is coupled to a suitable tower section 10 via at least one arm structure 3000. In one example, tower crane assembly 2000 is provided with an arm structure 3000 at both a height of 1/3 and a height of 2/3 of concrete tower 1000, and tower crane assembly 2000 is connected to two arm structures 3000. Set up like this, can provide the holding power to tower crane device 2000 through concrete tower section of thick bamboo 1000, avoid tower crane device 2000 too high and buckle, swing etc. by a wide margin.

However, when the tower crane apparatus 2000 is connected to the concrete tower drum 1000 through the arm supporting structure 3000, a lateral load is applied to the tower section 10 through the arm supporting structure 3000, so that in order to prevent the arm supporting structure 3000 from causing the concrete tower drum 1000 to be inclined and crushed, a prestress needs to be applied to the tower section 10 which is already hoisted in advance. Thus, in the above example, the plurality of tower sections 10 of 1/3 height may be tensioned and pre-tensioned by pre-stressing cables when the concrete tower 1000 is constructed to 1/3 height. After the section of tower sections 10 is tensioned, tower crane assembly 2000 is then connected to one of the tower sections 10 via arm structure 3000. Then, when the concrete tower tube 1000 is built to 2/3, a plurality of tower tube segments 10 from 1/3 to 2/3 are tensioned and pre-tensioned through the prestressed cables, and the bottoms of the prestressed cables are connected to the prestressed cables tensioned last time, so that the continuity of the prestressed cables is realized. Of course, after the whole concrete tower tube 1000 is constructed, another whole segment of prestressed cable (no longer segmented) may be adopted to connect the tower tube from bottom to top in a tensioned manner, so as to achieve the effect of strengthening the connection.

For the prestressed cable with segmented connection, in order to connect the upper and lower segments of prestressed cable, the embodiment of the present invention provides a prestressed tendon connector 100. The at least one prestressed cable comprises a lower section cable and an upper section cable, and the lower end of the upper section cable and the upper end of the lower section cable are respectively fixed on the prestressed tendon connector 100 in a tensioning manner. The prestressed cable referred to herein as a segmental connection includes a lower cable and an upper cable, and for convenience of description of the structure of the tendon connector 100, the prestressed cable connected to the tendon connector 100 from below is referred to as a lower cable, and the prestressed cable connected to the tendon connector 100 from above is referred to as an upper cable. For the scheme that the prestressed cable is divided into three or more sections, the upper section cable connected with the lower prestressed tendon connector 100 is the lower section cable connected with the upper prestressed tendon connector 100. Whether the pre-stressed cable is the lower or upper cable is relative to the position of the tendon connector 100 to which it is attached.

Since the non-sectionally connected prestressed cables do not use the tendon connectors 100, the non-sectionally connected prestressed cables, which are referred to hereinafter, will not be described in detail.

The tendon connector 100 of the tower according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 2 to 4, the tendon connector 100 for a tower according to an embodiment of the present invention includes an inner connection column 1 and an outer connection platform 2, the inner connection column 1 is provided with an inner connection hole 11, the inner connection hole 11 axially penetrates through the inner connection column 1, the outer connection platform 2 is formed by extending a part of an outer circumferential wall of the inner connection column 1, an axial dimension of the outer connection platform 2 is smaller than an axial dimension of the inner connection column 1, the outer connection platform 2 is circumferentially provided with a plurality of spaced outer connection grooves 21, the outer connection grooves 21 axially penetrate through the outer connection platform 2, and the outer connection grooves 21 are open on a side away from the inner connection column 1.

That is, one segment of the tendon connector 100 may be inserted through one end of the inner connection hole 11 and then anchored at the other end of the inner connection column 1, and the other segment of the tendon may enter the outer connection stage 2 from the open position of the outer connection groove 21 and then anchored at one end surface of the outer connection stage 2, thereby completing the connection of the two segments of the tendon.

The outer connecting grooves 21 are arranged in a plurality and spaced apart in the circumferential direction, that is, the tendon connector 100 may be connected to a plurality of segments of prestressed cables through the outer connecting platform 2, so as to improve the usability of the outer connecting platform 2. The multiple segments of prestressed cables are circumferentially spaced on the outer connecting platform 2, so that the balance of the outer connecting platform 2 is facilitated, and the influence of the multiple segments of prestressed cables on each other can be prevented. Alternatively, a plurality of inner connecting holes 11 may be provided on the inner connecting column 1, or the inner connecting holes 11 may connect to a segment of prestressed cable, or may be simultaneously matched with a plurality of segments of prestressed cable, which is not limited herein.

The outer connecting platform 2 is formed by extending part of the peripheral wall of the inner connecting column 1 outwards, that is, in the axial direction of the tower drum, the length of the inner connecting column 1 is greater than or equal to that of the outer connecting platform 2, therefore, the outer connecting platform 2 and the upper end face of the inner connecting column 1 can be on the same horizontal plane or on different horizontal planes, and the outer connecting platform 2 and the lower end face of the inner connecting column 1 can be on the same horizontal plane or on different horizontal planes. Preferably, as shown in fig. 3 and 4, the external connection platform 2 is disposed at a middle position of the internal connection column 1, and a distance from an upper end surface of the external connection platform 2 to an upper end surface of the internal connection column 1 is smaller than a distance from a lower end surface of the external connection platform 2 to a lower end surface of the internal connection column 1, so that the tendon connector 100 of the tower has a substantially cross-shaped profile, which is convenient for positioning and installation. In addition, the space at the lower end of the external connecting platform 2 is large, and the prestressed cable can be anchored at the position after penetrating through the external connecting platform 2, so that construction is facilitated.

According to the prestressed tendon connector 100 of the tower cylinder provided by the embodiment of the invention, two segments of prestressed cables can be tightly connected, so that prestress is applied to the concrete tower cylinder 1000, the structural strength of a supporting part is improved, the side load applied to the concrete tower cylinder 1000 by the tower crane device 2000 is offset, and the stability of the concrete tower cylinder 1000 is facilitated. The inner connecting hole 11 and the outer connecting groove 21 have simple structures, two sections of prestressed cables can easily pass through the prestressed cables, and the construction is convenient.

Alternatively, the upper strand is anchored to the outer attachment slot 21 and the lower strand is anchored to the inner attachment hole 11. That is, the upper strand may enter the outer connecting block 2 from the open position of the outer connecting groove 21, and the lower end of the upper strand is anchored to the lower end of the outer connecting block 2. The lower cable needs to enter the inner connecting hole 11 from the lower end of the inner connecting column 1 and then extend out from the upper end of the inner connecting column 1, and the upper end of the lower cable is anchored at the upper end of the inner connecting column 1. It will be appreciated that the upper strand may also be anchored to the inner attachment bore 11 and the lower strand to the outer attachment bore 21, and only the attachment of the upper and lower strands to the tendon connector 100 will be described herein. For the convenience of explaining the present invention, the following description is made by taking as an example that the upper segment cable is anchored to the outer connecting groove 21 and the lower segment cable is anchored to the inner connecting hole 11.

In some embodiments of the present invention, the inner connecting column 1 is cylindrical and the outer connecting platform 2 is annular. The structure of cylinder and ring is comparatively simple, and convenient the manufacturing is less with the installation, and the space that occupies simultaneously, and like this, the section of thick bamboo wall of concrete tower section of thick bamboo 1000 just can be with reserving the space of installing prestressing tendons connector 100 and establish a bit less, can guarantee the stability of concrete tower section of thick bamboo 1000 structure.

In some embodiments of the present invention, the inner connecting column 1 has a diameter gradually decreasing in a direction from one end toward the other end. That is, in the axial direction of the inner connecting column 1, the diameter of the inner connecting column 1 may gradually decrease from bottom to top, or from top to bottom. Preferably, when the lower section cable is threaded into the inner connecting column 1 from bottom to top, the diameter of the inner connecting column 1 is gradually reduced from bottom to top, so that the diameter of the lower end of the inner connecting column 1 is larger, the larger lower end face is abutted against the inner wall of the concrete tower tube 1000, and the lower end face is more easily limited and has higher stability. In addition, the inner connecting holes 11 can be arranged slightly larger at the lower end of the inner connecting column 1, so that the lower-section cables can be conveniently inserted into the inner connecting holes 11, and the construction difficulty is simplified.

Optionally, as shown in fig. 3 and 4, the outer connecting platform 2 is adjacent to the end of the inner connecting column 1 with a small diameter, that is, the diameter of the inner connecting column 1 matched with the outer connecting platform 2 is small, which is beneficial to fixing the inner connecting column 1 and the outer connecting platform 2, and the space of the upper end surface and the lower end surface of the outer connecting platform 2 is also large, so that a large anchoring space can be obtained, and the construction is convenient.

In some embodiments of the present invention, as shown in fig. 5, two outer connecting stages 2 are connected to the outer circumference of the inner connecting column 1, the two outer connecting stages 2 are spaced apart from each other in the axial direction of the inner connecting column 1, and the outer connecting grooves 21 of the two outer connecting stages 2 are correspondingly disposed. That is, the two outer connecting platforms 2 are provided, which are the first outer connecting platform 22 and the second outer connecting platform 23, respectively, and the two outer connecting platforms 2 can be located and anchored, for example, the upper cable can pass through the first outer connecting groove 221 of the first outer connecting platform 22 and then pass through the second outer connecting groove 231 of the second outer connecting platform 23, and the first outer connecting groove 221 can be used to limit the upper cable, so that the upper cables cannot be affected by each other, and the stability between the upper cables can be ensured. The second outer connecting groove 231 can be used to anchor the upper cable, and the upper cable can be more firmly fixed because the upper cable passes through the position limitation of the first outer connecting groove 221 and then passes through the anchoring of the second outer connecting groove 231.

In some embodiments of the present invention, the inner connecting hole 11 includes a central hole 111 and a plurality of surrounding holes 112, the central hole 111 is disposed on the central axis of the inner connecting column 1, and the plurality of surrounding holes 112 are disposed around the central hole 111 at intervals. That is, the inner connecting hole 11 can connect a plurality of lower cables, and the lower cables are spaced apart from each other and do not affect each other. The attachment of a plurality of lower cables to the tendon connectors 100 may increase the prestress applied to the concrete tower 1000. Meanwhile, the space of the wall of the concrete tower tube 1000 can be saved, and the stability of the concrete tower tube 1000 is improved. The central hole 111 is arranged on the central axis of the inner connecting column 1, and the plurality of surrounding holes 112 are arranged around the central hole 111 at intervals, wherein the plurality of surrounding holes 112 are symmetrically arranged, so that the inner connecting column 1 is balanced after the lower-section cable is anchored, and the stability of the inner connecting column 1 can be improved.

Alternatively, the pitch between the plurality of surrounding holes 112 and the central hole 111 gradually decreases in a direction from one end of the inner connecting column 1 toward the other end. That is, the distance between the plurality of surrounding holes 112 and the central hole 111 may be gradually decreased in a direction in which the upper end of the inner connecting column 1 is directed toward the lower end, or the distance between the plurality of surrounding holes 112 and the central hole 111 may be gradually decreased in a direction in which the lower end of the inner connecting column 1 is directed toward the upper end, preferably, when the prestressed cables are penetrated from the lower end toward the upper end, and the upper end of the inner connecting column 1 is anchored, the distance between the lower end of the inner connecting column 1 and the central hole 111 is gradually decreased in a direction in which the lower end of the inner connecting column 1 is directed toward the upper end, so that the distance between the plurality of prestressed cables may be further increased when the plurality of prestressed cables are penetrated into the inner connecting column 1, thereby preventing mutual influence, and meanwhile, when the plurality of prestressed cables are anchored at the upper end of the inner connecting column 1, the cables may.

Other constructions of concrete tower cans 1000, such as a tower footing, etc., and operation according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

The specific construction of the tendon connector 100 according to one embodiment of the present invention will be described with reference to fig. 2 to 3.

As shown in fig. 2 to 3, the tendon connector 100 of the present embodiment includes an inner connection column 1 and an outer connection platform 2, the inner connection column 1 is provided with an inner connection hole 11, the inner connection hole 11 axially penetrates through the inner connection column 1, the inner connection hole 11 includes a central hole 111 and six surrounding holes 112, the central hole 111 is disposed on a central axis of the inner connection column 1, and the six surrounding holes 112 are disposed at intervals around the central hole 111. One end of the inner connecting column 1 is gradually reduced in diameter toward the other end. The outer joint platform 2 is formed by the outside extension of part periphery wall of inner connecting column 1, and the axial dimension of outer joint platform 2 is less than the axial dimension of inner connecting column 1, is equipped with ten spaced apart outer joint grooves 21 along circumference on the outer joint platform 2, and outer joint groove 21 runs through outer joint platform 2 along the axial, and outer joint groove 21 opens in the one side of keeping away from inner connecting column 1.

In the description herein, references to the description of the terms "some embodiments," "optionally" or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A prestressed tendon connector of a tower cylinder is characterized by comprising:

the inner connecting column is provided with an inner connecting hole which penetrates through the inner connecting column along the axial direction;

the outer joint platform, the outer joint platform by the outside extension of part periphery wall of in-connection post forms, the axial dimension of outer joint platform is less than the axial dimension of in-connection post, the outer joint bench is equipped with a plurality of spaced apart outer spread grooves along circumference, outer spread groove link up along the axial the outer joint platform, outer spread groove is keeping away from one side of in-connection post is opened.

2. The tendon connector of claim 1 wherein the inner connecting column has a diameter that decreases from one end toward the other end.

3. The tendon connector of claim 2, wherein the outer connector block is disposed adjacent to the smaller diameter end of the inner connector post.

4. The tendon connector of claim 1, wherein two outer connection platforms are connected to the outer periphery of the inner connection column, the two outer connection platforms are spaced apart from each other in the axial direction of the inner connection column, and the outer connection platforms are correspondingly disposed to the outer connection platforms.

5. The tendon connector of claim 1, wherein the inner connection aperture includes a central aperture disposed on a central axis of the inner connection post and a plurality of peripheral apertures spaced around the central aperture.

6. The tendon connector of claim 5, wherein the pitch between the plurality of circumferential holes and the central hole is gradually decreased from one end of the inner connecting column to the other end.

7. The tendon connector of claim 1 wherein the inner connecting post is cylindrical and the outer connecting platform is annular.

8. A concrete tower drum, comprising:

the tower comprises a tower body, wherein the tower body comprises a plurality of tower sections which are sequentially connected from bottom to top, and each tower section is provided with a plurality of vertically-through prestressed ducts;

the prestressed cables are respectively arranged in the prestressed ducts, and two ends of each prestressed cable are tensioned and fixed through anchoring devices; wherein,

at least one prestressed cable comprises a lower section cable and an upper section cable, the lower end of the upper section cable and the upper end of the lower section cable are respectively fixed on a prestressed tendon connector in a tensioning manner, and the prestressed tendon connector is the prestressed tendon connector of the tower barrel according to any one of claims 1 to 7.

9. A concrete tower according to claim 8, wherein the upper section of cable is anchored to the outer attachment slot and the lower section of cable is anchored to the inner attachment slot.