Utility model content
The purpose of this utility model is to provide a kind of externally pre-stressed concrete tower, of the prior art general to solve
The tensile property of logical concrete tower is poor, easily produces crack, the technical problem of low intensity.
This utility model provide a kind of externally pre-stressed concrete tower, including tower body 1, interior prestressed strand 2 with
And External prestressed steel bundle 3;Interior prestressed strand 2 is arranged on the inner side of the inwall of tower body 1, and External prestressed steel bundle 3 is arranged on
The outside of the outer wall of tower body 1;The stretching end of the stretching end of interior prestressed strand 2 and External prestressed steel bundle 3 is each attached to tower
The upper end of cylinder body 1, the fixing end of the fixing end of interior prestressed strand 2 and External prestressed steel bundle 3 is used to be fixed on tower originally
On the lower end of body 1 or tower barrel base.
Further, tower body 1 includes multiple tower section 11;Multiple tower section 11 from top to bottom stack, interior prestressed strand 3
It is arranged on the inner side of the inwall of multiple tower section 11, External prestressed steel bundle 2 is arranged on the outside of the outer wall of multiple tower section 11.
Further, the tower section 11 at top is connected with the first upper flange 12;It is provided with multiple first on first upper flange 12
Inner via hole and multiple first accessibke porosity, multiple first inner via holes and multiple first accessibke porosity are all along between the circumference of the first upper flange 12
Every setting;The stretching end of interior prestressed strand 2 is located in the first inner via hole, and is fixed with interior stretching end anchorage, External prestressed
The stretching end of steel bundle 3 is located in the first accessibke porosity, and is fixed with outer stretching end anchorage.
Further, the lower end of the tower section 11 of bottom is provided with the first lower flange 13;It is provided with many on first lower flange 13
Individual second inner via hole and multiple second accessibke porosity, multiple second inner via holes and multiple second accessibke porosity are all along the first lower flange 13
It is provided at circumferentially spaced;The fixing end of interior prestressed strand 2 is located in second inner via hole, and solid with interior fixing end anchorage
Fixed, the fixing end of External prestressed steel bundle 3 is located in the second accessibke porosity, and is fixed with outer fixing end anchorage.
Further, the upper end of the tower section 11 of the upper end of tower section 11 at middle part and bottom is provided with the second upper flange
14;The lower end of the tower section 11 on the lower end of tower section 11 at middle part and top is provided with the second lower flange 15;On adjacent second
Flange 14 and the second lower flange 15 are connected by the connector being located on the second upper flange 14 and the second lower flange 15.
Further, the inwall of the second upper flange 14 and the second lower flange 15 all inwardly projecting in the tower section 11 being attached thereto
Inwall.
Further, the outer wall of the second upper flange 14 is concordant with the outer wall of the tower section 11 being attached thereto.
Further, each tower section 11 all includes the outer tube wall that inner core wallboard 111 and interval are set in outside inner tube wall plate 111
Plate 112;Interior prestressed strand 2 is arranged on the inner side of multiple inner core wallboards 111, and External prestressed steel bundle 3 is arranged on multiple outer tube walls
The outside of plate 112.
Further, casting concrete in the interval between inner core wallboard 111 and outer tube wallboard 112.
Further, inner core wallboard 111 and/or outer tube wallboard 112 are steel plate.
When for pour build up the concrete of tower body and reach hardness after, the stretching end of internal prestressed strand 2 and outer
The stretching end of prestressed strand 3 carries out tensioning;The fixing end of interior prestressed strand 2 is all solid with the fixing end of External prestressed steel bundle 3
Fixed, the gradually tensioning produce tension during tensioning of therefore interior prestressed strand 2 and External prestressed steel bundle 3;Should when drawing
After force value reaches preset value, the stretching end of the stretching end of interior prestressed strand 2 and External prestressed steel bundle 3 is each attached to tower originally
The upper end of body 1, due to interior prestressed strand 2 and the equal under tension of External prestressed steel bundle 3, is closed with counteracting force according to active force
System, the two ends of tower body 1 all by the pressure from inside and outside prestressed strand, thus the internal generation in tower body 1 is pre-
Compressive stress.Prestressing force can offset the tension that concrete tower is subject in the course of the work, thus improve concrete tower
Resistance to tension so as to possess that preferable anti-crack ability is strong, anti-permeability performance and shear resistance, there is good crack closure
Can, improve the bearing capacity of concrete tower.
In addition, interior prestressed strand 2 and External prestressed steel bundle 3 are arranged on the external of tower body 1, then facilitate and answer to pre-
The tensioning of power steel bundle.And, the convenient loss of prestress detection to prestressed strand, it is also convenient for prestressing force is supplemented, fall
Low maintenance cost.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can
To be mutually combined.To describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly
Connect;Can be to be mechanically connected or electrically connect;Can be to be joined directly together it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning in this utility model for the language.
Fig. 1 is the structural representation of the externally pre-stressed concrete tower that this utility model provides.As shown in figure 1, this reality
With the externally pre-stressed concrete tower of new offer, including tower body 1, interior prestressed strand 2 and External prestressed steel bundle
3;Interior prestressed strand 2 is arranged on the inner side of the inwall of tower body 1, and External prestressed steel bundle 3 is arranged on the outer wall of tower body 1
Outside;The stretching end of the stretching end of interior prestressed strand 2 and External prestressed steel bundle 3 is each attached to the upper end of tower body 1, interior
The fixing end of the fixing end of prestressed strand 2 and External prestressed steel bundle 3 is used to be fixed on lower end or the tower of tower body 1
On the basis of.
Wherein, interior prestressed strand 2, preferably using multiple, can provide enough pressure to tower.Multiple interior pre- should
The set-up mode of power steel bundle 2 has multiple, for example:Interior prestressed strand 2 is divided into multigroup, every group of interior prestressing force comprising equal amount
Steel bundle 2, multigroup prestressed strand is uniformly arranged on the inner side of tower centered on the central shaft of tower;Or multiple interior pre- should
Power steel bundle 2 is arranged centered on the central shaft of tower at equal intervals, and multiple interior prestressed strands 2 are arranged on same circumference.
External prestressed steel bundle 3 can adopt the outside being arranged on tower with interior prestressed strand 2 identical version,
Different structure form can be adopted.
The version of tower body 1 has multiple, for example:Tower body 1 can be in drum-shaped it is also possible to be in that cone is barrel-shaped
Deng.
Tower body 1 can be formed in corresponding mould by pure concreting;Also can formerly pour setting steel in mould
Muscle, then carry out concreting, form armored concrete tower body etc..
When for pour build up the concrete of tower body and reach default hardness after, the stretching end of internal prestressed strand 2 with
And the stretching end of External prestressed steel bundle 3 carries out tensioning;The fixing end of interior prestressed strand 2 and the fixing end of External prestressed steel bundle 3
All fixing, the gradually tensioning produce tension during tensioning of therefore interior prestressed strand 2 and External prestressed steel bundle 3;When
After tension reaches preset value, the stretching end of the stretching end of interior prestressed strand 2 and External prestressed steel bundle 3 is each attached to tower
The upper end of body 1, due to interior prestressed strand 2 and the equal under tension of External prestressed steel bundle 3, is closed with counteracting force according to active force
System, the two ends of tower body 1 all by the pressure from inside and outside prestressed strand, thus the internal generation in tower body 1 is pre-
Compressive stress.Compressive pre-stress can offset the tension that concrete tower is subject in the course of the work, thus improve concrete towers
The resistance to tension of cylinder, so as to possess preferable anti-crack ability, anti-permeability performance and shear resistance, has good crack closure
Can, improve the bearing capacity of concrete tower.
In addition, interior prestressed strand 2 and External prestressed steel bundle 3 are arranged on the external of tower body 1, then facilitate internally,
The tensioning of External prestressed steel bundle.And, convenient internal, External prestressed steel bundle loss of prestress detection, it is also convenient for prestressing force
Supplemented, reduced maintenance cost.
As shown in figure 1, on above-described embodiment basis, further, tower body 1 includes multiple tower section 11;Multiple
Tower section 11 from top to bottom stacks, and interior prestressed strand 2 is arranged on the inner side of the inwall of multiple tower section 11, and External prestressed steel bundle 3 sets
Put the outside of the outer wall in multiple tower section 11.
Wherein, tower body 1 is made up of multiple tower section 11, and tower section 11 can be two, three or four etc., can basis
Concrete construction situation is arranging height and the quantity of tower section 11.Then multiple tower section 11 can be transported to and after wind energy turbine set, carry out lifting group again
Become required tower, this structure is convenient to transport, and reduces cost of transportation.
In addition, prestressed strand is arranged on outside xoncrete structure, and multiple tower section 11 is connected by same prestressed strand,
Then tensioning amount is little, and the loss of prestress of prestressed strand is easy to detect, is also convenient for prestressing force and supplements.
As shown in figure 1, on above-described embodiment basis, further, the tower section 11 at top is connected with the first upper flange
12;Multiple first inner via holes and multiple first accessibke porosity, multiple first inner via holes and multiple are provided with the first upper flange 12
One accessibke porosity all being provided at circumferentially spaced along the first upper flange 12;The stretching end of interior prestressed strand 2 is located in the first inner via hole
Interior, and fixed with interior stretching end anchorage, the stretching end of External prestressed steel bundle 3 is located in the first accessibke porosity, and uses outer stretching end
Anchorage is fixed.
Wherein, the connected mode of the first upper flange 12 and the tower section 11 at top have multiple, for example:Welding, threaded or
Person is integrally formed.
The stretching end of the stretching end of interior prestressed strand 2 and External prestressed steel bundle 3 is fixed on by stretching end anchorage
On one upper flange 12, this arrangement simplifies the stretching end of the stretching end of prestressed strand 2 and External prestressed steel bundle 3 in fixing
Operating process, improves production efficiency, further facilitates detection and the maintenance in later stage.
As shown in figure 1, on above-described embodiment basis, further, the lower end of the tower section 11 of bottom is provided with first
Lower flange 13;Multiple second inner via holes and multiple second accessibke porosity be provided with the first lower flange 13, multiple second inner via holes and
Multiple second accessibke porosities all being provided at circumferentially spaced along the first lower flange 13;The fixing end of interior prestressed strand 2 is located in one
In second inner via hole, and fixed with interior fixing end anchorage, the fixing end of External prestressed steel bundle 3 is located in the second accessibke porosity, and
Fixed with outer fixing end anchorage.
Wherein, the connected mode of the first lower flange 13 and the tower section 11 of bottom have multiple, for example:Welding, threaded or
Person is integrally formed.
The fixing end of the fixing end of interior prestressed strand and External prestressed steel bundle 3 is fixed on by fixing end anchorage
On one lower flange 13, this arrangement simplifies the fixing end of the fixing end of prestressed strand 2 and External prestressed steel bundle 3 in fixing
Operating process, improves production efficiency, further facilitates detection and the maintenance in later stage.
It is preferred that the upper end of the tower section 11 at top connects the first upper flange 12, under the tower section 11 of bottom simultaneously
End connects the first lower flange 13, by the stretching end of interior prestressed strand 2 and fixing end, and the stretching end of External prestressed steel bundle 3
It is fixedly connected with the first upper flange 12 and the first lower flange 13 respectively with fixing end, further facilitate workmen to prestress steel
The fixation of bundle, further increases labor efficiency, also further facilitates the later stage to the maintenance of stress steel bundle or replacing.
Fig. 2 is the knot of the second upper flange and the second lower flange junction in the externally pre-stressed concrete tower shown in Fig. 1
Structure schematic diagram.As depicted in figs. 1 and 2, above-described embodiment basis on, further, the upper end of tower section 11 at middle part and
The upper end of the tower section 11 of bottom is provided with the second upper flange 14;Under the tower section 11 on the lower end of tower section 11 at middle part and top
End is provided with the second lower flange 15;The second adjacent upper flange 14 and the second lower flange 15 are by being located in the second upper flange 14
Connect with the connector on the second lower flange 15.
Wherein, the connected mode of the connected mode of the second upper flange 14 and tower section 11 and the second lower flange 15 and tower section 11
Can be all multiple, for example:It is integrally formed or threaded, preferably using welding, processing is simple, and being connected firmly can
Lean on.
The species of connector has a lot, for example:Pin, axle or nail etc., preferably adopt high-strength bolt and nut, even
Connect fixing simple to operate, firm and reliable connection.
By connector, the second adjacent upper flange 14 and the second lower flange 15 are connected, thus by adjacent tower section 11 even
Meet fixation, convenient construction human users, improve the labor efficiency of workmen.
As depicted in figs. 1 and 2, on above-described embodiment basis, further, the second upper flange 14 and the second lower flange
The all inwardly projecting inwall in the tower section 11 being attached thereto of 15 inwall.
Wherein, the inwall of the inwall of the second upper flange 14 and the second lower flange 15 all protrudes the inwall of tower, by connector
It is arranged on the position that the second upper flange 14 and the second lower flange 15 are located in tower, then connector can be made to be protected from rushing of sleet
Brush and the corrosion of external environment condition, thus extending the long service life of connector, reducing using of tower and producing this.
As depicted in figs. 1 and 2, on above-described embodiment basis, further, the outer wall of the second upper flange 14 and therewith
The outer wall of the tower section 11 connecting is concordant.
Wherein, after multiple tower section 11 stacked on top constitute whole tower, the outer wall of tower is still smooth, said structure
Make the compound with regular structure of tower.
As depicted in figs. 1 and 2, on above-described embodiment basis, further, each tower section 11 all includes inner core wallboard
111 are set in the outer tube wallboard 112 outside inner tube wall plate 111 with interval;Interior prestressed strand 2 is arranged on multiple inner core wallboards 111
Inner side, External prestressed steel bundle 3 is arranged on the outside of multiple outer tube wallboards 112.
Wherein, inner core wallboard 111 and outer tube wallboard 112 and material can be all multiple, for example:Timber, plastics or
Ferrum etc.;Preferably inner core wallboard 111 and outer tube wallboard 112 are steel plate, can further improve the external of the present embodiment offer
The intensity of prestressed concrete tower cylinder.
Inner core wallboard 111 and outer tube wallboard 112 can form the mould for casting concrete, facilitate concreting, side
Just the production of tower body 1.
It is preferred that inner core wallboard 111 and the two ends for outer tube wallboard 112 are respectively connected with upper flange and lower flange,
For example:The inner core wallboard 111 of the tower section 11 at top and for outer tube wallboard 112 two ends respectively with the first upper flange 12 and second under
Flange 15 connects, the inner core wallboard 111 of the tower section 11 at middle part and for outer tube wallboard 112 two ends respectively with the second upper flange 14 and
Second lower flange 15 connects, the inner core wallboard 111 of the tower section 11 of bottom and for outer tube wallboard 112 two ends respectively with second on method
Orchid 14 and the first lower flange 13 connect.
Inner core wallboard 111, outer tube wallboard 112, upper flange and lower flange define the chamber that can be used for casting concrete, then
First inner core wallboard 111, outer tube wallboard 112, upper flange and lower flange can be connected formation tower section framework in workshop, then by tower
Segment frames transport to wind energy turbine set, then lift multiple tower section frameworks, connecting adjacent tower section by adjacent upper and lower flange
Framework is connected, and the tower section framework of bottom is fixed on tower barrel base, by interior prestressed strand and External prestressed steel bundle
Fixing end is fixed;To multiple tower section framework Pouring concrete at the same times, after concrete reaches default hardness, internal, External prestressed
Steel Shu Jinhang tensioning, fixation, sealing off and covering anchorage.Further facilitate transport, reduce further cost of transportation;Further facilitate adding of tower
Work produces, and reduce further the construction cost of wind-driven generator
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in this utility model
Protection domain within.