CN109372311B - Steel strand bundle integral tunnel penetrating construction frame body device for tower and installation method thereof - Google Patents
Steel strand bundle integral tunnel penetrating construction frame body device for tower and installation method thereof Download PDFInfo
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- CN109372311B CN109372311B CN201811058699.1A CN201811058699A CN109372311B CN 109372311 B CN109372311 B CN 109372311B CN 201811058699 A CN201811058699 A CN 201811058699A CN 109372311 B CN109372311 B CN 109372311B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 158
- 239000010959 steel Substances 0.000 title claims abstract description 158
- 238000010276 construction Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 title claims description 9
- 238000009434 installation Methods 0.000 title abstract description 9
- 230000002265 prevention Effects 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a steel strand bundle integral through-hole construction frame device for a tower and an installation method thereof, wherein the device comprises a construction frame body of a frame structure, the lower end of the construction frame body is connected with a connecting steel plate, the lower end of the connecting steel plate is fixed on the top surface of a concrete tower cylinder, at least two first pulleys are uniformly distributed on the top surface of the concrete tower cylinder, at least two second pulleys are uniformly distributed in the middle part above the first pulleys, the whole steel strand bundle is bundled into at least two steel wire bundling bundles on the ground, the end parts of the steel wire bundling bundles are provided with conical guide heads, the steel wire bundling bundles sequentially bypass the first pulleys and the second pulleys, and the tops of the steel wire bundling bundles pass through a prestressed hole after passing through the construction frame body; the first pulley and the second pulley are respectively provided with an anti-lateral sliding part, so that the problem that a steel strand is rapidly penetrated into a prestress pore canal to ensure the special construction quality of prestress in the prior art can be solved.
Description
Technical Field
The invention relates to the technical field of towers, in particular to a construction frame body device for a steel strand bundle integral through hole for a tower and an installation method thereof.
Background
At present, wind power is developed in a low wind speed zone, which becomes a main development direction of wind power generation in China, but the problem of wind power development in the low wind speed zone is that: the height requirement of the power generation tower in the wind generating set is relatively high, the traditional steel tower structure system can not meet the requirement of the ultra-high wind power tower, at the moment, the mixed tower structure system is generated, in the mixed tower system, the upper part of the mixed tower structure system is a steel structure part, the lower part of the mixed tower structure system is a concrete part, the concrete part is divided into a plurality of sections, and the sections are connected into a whole through unbonded prestress steel strand tensioning; the unbonded prestress scheme is mainly applied to stretching of the whole bundle of perforation channels in the concrete section, but because the whole concrete tower section is higher, an operation platform is narrow, the channel redundancy is small, the phenomenon of blocking prestress steel strands in the channel is easily caused by adopting a single Shu Chuankong, the whole prestress steel strand is bundled on the ground, the construction is carried out in a mode of penetrating the whole steel strand into the channel from top to bottom, and when the construction is carried out in the mode, the turning radius of the steel strand is larger, so that the problem of fast penetrating the steel strand into the prestress channel to ensure the special construction quality of prestress is solved.
Disclosure of Invention
The invention aims to provide a steel strand bundle integral tunnel penetrating construction frame body device for a tower and an installation method thereof, which are used for solving the problem that a steel strand is rapidly penetrated into a prestressed tunnel to ensure the special construction quality of prestressing in the prior art.
In order to achieve the above purpose, the invention provides a steel strand bundle integral channel penetrating construction frame body device for a tower, which comprises a construction frame body with a frame structure, wherein the lower end of the construction frame body is connected with a connecting steel plate, the lower end of the connecting steel plate is fixed on the top surface of a concrete tower cylinder, at least two first pulleys are uniformly distributed on the top surface of the concrete tower cylinder, at least two second pulleys are uniformly distributed in the middle of the upper part of each first pulley, the number of the two first pulleys and the number of the second pulleys are the same, and each first pulley is matched with one second pulley to form a pulley block; the whole steel strand bundle is bundled into at least two steel wire bundling bundles on the ground, a conical guide head is arranged at the end part of the steel wire bundling bundles, the steel wire bundling bundles sequentially bypass the first pulley and the second pulley, and the top parts of the steel wire bundling bundles pass through a prestressed duct after passing through a construction frame body; the first pulley and the second pulley are respectively provided with an anti-lateral sliding part.
Optionally, an operation platform is arranged in the concrete tower.
Optionally, the number of the first pulleys and the second pulleys is four, and each first pulley is perforated by a steel strand bundle corresponding to the respective area.
Optionally, the connecting steel plate comprises a transverse steel pipe and longitudinal steel plates at two sides, and two ends of the steel pipe are respectively connected with the upper ends of the steel plates at two sides.
Optionally, the steel pipe is located on the top surface of the concrete tower and is in contact with the top surface of the concrete tower; the steel plates at both sides extend into the side wall of the concrete tower below the top surface of the concrete tower.
Alternatively, the lateral slip-off preventing member is provided as a plate-like member that contacts the entire strand.
Optionally, the plate surface of the lateral sliding prevention piece and a radial tangential plane of the first pulley are located in the same plane, and the radial tangential plane passes through the center of the first pulley.
Another aspect of the present invention provides a method for installing a steel strand bundle integral tunnel construction frame device for a tower according to one aspect of the present invention, the method comprising the steps of:
connecting the construction frame body with the connecting steel plate on the ground through a welding structure, and connecting the lower end of the connecting steel plate with the top surface of the concrete tower;
binding the whole steel strand bundle into at least two steel wire binding bundles on the ground, installing a conical guide head at the end part of the steel wire binding bundles, sequentially bypassing the first pulley and the second pulley by the whole steel strand bundles, and hoisting the steel wire binding bundles from the ground through a top hoist above the steel wire binding bundles so that the tops of the steel wire binding bundles pass through a prestressed duct after passing through a construction frame body; the first pulley and the second pulley are respectively provided with a lateral sliding prevention piece.
Optionally, the number of the first pulleys and the second pulleys is four, and the four first pulleys comprise a first pulley, a second pulley, a third pulley and a fourth pulley; the first pulley corresponds to the steel wire binding bundle perforation of the first area, the second pulley corresponds to the steel wire binding bundle perforation of the second area, the third pulley corresponds to the steel wire binding bundle perforation of the third area, and the fourth pulley corresponds to the steel wire binding bundle perforation of the fourth area.
The invention has the following advantages:
the steel strand bundle integral perforating tunnel construction frame body device for the tower and the installation method thereof can solve the problem that the steel strand is quickly penetrated into a prestress tunnel to ensure the special construction quality of prestress in the prior art, are particularly suitable for the steel strand bundle integral perforating tunnel construction of the ultrahigh tower, and have the following advantages:
(1) For the hybrid tower installation cost, the hoisting cost accounts for a large part of the construction cost; when the steel wire binding bundles of the winch are put down from the operation platform at the beginning of the special construction of prestress, the construction can be carried out; thereby saving the cost of the machine shift.
(2) During construction, the whole steel strand bundle is directly penetrated into the pore canal through the construction frame body device for the steel strand bundle for the tower and the installation method of the construction frame body device, so that the construction efficiency is greatly improved, and the construction period is saved.
(3) During construction, the whole steel strand bundle is penetrated, so that the blocking phenomenon caused by perforation of a single steel strand bundle is avoided, useless construction time is reduced, and construction period is saved.
(4) Because the operation platform in the prior art is larger, the construction worker has larger operation risk, and when the tower crane is adopted to hoist the steel strand for perforation, the requirement on accuracy is very high, so that the tower crane in the prior art cannot reach the required accuracy.
Drawings
Fig. 1 is a schematic structural view of a steel strand bundle integral tunnel penetrating construction frame body device for a tower.
Fig. 2 is a schematic view of the structure of the steel strand bundle perforation of the first pulley of the tower steel strand bundle integral perforation construction frame device corresponding to the respective areas.
Fig. 3 is a front view of a connection steel plate of the steel strand bundle integral tunnel construction frame device for a tower of the present invention.
Fig. 4 is a plan view showing a connection steel plate of the steel strand bundle whole tunnel construction frame device for a tower of the present invention.
In the figure, 1 is a construction frame body, 2 is a connecting steel plate, 201 is a steel pipe, 202 is a steel plate on two sides, 301 is a first pulley, 3011 is a first pulley, 3012 is a second pulley, 3013 is a third pulley, 3014 is a fourth pulley, 302 is a second pulley, 4 is an operation platform, 5 is a prestressed duct, 6 is a concrete tower, 7 is a conical guide head, 8 is a whole steel strand bundle, 9 is a steel wire binding bundle, 10 is an anti-lateral sliding part, 1101 is a first region, 1102 is a second region, 1103 is a third region, 1104 is a fourth region.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1, the steel strand bundle integral hole-penetrating construction frame body device for the tower comprises a construction frame body 1 with a frame structure, wherein the lower end of the construction frame body 1 is connected with a connecting steel plate 2, the lower end of the connecting steel plate 2 is fixed on the top surface of a concrete tower cylinder 6, at least two first pulleys 301 are uniformly distributed on the top surface of the concrete tower cylinder 6, at least two second pulleys 302 are uniformly distributed at the middle position above the first pulleys 301, the number of the two first pulleys 301 and the number of the second pulleys 302 are the same, and each first pulley 301 is matched with one second pulley 302 to form a pulley block; the whole steel strand bundle 8 is bundled into at least two steel wire bundling bundles 9 on the ground, a conical guide head 7 is arranged at the end part of each steel wire bundling bundle 9, the steel wire bundling bundles 9 sequentially bypass a first pulley 301 and a second pulley 302, and the top part of each steel wire bundling bundle 9 passes through a prestressed duct 5 after passing through a construction frame body 1; the first pulley 301 and the second pulley 302 are each provided with the lateral sliding prevention member 10.
The whole tunnel construction support body device of steel strand bundle for pylon of this embodiment, construction support body 1 can set up to the frame construction of the trapezoidal section of thick bamboo of falling, and construction support body 1 can set up to the frame construction of the isosceles trapezoid section of thick bamboo of falling. The construction frame body 1 can be a metal frame body, and the construction frame body 1 and the connecting steel plate 2 can be connected through a welding structure. The first pulley 301 may be mounted at the upper end of the frame structure of the inverted isosceles trapezoid drum of the construction frame body 1. The frame structure of the inverted isosceles trapezoid cylinder of the construction frame body 1 can be connected with a trapezoid cylinder frame structure, and the trapezoid cylinder frame structure can be an isosceles trapezoid cylinder frame structure. A second pulley 302 may be provided at the upper end of the isosceles trapezoid drum frame structure. The frame structure of the inverted isosceles trapezoid cylinder of the construction frame body 1 and the trapezoid cylinder frame structure can be connected through a welding structure. The construction frame body 1 is connected with the connecting steel plate 2 through a welding structure on the ground, and then the connecting structure of the construction frame body 1 and the connecting steel plate 2 is fixed on the top surface of the concrete tower 6, wherein the construction frame body 1 and the connecting steel plate 2 can realize self-stress stability in working, and the prestress pore canal 5 penetrating ribs cannot be influenced when the construction frame body 1 is placed. The whole steel strand bundle 8 is bound into at least two steel wire binding bundles 9 on the ground, the bullet-shaped conical guide heads 7 are arranged at the end parts of the steel wire binding bundles 9, then the steel wire binding bundles 9 are lifted up from the ground by a winch at the top, the angle direction of the whole steel strand bundle 8 is changed after the steel wire binding bundles pass through the construction frame body 1 at the top through the first pulley 301 and the second pulley 302, then the steel wire binding bundles correspondingly penetrate into the prestress hole 5, the first pulley 301 and the second pulley 302 are respectively provided with a lateral sliding prevention piece 10, and the tensioning work is carried out subsequently, wherein the first pulley 301 and the second pulley 302 can be universal wheels with direction locking components, so that the directions of the planes of the pulley bodies of the first pulley 301 and the second pulley 302 can be changed, and the direction locking components can be locking screw holes and locking bolts arranged in the locking screw holes, namely the locking bolts are screwed up, so that the construction frame body 1 is tightly pushed by the locking bolts, and the fixing of the first pulley 301 and the second pulley 302 is realized. The tail part of the last bundle of steel wire binding bundles 9 is connected with the end part of the next bundle of steel wire binding bundles 9 through a connecting component, and then continuous operation is carried out through a winch, so that the up-and-down repeated lifting time of the winch is reduced; the connection assembly may be a stranded rope. The first pulley 301 and the second pulley 302 are both provided with the lateral sliding prevention member 10, so that the steel strand bundle for the tower in the embodiment is ensured to integrally penetrate through the tunnel construction frame body device in the running process, the sliding of the steel strand bundle 9 is avoided, the occurrence of risks is prevented, and the construction safety is improved. The number of the first pulleys 301 and the second pulleys 302 can be flexibly arranged according to factors such as the number of the whole steel strand bundles 8, the rigidity of the steel strands, the size of the prestressed duct 5 and the like in construction.
Preferably, the concrete tower 6 is provided with an operating platform 4. Therefore, the work with larger dangers such as cutting, bundling and the like of the prestressed steel strands with specific lengths is completed on the ground, and workers only perform the bundling and tensioning work on the whole steel strand bundles on the upper platform, so that surrounding dangerous factors are reduced, the construction accident rate is reduced, and the construction safety is improved.
Preferably, referring to fig. 2, the number of first pulleys 301 and second pulleys 302 is four, and each first pulley 301 is perforated by a steel strand bundle corresponding to its respective region. That is, the number of the first pulleys 301 and the second pulleys 302 is set to four, and the four first pulleys 301 include a first pulley 3011, a second first pulley 3012, a third first pulley 3013, and a fourth first pulley 3014; the first pulley 3011 is perforated with wire bundles 9 of zone 1101, the second pulley 3012 is perforated with wire bundles 9 of zone 1102, the third pulley 3013 is perforated with wire bundles 9 of zone 1103, and the fourth pulley 3014 is perforated with wire bundles 9 of zone 1104.
Preferably, referring to fig. 3 and 4, the joint steel plate 2 includes a transverse steel pipe 201 and longitudinal side steel plates 202, and both ends of the steel pipe 201 are respectively connected to upper ends of the side steel plates 202. In this way, the attachment of the connection steel plate 2 can be facilitated.
Preferably, the steel pipe 201 is located on the top surface of the concrete tower 6 and contacts the top surface of the concrete tower 6; the two side steel plates 202 extend into the side walls of the concrete tower 6 below the top surface of the concrete tower 6. In this way, the steel plate 2 can be conveniently connected with the top surface of the concrete tower 6 in a fixed way.
Preferably, the lateral sliding prevention member 10 is provided as a plate-like member in contact with the entire strand bundle 8. This can facilitate the installation of the lateral sliding prevention member 10.
Preferably, the plate surface of the lateral sliding prevention member 10 is located in the same plane as a radial tangential plane of the first pulley 301, which passes through the center of the first pulley 301. In this way, the anti-slip effect of the lateral slip-off prevention member 10 on the wire bundle 9 can be improved.
Example 2
A method of installing a steel strand bundle integral tunnel construction frame device for a tower according to embodiment 1, the method comprising the steps of:
the construction frame body 1 is connected with the connecting steel plate 2 on the ground through a welding structure, and the lower end of the connecting steel plate 2 is connected with the top surface of the concrete tower 6;
binding the whole steel strand bundle 8 into at least two steel wire binding bundles 9 on the ground, installing a conical guide head 7 at the end part of the steel wire binding bundles 9, sequentially winding the whole steel strand bundle 8 around a first pulley 301 and a second pulley 302, and hoisting the steel wire binding bundles 9 from the ground through a top winch above, so that the top of the steel wire binding bundles 9 passes through a prestressed duct 5 after passing through a construction frame body 1; the lateral sliding preventing member 10 is provided on both the first pulley 301 and the second pulley 302.
Preferably, the number of the first pulleys 301 and the second pulleys 302 is set to four, and the four first pulleys 301 include a first pulley 3011, a second pulley 3012, a third pulley 3013, and a fourth pulley 3014; the first pulley 3011 is perforated with wire bundles 9 of zone 1101, the second pulley 3012 is perforated with wire bundles 9 of zone 1102, the third pulley 3013 is perforated with wire bundles 9 of zone 1103, and the fourth pulley 3014 is perforated with wire bundles 9 of zone 1104.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (9)
1. The steel strand bundle integral channel penetrating construction frame body device for the tower comprises a construction frame body (1) with a frame structure, wherein the lower end of the construction frame body (1) is connected with a connecting steel plate (2), and the lower end of the connecting steel plate (2) is fixed on the top surface of a concrete tower cylinder (6); the whole steel strand bundle (8) is bundled into at least two steel wire bundling bundles (9) on the ground, a conical guide head (7) is arranged at the end part of each steel wire bundling bundle (9), the steel wire bundling bundles (9) sequentially bypass a first pulley (301) and a second pulley (302), and the tops of the steel wire bundling bundles (9) pass through a prestressed duct (5) after passing through a construction frame body (1); the first pulley (301) and the second pulley (302) are provided with lateral sliding prevention pieces (10); the construction frame body (1) is connected with the connecting steel plate (2) on the ground through a welding structure; the construction frame body (1) is arranged into a frame structure of an inverted isosceles trapezoid cylinder, and the first pulley (301) is arranged at the upper end of the frame structure of the inverted isosceles trapezoid cylinder of the construction frame body (1); an isosceles trapezoid cylinder frame structure is connected to the upside of the frame structure of the inverted isosceles trapezoid cylinder of the construction frame body (1), and a second pulley (302) is arranged at the upper end of the isosceles trapezoid cylinder frame structure.
2. A steel strand bundle integral tunnel construction frame body device for a tower according to claim 1, wherein an operation platform (4) is arranged in the concrete tower barrel (6).
3. A steel strand bundle integral tunnel construction frame device for a tower according to claim 2, wherein the number of the first pulleys (301) and the second pulleys (302) is four, and each first pulley (301) is perforated by the steel strand bundle corresponding to the respective area.
4. A steel strand bundle integral tunnel construction frame device for a tower as claimed in claim 3, wherein the connecting steel plates (2) comprise transverse steel pipes (201) and longitudinal two-sided steel plates (202), and both ends of the steel pipes (201) are respectively connected with upper ends of the two-sided steel plates (202).
5. A steel strand bundle integral tunnel construction frame body device for a tower according to claim 4, wherein the steel pipe (201) is positioned on the top surface of the concrete tower (6) and is in contact with the top surface of the concrete tower (6); the steel plates (202) on two sides extend into the side wall of the concrete tower (6) below the top surface of the concrete tower (6).
6. A steel strand bundle integral tunnel construction frame device for a tower according to claim 5, characterized in that the lateral sliding prevention member (10) is provided as a plate member in contact with the entire steel strand bundle (8).
7. A steel strand bundle integral tunnel construction frame device for a tower as claimed in claim 6, wherein the plate surface of the lateral sliding prevention member (10) and the radial tangential plane of the first pulley (301) are located in the same plane, and the radial tangential plane passes through the center of the first pulley (301).
8. A method of installing a steel strand bundle integral tunnel construction frame device for a tower according to any one of claims 1 to 7, wherein the method comprises the steps of:
connecting the construction frame body (1) with the connecting steel plate (2) on the ground through a welding structure, and connecting the lower end of the connecting steel plate (2) with the top surface of the concrete tower (6);
binding the whole steel strand bundle (8) into at least two steel wire binding bundles (9) on the ground, installing a conical guide head (7) at the end part of the steel wire binding bundles (9), sequentially winding the whole steel strand bundle (8) around a first pulley (301) and a second pulley (302), and hoisting the steel wire binding bundles (9) from the ground through a top winch above, so that the top of the steel wire binding bundles (9) passes through a prestressed duct (5) after passing through a construction frame body (1); the first pulley (301) and the second pulley (302) are provided with lateral sliding prevention pieces (10).
9. The method for installing the steel strand bundle integral tunnel construction frame device for a tower according to claim 8, wherein the number of the first pulleys (301) and the second pulleys (302) is four, and the four first pulleys (301) include a first pulley (3011), a second pulley (3012), a third pulley (3013) and a fourth pulley (3014); the first pulley (3011) is perforated corresponding to the steel wire binding bundle (9) of the first area (1101), the second pulley (3012) is perforated corresponding to the steel wire binding bundle (9) of the second area (1102), the third pulley (3013) is perforated corresponding to the steel wire binding bundle (9) of the third area (1103), and the fourth pulley (3014) is perforated corresponding to the steel wire binding bundle (9) of the fourth area (1104).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058699.1A CN109372311B (en) | 2018-09-11 | 2018-09-11 | Steel strand bundle integral tunnel penetrating construction frame body device for tower and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058699.1A CN109372311B (en) | 2018-09-11 | 2018-09-11 | Steel strand bundle integral tunnel penetrating construction frame body device for tower and installation method thereof |
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| CN109372311A CN109372311A (en) | 2019-02-22 |
| CN109372311B true CN109372311B (en) | 2024-02-23 |
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Families Citing this family (2)
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| CN112282373A (en) * | 2020-09-23 | 2021-01-29 | 安徽省力通稀土钢缆有限公司 | Steel strand bundle integral perforation tunnel scaffold for tower |
| CN114960627B (en) * | 2022-05-20 | 2023-03-10 | 中国建筑第二工程局有限公司 | Construction method of overlong slow-bonding prestressed cast-in-place pile |
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