CN112943549A - Concrete tower cylinder steel strand pulling construction method - Google Patents
Concrete tower cylinder steel strand pulling construction method Download PDFInfo
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- CN112943549A CN112943549A CN202110141448.5A CN202110141448A CN112943549A CN 112943549 A CN112943549 A CN 112943549A CN 202110141448 A CN202110141448 A CN 202110141448A CN 112943549 A CN112943549 A CN 112943549A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 241
- 239000010959 steel Substances 0.000 title claims abstract description 241
- 239000004567 concrete Substances 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title claims abstract description 49
- 230000000149 penetrating effect Effects 0.000 claims abstract description 14
- 238000004873 anchoring Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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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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- 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
- F03D13/10—Assembly of wind motors; Arrangements for erecting 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
-
- 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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- Mechanical Engineering (AREA)
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Abstract
The invention relates to a concrete tower cylinder steel strand pulling construction method, which sequentially comprises the following steps: hoisting and fixing a winch (2) on a construction platform (11), and winding a steel wire rope (21) on the winch; a supporting steel frame (15) with a lifting point is fixedly arranged on the top of the concrete tower tube (1), and a certain lifting point is selected and a fixed pulley (13) is suspended; a reel (31) is arranged on the ground outside the door opening (14) and the steel strand (3) is placed on the reel; the end part of the steel wire rope (21) penetrates through the fixed pulley and the reserved hole of the top steel strand and is lowered to the ground on the inner side of the door opening; one end of the steel strand is connected with the end part of the steel wire rope; rotating a winch to drive the steel strand to rise, anchoring one end of the steel strand at the top of the concrete tower barrel, cutting the part of the steel strand close to the ground to obtain the other end of the steel strand and fixedly arranging the other end of the steel strand in a reserved hole of the bottom steel strand; and rotating the winch to place the end part of the steel wire rope down to the ground on the inner side of the door opening again, connecting the end part of the steel wire rope with the residual steel stranded wire and continuously penetrating the steel stranded wire until the completion.
Description
Technical Field
The invention relates to a wind power tower cylinder with a reinforced concrete structure, in particular to a concrete tower cylinder steel strand pulling construction method.
Background
Wind power generation has been widely used as a clean energy technology, and with the development of wind power tower drum height, the tower drum height of the current domestic onshore wind power generator set reaches 120-160 meters, if the wind power tower drum is made of steel tower drum with lower rigidity, the tower drum body is easy to generate resonance, thereby causing damage. At present, a wind power tower cylinder mostly adopts a steel-concrete (steel-concrete) structure, the concrete tower cylinder is adopted at the lower part of a tower cylinder body, the steel tower cylinder is adopted at the upper part of the tower cylinder body, the height ratio of the concrete tower cylinder and the steel tower cylinder is determined by the frequency and the economical efficiency of the wind power tower cylinder, and the steel-concrete structure can effectively improve the rigidity of the tower cylinder and ensure that the problem that the tower cylinder generates resonance is avoided. The concrete tower drum is prefabricated in sections and segments and assembled and hoisted on site, and prestress is applied to the whole concrete tower drum by a plurality of bundles of prestress steel strands (steel strands for short) after hoisting is finished, so that the concrete tower drum forms a whole.
Under the general condition, about 200-300 steel strands need to be arranged on each concrete tower barrel, so the steel strand pulling is time-consuming work and can be completed within 3-4 days generally. The traditional steel strand pulling method comprises the following steps: referring to fig. 1, the wind power tower cylinder comprises a foundation (not shown in the figure) and a concrete tower cylinder 1, wherein a construction platform 11 and a temporary hanging bracket 12 are arranged at the top of the concrete tower cylinder 1, a fixed pulley 13 is arranged on the temporary hanging bracket 12, a door opening 14 is arranged on one side of the bottom of the concrete tower cylinder 1, and a winch 2 is arranged on the ground outside the wind power tower cylinder; the steel strand 3 is cut off according to the material-dropping requirement and placed on the ground outside the wind power tower cylinder, and the steel strand 3 enters the concrete tower cylinder 1 from the door opening 14; a steel wire rope 21 on the winch 2 firstly passes through the fixed pulley 13, then turns downwards to pass through a steel strand preformed hole at the top of the concrete tower tube 1, continues downwards and is connected with one end of the steel strand 3; and rotating the winch 2, drawing the steel strand 3 through a steel wire rope 21 on the winch 2, and lifting one end of the steel strand 3 to the top of the concrete tower barrel 1 for anchoring. Such a method has the following problems:
1. the steel strand needs to be cut according to the requirement of the length of the blanking in advance and placed on the ground outside the wind power tower, so that a temporary construction site which is dozens of meters long and several meters wide is generally needed, and the temporary land acquisition cost is increased.
2. The winch is placed on the ground, and the winch can be subjected to upward tension when the steel strand is lifted, the self weight of the winch is often not enough to offset the tension, and an additional counter weight or a ground anchor is usually required to be arranged. And moreover, the steel strand preformed hole on the concrete tower barrel is arranged along the circumferential direction, so that the fixed pulley position needs to be consistent with the position of the steel strand preformed hole which needs to be penetrated, and meanwhile, the position of the winch also needs to be correspondingly adjusted. For example, when a steel strand at the position of a door opening needs to be threaded, the winch needs to be placed on the ground on the side of the door opening, and when the steel strand at the position opposite to the door opening needs to be threaded, the winch needs to be placed on the ground on the other side opposite to the door opening, otherwise the steel wire rope interferes with the concrete tower barrel during the movement process.
3. When a steel wire rope of the winch lifts a steel strand to the top of the concrete tower barrel, the inner side of the fixed pulley is only 2-3 meters of steel wire rope generally, and the outer side of the fixed pulley is provided with dozens of meters or even hundreds of meters of steel wire rope to the winch, even if the winch is rotated reversely, the steel wire rope on the inner side of the fixed pulley cannot automatically fall down, the steel wire rope needs to be pulled down by a traction rope 22 manually, and then the steel wire rope is connected with the next steel strand needing to be threaded for construction.
4. At the in-process that promotes the steel strand wires, the interim gallows at concrete tower bobbin top still can receive the force in the horizontal direction except that the atress in vertical direction, still need receive the wind load effect simultaneously, consequently only lean on the dead weight of interim gallows to prevent that the level from sliding and toppling still to have certain construction risk.
Disclosure of Invention
The invention aims to provide a concrete tower drum steel strand pulling construction method, which realizes steel strand pulling through the arrangement of a winch and a supporting steel frame on a construction platform at the top of a concrete tower drum and through a lifting point on the supporting steel frame corresponding to a steel strand preformed hole, is easy to realize operation steps, can improve the steel strand pulling efficiency and can reduce the construction cost.
The invention is realized by the following steps:
a concrete tower drum steel strand bundle penetrating construction method is characterized in that a concrete tower drum is arranged on a wind power tower drum foundation, a plurality of bottom steel strand preformed holes are formed in the wind power tower drum foundation, a construction platform and a plurality of top steel strand preformed holes are formed in the top of the concrete tower drum, the bottom steel strand preformed holes and the top steel strand preformed holes are aligned one by one, and a door opening is formed in one side of the bottom of the concrete tower drum; the construction method comprises the following steps:
firstly, hoisting and fixing a winch on a construction platform, and winding a steel wire rope on the winch;
step two, fixedly arranging a supporting steel frame on the top of the concrete tower barrel, arranging a plurality of lifting points matched with the preformed holes of the top steel strands on the supporting steel frame, selecting one lifting point and hanging a fixed pulley;
step three, fixedly arranging a door top steel pipe in the horizontal direction below the top of the inner side of the door opening, and fixedly arranging a door bottom steel pipe in the horizontal direction above the bottom of the outer side of the door opening; arranging a reel on the ground outside the door opening, and placing the steel strand transported to the site on the reel;
sequentially passing the steel wire rope through the fixed pulley and a certain top steel strand preformed hole, and rotating the winch to lower the end part of the steel wire rope to the ground at the inner side of the door opening; one end of the steel strand enters the concrete tower barrel through the door opening and is connected with the end part of the steel wire rope;
step five, rotating the winch and driving the steel strand to ascend by the steel wire rope, removing the connection between the steel strand and the steel wire rope when one end of the steel strand ascends to the top of the concrete tower cylinder and penetrates through the reserved hole of the top steel strand, anchoring one end of the steel strand on an anchorage device at the top of the concrete tower cylinder, cutting the part of the steel strand close to the ground according to the strand-penetrating length requirement to obtain the other end of the steel strand, and fixedly arranging the other end of the steel strand in the reserved hole of the bottom steel strand corresponding to the reserved hole of the top steel strand;
step six, rotating the winch to place the end part of the steel wire rope down to the ground on the inner side of the door opening again, then connecting the end part of the steel wire rope with the remaining steel stranded wires cut on the ground, and repeating the step five until all the steel stranded wires required to be arranged in the top steel stranded wire preformed hole and the bottom steel stranded wire preformed hole are fixed in a penetrating manner;
and step seven, hanging the fixed pulleys to other hoisting points one by one, and repeating the step three to the step six until all the steel strands required to be arranged on the concrete tower barrel are fixed in a penetrating manner.
In the second step, a supporting steel frame is assembled on the ground firstly, the supporting steel frame comprises a plurality of upright posts and a plurality of cross beams, the cross beams are fixedly connected in sequence to form a regular polygon, the diameter of a circumscribed circle of the regular polygon is matched with the diameter of a reference circle of the preformed hole of the top steel strand, the upper end of each upright post is fixedly connected to the joint of the adjacent cross beams through bolts, and a lifting point is fixedly arranged at the lower part of each cross beam; and then, the supporting steel frame is hung at the top of the concrete tower barrel, and the lower end of each upright post is fixedly connected to the top of the concrete tower barrel through a bolt.
And in the third step, protective layers are coated on the door top steel pipe and the door bottom steel pipe respectively.
And in the sixth step, the end part of the steel wire rope is pulled downwards to the lower part of the construction platform through manpower while the winch is rotated.
According to the construction method for pulling the steel strand of the concrete tower barrel, firstly, the coiled steel strand transported to the site is directly placed on the reel, and the coiled steel strand does not need to be cut and flatly laid on the bottom surface according to the requirement of material pressing length in advance, so that temporary sites of hundreds of square meters can be reduced, temporary land acquisition cost is reduced, and cost saving is facilitated.
Secondly, the hoist engine is fixed to be placed on the construction platform at concrete tower section of thick bamboo top, utilizes the firm connected relation of construction platform and concrete tower section of thick bamboo to ensure that the atress of hoist engine can reliably be transmitted to concrete tower section of thick bamboo, need not extra counter weight measure. Meanwhile, the winch is located in the middle of the construction platform, and the winch does not need to be moved no matter which direction of the steel strand preformed hole is subjected to steel strand penetrating construction.
Moreover, after the steel wire rope hoists the steel wire to the top of the concrete tower barrel and releases the connection relation with the steel wire, the end part of the steel wire rope needs to be placed again for subsequent strand penetrating work, the end part of the steel wire rope only needs to be manually pulled downwards to a construction platform for placing, and the end part of the steel wire rope can be slowly descended by utilizing the dead weight of the steel wire rope.
In addition, the supporting steel frame is fixedly connected with the concrete tower barrel through the upright posts, and even if the supporting steel frame is subjected to wind load or other horizontal loads, the supporting steel frame can be guaranteed not to slide and overturn.
Compared with the prior art, the invention has the following beneficial effects: the steel strand is not required to be subjected to pre-blanking and cutting, the counterweight of a winch is not required to be additionally provided, the winch is not required to be moved for many times, the steel wire rope is moved up and down in a reciprocating manner, the operation is easy, the strand penetrating construction efficiency is effectively improved, and the strand penetrating construction risk of the steel strand is reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art construction method for pulling steel strands of a concrete tower tube;
fig. 2 is a schematic diagram of the concrete tower tube steel strand pulling construction method.
In the figure, 1 concrete tower tube, 11 construction platforms, 12 temporary hangers, 13 fixed pulleys, 14 door openings, 15 supporting steel frames, 16 door top steel tubes, 17 door bottom steel tubes, 2 windlasses, 21 steel wire ropes, 22 hauling ropes, 3 steel stranded wires and 31 reels.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 2, a concrete tower drum 1 is arranged on a wind power tower drum foundation (not shown in the figure), a plurality of bottom steel strand preformed holes are circumferentially arranged on the wind power tower drum foundation, a plurality of top steel strand preformed holes are circumferentially arranged on the top of the concrete tower drum 1, the bottom steel strand preformed holes and the top steel strand preformed holes are aligned one by one, a construction platform 11 is arranged on the top of the concrete tower drum 1, and a door opening 14 is arranged on one side of the bottom of the concrete tower drum 1.
And a supporting steel frame 15 is fixedly arranged at the top of the concrete tower tube 1. The supporting steel frame 15 includes a plurality of columns and a plurality of beams, the number of the columns and the number of the beams are the same, and the columns and the beams can be made of i-steel, channel steel and the like. A plurality of crossbeams level sets up and in proper order the rigid coupling form regular polygon or call regular n polygon, and n generally takes value to be 4~8, and regular n polygon's circumscribed circle diameter and the reference circle diameter of top steel strand wires preformed hole cooperate, and the fixed hoisting point that sets up in lower part of every crossbeam for hang fixed pulley 13, the quantity of hoisting point is the same with the quantity of top steel strand wires preformed hole, and the position of hoisting point cooperatees with the position of top steel strand wires preformed hole. Bolt fixed connection is passed through with the upper end of stand in adjacent crossbeam junction, and the lower extreme setting of stand has the end plate of screw for pass through bolt fixed connection with concrete tower section of thick bamboo 1, the height of stand is 1~2 meters.
The concrete tower cylinder steel strand pulling construction method specifically comprises the following steps:
step one, a winch 2 is hoisted to a construction platform 11, the winch 2 is fixed on the construction platform 11 through bolts and is close to the axis of a concrete tower barrel 1, a steel wire rope 21 is wound on the winch 2, and the steel wire rope 21 is used for drawing a steel strand 3.
And step two, assembling the supporting steel frame 15 on the ground, fixedly connecting the plurality of cross beams and the plurality of stand columns one by one, then hoisting the supporting steel frame 15 to the top of the concrete tower cylinder 1, and fixedly connecting the lower end of each stand column to the top of the concrete tower cylinder 1 through bolts. And the hoisting points on the supporting steel frame 15 correspond to the preformed holes of the top steel strands one by one along the radial direction, and a certain hoisting point is selected and the fixed pulley 13 is hung.
And step three, fixedly arranging a door top steel pipe 16 in the horizontal direction below the top of the inner side of the door opening 14, and fixedly arranging a door bottom steel pipe 17 in the horizontal direction above the bottom of the outer side of the door opening 14. A reel 31 is arranged on the ground outside the door opening 14, the reel 31 is about 2-5 m away from the door opening, and the steel strand 3 transported to the site is placed on the reel 31.
Preferably, the door top steel tube 16 is located about 20 centimeters below the top of the door opening 14 and the door bottom steel tube 17 is located about 20 centimeters above the bottom of the door opening 14. The door top steel pipe 16 and the door bottom steel pipe 17 are both coated with protective layers which can be color strip cloth. Through set up the door top steel pipe and the door end steel pipe of various strip cloth of outsourcing in door opening department, can effectively avoid the steel strand wires to get into concrete tower section of thick bamboo and door opening edge concrete direct friction, can prevent that the protective layer overcoat of steel strand wires can not damage.
And step four, enabling the steel wire rope 21 to penetrate through the fixed pulley 13, selecting a certain top steel strand preformed hole to enable the steel wire rope 21 to penetrate through the top steel strand preformed hole downwards, and rotating the winch 2 to lower the end part of the steel wire rope 21 to the ground on the inner side of the door opening 14. One end of the steel strand 3 enters the concrete tower tube 1 through the door opening 14 and is firmly connected with the end part of the steel wire rope 21.
And step five, rotating the winch 2 and driving the steel strand 3 to ascend by the steel wire rope 21, when one end of the steel strand 3 ascends to the top of the concrete tower barrel 1 and penetrates through the top steel strand preformed hole, removing the connection between the steel strand 3 and the steel wire rope 21, anchoring one end of the steel strand 3 on an anchorage device at the top of the concrete tower barrel 1, cutting the part, close to the ground, of the steel strand 3 according to the strand penetrating length requirement to obtain the other end of the steel strand 3, and fixedly arranging the other end of the steel strand 3 in a bottom steel strand preformed hole corresponding to the top steel strand preformed hole.
And step six, rotating the winch 2, simultaneously manually pulling the end part of the steel wire rope 21 downwards to the lower part of the construction platform, slowly descending the steel wire rope 21 by utilizing the self weight of the steel wire rope, lowering the end part of the steel wire rope 21 to the ground at the inner side of the door opening 14, connecting the steel wire rope with the residual steel strands 3 cut on the ground, and repeating the step five until all the steel strands required to be arranged in the pair of top steel strand preformed holes and the bottom steel strand preformed holes are fixed in a penetrating mode.
And step seven, hanging the fixed pulleys 13 to other hoisting points one by one, and repeating the steps three to six until all the steel strands 3 required to be arranged on the concrete tower tube 1 are fixed in a penetrating manner.
In this embodiment, the beams supporting the steel frame form a regular octagon, the height of the columns is about 1.5 m, the number of the beams and the number of the columns are both 8, and the beams and the columns are both made of 16 h-steel. The lower end plate of the upright post is provided with 2 screw holes. The number of the top steel strand preformed holes and the number of the bottom steel strand preformed holes are both 16, so that the number of the hoisting points is also 16, and the hoisting points are in one-to-one correspondence with the positions of the top steel strand preformed holes along the radial direction. The reel is placed on the ground about 4 meters outside the door opening.
The invention relates to a concrete tower cylinder steel strand threading construction method, which transfers the position of a winch in the traditional threading construction method to a construction platform at the top of a concrete tower cylinder, adds a supporting steel frame which can be fixed at the top of the concrete tower cylinder, can provide a plurality of hanging points for hanging fixed pulleys so as to meet the steel strand threading requirements in different directions, simplifies the steel strand threading construction steps and is easy to operate by changing the traction position of the winch and utilizing the characteristics of the dead weight of the construction platform and a steel wire rope, contributes to improving the construction efficiency and reducing the construction cost, and reduces the construction risk.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A concrete tower drum steel strand bundle threading construction method is characterized in that a concrete tower drum (1) is arranged on a wind power tower drum base, a plurality of bottom steel strand preformed holes are formed in the wind power tower drum base, a construction platform (11) and a plurality of top steel strand preformed holes are formed in the top of the concrete tower drum (1), the bottom steel strand preformed holes and the top steel strand preformed holes are aligned one by one, and a door opening (14) is formed in one side of the bottom of the concrete tower drum (1); the method is characterized in that: the construction method comprises the following steps:
firstly, hoisting and fixing a winch (2) on a construction platform (11), and winding a steel wire rope (21) on the winch (2);
step two, fixedly arranging a supporting steel frame (15) on the top of the concrete tower tube (1), arranging a plurality of hoisting points matched with the preformed holes of the top steel strands on the supporting steel frame (15), selecting one hoisting point and hanging a fixed pulley (13);
step three, a door top steel pipe (16) in the horizontal direction is fixedly arranged below the top of the inner side of the door opening (14), and a door bottom steel pipe (17) in the horizontal direction is fixedly arranged above the bottom of the outer side of the door opening (14); arranging a reel (31) on the ground outside the door opening (14), and placing the steel strand (3) transported to the site on the reel (31);
sequentially passing the steel wire rope (21) through the fixed pulley (13) and a certain top steel strand preformed hole, and rotating the winch (2) to lower the end part of the steel wire rope (21) to the ground at the inner side of the door opening (14); one end of the steel strand (3) enters the concrete tower tube (1) through the door opening (14) and is connected with the end part of the steel wire rope (21);
fifthly, rotating the winch (2) and driving the steel strand (3) to ascend through the steel wire rope (21), when one end of the steel strand (3) ascends to the top of the concrete tower cylinder (1) and penetrates through the reserved hole of the top steel strand, removing the connection between the steel strand (3) and the steel wire rope (21), anchoring one end of the steel strand (3) on an anchorage device at the top of the concrete tower cylinder (1), cutting the part, close to the ground, of the steel strand (3) according to the strand penetrating length requirement to obtain the other end of the steel strand (3), and fixedly arranging the other end of the steel strand (3) in the reserved hole of the bottom steel strand corresponding to the reserved hole of the top steel strand;
sixthly, rotating the winch (2) to place the end part of the steel wire rope (21) down to the ground on the inner side of the door opening (14), then connecting the end part with the steel strand (3) which is cut to be left on the ground, and repeating the fifth step until all the steel strands required to be arranged in the top steel strand preformed hole and the bottom steel strand preformed hole are fixed in a penetrating mode;
and step seven, hanging the fixed pulleys (13) to other hoisting points one by one, and repeating the step three to the step six until all the steel strands (3) required to be arranged on the concrete tower tube (1) are fixed in a penetrating manner.
2. The concrete tower drum steel strand pulling construction method according to claim 1, which is characterized in that: in the second step, a supporting steel frame (15) is assembled on the ground, the supporting steel frame (15) comprises a plurality of upright posts and a plurality of cross beams, the cross beams are fixedly connected in sequence to form a regular polygon, the diameter of a circumscribed circle of the regular polygon is matched with the diameter of a reference circle of a reserved hole of a steel strand at the top, the upper end of each upright post is fixedly connected to the connection position of the adjacent cross beams through bolts, and a lifting point is fixedly arranged at the lower part of each cross beam; and then, the supporting steel frame (15) is hung at the top of the concrete tower barrel (1), and the lower end of each upright post is fixedly connected to the top of the concrete tower barrel (1) through a bolt.
3. The concrete tower drum steel strand pulling construction method according to claim 1, which is characterized in that: and in the third step, protective layers are coated on the door top steel pipe (16) and the door bottom steel pipe (17) respectively.
4. The concrete tower drum steel strand pulling construction method according to claim 1, which is characterized in that: and in the sixth step, the end part of the steel wire rope (21) is pulled downwards to the lower part of the construction platform through manpower while the winch (2) is rotated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110141448.5A CN112943549A (en) | 2021-02-02 | 2021-02-02 | Concrete tower cylinder steel strand pulling construction method |
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| CN202110141448.5A CN112943549A (en) | 2021-02-02 | 2021-02-02 | Concrete tower cylinder steel strand pulling construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114408764A (en) * | 2022-04-02 | 2022-04-29 | 中国电建集团华东勘测设计研究院有限公司 | Lifting device and lifting method for outer steel strand of wind power concrete tower barrel |
| CN117605286A (en) * | 2024-01-23 | 2024-02-27 | 中国电建集团山东电力建设第一工程有限公司 | Wind power mixing tower prestress steel strand threading tool and method |
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| CN205955922U (en) * | 2016-07-28 | 2017-02-15 | 广东明阳风电产业集团有限公司 | Aerogenerator concrete tower section of thick bamboo segment structure |
| CN110259246A (en) * | 2019-06-27 | 2019-09-20 | 柳州欧维姆机械股份有限公司 | A kind of external stayed structure system of wind tower steel strand wires and its fabrication and installation method |
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| DE102010048547A1 (en) * | 2010-10-14 | 2012-04-19 | Kgw Schweriner Maschinen- Und Anlagenbau Gmbh | Tower for wind power plant, has several tower segments with supply scaffold elements comprising scaffold brackets that are connected to respective flanges |
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| CN205955922U (en) * | 2016-07-28 | 2017-02-15 | 广东明阳风电产业集团有限公司 | Aerogenerator concrete tower section of thick bamboo segment structure |
| CN110259246A (en) * | 2019-06-27 | 2019-09-20 | 柳州欧维姆机械股份有限公司 | A kind of external stayed structure system of wind tower steel strand wires and its fabrication and installation method |
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| CN114408764A (en) * | 2022-04-02 | 2022-04-29 | 中国电建集团华东勘测设计研究院有限公司 | Lifting device and lifting method for outer steel strand of wind power concrete tower barrel |
| CN114408764B (en) * | 2022-04-02 | 2022-07-12 | 中国电建集团华东勘测设计研究院有限公司 | Lifting device and lifting method for outer steel strand of wind power concrete tower barrel |
| CN117605286A (en) * | 2024-01-23 | 2024-02-27 | 中国电建集团山东电力建设第一工程有限公司 | Wind power mixing tower prestress steel strand threading tool and method |
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