CN108149932B - Beam penetrating device and beam penetrating method for prestress steel strand - Google Patents
Beam penetrating device and beam penetrating method for prestress steel strand Download PDFInfo
- Publication number
- CN108149932B CN108149932B CN201810070299.6A CN201810070299A CN108149932B CN 108149932 B CN108149932 B CN 108149932B CN 201810070299 A CN201810070299 A CN 201810070299A CN 108149932 B CN108149932 B CN 108149932B
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- Prior art keywords
- traction
- penetrating
- frame
- steel
- beam penetrating
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 106
- 230000000149 penetrating effect Effects 0.000 title claims abstract description 106
- 239000010959 steel Substances 0.000 title claims abstract description 106
- 238000011378 penetrating method Methods 0.000 title description 3
- 239000011148 porous material Substances 0.000 claims abstract description 35
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 10
- 210000002435 tendon Anatomy 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a beam penetrating device for prestress steel strand beam penetrating, which comprises a beam penetrating frame part and a beam collecting part which are positioned at one end of a prefabricated T beam, and a traction beam penetrating part positioned at the other end of the prefabricated T beam; the bundling part comprises an anchor and a traction net sleeve, a plurality of through holes are formed in the anchor, and steel strands with digital identifications sequentially penetrate through the through holes in the anchor corresponding to the digital identifications, then penetrate into the traction net sleeve and are integrated into a bundle under the constraint of the traction net sleeve; the traction and beam-passing part comprises a traction frame and a winch, and a steel wire rope of the winch passes through the rolling shaft and then penetrates into the corresponding pore canal to be connected with a traction net sleeve at the other end of the pore canal. The beam penetrating device is flexible to use, and avoids the phenomenon that the prestress steel strand is stirred during beam penetrating; meanwhile, the problem that part of single steel strands cannot penetrate bundles due to the fact that the cross section area in the hole is reduced due to slurry leakage of the corrugated pipe can be solved.
Description
Technical Field
The invention relates to the field of prefabricated building engineering, in particular to a device for integrally penetrating a prestressed steel strand bundle in a prefabricated T-beam.
Background
When the post-tensioning method prestressed concrete member is constructed, a pore channel is reserved in the reinforcement cage, and after concrete pouring is completed, the prestressed reinforcement is penetrated through the pore channel, and then subsequent operations such as tensioning and the like are carried out.
At present, the steel strand penetrating machine is generally adopted for penetrating the steel strand penetrating of the prefabricated T beam, in the penetrating process, a single steel strand is easily influenced by the steel strand which is penetrated in the corrugated pipe, so that the stirring phenomenon of the steel strand is caused, the friction resistance of the steel strand is increased in the subsequent tensioning process, the stress of the steel strand is uneven, and the stress condition of the prefabricated T beam is influenced. In addition, the problem that individual single steel strands cannot penetrate bundles due to the fact that the inner sectional area of the corrugated pipe is reduced because of slurry leakage of the corrugated pipe is also caused. Improvements in current beam threading devices and methods are needed.
Disclosure of Invention
The invention aims to: the invention aims to overcome the defects of the prior art, and provides a beam penetrating device for penetrating prestress steel strands, which can be used for penetrating a plurality of steel strands integrally, improving beam penetrating efficiency, avoiding stirring phenomenon of the steel strands in the beam penetrating process, and solving the problem that part of single steel strands cannot penetrate beams due to slurry leakage of a corrugated pipe and small sectional area in a hole;
another object of the present invention is to provide a method for threading prestressed steel strands by using the threading device.
The technical scheme is as follows: the invention discloses a beam penetrating device for prestress steel strand beam penetrating, which is characterized by comprising a beam penetrating frame part and a beam collecting part which are positioned at one end of a prefabricated T beam, and a traction beam penetrating part positioned at the other end of the prefabricated T beam;
the beam penetrating frame part comprises a frame body formed by welding angle steel and a plurality of beam penetrating plates fixed on the frame body, the number of the beam penetrating plates is consistent with that of the pore passages on the prefabricated T beam, and each beam penetrating plate is fixed on the position, opposite to the pore passages on the prefabricated T beam, of the frame body; the beam penetrating plate is provided with a plurality of through holes, and each through hole is provided with a digital mark and is used for corresponding to the steel strands penetrating into the through hole one by one;
the bundling part comprises an anchor and a traction net sleeve, a plurality of through holes are formed in the anchor, and the number, the positions and the digital identifications of the through holes in the anchor are consistent with those of the through holes in the bundling plate; the steel strands with the digital marks sequentially penetrate through the beam penetrating plate corresponding to the digital marks and the through holes on the anchor, then penetrate into the traction net sleeve, and a plurality of steel strands are integrated into a beam under the constraint of the traction net sleeve;
the traction beam penetrating part comprises a traction frame and a winch fixed on the traction frame, a cross rod is arranged on the traction frame at the position opposite to each pore canal on the prefabricated T beam, each cross rod is sleeved with a rolling shaft, the rolling shafts freely rotate around the cross rods, and a steel wire rope of the winch penetrates into the corresponding pore canal to be connected with a traction net sleeve at the other end of the pore canal after bypassing the rolling shafts.
The beam penetrating frame is a square frame formed by welding angle steel, the beam penetrating plate is arranged on one side, close to the prefabricated T beam, of the beam penetrating frame, a plurality of cross bars corresponding to the pore channels of the prefabricated T beam are arranged on one side, far away from the prefabricated T beam, of the beam penetrating frame, and beam penetrating frame rolling shafts are sleeved on the cross bars; after the steel stranded wires with the digital marks bypass the roller of the beam penetrating frame, the steel stranded wires penetrate through holes with corresponding digital marks on the beam penetrating plate.
Preferably, the bundling part further comprises one or more bundling rings, wherein the bundling rings are bound on the outer side of the traction net sleeve, and the steel stranded wires penetrating into the traction net sleeve are bound with the traction net sleeve.
Preferably, the traction net sleeve is connected with a steel wire rope of the winch through a U-shaped clamping ring.
Preferably, the cluster ring is made of iron wire.
Preferably, the bottom of the traction frame of the traction beam penetrating part is also provided with a roller and a locking piece matched with the roller for use, the roller drives the traction frame to move, and the locking piece positions the traction frame at a moving position.
Preferably, a control box is further arranged on the traction frame and electrically connected with the winch to control the work of the winch.
The beam penetrating method of the beam penetrating device comprises the following steps:
(1) Respectively placing the traction beam penetrating part and the beam penetrating frame part at two ends of the prefabricated T beam, and fixing the two parts;
(2) A steel wire rope of a winch passes through a pore canal of the prefabricated T beam around a rolling shaft, and whether a corrugated pipe in the pore canal is smooth or not is checked;
(3) According to the length of the pore canal, calculating the length of the steel strand which is actually required to be penetrated, cutting and blanking, numbering each steel strand of the same-bundle prestressed tendon, and pasting a digital mark;
(4) Sequentially penetrating the steel strands numbered in the step (3) through the through holes of the beam penetrating plate and the anchor with corresponding digital marks, sleeving a traction net sleeve on the steel strands after all the steel strands of the same beam of prestressed tendons are perforated, and stranding a plurality of steel strands under the constraint of the traction net sleeve;
(5) And (3) connecting and locking the traction net sleeve with the steel wire rope penetrating through the pore canal in the step (2), starting a winch, uniformly pulling the steel wire rope, driving the traction net sleeve and the steel strands to penetrate through the pore canal of the prefabricated T beam together by the steel wire rope until the leakage length of the steel strands meets the requirement, stopping the winch, unlocking the traction net sleeve, and penetrating the next bundle of prestressed tendons.
The beneficial effects are that: (1) The beam threading device is flexible to use, the steel strands are numbered by the beam threading frame before the beam threading, and the multi-strand steel strands are tied into one beam by the traction net sleeve, so that the phenomenon that the prestress steel strands are stirred during the beam threading is avoided, and the qualification rate of tensioning data is ensured; meanwhile, the traction net sleeve and the steel strands penetrate together, the problem that part of single steel strands cannot penetrate bundles due to slurry leakage of the corrugated pipe and small sectional area in the hole can be solved, and the whole bundle of prestressed tendons penetrate bundles simultaneously, so that the construction efficiency is greatly improved, and the construction method has good economic benefits;
(2) In order to ensure the smoothness of the steel strand running in the strand penetrating process, the fixing rods and the rolling shafts are respectively arranged on the strand penetrating frame and the traction frame, and the steel strand and the steel wire rope slide around the rolling shafts, so that the strand penetrating resistance of the steel strand is reduced;
(3) The bundling part also comprises one or more bundling rings, and the bundling rings are matched with the traction net sleeve to bind the steel strands, so that the steel strands are ensured to be firmly connected in the bundling process.
Drawings
FIG. 1 is a schematic view of a structure of a beam penetrating frame part according to the present invention;
FIG. 2 is a schematic view of the structure of the beam penetrating plate according to the present invention;
FIG. 3 is a schematic view of a bundling part according to the present invention;
FIG. 4 is a schematic view of the structure of the pulling and threading part according to the present invention;
in the figure, a 1-beam penetrating frame, a 2-beam penetrating plate, a 3-beam penetrating frame roller, 4-steel strands, a 5-anchorage device, a 6-traction net sleeve, a 7-bundling ring, an 8-U-shaped clamping ring, a 9-traction frame, a 10-winch, an 11-control box, a 12-roller, a 13-locking piece, a 14-roller and a 15-steel wire rope.
Detailed Description
The technical scheme of the invention is described in detail below through the drawings, but the protection scope of the invention is not limited to the embodiments.
Examples: a beam penetrating device for prestress steel strand beam penetrating comprises a beam penetrating frame part and a beam collecting part which are positioned at one end of a prefabricated T beam, and a traction beam penetrating part which is positioned at the other end of the prefabricated T beam.
The beam penetrating frame part comprises a beam penetrating frame 1 of a square frame structure formed by welding angle steel, a beam penetrating plate 2 arranged on one side of the beam penetrating frame 1 close to the prefabricated T beam, a plurality of cross bars corresponding to the pore channels of the prefabricated T beam on one side of the beam penetrating frame 1 far away from the prefabricated T beam, and beam penetrating frame rolling shafts 3 sleeved on the cross bars. The number of the beam penetrating plates 2 is consistent with that of the pore passages on the prefabricated T beam, and each beam penetrating plate 2 is fixed on the beam penetrating frame 1 at the position opposite to the pore passages on the prefabricated T beam; the beam penetrating plate 2 is provided with a plurality of through holes, and each through hole is provided with a digital mark and is used for corresponding to the steel strands penetrating into the through hole one by one.
The bundling part comprises an anchor 5 and a traction net sleeve 6, a plurality of through holes are formed in the anchor 5, and the number, the positions and the digital identifications of the through holes in the anchor 5 are consistent with those of the through holes in the bundling plate 2. After the steel strands 4 with the digital marks sequentially pass through the through holes on the beam penetrating plate 2 and the anchor 5 corresponding to the digital marks, the steel strands penetrate into the traction net sleeve 6, one or more bunching rings 7 made of iron wires are bound on the outer side of the traction net sleeve 6, and the bunching rings 7 bind the steel strands 4 into one bundle in the traction net sleeve 6.
The traction beam penetrating part comprises a traction frame 9 and a winch 10 fixed on the traction frame 9, a control box 11 of the winch 10 is positioned on the traction frame 9, and the control box 11 is electrically connected with the winch 10 to control the work of the winch 10. The bottom of the traction frame 9 is provided with a roller 12 and a locking piece 13 matched with the roller 12, the roller 12 drives the traction frame 9 to move, and the locking piece 13 positions the traction frame 9 in a moving position. A transverse rod is arranged on the traction frame 9 at the position opposite to each pore canal on the prefabricated T beam, a roller 14 is sleeved on each transverse rod, the roller 14 freely rotates around the transverse rod, and a steel wire rope 15 of the winch 10 passes through the roller 14 and then penetrates into the corresponding pore canal to be connected with a traction net sleeve 6 at the other end of the pore canal through a U-shaped clamping ring 8.
The method for threading the prestressed steel strands by the threading device comprises the following steps:
(1) Respectively placing the traction beam penetrating part and the beam penetrating frame part at two ends of the prefabricated T beam, and fixing the two parts;
(2) A steel wire rope 15 of the winch 10 passes through a pore canal of the prefabricated T beam around a roller 14, and whether a corrugated pipe in the pore canal is smooth or not is checked;
(3) According to the length of the pore canal, calculating the length of the steel strand 4 which is actually required to be penetrated, after cutting and blanking, numbering each steel strand of the same-bundle prestressed tendon, and pasting a digital mark;
(4) After the numbered steel strands 4 in the step (3) bypass the strand penetrating frame rolling shaft 3, sequentially penetrating through holes of the strand penetrating plate 2 and the anchor 5 with corresponding digital marks, and after all the steel strands 4 of the same strand of prestress rib are perforated, sleeving a traction net sleeve 6 on the steel strands 4, and stranding a plurality of steel strands 4 under the constraint of the traction net sleeve 6;
(5) And (3) connecting and locking the traction net sleeve 6 with the steel wire rope 15 penetrating through the hole in the step (2), starting the winch 10, pulling the steel wire rope 15 at a constant speed, and driving the traction net sleeve 6 and the steel strands 4 to penetrate through the hole of the prefabricated T beam together by the steel wire rope 15 until the leakage length of the steel strands 4 reaches the requirement, stopping the winch 10, unlocking the traction net sleeve 6, and penetrating the next tendon.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The beam penetrating device for the prestress steel strand beam penetrating is characterized by comprising a beam penetrating frame part and a beam collecting part which are positioned at one end of a prefabricated T beam, and a traction beam penetrating part which is positioned at the other end of the prefabricated T beam;
the beam penetrating frame part comprises a frame body formed by welding angle steel and a plurality of beam penetrating plates fixed on the frame body, the number of the beam penetrating plates is consistent with that of the pore passages on the prefabricated T beam, and each beam penetrating plate is fixed on the position, opposite to the pore passages on the prefabricated T beam, of the frame body; the beam penetrating plate is provided with a plurality of through holes, and each through hole is provided with a digital mark and is used for corresponding to the steel strands penetrating into the through hole one by one;
the bundling part comprises an anchor and a traction net sleeve, a plurality of through holes are formed in the anchor, and the number, the positions and the digital identifications of the through holes in the anchor are consistent with those of the through holes in the bundling plate; the steel strands with the digital marks sequentially penetrate through the beam penetrating plate corresponding to the digital marks and the through holes on the anchor, then penetrate into the traction net sleeve, and a plurality of steel strands are integrated into a beam under the constraint of the traction net sleeve;
the traction beam penetrating part comprises a traction frame and a winch fixed on the traction frame, a cross rod is arranged on the traction frame at the position opposite to each pore canal on the prefabricated T beam, each cross rod is sleeved with a rolling shaft, the rolling shafts freely rotate around the cross rods, and a steel wire rope of the winch penetrates into the corresponding pore canal to be connected with a traction net sleeve at the other end of the pore canal after bypassing the rolling shafts.
2. The beam penetrating device for penetrating prestressed steel strands according to claim 1, wherein the beam penetrating frame is a square frame formed by welding angle steel, the beam penetrating plate is arranged on one side, close to the prefabricated T beam, of the beam penetrating frame, a plurality of cross bars corresponding to the pore channels of the prefabricated T beam are arranged on one side, far away from the prefabricated T beam, of the beam penetrating frame, and beam penetrating frame rolling shafts are sleeved on the cross bars; after the steel stranded wires with the digital marks bypass the roller of the beam penetrating frame, the steel stranded wires penetrate through holes with corresponding digital marks on the beam penetrating plate.
3. The device for threading the prestressed steel strands according to claim 1, wherein the bundling part further comprises one or more bundling rings, the bundling rings are bound on the outer side of the traction net sleeve, and the steel strands penetrating into the traction net sleeve are bound with the traction net sleeve.
4. A wire harness threading device for threading prestressed steel strands according to claim 3, wherein the traction net cover is connected with a steel wire rope of the hoist by a U-shaped clasp.
5. A binding apparatus for binding prestressed steel strands according to claim 3, wherein said binding ring is made of iron wire.
6. The device for threading prestressed steel strands according to claim 1, wherein the bottom of the traction frame of the traction threading part is further provided with rollers and locking members used with the rollers, the rollers drive the traction frame to move, and the locking members position the traction frame in a moving position.
7. The device for threading the prestressed steel strands according to claim 6, wherein a control box is further arranged on the traction frame, and the control box is electrically connected with the winch and controls the operation of the winch.
8. A method of threading a bundle device according to claim 1, comprising the steps of:
(1) Respectively placing the traction beam penetrating part and the beam penetrating frame part at two ends of the prefabricated T beam, and fixing the two parts;
(2) A steel wire rope of a winch passes through a pore canal of the prefabricated T beam around a rolling shaft, and whether a corrugated pipe in the pore canal is smooth or not is checked;
(3) According to the length of the pore canal, calculating the length of the steel strand which is actually required to be penetrated, cutting and blanking, numbering each steel strand of the same-bundle prestressed tendon, and pasting a digital mark;
(4) Sequentially penetrating the steel strands numbered in the step (3) through the through holes of the beam penetrating plate and the anchor with corresponding digital marks, sleeving a traction net sleeve on the steel strands after all the steel strands of the same beam of prestressed tendons are perforated, and stranding a plurality of steel strands under the constraint of the traction net sleeve;
(5) And (3) connecting and locking the traction net sleeve with the steel wire rope penetrating through the pore canal in the step (2), starting a winch, uniformly pulling the steel wire rope, driving the traction net sleeve and the steel strands to penetrate through the pore canal of the prefabricated T beam together by the steel wire rope until the leakage length of the steel strands meets the requirement, stopping the winch, unlocking the traction net sleeve, and penetrating the next bundle of prestressed tendons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810070299.6A CN108149932B (en) | 2018-01-24 | 2018-01-24 | Beam penetrating device and beam penetrating method for prestress steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810070299.6A CN108149932B (en) | 2018-01-24 | 2018-01-24 | Beam penetrating device and beam penetrating method for prestress steel strand |
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| Publication Number | Publication Date |
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| CN108149932A CN108149932A (en) | 2018-06-12 |
| CN108149932B true CN108149932B (en) | 2024-01-19 |
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| CN201810070299.6A Active CN108149932B (en) | 2018-01-24 | 2018-01-24 | Beam penetrating device and beam penetrating method for prestress steel strand |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868155B (en) * | 2018-06-27 | 2020-10-20 | 中国核工业华兴建设有限公司 | Movable steel strand pulling guide device and use method thereof |
| CN112726961B (en) * | 2020-12-29 | 2022-03-22 | 福建省晓沃建设工程有限公司 | Prestressed steel strand laying device and method |
| CN113235941B (en) * | 2021-06-11 | 2022-08-23 | 中国建筑土木建设有限公司 | Automatic beam penetrating machine for beam field |
| CN114855637B (en) * | 2022-06-13 | 2022-11-22 | 中铁二十三局集团有限公司 | Bridge prestress construction system and post-tensioning construction method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201581644U (en) * | 2009-11-25 | 2010-09-15 | 王继成 | Bundle combing, knitting and lashing device for steel strand |
| CN102003073A (en) * | 2010-12-11 | 2011-04-06 | 中冶建工有限公司 | Constructing method for threading pre-stress structure steel strands |
| CN203361023U (en) * | 2013-07-26 | 2013-12-25 | 葛洲坝集团第一工程有限公司 | Binding and punching device for pre-stressed steel strand |
| CN103669214A (en) * | 2013-11-19 | 2014-03-26 | 中建三局建设工程股份有限公司 | Superlong prestress strand combing, binding and strand pulling integrated device |
| CN203808529U (en) * | 2014-04-29 | 2014-09-03 | 中国新兴建设开发总公司 | Net bag for bundle penetrating guidance of prestressed steel stranded wires |
| CN205636518U (en) * | 2016-03-10 | 2016-10-12 | 中铁六局集团有限公司 | Instrument is worn to restraint by prestress wire |
| CN205669319U (en) * | 2016-05-19 | 2016-11-02 | 中交三公局第二工程有限公司 | A kind of prestressing force penetrating device |
| CN207905366U (en) * | 2018-01-24 | 2018-09-25 | 中建八局第三建设有限公司 | Penetrating device for prestress wire lashing |
-
2018
- 2018-01-24 CN CN201810070299.6A patent/CN108149932B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201581644U (en) * | 2009-11-25 | 2010-09-15 | 王继成 | Bundle combing, knitting and lashing device for steel strand |
| CN102003073A (en) * | 2010-12-11 | 2011-04-06 | 中冶建工有限公司 | Constructing method for threading pre-stress structure steel strands |
| CN203361023U (en) * | 2013-07-26 | 2013-12-25 | 葛洲坝集团第一工程有限公司 | Binding and punching device for pre-stressed steel strand |
| CN103669214A (en) * | 2013-11-19 | 2014-03-26 | 中建三局建设工程股份有限公司 | Superlong prestress strand combing, binding and strand pulling integrated device |
| CN203808529U (en) * | 2014-04-29 | 2014-09-03 | 中国新兴建设开发总公司 | Net bag for bundle penetrating guidance of prestressed steel stranded wires |
| CN205636518U (en) * | 2016-03-10 | 2016-10-12 | 中铁六局集团有限公司 | Instrument is worn to restraint by prestress wire |
| CN205669319U (en) * | 2016-05-19 | 2016-11-02 | 中交三公局第二工程有限公司 | A kind of prestressing force penetrating device |
| CN207905366U (en) * | 2018-01-24 | 2018-09-25 | 中建八局第三建设有限公司 | Penetrating device for prestress wire lashing |
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| CN108149932A (en) | 2018-06-12 |
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