CN109591184A - The construction method of prefabricated components and device for implementing pretensioning method - Google Patents
The construction method of prefabricated components and device for implementing pretensioning method Download PDFInfo
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- CN109591184A CN109591184A CN201811508136.8A CN201811508136A CN109591184A CN 109591184 A CN109591184 A CN 109591184A CN 201811508136 A CN201811508136 A CN 201811508136A CN 109591184 A CN109591184 A CN 109591184A
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- reinforcing steel
- presstressed reinforcing
- hole
- anchor
- rotating beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The present invention provides a kind of for implementing the device of pretensioning method, it is characterised in that: described device is made of tensioning mechanism, 2 stands and multiple rotating beams；The present invention also provides a kind of construction methods of prefabricated components, it is characterised in that: the method includes: that the template of prefabricated components 1) is built on pedestal；2) stand is set on pedestal, rotating beam is set on stand (1)；3) multiple groups presstressed reinforcing steel, the corresponding rotating beam of every group of presstressed reinforcing steel are laid with；4) tension operation is carried out to multiple groups presstressed reinforcing steel using tensioning mechanism one by one；5) casting concrete into template forms prefabricated components after concrete setting, and the presstressed reinforcing steel between prefabricated components and rotating beam is cut.Using device and method of the present invention, the precision that prefabricated components presstressed reinforcing steel plays bending angle is improved, the stretching force all directions of presstressed reinforcing steel are uniform, and stretch-draw effect is good, while greatly reducing production cost.
Description
Technical field
The present invention relates to concrete component prefabricating technique field, the construction method of especially a kind of prefabricated components and for real
Apply the device of pretensioning method.
Background technique
In the prior art, in order to improve the cracking resistance of reinforced concrete member and avoid reinforced concrete member too early
There is crack, needs that stress is previously applied to improve component to presstressed reinforcing steel therein in concrete component prefabrication process
Can, it generallys use pretensioning method or post- tension is constructed.
Concrete component in the prior art as shown shown in Figure 1 and Figure 2 is shown using the structure that pretensioning method is constructed
It is intended to, fixed cross beam 101 is fixed on pedestal 102, and stretch-draw jack 103 and moved cross beam 104 are all placed on ground way 105
On tensioning is carried out to presstressed reinforcing steel 106, for playing the different presstressed reinforcing steel 106 of bending angle, need to make different gradients
The precision of ground way 105,106 bending angle of presstressed reinforcing steel guarantees by the precision of 105 gradient of ground way, and fixes cunning
Road 105 is often laid on welded steel structure, and the tilt angle of ground way 105 is it is difficult to ensure that precision, error is larger, so in advance
The bending angle error of stress rib 106 is larger, is be easy to cause in presstressed reinforcing steel and template 107 and template 107 in stretching process
Reinforcing bar interference, makes presstressed reinforcing steel 106 form broken line, and the stress of presstressed reinforcing steel 106 has some setbacks, and influences stretch-draw effect；On the other hand,
Since fixed cross beam 101 is fixed on pedestal 102, bending angle and the ground way 105 of tilt angle and presstressed reinforcing steel 106
Tilt angle all there is large error, cause anchoring backing plate 108 pressure on fixed cross beam 101 uneven, so as to cause same
The stretching force of 106 all directions of beam presstressed reinforcing steel is uneven, and the prestressing force for further resulting in the prefabricated components to complete is uneven；Together
When, structure is complicated for the ground way 105 of the prior art, poor universality, at high cost.
Summary of the invention
Aiming at the problem that background technique, the present invention provides a kind of construction method of prefabricated components and for implementing pretensioning method
Device, with solve in the prior art, concrete component using pretensioning method carry out it is prefabricated during presstressed reinforcing steel rise bent angle
Spend the problem of error is big, pre-stress rib stretching force is uneven, device structure is complicated, high production cost.
To achieve the purpose of the present invention, the present invention provides a kind of for implementing the device of pretensioning method, and innovative point exists
In: described device is made of tensioning mechanism, 2 stands and multiple rotating beams；The lower end of the stand is fixed, and 2 stands are flat
Row setting, the rotating beam are arranged between 2 stands, and the both ends of rotating beam are rotatablely connected with 2 stands respectively, rotation
The axial direction and horizontal direction parallel of crossbeam are provided with the first through hole of radial perforation rotating beam in the middle part of rotating beam；It is described
Tensioning mechanism is made of anchorage beam and 2 jack, and the outer end of jack and the medial surface of anchorage beam connect, anchorage beam
Middle part be provided with the second through-hole of radial perforation anchorage beam, the second through-hole is located between two jack；In use, making thousand
The inner end on jin top and the outside face contact of rotating beam, first through hole and the second through-hole are coaxial, set at the external port of first through hole
It is equipped with the first anchor, the second anchor is provided at the external port of the second through-hole, the outer end of presstressed reinforcing steel sequentially passes through
First through hole, the first anchor, the second through-hole and the second anchor.
Further, the anchor includes anchor plate and intermediate plate.
The present invention also provides a kind of construction methods of prefabricated components, described including the device for implementing pretensioning method
Device is made of tensioning mechanism, 2 stands and multiple rotating beams；The lower end of the stand is fixed, and 2 stands are arranged in parallel,
The rotating beam is arranged between 2 stands, and the both ends of rotating beam are rotatablely connected with 2 stands respectively, rotating beam
Axial direction and horizontal direction parallel are provided with the first through hole of radial perforation rotating beam in the middle part of rotating beam；The stretching machine
Structure is made of anchorage beam and 2 jack, and the outer end of jack and the medial surface of anchorage beam connect, the middle part of anchorage beam
It is provided with the second through-hole of radial perforation anchorage beam, the second through-hole is located between two jack；In use, making jack
The outside face contact of inner end and rotating beam, first through hole and the second through-hole are coaxial, and is provided at the external port of first through hole
One anchor is provided with the second anchor at the external port of the second through-hole, and it is logical that the outer end of presstressed reinforcing steel sequentially passes through first
Hole, the first anchor, the second through-hole and the second anchor；
It is characterized by: the method includes:
1) template of prefabricated components is built on pedestal, is provided in template and the matched through hole of presstressed reinforcing steel；
2) stand is set on pedestal, and stand is located at the outside of template, rotating beam is arranged in stand；
3) multiple groups presstressed reinforcing steel, the corresponding rotating beam of every group of presstressed reinforcing steel are laid with；Single group presstressed reinforcing steel is grasped
When making, the inner end of presstressed reinforcing steel is fixed, the outer end of presstressed reinforcing steel sequentially passes through the through hole and corresponding first through hole,
First anchor is set at the external port of one through-hole, and presstressed reinforcing steel is passed through from the first anchor；
4) tension operation is carried out to multiple groups presstressed reinforcing steel using tensioning mechanism one by one；Tensioning is carried out to single group presstressed reinforcing steel
When, first make the inner end of jack and the outside face contact of corresponding rotating beam, then allows the outer end of presstressed reinforcing steel to pass through second logical
The second anchor is arranged in hole at the external port of the second through-hole, and presstressed reinforcing steel is passed through from the second anchor, then will be pre-
Stress rib is manually tensioned, and then presstressed reinforcing steel is anchored on anchorage beam by the second anchor, then passes through jack
Presstressed reinforcing steel is tensioned, then presstressed reinforcing steel is anchored on rotating beam by the first anchor, then unloads jack
It carries, then removes tensioning mechanism, continue to carry out tensioning to remaining presstressed reinforcing steel in the manner aforesaid；
5) after multiple groups tension of prestressed tendon, the casting concrete into template forms prefabricated components after concrete setting,
Presstressed reinforcing steel between prefabricated components and rotating beam is cut, is then removed rotating beam spare.
The principle of the present invention is as follows:
Apparatus structure of the present invention for implementing pretensioning method is simple, can from apparatus structure of the present invention
To find out, presstressed reinforcing steel first passes through the first through hole of corresponding rotating beam, presstressed reinforcing steel after coming out from the through hole in template
Rise bending angle only it is related with position of the axle center of rotating beam in stand, rotating beam only passes through both ends and connect with stand
So that it is determined that the position in axle center, the shaft core position precision of rotating beam is relatively easy to control, and ground way more in the prior art more holds
Easily guarantee that presstressed reinforcing steel plays the precision of bending angle, effectively avoids the reinforcing bar in presstressed reinforcing steel and template and template from interfering, influence pre-
The stretch-draw effect of stress rib.
On the other hand, using being rotatablely connected, rotating beam can be in stand around itself for the both ends of rotating beam and stand
Axis rotation, when tensioning mechanism carries out tension operation to presstressed reinforcing steel, rotating beam can according to presstressed reinforcing steel it is axial into
Row rotation, keeps the axial direction of first through hole and the axial direction of presstressed reinforcing steel parallel always, when tensioning of the tensioning mechanism to presstressed reinforcing steel is full
After foot requires, then by the first anchor presstressed reinforcing steel is anchored on rotating beam, the anchor plate of the first anchor and
Presstressed reinforcing steel it is axially vertical, uniform to the fastening force all directions of presstressed reinforcing steel, the stretching force all directions of presstressed reinforcing steel are also uniform,
Stretch-draw effect greatly improves, and prestressing force is uniform inside the prefabricated components of production.
In the device of the invention, under the requirement of identical prestressing force, specification can be unified, right for rotating beam and tensioning mechanism
The identical presstressed reinforcing steel of stretching force size can be general, unlike in the prior art, the different presstressed reinforcing steels for playing bending angle needs
The ground way of different inclination angle is made to construct, material and cost of labor is greatly saved, so production cost is significantly
It reduces.
Using method of the invention, with below the utility model has the advantages that improving prefabricated components presstressed reinforcing steel plays bending angle
The stretching force all directions of precision, presstressed reinforcing steel are uniform, and stretch-draw effect is good, while greatly reducing production cost.
Detailed description of the invention
Detailed description of the invention of the invention is as follows.
Fig. 1 is in the prior art using the structural schematic diagram of pretensioning method construction；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is structural schematic diagram of the invention；
Fig. 4 is the top view of Fig. 3.
In figure: 1, stand；2, rotating beam；3, anchorage beam；4, jack；5, presstressed reinforcing steel；6, the first anchor；
7, the second anchor；8, pedestal；9, template；101, fixed cross beam；102, pedestal；103, jack；104, moved cross beam；
105, ground way；106, presstressed reinforcing steel；107, muscle and template；108, backing plate is anchored.
Specific embodiment
Below with reference to embodiment, the invention will be further described.
As shown in attached drawing 1 and attached drawing 2, the device of the present invention for implementing pretensioning method is stood by tensioning mechanism, 2
Frame 1 and multiple rotating beams 2 form；The lower end of the stand 1 is fixed, and 2 stands 1 are arranged in parallel, and the rotating beam 2 is arranged
Between 2 stands 1, the both ends of rotating beam 2 are rotatablely connected with 2 stands 1 respectively, in the present embodiment, the two of rotating beam 2
End is the axis small compared with middle part, and corresponding position offers 2 holes in two stands 1, the size in 2 holes with 2 liang of rotating beam
The axis at end matches, and rotating beam 2 is set in 2 holes of stand 1 by the axis at both ends, and rotating beam 2 can be in stand 1
It realizes the axis rotation around itself, before installation, lubricating grease can be applied in the hole of stand 1 and realizes the lubrication rotated to rotating beam 2.
In addition to the structure described in the present embodiment, the rotation connection of rotating beam 2 and stand 1 can also be using art technology in the prior art
Other technologies means that personnel can be known are realized.The axial direction and horizontal direction parallel of rotating beam 2, in rotating beam 2
Portion is provided with the first through hole of radial perforation rotating beam, and the size of first through hole is matched with the outer diameter of presstressed reinforcing steel；
The tensioning mechanism is made of anchorage beam 3 and 2 jack 4, and the outer end of jack 4 is interior with anchorage beam 3
Side connection, the middle part of anchorage beam 3 are provided with the second through-hole of radial perforation anchorage beam, and the second through-hole is very heavy positioned at two
Between top 4, the size of the second through-hole is matched with the outer diameter of presstressed reinforcing steel；
In use, making the inner end of jack 4 and the outside face contact of rotating beam 2, first through hole and the second through-hole are same
Axis, it is provided with the first anchor 6 at the external port of first through hole, is provided at the external port of the second through-hole, presstressed reinforcing steel 5
Outer end sequentially pass through first through hole, the first anchor 6, the second through-hole and the second anchor 7.In the present embodiment, anchoring
Device uses the structure type of anchor plate and intermediate plate, and the structure and usage mode of anchor are the prior art in the present embodiment
Middle conventional technology.
The present invention also provides a kind of construction methods of prefabricated components, including above-mentioned for implementing the device of pretensioning method,
The method includes:
1) template 9 of prefabricated components is built on pedestal 8, is provided in template 9 and the matched through hole of presstressed reinforcing steel 5；
2) stand 1 is set on pedestal 8, and stand 1 is located at the outside of template 9, and in the present embodiment, stand 1 is located at template 9
Rotating beam 2 is arranged in right side in stand 1；
3) multiple groups presstressed reinforcing steel 5, the corresponding rotating beam 2 of every group of presstressed reinforcing steel 5 are laid with；To single group presstressed reinforcing steel 5 into
When row operation, the inner end of presstressed reinforcing steel 5 is fixed, the outer end of presstressed reinforcing steel 5 sequentially passes through the through hole and corresponding first and leads to
Hole, is arranged the first anchor 6 at the external port of first through hole, and presstressed reinforcing steel 5 is passed through from the first anchor 6；
4) tension operation is carried out to multiple groups presstressed reinforcing steel 5 using tensioning mechanism one by one；Tensioning is carried out to single group presstressed reinforcing steel 5
When, first make the inner end of jack 4 and the outside face contact of corresponding rotating beam 2, the outer end of presstressed reinforcing steel 5 is then allowed to pass through second
The second anchor 7 is arranged in through-hole at the external port of the second through-hole, and presstressed reinforcing steel is passed through from the second anchor 7, then
Presstressed reinforcing steel 5 is manually tensioned, then presstressed reinforcing steel is anchored on anchorage beam 3 by the second anchor 7, is then passed through
Presstressed reinforcing steel 5 is tensioned by jack 4, then presstressed reinforcing steel 5 is anchored on rotating beam 2 by the first anchor 6, then
Jack 4 is unloaded, then removes tensioning mechanism, continues to carry out tensioning to remaining presstressed reinforcing steel 5 in the manner aforesaid；
5) after 5 tensioning of multiple groups presstressed reinforcing steel, the casting concrete into template 9 forms prefabricated structure after concrete setting
Part cuts the presstressed reinforcing steel 5 between prefabricated components and rotating beam 2, then removes rotating beam 2 spare.
Attached drawing 1 and attached shown in Fig. 2 is subject in the description of above-mentioned directionality, as rotating beam 2 outside, that is, figure in the right side
Side, the inner end of jack 4 i.e. its left end in figure, the outer end of jack 4 i.e. its right end in figure, anchorage beam 3 it is interior
Left side in side, that is, figure, the right side in outside, that is, figure of anchorage beam 3.
Claims (3)
1. a kind of for implementing the device of pretensioning method, it is characterised in that: described device is by tensioning mechanism, 2 stands (1) and more
A rotating beam (2) composition；The lower end of the stand (1) is fixed, and 2 stands (1) are arranged in parallel, and the rotating beam (2) sets
It sets between 2 stands (1), the both ends of rotating beam (2) are rotatablely connected with 2 stands (1) respectively, the axis of rotating beam (2)
To with horizontal direction parallel, the first through hole of radial perforation rotating beam is provided in the middle part of rotating beam (2)；The stretching machine
Structure is made of anchorage beam (3) and 2 jack (4), and the outer end of jack (4) is connect with the medial surface of anchorage beam (3), anchor
Gu the second through-hole of radial perforation anchorage beam is provided in the middle part of crossbeam (3), the second through-hole be located at two jack (4) it
Between；In use, making the inner end of jack (4) and the outside face contact of rotating beam (2), first through hole and the second through-hole are coaxial,
It is provided at the external port of first through hole the first anchor (6), is provided with the second anchor at the external port of the second through-hole
(7), the outer end of presstressed reinforcing steel (5) sequentially passes through first through hole, the first anchor (6), the second through-hole and the second anchor
(7)。
2. as described in claim 1 for implementing the device of pretensioning method, it is characterised in that: the anchor includes anchor pad
Plate and intermediate plate.
3. a kind of construction method of prefabricated components, including the device for implementing pretensioning method, described device is by tensioning mechanism, 2
A stand (1) and multiple rotating beams (2) composition；The lower end of the stand (1) is fixed, and 2 stands (1) are arranged in parallel, described
Rotating beam (2) is arranged between 2 stands (1), and the both ends of rotating beam (2) are rotatablely connected with 2 stands (1) respectively, turns
The axial direction and horizontal direction parallel of crossbeam (2) are moved, first that radial perforation rotating beam is provided in the middle part of rotating beam (2) is logical
Hole；The tensioning mechanism is made of anchorage beam (3) and 2 jack (4), outer end and anchorage beam (3) of jack (4)
Medial surface connects, and the second through-hole of radial perforation anchorage beam is provided in the middle part of anchorage beam (3), and the second through-hole is located at two
Between jack (4)；In use, make the inner end of jack (4) and the outside face contact of rotating beam (2), first through hole and the
Two through-holes are coaxial, are provided at the external port of first through hole the first anchor (6), and is provided at the external port of the second through-hole
Two anchors (7), the outer end of presstressed reinforcing steel (5) sequentially pass through first through hole, the first anchor (6), the second through-hole and
Two anchors (7)；
It is characterized by: the method includes:
1) template (9) of prefabricated components is built on pedestal (8), is provided in template (9) and presstressed reinforcing steel (5) is matched passes through
Hole；
2) stand (1) is set on pedestal (8), stand (1) is located at the outside of template (9), rotating beam is arranged on stand (1)
(2)；
3) multiple groups presstressed reinforcing steel (5) are laid with, the corresponding rotating beam (2) of every group of presstressed reinforcing steel (5)；To single group presstressed reinforcing steel
(5) when being operated, the inner end of presstressed reinforcing steel (5) is fixed, the outer end of presstressed reinforcing steel (5) sequentially passes through the through hole and phase
First through hole is answered, the first anchor (6) are set at the external port of first through hole, presstressed reinforcing steel (5) is from the first anchor
(6) it is passed through in；
4) tension operation is carried out to multiple groups presstressed reinforcing steel (5) using tensioning mechanism one by one；Tensioning is carried out to single group presstressed reinforcing steel (5)
When, first make the inner end of jack (4) and the outside face contact of corresponding rotating beam (2), the outer end of presstressed reinforcing steel (5) is then allowed to be worn
The second through-hole is crossed, the second anchor (7) are set at the external port of the second through-hole, presstressed reinforcing steel is from the second anchor (7)
In pass through, then by presstressed reinforcing steel (5) manually be tensioned, presstressed reinforcing steel is then anchored at by anchoring by the second anchor (7)
On crossbeam (3), then presstressed reinforcing steel (5) are tensioned by jack (4), then pass through the first anchor (6) for prestressing force
Muscle (5) is anchored on rotating beam (2), then by jack (4) unload, then tensioning mechanism is removed, in the manner aforesaid after
It is continuous that tensioning is carried out to remaining presstressed reinforcing steel (5)；
5) after multiple groups presstressed reinforcing steel (5) tensioning, to template (9) interior casting concrete, prefabricated structure is formed after concrete setting
Part cuts the presstressed reinforcing steel (5) between prefabricated components and rotating beam (2), then removes rotating beam (2) spare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508136.8A CN109591184A (en) | 2018-12-11 | 2018-12-11 | The construction method of prefabricated components and device for implementing pretensioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508136.8A CN109591184A (en) | 2018-12-11 | 2018-12-11 | The construction method of prefabricated components and device for implementing pretensioning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109591184A true CN109591184A (en) | 2019-04-09 |
Family
ID=65961652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811508136.8A Pending CN109591184A (en) | 2018-12-11 | 2018-12-11 | The construction method of prefabricated components and device for implementing pretensioning method |
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| CN (1) | CN109591184A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112936578A (en) * | 2021-01-26 | 2021-06-11 | 中建八局第一建设有限公司 | Precast beam system roof beam pedestal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279483A (en) * | 2008-05-29 | 2008-10-08 | 山东省公路建设（集团）有限公司 | Integral tension, relaxation system and technique for pre-tensioned prestressing tension technique |
| CN201304683Y (en) * | 2008-11-13 | 2009-09-09 | 中铁二局股份有限公司 | Casting beam pedestal device of pre-tension pre-stressed concrete beam |
| CN202865742U (en) * | 2012-09-26 | 2013-04-10 | 中交武汉港湾工程设计研究院有限公司 | Guy movable suspended scaffolding universal oblique inhaul cable connecting device |
| EP3312363A1 (en) * | 2016-10-18 | 2018-04-25 | Felix L. Sorkin | Lightweight jack |
-
2018
- 2018-12-11 CN CN201811508136.8A patent/CN109591184A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279483A (en) * | 2008-05-29 | 2008-10-08 | 山东省公路建设（集团）有限公司 | Integral tension, relaxation system and technique for pre-tensioned prestressing tension technique |
| CN201304683Y (en) * | 2008-11-13 | 2009-09-09 | 中铁二局股份有限公司 | Casting beam pedestal device of pre-tension pre-stressed concrete beam |
| CN202865742U (en) * | 2012-09-26 | 2013-04-10 | 中交武汉港湾工程设计研究院有限公司 | Guy movable suspended scaffolding universal oblique inhaul cable connecting device |
| EP3312363A1 (en) * | 2016-10-18 | 2018-04-25 | Felix L. Sorkin | Lightweight jack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112936578A (en) * | 2021-01-26 | 2021-06-11 | 中建八局第一建设有限公司 | Precast beam system roof beam pedestal |
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Application publication date: 20190409 |