CN114753253A - Prefabricated beam bridge wet joint mold flying device and construction method - Google Patents
Prefabricated beam bridge wet joint mold flying device and construction method Download PDFInfo
- Publication number
- CN114753253A CN114753253A CN202210219951.2A CN202210219951A CN114753253A CN 114753253 A CN114753253 A CN 114753253A CN 202210219951 A CN202210219951 A CN 202210219951A CN 114753253 A CN114753253 A CN 114753253A
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000009415 formwork Methods 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 206010013647 Drowning Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
Abstract
The invention discloses a prefabricated beam bridge wet joint formwork flying device which comprises a panel, wherein formwork longitudinal and transverse edges are arranged below the panel, the panel and the formwork longitudinal and transverse edges are anchored into a whole, a lifting rope is arranged above the formwork flying device, penetrates through the panel and is connected with the formwork longitudinal and transverse edges, a traction rope is arranged below the formwork flying device, one end of the traction rope is connected with the formwork longitudinal and transverse edges, and the other end of the traction rope is connected with a small weight. The invention also discloses a construction method of the wet joint of the precast beam bridge. According to the flying die construction method, all operators are on the bridge, no constructor exists under the bridge, so that the safety risk in construction is reduced, and meanwhile, the cost of the construction operators and construction ships under the bridge is reduced; according to the flying die construction method, when the template is dismantled during same-span wet joint construction, the template automatically falls off and flies to the bottom of the next wet joint, and the template does not need to be transferred, so that the work efficiency is improved; flying die lifting height can reach 3 ~ 6m, and the template mounting lifting distance is short during higher mound construction, and work efficiency is high.
Description
Technical Field
The invention relates to a bridge construction device and method, in particular to a prefabricated bridge wet joint formwork flying device and a construction method, and belongs to the technical field of prefabricated bridge wet joint construction.
Background
With the development of modern bridge construction technology, the technical superiority of bridge wet joint construction is more and more embodied. A common precast beam bridge wet joint adopts a suspended formwork construction method, operating personnel are required for installing and dismantling suspended formworks and transferring a bridge to the upper part and the lower part, and the method has the safety risks of high-altitude falling and object striking. When the prefabricated beam bridge is positioned on a high pier or on water, the working efficiency is low, the cost is high when a suspended formwork construction method is adopted, and the safety risk of drowning exists.
To avoid operating under the bridge, chinese utility model publication No. CN213836318U discloses a wet bridge deck joint formwork hanging structure, which comprises a formwork hanging bracket and a bottom formwork. The lifting steel bar connected to the bottom lifting die is lifted by adopting the lifting die support with four vertical supporting beams and the lifting motor, so that the bottom lifting die is lifted. The structure can avoid the operation of personnel under the bridge, but the hanging mould structure is complex, the installation cost is high, and the use is inconvenient.
Disclosure of Invention
The invention aims to provide a prefabricated beam bridge wet joint mould flying device and a construction method, which have the advantages of safe construction, simple method, high work efficiency, less investment and low cost.
The invention is realized in such a way that:
the utility model provides a wet seam of precast beam bridge flies mould device, includes the panel, and there is template vertical and horizontal stupefied panel below, and panel and template vertical and horizontal stupefied anchor become wholly, form the template, and it has the lifting rope to fly mould device top, and the lifting rope passes the panel and links to each other with template vertical and horizontal stupefied, and it has the haulage rope to fly mould device below, and haulage rope one end links to each other with template vertical and horizontal stupefied, and the haulage rope other end is connected with little heavy object.
The further scheme is as follows:
the weight of the template is not more than 30 kg.
The further scheme is as follows:
the panel is coated with a release paint.
The further scheme is as follows:
the width of the panel is 10-15 cm larger than the maximum seam width of the wet seam, and the splicing length of the template is smaller than or equal to the shortest length of the wet seam.
The further scheme is as follows:
the lifting rope is 2.
The further scheme is as follows:
the hauling rope is a fiber rope.
The further scheme is as follows:
the number of the hauling ropes is 2.
The further scheme is as follows:
the traction rope cannot break under the condition of 5 times of impact force;
wherein the impact force F ═ m × Δ v + m × g × t)/t in units of N, where m is the weight of the template in units of kg; Δ v is the difference in velocity in m/s, Δ v ═ vFinal (a Chinese character of 'gan')-vFirst stageIn general, v isFirst stage＝0m/s，vFinal (a Chinese character of 'gan')G × t; t is the fall time in s, t ═ g (2h ÷ g)∧0.5; g is the acceleration of gravity; h is the lower part of the pulling rope when the template is disassembledThe length is given in m.
The invention also provides a construction method of the wet joint of the precast beam bridge, which adopts the die flying device of the wet joint of the precast beam bridge provided by the invention and specifically comprises the following steps:
the flying die device is placed at the bottom of a beam from the outermost wet joint of the bridge for installation, and a long hook is used for hooking a traction rope to the bridge floor to firmly bind with the bridge embedded steel bars near the un-constructed wet joint; after the installation of the steel bars and the pouring of the concrete are finished at the outermost wet joint to reach the strength, the pad wedge and the support steel pipe are removed to enable the flying die device to fall and fly to the position below the adjacent wet joint; and lifting the template to the bottom of the bridge through the traction rope to carry out template installation, so repeatedly finishing the whole span wet joint construction, lifting the flying die to the bridge floor through the traction rope outside the boundary beam, and transferring to the next construction section.
The invention has the following outstanding technical effects:
firstly, all the operators are on the bridge, no constructor exists under the bridge, the safety risk in construction is reduced, and meanwhile, the cost of the construction operators and construction ships under the bridge is reduced; secondly, when the template is dismantled in the same-span wet joint construction process, the template automatically falls off and flies to the bottom of the next wet joint without transferring the template, so that the work efficiency is improved; and finally, the lifting height of the flying die can reach 3-6 m, the mounting lifting distance of the template is short when a higher pier is constructed, and the working efficiency is high.
Drawings
FIG. 1 is a diagram of a wet seam flying die apparatus according to one embodiment of the present invention;
FIG. 2 is a flying die mounting detail view of one embodiment of the present invention;
FIG. 3 is a schematic view of the installation of the flying die bridge of one embodiment of the present invention;
FIG. 4 is a schematic view of a hook flying die pull rope according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of concrete pouring construction performed after installation of flying forms and reinforcing steel bars according to an embodiment of the invention;
FIG. 6 is a schematic illustration of a process of dropping and flying adjacent wet joints after a flying die is removed in accordance with one embodiment of the present invention;
fig. 7 and 8 are schematic diagrams of flying die lifting and installation according to an embodiment of the invention;
FIG. 9 is a schematic view of a long hook flying die pull rope for an edge beam in accordance with one embodiment of the present invention;
fig. 10 is a schematic view of a towing rope of an unmanned aerial vehicle flying fishing die for a boundary beam according to an embodiment of the invention.
Wherein, 01-precast beam, 11-un-constructed wet joint, 12-beam body embedded steel bar, and 13-constructed wet joint; 02-a flying die device, 21-a panel, 22-longitudinal and transverse edges of a template, 23-a lifting rope, 24-a traction rope and 25-a counterweight; 31-supporting steel pipe, 32-pad wedge and 33-PVC sleeve; 41-long hook, 42-short hook, 43-unmanned aerial vehicle, 44-rope pocket and 45-long hook.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
Example one
The embodiment provides a prefabricated beam bridge wet joint mould flying device 02, as shown in attached figures 1 and 2, including panel 21, there is template vertical and horizontal stupefied 22 panel below, panel and template vertical and horizontal stupefied anchor become wholly, there is lifting rope 23 flying mould device top, the lifting rope passes the panel and links to each other with template vertical and horizontal stupefied, there is haulage rope 24 flying mould device below, haulage rope one end links to each other with template vertical and horizontal stupefied, the haulage rope other end is connected with little heavy object 25.
The single template of the flying die device can be carried by one person, and the weight of the template does not exceed 30 kg.
The panel is coated with the demoulding paint which can be used for a plurality of times by once smearing.
The width of the panel is 10-15 cm larger than the maximum seam width of the wet seam, and the splicing length of the template is smaller than or equal to the shortest length of the wet seam. And arranging small templates at hidden positions for filling up the wet joint part with insufficient length after the templates are spliced.
The hauling rope is a fiber rope.
The traction rope cannot break under the condition of 5 times of impact force;
wherein the impact force F ═ m × Δ v + m × g × t)/t in units of N, where m is the weight of the template in units of kg; delta vFor the speed difference, the unit is m/s, Δ v ═ vFinal (a Chinese character of 'gan')-vFirst stageIn general, v isFirst stage＝0m/s，vTerminalG × t; t is the fall time in s, t ═ g (2h ÷ g)∧0.5; g is the acceleration of gravity; h is the lowering length of the pulling rope when the template is detached, and the unit is m.
In order to ensure safety, the length of the traction rope is as short as possible on the premise that the length of the traction rope meets requirements of template flying lifting and the like.
Example two
The embodiment provides a wet joint construction method for a precast beam bridge, which comprises the following steps:
as shown in the attached drawing 3, the flying die device is placed at the bottom of a beam for installation before a first wet joint is not provided with steel bars, one person carries a traction rope 24 on a bridge, one person hooks the lifting rope 23 by a short hook 42 to place the flying die device 02 at the bottom of a precast beam 01, a supporting steel pipe 31 penetrates into the lifting rope 23 to temporarily hang the flying die device 02 on the precast beam 01, and then the traction rope 24 is placed at the bottom of the precast beam 01. The long hook 41 is used for tightly binding the rope 24 to be hauled on the bridge surface and the beam body embedded steel bar 12 according to the method shown in the attached figure 4.
Then, the fixed template is installed according to the method shown in the attached figure 2: the position of the template is adjusted to be in place, the template is positioned at the bottom of the supporting steel pipe 31 and exceeds the pad wedge 32, the flying die device 02 and the beam body 01 are firmly padded, the lifting rope 23 is isolated from the wet joint concrete through the PVC sleeve 33, and the flying die device is convenient to detach after the concrete is hardened.
FIG. 5 the wet joint reinforcing steel bars are installed to complete the concrete pouring.
After the wet joint concrete reaches a certain strength, the pad wedge 32 is broken off, and after the support steel pipe 31 is pulled out, the flying die device 02 is not supported and automatically falls under the action of gravity, and as shown in figure 6, the flying die device is limited by the traction rope 24 to fly to the position below the adjacent un-constructed wet joint 11. At this point, the treatment of a constructed wet joint 13 has been completed.
Lifting the formwork according to the attached figures 7 and 8, and constructing the residual wet joint with the same span according to the steps.
And in the last wet joint, the traction rope 24 is hooked to the bridge floor by using a long hook 45 according to the method shown in the attached figure 9 and is tightly tied with the embedded steel bar 12 of the beam body. According to the method shown in the attached figure 10, the unmanned aerial vehicle 43 carries the rope pocket 44 tied on the body, flies to the bridge deck around the traction rope 24, holds the traction rope in a pocket, and finally lifts the traction rope to the bridge deck through the rope pocket 44 to be tightly tied with the beam embedded steel bars 12. After all wet joints are completed, the flyforms are lifted out of the deck to the next section on the outside of the boundary beam in the manner shown in figure 7.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (9)
1. The utility model provides a wet seam of precast beam bridge flies mould device which characterized in that: the template is arranged below the panel in a longitudinal and transverse mode, the panel and the template are anchored into a whole in a longitudinal and transverse mode to form the template, a lifting rope is arranged above the mould flying device and penetrates through the panel to be connected with the template in a longitudinal and transverse mode, a traction rope is arranged below the mould flying device, one end of the traction rope is connected with the template in a longitudinal and transverse mode, and the other end of the traction rope is connected with a small heavy object.
2. The wet seam flying die device for precast beam bridges of claim 1, wherein:
the weight of the template is not more than 30 kg.
3. The wet seam flying die device for precast beam bridges of claim 1, wherein:
the panel is coated with a release paint.
4. The wet seam flying die device for the precast beam bridge according to claim 1, characterized in that:
the width of the panel is 10-15 cm larger than the maximum seam width of the wet seam, and the splicing length of the template is smaller than or equal to the shortest length of the wet seam.
5. The wet seam flying die device for precast beam bridges of claim 1, wherein:
the lifting rope is 2.
6. The wet seam flying die device for precast beam bridges of claim 1, wherein:
the hauling rope is a fiber rope.
7. The wet seam flying die device for precast beam bridges of claim 6, wherein:
the number of the traction ropes is 2.
8. The wet joint flying die device for precast beam bridges of claim 6 or 7, wherein:
the traction rope cannot break under the condition of 5 times of impact force;
wherein the impact force F ═ m × Δ v + m × g × t)/t in units of N, where m is the weight of the template in units of kg; Δ v is the difference in velocity in m/s, Δ v ═ vFinal (a Chinese character of 'gan')-vFirst stage,vFirst stage＝0m/s，vFinal (a Chinese character of 'gan')G × t; t is the fall time in units of s, t ═ 2 h/g ^ 0.5; g is the acceleration of gravity; h is the lowering length of the pulling rope when the template is detached, and the unit is m.
9. A precast beam bridge wet joint construction method is characterized in that the precast beam bridge wet joint flying die device of any claim from 1 to 8 is adopted, and the method specifically comprises the following steps:
the flying die device is placed at the bottom of a beam from the outermost wet joint of the bridge for installation, and a long hook is used for hooking a traction rope to the bridge floor to firmly bind with the bridge embedded steel bars near the un-constructed wet joint; after the installation of the steel bars and the pouring of the concrete are finished at the outermost wet joint to reach the strength, the pad wedge and the support steel pipe are removed to enable the flying die device to fall and fly to the position below the adjacent wet joint; and lifting the template to the bottom of the bridge through the traction rope to carry out template installation, so repeatedly finishing the whole span wet joint construction, lifting the flying die to the bridge floor through the traction rope outside the boundary beam, and transferring to the next construction section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210219951.2A CN114753253A (en) | 2022-03-08 | 2022-03-08 | Prefabricated beam bridge wet joint mold flying device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210219951.2A CN114753253A (en) | 2022-03-08 | 2022-03-08 | Prefabricated beam bridge wet joint mold flying device and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114753253A true CN114753253A (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210219951.2A Pending CN114753253A (en) | 2022-03-08 | 2022-03-08 | Prefabricated beam bridge wet joint mold flying device and construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220206A (en) * | 1999-02-03 | 2000-08-08 | Ando Corp | Joint structure of vertical precast concrete member |
| CN102900021A (en) * | 2012-09-28 | 2013-01-30 | 中铁四局集团第一工程有限公司 | Split mounting type bridge wet joint construction method |
| CN105525569A (en) * | 2014-10-22 | 2016-04-27 | 五冶集团上海有限公司 | Bridge flange plate wet joint suspended formwork construction method |
| CN110396932A (en) * | 2019-07-24 | 2019-11-01 | 中交一公局集团有限公司 | A kind of wet joint template peace of bridge jointing formula tears circulator and its construction method open |
| CN113481852A (en) * | 2021-06-16 | 2021-10-08 | 五冶集团上海有限公司 | Bridge wet joint formwork system capable of being continuously constructed |
-
2022
- 2022-03-08 CN CN202210219951.2A patent/CN114753253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220206A (en) * | 1999-02-03 | 2000-08-08 | Ando Corp | Joint structure of vertical precast concrete member |
| CN102900021A (en) * | 2012-09-28 | 2013-01-30 | 中铁四局集团第一工程有限公司 | Split mounting type bridge wet joint construction method |
| CN105525569A (en) * | 2014-10-22 | 2016-04-27 | 五冶集团上海有限公司 | Bridge flange plate wet joint suspended formwork construction method |
| CN110396932A (en) * | 2019-07-24 | 2019-11-01 | 中交一公局集团有限公司 | A kind of wet joint template peace of bridge jointing formula tears circulator and its construction method open |
| CN113481852A (en) * | 2021-06-16 | 2021-10-08 | 五冶集团上海有限公司 | Bridge wet joint formwork system capable of being continuously constructed |
Non-Patent Citations (1)
| Title |
|---|
| 车轲: "新型湿接缝"锚钓法"在桥梁中的应用", 《福建交通科技》, no. 2021, 20 May 2021 (2021-05-20), pages 73 - 76 * |
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