CN220867988U - One-time pouring structure for cantilever type prestress bent cap - Google Patents
One-time pouring structure for cantilever type prestress bent cap Download PDFInfo
- Publication number
- CN220867988U CN220867988U CN202322433805.2U CN202322433805U CN220867988U CN 220867988 U CN220867988 U CN 220867988U CN 202322433805 U CN202322433805 U CN 202322433805U CN 220867988 U CN220867988 U CN 220867988U
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- China
- Prior art keywords
- anchor backing
- backing plate
- bent cap
- sleeve
- diameter
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- 238000010276 construction Methods 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229920001821 foam rubber Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The application discloses a one-time pouring structure for a cantilever type prestress bent cap, which comprises side templates, prestress pipelines, anchor backing plates and sleeves, wherein the anchor backing plates are in a horn shape, the side templates are provided with four grouting chambers which are sequentially connected end to end and are enclosed to form the grouting chambers, the prestress pipelines are arranged in the grouting chambers, the two ends of the prestress pipelines are respectively connected with one end with smaller diameter of the anchor backing plates, grouting holes are formed in one end with larger diameter of the anchor backing plates, the outer diameter of the sleeves is matched with one end with larger diameter of the anchor backing plates, connecting pieces matched with the anchor backing plates are arranged on the inner walls of one end of the sleeves, through holes matched with the grouting holes are formed in the connecting pieces, the connecting pieces are used for being connected with one end with larger diameter of the anchor backing plates and enabling the through holes to be aligned with the grouting holes, and the other ends of the sleeves, which are far away from the connecting pieces, extend to be close to the inner walls of the side templates, so that one-time pouring molding of the bent cap can be completed, and construction cost is saved; meanwhile, the construction difficulty and technical requirements are reduced, and the construction quality of the post-pouring notch is guaranteed.
Description
Technical Field
The application relates to the technical field of bridges, in particular to a one-time pouring structure for a cantilever type prestress bent cap.
Background
With the continuous development of urban construction, the traffic volume is continuously increased, the travel demands of citizens can be met by wider roads, however, the problem can be solved only by viaducts due to the influence of buildings, the existing municipal bridge engineering mainly adopts cantilever type prestress bent caps to build overhead bridges, on one hand, the space under the bridge can be fully utilized, the ground traffic capacity under the bridge is improved, on the other hand, the bridge deck can be ensured to provide enough traveling width,
The construction process steps of the cantilever type prestress bent cap comprise: setting up a platform, installing a cover beam bottom die, installing a steel reinforcement framework, installing a cover beam side die, casting concrete, maintaining, tensioning and sealing anchors, removing a bracket and a template, casting a tensioning notch and maintaining.
The pouring of stretch-draw notch and bent cap is pour for several times and is formed, and traditional pouring stretch-draw notch adopts bamboo plywood manual work bottom plate and curb plate, not only takes time and takes labor, and template is fixed and demolishs all difficultly in addition, leads to the pouring construction degree of difficulty of stretch-draw notch big, and technical requirement is higher, and the operation is inconvenient, and is difficult for guaranteeing post-cast notch construction quality.
Therefore, auxiliary equipment is needed to solve the problem that one-time pouring molding of the bent cap is guaranteed while stretching in stages.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the one-time pouring structure for the cantilever type prestress bent cap provided by the utility model comprises the following steps:
The utility model provides a once pour structure for cantilever type prestressing force bent cap, includes sideform board, prestressing force pipeline, anchor backing plate and sleeve, the anchor backing plate is tubaeform, the sideform board is equipped with four and end to end in proper order and encloses and close and form the slip casting room, prestressing force pipeline sets up in the slip casting room and its both ends are connected with the less one end of anchor backing plate diameter respectively, just the great one end of anchor backing plate diameter is equipped with the slip casting hole, telescopic external diameter with the great one end assorted of anchor backing plate diameter, telescopic one end inner wall be equipped with anchor backing plate assorted connecting piece, just be equipped with on the connecting piece with slip casting hole assorted through-hole, the connecting piece be used for with the great one end of anchor backing plate diameter is connected and makes the through-hole is aimed at the slip casting hole, the other end that the sleeve kept away from the connecting piece extends to be close to the sideform inner wall.
The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows: the connecting piece is a flange, one end of the anchor backing plate, which is larger in diameter, is provided with a threaded hole, the flange is provided with a preformed hole matched with the threaded hole, and a bolt penetrates through the preformed hole and is screwed on the threaded hole.
The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows: the preformed holes are arc-shaped holes which are distributed by taking the middle of the connecting piece as the center.
The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows: and a gap filler is filled between the sleeve and the anchor backing plate.
The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows: and a gap filler is filled between the sleeve and the side template.
The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows: the caulking agent is foam glue.
The utility model has the beneficial effects that: the one-time pouring structure for the cantilever type prestress bent cap can finish one-time pouring molding of the bent cap, avoids secondary pouring of prestress tensioning slots, does not need to secondarily set up brackets and support templates, is beneficial to saving construction period, reduces secondary investment of labor, template brackets and mechanical equipment, and saves construction cost; meanwhile, the construction difficulty and technical requirements are reduced, and the construction quality of the post-pouring notch is guaranteed.
Because the two ends of the capping beam are inclined planes, the length of the sleeve can penetrate through and extend out of the two side templates of the end head, and the sleeve extending out of the end head of the capping beam can be cut after pouring and maintenance of the capping beam are completed and all the side templates are removed.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
Fig. 1 is a schematic structural view of a one-time casting structure for a cantilever-type prestressed bent cap according to the present application;
FIG. 2 is a schematic view of a sleeve according to the present application;
FIG. 3 is a schematic view of the connection structure of the anchor pad according to the present application.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
In the description of the present utility model, plural means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and the above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless clearly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be connected directly or indirectly through an intermediary; the connecting device can be fixedly connected, detachably connected and integrally formed; may be a mechanical connection; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Referring to fig. 1-3, an embodiment of the present application is provided, the primary pouring structure for a cantilever type prestressed bent cap includes a sideform 10, a prestressed pipe 20, an anchor backing plate 30 and a sleeve 40, the anchor backing plate 30 is in a horn shape, the sideform 10 is provided with four through holes 501 which are connected end to end in sequence and enclose to form a grouting chamber, the prestressed pipe 20 is disposed in the grouting chamber, two ends of the prestressed pipe are respectively connected with one end with a smaller diameter of the anchor backing plate 30, one end with a larger diameter of the anchor backing plate 30 is provided with a grouting hole 301, an outer diameter of the sleeve 40 is matched with one end with a larger diameter of the anchor backing plate 30, an inner wall of one end of the sleeve 40 is provided with a connecting piece 50 matched with the anchor backing plate 30, the connecting piece 50 is used for connecting with one end with a larger diameter of the anchor backing plate 30 and aligning the through holes 501 with the grouting holes 301, and the other end of the sleeve 40 far from the connecting piece 50 extends to be close to the inner wall 10 of the sideform.
The sleeve 40 can be rolled by a steel plate with the thickness of 2mm, the length of the sleeve is equal to the distance from the anchor backing plate 30 to the concrete surface, the outer diameter of the sleeve is equal to the outer diameter of one end of the anchor backing plate 30 with the larger diameter, and the diameter width of the through hole 501 is not smaller than the outer diameter of the grouting pipe.
Specifically, the connecting piece 50 is a flange, a threaded hole 302 is formed at the larger end of the anchor backing plate 30, a preformed hole 502 matched with the threaded hole is formed on the flange, and a bolt passes through the preformed hole 502 and is screwed on the threaded hole 302.
The flange is cut from a 2mm thick steel plate with a diameter matching the outer diameter of the sleeve 40.
Preferably, the preformed hole 502 is an arc-shaped hole with the middle of the connecting piece 50 as the center, and a margin of 2-5mm can be reserved, so that the preformed hole 502 and the bolt hole can be aligned conveniently.
And a gap filler is filled between the sleeve 40 and the anchor backing plate 30, and a gap filler is filled between the sleeve 40 and the side template 10, wherein the gap filler can be foam rubber, so that slurry leakage is avoided.
The construction method for the one-time pouring structure of the cantilever type prestress bent cap in the embodiment comprises the following steps:
step 1, installing a capping beam bottom die, binding a reinforcing steel bar framework, installing a capping beam side template 10, installing a prestressed pipeline 20, enabling a reinforcing steel bar bundle to penetrate through the prestressed pipeline 20 and penetrate through the side templates 10 of two ends, and installing one end of an anchor backing plate 30 with a smaller diameter at the two ends of the prestressed pipeline 20;
Step 2, after the reinforcing steel bar tube bundle passes through the sleeve 40, respectively installing the sleeve 40 at one end with larger diameter of the anchor backing plate 30, aligning the through holes 501 on the sleeve 40 with the grouting holes 301, aligning the threaded holes 302 with the threaded holes, and screwing the reinforcing steel bar tube bundle into the threaded holes after passing through the threaded holes 302 through bolts;
step 3, adopting foam rubber to block the gap between the sleeve 40 and the anchor backing plate 30, and adopting foam rubber to block the gap between the sleeve 40 and the side template 10 of the end;
Step 4, pouring concrete into a pouring room and curing until the tensioning condition is reached, installing an anchor clamping piece and tensioning equipment to tension a reinforcing steel bar bundle, and installing a grouting pipe to grouting the prestressed pipeline 20;
Step 5, dismantling the side templates 10, thereby completing one-time casting molding of the bent cap, avoiding secondary casting of the prestress tensioning slot, avoiding the need of secondary erection of a bracket and a supporting template, being beneficial to saving the construction period, reducing the secondary investment of manpower, template brackets and mechanical equipment and saving the construction cost; meanwhile, the construction difficulty and technical requirements are reduced, and the construction quality of the post-pouring notch is guaranteed.
Because the two ends of the capping beam are inclined planes, the length of the sleeve 40 can penetrate through and extend out of the two side templates 10 of the end, and after pouring and maintenance of the capping beam are completed and all the side templates 10 are removed, the sleeve 40 extending out of the end of the capping beam can be cut off.
Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications and substitutions without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are included in the scope of the present utility model as defined in the appended claims.
Claims (6)
1. A one-time pouring structure for cantilever type prestressing force bent cap, its characterized in that includes sideform board (10), prestressing force pipeline (20), anchor backing plate (30) and sleeve (40), anchor backing plate (30) are loudspeaker shape, sideform board (10) are equipped with four and end to end in proper order and enclose and close and form the slip casting room, prestressing force pipeline (20) set up in the slip casting room and its both ends are connected with the less one end of anchor backing plate (30) diameter respectively, just the great one end of anchor backing plate (30) diameter is equipped with grouting hole (301), the external diameter of sleeve (40) with the great one end assorted of anchor backing plate (30), the one end inner wall of sleeve (40) be equipped with anchor backing plate (30) assorted connecting piece (50), just be equipped with on connecting piece (50) with grouting hole (301) assorted through-hole (501), connecting piece (50) be used for with the great one end of anchor backing plate (30) diameter is connected and makes grouting hole (501) are aligned with one end that anchor backing plate (30) diameter is great, sleeve (40) one end assorted with anchor backing plate (30) diameter is big one end assorted with anchor backing plate (50), one end is kept away from (301) is close to extension (50) inner wall (10).
2. The one-time casting structure for the cantilever type prestress bent cap according to claim 1, wherein the connecting piece (50) is a flange, a threaded hole (302) is formed in one end of the anchor pad (30) with a larger diameter, a preformed hole (502) matched with the threaded hole (302) is formed in the flange, and a bolt (60) penetrates through the preformed hole (502) and is screwed on the threaded hole (302).
3. The one-shot construction for a cantilever type prestressed bent cap according to claim 2, wherein the preformed holes (502) are arc holes distributed centering on the middle portion of the connection member (50).
4. The one-shot construction for a cantilever type prestressed bent cap according to claim 1, wherein a gap filler is filled between the sleeve (40) and the anchor pad (30).
5. The one-shot construction for a cantilever-type prestressed bent cap according to claim 1, wherein a gap filler is filled between the sleeve (40) and the sideform (10).
6. The one-shot construction for a cantilever type prestressed bent cap of claim 4 or 5, wherein said caulking agent is a foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322433805.2U CN220867988U (en) | 2023-09-07 | 2023-09-07 | One-time pouring structure for cantilever type prestress bent cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322433805.2U CN220867988U (en) | 2023-09-07 | 2023-09-07 | One-time pouring structure for cantilever type prestress bent cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220867988U true CN220867988U (en) | 2024-04-30 |
Family
ID=90816486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322433805.2U Active CN220867988U (en) | 2023-09-07 | 2023-09-07 | One-time pouring structure for cantilever type prestress bent cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220867988U (en) |
-
2023
- 2023-09-07 CN CN202322433805.2U patent/CN220867988U/en active Active
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