CN219586575U - Construction structure of segment prefabricated single-box single-chamber variable-height prestressed concrete box girder - Google Patents
Construction structure of segment prefabricated single-box single-chamber variable-height prestressed concrete box girder Download PDFInfo
- Publication number
- CN219586575U CN219586575U CN202320867485.9U CN202320867485U CN219586575U CN 219586575 U CN219586575 U CN 219586575U CN 202320867485 U CN202320867485 U CN 202320867485U CN 219586575 U CN219586575 U CN 219586575U
- Authority
- CN
- China
- Prior art keywords
- block
- zero
- prestressed concrete
- construction structure
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to a construction structure of a segment prefabricated single-box single-chamber variable-height prestressed concrete box girder, which comprises the following steps: step 1, installing an embedded part; step 2, installing a template of a zero block; step 3, pouring a zero block; step 4, mounting a support of the first block; step 5, installing a bridge girder erection machine; step 6, positioning the first block; step 7, pouring wet joints; step 8, installing the rest prefabricated sections: besides the zero block and the first block, the installation of the rest prefabricated sections adopts the mode of simultaneous suspension and sectional connection so as to finish construction. The utility model innovates the construction mode of the zero-number block template system, and avoids the erection of the bracket; the supporting platform is used for placing and installing the first block, so that the installation accuracy and efficiency of the first block are improved; the other prefabricated sections are suspended and connected simultaneously, so that the assembly efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of constructional engineering, in particular to a construction structure of a segment prefabricated single-box single-chamber variable-height prestressed concrete box girder.
Background
At present, a zero block of a segmental precast box girder is generally constructed by adopting a bracket method, when the bracket is erected, the construction bracket is required to be installed, the installation and the dismantling consume more materials and time, and the requirement on foundation conditions is high; except for the zero number block, the other prefabricated sections are usually constructed by adopting a bridge girder erection machine, wherein the connection of the one number block and the zero number block determines the shape of the whole bridge, which is a serious problem in the prefabrication and assembly of the whole bridge, the one number block is suspended in place by adopting the bridge girder erection machine, the position of the one number block is adjusted according to the shape of the bridge, then a wet joint between the zero number block and the one number block is poured, and the one number block is in a suspended state, so that the state adjustment difficulty is high, the operation is complicated, the construction speed is slow, and the bridge shape is difficult to control due to the inaccuracy of adjustment.
Therefore, a construction structure of a segment prefabricated single-box single-chamber heightened prestressed concrete box girder is needed to solve the problems existing in the prior art.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a construction structure of a segment prefabricated single-box single-chamber heightened prestressed concrete box girder.
In order to achieve the purpose of the application, the utility model adopts the following technical scheme: the construction structure of the segment prefabricated single-box single-chamber variable-height prestressed concrete box girder comprises the following components:
the pier top embedded parts are symmetrically arranged at the position, close to the pier top, of the bridge pier column;
the template of the zero block and the supporting system thereof are matched with the pier top embedded part and fixed on the bridge pier column and are used for pouring the zero block;
the pier top platform is connected with the pier top embedded part to serve as a supporting platform of the first block;
the bridge girder erection machine is arranged on a plurality of poured zero blocks through supporting legs and is used for hoisting one zero block;
the adjusting plate is temporarily connected with the zero block through connecting work steel and is used for placing and positioning the first block.
Further, the pier top embedded part comprises a first anchoring plate and a second anchoring plate, wherein the first anchoring plate and the second anchoring plate are respectively provided with a first sleeve and a second sleeve at intervals.
Further, connect the stull through the second telescopic connection, establish the installation second connecting block through connecting the stull cover, lay and connect the upper portion template system of zero number piece through the second connecting block, the second connecting block endotheca is established the installation stand, stand upwards extend to with the stupefied unified elevation of back, second connecting block top installation support template, utilize the stupefied fixed support template of back that the interval set up to adopt to draw the screw rod with both sides support template and stupefied counter-pull.
Further, the second connecting block is a square precast block arranged at intervals, a plurality of transverse and longitudinal connecting holes are formed in the second connecting block, connecting members are sleeved through the connecting holes, connecting holes are formed in the back edges, and the back edges are sleeved at the tops of the stand columns through the connecting holes when being installed, so that the back edges are fixed with the stand columns.
Further, the pier column is further provided with a hanging template arranged at the top of the pier column, the upper part of the hanging template is used for framing a zero block range to be poured, the lower part of the hanging template is ridden on the outer side of the protective concrete, and the lower panel of the hanging template is fixed with the first anchoring plate and the second anchoring plate through temporary fixing rods.
Further, the outer boundary of the pier stud is kept consistent with the boundary of the zero block through protective concrete so as to facilitate the riding of the suspension formwork.
Further, the first sleeve and the second sleeve are respectively connected with the first connecting block and the second connecting block, the second sleeve is also connected with horizontal connecting cross braces, vertical braces are arranged between the longitudinally adjacent connecting cross braces, and a plurality of connecting cross braces at the top are provided with supporting plates and adjusting plates.
Further, the connection cross brace of the bottom is connected with the first connection block through a plurality of diagonal braces.
Further, two sides of the supporting leg are respectively connected with a lower horizontal support, a vertical rod, a reinforcing rod and an upper horizontal support, and the supporting leg and the top of the upper horizontal support simultaneously support the bridge girder erection machine so as to improve the stability of the bridge girder erection machine.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the zero block template is installed through the pier stud reserved member, so that the complicated construction of the zero block by using the floor stand is avoided; the pier top zero-number block template supporting system is innovated, and the stability of the template is improved by utilizing multiple connecting blocks, upright posts, stabilizing rods and the like; the pier top zero block suspension template is innovated, the suspension template is integrally formed, and the adoption of diagonal braces and back ridges is reduced by utilizing a stable mode of riding on the pier top;
2. the pier top supporting system is used for placing the first block, so that the first block is prevented from being hung and positioned, the adjusting efficiency and positioning accuracy of the first block are improved, and the positioning accuracy of the first block is improved as the first block is the starting point of the prefabricated segment, so that the linear accuracy of the whole bridge is facilitated. In addition, the bottom gradient of the first block is adjusted by the adjusting plate so as to adjust the positioning posture of the heightened section;
3. according to the utility model, besides the zero block and the first block are constructed by adopting a supporting system, other prefabricated sections are simultaneously suspended and connected in a sectional manner, so that the prefabricated sections are simultaneously positioned and simultaneously spliced with the front section, and compared with the one-by-one splicing and connection of single sections, the splicing efficiency is improved.
Drawings
FIG. 1 is a transverse cross-sectional view of a prefabricated section beam bridge construction of the present utility model;
FIG. 2 is a transverse cross-sectional view of the pier column top support system of FIG. 1;
FIG. 3 shows a construction method I of a pier top zero block template system;
fig. 4 shows a second construction method of a pier top zero block template system.
In the figure, 1, pier stud; 2. a first anchor plate; 3. a first sleeve; 4. a first connection block; 5. a second anchor plate; 6. a second sleeve; 7. a second connection block; 8. diagonal bracing; 9. connecting a cross brace; 10. vertical support; 11. a support plate; 12. an adjusting plate; 13. pier top anchoring units; 14. zero block; 15. a first block; 16. a wet seam; 17. connecting work steel; 18. a lower back support; 19. a reinforcing rod; 20. a vertical rod; 21. an upper horizontal support; 22. a support leg; 23. a bridge girder erection machine; 24. a hanging rod; 25. prefabricating the segments; 26. a column; 27. a stabilizing rod; 28. supporting the template; 29. back edge; 30. a counter-pulling screw; 31. suspending the template; 32. protecting the concrete; 33. and (5) temporarily fixing the rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description 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 therefore the above terms should not be construed as limiting the utility model.
As shown in fig. 1-4, the prefabricated single-box single-chamber heightened prestressed concrete box girder construction structure of the section comprises:
the pier top embedded parts are symmetrically arranged at the position, close to the pier top, of the bridge pier column 1; the pier top embedded part comprises a first anchor plate 2 and a second anchor plate 5, wherein the first anchor plate 2 and the second anchor plate 5 are respectively provided with a first sleeve 3 and a second sleeve 6 at intervals.
The template of the zero block 14 and the supporting system thereof are matched with the pier top embedded part and fixed on the bridge pier column 1 for pouring the zero block 14;
the pier top platform is connected with the pier top embedded part to serve as a supporting platform of the first block 15;
the bridge girder erection machine 23 is arranged on the plurality of poured zero blocks 14 through the supporting legs 22 and is used for hoisting the first block 15;
the adjusting plate 12 is temporarily connected with the zero block 14 through a connecting work steel 17 and is used for placing and positioning the first block 15.
In this embodiment, the specific construction steps are as follows:
step 1, installing an embedded part:
when the bridge pier column 1 is poured, the first anchor plate 2 at the upper layer and the second anchor plate 5 at the lower layer are symmetrically installed at the position close to the pier top, the first sleeve 3 and the second sleeve 6 which are arranged at intervals are installed on the first anchor plate 2 and the second anchor plate 5 respectively, and the sleeves are used for connecting subsequent supporting units.
Step 2, installing a zero number block 14 template:
the installation of the zero block 14 template can take two methods:
the method comprises the following steps: the second sleeve 6 is utilized to connect the connection cross brace 9, the connection cross brace 9 is utilized to be sleeved with the second connection block 7, the second connection block 7 is utilized to be placed on and connected with an upper template system, the second connection block 7 is a square prefabricated block arranged at intervals, a plurality of transverse and longitudinal connecting holes are formed in the second connection block 7, a connecting member is sleeved through the connecting holes, the second connection block 7 is sleeved with the installation stand column 26, and the stand column 26 extends upwards to be unified with the back ridge 29.
The support templates 28 are arranged at the top of the second connecting block 7, the support templates 28 are fixed by the back ribs 29 arranged at intervals, the opposite-pull screws 30 are adopted to pull the support templates 28 at the two sides and the back ribs 29, connecting holes are formed in the back ribs 29, the back ribs 29 are sleeved at the tops of the stand columns 26 through the connecting holes when being arranged, the back ribs 29 are fixed with the stand columns 26, and the stability of the back ribs 29 is improved.
Simultaneously, the outer side of the back ridge 29 is connected with the extension section of the continuous transverse cross brace by the stabilizing rod 27, so that the stability of the template system is improved.
The second method is as follows: during construction of the pier column 1, protective concrete 32 with a certain thickness is poured outside the pier column 1. The door-shaped suspension formwork 31 is installed on the top of the pier column 1, the upper portion of the suspension formwork 31 is used for framing the range of the zero-number block 14 to be poured, the lower portion of the suspension formwork 31 straddles the outer side of the protective concrete 32, and the lower panel of the suspension formwork 31 is fixed with the first anchor plate 2 and the second anchor plate 5 by using the temporary fixing rods 33.
The protective concrete 32 keeps the outer boundary of the pier stud 1 consistent with the boundary of the zero block 14, so that the suspension formwork 31 rides.
Step 3, pouring a zero number block 14:
and pouring the zero-number block 14 concrete, and dismantling the template and a supporting system thereof after curing.
Step 4, mounting a support of a number one block 15:
the first sleeve 3 and the second sleeve 6 are used for respectively connecting the first connecting block 4 and the second connecting block 7, the second sleeve 6 is also connected with horizontal connecting cross braces 9, vertical braces 10 are arranged between the connecting cross braces 9 which are longitudinally adjacent, and a plurality of connecting cross braces 9 at the top are provided with supporting plates 11 and adjusting plates 12. At the same time, the connection cross-braces 9 at the bottom are connected with the first connection blocks 4 by a plurality of diagonal braces 8. The pier top platform is used as a support for the first block 15.
Step 5, installing a bridge girder erection machine 23:
the supporting legs 22 are arranged at the tops of the completed zero blocks 14, the bridge girder erection machine 23 is arranged by the supporting legs 22, the lower horizontal support 18, the vertical rods 20, the reinforcing rods 19 and the upper horizontal support 21 are respectively connected to two sides of the supporting legs 22, the bridge girder erection machine 23 is simultaneously supported at the tops of the supporting legs 22 and the upper horizontal support 21, and the stability of the bridge girder erection machine 23 is improved.
Step 6, one-size block 15 is in place:
the first block 15 is hoisted in place by using a bridge girder erection machine 23, the first block 15 is placed on the adjusting plate 12, the height of the adjusting plate 12 can be linearly adjusted, the first block 15 is precisely positioned by using the adjusting plate 12, and the first block 15 is temporarily connected with the zero block 14 by using a connecting work steel 17.
Step 7, pouring wet joints 16:
after the first block 15 is precisely positioned, the wet joint 16 between the zero block 14 and the first block 15 is poured, and then the support system of the first block 15 is removed. The zero block 14, the wet joint 16 and the one block 15 together form a pier top anchoring unit 13, and the pier top anchoring unit 13 uses a pier top support as a working platform.
Step 8, installing the rest prefabricated segments 25:
besides the zero block 14 and the first block 15, the rest prefabricated segments 25 are installed in a mode of simultaneous suspension and segmented connection, the hanging rods 24 are utilized to suspend the prefabricated segments 25 which are spanned in place respectively, the prefabricated segments 25 are connected with the previous segment respectively and are subjected to temporary prestress tensioning, for example, the blocks 2, 3 and 4 are connected with the first block 15 and are subjected to temporary prestress tensioning, the blocks 5, 6 and 7 are connected with the previous segment and are subjected to temporary prestress tensioning, and the prefabricated segments 25 are assembled and connected simultaneously, so that the assembling efficiency is improved.
The utility model is not described in detail in the prior art, and therefore, the utility model is not described in detail.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
Although specific terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
The present utility model is not limited to the above-mentioned preferred embodiments, and any person can obtain various other products without departing from the scope of the present utility model, but any changes in shape or structure of the present utility model are within the scope of the present utility model.
Claims (9)
1. The utility model provides a segmentation prefabricated single case single room becomes high prestressed concrete case roof beam construction structure which characterized in that includes:
the pier top embedded parts are symmetrically arranged at the position, close to the pier top, of the bridge pier column (1);
the template of the zero block (14) and the supporting system thereof are matched with the pier top embedded part and fixed on the bridge pier column (1) for pouring the zero block (14);
the pier top platform is connected with the pier top embedded part and used as a supporting platform of the first block (15);
the bridge girder erection machine (23) is arranged on a plurality of poured zero blocks (14) through supporting legs (22) and is used for hoisting the first block (15);
the adjusting plate (12) is temporarily connected with the zero block (14) through the connecting work steel (17) and is used for placing and positioning the first block (15).
2. The construction structure of the segment prefabricated single-box single-chamber heightened prestressed concrete box girder according to claim 1, wherein the pier top embedded part comprises a first anchor plate (2) and a second anchor plate (5), the first anchor plate (2) and the second anchor plate (5), and the first anchor plate (2) and the second anchor plate (5) are respectively provided with a first sleeve (3) and a second sleeve (6) at intervals.
3. The construction structure of the segmental prefabricated single-box single-chamber variable-height prestressed concrete box girder according to claim 2, characterized in that a connecting cross brace (9) is connected through a second sleeve (6), a second connecting block (7) is sleeved and installed through the connecting cross brace (9), an upper template system of a zero-number block (14) is placed and connected through the second connecting block (7), an installation upright post (26) is sleeved and installed in the second connecting block (7), the upright post (26) extends upwards to be at a unified elevation with a back ridge (29), a supporting template (28) is installed at the top of the second connecting block (7), the back ridge (29) is fixedly supported by the supporting templates (28) which are arranged at intervals, and opposite-pull screws (30) are adopted to pull the two side supporting templates (28) and the back ridge (29).
4. A prefabricated single-box single-chamber variable-height prestressed concrete box girder construction structure according to claim 3, characterized in that the second connecting block (7) is a square prefabricated block arranged at intervals, a plurality of transverse and longitudinal connecting holes are formed in the second connecting block (7), connecting members are sleeved through the connecting holes, connecting holes are formed in the back edges (29), and the back edges (29) are sleeved at the tops of the upright posts (26) through the connecting holes in the mounting process, so that the back edges (29) are fixed with the upright posts (26).
5. The construction structure of the segmental prefabricated single-box single-chamber heightened prestressed concrete box girder according to claim 2, further comprising a suspension formwork (31) arranged at the top of the pier column (1), wherein the upper part of the suspension formwork (31) is used for framing the range of zero-number blocks (14) to be poured, the lower part of the suspension formwork straddles the outer side of protective concrete (32), and the lower panel of the suspension formwork (31) is fixed with the first anchor plate (2) and the second anchor plate (5) through temporary fixing rods (33).
6. The segmental prefabricated single box single room heightened prestressed concrete box girder construction structure of claim 5, wherein the outer boundary of the pier column (1) is kept consistent with the boundary of the zero block (14) by the protective concrete (32) so as to facilitate riding of the suspension formwork (31).
7. The construction structure of the segmental prefabricated single-box single-chamber variable-height prestressed concrete box girder according to claim 4, wherein the first sleeve (3) and the second sleeve (6) are respectively connected with the first connecting block (4) and the second connecting block (7), the second sleeve (6) is also connected with horizontal connecting cross braces (9), vertical braces (10) are arranged between the longitudinally adjacent connecting cross braces (9), and a plurality of connecting cross braces (9) at the top are provided with supporting plates (11) and adjusting plates (12).
8. The construction structure of the segmental prefabricated single-box single-chamber heightened prestressed concrete box girder according to claim 7, wherein the connection cross brace (9) of the bottom is connected with the first connection block (4) through a plurality of diagonal braces (8).
9. The construction structure of the segmental prefabricated single-box single-chamber heightened prestressed concrete box girder according to any one of claims 1 to 8, wherein two sides of the supporting leg (22) are respectively connected with a lower horizontal support (18), a vertical rod (20), a reinforcing rod (19) and an upper horizontal support (21), and the supporting leg (22) and the top of the upper horizontal support (21) support a bridge girder erection machine (23) at the same time so as to improve the stability of the bridge girder erection machine (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320867485.9U CN219586575U (en) | 2023-04-12 | 2023-04-12 | Construction structure of segment prefabricated single-box single-chamber variable-height prestressed concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320867485.9U CN219586575U (en) | 2023-04-12 | 2023-04-12 | Construction structure of segment prefabricated single-box single-chamber variable-height prestressed concrete box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219586575U true CN219586575U (en) | 2023-08-25 |
Family
ID=87688110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320867485.9U Active CN219586575U (en) | 2023-04-12 | 2023-04-12 | Construction structure of segment prefabricated single-box single-chamber variable-height prestressed concrete box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219586575U (en) |
-
2023
- 2023-04-12 CN CN202320867485.9U patent/CN219586575U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180355600A1 (en) | Building structure and construction method for same | |
| CN108374319B (en) | Lower-bearing type tied-arch bridge structural unit, arch bridge structure and construction method thereof | |
| CN107663951A (en) | The support system and construction technology of superimposed sheet and wallboard formed by integrally casting | |
| CN110700105B (en) | Synchronous construction method for high pier column and tie beam and template used in same | |
| CN107476583A (en) | A kind of concrete assembled building builds construction method | |
| CN108625486A (en) | A kind of across frame structure edge support node structure of steel bar girder plate | |
| CN111206768B (en) | Light beam plate structure platform and construction method thereof | |
| JPH11181725A (en) | Method for constructing horizontal beam of main tower made of concrete | |
| CN114214917A (en) | Steel pipe concrete tied arch bridge and construction method | |
| CN219586575U (en) | Construction structure of segment prefabricated single-box single-chamber variable-height prestressed concrete box girder | |
| CN209924434U (en) | High-altitude overhanging formwork support frame body | |
| CN208363650U (en) | The mounting bracket of prefabricated components, the precast wall body containing the bracket | |
| JPH07310304A (en) | Erection method of concrete arch | |
| JPH0959932A (en) | Construction method of column head of overhanging erection girder bridge | |
| CN114382170B (en) | Construction method of upper prefabricated vertical component | |
| CN116219901A (en) | Segment prefabricated single-box single-chamber variable-height prestressed concrete box girder and construction method thereof | |
| CN115306136A (en) | Inclined wall eversion climbing type steel platform construction device and method | |
| KR20220156797A (en) | Descending 2-span mobile scaffolding and construction method | |
| CN111809851A (en) | Steel pipe triangular truss support system and construction method | |
| CN211007631U (en) | Cast-in-place full skeleton template system | |
| CN221031335U (en) | Climbing frame attached steel upright post of roof framework layer and climbing system | |
| CN217399896U (en) | Reinforced concrete beam column structure | |
| CN218990467U (en) | Connection node that secondary structure post was pour simultaneously with major structure | |
| CN219604164U (en) | Variable cross-section special-shaped steel tower crown mounting device | |
| CN218932884U (en) | Bearing support and system for bridge flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |