CN210916968U - Cast-in-place box girder supporting structure - Google Patents
Cast-in-place box girder supporting structure Download PDFInfo
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- CN210916968U CN210916968U CN201921430516.4U CN201921430516U CN210916968U CN 210916968 U CN210916968 U CN 210916968U CN 201921430516 U CN201921430516 U CN 201921430516U CN 210916968 U CN210916968 U CN 210916968U
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- support
- wall
- box girder
- girder
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 244000035744 Hura crepitans Species 0.000 claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 5
- 238000009415 formwork Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000003466 welding Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 150000001875 compounds Chemical group 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a cast-in-place box girder iron bearing structure, including the cushion cap, the top outer wall inner wall of cushion cap is equipped with the foundation ditch, and the foundation ditch inner wall has the steel column support through the bolt fastening, it has the concrete to fill between the inner wall of foundation ditch and steel column support, and the integrative welding of inner wall of steel column support has the horizontal connector of support, the top outer wall of steel column support has the knockout sand box through the bolt fastening, and the top outer wall of knockout sand box is equipped with support I-beam, the welding of the top outer wall middle part of support I-beam has the truss roof beam. The utility model discloses a sand box structure, I-beam support extrusion can realize arranging husky smoothly on the cooperation of platform form sand box, and the support nature is better after the frame that falls between I-beam support and the steel column support, and the support is connected box girder main part obturator weight dispersion to the walking beam in advance on, and the shaping template support is in the box girder junction, and the steel structure between I-beam and the walking beam constructs to be double entry bearing structure, through bilayer structure to middle part and edge symmetry bearing, reduces skew about the box girder.
Description
Technical Field
The utility model relates to a bridge technical field especially relates to a cast-in-place box girder supporting structure.
Background
The box girder is one of the middle girders in bridge engineering, the inner part of the box girder is hollow, and flanges are arranged on two sides of the upper part of the box girder and are similar to a box, so that the box girder is named. Single boxes, multiple boxes, etc. The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. The box girder prefabricated in the independent site can be erected after the lower project is finished by combining the bridge girder erection machine, so that the project progress can be accelerated, and the construction period can be saved; cast-in-place box girders are mostly used for large continuous bridges. At present, materials are commonly used, and two main types are available, namely a prestressed reinforced concrete box girder and a steel box girder. The prestressed reinforced concrete box girder is constructed on site, and transverse prestress is also arranged in some cases besides longitudinal prestress; the steel box girder is generally processed in a factory and then transported to a site for installation, and has an all-steel structure and a partially reinforced concrete pavement layer. The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. Generally used on bridges with large span. The appearance is like a box and is called a steel box girder.
In the prior art of box girders, a cast-in-place box girder support frame is usually subjected to a direct cutting method, materials are wasted by the direct cutting method, the synchronism of the support frame falling is difficult to realize, and the risk of overhead operation is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a cast-in-place box girder support structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a cast-in-situ box girder support structure comprises a bearing platform, wherein a foundation pit is arranged on the inner wall of the outer wall of the top of the bearing platform, and the inner wall of the foundation pit is fixed with a steel column bracket through bolts, concrete is filled between the foundation pit and the inner wall of the steel column bracket, and the inner wall of the steel column bracket is integrally welded with a bracket transverse connector, the outer wall of the top of the steel column bracket is fixed with a mold-dropping sand box through bolts, and the outer wall of the top of the mold-dropping sand box is provided with a support I-beam, the middle part of the outer wall of the top of the support I-beam is welded with a truss beam, and the edge of the outer wall of the top outer wall of the I-shaped beam of the bracket is welded with a Bailey beam, the outer walls of the top parts of the truss beam and the Bailey beam are welded with a walking beam, and the outer wall of the top of the walking beam is fixed with a template support through bolts, the outer wall of the top of the template support is fixed with box beam supporting plates through bolts, and a box beam filling body is arranged between the inner walls of the two box beam supporting plates.
Preferably, the middle part of the box girder filling body is provided with a shaped template, and the inner wall of the shaped template is fixed with an inner support frame through bolts.
Preferably, the inner walls of the two ends of the walking beam are fixedly provided with pre-supporting steel frames through bolts, the outer walls of the tops of the pre-supporting steel frames are connected with oppositely-pulling screw rods through threads, and the pre-supporting steel frames are in oppositely-pulling connection cooperation with the box beam supporting plate through the oppositely-pulling screw rods.
Preferably, the inner frame is arranged in the middle of the inner wall of the support I-shaped beam, and the flange supporting bodies are welded at the two ends of the support I-shaped beam.
Preferably, the inner wall of the flange supporting body is provided with an inclined strut framework, a mold frame is integrally connected at the joint of the mold-dropping sand box and the support I-beam, and the top end of the mold frame is connected with the inclined strut framework.
Preferably, a fixed beam is connected between the inner walls of the opposite sides of the truss beam and the Bailey beam, and the middle part of the inner wall of the fixed beam is provided with a split flange in a split manner.
Preferably, the drop mold sand box is of an inclined table-shaped structure, and honeycomb supporting plates are clamped on the inner wall of the drop mold sand box at equal intervals.
The utility model has the advantages that:
1. the bottom end of the cast-in-place box beam support structure adopts a sand box structure, the sand box structure is designed to be in a table shape, smooth sand discharge can be realized by matching with extrusion of the upper I-beam support, waste of materials by a cutting method is avoided, meanwhile, the support performance after the frame falling between the I-beam support and the steel column support is better, and the offset is smaller than that of the cutting method;
2. this cast-in-place box girder supporting structure divide into advance a support and shaping support, advance a support with the obturator weight dispersion of case roof beam main part to walking on the roof beam, fashioned template support is connected in the case roof beam junction, plays the effect of connecting the case roof beam body and template, and the steel structure between I-beam and the walking beam is compound bearing structure, through bilayer structure to middle part and edge symmetry bearing, reduces skew about the case roof beam.
To sum up, this case roof beam supporting structure adopts the sand box structure, and the sand box structure is the platform form, and the extrusion of going up the I-beam support in the cooperation can realize arranging husky smoothly, and the support nature is better after the frame that falls between I-beam support and the steel column support, and the pre-support disperses case roof beam main part obturator weight to walking beam on, and the shaping template support is connected in the case roof beam junction, and the steel structure between I-beam and the walking beam is compound bearing structure, through bilayer structure to middle part and edge symmetry bearing, reduces skew about the case roof beam.
Drawings
Fig. 1 is a schematic front view of a cast-in-place box girder support structure provided by the present invention;
fig. 2 is a schematic view of a pre-supporting structure of a cast-in-place box girder support structure provided by the present invention;
fig. 3 is the utility model provides a cast-in-place box girder supporting structure's support I-shaped beam section structure sketch map.
In the figure: the steel column formwork comprises a bearing platform 1, steel column supports 2, a mould dropping sand box 3, a support I-beam 4, a truss beam 5, a sheathed Bailey beam 6, a walking beam 7, a formwork support 8, a box beam supporting plate 9, a support transverse connector 10, a pre-supporting steel frame 11, a box beam filling body 12, a type 13 formwork, an inner support frame 14, an inner framework 15, a flange support body 16, an inclined strut framework 17 and a formwork frame 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a cast-in-place box girder support structure comprises a bearing platform 1, wherein a foundation pit is arranged on the inner wall of the outer wall of the top of the bearing platform 1, a steel column support 2 is fixed on the inner wall of the foundation pit through bolts, concrete is filled between the foundation pit and the inner wall of the steel column support 2, a support transverse connector 10 is welded on the inner wall of the steel column support 2, a drop mold sand box 3 is fixed on the outer wall of the top of the steel column support 2 through bolts, a support I-beam 4 is arranged on the outer wall of the top of the drop mold sand box 3, a truss beam 5 is welded in the middle of the outer wall of the top of the support I-beam 4, a bailey beam 6 is welded at the edge of the outer wall of the top of the support I-beam 4, a walking beam 7 is welded on the outer walls of the tops of the truss beam 5 and the bailey beam 6, a, and a box girder filler 12 is arranged between the inner walls of two box girder supporting plates 9, a mould plate 13 is arranged in the middle of the box girder filler 12, an inner support frame 14 is fixed on the inner wall of the mould plate 13 through bolts, a pre-support steel frame 11 is fixed on the inner walls of two ends of a walking beam 7 through bolts, the outer wall of the top part of the pre-support steel frame 11 is connected with a counter-pull screw through threads, the pre-support steel frame 11 and the box girder supporting plates 9 form counter-pull connection fit through the counter-pull screw, an inner framework 15 is arranged in the middle of the inner wall of the support I-beam 4, flange supporting bodies 16 are welded at two ends of the support I-beam 4, an inclined support framework 17 is arranged on the inner wall of the flange supporting body 16, a mould frame 18 is integrally connected at the joint of the drop mould sand box 3 and the support I-beam 4, the top end of the mould frame 18 is connected with the inclined support framework 17, a fixed girder is connected between the opposite, the mold-dropping sand box 3 is of an oblique-table-shaped structure, and honeycomb supporting plates are clamped on the inner wall of the mold-dropping sand box 3 at equal intervals.
The working principle is as follows: when the cast-in-place box girder support structure is laid, a steel column support 2 and a support transverse connecting body 10 are fixed on a bearing platform 1 on a foundation, a mold-dropping sand box 3 and a support I-shaped girder 4 are fixed through a sand box mold-dropping method, sand is discharged after pouring and forming to stabilize a mold frame 18 on a steel frame, a truss girder 5 and an outer sleeve Bailey girder 6 are welded on the support I-shaped girder 4, a walking girder 7 is arranged at the top end, a pre-supporting steel frame 11 is preset on the walking girder 7, a box girder supporting plate 9 is fixed on the pre-supporting steel frame 11, a box girder filling body 12 is poured at the same time, a template 13 is arranged in the middle, the pre-supporting steel frame 11 is taken out after forming, and a template support 8 is arranged.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A cast-in-place box girder support structure comprises a bearing platform (1) and is characterized in that a foundation pit is arranged on the inner wall of the outer wall of the top of the bearing platform (1), a steel column support (2) is fixed on the inner wall of the foundation pit through bolts, concrete is filled between the foundation pit and the inner wall of the steel column support (2), a support transverse connecting body (10) is welded on the inner wall of the steel column support (2) integrally, a mold dropping sand box (3) is fixed on the outer wall of the top of the steel column support (2) through bolts, a support I-beam (4) is arranged on the outer wall of the top of the mold dropping sand box (3), a truss girder (5) is welded in the middle of the outer wall of the top of the support I-beam (4), a Bailey beam (6) is welded on the edge of the outer wall of the top of the support I-beam (4), a walking beam (7) is welded on the outer walls of the top of the truss girder (5, the box girder supporting plates (9) are fixed on the outer wall of the top of the template support (8) through bolts, and a box girder filling body (12) is arranged between the inner walls of the two box girder supporting plates (9).
2. A cast-in-place box girder bracing structure according to claim 1, wherein a formwork (13) is provided in the middle of the box girder filling body (12), and an inner bracing frame (14) is fixed to the inner wall of the formwork (13) by bolts.
3. The cast-in-place box girder support structure according to claim 1, wherein the inner walls of the two ends of the walking beam (7) are fixed with pre-supporting steel frames (11) through bolts, the outer walls of the tops of the pre-supporting steel frames (11) are connected with counter-pulling screw rods through threads, and the pre-supporting steel frames (11) are in counter-pulling connection fit with the box girder supporting plates (9) through the counter-pulling screw rods.
4. A cast-in-place box girder support structure according to claim 1, characterized in that an inner frame (15) is provided at the middle of the inner wall of the support i-beam (4), and flange supports (16) are welded at both ends of the support i-beam (4).
5. The cast-in-place box girder support structure according to claim 4, wherein the inner wall of the flange support body (16) is provided with a diagonal bracing frame (17), a mold frame (18) is integrally connected to the joint of the drop mold box (3) and the support I-beam (4), and the top end of the mold frame (18) is connected with the diagonal bracing frame (17).
6. The cast-in-place box girder support structure according to claim 1, wherein a fixed girder is connected between the opposite inner walls of the truss girder (5) and the Bailey girder (6), and the middle part of the inner wall of the fixed girder is provided with a split flange.
7. A cast-in-place box girder bracing structure according to claim 1, wherein the drop mold flask (3) is a sloping platform-like structure, and honeycomb supporting plates are clamped on the inner wall of the drop mold flask (3) at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430516.4U CN210916968U (en) | 2019-08-30 | 2019-08-30 | Cast-in-place box girder supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430516.4U CN210916968U (en) | 2019-08-30 | 2019-08-30 | Cast-in-place box girder supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210916968U true CN210916968U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921430516.4U Expired - Fee Related CN210916968U (en) | 2019-08-30 | 2019-08-30 | Cast-in-place box girder supporting structure |
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| Country | Link |
|---|---|
| CN (1) | CN210916968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622487A (en) * | 2022-02-15 | 2022-06-14 | 中铁十五局集团有限公司 | Construction method of quick-release curve superposed beam flange plate formwork structure |
-
2019
- 2019-08-30 CN CN201921430516.4U patent/CN210916968U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622487A (en) * | 2022-02-15 | 2022-06-14 | 中铁十五局集团有限公司 | Construction method of quick-release curve superposed beam flange plate formwork structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |