CN219430532U - Cast-in-situ supporting structure of bridge concrete box girder - Google Patents
Cast-in-situ supporting structure of bridge concrete box girder Download PDFInfo
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- CN219430532U CN219430532U CN202223273295.9U CN202223273295U CN219430532U CN 219430532 U CN219430532 U CN 219430532U CN 202223273295 U CN202223273295 U CN 202223273295U CN 219430532 U CN219430532 U CN 219430532U
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Abstract
The utility model provides a cast-in-situ support structure for a bridge concrete box girder, which relates to the technical field of cast-in-situ support structures for bridge concrete box girders. According to the cast-in-situ support structure for the bridge concrete box girder, pre-pressing treatment of the foundation under the bridge is not needed, and construction cost and construction period are reduced.
Description
Technical Field
The utility model relates to the technical field of bridge concrete box girder cast-in-situ supporting structures, in particular to a bridge concrete box girder cast-in-situ supporting structure.
Background
Concrete cast-in-place construction of the beam body (mainly box beams) is a common situation in double-column bridge construction. The cast-in-situ formwork is provided with a bearing support, and a floor type support system such as a traditional scaffold, a full framing, a steel pipe column support and a combined support is usually adopted. The bracket type is generally applied to a field with a relatively flat pavement and has relatively high requirements on soil conditions of the field.
In order to ensure the pouring quality and accuracy of the beam slab, the foundation at the bottom of the bracket needs to be pre-pressed before concrete pouring so as to prevent the quality and safety problems caused by uneven settlement of the foundation. However, the traditional support has short plates when crossing the existing river, road and railway, and a large amount of foundation treatment work is needed for construction on a soft foundation road section, so that the construction temporary structure investment is increased, and further the problems of high cost, long construction period, complex working procedures and the like are caused. The traditional support form has higher requirements on the topography and geological conditions of a construction site, and particularly, the full framing form can occupy a large amount of space under a bridge, so that the normal use of the lower space is influenced, and meanwhile, the construction cost and the safety risk are increased.
Disclosure of Invention
The utility model aims to provide a cast-in-situ support structure for a bridge concrete box girder, which does not need to pre-press a foundation under the bridge, and reduces construction cost and construction period.
Embodiments of the present utility model are implemented as follows:
the embodiment of the application provides a cast-in-situ bearing structure of bridge concrete box girder, include with the fixed bracket support piece of bridge pier stud, bracket support piece installs and is equipped with the supporting beam, and the bailey frame is installed to the supporting beam, and scaffold support that is used for supporting the bridge deck template is installed to the upper end of bailey frame.
In some embodiments of the present utility model, the bracket support comprises a left support and a right support respectively provided on the bridge pier, a bracket connecting member penetrating through the bridge pier is provided between the left support and the right support, and the left support and the right support are fixedly connected by the bracket connecting member.
In some embodiments of the utility model, the left support and the right support are each hollow structures.
In some embodiments of the present utility model, the support beam comprises I-beams respectively positioned at two sides of the bridge pier column, the I-beams positioned at two sides of the bridge pier column are fixedly connected through beam connecting pieces, and the I-beams are fixedly connected with bracket supporting pieces.
In some embodiments of the utility model, a limiting buckle is arranged between the bailey frame and the supporting beam, and the bailey frame is fixedly connected with the supporting beam through the limiting buckle.
In some embodiments of the utility model, a connecting beam is arranged between the bailey frame and the scaffold, the bailey frame is fixedly connected with the connecting beam, and the connecting beam is fixedly connected with the scaffold.
In some embodiments of the utility model, the connecting beam is a channel steel with an upward opening, the scaffold is fixedly arranged in the opening of the channel steel, and the bailey frame is fixedly connected with the channel steel.
In some embodiments of the utility model, an expansion sheet is arranged between the channel steel and the scaffold, the channel steel is fixedly connected with the expansion sheet, and the expansion sheet is fixedly connected with the scaffold.
In some embodiments of the utility model, a fixing bolt is arranged between the channel steel and the expansion sheet, and the channel steel is fixedly connected with the expansion sheet through the fixing bolt.
In some embodiments of the utility model, the expansion flap is welded to the scaffold.
Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:
1. the pre-pressing treatment of the foundation under the bridge is not needed, and the construction cost and the construction period are reduced.
2. The occupation of the cast-in-situ supporting structure to the space under the bridge is reduced, so that the space under the bridge can be normally used.
Drawings
FIG. 1 is a schematic overall structural view of a cast-in-situ support structure for a concrete box girder of a bridge;
FIG. 2 is a schematic diagram of the structure of the bridge pier column, bracket support and support beam of the cast-in-situ support structure of the bridge concrete box girder of the utility model;
FIG. 3 is a schematic cross-sectional view of the left and right support members of a bridge concrete box girder cast-in-situ support structure of the present utility model;
FIG. 4 is a schematic diagram of a cross-sectional structure of a cast-in-situ support structure for a concrete box girder of a bridge, wherein the left support, the right support and the bridge pier are matched;
fig. 5 is a schematic structural view of a bailey truss of the bridge concrete box girder cast-in-situ supporting structure of the utility model;
fig. 6 is a schematic structural diagram of a support beam and bailey frame cooperation of a bridge concrete box girder cast-in-situ support structure of the utility model;
fig. 7 is a schematic structural diagram of the connection cross beam and scaffold support of the bridge concrete box girder cast-in-situ supporting structure of the utility model;
fig. 8 is a schematic structural view of the connection cross beam and expansion sheet matching of the bridge concrete box girder cast-in-situ supporting structure.
Icon: the bridge pier comprises a 1-bridge pier column, a 2-bracket supporting piece, a 201-left supporting piece, a 202-right supporting piece, a 203-bracket connecting piece, a 3-supporting beam, a 301-beam connecting piece, a 4-bailey frame, a 401-limiting buckle, a 5-connecting beam, a 501-expansion piece, a 502-welding trace, a 503-fixing bolt, a 6-scaffold frame and a 7-bridge deck template.
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 can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-8, the embodiment provides a cast-in-situ support structure for a bridge concrete box girder, which comprises a bracket support 2 fixed with a bridge pier 1, wherein the bracket support 2 is provided with a support beam 3, the support beam 3 is provided with a bailey frame 4, and the upper end of the bailey frame 4 is provided with a scaffold bracket 6 for supporting a bridge deck slab 7.
In the embodiment, the bracket support 2 is arranged on the bridge pier 1, so that the bracket support 2 can keep a bit of distance from the ground, the occupation of the cast-in-situ support structure on the space under the bridge is reduced, and the space under the bridge can be normally used; meanwhile, the bracket support piece 2 is not contacted with the ground, pre-pressing treatment on the foundation under the bridge is not needed, and construction cost and construction period are reduced.
The bracket support pieces 2 can be a plurality of, each bracket support piece 2 is correspondingly arranged on different bridge pier columns 1, the bracket support pieces 2 can be arranged at the same height, the same support cross beam 3 can be connected with the bracket support pieces 2 in a mounting manner, and the support cross beam 3 can be transmitted to the bracket support pieces 2 after being stressed, so that the structural strength of the cast-in-situ support structure is improved.
The bailey frame 4 can be made of high-strength steel into a lightweight standardized truss unit component, the bailey frame 4 can be in a modularized design, so that the bailey frame 4 can be conveniently assembled and disassembled during construction, the bailey frame 4 can be erected on the supporting beam 3, the bailey frame 4 and the supporting beam 3 are horizontally and vertically installed, meanwhile, the carrying capacity of the bailey frame 4 is high, the structural rigidity is high, the fatigue life is long, and the integral structural strength and the reliability of the cast-in-situ supporting structure are improved.
The scaffold bracket 6 for supporting the bridge deck template 7 is arranged at the upper end of the bailey frame 4, and the scaffold bracket 6 can also be a modularized structural member, so that the installation and the disassembly during construction are convenient; after the scaffold bracket 6 is installed, a box girder template system is erected at the top of the scaffold bracket 6, so that the later construction of the bridge is facilitated; the scaffold support 6 comprises a plurality of connecting struts in different directions, the connecting struts are more in number and can extend in different directions, so that the scaffold support 6 is convenient to install and connect with the box girder template system.
The box girder template system can comprise a girder external mold and a girder internal mold, wherein the girder external mold can be formed by splicing large-scale combined steel molds, and the girder internal mold is formed by splicing large-scale wood templates.
In some embodiments of the present disclosure, the bracket support 2 includes a left support 201 and a right support 202 respectively provided on the bridge pier 1, a bracket connection 203 penetrating through the bridge pier 1 is provided between the left support 201 and the right support 202, and the left support 201 and the right support 202 are fixedly connected through the bracket connection 203.
In the above embodiment, the left support 201 and the right support 202 are both provided on the bridge pier 1, and structural members such as the supporting beams 3 can be mounted on both sides of the bridge pier 1.
The bracket connecting piece 203 may include a connecting stud and a connecting nut, and after the connecting stud sequentially passes through the left supporting piece 201, the bridge pier 1 and the right supporting piece 202, the connecting nut is tightened again, so that the installation of the left supporting piece 201 and the right supporting piece 202 can be completed. The mounting mode is simple to operate, and compared with the welding connection, the bolt connection is convenient to detach, so that the recycling of the left supporting piece 201 and the right supporting piece 202 is realized.
In some implementations of this embodiment, the left support 201 and the right support 202 are each hollow structures.
In the above embodiment, the use of materials is reduced while ensuring structural strength, and the weight of the left and right supports 201 and 202 is also reduced, facilitating handling.
In some embodiments of the present disclosure, the supporting beam 3 includes i-beams respectively located at two sides of the bridge pier 1, and the i-beams located at two sides of the bridge pier 1 are fixedly connected to each other by the beam connecting member 301, and the i-beams are fixedly connected to the bracket supporting member 2.
In the above embodiments, the i-beam has good mechanical properties and is widely used in buildings or other metal structures. The two I-beams can be respectively arranged at the upper ends of the left supporting piece 201 and the right supporting piece 202, the bridge pier 1 is positioned between the two I-beams, the I-beams at the two sides of the bridge pier 1 are connected by adopting beam connectors 301 such as beam bolts, so that the I-beams are further prevented from falling off, and the safety of the cast-in-situ supporting structure is ensured.
In some embodiments of the present disclosure, a limiting buckle 401 is disposed between the bailey frame 4 and the supporting beam 3, and the bailey frame 4 and the supporting beam 3 are fixedly connected through the limiting buckle 401.
In the above embodiment, the cross section of the limiting buckle 401 may be in a shape of a Chinese character 'ji', the limiting buckle 401 is provided with a containing groove with a downward opening, the structural steel of the bailey frame 4 is located in the containing groove, and connecting wings are arranged on two sides of the containing groove and are connected with the supporting cross beam 3 through bolts. The bailey frame 4 and the supporting cross beam 3 are fixedly connected through the limiting buckle 401, so that the construction is simple, and the later disassembly and the reuse are convenient.
When in use, a flat site is selected on a construction site to carry out block assembly of the bailey frame 4, the scaffold frame 6 and the template system. The pre-assembled bailey frames 4 are hoisted to the supporting cross beam 3 by adopting a crane, the bailey frames 4 are arranged at equal intervals, and the bottoms of the two ends of the bailey frames 4 are connected with the supporting cross beam 3 through limiting buckles 401.
In some embodiments of the present embodiment, a connection beam 5 is provided between the bailey frame 4 and the scaffold frame 6, the bailey frame 4 is fixedly connected to the connection beam 5, and the connection beam 5 is fixedly connected to the scaffold frame 6.
In the above embodiment, the connection beam 5 may be provided at the upper end of the bailey frame 4, and the connection beam 5 is horizontally and vertically installed with the bailey frame 4. The connecting cross beams 5 can be a plurality of, the distance between the adjacent connecting cross beams 5 is equal to the distance between the adjacent stand columns of the scaffold support 6, at the moment, the scaffold support 6 is installed on the connecting cross beams 5, each stand column of the scaffold support 6 is convenient to install on the connecting cross beams 5, and the support reliability of the scaffold support 6 is guaranteed.
In some embodiments of the present embodiment, the connecting beam 5 is a channel with an upward opening, the scaffold stand 6 is fixedly mounted in the opening of the channel, and the bailey stand 4 is fixedly connected with the channel.
In the above embodiment, the channel steel is a long steel material with a groove-shaped cross section, and belongs to carbon structural steel for construction and machinery. The scaffold support 6 is installed in the opening of the channel steel, and the opening of the channel steel can reduce the sliding of the scaffold support 6 when being installed and used, so that the convenience and safety of construction are improved.
In some embodiments of the present embodiment, an expansion piece 501 is disposed between the channel steel and the scaffold 6, the channel steel is fixedly connected to the expansion piece 501, and the expansion piece 501 is fixedly connected to the scaffold 6.
In the above embodiment, the expansion piece 501 may be a flat plate-shaped gasket, and the expansion piece 501 is installed between the channel steel and the scaffold frame 6, so as to adjust the height of the scaffold frame 6 or to level the scaffold frame 6.
In some implementations of the present embodiment, a fixing bolt 503 is disposed between the channel and the expansion piece 501, and the channel and the expansion piece 501 are fixedly connected by the fixing bolt 503.
In the above embodiment, the fixing bolt 503 includes a fixing stud and a fixing nut, and the fixing stud passes through the channel steel and the expansion piece 501, and then the fixing nut is screwed to complete the installation. The fixing bolts 503 facilitate the installation and the disassembly between the channel steel and the expansion piece 501, and improve the processing efficiency.
In some implementations of the present example, the expansion piece 501 is welded to the scaffold 6.
In the above embodiment, the welding may be performed along the joint between the expansion piece 501 and the scaffold frame 6, and finally, the annular welding trace 502 may be formed.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. A cast-in-situ supporting structure of a bridge concrete box girder is characterized in that: the bracket support comprises a bracket support piece (2) fixed with a bridge pier column, wherein the bracket support piece (2) is provided with a support cross beam (3), the support cross beam (3) is provided with a bailey frame (4), and the upper end of the bailey frame (4) is provided with a scaffold bracket (6) for supporting a bridge deck slab;
a connecting beam (5) is arranged between the bailey frame (4) and the scaffold support (6), the bailey frame (4) is fixedly connected with the connecting beam (5), and the connecting beam (5) is fixedly connected with the scaffold support (6);
the connecting beam (5) is a channel steel with an upward opening, the scaffold support (6) is fixedly arranged in the opening of the channel steel, and the bailey frame (4) is fixedly connected with the channel steel.
2. The bridge concrete box girder cast-in-situ supporting structure according to claim 1, wherein: bracket support piece (2) are including locating left support piece (201) and right support piece (202) of bridge pier stud respectively, are equipped with bracket connecting piece (203) that run through in bridge pier stud between left support piece (201) and right support piece (202), and left support piece (201) and right support piece (202) pass through bracket connecting piece (203) fixed connection.
3. The bridge concrete box girder cast-in-situ supporting structure according to claim 2, wherein: the left supporting piece (201) and the right supporting piece (202) are hollow structures.
4. A bridge concrete box girder cast-in-place supporting structure according to claim 1 or 2, characterized in that: the supporting cross beam (3) comprises I-shaped steel beams which are respectively positioned at two sides of the bridge pier column, the I-shaped steel beams positioned at two sides of the bridge pier column are fixedly connected through a cross beam connecting piece (301), and the I-shaped steel beams are fixedly connected with the bracket supporting piece (2).
5. The bridge concrete box girder cast-in-situ supporting structure according to claim 1, wherein: a limiting buckle (401) is arranged between the bailey frame (4) and the supporting beam (3), and the bailey frame (4) is fixedly connected with the supporting beam (3) through the limiting buckle (401).
6. The bridge concrete box girder cast-in-situ supporting structure according to claim 1, wherein: an expansion piece (501) is arranged between the channel steel and the scaffold support (6), the channel steel is fixedly connected with the expansion piece (501), and the expansion piece (501) is fixedly connected with the scaffold support (6).
7. The bridge concrete box girder cast-in-situ supporting structure according to claim 6, wherein: and a fixing bolt (503) is arranged between the channel steel and the expansion piece (501), and the channel steel is fixedly connected with the expansion piece (501) through the fixing bolt (503).
8. The bridge concrete box girder cast-in-situ supporting structure according to claim 6, wherein: the expansion sheet (501) is welded with the scaffold support (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223273295.9U CN219430532U (en) | 2022-12-07 | 2022-12-07 | Cast-in-situ supporting structure of bridge concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223273295.9U CN219430532U (en) | 2022-12-07 | 2022-12-07 | Cast-in-situ supporting structure of bridge concrete box girder |
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| CN219430532U true CN219430532U (en) | 2023-07-28 |
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| CN202223273295.9U Active CN219430532U (en) | 2022-12-07 | 2022-12-07 | Cast-in-situ supporting structure of bridge concrete box girder |
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- 2022-12-07 CN CN202223273295.9U patent/CN219430532U/en active Active
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