CN208279992U - The big box-beam structure of precast concrete of direction across bridge stem grafting method connection - Google Patents
The big box-beam structure of precast concrete of direction across bridge stem grafting method connection Download PDFInfo
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- CN208279992U CN208279992U CN201820637651.5U CN201820637651U CN208279992U CN 208279992 U CN208279992 U CN 208279992U CN 201820637651 U CN201820637651 U CN 201820637651U CN 208279992 U CN208279992 U CN 208279992U
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Abstract
The utility model discloses the big box-beam structures of precast concrete of direction across bridge stem grafting method connection, including construction pile foundation, cushion cap, column, construction bracket and foundation precast elements, cushion cap is mounted on the upper end of construction pile foundation, column is mounted on the upper end of cushion cap, construction bracket is mounted on the upper end of column, and foundation precast elements are placed on the upper end of construction bracket, are provided with steel reinforcement cage in foundation precast elements, foundation precast elements are equipped with several precast sections, are connected between each precast section by fastener.The utility model has the beneficial effects that the utility model builds the big box beam of concrete using the method for precast assembly, compare cast-in-place structural, reduce the live duration, the influence of Construction on Environment is reduced, component on site construction method is flexible, facilitates the equipment of transfer to carry out lifting construction using crawler crane etc., multiple spot construction may be implemented, big box beam stem grafting method precast assembly can be achieved, working procedure is less, and big box beam landscape effect is preferable.
Description
Technical field
The utility model relates to prefabricated bridge construction technique field more particularly to direction across bridge stem grafting method connect it is prefabricated
The big box-beam structure of concrete.
Background technique
The big box beam of common precast concrete in bridge structure at present generally uses beam sections mode, specifically comprises the processes of:
Along bridge to direction, bridge is divided into segment, utilizes Bridge Erector, after beam sections lifting in place, prestressing force inside tensioning, by full-bridge
It is connected as an entirety.
But the big box beam of concrete is formed using above method on-site consolidation beam sections, scene needs to put into Bridge Erector and sets
Standby, bridge formation machine equipment is mobile inconvenient, can only complete to move forward to next bridge beam bridge position after a hole bridge is assembled, under development
The assembly of one hole beam sections.If encountering construction condition limitation, partial hole bridge duration needs are delayed, it will to bridge knot
The control of structure construction period, construction cost control bring huge trouble.
Small Precast Box girder construction can be realized point beam prefabricated, and direction across bridge is wet again for construction site connects in succession, is able to use portable
Mobile pedrail crane is set up, but small box girder structure bottom beam appearance curve is more, and landscape effect is poorer than big box beam, is discontented with foot
The landscape requirement in door area.
Those skilled in the art are dedicated to solving above-mentioned technological deficiency.
Utility model content
In view of the above drawbacks of the prior art, the technical purpose of the utility model is the pre- of direction across bridge stem grafting method connection
The big box-beam structure of concrete processed can be easy to use the prefabricated big box-beam structure of the pedrail crane erection construction of portable mobile.
To realize the above-mentioned technical purpose, the utility model provides the big box beam of precast concrete of direction across bridge stem grafting method connection
Structure, including construction pile foundation, cushion cap, column, construction bracket and foundation precast elements, the cushion cap are mounted on the upper of construction pile foundation
End, the column are mounted on the upper end of cushion cap, and the construction bracket is mounted on the upper end of column, and the foundation precast elements are placed
Steel reinforcement cage is provided in the upper end of construction bracket, the foundation precast elements, the foundation precast elements are provided with several
Precast section passes through fastener between each precast section and connects.
Preferably, the shear connector that stem grafting seam is provided between two neighboring precast section and is cooperatively connected with stem grafting seam.
Preferably, the steel reinforcement cage includes bridge along bridge to the connection between steel bar stress, stirrup and each precast section
Reinforcing bar.
Preferably, each precast section is assemblied to form by web, bottom plate and top plate.
Preferably, the foundation precast elements include 4 precast sections or 5 precast sections.
Preferably, the construction pile foundation is provided with several piles.
Preferably, case hole is formed between two neighboring precast section.
Preferably, the fastener is finish rolling deformed bar or high-strength bolt.
The utility model has the beneficial effects that
The utility model builds the big box beam of concrete using the method for precast assembly, and compare cast-in-place structural, reduces
The live duration reduces the influence of Construction on Environment.Beam sections mode precast assembly is used compared to larger box beam, it is existing in this case
Field construction method is flexible, facilitates the equipment of transfer to carry out lifting construction using crawler crane etc., multiple spot construction may be implemented.It compares
Compared with small box girder using laterally wet seam arrangements precast assembly, it can be achieved that big box beam stem grafting method precast assembly, working procedure in this case
It is less, and big box beam landscape effect is preferable.
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the substructure construction block diagram of the utility model；
Fig. 3 is the foundation precast elements structure chart of the utility model；
Fig. 4 is the another embodiment structure chart of the utility model；
Fig. 5 is the foundation precast elements structure chart of the another embodiment of the utility model.
Specific embodiment
Such as Fig. 1 is simultaneously combined shown in Fig. 2 to Fig. 5, the big box-beam structure of precast concrete of direction across bridge stem grafting method connection, including is applied
Work pile foundation 1, cushion cap 2, column 3, construction bracket 4 and foundation precast elements 5, the cushion cap 2 are mounted on the upper end of construction pile foundation 1,
The column 3 is mounted on the upper end of cushion cap 2, and the construction bracket 4 is mounted on the upper end of column 3, and the foundation precast elements 4 are put
It sets and is provided with steel reinforcement cage in the upper end of construction bracket 4, the foundation precast elements 5, if the foundation precast elements 5 are provided with
A precast section 6 is done, is connected between each precast section 6 by fastener 7.
Further, the shear connector that stem grafting seam 9 is provided between two neighboring precast section 6 and is cooperatively connected with stem grafting seam 9
10, the steel reinforcement cage includes bridge along bridge to the connection reinforcing bar between steel bar stress, stirrup and each precast section.
Wherein, each precast section 6 is assemblied to form by web, bottom plate and top plate, and the foundation precast elements 5 include
There are 4 precast sections 6 or 5 precast sections 6.
In addition, the construction pile foundation 1 is provided with several piles, case hole 8, institute are formed between two neighboring precast section 6
Stating fastener 7 is finish rolling deformed bar or high-strength bolt.
The utility model builds the big box beam of concrete using the method for precast assembly, and compare cast-in-place structural, reduces
The live duration reduces the influence of Construction on Environment.Beam sections mode precast assembly is used compared to larger box beam, it is existing in this case
Field construction method is flexible, facilitates the equipment of transfer to carry out lifting construction using crawler crane etc., multiple spot construction may be implemented.It compares
Compared with small box girder using laterally wet seam arrangements precast assembly, it can be achieved that big box beam stem grafting method precast assembly, working procedure in this case
It is less, and big box beam landscape effect is preferable.
Foundation precast elements are formed using the web and roof and floor of the big box beam of concrete, big box beam segmentation position can be in abdomen
Plate part disconnects, and steel reinforcement cage or deformed bar are arranged according to force request in foundation precast elements, is not provided with wet joint, in advance
Carry out connection using shearing is strong between basic component processed.At the scene in assembling construction, it is existing that foundation precast elements are transported into construction
, epoxy adhesive is smeared on joint face, piecemeal is set up onto bridge pier, and tensioning transverse prestress forms precompressed on joint face
Box beam is connected as an entirety by power；Fining twisted steel prestressing force is set on connection web or pre-tightens high-strength bolt and is increased
The precompression of web；Localized contact is set on floorings bottom plate and amplifies face, as prefabricated case beam Mosaic face, is answered in advance using lateral
Power, fining twisted steel prestressing force, pretension bolt apply prestressing force on the contact surface, improve contact surface precompression and frictional force.
Example 1
As shown in Figure 1-Figure 3, this example proposes the concrete that contact surface and the strong connection of shearing are arranged on web
The big box beam of soil, illustrates the basic construction procedure of the case.
Box beam is divided into 4 foundation precast elements in this example.Reasonable disposition can be passed through by foundation precast elements
Prestressed, reinforced reinforcing bar bears lifting operating condition and sets up operating condition load.Contact surface is set at web and shearing is strong.Prefabricated base
Be transverse prestress, finish rolling deformed bar and high-strength bolt reserving hole in plinth component, foundation precast elements in precast plant or
Complete prefabricated in person construction site.
In work progress, the construction of related pile foundation, cushion cap bridge pier is completed first, and sets up temporary construction bracket；It will be prefabricated
Basic component is transported to construction site, is erected on correct position using hanging device by foundation precast elements are orderly；Box beam
Direction across bridge wears deformed bar, finish rolling deformed bar and high-strength bolt, stretch-draw prestressing force and finish rolling deformed bar, pre-tightens high
Strength bolt；Form removal and falsework；Complete main beam supporting.
Example 2
As illustrated in figures 4-5, this example proposes the concrete that contact surface and the strong connection of shearing are arranged on roof and floor
The big box beam of soil, construction method are similar with example 1.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (8)
1. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection, it is characterised in that: including construction pile foundation, cushion cap, stand
Column, construction bracket and foundation precast elements, the cushion cap are mounted on the upper end of construction pile foundation, and the column is mounted on the upper of cushion cap
End, the construction bracket are mounted on the upper end of column, and the foundation precast elements are placed on the upper end of construction bracket, described prefabricated
It is provided with steel reinforcement cage in basic component, the foundation precast elements are provided with several precast sections, between each precast section
It is connected by fastener.
2. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection as described in claim 1, it is characterised in that: adjacent
The shear connector for being provided with stem grafting seam between two precast sections and being cooperatively connected with stem grafting seam.
3. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection as described in claim 1, it is characterised in that: described
Steel reinforcement cage includes bridge along bridge to the connection reinforcing bar between steel bar stress, stirrup and each precast section.
4. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection as described in claim 1, it is characterised in that: each
The precast section is assemblied to form by web, bottom plate and top plate.
5. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection as described in claim 1, it is characterised in that: described
Foundation precast elements include 4 precast sections or 5 precast sections.
6. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection as described in claim 1, it is characterised in that: described
Construction pile foundation is provided with several piles.
7. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection as described in claim 1, it is characterised in that: adjacent
Case hole is formed between two precast sections.
8. the big box-beam structure of precast concrete of direction across bridge stem grafting method connection as described in claim 1, it is characterised in that: described
Fastener is finish rolling deformed bar or high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820637651.5U CN208279992U (en) | 2018-04-28 | 2018-04-28 | The big box-beam structure of precast concrete of direction across bridge stem grafting method connection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820637651.5U CN208279992U (en) | 2018-04-28 | 2018-04-28 | The big box-beam structure of precast concrete of direction across bridge stem grafting method connection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930497A (en) * | 2019-04-11 | 2019-06-25 | 中交二公局第五工程有限公司 | Mould bases cantilever combined system cross-line construction workpiece and construction technology |
| CN112112053A (en) * | 2020-08-26 | 2020-12-22 | 绍兴文理学院 | Prefabricated bent cap transverse connection system for assembled beam bridge and construction method of prefabricated bent cap transverse connection system |
| CN114319066A (en) * | 2021-12-01 | 2022-04-12 | 中国建筑土木建设有限公司 | Spliced steel truss box girder and mounting method thereof |
-
2018
- 2018-04-28 CN CN201820637651.5U patent/CN208279992U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930497A (en) * | 2019-04-11 | 2019-06-25 | 中交二公局第五工程有限公司 | Mould bases cantilever combined system cross-line construction workpiece and construction technology |
| CN109930497B (en) * | 2019-04-11 | 2024-03-22 | 中交二公局第五工程有限公司 | Workpiece for line crossing construction of formwork suspension casting combined system and construction process |
| CN112112053A (en) * | 2020-08-26 | 2020-12-22 | 绍兴文理学院 | Prefabricated bent cap transverse connection system for assembled beam bridge and construction method of prefabricated bent cap transverse connection system |
| CN114319066A (en) * | 2021-12-01 | 2022-04-12 | 中国建筑土木建设有限公司 | Spliced steel truss box girder and mounting method thereof |
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