CN202519575U - Box girder structure with cantilever supporting plates - Google Patents
Box girder structure with cantilever supporting plates Download PDFInfo
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- CN202519575U CN202519575U CN2012200567437U CN201220056743U CN202519575U CN 202519575 U CN202519575 U CN 202519575U CN 2012200567437 U CN2012200567437 U CN 2012200567437U CN 201220056743 U CN201220056743 U CN 201220056743U CN 202519575 U CN202519575 U CN 202519575U
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- fagging
- cantilever
- box
- top board
- beam structure
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Abstract
The utility model discloses a box girder structure with cantilever supporting plates. The box girder structure comprises a top plate, a bottom plate arranged below the top plate, and left and right lateral webs arranged between the top plate and the bottom plate; a closed box body is enclosed by the top plate, the bottom plate and the left and right lateral webs; a cantilever plate is arranged on each of two sides of the top plate, and the cantilever plates are connected with the top plate to form a bridge deck; and the cantilever plates are connected with the lateral webs through supporting plates. Through the structure, the weight of the upper structure can be effectively reduced, the weight of the lower part is correspondingly reduced, occupation of land and space is reduced, and effects of saving materials and reducing engineering cost are achieved.
Description
Technical field
The utility model relates to the technical field of civil engineering bridge design, relates in particular to a kind of box-beam structure with the cantilever fagging.
Background technology
In the design of highway and urban road bridge, the superstructure form often adopts box-beam structure, and current application is wider mainly contains straight web box girder, oblique web box girder, the minority practical applications fish-bellied type case beam, the only a few practical applications strut cantilever case beam.
Conventional straight web box girder or oblique web box girder, it is big to have the cross section torsional rigidity, and structure all has good stable property in construction and use; Can well adapted arrange communal facilitys such as pipeline; Be suitable for building various beam bridges such as Zhi Qiao, skew bridge, curved bridge, special-shaped beam bridge, have advantages such as big compliance, be used widely in the different types of rridges in modern times.Yet under stress performance, construction technology, appearance forrns comprehensive constraint, the box section jib-length of this kind case beam generally can only be accomplished 1～3m, and dead load is bigger than normal relatively, and the structure space occupation rate is higher.
A kind of new beam type of fish belly case beam for occurring in the bridge construction in recent years.Integral rigidity is big, stress performance is its advantage well.Opinions vary on landscape effect for its closed mellow and full section form, pass different judgements on, and this kind beam type exists on the material use economically inadequately, takes up room and wait not enoughly greatlyyer, therefore is not widely used always.
Strut cantilever case beam is a kind of new beam type for occurring in the bridge construction in recent years also.It is meant and under box girder cantilever, is provided with point-supported rod member.This kind form of structure, under the constant prerequisite of deck-molding, along with the increase of box girder cantilever width, the angle of inclination of strut increases thereupon, and stressed effect weakens gradually.At present, the box girder cantilever Breadth Maximum of this kind form is 5.5m at home.
Along with the fast development of domestic economy, quickening of urbanization process, urban population density strengthens day by day, and the land resources that can supply utilize will be rare day by day, and this has proposed increasingly high requirement to the infrastructure in city especially transport development.How to improve the urban space utilization rate, how under the prerequisite that satisfies function of use, landscape effect, economical with materials, energy-saving and emission-reduction will be one of factors of considering of Urban Bridge design demand emphasis.
Summary of the invention
The purpose of the utility model is to overcome the shortcoming of prior art; A kind of novel box-beam structure form is provided; Structure is more become on space occupancy, material usage rationally, in cycle structure life-cycle, have a kind of box-beam structure of stronger comprehensive economic index with the cantilever fagging.
In order to achieve the above object, the technical scheme of the utility model employing is:
A kind of box-beam structure of the utility model with the cantilever fagging; It comprises top board, be arranged on the base plate of top board below and be arranged on top board and base plate between left and right limit web; Described top board, base plate and left and right limit web surround the casing of a sealing; Both sides at described top board are separately installed with outrigger base, and described outrigger base and top board connect and compose bridge deck, link to each other through fagging between described outrigger base and the limit web.
The advantage of the utility model is:
(1) a kind of box-beam structure with the cantilever fagging of the utility model is compared with the box-beam structure of routine, can reduce technical-economic indexes such as concrete amount, can alleviate dead load, saves construction costs.Bridge width is big more, and its economy is good more.
(2) a kind of box-beam structure with the cantilever fagging of the utility model, horizontal cantilever plate length can be taken according to bridge width flexibly, to the greatest extent and can adjusting tank girder construction space occupancy.
(3) a kind of box-beam structure of the utility model with the cantilever fagging; Top board, base plate, outrigger base all have bigger concrete area; Can resist positive hogging moment effectively, and satisfy the requirement of arrangement of reinforcement, adaptation has the structure of positive hogging moment; Like continuous girder bridge, arch bridge, rigid frame bridge, cable stayed bridge etc., possesses extensive applicability.
(4) a kind of box-beam structure of the utility model with the cantilever fagging, load-carrying members combine with force transferring structure, make each parts stressed jointly, reach economic effect, and cross section efficient is high simultaneously, and suitable prestressed reinforced concrete construction space cloth bundle, receives economic effect more.
(5) a kind of box-beam structure with the cantilever fagging of the utility model, stressed clear and definite for outrigger base, simple structure combines with the effective of fagging, can resist the outrigger base amount of deflection that mobile load produces, and improves road-ability.
(6) a kind of box-beam structure with the cantilever fagging of the utility model makes beam body landscape effect more very thin, and the dynamics that has more structure is beautiful.
(7) a kind of box-beam structure with the cantilever fagging of the utility model, because the existence of big cantilever, the beam body side surface can be avoided the sunlight direct projection basically, can reduce the influence that the temperature difference produces for structural internal force.
To sum up, the big cantilever box-beam structure of band fagging is on the basis of the box-girder of routine; Be technical indicators such as space availability ratio under reduction concrete amount, the raising bridge, through a kind of new box-girder that the mode that fagging is set under outrigger base obtains, this structure can effectively reduce the superstructure scale of construction; Reduce the substructure scale of construction accordingly; Minimizing takies soil and space, reaches economical with materials, saves the effect of construction costs.This structure possesses horizontal cantilever length and can take flexibly according to bridge width; Stress performance is good; Advantages such as it is comfortable to drive a vehicle; Structure design, construction, application are more become rationally, and in cycle structure life-cycle, have stronger comprehensive economic index, will become the important component part in the bridge superstructure type selecting future.
Description of drawings
Fig. 1 is the A-A sectional view of facade structures of a kind of box-beam structure with the cantilever fagging of the utility model shown in Figure 2;
Fig. 2 is the B-B sectional view of section structure of a kind of box-beam structure with the cantilever fagging of the utility model shown in Figure 1;
Fig. 3 is the C-C sectional view of section structure shown in Figure 1.
The specific embodiment
Below in conjunction with specific embodiment the utility model is described in detail.
A kind of box-beam structure like the utility model shown in the drawings with the cantilever fagging; It comprises top board 1, be arranged on the base plate 2 of top board 1 below, median ventral plate 3, be arranged on left and right limit web 4, outrigger base 5, fagging 6 and diaphragm 7 between top board and the floor; Described top board 1, base plate 2 and left and right limit web 4 surround the casing of a sealing; Be separately installed with outrigger base 5 in the both sides of described top board 1; Described outrigger base and top board connect and compose bridge deck, longitudinally link to each other through a plurality of faggings 6 between described outrigger base and the limit web.
According to the difference of the big cantilever box-beam structure width of described band fagging, in described casing along several median ventral plate 3 that is vertically arranged with of casing.
Preferably described box house along casing be horizontally arranged with the multiple tracks diaphragm, it is corresponding that described multiple tracks diaphragm and fagging are provided with the position.Diaphragm and fagging have just formed a continuous bearing structure at direction across bridge like this, have improved the stress performance of outrigger base on the one hand, have improved the integral rigidity of structure on the other hand.
The vertical bridge in preferred edge is provided with fagging one to every spacing 4m～4.5m, to every spacing 4m～4.5m diaphragm is set one along vertical bridge.Through the The matching analysis to concerning between different bridge deck thickness and the fagging spacing, fagging and diaphragm are provided with together to spacing 4m～4.5m along vertical bridge, more can save engineering material, more economical rationality.
Claims (4)
1. box-beam structure with the cantilever fagging; It is characterized in that: it comprises top board, be arranged on the base plate of top board below and be arranged on top board and base plate between left and right limit web; Described top board, base plate and left and right limit web surround the casing of a sealing; Both sides at described top board are separately installed with outrigger base, and described outrigger base and top board connect and compose bridge deck, link to each other through fagging between described outrigger base and the limit web.
2. the box-beam structure of band cantilever fagging according to claim 1 is characterized in that: in described casing along several median ventral plate that is vertically arranged with of casing.
3. the box-beam structure of band cantilever fagging according to claim 1 is characterized in that: described box house along casing be horizontally arranged with the multiple tracks diaphragm, it is corresponding that described multiple tracks diaphragm and fagging are provided with the position.
4. the box-beam structure of band cantilever fagging according to claim 3 is characterized in that: to every spacing 4m～4.5m described fagging together is set along vertical bridge, to every spacing 4m～4.5m described diaphragm together is set along vertical bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200567437U CN202519575U (en) | 2012-02-21 | 2012-02-21 | Box girder structure with cantilever supporting plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200567437U CN202519575U (en) | 2012-02-21 | 2012-02-21 | Box girder structure with cantilever supporting plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202519575U true CN202519575U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200567437U Expired - Lifetime CN202519575U (en) | 2012-02-21 | 2012-02-21 | Box girder structure with cantilever supporting plates |
Country Status (1)
| Country | Link |
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| CN (1) | CN202519575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561170A (en) * | 2012-02-21 | 2012-07-11 | 天津市市政工程设计研究院 | Broad cantilever box girder structure with support plates |
| CN103758026A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Single-box multi-chamber box girder |
-
2012
- 2012-02-21 CN CN2012200567437U patent/CN202519575U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561170A (en) * | 2012-02-21 | 2012-07-11 | 天津市市政工程设计研究院 | Broad cantilever box girder structure with support plates |
| CN103758026A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Single-box multi-chamber box girder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
| CX01 | Expiry of patent term |