CN206279435U - A kind of trough girder - Google Patents
A kind of trough girder Download PDFInfo
- Publication number
- CN206279435U CN206279435U CN201621171604.3U CN201621171604U CN206279435U CN 206279435 U CN206279435 U CN 206279435U CN 201621171604 U CN201621171604 U CN 201621171604U CN 206279435 U CN206279435 U CN 206279435U
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- trough girder
- continuous
- box beam
- box
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Abstract
The utility model discloses a kind of trough girder, including one no less than three across continuous beam, it is characterised in that along continuous beam length direction, at continuous beam central bearing point, beam section is shaped as upper and lower two parts composition, and top is opening trough girder, and bottom is box beam；From central bearing point to both sides bearing of trend, section top groove profile depth of beam is constant along beam length direction, and section lower tank depth of beam is gradually reduced, and across span centre and end bay end in continuous beam, box beam height down to zero, beam section shape turns into opening groove profile beam section.The utility model can be effectively reduced the building height of continuous bridge bridge floor to beam bottom, advantageously reduce bridge superstructure weight, be conducive to the design for having the traffic route vertical section at Clearance requirement under bridge, and then reduce construction costs.
Description
Technical field
The utility model is related to civil Engineering Design technical field, specifically a kind of trough girder.
Background technology
At present, the section form that the city superstructure of continuous beam bridge in the usually used leap road of China and river course is used
It is box beam, the type beam building height is higher, therefore often in order to meet the clear height under bridge, clear span requirement, and to the friendship at this
Logical track profile design brings difficulty, and causes the engineering cost to increase.Construction of the development in city to Urban Bridge simultaneously is carried
The requirement such as attractive appearance, noise reduction environmental protection is gone out, conventional box-type section continuous bridge is increasingly difficult to meet these requirements.
In order to solve above-mentioned problem, reduction box beam is employed in the engineering of part highly, the measure such as optimization box girder web shape,
But these measures can only improve and cannot tackle the problem at its root.
Utility model content
The purpose of this utility model is to provide a kind of trough girder, and this beam type can be effectively reduced constructionheightofbridge,
Ensure the security of structure simultaneously.
To realize this purpose, the technical solution of the utility model is as follows：A kind of trough girder, including one no less than three across
Continuous beam, it is characterised in that along continuous beam length direction, at continuous beam central bearing point, beam section is shaped as upper and lower two parts group
Into top is opening trough girder, and bottom is box beam；From central bearing point to both sides bearing of trend, section top groove profile depth of beam edge
Beam length direction is constant, and section lower tank depth of beam is gradually reduced, and across span centre and end bay end in continuous beam, box beam is highly
Zero is tapered to, beam section shape turns into opening groove profile beam section.
According to preferred embodiment of the present utility model, box beam root edge is according to parabola or circular curve smooth-going change and gradually leans on
Nearly box beam apical margin.
According to preferred embodiment of the present utility model, box beam root edge moves closer to box beam apical margin along broken line form.
According to preferred embodiment of the present utility model, the median ventral plate and section lower tank of the opening trough girder on beam section top
The median ventral plate alignment of type beam.
According to preferred embodiment of the present utility model, the web of the opening trough girder on beam section top is consolidated with base plate.
According to preferred embodiment of the present utility model, the base plate of the opening trough girder on beam section top doubles as section lower tank
The top board of type beam.
Trough girder in the utility model can make in precasting yard segmental machining, scene using wet joint, be glued seam or
Dry joint form connection.Can also integrin trough girder pour at the scene.The utility model can be effectively reduced continuous bridge bridge floor
To the building height at beam bottom, be conducive to the design for having the traffic route vertical section at Clearance requirement under bridge, and then reduce engineering making
Valency.The utility model good appearance, is particularly well-suited to inner city, suburb etc. higher to Bridge Landscape, noise control requirement
The bridges such as track traffic, trolleybus, tramcar, the bus rapid transit in area.The utility model remarkable in economical benefits, society's effect
Benefit is good.
Brief description of the drawings
Fig. 1 is elevation of the present utility model（By taking 1/2 three-span continuous beam as an example）.
Fig. 2 is profilograph of the present utility model（By taking 1/2 three-span continuous beam as an example）.
Fig. 3 is plan of the present utility model（By taking 1/2 three-span continuous beam as an example）.
Fig. 4 is beam section figure at central bearing point of the present utility model.
Fig. 5 in of the present utility model at span centre and end bay beam-ends beam section figure.
Specific embodiment
A kind of trough girder, including one no less than three across continuous beam, the trough girder by top opening trough girder 1 and under
The box beam 2 in portion is constituted, it is characterized by along continuous beam length direction, commensurate structure loading characteristic, beam section is groove profile or groove profile
With the combination of box.At continuous beam central bearing point, beam section is shaped as upper and lower two parts composition, and top is three road webs and base plate
The opening trough girder of composition, bottom is box beam, and box beam top board unites two into one with groove-shaped beam bottom plate.From central bearing point to both sides extension side
To section top groove profile depth of beam is constant along beam length direction, and back edge is flushed.Section lower tank depth of beam is gradually reduced,
I.e. box beam apical margin is flushed along beam length direction, and box beam root edge is according to curve（Parabola or circular curve）Or broken line smooth-going change and gradually
Near box beam apical margin.Close in continuous beam, across span centre and end bay end, box beam height down to zero, beam section shape turns into
The opening rectangle and trapezium channel section that three road webs are constituted with base plate.
As shown in Figure 4 and Figure 5, the opening trough girder on section top includes median ventral plate 4 and the side abdomen positioned at median ventral plate both sides
Plate 3, the median ventral plate 4 and side web 3 are consolidated with groove-shaped beam bottom plate 5.The box beam of section bottom includes box beam top board 6, case
The box beam of type beam base plate 7 and the composition of box beam side web 8, the box beam middle part sets parallel with box beam side web 8
Box beam median ventral plate 9.
The median ventral plate 4 of the opening trough girder on section top and the alignment of median ventral plate 9 of section bottom box beam, on section
Top board 6 of the groove-shaped beam bottom plate 5 in portion as section bottom box beam.
Hc is section top half trough girder deck-molding, and Hx is lower section box beam deck-molding.Along beam length direction, Hc values
Constant, Hx values are continually changing and minimum value is zero.
Claims (6)
1. a kind of trough girder, including one no less than three across continuous beam, it is characterised in that along continuous beam length direction, continuous
Liang Zhongzhidianchu, beam section is shaped as upper and lower two parts composition, and top is opening trough girder, and bottom is box beam；From central bearing point to
Both sides bearing of trend, section top groove profile depth of beam is constant along beam length direction, and section lower tank depth of beam is gradually reduced,
Across span centre and end bay end in continuous beam, box beam height down to zero, beam section shape turns into opening groove profile beam section.
2. a kind of trough girder as described in claim 1, it is characterised in that：At continuous beam central bearing point, the opening on section top
The median ventral plate of trough girder and the median ventral plate alignment of section bottom box beam.
3. a kind of trough girder as described in claim 1, it is characterised in that：The web and base plate of the opening trough girder on section top
Consolidation.
4. a kind of trough girder as described in claim 1, it is characterised in that：The base plate of the opening trough girder on section top doubles as cutting
The top board of face bottom box beam.
5. a kind of trough girder as described in claim 1, it is characterised in that：Box beam root edge becomes according to parabola or circular curve smooth-going
Change and move closer to box beam apical margin.
6. a kind of trough girder as described in claim 1, it is characterised in that：Box beam root edge moves closer to box beam top along broken line form
Edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621171604.3U CN206279435U (en) | 2016-10-26 | 2016-10-26 | A kind of trough girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621171604.3U CN206279435U (en) | 2016-10-26 | 2016-10-26 | A kind of trough girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206279435U true CN206279435U (en) | 2017-06-27 |
Family
ID=59082080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621171604.3U Active CN206279435U (en) | 2016-10-26 | 2016-10-26 | A kind of trough girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206279435U (en) |
-
2016
- 2016-10-26 CN CN201621171604.3U patent/CN206279435U/en active Active
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