CN106968160A - The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure - Google Patents
The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure Download PDFInfo
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- CN106968160A CN106968160A CN201710237438.5A CN201710237438A CN106968160A CN 106968160 A CN106968160 A CN 106968160A CN 201710237438 A CN201710237438 A CN 201710237438A CN 106968160 A CN106968160 A CN 106968160A
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- concrete
- steel truss
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- truss girder
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The short side mixed with beams of concrete the invention discloses a kind of steel truss girder is across Cable-Stayed Bridge Structure, including main span steel truss girder, end bay beams of concrete and suspension cable, the main span steel truss girder, end bay beams of concrete are linked together by toughened internal stress transition, main bridge bridge tower is provided with the toughened internal stress, main bridge bridge tower lower end is fixed by cushion cap with basis, host bridge bridge tower is connected that there is provided load force by more with suspension cable with main span steel truss girder or/and end bay concrete beam side.The present invention can overcome traditional cable-stayed bridge main span span ability to be limited to, end bay needs the problem of larger length with main span counterweight to balance, end bay length is more conventional to shorten about 40%, facilitates mountain area narrow valley region cable-stayed bridge span distribution, improves the scope of application of cable-stayed bridge.
Description
Technical field
The invention belongs to bridge structure technical field, and in particular to the short side that a kind of steel truss girder is mixed with beams of concrete is across oblique
Draw bridge structure.
Background technology
During bridge is highway, railway, urban road and road and water conservancy construction, in order to across various obstacles (such as river
Stream or other structures) works.Divided by structure feature, bridge can be divided into beam, arch, rigid frame, rope and combined system.
Cable-stayed bridge is as a kind of guy system, and due to the elastic bearing by suspension cable, moment of flexure is smaller so that girder size subtracts significantly
Small, dead load significantly mitigates, and span ability is greatly improved, and is the main bridge type of Longspan Bridge.
Cable-stayed bridge is mainly made up of main bridge bridge tower, girder and suspension cable.Conventional cable-stayed bridge is three across double-tower type structures, its
Main span and two end bays use same structure, such as all using concrete girder or steel box-girder or steel truss girder or combination beam.
To make structure stress rationally, the across footpath ratio of end bay and main span is general in 0.4 or so, when this ratio further reduces, end bay
The stress of structure need to be adjusted using measures such as ballasts.On the whole, the main deficiency of traditional cable-stayed bridge is：(1) end bay and master
Across across footpath ratio is higher, thus limit its main span span ability；(2) if reducing across footpath ratio using ballast method, and greatly
Bridge load is added greatly, bridge self-bearing capacity is reduced, is particularly unfavorable for cable-stayed bridge in China western mountainous areas valley
The area of end bay arrangement, is reduced the method for cable-stayed bridge end bay across footpath using traditional ballast method, the economy of bridge is dropped significantly
It is low.
Therefore develop a kind of stress stronger to end bay across footpath adaptability, higher to material use, making structure more rationally,
The more preferable Cable-Stayed Bridge Structure form of economy, has great practical value.
The content of the invention
The present invention is in order to solve the above problems, it is proposed that across the cable-stayed bridge knot of short side that a kind of steel truss girder is mixed with beams of concrete
Structure, the present invention improves the span setting and load-carrying efficiency of Cable-Stayed Bridge Structure in terms of structural system and inherent force-mechanism, can
Traditional cable-stayed bridge main span span ability is overcome to be limited to, end bay needs the problem of larger length with main span counterweight to balance, side
Span length's degree is more conventional to shorten about 40%, facilitates mountain area narrow valley region cable-stayed bridge span distribution, improves the applicable model of cable-stayed bridge
Enclose.
To achieve these goals, the present invention is adopted the following technical scheme that：
The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure, including main span steel truss girder, end bay concrete
Beam and suspension cable, the main span steel truss girder, end bay beams of concrete are linked together by toughened internal stress transition, the steel reinforced concrete knot
Close and be provided with main bridge bridge tower at section, main bridge bridge tower lower end is fixed by cushion cap with basis, and host bridge bridge tower passes through more with oblique pull
Rope is connected that there is provided load force with main span steel truss girder or/and end bay concrete beam side.
Further, the end bay beams of concrete is concrete box girder construction.
Certainly, those skilled in the art can be under the enlightenment of the operation principle of the present invention, by the shape of end bay beams of concrete
Shape or structure carry out simple substitutions and modifications, and these are not admitted to creative work, ought to belong to protection scope of the present invention.
Further, the main span steel truss girder main truss includes top boom, lower boom and web member, the top boom, lower boom
Between connected by the web member of many distributed arrangements.
It is preferred that, have between the web member and a connection fulcrum is had between angle, every N number of web member.N is more than or equal to 2.
Certainly, those skilled in the art can be under the enlightenment of the operation principle of the present invention, by the shape of main span steel truss girder
Or structure, and the structure or shape of main span steel truss girder main truss carry out simple substitutions and modifications, these are not admitted to creative labor
It is dynamic, protection scope of the present invention ought to be belonged to.
Further, the basis instrument is in the suitable ground layer of the following engineering geology of earth's surface, and cushion cap is located at basis
On, with being connected integral at the top of basis.
Further, host bridge bridge tower is arranged on cushion cap, is rigidly connected with cushion cap, using thin-walled hollow section.
Further, auxiliary pier and abutment pier are provided with the end bay beams of concrete.
Further, the abutment pier, auxiliary pier are arranged on cushion cap, are rigidly connected with cushion cap, are cut using thin-walled hollow
Face.
Further, the end bay beams of concrete is placed on the bearing of abutment pier, auxiliary pier, bridge tower thwart beam, one end and steel reinforced concrete
Adapter section is connected.
Further, the main span steel truss girder is located between two main bridge towers.
Further, the toughened internal stress two ends connect end bay beams of concrete and main span steel truss girder, end bay coagulation respectively
Tu Liang, main span steel truss girder and toughened internal stress are collectively forming the girder system of full-bridge.
Further, described suspension cable one end is connected with main bridge bridge tower upper king-post strut, the other end and end bay concrete girder or
Main span steel truss girder is connected.
Further, the end bay concrete girder, toughened internal stress, the top surface of main span steel truss girder and road route longitudinal slope
It is basically identical, more straight, bear vehicle, the effect of crowd.
I.e. described end bay concrete girder, toughened internal stress, the top surface of main span steel truss girder and road route longitudinal slope are same
Extended surface.
The across footpath ratio of the end bay beams of concrete and main span steel truss girder is less than 0.3.
The present invention operation principle, the short side that steel truss girder of the present invention is mixed with beams of concrete across Cable-Stayed Bridge Structure system and
Mechanical characteristics include：(1) suspension cable provides self equilibrium systemses and the resilient support to girder；(2) end bay uses concrete girder,
There is provided the deadweight of enough rigidities of structure and balance main span load.
The girder end bay and main span of suitable skew bridge are determined according to structure stress size, code for structural design prevailing for the time being in force
For same material, or identical form of fracture, and side main span ratio is general 0.4 or so.And what steel truss girder was mixed with beams of concrete
Not only material is different from main span for across the Cable-Stayed Bridge Structure end bay of short side, and form of fracture is also entirely different；The across footpath ratio of side main span can
Less than 0.3 is reduced to, the adaptability of end bay is greatly improved.
Compared with prior art, beneficial effects of the present invention are：
(1) end bay of the present invention greatly reduces with main span ratio, and end bay length is more conventional to shorten about 40%, facilitates spanning cloth
Put, enhance adaptability of the bridge to construction condition；
(2) deadweight of end bay beams of concrete is made full use of to solve the problems, such as ballast, time dependent loading is drag, makes the stress of structure more
Rationally, the performance of material is played and given full play to, and improves stock utilization；
(3) end bay uses concrete structure, can cantilever pouring construction, can rack construction, arrangement and method for construction is more flexible and optional,
Be conducive to the control and raising of construction quality.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.
Fig. 1 is across the Cable-Stayed Bridge Structure schematic diagram of short side that steel truss girder is mixed with beams of concrete；
Fig. 2 is end bay beams of concrete sectional schematic diagram；
Fig. 3 is main span steel truss girder sectional schematic diagram；
Fig. 4 is toughened internal stress elevational schematic view；
In figure：1- bases, 2- cushion caps, the main bridge bridge towers of 3-, 4- abutment piers (transition pier), 5- auxiliary piers, 6- end bay beams of concretes,
On 7- main span steel truss girders, 8- toughened internal stress, 9- suspension cables, the hollow box beam of 10- concrete thin-walls, 11- steel truss girder main trusses, 12-
Chord member, 13- lower booms, 14- web members.
Embodiment：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, the across footpath in the presence of (1) side main span is higher in the prior art, end bay across footpath it is suitable
Answering property is relatively low；(2) across footpath ratio is reduced using ballast method, considerably increases bridge load, reduce bridge itself carrying energy
Power.In order to solve technical problem as above, the short side mixed with beams of concrete present applicant proposes a kind of steel truss girder is across cable-stayed bridge
Structure.
Below in conjunction with accompanying drawing, the structure to the present invention is further described.
The invention provides a kind of main span is different from end bay material, form of fracture is entirely different, steel truss girder and concrete
The short side of beam concrete is across Cable-Stayed Bridge Structure.Traditional cable-stayed bridge is compared, the adaptability of end bay is stronger, natural conditions can built
Limited space application, reasonably make use of end bay beams of concrete deadweight instead of it is traditional it is another set ballast body mode, pass through
The design of toughened internal stress, realizes the connection transition of different cross section form.The arrangement and method for construction of end bay has more selections.Specifically
As shown in Figure 1 to 4, the short side that steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure by basis 1, cushion cap 2, main bridge bridge tower
3rd, abutment pier 4, auxiliary pier 5, end bay beams of concrete 6, main span steel truss girder 7, toughened internal stress 8 and suspension cable 9 are constituted.Described end bay
Beams of concrete 6 is the structure of concrete box girder 10.Described main span steel truss girder main truss 11 is by top boom 12, lower boom 13 and web member 14
Composition.
With reference to shown in Fig. 1, basis 1 is arranged in the suitable ground layer of the following engineering geology of earth's surface, and cushion cap 2 is located at basis 1
On with basis 1 top be connected integral.Main bridge bridge tower 3 is arranged on cushion cap 2 using thin-walled hollow section, firm with cushion cap 2
Property connection.Abutment pier 4, auxiliary pier 5 are arranged on cushion cap 2, are rigidly connected with cushion cap 2 using thin-walled hollow section.End bay coagulation
Native beam 6 is placed on the crossbeam of abutment pier 4, auxiliary pier 5 and main bridge bridge tower 3, forms rock-steady structure.Main span steel truss girder 7 is located at two main bridges
Between bridge tower 3.End bay beams of concrete 6 is connected with main span steel truss girder 7 by toughened internal stress 8, forms the girder system of full-bridge.Tiltedly
The one end of drag-line 9 is connected with the upper king-post strut of main bridge bridge tower 3, and the other end is connected with end bay beams of concrete 6 or main span steel truss girder 7.End bay
Beams of concrete 6, toughened internal stress 8, the girder top surface of the formation of main span steel truss girder 7 and road route longitudinal slope are basically identical, more flat
Directly, vehicle, the effect of crowd are born.
As shown in Fig. 2 the end bay beams of concrete of the present invention is tank structure, the two ends of the end bay beams of concrete are set
It is equipped with the hollow box beam of concrete thin-wall.Certainly, those skilled in the art can be under the enlightenment of the operation principle of the present invention, by side
The shape or structure of span concrete beam carry out simple substitutions and modifications, and these are not admitted to creative work, ought to belong to this hair
Bright protection domain.
Such as Fig. 3 main span steel truss girders main truss includes top boom, lower boom and web member, passes through between the top boom, lower boom
The web member connection of many distributed arrangements.Have between web member and a connection fulcrum is had between angle, every 3 web members.
Certainly, those skilled in the art can be under the enlightenment of the operation principle of the present invention, by the shape of main span steel truss girder
Or structure, and the structure or shape of main span steel truss girder main truss carry out simple substitutions and modifications, these are not admitted to creative labor
It is dynamic, protection scope of the present invention ought to be belonged to.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (10)
1. the short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Including main span steel truss girder, end bay
Beams of concrete and suspension cable, the main span steel truss girder, end bay beams of concrete are linked together by toughened internal stress transition, described
Main bridge bridge tower is provided with toughened internal stress, main bridge bridge tower lower end is fixed by cushion cap with basis, and host bridge bridge tower passes through many
It is connected that there is provided load force with main span steel truss girder or/and end bay concrete beam side with suspension cable.
2. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
End bay beams of concrete is stated for concrete box girder construction.
3. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
Stating main span steel truss girder main truss includes top boom, lower boom and web member, passes through many distributed cloth between the top boom, lower boom
The web member connection put.
4. the short side that a kind of steel truss girder as claimed in claim 3 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
Stating has angle between web member, per N number of web member between have a connection fulcrum, N is more than or equal to 2.
5. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
Basis instrument is stated in the suitable ground layer of the following engineering geology of earth's surface, cushion cap is located on basis, with being connected at the top of basis
It is overall.
6. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
State main bridge bridge tower to be arranged on cushion cap, be rigidly connected with cushion cap, using thin-walled hollow section；
Or it is provided with auxiliary pier and abutment pier at the end bay beams of concrete.
7. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
State abutment pier, auxiliary pier to be arranged on cushion cap, be rigidly connected with cushion cap, using thin-walled hollow section；
Or the end bay beams of concrete is placed on the bearing of abutment pier, auxiliary pier, bridge tower thwart beam, one end is connected with toughened internal stress.
8. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
Main span steel truss girder is stated between two main bridge towers；
Or described suspension cable one end is connected with main bridge bridge tower upper king-post strut, the other end connects with end bay concrete girder or main span steel truss girder
Connect.
9. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：Institute
State toughened internal stress two ends and connect end bay beams of concrete and main span steel truss girder, end bay beams of concrete, main span steel truss girder and steel respectively
Mixed adapter section is collectively forming the girder system of full-bridge；
Or the end bay concrete girder, toughened internal stress, the top surface of main span steel truss girder and road route longitudinal slope are in same extension
Face.
10. the short side that a kind of steel truss girder as claimed in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that：
The across footpath ratio of the end bay beams of concrete and main span steel truss girder is less than 0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237438.5A CN106968160A (en) | 2017-04-12 | 2017-04-12 | The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237438.5A CN106968160A (en) | 2017-04-12 | 2017-04-12 | The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure |
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| CN106968160A true CN106968160A (en) | 2017-07-21 |
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| CN201710237438.5A Pending CN106968160A (en) | 2017-04-12 | 2017-04-12 | The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270612A (en) * | 2020-02-14 | 2020-06-12 | 重庆城建控股(集团)有限责任公司 | Auxiliary via-hole method for front end of long-span T-beam bridge girder erection machine over-span truck crane |
| CN111764252A (en) * | 2020-07-23 | 2020-10-13 | 中铁第四勘察设计院集团有限公司 | Box and truss combined mixed beam cable-stayed bridge |
| CN116341073A (en) * | 2023-03-25 | 2023-06-27 | 中交第二公路勘察设计研究院有限公司 | Pre-compression stress application design method for main span middle bridge deck of steel-UHPC combined beam cable-stayed bridge and implementation method thereof |
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| US5072474A (en) * | 1989-07-12 | 1991-12-17 | Dilger Walter H | Bridge construction |
| CN103758023A (en) * | 2014-01-23 | 2014-04-30 | 长沙理工大学 | Prestressed concrete and steel truss mixed continuous rigid frame bridge and construction method thereof |
| CN207552905U (en) * | 2017-04-12 | 2018-06-29 | 中交第二公路勘察设计研究院有限公司 | The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure |
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| US5072474A (en) * | 1989-07-12 | 1991-12-17 | Dilger Walter H | Bridge construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270612A (en) * | 2020-02-14 | 2020-06-12 | 重庆城建控股(集团)有限责任公司 | Auxiliary via-hole method for front end of long-span T-beam bridge girder erection machine over-span truck crane |
| CN111270612B (en) * | 2020-02-14 | 2021-08-17 | 重庆城建控股(集团)有限责任公司 | Auxiliary front-end hole passing method for large-span T-shaped beam bridge erecting machine over-span automobile crane |
| CN111764252A (en) * | 2020-07-23 | 2020-10-13 | 中铁第四勘察设计院集团有限公司 | Box and truss combined mixed beam cable-stayed bridge |
| CN116341073A (en) * | 2023-03-25 | 2023-06-27 | 中交第二公路勘察设计研究院有限公司 | Pre-compression stress application design method for main span middle bridge deck of steel-UHPC combined beam cable-stayed bridge and implementation method thereof |
| CN116341073B (en) * | 2023-03-25 | 2024-04-02 | 中交第二公路勘察设计研究院有限公司 | Pre-compression stress application design method for main span middle bridge deck of steel-UHPC combined beam cable-stayed bridge and implementation method thereof |
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Application publication date: 20170721 |