CN207552905U - 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 PDF

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Publication number
CN207552905U
CN207552905U CN201720383898.4U CN201720383898U CN207552905U CN 207552905 U CN207552905 U CN 207552905U CN 201720383898 U CN201720383898 U CN 201720383898U CN 207552905 U CN207552905 U CN 207552905U
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concrete
steel truss
beams
truss girder
cable
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CN201720383898.4U
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彭元诚
宗昕
吴游宇
丁少凌
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CCCC Second Highway Consultants Co Ltd
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CCCC Second Highway Consultants Co Ltd
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Abstract

The short side mixed with beams of concrete the utility model 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 at the toughened internal stress, main bridge bridge tower lower end is fixed by cushion cap and basis, host bridge bridge tower provides load force by mostly being connect with suspension cable with main span steel truss girder or/and end bay concrete beam side.The utility model 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

The short side that a kind of steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure
Technical field
The utility model 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 Across Cable-Stayed Bridge Structure.
Background technology
Bridge is in highway, railway, urban road and road and water conservancy construction, in order to cross over various obstacle (such as rivers Stream or other structures) works.It is 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 of main bridge bridge tower, girder and suspension cable.Common cable-stayed bridge is three across double-tower type structures, 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. Structure is reasonable to make, and the across footpath ratio of end bay and main span is generally in 0.4 or so, when this ratio further reduces, end bay The stress of the measures such as ballast adjustment structure need to be used.On the whole, the main deficiency of traditional cable-stayed bridge is:(1) end bay and master Across across footpath ratio is higher, thus limits its main span span ability;(2) if reducing across footpath ratio using ballast method, and big Bridge load is increased greatly, reduces bridge self-bearing capacity, 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 made to drop significantly It is low.
Therefore develop it is a kind of it is stronger to end bay across footpath adaptability, to material use higher, make the stress of structure more rationally, The better Cable-Stayed Bridge Structure form of economy, has great practical value.
Utility model content
The utility model is to solve the above-mentioned problems, it is proposed that the short side that a kind of steel truss girder is mixed with beams of concrete is across oblique pull Bridge structure, the utility model improve the span setting of Cable-Stayed Bridge Structure and carrying effect in terms of structural system and inherent force-mechanism Rate can overcome traditional cable-stayed bridge main span span ability to be limited to, what end bay needed larger length to be balanced with main span counterweight Problem, end bay length is more conventional to shorten about 40%, facilitates mountain area narrow valley region cable-stayed bridge span distribution, improves cable-stayed bridge The scope of application.
To achieve these goals, the utility model adopts the following technical solution:
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 It closes and is provided with main bridge bridge tower at section, main bridge bridge tower lower end is fixed by cushion cap and basis, and host bridge bridge tower passes through mostly with oblique pull Rope is connect with main span steel truss girder or/and end bay concrete beam side, provides load force.
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 utility model, by end bay beams of concrete Shape or structure carry out simple replacement and modification, these are not admitted to creative work, ought to belong to the guarantor of the utility model Protect range.
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 more distributed arrangements.
Preferably, there is angle, often there are one connecting fulcrums altogether between N number of web member between the 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 utility model, by main span steel truss girder Shape or structure and the structure or shape of main span steel truss girder main truss carry out simple replacement and modification, these are not admitted to create Property labour, the scope of protection of the utility model ought to be belonged to.
Further, for the basis instrument in the suitable ground layer of the following engineering geology of earth's surface, cushion cap is located at basis On, it is integral with being connect 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 at 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 connects.
Further, the main span steel truss girder is between two main bridge towers.
Further, the toughened internal stress both ends connect end bay beams of concrete and main span steel truss girder, end bay coagulation respectively The girder system of full-bridge is collectively formed with toughened internal stress for Tu Liang, main span steel truss girder.
Further, described suspension cable one end is connect with main bridge bridge tower upper king-post strut, the other end and end bay concrete girder or Main span steel truss girder connects.
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 the effect of vehicle, 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 operation principle of the utility model, the short side that the utility model steel truss girder is mixed with beams of concrete is across Cable-Stayed Bridge Structure System include with mechanical characteristics:(1) suspension cable provides self equilibrium systems and the resilient support to girder;(2) end bay is using mixed Solidifying soil girder provides enough rigidities of structure and balances the dead weight of 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 generally 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 0.3 is reduced to hereinafter, greatly improving the adaptability of end bay.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model end bay greatly reduces with main span ratio, and end bay length is more conventional to shorten about 40%, facilitates bridge Across arrangement, adaptability of the bridge to construction condition is enhanced;
(2) dead weight 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 performance of material gives full play to, and improves stock utilization;
(3) end bay use 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.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining 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, 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, on 12- Chord member, 13- lower booms, 14- web members.
Specific embodiment:
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another It indicates, all technical and scientific terms used herein has 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 specific 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 the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, the across footpath that (1) side main span exists in the prior art is higher, 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.The technical issues of in order to solve 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 attached drawing, the structure of the utility model is further described.
The utility model provides that a kind of main span is different from end bay material, form of fracture is entirely different, steel truss girder with it is mixed The short side of solidifying soil beam concrete is across Cable-Stayed Bridge Structure.Traditional cable-stayed bridge is compared, the adaptability of end bay is stronger, can build nature The space application that condition is limited, the dead weight that end bay beams of concrete is reasonably utilized separately set ballast body mode instead of traditional, By the design of toughened internal stress, the connection transition of different cross section form is realized.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 across Cable-Stayed Bridge Structure by basic 1, cushion cap 2, main bridge Bridge tower 3, 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 form.Described End bay beams of concrete 6 is 10 structure of concrete box girder.The main span steel truss girder main truss 11 is by top boom 12, lower boom 13 and abdomen Bar 14 forms.
With reference to shown in Fig. 1, basis 1 is set 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 connect it is integral.Main bridge bridge tower 3 is arranged on cushion cap 2, with cushion cap 2 just using thin-walled hollow section 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 connect with main span steel truss girder 7 by toughened internal stress 8, forms the girder system of full-bridge.Tiltedly 9 one end of drag-line 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 The girder top surface and road route longitudinal slope that beams of concrete 6, toughened internal stress 8, main span steel truss girder 7 are formed are basically identical, more flat Directly, the effect of vehicle, crowd is born.
As shown in Fig. 2, the end bay beams of concrete of the utility model is tank structure, the two of the end bay beams of concrete End is provided with the hollow box beam of concrete thin-wall.Certainly, those skilled in the art being capable of opening in the operation principle of the utility model Under showing, the shape of end bay beams of concrete or structure are subjected to simple replacement and modification, these are not admitted to creative work, ought to Belong to the scope of protection of the utility model.
If Fig. 3 main span steel truss girders main truss includes top boom, lower boom and web member, pass through between the top boom, lower boom The web member connection of more distributed arrangements.There is angle, there are one connecting fulcrums altogether between every 3 web members between web member.
Certainly, those skilled in the art can be under the enlightenment of the operation principle of the utility model, by main span steel truss girder Shape or structure and the structure or shape of main span steel truss girder main truss carry out simple replacement and modification, these are not admitted to create Property labour, the scope of protection of the utility model ought to be belonged to.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly The limitation of type protection domain, those skilled in the art should understand that, on the basis of the technical solution of the utility model, ability Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model Within enclosing.

Claims (12)

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 at toughened internal stress, main bridge bridge tower lower end is fixed by cushion cap and basis, and host bridge bridge tower passes through more It is connect with suspension cable with main span steel truss girder or/and end bay concrete beam side, load force is provided.
2. the short side that a kind of steel truss girder as described 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 as concrete box girder construction.
3. the short side that a kind of steel truss girder as described in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that:Institute It states main span steel truss girder main truss and includes top boom, lower boom and web member, pass through more 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 altogether there are one connecting fulcrum, N is more than or equal to 2.
5. the short side that a kind of steel truss girder as described 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 whole.
6. the short side that a kind of steel truss girder as described in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that:Institute It states main bridge bridge tower to be arranged on cushion cap, be rigidly connected with cushion cap, using thin-walled hollow section.
7. the short side that a kind of steel truss girder as described 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 bridge towers.
8. the short side that a kind of steel truss girder as described in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that:Institute It states toughened internal stress both ends and connects end bay beams of concrete and main span steel truss girder, end bay beams of concrete, main span steel truss girder and steel respectively The girder system of full-bridge is collectively formed in mixed adapter section.
9. the short side that a kind of steel truss girder as described in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that:Institute It states end bay beams of concrete and the across footpath ratio of main span steel truss girder is less than 0.3.
10. the short side that a kind of steel truss girder as described in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that: Auxiliary pier and abutment pier are provided at the end bay beams of concrete.
11. the short side that a kind of steel truss girder as described in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that: 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 extended surface.
12. the short side that a kind of steel truss girder as described in claim 1 is mixed with beams of concrete is across Cable-Stayed Bridge Structure, it is characterized in that: Described suspension cable one end is connect with main bridge bridge tower upper king-post strut, and the other end is connect with end bay concrete girder or main span steel truss girder.
CN201720383898.4U 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 Active CN207552905U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968160A (en) * 2017-04-12 2017-07-21 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968160A (en) * 2017-04-12 2017-07-21 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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