CN210507095U - H-shaped single-tower double-cable-surface prestressed concrete cable-stayed bridge main beam structure - Google Patents
H-shaped single-tower double-cable-surface prestressed concrete cable-stayed bridge main beam structure Download PDFInfo
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- CN210507095U CN210507095U CN201921231519.5U CN201921231519U CN210507095U CN 210507095 U CN210507095 U CN 210507095U CN 201921231519 U CN201921231519 U CN 201921231519U CN 210507095 U CN210507095 U CN 210507095U
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- prestressed concrete
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Abstract
The utility model relates to a cable-stay bridge girder structure, in particular to H type single tower two cable face prestressed concrete cable-stay bridge girder structure. The structure of the steel structure is formed by symmetrically pouring five sections, the sections on two sides are fixedly connected with the main tower, each section comprises a side girder and a girder top plate arranged above the side girder, the top of the girder top plate is provided with a bidirectional cross slope, a crossbeam is erected between the side girders below the girder top plate, each section is provided with a longitudinal prestressed steel beam in each of the side girders and the bridge deck, and each crossbeam is provided with prestressed steel strands. The utility model discloses a two cable face prestressed concrete cable-stay bridge girder structures of H type single tower, its this girder adopt prestressed concrete pi type roof beam rib plate formula cross-section, and the material is economized, the dead weight is light, and the cross bridge is big to the span.
Description
Technical Field
The utility model relates to a cable-stay bridge girder structure, in particular to H type single tower two cable face prestressed concrete cable-stay bridge girder structure.
Background
A cable-stayed bridge is also called a diagonal tension bridge, is a bridge with a main beam directly pulled on a bridge tower by a plurality of guys, and is a structural system formed by combining a pressure-bearing tower, a pulled guy and a bending-bearing beam body. It can be seen as a multi-span elastically supported continuous beam with guy cables instead of buttresses. It can reduce the bending moment in the beam body, reduce the building height, lighten the structural weight and save materials. The cable-stayed bridge mainly comprises a cable tower, a main beam and a stay cable.
The main beam structure of the cable-stayed bridge mainly adopts a concrete structure, a steel structure or a steel-concrete composite structure, and can be divided into a closed section and an open section in the form of the section.
During static calculation, the concrete section can be simulated by adopting a common beam unit, and the result is accurate enough; for the space effect of the section of the steel box girder, a space girder unit with 7 th distortion degree of freedom is preferably used for analysis.
When dynamic analysis (wind resistance and earthquake resistance) is carried out, the influence of a main beam simulation method on the dynamic characteristics of the structure is very large.
The division mode of the main beam units and the nodes is mainly related to the construction method of the main beam, and the nodes are required to be divided at the positions of the connection position of the cross beam, the typical section position, the stay cable anchoring point, the connection position of different materials, the construction joint and the like.
The girder of current cable-stay bridge generally has following not enough:
1. the whole girder generally adopts the monolithic casting, and the quality is big, and the cross-bridge span receives the limitation.
2. The construction is inconvenient.
3. Special anchoring means are required for the stay cables.
4. The lateral stiffness is not good.
Disclosure of Invention
In order to solve the problem of the prior art, the utility model provides a two cable face prestressed concrete cable-stay bridge girder structures of H type single tower, its this girder adopts prestressed concrete pi type roof beam rib formula cross-section, and the material is economized, the dead weight is light, and the cross-bridge is big to the span.
The utility model discloses the technical scheme who adopts as follows:
the utility model provides a two cable face prestressed concrete cable-stay bridge girder structures of H type single tower, is pour by five segmental symmetries and constitutes, and the segmental of both sides concreties with the main tower, and every segmental includes the girder roof that limit girder and limit girder top set up respectively, girder roof top set up two-way cross slope, erect the crossbeam between the limit girder of girder roof below, every segmental all is furnished with vertical prestressing steel bundle in limit girder and decking, the crossbeam be equipped with prestressing steel strand wires.
The top full width of the cross section of the side girder is 26.5m, the end surface height of the cross section is 2.3m, and the center height is 2.565 m.
The top plate of the main beam is 0.32m thick and is provided with a bidirectional 2% cross slope.
The segment lengths are 104.2m, 44.8m, 54.6m, 32.0m and 44.2m, respectively.
And a concrete counterweight section is arranged at the side span position of the side girder.
The basic section form of the main beam is a side main beam, the full width of the top of the section is 26.5m, the height of the end surface of the section is 2.3m, and the height of the center is 2.565 m; the top plate of the main beam is 0.32m thick and is provided with a bidirectional 2% cross slope. The main beam is divided into 5 sections for symmetrical pouring, and the lengths of the sections are 104.2m, 44.8m, 54.6m, 32.0m and 44.2m respectively. The width of each side rib is 3m, 4m and the bottom width is 27m, the basic spacing of the cross beams is 3.9m, 3.65m and 4.25m, and the cross beams are provided with prestressed steel strands. The joint of the main tower and the main beam is fixedly connected, and the main beam and the cross beam are both filled with C55 concrete.
Each section of the main beam is provided with longitudinal prestressed steel beams in the side main beams and the bridge deck, and the design is carried out according to fully prestressed components.
The utility model provides a beneficial effect that technical scheme brought is:
the main girder structure has the advantages that the main girder of the cable-stayed bridge adopts a prestressed concrete pi-shaped girder rib plate type section, the material is saved, the dead weight is light, and the transverse bridge span is large. The double-main-rib section is also called as a double-main beam, and the double-main-rib section has the advantages that the template is simple, the construction is convenient, a special anchoring device is not required to be arranged for the stay cable, and the structural balance is ensured by arranging the concrete counterweight section at the side span position. The transverse beam with higher rigidity is arranged, so that the transverse rigidity of the structure is increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an H-shaped single-tower double-cable-side prestressed concrete cable-stayed bridge main beam structure of the utility model;
fig. 2 is a schematic cross-sectional structure view of a main beam structure of an H-shaped single-tower double-cable-side prestressed concrete cable-stayed bridge of the present invention;
fig. 3 is the utility model discloses a side structure schematic diagram of H type single tower two cable face prestressed concrete cable-stay bridge girder structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example one
As shown in figure 1, an H-shaped single-tower double-cable-side prestressed concrete cable-stayed bridge girder structure is formed by symmetrically pouring five sections 1, the sections 1 on two sides are consolidated with a main tower, as shown in figures 2 and 3, each section 1 comprises a side girder 2 and a girder top plate 3 arranged above the side girder 2, the top of the girder top plate 3 is provided with a bidirectional transverse slope 4, a crossbeam 5 is erected between the side girders 2 below the girder top plate 3, each section 1 is provided with a longitudinal prestressed steel bundle 6 in the side girders 2 and a bridge deck, and the crossbeam 5 is provided with a prestressed steel strand 7.
In the embodiment, the top full width of the section of the side girder 2 is 26.5m, the end surface of the section is 2.3m high, and the center is 2.565m high; the thickness of the girder top plate 3 is 0.32m, and a bidirectional 2% cross slope 4 is arranged. The main beam is divided into 5 sections 1 for symmetrical pouring, and the lengths of the sections 1 are 104.2m, 44.8m, 54.6m, 32.0m and 44.2m respectively. The width of each side rib is three kinds of box-shaped sections with the width of 3m, 4m and the bottom width of 27m, the basic spacing of the cross beams 5 is 3.9m, 3.65m and 4.25m, and the cross beams 5 are provided with prestressed steel strands 7. The joint of the main tower and the main beam is fixedly connected, and the main beam and the cross beam are both filled with C55 concrete.
Each section 1 of the main beam is provided with longitudinal prestressed steel beams 6 in the side main beam and the bridge deck, and the design is carried out according to fully prestressed components.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a two cable face prestressed concrete cable-stay bridge girder structures of H type single tower, is pour by five segmental symmetries and constitutes, and the segmental of both sides concreties with the main tower, and its characterized in that, every segmental include the girder roof that limit girder and limit girder top set up respectively, girder roof top set up two-way cross slope, erect the crossbeam between the limit girder of girder roof below, every segmental all is furnished with vertical prestressing steel bundle in limit girder and decking, the crossbeam be equipped with prestressing steel strand wires.
2. The H-shaped single-tower double-cable-side prestressed concrete cable-stayed bridge girder structure according to claim 1, wherein the cross-sectional top width of the side girder is 26.5m, the cross-sectional end surface height is 2.3m, and the center height is 2.565 m.
3. The H-shaped single-tower double-cable-surface prestressed concrete cable-stayed bridge main beam structure according to claim 1, wherein the thickness of a main beam top plate is 0.32m, and a bidirectional 2% transverse slope is arranged.
4. The main beam structure of an H-shaped single-tower double-cable-side prestressed concrete cable-stayed bridge according to claim 1, wherein the lengths of the sections are 104.2m, 44.8m, 54.6m, 32.0m and 44.2m respectively.
5. The main beam structure of the H-shaped single-tower double-cable-side prestressed concrete cable-stayed bridge according to claim 1, wherein a concrete counterweight section is arranged at the side span position of the side main beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921231519.5U CN210507095U (en) | 2019-07-31 | 2019-07-31 | H-shaped single-tower double-cable-surface prestressed concrete cable-stayed bridge main beam structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921231519.5U CN210507095U (en) | 2019-07-31 | 2019-07-31 | H-shaped single-tower double-cable-surface prestressed concrete cable-stayed bridge main beam structure |
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| CN210507095U true CN210507095U (en) | 2020-05-12 |
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| CN201921231519.5U Expired - Fee Related CN210507095U (en) | 2019-07-31 | 2019-07-31 | H-shaped single-tower double-cable-surface prestressed concrete cable-stayed bridge main beam structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182620A (en) * | 2021-12-31 | 2022-03-15 | 山东省交通规划设计院集团有限公司 | Partial cable-stayed bridge structure system of large cantilever core steel box and construction method |
-
2019
- 2019-07-31 CN CN201921231519.5U patent/CN210507095U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182620A (en) * | 2021-12-31 | 2022-03-15 | 山东省交通规划设计院集团有限公司 | Partial cable-stayed bridge structure system of large cantilever core steel box and construction method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 Termination date: 20210731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |