CN216006578U

CN216006578U - Umbrella-shaped cable-stayed bridge

Info

Publication number: CN216006578U
Application number: CN202122250300.3U
Authority: CN
Inventors: 王大千; 张富国; 王海东; 李志强; 俞双
Original assignee: China Northeast Municipal Engineering Design & Research Institute Co ltd
Current assignee: China Northeast Municipal Engineering Design & Research Institute Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-03-11
Anticipated expiration: 2031-09-16

Abstract

The utility model provides an umbelliform cable-stay bridge, belong to the building field, including superstructure and substructure, superstructure is including the pylon, suspension cable and bridge, the pylon main part is the columnar structure, the bridge main part is the helix structure, be connected with the suspension cable between pylon and the bridge, superstructure is umbelliform structure, substructure includes the cushion cap, Y shape mound and pile foundation, Y shape mound has more than two, the pile foundation has a plurality ofly, the cushion cap has a plurality ofly and sets up respectively between Y shape mound and pile foundation and between pylon and pile foundation, superstructure main part is umbelliform structure, the integral structure is integrative pleasing to the eye. The umbrella-shaped structure enables the usage amount of the stay cable to be greatly reduced and the stay cable to be fixed more stably, and the single tower can realize three spans. The spiral structure is innovatively designed, so that the attractiveness of the cable-stayed bridge is greatly improved, meanwhile, the occupied area of two sides of the river bank is small, and a new choice is provided for a flyover system in a complex terrain and a city.

Description

Umbrella-shaped cable-stayed bridge

Technical Field

The utility model belongs to the building field, concretely relates to umbelliform cable-stay bridge.

Background

The cable-stayed bridge mainly comprises a bridge tower, a bridge, a stay cable and the like, the cable-stayed bridge is a bridge with a main beam directly pulled on the bridge tower by a plurality of stay cables, and the cable-stayed bridge is a structural system formed by combining a pressure-bearing tower, the pulled cable and a bending-bearing beam body. It can be seen as a multi-span elastically supported continuous beam with guy cables instead of buttresses. The cable-stayed bridge structure can reduce the bending moment in the beam body, reduce the building height, lighten the structural weight and save materials. The cable-stayed bridge has large span and beautiful shape and is widely applied to municipal traffic and various trunk traffic.

The common cable-stayed bridge is a straight one-way traffic mode, the spiritual life of people is more and more abundant, the combination of the isotropy and the aesthetic property of the cable-stayed bridge is more and more important, two basic requirements are necessarily coordinated, and the common cable-stayed bridge cannot be considered.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide an umbrella-shaped cable-stayed bridge.

For solving the technical problem, the utility model discloses an superstructure and substructure, superstructure is including bridge tower, suspension cable and bridge, the bridge tower main part is the columnar structure, the bridge main part is the helix structure, the bridge tower with be connected with between the bridge the suspension cable, superstructure is umbelliform structure, substructure includes cushion cap, Y shape mound and pile foundation, Y shape mound has more than two, the pile foundation has a plurality ofly, the cushion cap has a plurality ofly and sets up respectively Y shape mound with between the pile foundation and the bridge tower with between the pile foundation.

The bridge tower comprises a tower crown, a steel tower section, a steel-concrete combined section and a concrete section, wherein the tower crown is arranged above the steel tower section, the steel tower section is arranged above the steel-concrete combined section, the steel-concrete combined section is connected with the concrete section through a steel beam, and the concrete section is fixed on the bearing platform.

Be provided with the tower end otic placode on the steel tower section, the tower end otic placode with the suspension cable is connected, the tower end otic placode has a plurality ofly and divide into three groups, every group the tower end otic placode has more than two and sets up on same horizontal plane, different groups the tower end otic placode sets up on the not co-altitude of steel tower section.

The steel-concrete combined section is characterized in that a partition plate is arranged at the upper end of the steel-concrete combined section, a through hole is formed in the partition plate, the steel bundle penetrates through the through hole, and one end of the steel bundle is clamped on the upper top surface of the partition plate.

The steel bundle has a plurality ofly, the steel bundle passes steel-concrete combined section and the concrete section, steel bundle one end is fixed on the baffle and other end fixed connection is on the cushion cap.

The stay cable comprises a cable body, a tower end anchor, a beam end anchor, an adjusting mechanism, fork lugs and a sheath, wherein the two ends of the cable body are respectively arranged on the tower end anchor and the beam end anchor, the beam end anchor is further connected with the adjusting mechanism, the adjusting mechanism and the tower end anchor are respectively connected with the fork lugs, and the sheath is wrapped outside the cable body.

The adjusting mechanism comprises a connecting sleeve, an adjusting rod and an adjusting sleeve, the connecting sleeve is fixedly connected with the beam end anchor, one end of the adjusting rod is fixedly connected with the connecting sleeve and the other end of the connecting sleeve are matched with the adjusting sleeve, and the adjusting sleeve is further connected with a fork lug.

The bridge includes girder and diaphragm, the girder has a plurality ofly, and is a plurality of the helix structure is constituteed to the girder, the diaphragm sets up two between the girder.

And the main beam is provided with a beam end ear plate.

The fork lugs are respectively matched with the tower end lug plate and the beam end lug plate and are connected through pin shafts.

The utility model has the advantages that:

compared with the prior art, the upper structure main body of the cable-stayed bridge is of an umbrella-shaped structure, and the integral structure is attractive; the umbrella-shaped structure greatly reduces the usage amount of the stay cable and ensures that the stay cable is more stably fixed, and three spans can be realized by a single tower; the spiral structure is innovatively designed, so that the attractiveness of the cable-stayed bridge is greatly improved, meanwhile, the occupied area of two sides of the river bank is small, and a new choice is provided for a flyover system in a complex terrain and a city.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of an overall structure of a preferred embodiment of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic structural view of a bridge tower according to the present invention;

FIG. 4 is a schematic view of the structure of the part A of the present invention;

FIG. 5 is a schematic structural view of the reinforced concrete joint section of the present invention;

FIG. 6 is a schematic cross-sectional structure of the present invention;

FIG. 7 is a schematic view of the structure of the part B of the present invention;

FIG. 8 is a schematic view of the structure of the Y-shaped pier of the present invention;

FIG. 9 is a schematic view of the structure of the Y-shaped pier of the present invention;

fig. 10 is a schematic view of the structure of the stay cable of the present invention;

fig. 11 is a schematic view of the structure of the stay cable of the present invention;

in the figure:

1. a bridge tower; 11. a tower crown; 12. a steel tower section; 13. a steel-concrete combined section; 14. a concrete section; 15. steel bundles; 16. a tower end lug plate; 17. a partition plate;

2. a stay cable; 21. a cable body; 22. a tower end anchor; 23. beam-end anchors; 25. a fork ear; 26. a sheath;

24. an adjustment mechanism; 241. a connecting sleeve; 242. adjusting a rod; 243. an adjustment sleeve;

3. a bridge; 31. a main beam; 32. a transverse plate; 33. a beam-end ear panel; 34. a main beam centerline;

4. a bearing platform; 5. y-shaped piers; 6. a pile foundation; 7. a railing; 8. a waterproof plug; 9. the horizon line.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to solve the technical problem, the utility model discloses make following design:

please refer to fig. 1 and 2, including superstructure and substructure, superstructure is including bridge tower 1, suspension cable 2 and bridge 3, the main part of bridge tower 1 is the columnar structure, the main part of bridge 3 is the helical line structure, be connected with suspension cable 2 between bridge tower 1 and the bridge 3, superstructure is umbelliform structure, substructure includes cushion cap 4, Y shape mound 5 and pile foundation 6, Y shape mound 5 has more than two, pile foundation 6 has a plurality ofly, cushion cap 4 has a plurality ofly and sets up respectively between Y shape mound 5 and pile foundation 6 and between bridge tower 1 and pile foundation 6, cushion cap 4 and pile foundation 6 set up below horizon line 9, it is waterproof to be provided with waterproof plug 8 between pile foundation 6 and the Y shape mound 5 simultaneously and be used for waterproofly.

Referring to fig. 3, 4 and 5, the bridge tower 1 includes a tower crown 11, a steel tower section 12, a steel-concrete combined section 13 and a concrete section 14, the tower crown 11 is disposed above the steel tower section 12, the steel tower section 12 is disposed above the steel-concrete combined section 13, the steel-concrete combined section 13 is connected with the concrete section 14 through a steel bundle 15, and the concrete section 14 is fixed on the bearing platform 4.

The steel tower section 12 is provided with a tower end ear plate 16, the tower end ear plate 16 is connected with the stay cable 2, the tower end ear plates 16 are multiple and divided into three groups, and each group of tower end ear plates 16 are arranged on different heights of the steel tower section 12.

The upper end of the steel-concrete combining section 13 is provided with a partition plate 17, a through hole is formed in the partition plate 17, the steel bundle 15 penetrates through the through hole, and one end of the steel bundle 15 is clamped on the upper top surface of the partition plate 17.

The steel bundle 15 is provided with a plurality of steel bundles, the steel bundle 15 penetrates through the steel-concrete combining section 13 and the concrete section 14, one end of the steel bundle 15 is fixed on the partition board 17, and the other end of the steel bundle is fixedly connected to the bearing platform 4.

In this embodiment, referring to fig. 6, 7, 8 and 9, the bridge tower 1 is a cylindrical structure with a total height of 41m, wherein 8m of the tower bottom is a concrete tower column, 8m to 12m of the tower bottom are steel-concrete combined

sections

13, 12 to 35m are steel tower sections 12, and 35m to 41m are portions of a tower crown 11.

In the present embodiment, the diameter of the circular cross-section of the crown 11 portion is 0.3m to 1.0m, and the wall thickness is 20 mm; the circular diameter of the cross section of the steel tower section 12 and the steel-concrete combined section 13 is 1.0-2.08 m, and the wall thickness is 30 mm. The cross-sectional circular diameter of the concrete section 14 portion is 2.08m to 2.4 m. The inner wall of the steel tower adopts I-shaped stiffening ribs, and the shape and the size are shown in the drawing in detail.

When the device is used, all the sections are prefabricated in a factory and are pre-assembled, the sections are transported to the site after being completed, the sections are hoisted from the root to the top of the tower, and the sections are hoisted in place and then are integrally formed in a butt fusion welding mode.

Referring to fig. 10 and 11, the stay cable 2 includes a cable body 21, a tower-end anchor 22, a beam-end anchor 23, an adjusting mechanism 24, a fork 25 and a sheath 26, the two ends of the cable body 21 are respectively provided with the tower-end anchor 22 and the beam-end anchor 23, the beam-end anchor 23 is further connected with the adjusting mechanism 24, the adjusting mechanism 24 and the tower-end anchor 22 are both connected with the fork 25, and the sheath 26 is wrapped outside the cable body 21.

Preferably, the cable body 21 is a high-strength galvanized aluminum alloy steel cable with a double-layer high-density polyethylene sheath 26. The anchors at the upper and lower ends of the cable body 21 are all cold cast anchors. The steel wires are parallel, straight and gathered together and twisted and lapped by large pitch, and the outside of the steel wires is extruded and wrapped with double-sheath high-density polyethylene, the steel wires used by the cable body 21 are 5mm galvanized high-strength low-relaxation steel wires, the tensile standard strength is 1670MPa, and the steel wires have no joints; the galvanized layer of the steel wire is continuous, smooth, uniform and compact, and the galvanized weight per unit area is not less than 0.3kg per square meter.

The performance of the sheath 26 wrapped on the cable body 21 meets the requirements of high-density polyethylene sheath 26 material for bridge 3 cable (CJ/T297). The polyethylene material needs to be stable in chemical property, and cannot be aged or softened under the expected exposure temperature and service life of the cable body 21; the adhesion force between the material and the steel wire is such that the protective layer and the steel wire do not move relatively.

During construction, the stay cable 2 components are all manufactured in a factory, and are integrally installed and tensioned on site.

Furthermore, in order to reduce the wind and rain vibration problem of the cable-stayed bridge, a damping device is arranged between the stay cables.

The adjusting mechanism 24 includes a connecting sleeve 241, an adjusting rod 242 and an adjusting sleeve 243, the connecting sleeve 241 is fixedly connected to the beam end anchor 23, one end of the adjusting rod 242 is fixedly connected to the connecting sleeve 241, the other end of the adjusting rod 242 is matched with the adjusting sleeve 243, and the adjusting sleeve 243 is further connected to a fork 25.

Referring to fig. 10, the bridge 3 includes a plurality of girders 31 and transverse plates 32, the central line 34 of the girders is a spiral line structure, and the transverse plates 32 are disposed between the two girders 31. The main beam 31 is provided with a beam end ear plate 33.

Preferably, the main beam 31 is a three-span continuous steel box beam, the cross section of the single-box three-chamber inclined web plate is 3.5m wide, and the beam height is 1.0 m; the thicknesses of the top plate, the bottom plate and the web plate of the steel box girder are 12 mm. The I-shaped stiffening ribs are longitudinally adopted, the height of each stiffening rib is 120mm, and the thickness of each stiffening rib is 12 mm.

Preferably, the transverse plate 32 is a solid web type transverse plate 32, the standard section arrangement distance is 2m, and the thickness of the transverse plate 32 is 12 mm; the thickness of the transverse plate 32 at the fulcrum is reinforced to 16 mm.

The bridge 3 is prefabricated in sections in the factory during installation. And after the prefabrication of each segment in a factory is finished, the segments are transported to the site, the segments are hoisted from the supporting points to the midspan, and the segments are hoisted in place and then are integrally formed in a butt fusion penetration welding mode.

Referring to fig. 11, the fork lug 25 is respectively engaged with the tower end lug plate 16 and the beam end lug plate 33, and the insertion lug is connected with the lug plates through a pin.

Further, referring to fig. 6, the main beam 31 is further provided with a stainless steel rail 7, and the concrete asphalt bridge deck is paved on the main beam 31.

And a drainage hole is arranged on the transverse low slope side of the bridge floor. The bridge floor drain pipe and the water inlet are of large sizes, so that rainwater can be drained rapidly, and water accumulation on the bridge floor is prevented.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an umbelliform cable-stay bridge, a serial communication port, including superstructure and substructure, superstructure is umbelliform structure, superstructure is including pylon (1), suspension cable (2) and bridge (3), pylon (1) main part is the columnar structure, bridge (3) main part is the helix structure, pylon (1) with be connected with between bridge (3) suspension cable (2), substructure includes cushion cap (4), Y shape mound (5) and pile foundation (6), Y shape mound (5) have more than two, pile foundation (6) have a plurality ofly, cushion cap (4) have a plurality ofly and set up respectively Y shape mound (5) with between pile foundation (6) and pylon (1) with between pile foundation (6).

2. The umbrella-shaped cable-stayed bridge according to claim 1, wherein the bridge tower (1) comprises a tower crown (11), a steel tower section (12), a steel-concrete combined section (13) and a concrete section (14), the tower crown (11) is arranged above the steel tower section (12), the steel tower section (12) is arranged above the steel-concrete combined section (13), the steel-concrete combined section (13) is connected with the concrete section (14) through a steel bundle (15), and the concrete section (14) is fixed on the bearing platform (4).

3. The umbrella-shaped cable-stayed bridge according to claim 2, wherein the steel tower section (12) is provided with a tower end ear plate (16), the tower end ear plate (16) is connected with the stay cable (2), the tower end ear plate (16) is provided with a plurality of groups and is divided into three groups, each group of the tower end ear plate (16) is provided with more than two groups and is arranged on the same horizontal plane, and the tower end ear plates (16) of different groups are arranged on different heights of the steel tower section (12).

4. The umbrella-shaped cable-stayed bridge according to claim 3, characterized in that a partition plate (17) is arranged at the upper end of the reinforced concrete combining section (13), a through hole is formed on the partition plate (17), the steel bundle (15) passes through the through hole, and one end of the steel bundle (15) is clamped on the upper top surface of the partition plate (17).

5. An umbrella-shaped cable-stayed bridge according to claim 4, characterized in that a plurality of steel bundles (15) are provided, the steel bundles (15) pass through the steel-concrete joint section (13) and the concrete section (14), one end of each steel bundle (15) is fixed on the partition plate (17) and the other end of each steel bundle is fixedly connected to the bearing platform (4).

6. The umbrella-shaped cable-stayed bridge according to claim 2, wherein the stay cable (2) comprises a cable body (21), a tower-end anchor (22), a beam-end anchor (23), an adjusting mechanism (24), a fork lug (25) and a sheath (26), the two ends of the cable body (21) are respectively provided with the tower-end anchor (22) and the beam-end anchor (23), the beam-end anchor (23) is further connected with the adjusting mechanism (24), the adjusting mechanism (24) and the tower-end anchor (22) are respectively connected with the fork lug (25), and the sheath (26) is wrapped outside the cable body (21).

7. The umbrella-shaped cable-stayed bridge according to claim 6, characterized in that the adjusting mechanism (24) comprises a connecting sleeve (241), an adjusting rod (242) and an adjusting sleeve (243), the connecting sleeve (241) is fixedly connected with the beam-end anchor (23), one end of the adjusting rod (242) is fixedly connected with the connecting sleeve (241) and the other end of the adjusting rod is matched with the adjusting sleeve (243), and the adjusting sleeve (243) is further connected with the fork lug (25).

8. An umbrella-shaped cable-stayed bridge according to claim 6, characterized in that the bridge (3) comprises a plurality of main beams (31) and a transverse plate (32), the plurality of main beams (31) form a spiral structure, and the transverse plate (32) is arranged between the two main beams (31).

9. An umbrella cable-stayed bridge according to claim 8, characterized in that the main beam (31) is provided with beam-end lugs (33).

10. An umbrella cable-stayed bridge according to claim 9, characterized in that the fork lugs (25) are fitted and pin-connected with the tower-end lug plate (16) and the beam-end lug plate (33), respectively.