CN210561669U

CN210561669U - Cable-stayed through-arch cooperation system bridge

Info

Publication number: CN210561669U
Application number: CN201920755719.4U
Authority: CN
Inventors: 王静妤; 袁万城; 党新志; 贺金海
Original assignee: Nanjing Tongjie Bridge Engineering Technology Co ltd
Current assignee: Nanjing Tongjie Bridge Engineering Technology Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-05-19
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a cable-stayed deck-type arch cooperation system bridge, which comprises a cable tower, piers and a girder, wherein the girder is horizontally arranged, the piers are respectively arranged at four corners of the girder, the cable tower is vertically arranged in a groove and connected with the girder, a plurality of stay cables are symmetrically arranged on the cable tower from top to bottom respectively, the other ends of the stay cables are respectively connected with the girder, the vertical central line of the girder is taken as the central line, a main arch is symmetrically arranged at the bottom of the girder, a plurality of stand columns are arranged between the top of the arch body of the main arch and the girder, and the length of the stand columns extending to the side from the vertical central line is gradually decreased; the utility model reduces the axial pressure borne by the girder and enhances the stability of the girder; the pressure load borne by the main arch is reduced, the bending moment and the horizontal thrust at the arch springing are reduced, and the stability of the arch structure is improved; the integral rigidity of the bridge is increased, the wind resistance of the structure is improved, and the cable-stayed bridge and the arch bridge are cooperated to show good stress performance.

Description

Cable-stayed through-arch cooperation system bridge

Technical Field

The utility model relates to a draw formula of bearing to one side and encircle cooperation system bridge belongs to building engineering technical field.

Background

The construction of the cable-stayed bridge begins from the middle of 70 years in the 20 th century in China, particularly in the last 20 years, the cable-stayed bridge is developed abnormally and rapidly, and the number of the constructed cable-stayed bridge is the top of the world. The cable-stayed bridge is a main bridge type of a large-span bridge, and the cable-stayed bridge has reasonable stress, obvious economic advantages, rich structural form, attractive appearance and simple structure in the span diameter range of medium and large bridges with reasonable technical scheme.

The cable-stayed bridge is a combined bridge structure system consisting of 3 basic components of a tower, a beam and a cable, and the gravity of the main beam, the vehicle load and the like are transmitted to the bridge tower through the cable and then transmitted to a foundation through the bridge tower. The stay cable of the cable-stayed bridge is equivalent to that a plurality of elastic supports are added in the main beam span, so that the bending moment in the beam, the size of the beam body and the gravity are reduced, and the spanning capability of the bridge is improved. However, cable-stayed bridges also have problems during use, such as in-plane buckling stability, fatigue failure and wind-induced vibration of the cable, lateral deformation and flutter stability of the main beam, and the like. Wherein, the main girder loses the problem of stability because of receiving great pressure and should focus on. The main beam of the cable-stayed bridge is subjected to axial pre-pressure generated by the horizontal component of the inhaul cable, so that the main beam becomes an eccentric compression component, the stability and the wind resistance of a beam body can be deteriorated due to overlarge axial force, the spanning capability of the bridge is limited, the consumption of materials can be increased by increasing the section size to improve the stability of the main beam, the economic performance of the bridge is deteriorated, and the appearance of the bridge is influenced due to the fact that the main beam is heavy. How to effectively reduce the pressure on the main beam and not increasing the size of the section of the main beam becomes a problem to be solved urgently; the improvement of the structural function requirement of modern bridge design and the research development of a structural system make a cooperative system bridge a possible solution to the problem.

Disclosure of Invention

For solving the not enough of prior art, the utility model provides a draw formula to one side and encircle cooperative system bridge.

The utility model discloses the technical scheme who adopts does:

a cable-stayed deck-type arch cooperation system bridge comprises a cable tower, piers and a girder, wherein the girder is horizontally arranged, the piers are provided with a plurality of the piers, the piers are correspondingly arranged at four corners of the girder respectively, the front end and the rear end of the middle part of the girder are provided with notches respectively, the cable tower is vertically and correspondingly arranged in the notches respectively and is connected with the girder, the bottom of the cable tower and the bottom of the piers are positioned on the same horizontal plane, the cable tower is symmetrically provided with a plurality of stay cables respectively from top to bottom, the other ends of the stay cables are connected with the girder on the same side respectively, the two stay cables which are symmetrically arranged form a V-shaped structure with a downward opening, and the openings of the V-shaped structure are gradually decreased from top to bottom; the main arch is symmetrically arranged at the bottom of the main beam by taking the vertical center line of the main beam as the center line, one end of the main arch is connected with the two cable towers, the other end of the main arch is connected with the bottom of the side end of the main beam, a plurality of upright posts are arranged between the top of the arch body of the main arch and the main beam, and the length of the upright posts extending from the vertical center line to the side surface is gradually reduced.

Preferably, foundation blocks are provided at the bottoms of the cable tower and the pier, respectively.

Furthermore, two ends of the stay cable are respectively connected with the cable tower and the main beam in an anchoring manner.

The beneficial effects of the utility model reside in that:

1. compared with a cable-stayed bridge, the axial pressure borne by the main beam is reduced due to the lower arch structure, the support of the arch upright post provides multi-point elastic support for the main beam, the bending moment of the main beam is reduced, the design size of the cross section of the main beam is reduced, the self weight of the main beam is reduced, and the material consumption of the main beam is reduced.

2. Compared with cable-stayed bridge, the main arch bears partial load from bridge floor, so that the cable force of the stayed cable can be reduced, the auxiliary pier is not needed to be additionally arranged on the other side of the cable tower, the sectional area of the cable tower can be reduced, and the construction cost is reduced.

3. Due to the assistance of the lower arch structure, the bridge load born by the stay cable is reduced, the cable length of the stay cable is shortened, the influence of cable sag is reduced, the cable surface rigidity is improved, and the transverse wind resistance rigidity of the bridge deck is improved.

4. Compared with an arch bridge, partial gravity of the main beam is borne by the stay cables, so that the load transmitted to the main arch by the upright posts is reduced, the stability of the arch structure is improved, the bending moment and the horizontal thrust at the arch foot are reduced, the span of the arch bridge is increased, the main arch is lighter in line shape, and the visual attractiveness of the structure system is improved.

5. The cable tower, the stay cable, the main arch, the upright post and the main beam form a complete main beam tension and compression self-balancing system, the integral rigidity of the system is improved, the requirement of the system on the foundation is reduced, the wind resistance and the stability of the system are improved, and the respective spanning capacity of the cable-stayed bridge and the arch bridge is improved under the same condition.

6. In the construction stage of the bridge, the cable hoisting construction can be carried out by utilizing the cable-stayed bridge cable tower, so that the cost in the construction stage is reduced, and the utilization rate of the structure is improved.

Drawings

FIG. 1 is an elevation view of a cable-stayed deck arch collaboration system bridge;

FIG. 2 is a three-dimensional view of a cable-stayed deck arch collaboration system bridge;

the main reference numerals in the figures have the following meanings:

1. the cable tower comprises a cable tower body 2, bridge piers 3, main beams 4, stay cables 5, main arches 6, upright columns 7 and foundation blocks.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1-2: the embodiment is a cable-stayed deck-arch cooperation system bridge, which comprises a cable tower 1, piers 2 and a girder 3, wherein the girder 3 is horizontally arranged, the piers 2 are provided with a plurality of piers 2 which are respectively and correspondingly arranged at four corners of the girder 3, the front end and the rear end of the middle part of the girder 3 are respectively provided with a notch, the cable tower 1 is respectively and vertically and correspondingly arranged in the notch and connected with the girder 3, the bottom of the cable tower 1 and the bottom of the piers 2 are positioned on the same horizontal plane, the cable tower 1 is respectively and symmetrically provided with a plurality of stay cables 4 from top to bottom, the other ends of the stay cables 4 are respectively connected with the girder 3 on the same side, the two symmetrically arranged stay cables 4 form a V-shaped structure with a downward opening, and the openings of the V-shaped structure are; the vertical center line of the main beam 3 is taken as the center line, main arches 5 are symmetrically arranged at the bottom of the main beam 3, one end of each main arch 5 is connected with the two cable towers 1, the other end of each main arch 5 is connected with the bottom of the side end of the main beam 3, a plurality of upright posts 6 are arranged between the top of the arch body of each main arch 5 and the main beam 3, and the length of the upright posts 6 extending from the vertical center line to the side surface is gradually reduced; foundation blocks 7 are respectively arranged at the bottoms of the cable tower 1 and the bridge pier 2.

In this embodiment, two ends of the stay cable 4 are respectively connected to the cable tower 1 and the main beam 3 by anchoring.

The main beam 3 is connected to the cable tower 1 and the main arch 5 by the stay cables 4 and the upright posts 6 which are distributed along the longitudinal direction, and plays a role of elastic support for the main beam 3, two ends of the stay cables 4 are respectively anchored on the main beam 3 and the cable tower 1, one end of the main arch 5 in the longitudinal direction is rigidly connected with the main beam 3, and one end is fixedly connected with the bottom of the cable tower 1, the bridge pier 2 is supported at two ends of the main beam 3, and the upright posts 6 are vertically supported and fixedly connected on the main arch 5, when in actual application, the pulling force borne by each stay cable 4, the pressure borne by the upright posts 6, the section size, the arrangement distance and the used materials can be designed according to the actual; the materials, the line shapes and the section sizes of the cable tower 1, the bridge piers 2, the main beams 3, the stay cables 4 and the main arches 5 can be selected preferably according to the design requirements, and the full-bridge structural system can be changed according to the actual situation and can be a tower beam fixed connection system, a rigid frame system and the like.

To sum up, the utility model provides a draw formula to one side and encircle cooperation system bridge, this system has reduced the axial pressure that the girder received, has strengthened the stability of girder, has reduced the load that the owner encircleed, reduces the moment of flexure and the horizontal thrust of hunch foot department, has improved the stability of encircleing the structure. Meanwhile, the integral rigidity of the bridge is increased, so that the cable-stayed bridge and the arch bridge act synergistically, respective advantages are exerted, and good stress performance is shown.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a draw formula of holding to one side and encircle cooperative system bridge which characterized in that: comprises a cable tower (1), piers (2) and girders (3), wherein the girders (3) are horizontally arranged, a plurality of piers (2) are arranged, and a plurality of the piers (2) are respectively and correspondingly arranged at the four corners of the girder (3), the front end and the rear end of the middle part of the main beam (3) are respectively provided with a notch, the cable towers (1) are respectively vertically and correspondingly arranged in the notches and connected with the main beam (3), and the bottom of the cable tower (1) and the bottom of the pier (2) are positioned on the same horizontal plane, a plurality of stay cables (4) are symmetrically arranged on the cable tower (1) from top to bottom respectively, and the other ends of the plurality of stay cables (4) are respectively connected with the main beams (3) at the same side, the two symmetrically arranged stay cables (4) form a V-shaped structure with a downward opening, and the openings of the V-shaped structure are gradually decreased from top to bottom; the vertical center line of a main beam (3) is used as the center line, main arches (5) are symmetrically arranged at the bottom of the main beam (3), one end of each main arch (5) is connected with two cable towers (1), the other end of each main arch (5) is connected with the bottom of the side end of the main beam (3), a plurality of upright posts (6) are arranged between the top of an arch body of each main arch (5) and the main beam (3), and the length of the upright posts (6) extending from the vertical center line to the side face is reduced progressively.

2. The cable-stayed deck-arch cooperative system bridge according to claim 1, wherein foundation blocks (7) are respectively arranged at the bottoms of the cable tower (1) and the pier (2).

3. The cable-stayed deck-arch cooperative system bridge according to claim 1, wherein two ends of the stay cable (4) are respectively connected with the cable tower (1) and the main beam (3) in an anchoring manner.