Arch combined system bridge with stable structure

Abstract

The utility model discloses an arch combination system bridge with a stable structure, and relates to the technical field of bridges, the arch combination system bridge comprises a plurality of piers, the plurality of piers are equidistantly arranged along the same straight line, the upper part of each pier is provided with an extension platform, and a plurality of customized beam frames are lapped between the adjacent extension platforms. A plurality of bearing rods are arranged between the customized beam frames in a penetrating mode, customized arched beams are fixedly connected between the farthest ends of the adjacent bridge piers, customized side protection plates are arranged on the two sides of the crossed portion of the adjacent customized arched beams, and the two customized side protection plates are fixed through screws; connecting slings are connected between the customized arched beams and the bearing rods below the customized arched beams, a plurality of bridge piers which are linearly arranged at equal intervals are built on a riverbed, extension platforms and inclined supporting bodies are integrally cast at the ends of the bridge piers, and after casting is completed, customized beam frames are in lap joint between prefabricated grooves of the adjacent extension platforms; and the extension platforms can be sequentially connected in series.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to an arch composite system bridge with stable structure. Background Art

[0002] An arch bridge is a bridge with a semi-circular convex arc. The main materials are masonry and reinforced concrete. The applicable range depends on the materials. The span ranges from dozens of meters to more than three hundred meters. The largest-span reinforced concrete arch bridge in China is 170 meters. The arch rib is the main load-bearing member. The force-bearing characteristics are that the arch rib bears pressure and there is a horizontal thrust at the support. While in an ordinary bridge, the area where the vehicle is located is under pressure. In an arch bridge, the surrounding areas are all under force. In a suspension arch bridge, there is also the force of the cable in addition to its own force. Therefore, the arch bridge is the bridge with the most reasonable force-bearing. At the same time, the cost of processing building materials is low, but it can only resist compression and not tension. A reasonable arch ring structure of the arch bridge only bears pressure and not tension, and the processing building materials can exert the maximum mechanical properties. The load on the bridge is transmitted through the arch ring to the arch seat, and the arch seat is generally a large-volume gravity structure to bear the thrust transmitted by the arch ring;

[0003] Chinese Patent Publication No. CN201933395U discloses a beam-arch composite bridge without a middle cross beam in the bridge deck system. It eliminates the traditional middle cross beam and directly replaces it with a horizontally placed hollow slab. In this way, the web in the hollow slab not only replaces the original middle cross beam but also plays a role in transverse connection, and at the same time, the elevation of the bridge deck system is minimized, saving materials. In addition to saving some concrete and steel bars by itself, the prestressed steel tendons in the beamless bridge deck system can also act as part of the tie rod, reducing the amount of tie rod prestressed steel bars; moreover, the beamless bridge deck system has a large deck stiffness and a long maintenance period, with obvious economic benefits;

[0004] Chinese Patent Publication No. CN210507099U discloses a long-span wide-beam arch composite system bridge. Its main beam adopts a combined beam body composed of two longitudinal main beams and diaphragms. Each main arch is paired with a main span beam segment to form a relatively independent beam-arch composite structure, which can effectively meet the actual needs of beam-arch composite system bridges with different widths and different spans. At the same time, the structure is stable and reliable, and can effectively solve the problem of mid-span deflection diseases existing in wide-span long-span bridges under long-term load action;

[0005] In the above technologies, the forces of each arch ring are all transmitted to the pier columns at their ends, and the force conduction effect between the arch rings is poor, which limits the integrity and stability of the arch composite system bridge. Moreover, the bridge body of the traditional concrete bridge is heavy in mass and difficult to construct. Therefore, the utility model provides an arch composite system bridge with stable structure to solve the above problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide an arch composite system bridge with stable structure, so as to solve the problems in the above-mentioned background technology that in the traditional arch composite system bridge, the forces of each arch ring are transmitted to the pier columns at their ends, and the force conduction effect between the arch rings is poor, which limits the integrity and stability of the arch composite system bridge, and the bridge body of the traditional concrete bridge is heavy in mass and difficult to construct.

[0007] To achieve the above purpose, the solution of the present utility model to the above technical problems is as follows:

[0008] An arch composite system bridge with stable structure includes bridge piers. There are multiple bridge piers, and the multiple bridge piers are arranged at equal intervals along the same straight line. Extension platforms are provided on the upper parts of the bridge piers. A plurality of customized beam frames are lapped between adjacent extension platforms. A plurality of load-bearing rods are arranged through between the customized beam frames. Among them, a customized arched beam is fixedly connected between the outermost ends of adjacent bridge piers. Customized side guards are provided on both sides of the intersection part of adjacent customized arched beams. The two customized side guards are fixed by screws, and connecting suspension cables are connected between the customized arched beam and each load-bearing rod below it.

[0009] As a further scheme of the present utility model, a tension-bearing connecting rod is arranged through between two opposite customized arched beams, and nuts are threadedly connected to both ends of the tension-bearing connecting rod.

[0010] As a further scheme of the present utility model, assembly plates are fixedly connected to the lower sides of both ends of the customized arched beam, and the assembly plates and the extension platforms are fixedly connected by expansion bolts.

[0011] As a further scheme of the present utility model, the bridge pier and the extension platform are cast into an integral structure, and a plurality of diagonal braces are arranged between the bridge pier and the extension platform.

[0012] As a further scheme of the present utility model, clamping groove structures adapted to the intersection part structures of adjacent customized arched beams are provided on the adjacent sides of the two customized side guards.

[0013] As a further scheme of the present utility model, a plurality of precast grooves are provided on the upper side of the extension platform, and the precast grooves are adapted to the structures of the customized beam frames.

[0014] As a further scheme of the present utility model, the cross section of the customized beam frame is in a "concave" shape structure, and the ends of the customized beam frame and the adjacent extension platforms are fixedly connected by expansion bolts.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The supporting structure applicable to the bridge pile foundation on the steep slopes in mountainous areas constructs a plurality of piers arranged at equal intervals along a straight line on the riverbed. The end parts of the piers are integrally cast with extended platforms and inclined braces. After casting, a customized beam frame is lapped between the precast grooves of adjacent extended platforms, which can connect the extended platforms in series in sequence, thereby forming a bridge deck frame. Relying on the bridge deck frame to pour the road surface can form a bridge deck structure;

[0017] 2. The supporting structure applicable to the bridge pile foundation on the steep slopes in mountainous areas fixes the customized arched beam to the adjacent extended platforms through expansion bolts. On both sides of the intersection part of adjacent customized arched beams, a customized side guard plate is placed on each side. After passing the double-headed bolts through the two customized side guard plates and tightening the nuts, the adjacent customized arched beams can be clamped, which can prevent the change of the included angle between the two customized arched beams, enabling the customized arched beams to jointly bear the load, and then uniformly conducting the bearing capacity to each pier, greatly improving the integrity of the bridge;

[0018] 3. The supporting structure applicable to the bridge pile foundation on the steep slopes in mountainous areas inserts load-bearing rods between the customized beam frames before pouring the bridge deck concrete, and tractionally connects the connecting suspension cables between the customized arched beams and the ends of each load-bearing rod, which can play a role in lifting the load-bearing rods and the customized beam frames, ensuring the structural stability of the span part of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0020] Figure 1 It is a side view of an arch composite system bridge with stable structure of the present utility model;

[0021] Figure 2 It is a front sectional view of an arch composite system bridge with stable structure of the present utility model;

[0022] Figure 3 It is a structural diagram of the customized side guard plate in an arch composite system bridge with stable structure of the present utility model;

[0023] Figure 4 It is an installation schematic diagram of the customized beam frame in an arch composite system bridge with stable structure of the present utility model;

[0024] Figure 5 It is an enlarged structural view of part A in an arch composite system bridge with stable structure of the present utility model Figure 2 in the appended drawings;

[0025] Figure 6 It is an enlarged structural view of part B in an arch composite system bridge with stable structure of the present utility model Figure 2 in the appended drawings.

[0026] In the attached drawings, the list of components represented by each label is as follows: 1. Pier; 11. Extended platform; 12. Diagonal brace; 13. Prefabricated groove; 2. Customized beam frame; 3. Load-bearing rod; 4. Customized arched beam; 41. Tensile connecting rod; 42. Assembly plate; 5. Customized side guard plate; 6. Connecting sling. Detailed implementation mode

[0027] The following further describes the present utility model in conjunction with embodiments.

[0028] Please refer to Figures 1-6 , the present utility model provides an arch composite system bridge with stable structure, including a pier 1. A plurality of piers 1 are provided, and the plurality of piers 1 are arranged at equal intervals along the same straight line. An extended platform 11 is provided on the upper part of each pier 1. The pier 1 and the extended platform 11 are cast into an integral structure, and a plurality of diagonal braces 12 are provided between the pier 1 and the extended platform 11;

[0029] Specifically, a right-angle included angle is formed between the pier 1 and the extended platform 11. The diagonal brace 12 is connected between the two side edges of the right-angle included angle, which plays a role in supporting the edge of the extended platform 11 and ensures the stability of the extended platform 11. It is worth noting that the pier 1, the extended platform 11 and the diagonal brace 12 are all made of reinforced concrete structure. The bottom of the pier 1 extends into the riverbed and is connected with a pile foundation, which fully ensures the stability of the bridge.

[0030] Furthermore, a plurality of prefabricated grooves 13 are provided on the upper side of the extended platform 11, and the prefabricated grooves 13 are adapted to the structure of the customized beam frame 2;

[0031] Specifically, by embedding the customized beam frame 2 into the prefabricated groove 13, the left and right positions of the customized beam frame 2 can be limited, and the distance between adjacent customized beam frames 2 is certain. After the road surface is poured, the customized beam frame 2 can play a role in dispersing the load and can stably support the poured road surface.

[0032] Furthermore, the cross-section of the customized beam frame 2 is in a "concave" shape structure, and the ends of the customized beam frame 2 are fixedly connected to the adjacent extended platforms 11 through expansion bolts;

[0033] Specifically, a plurality of assembly holes are provided at both ends of the customized beam frame 2. Drilling holes are made on the extended platform 11 based on the assembly holes. After the expansion bolts pass through the assembly holes and are embedded into the drilling holes, the customized beam frame 2 can be assembled with the extended platform 11 into an integral structure, so that the customized beam frame 2 will not be displaced and the structure is stable.

[0034] Furthermore, a plurality of customized beam frames 2 are lapped between adjacent extended platforms 11, and a plurality of load-bearing rods 3 are arranged through the customized beam frames 2;

[0035] Specifically, the load-bearing capacity and range of a single customized beam frame 2 are limited. Multiple load-bearing rods 3 can successively connect each customized beam frame 2 in series to form a grid-shaped support structure, dispersing stress to each customized beam frame 2.

[0036] Furthermore, a customized arched beam 4 is fixedly connected between the outermost ends of adjacent piers 1;

[0037] Specifically, adjacent customized arched beams 4 are placed in a staggered manner, capable of forming an intersection part between adjacent customized arched beams 4. Connecting the intersection parts of the customized arched beams 4 can connect multiple customized arched beams 4 in series to jointly bear the load.

[0038] Furthermore, assembly plates 42 are fixedly connected to the lower sides of both ends of the customized arched beam 4, and the assembly plates 42 are fixedly connected to the extension platform 11 through expansion bolts;

[0039] Specifically, at least one assembly hole is opened on the assembly plate 42. Drilling holes are opened on the extension platform 11 based on the assembly holes. After passing the expansion bolts through the assembly holes and embedding them in the drilling holes, the customized arched beam 4 can be connected to the extension platform 11 into an integrated structure.

[0040] Furthermore, customized side guard plates 5 are provided on both sides of the intersection part of adjacent customized arched beams 4, and engaging groove structures adapted to the structure of the intersection part of adjacent customized arched beams 4 are opened on the adjacent sides of the two customized side guard plates 5;

[0041] Specifically, the engaging groove structure is in an "X" shape, capable of limiting the customized arched beam 4. When one of the customized arched beams 4 is stressed, the stress is conducted to the other customized arched beam 4 through the customized side guard plate 5, playing a role in strengthening the integrity and stability of the arch combination system bridge.

[0042] Furthermore, the two customized side guard plates 5 are fixed by screws;

[0043] Specifically, at least two connection holes are opened at the edge of the customized side guard plate 5. After passing the double-headed bolts through the connection holes of the two customized side guard plates 5 and tightening the nuts, the adjacent customized arched beams 4 can be clamped, preventing the angle between the two customized arched beams 4 from changing, enabling the customized arched beams 4 to jointly bear the load, and further evenly conducting the bearing capacity to each pier 1, greatly improving the integrity of the bridge.

[0044] Furthermore, connection slings 6 are connected between the customized arched beam 4 and each load-bearing rod 3 below it;

[0045] Specifically, the connection slings 6 are traction-connected between the customized arched beam 4 and the ends of each load-bearing rod 3, which can play a role in lifting the load-bearing rod 3 and the customized beam frame 2, ensuring the structural stability of the span part of the bridge.

[0046] Furthermore, a tension-bearing connecting rod 41 is disposed through between two opposite customized arched beams 4, and nuts are threadedly connected to both ends of the tension-bearing connecting rod 41;

[0047] Specifically, through holes are formed in the customized arched beam 4. First, the tension-bearing connecting rod 41 is passed through the two through holes on the same straight line of displacement, and then the two nuts are respectively threadedly connected to the external threads at both ends of the tension-bearing connecting rod 41, which can play a role in connecting the customized arched beams 4 on both sides of the same extension platform 11.

[0048] Working principle: During the construction of the arch combination system bridge with stable structure, a plurality of bridge piers 1 arranged at equal intervals along a straight line are built on the riverbed. The ends of the bridge piers 1 are integrally cast with extension platforms 11 and diagonal braces 12. After pouring is completed, a customized beam frame 2 is lapped between the prefabricated grooves 13 of adjacent extension platforms 11, and load-bearing rods 3 are inserted between the customized beam frames 2. Then, the customized arched beams 4 are screwed and fixed between adjacent extension platforms 11 through expansion bolts. A customized side guard plate 5 is placed on each side of the intersection of adjacent customized arched beams 4. After passing the double-headed bolts through the two customized side guard plates 5 and tightening the nuts, the adjacent customized arched beams 4 can be clamped, which can prevent the angle between the two customized arched beams 4 from changing, enabling the customized arched beams 4 to jointly bear the load, and then uniformly conducting the bearing capacity to each bridge pier 1, greatly improving the integrity of the bridge. Finally, the connecting sling 6 is traction-connected between the customized arched beam 4 and the ends of each load-bearing rod 3, which can play a role in lifting the load-bearing rod 3 and the customized beam frame 2, ensuring the structural stability of the span part of the bridge.

Claims

1. A structurally stable arch composite bridge, comprising a pier (1), wherein a plurality of piers (1) are provided, and the plurality of piers (1) are arranged equidistantly along the same straight line, characterized in that: The upper part of each bridge pier (1) is provided with an extension platform (11), and a plurality of customized beam frames (2) are overlapped between adjacent extension platforms (11), and a plurality of load-bearing rods (3) are arranged through the customized beam frames (2), wherein a customized arched beam (4) is fixedly connected between the farthest ends of adjacent bridge piers (1), and customized side guard plates (5) are provided on both sides of the intersection of adjacent customized arched beams (4), and the two customized side guard plates (5) are fixed with screws, and connecting slings (6) are connected between the customized arched beam (4) and each load-bearing rod (3) thereunder.

2. The structurally stable arch combination system bridge according to claim 1, characterized in that: A tension-bearing connecting rod (41) is provided between the two opposite custom-made arched beams (4), and nuts are threadedly connected at both ends of the tension-bearing connecting rod (41).

3. The structurally stable arch combination system bridge according to claim 1, characterized in that: The lower sides of both ends of the customized arched beam (4) are fixedly connected with assembly plates (42), and the assembly plates (42) are fixed to the extension platform (11) by expansion bolts.

4. The structurally stable arch combination system bridge according to claim 1, characterized in that: The bridge pier (1) and the extension platform (11) are cast as an integrated structure, and a plurality of diagonal braces (12) are provided between the bridge pier (1) and the extension platform (11).

5. The structurally stable arch combination system bridge according to claim 1, characterized in that: Adjacent sides of the two customized side guard plates (5) are provided with a slot structure adapted to the structure of the intersection of the adjacent customized arched beams (4).

6. The structurally stable arch combination system bridge according to claim 1, characterized in that: A plurality of prefabricated grooves (13) are arranged on the upper side of the extension platform (11), and the prefabricated grooves (13) are adapted to the structure of the customized beam frame (2).

7. The structurally stable arch combination system bridge according to claim 1, characterized in that: The cross section of the customized beam frame (2) is in a "concave"-shaped structure, and the ends of the customized beam frame (2) are connected and fixed to adjacent extension platforms (11) via expansion bolts.

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