Aluminum alloy bridge

Abstract

The present invention relates to the technical field of bridge construction, and in particular to an aluminum alloy bridge. An aluminum alloy bridge comprises: a pair of main beam frames, which are arranged in parallel; a first chord, the first chord comprises a first opening structure which at least partially covers two wall surfaces which are arranged opposite to each other on the main beam frame and a first end surface which is arranged between the two wall surfaces, and the first opening structure is sleeved and installed on one end of the main beam frame along the extension direction of the main beam frame; a supporting chassis, which is installed between a pair of main beam frames, the supporting chassis is connected to the first chord and the main beam frame, and a bridge deck is installed on the supporting chassis. Wrap one end of the main beam frame in the first chord, and by enhancing the integrity of the first chord, increase the lateral stiffness of the first chord, increase the stress required for the deformation of the first chord, and reduce the deflection of the first chord when subjected to stress. When the aluminum alloy bridge is subjected to stress, the first chord can limit the displacement and deformation of the aluminum alloy bridge, and enhance the stability of the aluminum alloy bridge.

Description

Technical Field

[0001] The invention relates to the technical field of bridge structures, and in particular to an aluminum alloy bridge. Background Art

[0002] Bridge structures are mainly made of concrete and steel. Concrete materials are cheap, but the structure is large and heavy, and has a short service life; steel structures are relatively light, but steel is prone to rust, and the surface of the steel needs special protection, and long-term maintenance. The cost of later maintenance is very high. The maintenance cost of many projects far exceeds the initial construction cost, and the cost of use is high.

[0003] At present, the concept of environmental protection is being vigorously promoted worldwide. Aluminum alloy materials are an environmentally friendly green building material. They have the advantages of being lightweight, high-strength, corrosion-resistant, easy to process, easy to regenerate, having good landscape effects, being non-magnetic and non-toxic, making them suitable for building aluminum alloy bridges. The aluminum alloy bridge structure system in the prior art is more suitable for bridges with a span of less than 30 meters. When the span of the aluminum alloy bridge is large, pedestrians will feel a noticeable shaking when walking on the large-span aluminum alloy bridge. The structural safety of the original structural system cannot meet the requirements of the structural design, and the stability of the bridge deteriorates. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor stability of the long-span aluminum alloy bridge in the prior art, thereby providing an aluminum alloy bridge.

[0005] In order to solve the above technical problems, the present invention provides an aluminum alloy bridge, comprising:

[0006] The main beam frame is provided with a pair of parallel ones;

[0007] A first chord rod, the first chord rod comprises a first opening structure at least partially covering two wall surfaces oppositely arranged on the main beam frame and a first end surface arranged between the two wall surfaces, and the first opening structure is sleeved and installed at one end of the main beam frame along the extension direction of the main beam frame;

[0008] The supporting frame is installed between a pair of main beam frames, the supporting frame is connected to the first chord and the main beam frame, and a bridge deck is installed on the supporting frame.

[0009] Preferably, it also includes a second chord rod mounted on the main beam frame, the second chord rod is arranged opposite to the first chord rod, and the second chord rod includes a second opening structure of the second end face arranged between the two wall surfaces that at least partially cover the main beam frame and are arranged opposite to each other.

[0010] Preferably, flange plates are horizontally extended on both the first chord and the second chord.

[0011] Preferably, the supporting frame includes a first supporting frame, a second supporting frame and a truss structure arranged between the first supporting frame and the second supporting frame, the first supporting frame is connected to the main beam frame, the bridge deck is installed on the first supporting frame, and the second supporting frame is connected to the first chord and the main beam frame.

[0012] Preferably, the second support frame includes a plurality of parallel horizontal bars and diagonal bars installed at the ends of two adjacent horizontal bars, and the diagonal bars are obliquely intersected with the main beam frame.

[0013] Preferably, two adjacent diagonal rods are installed at the same end of the cross rod.

[0014] Preferably, an auxiliary beam frame arranged parallel to the first support frame is installed on the truss structure, and a transverse damper is installed between the auxiliary beam frame and the first support frame along a width direction parallel to the bridge deck.

[0015] Preferably, a vertical damper is installed on the first chord in a length direction parallel to the bridge deck.

[0016] Preferably, the main beam frame, the supporting base frame and the first chord are all prefabricated components.

[0017] The technical solution of the present invention has the following advantages:

[0018] 1. The aluminum alloy bridge provided by the present invention comprises a pair of main beams arranged in parallel; a first chord, the first chord comprises a first opening structure which at least partially covers two oppositely arranged wall surfaces of the main beam and a first end surface arranged between the two wall surfaces, the first opening structure is sleeved and installed on one end of the main beam along the extension direction of the main beam; a supporting frame installed between the pair of main beams, the supporting frame is connected to the first chord and the main beam, and a bridge deck is installed on the supporting frame.

[0019] By setting a first opening structure on the first chord, the first opening interface is sleeved on the main beam frame, and one end of the main beam frame is wrapped in the first chord. By enhancing the integrity of the first chord, the lateral stiffness of the first chord is increased, the stress required for the deformation of the first chord is increased, and the deflection of the first chord when subjected to force is reduced. When the aluminum alloy bridge is subjected to force, the first chord can limit the displacement and deformation of the aluminum alloy bridge and enhance the stability of the aluminum alloy bridge.

[0020] 2. The aluminum alloy bridge provided by the present invention also includes a second chord rod sleeved and mounted on the main beam frame, the second chord rod is arranged opposite to the first chord rod, and the second chord rod includes a second opening structure that at least partially covers two wall surfaces that are arranged opposite to the main beam frame and a second end surface that is arranged between the two wall surfaces. The second chord rod and the first chord rod are used to fix the two ends of the main beam frame respectively, so as to further enhance the lateral rigidity of the main beam frame, enhance the deformation resistance of the main beam frame, and increase the overall stability of the aluminum alloy bridge.

[0021] 3. The aluminum alloy bridge provided by the present invention has flange plates extending horizontally on the first chord and the second chord, which further increases the bending resistance of the first chord and the second chord, reduces the deformation of the aluminum alloy bridge when subjected to stress, and enhances stability.

[0022] 4. The aluminum alloy bridge provided by the present invention has a supporting base frame including a first supporting frame, a second supporting frame and a truss structure arranged between the first supporting frame and the second supporting frame, wherein the first supporting frame is connected to the main beam frame, the bridge deck is installed on the first supporting frame, and the second supporting frame is connected to the first chord and the main beam frame. The bridge deck is supported by the truss structure, the compression resistance of the bridge deck is enhanced, the deformation of the bridge deck in the vertical direction when subjected to force is reduced, the stability of the bridge deck is increased, and the comfort of pedestrians on the bridge is increased.

[0023] 5. The aluminum alloy bridge provided by the present invention has a second support frame comprising a plurality of parallel horizontal bars and oblique bars installed at the ends of two adjacent horizontal bars, and the oblique bars are obliquely intersected with the main beam frame. Different nodes on the second support frame are stressed to support the upper structure, thereby increasing the stress range of the second support frame and increasing the bearing capacity and service life of the aluminum alloy bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a side view of an aluminum alloy bridge provided in an embodiment of the present invention.

[0026] Figure 2 for Figure 1 Sectional view along line A-A.

[0027] Figure 3 It is a cross-sectional view of a first chord provided in an embodiment of the present invention.

[0028] Figure 4 It is a schematic structural diagram of a second support frame provided in an embodiment of the present invention.

[0029] Figure 5 It is a schematic diagram of the installation of the vertical damper provided in the embodiment of the present invention.

[0030] Explanation of the accompanying drawings: 1. Main beam; 2. First chord; 3. Second chord; 4. Flange plate; 5. First support frame; 6. Second support frame; 7. Truss structure; 8. Bridge deck; 9. Cross bar; 10. Diagonal bar; 11. Auxiliary beam; 12. Transverse damper; 13. Vertical damper. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] like Figures 1 to 5 FIG. 1 is a specific embodiment of the aluminum alloy bridge provided by the present invention. The span of the aluminum alloy bridge is greater than 50 meters. Figure 1 As shown, the aluminum alloy bridge includes: a pair of main beam frames 1 arranged in parallel and a supporting base frame installed between the pair of main beam frames 1.

[0036] like Figure 2As shown, the bottom of the main beam frame 1 is sleeved with a first chord 2 along the extension direction of the main beam frame 1. The first chord 2 includes a first opening structure. The first opening structure partially covers the left and right walls of the main beam frame 1 and the lower end surface between the two walls. The top of the main beam frame 1 is sleeved with a second chord 3 along the extension direction of the main beam frame 1. The second chord 3 includes a second opening structure. The second opening structure partially covers the left and right walls of the main beam frame 1 and the upper end surface between the two walls. Figure 3 As shown, the cross-sections of the first chord 2 and the second chord 3 are both U-shaped, and the top and bottom of the first chord 2 and the second chord 3 are horizontally extended with flange plates 4. The bending resistance of the first chord 2 and the second chord 3 is further increased, the deformation of the aluminum alloy bridge when subjected to force is reduced, and the stability is enhanced. The first chord 2 and the second chord 3 are both integrally formed components. By improving the structure of the first chord 2 and the second chord 3, the integrity of the first chord 2 and the second chord 3 is enhanced, the lateral stiffness of the first chord 2 and the second chord 3 is strengthened, the deformation of the aluminum alloy bridge when subjected to force is reduced, and the stability of the bridge is enhanced, so that when there are many pedestrians walking on the large-span aluminum alloy bridge and the bridge is subjected to uneven force, the bridge can still remain stable.

[0037] The supporting frame includes a first supporting frame 5, a second supporting frame 6 and a truss structure 7 arranged between the first supporting frame 5 and the second supporting frame 6. The first supporting frame 5 is connected to the main beam frame 1. The bridge deck 8 is installed on the first supporting frame 5. The second supporting frame 6 is connected to the first chord 2 and the main beam frame 1. Figure 4 As shown, the second support frame 6 includes a plurality of parallel horizontal bars 9 and an oblique bar 10 installed at the ends of two adjacent horizontal bars 9, and the oblique bar 10 is obliquely intersected with the main beam frame 1. Two adjacent oblique bars 10 are installed at the same end of the horizontal bar 9, and the two oblique bars 10 and the first chord bar 2 form a K node to enhance the bearing capacity of the second support member and increase the service life of the aluminum alloy bridge.

[0038] An auxiliary beam frame 11 arranged parallel to the first support frame 5 is installed on the truss structure 7. Figure 2 As shown, a transverse damper 12 is installed between the auxiliary beam frame 11 and the first support frame 5 along the width direction parallel to the bridge deck 8; Figure 5 As shown, a vertical damper 13 is installed on the first chord 2 in a length direction parallel to the bridge deck 8 to further reduce the shaking of the aluminum alloy bridge when subjected to force and enhance the stability of the aluminum alloy bridge.

[0039] The main beam frame 1, the supporting base frame, the first chord 2 and the second chord 3 are all prefabricated components.

[0040] As an alternative embodiment, the second chord 3 includes two channel steels arranged back to back and a fixing plate installed on the flange plate 4 of the channel steels for fixing the two channel steels, and the two channel steels and the fixing plate form a second opening structure.

[0041] The aluminum alloy bridge provided by the present invention fixes the main beam frame 1 into one body through the first chord 2 and the second chord 3 of the U-shaped cross-section. When the bridge body is subjected to irregular force, the first chord 2 and the second chord 3 completely wrap the ends of the main beam frame 1, which can well fix the main beam frame 1 and limit the displacement of the main beam frame 1, thereby limiting the displacement of the supporting base frame and the bridge deck 8, so that the aluminum alloy bridge structure provided by the present invention can be suitable for bridges with larger spans.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An aluminum alloy bridge, characterized in that: include: A pair of main beam frames (1) are provided in parallel; A first chord (2), the first chord (2) comprising two wall surfaces at least partially covering the main beam frame (1) and arranged opposite to each other, and a first opening structure arranged at a first end surface between the two wall surfaces, the first opening structure being sleeved and installed on one end of the main beam frame (1) along the extension direction of the main beam frame (1), the first chord (2) being an integrally formed component; and a flange plate (4) extending horizontally from the first chord (2); The supporting frame is installed between a pair of main beam frames (1), the supporting frame is connected to the first chord (2) and the main beam frame (1), and a bridge deck (8) is installed on the supporting frame.

2. The aluminum alloy bridge according to claim 1, characterized in that: It also includes a second chord (3) sleeved and mounted on the main beam frame (1), the second chord (3) being arranged opposite to the first chord (2), and the second chord (3) including a second opening structure at least partially covering two wall surfaces opposite to the main beam frame (1) and a second end surface arranged between the two wall surfaces.

3. The aluminum alloy bridge according to claim 2, characterized in that: A flange plate (4) extends horizontally on the second chord.

4. The aluminum alloy bridge according to any one of claims 1 to 3, characterized in that: The supporting frame comprises a first supporting frame (5), a second supporting frame (6) and a truss structure (7) arranged between the first supporting frame (5) and the second supporting frame (6), wherein the first supporting frame (5) is connected to the main beam frame (1), the bridge deck (8) is mounted on the first supporting frame (5), and the second supporting frame (6) is connected to the first chord (2) and the main beam frame (1).

5. The aluminum alloy bridge according to claim 4, characterized in that: The second support frame (6) comprises a plurality of parallel cross bars (9) and an oblique bar (10) mounted at the ends of two adjacent cross bars (9), wherein the oblique bar (10) is obliquely intersected with the main beam frame (1).

6. The aluminum alloy bridge according to claim 5, characterized in that: Two adjacent oblique rods (10) are installed on the same end of the cross rod (9).

7. The aluminum alloy bridge according to claim 4, characterized in that: An auxiliary beam frame (11) arranged parallel to the first support frame (5) is installed on the truss structure (7), and a transverse damper (12) is installed between the auxiliary beam frame (11) and the first support frame (5) along a width direction parallel to the bridge deck (8).

8. The aluminum alloy bridge according to any one of claims 1 to 3, characterized in that: A vertical damper (13) is installed on the first chord (2) along a length direction parallel to the bridge deck (8).

9. The aluminum alloy bridge according to any one of claims 1 to 3, characterized in that: The main beam frame (1), the supporting base frame and the first chord (2) are all prefabricated components.

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