Steel truss girder multi-tower cable-stayed bridge structure

Abstract

The utility model provides a steel truss girder multi-tower cable-stayed bridge structure which comprises a plurality of steel truss girder units, a bridge upper channel, a bridge lower channel and a cable-stayed seat, and after the steel truss girder units are fixedly installed together, a steel truss girder system of a cable-stayed bridge is jointly constructed; the bridge upper channel, the bridge lower channel and the cable-stayed seats are mounted on the steel truss units, and the cable-stayed seats are connected with the stay cables; the steel truss girder structure adopts a modular design, so that the construction period is shortened, the difficulty is reduced, and the construction efficiency is improved. The design of the *-shaped structure enhances the bending resistance and torsion resistance, and solves the problem of deformation and damage. The diamond-shaped structure provides extra redundancy and ensures that the bridge is stable and reliable. The outer shoulder inclined rods and the inner shoulder inclined rods enhance the supporting force, endow the bridge with unique visual charm, become urban scenery lines and improve the ornamental value and the urban image.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel truss cable-stayed bridges, in particular to a steel truss multi-tower cable-stayed bridge structure. Background Art

[0002] The steel truss multi-tower cable-stayed bridge structure is a bridge design that combines beauty, efficiency and practicality. The structure uses steel trusses as the main beams and is supported by multiple towers and cable stays, showing excellent bearing capacity and stability. Its main features include: light structure that can meet the needs of bridge construction under different spans and load conditions; small building height, which is conducive to the use of clearance under the bridge and the creation of landscape; strong vertical stiffness and torsional stiffness, which can effectively resist the influence of wind loads and seismic loads.

[0003] At present, the traditional steel truss multi-tower cable-stayed bridge structure often encounters stress concentration and potential instability when facing the challenges of gravity and external forces, which greatly threatens the structural safety of the bridge. In addition, when the bridge is subjected to complex loads, it may experience significant deformation or even damage, which further increases the risk of bridge operation. More importantly, traditional bridge construction methods are often accompanied by long construction periods and high technical difficulties, which not only increases project costs, but also affects the timely delivery and use of bridges.

[0004] Therefore, it is very necessary to invent a steel truss multi-tower cable-stayed bridge structure. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a steel truss girder multi-tower cable-stayed bridge structure, including a steel truss girder unit, an upper bridge channel, an underbridge channel and a cable-stayed seat, wherein a plurality of steel truss girder units are provided, and after the steel truss girder units are fixedly installed together, a steel truss girder system of the cable-stayed bridge is jointly constructed; the upper bridge channel, the underbridge channel and the cable-stayed seat are installed on the steel truss girder unit, and the cable-stayed seat is connected to the cable-stayed cable;

[0006] The steel truss unit includes an upper chord, a lower chord, a transverse chord, a vertical web, a diagonal web, an outer shoulder diagonal web and an inner shoulder diagonal web. There are two upper chords and two lower chords in total and they are arranged parallel to each other. The two upper chords and the two lower chords are connected to each other through the transverse chord. The upper channel of the bridge and the lower channel of the bridge are respectively installed on the upper chord and the lower chord, and the diagonal seat is fixed on the upper chord. The vertical web and the diagonal web are installed between the upper chord and the lower chord. The inner shoulder diagonal web is respectively fixed to the transverse chord and the vertical web, and the outer shoulder diagonal web is respectively fixed to the vertical web and the upper channel of the bridge.

[0007] Preferably, the upper chord and the lower chord have the same size, the upper chord is located above the lower chord, the transverse chord fixedly installed between the two upper chords and the two lower chords is an "H"-shaped steel, and at least three transverse chords are provided.

[0008] Preferably, a single vertical web member and four diagonal web members are installed between the upper chord and the lower chord, two diagonal web members are respectively arranged on both sides of the vertical web member, the vertical web member and the diagonal web members are installed together to form a "M"-shaped structure, and the two diagonal web members are combined to form a "V"-shaped structure.

[0009] Preferably, the four diagonal web members of adjacent steel truss beam units form a diamond structure, and the upper chord and the lower chord of the steel truss beam unit are fixedly mounted together.

[0010] Preferably, the outer shoulder diagonal rod and the inner shoulder diagonal rod are in a "W"-shaped structure, and two outer shoulder diagonal rods and two inner shoulder diagonal rods are respectively provided, the inner shoulder diagonal rod is located on the inner side of the vertical web rod, and the outer shoulder diagonal rod is located on the outer side of the vertical web rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model steel truss structure cleverly adopts the modular design concept, significantly shortens the construction period of traditional bridges, reduces the construction difficulty, and greatly improves the construction efficiency. Its unique "M"-shaped structural design composed of vertical webs and diagonal webs not only significantly enhances the bending and torsion resistance of the structure, but also effectively solves the deformation and damage problems that may occur in bridges under complex loads.

[0013] Furthermore, the diamond-shaped structure formed by two sets of adjacent diagonal web members adds additional redundancy to the bridge, which means that even in the extreme case of partial failure of the members, the entire structure can still maintain considerable stability and load-bearing capacity, ensuring the safety and reliability of the bridge.

[0014] In addition, the design of the outer shoulder diagonal rod and the inner shoulder diagonal rod not only enhances the supporting force of the channel on the bridge, but also visually gives the bridge a unique charm and tension, making it a beautiful landscape in the city, greatly enhancing the bridge's ornamental value and the city's image. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the steel truss girder structural system of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the steel truss beam unit of the utility model.

[0018] In the figure:

[0019] Steel truss beam unit 1, upper chord 11, lower chord 12, transverse chord 13, vertical web member 14, diagonal web member 15, outer shoulder diagonal member 16, inner shoulder diagonal member 17, upper bridge channel 2, lower bridge channel 3, cable-stayed seat 4. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0021] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0022] As attached Figure 1 To Attachment Figure 3 As shown:

[0023] The utility model provides a steel truss girder multi-tower cable-stayed bridge structure, comprising a steel truss girder unit 1, a bridge upper passage 2, a bridge lower passage 3 and a cable-stayed seat 4, wherein the steel truss girder unit 1 is provided with a plurality of steel truss girder units 1, and after the steel truss girder units 1 are fixedly installed together, they jointly construct a steel truss girder system of the cable-stayed bridge; the steel truss girder unit 1 is provided with the bridge upper passage 2, the bridge lower passage 3 and the cable-stayed seat 4, and the cable-stayed seat 4 is connected to the cable-stayed cable. The steel truss girder system adopts a modular design, which solves the problems of long construction period and high difficulty of traditional bridges.

[0024] The steel truss unit 1 includes an upper chord 11, a lower chord 12, a transverse chord 13, a vertical web member 14, a diagonal web member 15, an outer shoulder diagonal member 16 and an inner shoulder diagonal member 17. There are two upper chords 11 and two lower chords 12 in total, and they are arranged parallel to each other. The two upper chords 11 and the two lower chords 12 are connected to each other through the transverse chord 13; the bridge upper channel 2 and the bridge lower channel 3 are respectively installed on the upper chord 11 and the lower chord 12, and the inclined stay seat 4 is fixed on the upper chord 11; the vertical web member 14 and the diagonal web member 15 are installed between the upper chord 11 and the lower chord 12; the inner shoulder diagonal member 17 is respectively fixed to the transverse chord 13 and the vertical web member 14, and the outer shoulder diagonal member 16 is respectively fixed to the vertical web member 14 and the bridge upper channel 2. The steel truss beam unit introduces "M"-shaped and "W"-shaped structures to solve the deformation and damage problems that may occur when the bridge is subjected to complex loads, increase the supporting force of channel 2 on the bridge, and make the bridge more unique and full of tension visually.

[0025] Embodiment 1:

[0026] Specifically, in the steel truss structure, the upper chord 11 and the lower chord 12 are the main load-bearing components, and their sizes are designed to be exactly the same to ensure that the bridge is evenly stressed in the vertical direction and to avoid unnecessary stress concentration. The upper chord 11 is located above the lower chord 12, and together they constitute the main frame of the bridge. Between the two upper chords 11 and the two lower chords 12, a transverse chord 13 is fixedly installed. The "H"-shaped steel structure of the transverse chord 13 has excellent load-bearing capacity and stability, and can provide strong support in the horizontal direction. There are at least three transverse chords 13, which are evenly distributed between the upper chord 11 and the lower chord 12, forming a stable network structure, making the entire steel truss structure more solid and reliable.

[0027] Specifically, a single vertical web member 14 and four diagonal web members 15 are installed between the upper chord 11 and the lower chord 12. The vertical web member 14 is located at the center, and two diagonal web members 15 are respectively arranged on both sides thereof. These four diagonal web members 15 are interconnected with the vertical web member 14 to form a unique "M"-shaped structure. This structural design not only strengthens the connection between the upper and lower chords, but also significantly improves the bending and torsion resistance of the structure, so that the steel truss structure can remain stable when subjected to complex loads. In addition, when any two adjacent diagonal web members 15 are combined together, a "V"-shaped structure is formed. This "V"-shaped structure further enhances the stability and bearing capacity of the structure, especially in terms of resisting lateral forces.

[0028] Specifically, the four diagonal web members 15 of the adjacent steel truss beam units 1 form a diamond structure. The design of the diamond structure not only enhances the connection stability between the adjacent steel truss beam units 1, but also enables the entire bridge structure to distribute stress more evenly when subjected to external loads, and adds additional redundancy to the bridge, thereby improving the overall stability and bearing capacity of the bridge. The upper chord 11 and the lower chord 12 of the steel truss beam unit 1 are fixedly mounted together.

[0029] Specifically, the outer shoulder diagonal rod 16 and the inner shoulder diagonal rod 17 are in a "W"-shaped structure, which not only provides excellent mechanical properties, but also makes the bridge visually more unique and full of tension. Two outer shoulder diagonal rods 16 and two inner shoulder diagonal rods 17 are respectively provided, symmetrically distributed on both sides of the vertical web rod 14. The inner shoulder diagonal rod 17 is located on the inner side of the vertical web rod 14. Together with the vertical web rod 14 and other main rods, they form a stable internal structure, which enhances the rigidity and bearing capacity of the bridge. The outer shoulder diagonal rod 16 is located on the outer side of the vertical web rod 14, which not only enhances the external stability of the bridge, but also adds beauty and artistic sense to the bridge through its unique "W"-shaped design. This design makes the bridge visually lighter and more elegant, becoming a beautiful landscape in the urban landscape.

[0030] Embodiment 2:

[0031] The steel truss unit 1 uses high-performance steel as the main manufacturing material. High-performance steel has excellent mechanical properties and durability, and can maintain stable mechanical properties and long service life under complex and changing environmental conditions. Compared with traditional ordinary steel, high-performance steel has higher yield strength, tensile strength and toughness, and can withstand greater loads and deformations, thereby improving the bearing capacity and durability of the bridge.

[0032] Advanced welding technologies were introduced during the manufacturing and installation of the steel truss unit 1. These technologies include automated welding, laser welding, and ultrasonic welding, which can ensure the quality and strength of the welded joints and improve the overall structural performance of the bridge. Automated welding technology can reduce errors caused by human factors and improve the accuracy and efficiency of welding; laser welding technology can achieve high-precision and high-efficiency welding, which is suitable for welding complex structures; ultrasonic welding technology can ensure seamless connection of welded joints and improve the sealing and durability of the bridge.

[0033] In order to improve the durability and service life of the steel truss unit 1, advanced anti-corrosion technologies are also introduced. These technologies include thermal spraying zinc layer, thermal spraying aluminum layer, thermal spraying zinc-aluminum composite layer and organic coating. These anti-corrosion coatings can form a dense protective layer to isolate the steel from the external environment and prevent the steel from corrosion and erosion. At the same time, these anti-corrosion coatings also have good wear resistance and weather resistance, and can maintain their anti-corrosion performance for a long time, ensuring the safety and reliability of the bridge.

[0034] Embodiment three:

[0035] Modular Design:

[0036] The steel truss beam unit 1 adopts a modular design, which greatly shortens the bridge construction period and reduces the construction difficulty. By fixing and installing the steel truss beam units 1 together, a steel truss beam system of the cable-stayed bridge is constructed, providing stable support for the overall structure of the bridge.

[0037] Main bearing components:

[0038] The upper chord 11 and the lower chord 12 are the main load-bearing components, with the same size and arranged parallel to each other, ensuring that the bridge is evenly stressed in the vertical direction. The transverse chord 13 adopts an "H"-shaped steel structure and is evenly distributed between the upper chord 11 and the lower chord 12, enhancing the horizontal load-bearing capacity of the structure.

[0039] "M" and "V" shaped structures:

[0040] The upper chord 11 and the lower chord 12 are connected by a vertical web member 14 and four diagonal web members 15, forming a unique "M"-shaped structure, which significantly improves the bending and torsion resistance of the structure. Any two adjacent diagonal web members 15 are combined together to form a "V"-shaped structure, further enhancing the stability and bearing capacity of the structure.

[0041] Diamond structure and redundancy:

[0042] The four diagonal web members 15 of adjacent steel truss beam units 1 form a diamond structure, which enhances the connection stability between adjacent units and enables the bridge to distribute stress more evenly when subjected to external loads. This design also adds additional redundancy to the bridge, so that even if some members fail, the structure can still maintain a certain stability and load-bearing capacity.

[0043] "W" type structure:

[0044] The outer shoulder diagonal rod 16 and the inner shoulder diagonal rod 17 adopt a "W" type structural design, which not only provides excellent mechanical properties, but also makes the bridge more unique and full of tension visually. It not only enhances the rigidity and bearing capacity of the bridge, but also improves the ornamental value of the bridge through its unique aesthetic effect.

[0045] Cable and cable-stayed seat:

[0046] The cable-stayed cable is connected to the steel truss beam unit 1 through the cable-stayed seat 4, providing additional support for the bridge, so that the entire bridge structure can achieve balance and stability. The tension of the cable-stayed cable is determined according to the design load and structural form of the bridge, which can effectively share the bridge load and reduce the stress on the main beam, thereby reducing the deadweight and cost of the bridge structure.

[0047] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A steel truss multi-tower cable-stayed bridge structure, characterized in that: The invention comprises a steel truss beam unit (1), an upper bridge passage (2), an underbridge passage (3) and a cable-stayed seat (4), wherein a plurality of the steel truss beam units (1) are provided, and after the steel truss beam units (1) are fixedly installed together, a steel truss beam system of a cable-stayed bridge is jointly constructed; the upper bridge passage (2), the underbridge passage (3) and the cable-stayed seat (4) are installed on the steel truss beam unit (1), and the cable-stayed seat (4) is connected to the cable-stayed cable; The steel truss beam unit (1) comprises an upper chord (11), a lower chord (12), a transverse chord (13), a vertical web member (14), a diagonal web member (15), an outer shoulder diagonal member (16) and an inner shoulder diagonal member (17); a total of two upper chords (11) and two lower chords (12) are provided and are arranged parallel to each other; the two upper chords (11) and the two lower chords (12) are connected via the transverse chord (13); the upper channel (2) and the lower channel (3) of the bridge are connected to each other; ) are respectively installed on the upper chord (11) and the lower chord (12), and the inclined seat (4) is fixedly installed on the upper chord (11); the vertical web member (14) and the diagonal web member (15) are installed between the upper chord (11) and the lower chord (12); the inner shoulder diagonal member (17) is respectively fixed to the transverse chord (13) and the vertical web member (14), and the outer shoulder diagonal member (16) is respectively fixed to the vertical web member (14) and the upper channel (2) of the bridge.

2. A steel truss girder multi-tower cable-stayed bridge structure as claimed in claim 1, characterized in that: The upper chord (11) and the lower chord (12) have the same size. The upper chord (11) is located above the lower chord (12). The transverse chord (13) fixedly installed between the two upper chords (11) and the two lower chords (12) is an "H"-shaped steel. At least three transverse chords (13) are provided.

3. The steel truss girder multi-tower cable-stayed bridge structure according to claim 1, characterized in that: A single vertical web member (14) and four diagonal web members (15) are installed between the upper chord (11) and the lower chord (12), two diagonal web members (15) are respectively installed on both sides of the vertical web member (14), the vertical web member (14) and the diagonal web members (15) are installed together to form a "M"-shaped structure, and the two diagonal web members (15) are combined together to form a "V"-shaped structure.

4. The steel truss girder multi-tower cable-stayed bridge structure according to claim 1, characterized in that: The four diagonal web members (15) of the adjacent steel truss beam units (1) form a diamond structure, and the upper chord member (11) and the lower chord member (12) of the steel truss beam unit (1) are fixedly mounted together.

5. The steel truss girder multi-tower cable-stayed bridge structure according to claim 1, characterized in that: The outer shoulder diagonal rod (16) and the inner shoulder diagonal rod (17) are in a "W"-shaped structure. Two outer shoulder diagonal rods (16) and two inner shoulder diagonal rods (17) are respectively provided. The inner shoulder diagonal rod (17) is located on the inner side of the vertical web rod (14), and the outer shoulder diagonal rod (16) is located on the outer side of the vertical web rod (14).

Images