Municipal large-span pedestrian overpass steel box girder and truss combined structure system

Abstract

The invention provides a municipal large-span pedestrian overpass steel box girder and truss combined structure system which comprises a bridge body, protection assemblies used for protecting pedestrians are installed on the two sides of the bridge body, the bridge body comprises a steel box girder, side wing assemblies are arranged on the two sides of the steel box girder, a truss is arranged in the center of the top of the steel box girder, and the truss is used for dividing the steel box girder into two-way channels. The truss comprises a bottom frame fixed to the top of the steel box girder, a plurality of belly assemblies are installed on the bottom frame, chord members are connected to the ends, away from the bottom frame, of the belly assemblies, each belly assembly comprises a belly member, a triangular structure is formed between every two adjacent belly members and the bottom frame, a triangular notch is formed in each triangular structure, and rib plates are arranged at the triangular positions of the triangular notches. According to the invention, the truss is arranged at the central position of the top of the steel box girder, and the height of the truss is equivalent to that of the protection assembly, so that the function of separating two-way passage is achieved, the effect of increasing the structural rigidity is also achieved, the whole bridge body is firmer and more stable, and unification of landscape and comfort is realized.

Description

Technical Field

[0001] This invention relates to the field of pedestrian bridge structure technology, and in particular to a combined steel box girder and truss structure system for a large-span pedestrian bridge in municipal areas. Background Technology

[0002] A truss is a structural form that typically consists of multiple straight members connected together by hinges to form triangular units. The design of a truss allows it to primarily bear axial tension or compression, thereby effectively utilizing the strength of the material, reducing its own weight, and increasing the rigidity of the structure. A steel box girder, also known as a steel plate box girder, is a common structural form for long-span bridges. Its main body is constructed from a top plate, bottom plate, web plate, and transverse and longitudinal diaphragms using a fully welded process.

[0003] Existing pedestrian bridges generally use trusses or steel box girders as their load-bearing system. However, pedestrian bridges using trusses or steel box girders as their load-bearing system are either too high or have a small span. Therefore, pedestrian bridges using trusses or steel box girders as their load-bearing system cannot be used in some areas that require a large span and a low height, thus reducing the applicability of current pedestrian bridges in terms of construction and site selection. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal areas, thus solving the aforementioned technical issues.

[0005] To achieve the above objectives, the present invention provides a combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal areas. The system includes a bridge body with protective components installed on both sides for pedestrian safety. The bridge body comprises a steel box girder with side wing components on both sides. A truss is positioned at the center of the top of the steel box girder, dividing it into bidirectional passageways. The truss includes a base frame fixed to the top of the steel box girder, on which multiple web components are mounted. A chord is connected to the end of each web component away from the base frame. Each web component includes web members, and adjacent web members form a triangular structure with the base frame. A triangular notch is formed within this triangular structure, and stiffening plates are provided at the triangular points of the notches. The stiffening plates at the triangular points further strengthen the truss's compressive strength, making the combined steel box girder and truss structure system for the large-span pedestrian overpass more robust and reliable, thus improving the safety of its use.

[0006] As a further preferred embodiment of the present invention, support seats are connected to the bottom of both sides of the steel box girder, and a base is connected to the end of the support seat away from the steel box girder. The steel box girder and the support seats form a pier-beam fixed connection. Decorative panels are provided on both sides of the steel box girder. The decorative panels on both sides of the steel box girder enhance the overall aesthetic appearance of the combined steel box girder and truss structure system of the municipal long-span pedestrian overpass.

[0007] As a further preferred embodiment of the present invention, the top of the steel box girder is filled from bottom to top with a 6-8.4cm thick layer of C40P8 waterproof concrete, a waterproof layer, a 2cm thick layer of mortar, and a 3cm thick layer of bush-hammered granite facing bricks. This filling of the top of the steel box girder with the 6-8.4cm thick C40P8 waterproof concrete, waterproof layer, 2cm thick mortar layer, and 3cm thick bush-hammered granite facing bricks enhances the overall strength of the combined steel box girder and truss structure system of the municipal long-span pedestrian overpass.

[0008] As a further preferred embodiment of the present invention, the side wing assembly includes side steel with placement grooves. Multiple sets of limiting blocks are arranged in pairs within the placement grooves on the side steel. Flower pots are placed within the limiting blocks, and the limiting blocks are used to restrict the installation of the flower pots. The limiting blocks restrict the installation of the flower pots, making their position controllable and improving the practicality of the steel box girder and truss combined structure system for large-span pedestrian bridges in municipal engineering.

[0009] As a further preferred embodiment of the present invention, a pre-embedded groove is also provided in the side wing assembly, and the protective assembly includes a railing assembly installed in the pre-embedded groove. A watering assembly is provided behind the railing assembly, and the watering assembly is used to facilitate sanitation workers to water the plants in the flower pots.

[0010] As a further preferred embodiment of the present invention, the railing assembly includes multiple support frames installed inside the steel box girder, with multiple horizontal bars installed through the multiple support frames, and multiple vertical bars installed between the lower horizontal bars, thereby improving the safety of the combined steel box girder and truss structure system for municipal long-span pedestrian overpasses.

[0011] As a further preferred embodiment of the present invention, the watering assembly includes a waterproof plate mounted on a support frame, and a hollow steel plate is fixedly mounted on one end of the waterproof plate away from the support frame, the steel plate being used for water diversion.

[0012] As a further preferred embodiment of the present invention, the steel plate has a plurality of watering holes on the side away from the waterproof plate, and a connecting block is provided on the watering hole. A pipe is connected to the connecting block, and the end of the pipe is located inside the flowerpot.

[0013] As a further preferred embodiment of the present invention, the steel plate is U-shaped.

[0014] As a further preferred embodiment of the present invention, the support base is a steel-concrete composite column. The use of a steel-concrete composite column as the support base enhances the overall compressive strength of the combined steel box girder and truss structure system of the municipal long-span pedestrian overpass.

[0015] The beneficial effects of this invention are as follows: In this invention, a truss is set at the center of the top of the steel box girder. The height of the truss is similar to that of the protective component. This serves both to separate two-way traffic and to increase the structural rigidity, making the bridge more robust and stable as a whole. This achieves a balance between aesthetics and comfort, and enhances the practicality of the combined steel box girder and truss structure system for large-span pedestrian bridges in municipal areas.

[0016] In this invention, a hollow steel plate is installed behind the support frame, and a connecting block and a pipe are installed on the steel plate. The end of the pipe is placed inside the flowerpot. Therefore, sanitation workers only need to insert a water gun into the hollow steel plate to spray water. The sprayed water can flow directly into all the flowerpots through the pipe, which makes it convenient for sanitation workers to water the flowerpots on the steel box girder and truss combined structure system of the municipal large-span pedestrian overpass, and improves the convenience of watering the flowerpots in the steel box girder and truss combined structure system of the municipal large-span pedestrian overpass. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal areas, according to the present invention.

[0018] Figure 2 This is a left view of a combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to the present invention.

[0019] Figure 3 This is a left-side bottom-view three-dimensional structural diagram of a combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal areas, according to the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the bridge body in the combined steel box girder and truss structure system of a municipal long-span pedestrian overpass according to the present invention.

[0021] Figure 5 This is a partially enlarged three-dimensional structural diagram of A in the combined steel box girder and truss structure system of a municipal long-span pedestrian overpass according to the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the truss in the combined steel box girder and truss structure system of a large-span pedestrian overpass in municipal engineering according to the present invention.

[0023] Figure 7 This is a partially enlarged three-dimensional structural diagram of B in the combined steel box girder and truss structure system of a municipal long-span pedestrian overpass according to the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the protective components in a combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal areas, according to the present invention.

[0025] Figure 9 This is a partially enlarged three-dimensional structural diagram of C in the combined steel box girder and truss structure system of a municipal long-span pedestrian overpass according to the present invention.

[0026] Figure 10 This is a partially enlarged three-dimensional structural diagram of D in the combined steel box girder and truss structure system of a municipal long-span pedestrian overpass according to the present invention.

[0027] In the diagram: Bridge body 1, protective component 2, steel box girder 11, truss 12, support seat 13, base 14, side wing component 15, side steel 151, placement groove 152, limiting block 153, flower pot 154, pre-embedded groove 155, chord 121, base frame 122, abdominal component 123, abdominal rod 1231, triangular notch 1232, stiffening plate 1233, railing component 21, watering component 22, rounded corner 211, horizontal bar 212, vertical bar 213, support frame 214, steel plate 221, waterproof board 222, pipe body 223, connecting block 224. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1 Reference Figures 1 to 7 As shown; This invention provides a combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal areas. The system includes a bridge body 1, with protective components 2 installed on both sides for pedestrian protection. The bridge body 1 includes a steel box girder 11, with side wing components 15 on both sides of the steel box girder 11. A truss 12 is located at the center of the top of the steel box girder 11, dividing the steel box girder 11 into a two-way passage. The truss 12 includes a base frame 122 fixed to the top of the steel box girder 11, with multiple web components 123 installed on the base frame 122. A chord member 121 is connected to one end of each web component 123 away from the base frame 122. 23 includes web members 1231. Two adjacent web members 1231 form a triangular structure with the base frame 122. A triangular notch 1232 is opened in the triangular structure. A stiffening plate 1233 is set at the triangular part of the triangular notch 1232. Support seats 13 are connected to the bottom of both sides of the steel box girder 11. The end of the support seat 13 away from the steel box girder 11 is connected to the base 14. The steel box girder 11 and the support seat 13 form a pier-beam connection. Decorative panels are set on both sides of the steel box girder 11. The top of the steel box girder 11 is filled from bottom to top with 6-8.4cm thick C40P8 waterproof concrete, a waterproof layer, a 2cm thick mortar layer, and a 3cm thick lychee-faced granite brick. The support seat 13 is a steel pipe concrete column.

[0030] Furthermore, since a triangular structure is formed between two adjacent web members 1231 and the base frame 122, and a triangular notch 1232 is provided between two adjacent web members 1231 and the base frame 122, the entire truss 12 is directly composed of multiple highly stable triangular structures. By setting stiffening plates 1233 between the triangles of the web members 1231 and the base frame 122, the stability and compressive strength of the truss 12 are further improved, thus enhancing the overall stability of the combined steel box girder and truss structure system of the municipal large-span pedestrian overpass.

[0031] Furthermore, the support base 13 adopts a steel-concrete composite structure and a steel box girder 11 fixed system. A steel structure truss 12 is set in a certain range in the middle of the steel box girder 11. The height of the truss 12 is similar to the height of the railing, which not only serves to separate two-way traffic but also increases the structural rigidity, thus achieving a unity of aesthetics and comfort.

[0032] Furthermore, the combined steel box girder and truss structure system of the municipal long-span pedestrian overpass directly adopts the steel box girder 11 and truss 12 as the load-bearing system, making the overall structure of the municipal long-span pedestrian overpass more robust and adaptable to environments with lower heights. At the same time, it can achieve long spans in a single span, improving the practicality of the combined steel box girder and truss structure system of the municipal long-span pedestrian overpass.

[0033] Detailed usage and function of this embodiment: In this invention, during the construction of the combined steel box girder and truss structure system for a large-span pedestrian bridge in municipal areas, the user constructs the truss 12 after completing the construction of the steel box girder 11. This results in a T-shaped structure being directly formed between the steel box girder 11 and the truss 12. The entire truss 12 is composed of multiple highly stable triangular structures, which effectively enhances the strength of the steel box girder 11. This makes the combined steel box girder and truss structure system for the large-span pedestrian bridge in municipal areas more robust and adaptable to environments with lower elevations. It also enables long single-span structures, improving the practicality of the combined steel box girder and truss structure system for the large-span pedestrian bridge in municipal areas.

[0034] Example 2 Reference Figures 8-10 As shown; The side wing assembly 15 includes side steel 151, with a placement groove 152 on the side steel 151. Multiple sets of limiting blocks 153 are arranged in pairs within the placement groove 152 on the side steel 151. Flower pots 154 are placed within the limiting blocks 153, which are used to limit the installation of the flower pots 154. The side wing assembly 15 also has a pre-embedded groove 155. The protective assembly 2 includes a railing assembly 21 installed within the pre-embedded groove 155. A watering assembly 22 is located behind the railing assembly 21, facilitating watering of the plants in the flower pots 154 by sanitation workers. The railing assembly 21 includes multiple components installed on the steel box beam. The support frame 214 inside the 11 has multiple horizontal bars 212 installed through it. Multiple vertical bars 213 are installed between the horizontal bars 212 below. The watering component 22 includes a waterproof plate 222 installed on the support frame 214. A hollow steel plate 221 is fixedly installed on the end of the waterproof plate 222 away from the support frame 214. The steel plate 221 is used for water diversion. Multiple watering holes are opened on the side of the steel plate 221 away from the waterproof plate 222. A connecting block 224 is provided on the watering hole. A pipe body 223 is connected to the connecting block 224. The end of the pipe body 223 is located inside the flower pot 154. The steel plate 221 is U-shaped.

[0035] Furthermore, depending on the specific environment and economic needs, the designer can also set the manual watering method into an automatic sprinkler system. The bottom of the flowerpot 154 is equipped with a pipe to collect drip irrigation water. In this case, sanitation workers do not need to water the flowerpot 154. Since the automatic sprinkler system is a mature existing technology and is within the knowledge of those skilled in the art, this invention will not elaborate further.

[0036] Furthermore, since the steel plate 221 is made of stainless steel and has through openings on both sides, sanitation workers only need to insert a water gun into the steel plate 221, and the sprayed water will flow out through the pipe 223 into the flower pot 154. Excess water will flow out through the placement trough 152 onto the lawn outside the steel box girder and truss combined structure system of the municipal large-span pedestrian overpass, which improves the convenience for sanitation workers to water the flower pot 154.

[0037] Furthermore, since the entire railing assembly 21 is installed by combining multiple horizontal bars 212 and vertical bars 213, the railing assembly 21 can effectively resist external impacts, thus improving the practicality of the steel box girder and truss combined structure system for municipal long-span pedestrian overpasses.

[0038] Detailed usage and function of this embodiment: In this invention, when the steel box girder and truss combined structure system of the municipal long-span pedestrian overpass is in use, the railing components 21 on both sides of the system can effectively protect people on the system. When sanitation workers need to water the plants in the flower pots 154, they only need to insert a water gun into the left or right side of the steel plate 221. The sprayed water will flow along the steel plate 221, and the waterproof plate 222 effectively isolates the water from the support frame 214. At this time, the water will flow directly out through the pipe 223 and into the flower pot 154, while the excess water will flow into the lawn next to the system, thus improving the practicality of the system.

[0039] The following is in conjunction with the appendix Figure 1 -Appendix Figure 10 The following is a further detailed description of this application: The working principle of this invention is explained below: When installing the combined steel box girder and truss structure system of a large-span pedestrian bridge, the user first needs to construct the steel box girder 11 according to the conventional process. Then, the user constructs the truss 12 at the center of the steel box girder 11. At this point, the combined steel box girder and truss structure system of the large-span pedestrian bridge simultaneously possesses the strength of both the steel box girder 11 and the truss 12. The chord 121, base frame 122, web member 1231, triangular notch 1232, and stiffening plate 1233 further enhance the strength of the truss 12. Meanwhile, the flower pots 154 on both sides of the steel box girder 11 enhance the aesthetics of the combined steel box girder and truss structure system of the large-span pedestrian bridge. When the flower pots 154 need to be placed... When watering, sanitation workers can directly insert water pipes into the steel plate 221 and use the pipe body 223 to water all the flower pots 154 within the combined steel box girder and truss structure of the municipal large-span pedestrian overpass. The protective component 2 with horizontal bars 212 and vertical bars 213 can effectively protect pedestrians on the side of the combined steel box girder and truss structure of the municipal large-span pedestrian overpass. The height of the truss is similar to the height of the protective component, which not only separates two-way traffic but also increases the structural rigidity, making the bridge more solid and stable. This achieves a unity of aesthetics and comfort, and improves the practicality of the combined steel box girder and truss structure of the municipal large-span pedestrian overpass.

[0040] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution of this invention, or by designing a similar technical solution inspired by the technical solution of this invention, falls within the protection scope of this invention.

Claims

1. A composite structural system of steel box girder and truss for a large-span pedestrian overpass in municipal engineering, characterized in that, The bridge includes a bridge body (1), on both sides of which protective components (2) for pedestrian protection are installed. The bridge body (1) includes a steel box girder (11), on both sides of which side wing components (15) are provided. A truss (12) is provided at the center of the top of the steel box girder (11). The truss (12) is used to divide the steel box girder (11) into a two-way passage. The truss (12) includes a base frame (122) fixed to the top of the steel box girder (11). Multiple abdominal components (123) are installed on the base frame (122). One end of the abdominal component (123) away from the base frame (122) is connected to a chord (121). The abdominal component (123) includes a web member (1231). Two adjacent web members (1231) and the base frame (122) form a triangular structure. A triangular notch (1232) is opened in the triangular structure. A stiffening plate (1233) is provided at the triangular notch (1232).

2. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 1, characterized in that: The bottom of both sides of the steel box girder (11) is connected to a support seat (13), and the end of the support seat (13) away from the steel box girder (11) is connected to a base (14). The steel box girder (11) and the support seat (13) form a pier-beam connection. Decorative panels are provided on both sides of the steel box girder (11).

3. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 1, characterized in that: The top of the steel box girder (11) is filled from bottom to top with 6-8.4cm thick C40P8 waterproof concrete, a waterproof layer, a 2cm thick mortar layer, and a 3cm thick lychee-faced granite brick.

4. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 1, characterized in that: The side wing assembly (15) includes a side steel (151), on which a placement groove (152) is provided. Multiple sets of limiting blocks (153) are arranged in pairs in the placement groove (152) of the side steel (151). A flower pot (154) is placed in the limiting block (153), and the limiting block (153) is used to limit the installation of the flower pot (154).

5. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 4, characterized in that: The side wing assembly (15) is also provided with a pre-embedded groove (155). The protective assembly (2) includes a railing assembly (21) installed in the pre-embedded groove (155). A watering assembly (22) is provided behind the railing assembly (21). The watering assembly (22) is used to facilitate sanitation workers to water the plants in the flower pot (154).

6. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 5, characterized in that: The railing assembly (21) includes multiple support frames (214) installed inside the steel box girder (11), multiple horizontal bars (212) are installed through the multiple support frames (214), and multiple vertical bars (213) are installed between the lower horizontal bars (212).

7. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 6, characterized in that: The watering assembly (22) includes a waterproof plate (222) mounted on a support frame (214), and a hollow steel plate (221) is fixedly installed at one end of the waterproof plate (222) away from the support frame (214), the steel plate (221) being used for water diversion.

8. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 7, characterized in that: The steel plate (221) has multiple watering holes on the side away from the waterproof plate (222). A connecting block (224) is provided on the watering hole. A pipe (223) is connected to the connecting block (224). The end of the pipe (223) is located inside the flowerpot (154).

9. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 7, characterized in that: The steel plate (221) is in the shape of a U-shape.

10. The combined steel box girder and truss structure system for a large-span pedestrian overpass in municipal engineering according to claim 2, characterized in that: The support base (13) is a steel-concrete composite column.

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