Stainless steel core plate bridge deck structure

Abstract

The utility model provides a stainless steel core plate bridge deck structure which comprises a stainless steel top plate, a stainless steel bottom plate, a stainless steel core pipe and a core plate outer frame. The stainless steel top plate and the stainless steel bottom plate are vertically arranged in parallel, a plurality of stainless steel core pipes are vertically arranged between the stainless steel top plate and the stainless steel bottom plate and form a plane for supporting the stainless steel top plate, and the two ends of each stainless steel core pipe are welded to the stainless steel top plate and the stainless steel bottom plate respectively. The core plate outer frame is welded to the periphery between the stainless steel top plate and the stainless steel bottom plate. The stainless steel core plate bridge deck is high in structural strength, low in manufacturing cost, good in durability, high in construction speed and high in popularization value.

Description

Technical Field

[0001] This utility model relates to the field of bridge technology, specifically to a stainless steel core plate bridge deck structure suitable for pedestrian bridges. Background Technology

[0002] Pedestrian overpasses typically have marble or wooden flooring on the deck, with the traditional underlying structural layer being reinforced concrete or a steel-concrete composite structure. Reinforced concrete structures require scaffolding for pouring and have a long construction period, significantly impacting traffic across the road during construction. Steel-concrete composite structures, on the other hand, use a steel plate at the bottom that not only bears the load but also serves as formwork for the upper reinforced concrete, eliminating the need for scaffolding and shortening the construction period, making it the most commonly used pedestrian overpass deck structure. While steel-concrete composite structures offer convenience in construction, their load-bearing advantages are not fully realized due to the small span of the overpass deck, resulting in a significant increase in steel consumption and a cost more than twice that of ordinary reinforced concrete bridge deck structures. Furthermore, the bottom steel plate has poor corrosion resistance and durability. Utility Model Content

[0003] In view of the above, this utility model provides a stainless steel core plate bridge deck structure, which has high strength, low cost, good durability, and fast construction speed, and has great promotional value.

[0004] The technical solution of this utility model:

[0005] This utility model provides a stainless steel core plate bridge deck structure, including a stainless steel top plate, a stainless steel bottom plate, stainless steel core tubes, and an outer frame of the core plate. The stainless steel top plate and the stainless steel bottom plate are arranged parallel to each other vertically. Multiple stainless steel core tubes are erected between the stainless steel top plate and the stainless steel bottom plate, forming a plane supporting the stainless steel top plate. The two ends of each stainless steel core tube are welded to the stainless steel top plate and the stainless steel bottom plate respectively. The outer frame of the core plate is welded to the perimeter between the stainless steel top plate and the stainless steel bottom plate.

[0006] Furthermore, multiple stainless steel core tubes are evenly arranged in multiple rows along the length direction and in multiple columns along the width direction on a stainless steel base plate.

[0007] Furthermore, the stainless steel top plate, stainless steel bottom plate, stainless steel core tube, and outer frame of the core plate are connected as a whole by copper brazing.

[0008] Furthermore, for bridge deck spans within 5m, the stainless steel core tubes have a diameter of 51mm, a wall thickness of 0.3mm, a height of 150mm, and are arranged in a rectangular pattern with a spacing of 100mm.

[0009] Furthermore, both the stainless steel top plate and the stainless steel bottom plate are 2.5mm thick, and the outer frame of the core plate is made of 2.5mm thick stainless steel plate.

[0010] Furthermore, the dimensions of a single stainless steel core plate bridge deck structure are 2-3m wide and 10-15m long.

[0011] Furthermore, the stainless steel core plate bridge deck structure is connected to the bridge crossbeams and bridge longitudinal beams via fillet welds.

[0012] Furthermore, cold joints are used between the stainless steel core plate bridge deck structures, which are fixed with epoxy resin adhesive.

[0013] Furthermore, it also includes a waterproof layer laid on the stainless steel roof plate. The waterproof layer has a double-layer structure, with a waterproof coating as the bottom layer and a waterproof membrane as the top layer.

[0014] Furthermore, it also includes a paving layer laid on top of the waterproof layer, which is a cement mortar leveling layer with marble laid on top.

[0015] The stainless steel core plate bridge deck structure provided by this utility model exhibits many significant advantages compared to traditional bridge deck structures:

[0016] I. High strength and light weight: The bridge deck structure is made of stainless steel, with multiple stainless steel core tubes forming the supporting plane, resulting in high overall structural strength and the ability to withstand large loads. Meanwhile, its core plate weighs only 0.4-0.5 t / m². 2 It weighs only 10-20% of that of traditional concrete bridge deck structures, greatly reducing its weight and making it easier to transport and install.

[0017] Second, low cost: By manufacturing components in a factory and welding them into blocks using robotic vehicles, and then assembling them on-site without scaffolding, the construction process is simplified and the cost is significantly reduced. Statistics show that the cost of this bridge deck structure is 20-50% lower than traditional bridge deck structures, demonstrating high economic efficiency.

[0018] Third, the construction speed is fast: Due to the adoption of modular design and factory production methods, the construction speed of this bridge deck structure is greatly accelerated. There is no need for complex scaffolding construction and concrete pouring on site; only simple assembly and hoisting are required, thereby shortening the construction period and improving construction efficiency.

[0019] IV. Excellent durability and long service life: Stainless steel has excellent corrosion resistance, enabling it to withstand the erosion of various harsh environments. Therefore, this bridge deck structure can maintain good performance during use, extending its service life and reducing the frequency of maintenance and replacement.

[0020] V. Strong resistance to overload and earthquakes: The design fully considers the needs of overloaded trucks and earthquake resistance, giving the bridge deck structure high resistance to overload and earthquakes. Specifically, the core bridge is designed to withstand the passage of 150-ton overloaded trucks without damage, with an elongation rate of ≥40%, ensuring the safety and stability of the structure.

[0021] VI. Green, environmentally friendly, and recyclable: The core panels of this bridge deck structure are recyclable, conforming to the concept of green environmental protection. It requires almost no maintenance during operation, reducing its environmental impact and saving on maintenance costs.

[0022] In summary, the stainless steel core plate bridge deck structure provided by this utility model has significant advantages such as high strength, light weight, low cost, fast construction speed, good durability, long service life, strong resistance to overload and seismic activity, as well as being green, environmentally friendly, and recyclable. It has broad market application prospects and promotional value.

[0023] The preferred embodiments of this utility model and their beneficial effects will be further described in detail in conjunction with specific implementation methods. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but should not be construed as limiting the present invention. In the drawings:

[0025] Figure 1 This is a schematic diagram of the stainless steel core plate bridge deck structure of this utility model;

[0026] Figure 2 This is a diagram showing the arrangement of the stainless steel core tubes on the stainless steel base plate in the stainless steel core plate bridge deck structure of this utility model.

[0027] Figure 3 This is a schematic diagram showing the connection between the stainless steel core plate bridge deck structure and the bridge beam of this utility model.

[0028] Figure 4 This is a schematic diagram showing the connection between the stainless steel core plate bridge deck structure of this utility model and the longitudinal beam of the bridge.

[0029] Figure 5 This is a schematic diagram of the stainless steel core plate bridge deck structure of this utility model, which includes a waterproof layer and a paving layer.

[0030] The following are the reference numerals: 100 for stainless steel core plate bridge deck structure, 101 for stainless steel top plate, 102 for stainless steel bottom plate, 103 for stainless steel core tube, 104 for core plate outer frame, 105 for bridge crossbeam, 106 for fillet weld, 107 for bridge longitudinal beam, 110 for epoxy resin adhesive, 108 for waterproof layer, and 109 for paving layer. Detailed Implementation

[0031] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0032] Please see Figure 1 and Figure 2 This utility model provides a stainless steel core plate bridge deck structure 100, including a stainless steel top plate 101, a stainless steel bottom plate 102, stainless steel core tubes 103, and a core plate outer frame 104. The stainless steel top plate 101 and the stainless steel bottom plate 102 are arranged parallel vertically. Multiple stainless steel core tubes 103 are erected between the top plate 101 and the bottom plate 102, forming a plane supporting the top plate 101. Both ends of each stainless steel core tube 103 are welded to the top plate 101 and the bottom plate 102, respectively. The core plate outer frame 104 is welded around the perimeter between the top plate 101 and the bottom plate 102.

[0033] The stainless steel core plate bridge deck structure 100 provided by this utility model exhibits many significant advantages compared to traditional bridge deck structures:

[0034] I. High strength and light weight: The bridge deck structure is made of stainless steel, and multiple stainless steel core tubes (103) form a supporting plane, resulting in high overall structural strength and the ability to withstand large loads. Meanwhile, its core plate weighs only 0.4-0.5 t / m². 2 It weighs only 10-20% of that of traditional concrete bridge deck structures, greatly reducing its weight and making it easier to transport and install.

[0035] Second, low cost: By manufacturing components in a factory and welding them into blocks using robotic vehicles, and then assembling them on-site without scaffolding, the construction process is simplified and the cost is significantly reduced. Statistics show that the cost of this bridge deck structure is 20-50% lower than traditional bridge deck structures, demonstrating high economic efficiency.

[0036] Third, the construction speed is fast: Due to the adoption of modular design and factory production methods, the construction speed of this bridge deck structure is greatly accelerated. There is no need for complex scaffolding construction and concrete pouring on site; only simple assembly and hoisting are required, thereby shortening the construction period and improving construction efficiency.

[0037] IV. Excellent durability and long service life: Stainless steel has excellent corrosion resistance, enabling it to withstand the erosion of various harsh environments. Therefore, this bridge deck structure can maintain good performance during use, extending its service life and reducing the frequency of maintenance and replacement.

[0038] V. Strong resistance to overload and earthquakes: The design fully considers the needs of overloaded trucks and earthquake resistance, giving the bridge deck structure high resistance to overload and earthquakes. Specifically, the core bridge is designed to withstand the passage of 150-ton overloaded trucks without damage, with an elongation rate of ≥40%, ensuring the safety and stability of the structure.

[0039] VI. Green, environmentally friendly, and recyclable: The core panels of this bridge deck structure are recyclable, conforming to the concept of green environmental protection. It requires almost no maintenance during operation, reducing its environmental impact and saving on maintenance costs.

[0040] In summary, the stainless steel core plate bridge deck structure 100 provided by this utility model has significant beneficial effects such as high strength, light weight, low cost, fast construction speed, good durability, long service life, strong resistance to overload and seismic activity, as well as being green, environmentally friendly and recyclable. It has broad market application prospects and promotion value.

[0041] In this embodiment, multiple stainless steel core tubes 103 are evenly arranged in multiple rows along the length direction and multiple columns along the width direction on the stainless steel base plate 102. By evenly arranging the stainless steel core tubes 103, the entire bridge deck structure can distribute the load more evenly when under stress, avoiding structural damage caused by excessive local stress, thereby improving the overall structural stability. The even arrangement of the stainless steel core tubes 103 allows the bridge deck structure to better distribute pressure when bearing heavy loads, improving its load-bearing capacity. This design is particularly suitable for applications requiring the bearing of large loads, such as bridges and roads. The arrangement of the stainless steel core tubes 103 makes the assembly and disassembly of the bridge deck structure more convenient, reducing construction difficulty and maintenance costs. At the same time, this design also facilitates regular inspection and maintenance of the bridge deck structure, ensuring its long-term reliability.

[0042] In this embodiment, the stainless steel top plate 101, stainless steel bottom plate 102, stainless steel core tube 103, and core plate outer frame 104 are connected as a whole by copper brazing. Copper brazing provides high strength and excellent sealing, effectively and firmly connecting the stainless steel top plate, bottom plate, core tube, and core plate outer frame together to form a unified structure. This connection method significantly enhances the overall strength and stability of the bridge deck structure, improving its load-bearing capacity and service life. Copper brazing material has excellent thermal conductivity, effectively transferring heat. When the bridge deck structure is heated, copper brazing effectively distributes heat to various components, preventing structural deformation caused by localized overheating. Stainless steel itself has excellent corrosion resistance, which is further enhanced by copper brazing. Copper brazing material forms a dense protective layer, preventing external corrosive substances from eroding the bridge deck structure, thus extending its service life. Assembly using copper brazing eliminates the need for complex bolt connections or welding processes, greatly simplifying the construction process. This connection method not only improves construction efficiency but also reduces construction costs.

[0043] In this embodiment, the bridge deck span is within 5m. The stainless steel core tubes 103 have a diameter of 51mm, a wall thickness of 0.3mm, and a height of 150mm, arranged in rectangles with a spacing of 100mm. Both the stainless steel top plate 101 and the stainless steel bottom plate 102 are 2.5mm thick. The outer frame 104 of the core plate is made of 2.5mm thick stainless steel plate. The design of the stainless steel core tubes 103—51mm diameter, 0.3mm wall thickness, and 150mm height—and their 100mm-spaced rectangular arrangement, allows for a more even distribution of pressure on the bridge deck structure under load, thereby improving the overall structural strength. By controlling the bridge deck span to within 5m, combined with the specifications and arrangement of the stainless steel core tubes, the bridge deck structure maintains a relatively light weight while possessing good load-bearing capacity. This design is particularly suitable for small bridges or pedestrian walkways, meeting usage requirements while reducing construction costs.

[0044] The stainless steel core plate bridge deck structure 100 provided by this utility model can be automatically produced and assembled on a factory assembly line. Each stainless steel core plate bridge deck structure 100 has a width of 2-3m and a length of 10-15m. This standardized size design facilitates transportation, installation, and subsequent maintenance. At the same time, the standardized size also allows this bridge deck structure to be widely used in the construction of different types of bridges, improving its versatility and applicability.

[0045] Please see Figure 3 and Figure 4The stainless steel core plate bridge deck structure 100 provided by this utility model is transported from the factory to the construction site, and then hoisted and spliced ​​onto the bridge deck in sections. The stainless steel core plate bridge deck structure 100 is connected to the bridge crossbeam 105 by fillet welds 106; the stainless steel core plate bridge deck structure 100 is also connected to the bridge longitudinal beam 107 by fillet welds 106.

[0046] Please see Figure 5 The stainless steel core panels of the bridge deck structure 100 are joined by cold joints and fixed with epoxy resin adhesive 110. The use of cold joints ensures a tight connection between the stainless steel core panels, forming a unified whole. This connection method not only improves the integrity and stability of the bridge deck structure but also effectively prevents cracking or deformation at the joints due to uneven stress. Epoxy resin adhesive 110 has excellent bonding strength and corrosion resistance, ensuring the strength and durability of the joints. Even under long-term environmental erosion or loads, the joints maintain good performance during long-term use, extending the service life of the bridge deck structure.

[0047] The stainless steel core plate bridge deck structure 100 provided by this utility model also includes a waterproof layer 108 laid on a stainless steel top plate 101. To ensure the durability of the waterproof layer and considering the impact of bridge vibration, the waterproof layer 108 adopts a double-layer structure, with a waterproof coating as the bottom layer and a waterproof membrane as the top layer.

[0048] The stainless steel core plate bridge deck structure 100 provided by this utility model also includes a paving layer 109 laid on the waterproof layer 108, and the paving layer 109 is a cement mortar leveling and marble laying layer.

[0049] The key feature of the stainless steel core plate bridge deck structure 100 provided by this utility model is the utilization of the high load-bearing capacity and low steel consumption of the stainless steel core tube 103, which can be mass-produced in an automated factory at low cost. Simultaneously, the precise copper brazing operated by robots ensures the weld quality of the small components, making the stainless steel core tube 103, stainless steel top plate 101, stainless steel bottom plate 102, and core plate outer frame 104 form a solid whole that can resist high-frequency vibrations of the bridge. The waterproof layer 108 on the stainless steel top plate 101 adopts a double-layer structure, mainly considering that the joints of the segmented stainless steel core plate bridge deck structure are prone to fatigue damage under bridge vibrations. The double-layer waterproof structure can compensate for this defect and ensure the durability of the stainless steel core plate.

[0050] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying importance; the words "bottom surface" and "top surface," "inner" and "outer" respectively refer to the geometric direction toward or away from a specific component.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A stainless steel core plate bridge deck structure, characterized in that, It includes a stainless steel top plate (101), a stainless steel bottom plate (102), a stainless steel core tube (103), and a core plate outer frame (104). The stainless steel top plate (101) and the stainless steel bottom plate (102) are arranged in parallel vertically. Multiple stainless steel core tubes (103) are erected between the stainless steel top plate (101) and the stainless steel bottom plate (102). The multiple stainless steel core tubes (103) form a plane supporting the stainless steel top plate (101). The two ends of each stainless steel core tube (103) are respectively welded to the stainless steel top plate (101) and the stainless steel bottom plate (102). The core plate outer frame (104) is welded around the stainless steel top plate (101) and the stainless steel bottom plate (102).

2. The stainless steel core plate bridge deck structure according to claim 1, characterized in that, Multiple stainless steel core tubes (103) are evenly arranged in multiple rows along the length direction and in multiple columns along the width direction on a stainless steel base plate (102).

3. The stainless steel core plate bridge deck structure according to claim 1, characterized in that, The stainless steel top plate (101), stainless steel bottom plate (102), stainless steel core tube (103), and core plate outer frame (104) are connected into a whole by copper brazing.

4. The stainless steel core plate bridge deck structure according to claim 1, characterized in that, The bridge deck span is within 5m. The stainless steel core tube (103) has a diameter of 51mm, a wall thickness of 0.3mm, a height of 150mm, and is arranged in a rectangular pattern with a spacing of 100mm.

5. The stainless steel core plate bridge deck structure according to claim 4, characterized in that, The stainless steel top plate (101) and stainless steel bottom plate (102) are both 2.5mm thick, and the outer frame (104) of the core plate is made of 2.5mm thick stainless steel plate.

6. The stainless steel core plate bridge deck structure according to claim 1, characterized in that, The dimensions of a single stainless steel core plate bridge deck structure (100) are 2-3m wide and 10-15m long.

7. The stainless steel core plate bridge deck structure according to claim 1, characterized in that, The stainless steel core plate bridge deck structure (100) is connected to the bridge crossbeam (105) and the bridge longitudinal beam (107) by fillet welds (106).

8. The stainless steel core plate bridge deck structure according to claim 1, characterized in that, The stainless steel core plate bridge deck structure (100) is connected by cold joints and fixed with epoxy resin adhesive (110).

9. The stainless steel core plate bridge deck structure according to claim 1, characterized in that, It also includes a waterproof layer (108) laid on a stainless steel top plate (101). The waterproof layer (108) has a double-layer structure, with a waterproof coating at the bottom and a waterproof membrane at the top.

10. The stainless steel core plate bridge deck structure according to claim 9, characterized in that, It also includes a paving layer (109) laid on the waterproof layer (108), which is a cement mortar leveling layer for laying marble.

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