A track beam suitable for a wide-body straddle-type monorail train without stabilizing wheels

Abstract

A track beam suitable for a wide-body straddle-type monorail train with no stabilizing wheels, comprising: an outer steel plate forming an open structure except for a top surface, having an inner cavity, and having a П-shaped cross section, and further comprising a П-shaped cross section top surface support, a П-shaped cross section first branch, and a П-shaped cross section second branch; a shear key provided on the inner wall of the outer steel plate; an embedded concrete structure, using the outer steel plate as a form, and being poured to the top surface of the П-shaped cross section top surface support; a stiffening rib having a hole and being provided in the П-shaped space formed by the П-shaped cross section top surface support, the П-shaped cross section first branch, and the П-shaped cross section second branch in a longitudinal direction at intervals; and an asphalt concrete paving layer provided on the П-shaped cross section top surface support. The track beam of the present application not only has a cross section that meets the requirements of a wide-body straddle-type monorail train with no stabilizing wheels, but also does not require formwork for manufacturing, reduces the internal reinforcement of the embedded concrete structure, is easy to manufacture, has a light self-weight, is convenient to transport and install, and has good working performance.

Description

Technical Field

[0001] This invention relates to the field of track beam bridge structure engineering technology, and in particular to a track beam suitable for wide-body straddle-type monorail trains without stabilizing wheels. Background Technology

[0002] Straddle-type monorail transit systems are highly adaptable to different environments, have fast construction speeds, and low project costs, giving them a strong competitive advantage and development potential in third- and fourth-tier cities in my country. To adapt to the long distances and high capacity characteristics of suburban rail transit, and to reduce the difficulty of tire replacement, wide-body straddle-type monorail trains, which eliminate the stabilizing wheels of traditional straddle-type monorail trains, have gradually gained market acceptance. As one of the three major systems of straddle-type monorail transit, the performance of the track beam bridge system is crucial to the system's operation. Because wide-body straddle-type monorail trains without stabilizing wheels eliminate the stabilizing wheels, the requirements for the cross-sectional structure of their track beams differ significantly from those of traditional straddle-type monorail trains. However, the range of track beams currently suitable for wide-body straddle-type monorail trains without stabilizing wheels is still quite limited.

[0003] Traditional track beams mostly use concrete sections, which are inexpensive, but their large self-weight makes them inconvenient for transportation, installation, and commissioning, and also unsuitable for crossing large spans. To reduce the self-weight of track beams and improve their crossing capacity, different types of steel structure track beams have been gradually developed. However, steel structure track beams still have problems such as high cost, high operating noise, and difficulty in climbing slopes due to low friction between the train wheels and the track surface, which currently limits their practical application.

[0004] Steel-concrete composite track beams, as a structural type that can fully utilize the characteristics of both steel and concrete, are well-known in the engineering field. Existing steel-concrete composite track beams mostly adopt a cross-sectional form of concrete encasing a steel box girder, which compensates for the heavy self-weight of concrete track beams and the insufficient climbing ability of steel structure track beams. However, problems still exist, such as overly complex formwork erection and dismantling, excessive reinforcement binding, and insufficient running surface comfort.

[0005] Therefore, in response to the problems existing in the prior art, this design actively researched and improved, resulting in the present invention of a track beam suitable for wide-body straddle-type monorail trains without stabilizing wheels. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as the large self-weight of concrete cross-section track beams, which makes them inconvenient for transportation, installation and commissioning, unsuitable for crossing large spans, and the high cost, high operating noise, and difficulty in climbing slopes due to the low friction between the train wheels and the track surface of steel structure track beams. This invention provides a track beam suitable for wide-body straddle-type monorail trains without stabilizing wheels.

[0007] To achieve the objective of this invention, the present invention provides a track beam suitable for wide-body straddle-type monorail trains without stabilizer wheels. The track beam for wide-body straddle-type monorail trains without stabilizer wheels comprises:

[0008] The outer steel plate forms an open structure except for the top surface. The outer steel plate has an inner cavity and a П-shaped cross-section. It further includes a П-shaped cross-section top surface support, and a П-shaped cross-section first branch and a П-shaped cross-section second branch arranged symmetrically about the central axis of the П-shaped cross-section top surface support.

[0009] Shear keys are housed in the inner cavity of the outer steel plate and are spaced apart on the inner wall of the outer steel plate;

[0010] An embedded concrete structure is constructed using the outer steel plate as a template and poured onto the top surface supported by the top surface of the П-shaped cross-section. The embedded concrete structure interlocks with the shear key.

[0011] The stiffening ribs have holes and are spaced longitudinally within the П-shaped space formed by the top surface of the П-shaped section, the first limb of the П-shaped section, and the second limb of the П-shaped section;

[0012] An asphalt concrete pavement layer is installed on the top support of the П-shaped cross-section.

[0013] Optionally, the shape of the outer steel plate is manufactured according to the cross-sectional outline shape and size requirements of the track beam of a wide-body straddle-type monorail train without stabilizer wheels.

[0014] Optionally, the top surface of the П-shaped section supports protruding beyond the outer side of the first and second limbs of the П-shaped section, further forming an anti-overturning extended short flange.

[0015] Optionally, a tack coat is provided between the embedded concrete structure and the asphalt concrete pavement layer.

[0016] Optionally, the tack coat oil is at least one of emulsified asphalt, coal tar pitch, or liquid petroleum asphalt.

[0017] In summary, the track beam of the present invention, suitable for wide-body straddle-type monorail trains without stable wheels, not only meets the requirements of wide-body straddle-type monorail trains without stable wheels in terms of cross-section, does not require the use of formwork for manufacturing, and reduces the internal reinforcement of the embedded concrete structure, making it easy to process and manufacture, but also has a light weight, is easy to transport and install, and has good working performance, making it worthy of promotion and use in the industry. Attached Figure Description

[0018] Figure 1 The figure shown is a schematic diagram of the cross-section of the track beam of the present invention applicable to wide-body straddle-type monorail trains without stabilizing wheels;

[0019] Figure 2 The figure shown is a schematic diagram of the longitudinal section of the track beam of the present invention applicable to wide-body straddle monorail trains without stabilizing wheels.

[0020] Figure 3 The diagram shown is a longitudinal elevation view of the track beam for a wide-body straddle-type monorail train without stabilizing wheels, according to the present invention. Detailed Implementation

[0021] To explain in detail the technical content, structural features, objectives, and effects of this invention, the following will provide a detailed description in conjunction with embodiments and accompanying drawings.

[0022] Please see Figures 1-3 , Figure 1 The diagram shows a cross-sectional view of the track beam for a wide-body straddle-type monorail train without stabilizing wheels, according to the present invention. Figure 2 The diagram shown is a longitudinal section of the track beam for a wide-body straddle-type monorail train without stabilizing wheels, according to the present invention. Figure 3 The diagram shown is a longitudinal elevation view of the track beam for a wide-body straddle-type monorail train without stabilizer wheels, according to the present invention. The track beam for the wide-body straddle-type monorail train without stabilizer wheels includes:

[0023] The outer steel plate 1 is formed by enclosing steel plates to form an open structure except for the top surface. The outer steel plate 1 has an inner cavity and a П-shaped cross-section. It further includes a П-shaped cross-section top surface support 10, and a П-shaped cross-section first branch 11 and a П-shaped cross-section second branch 12 arranged symmetrically with the central axis of the П-shaped cross-section top surface support 10.

[0024] Shear key 2, the shear key 2 is housed in the inner cavity of the outer steel plate 1 and is spaced apart on the inner wall of the outer steel plate 1;

[0025] An embedded concrete structure 3 is constructed using the outer steel plate 1 as a template and poured onto the top surface of the П-shaped cross-section top support 10. The embedded concrete structure 3 is engaged with the shear key 2.

[0026] The stiffening rib 4 has holes 40 and is arranged longitudinally at intervals within the П-shaped space formed by the П-shaped cross-section top surface support 10, the П-shaped cross-section first limb 11 and the П-shaped cross-section second limb 12;

[0027] The asphalt concrete pavement layer 5 is installed on the top surface support 10 of the П-shaped section and is used for the train's running wheels to travel.

[0028] As will be readily understood by those skilled in the art, the shape of the outer steel plate 1 is manufactured according to the cross-sectional outline shape and size requirements of the track beam of a wide-body straddle-type monorail train without stabilizer wheels. More specifically, the outer steel plate 1 is formed by steel plates enclosing an open structure except for the top surface. The outer steel plate 1 has an inner cavity, a П-shaped cross-section, and further includes a П-shaped cross-section top surface support 10, and a П-shaped cross-section first limb 11 and a П-shaped cross-section second limb 12 symmetrically arranged about the central axis of the П-shaped cross-section top surface support 10. The П-shaped cross-section top surface support 10 protrudes beyond the outer side of the П-shaped cross-section first limb 11 and the П-shaped cross-section second limb 12, further forming an anti-overturning extended short flange 101.

[0029] As a specific implementation, to improve the comfort of train operation on the track beam, preferably, the embedded concrete structure 3 uses the outer steel plate 1 as a template and is poured onto the top surface of the П-shaped cross-section top support 10, and an asphalt concrete pavement layer 5 is further provided on the П-shaped cross-section top support 10 of the outer steel plate 1. Simultaneously, to enhance the adhesion between the embedded concrete structure 3 and the asphalt concrete pavement layer 5, a tack coat is provided between the embedded concrete structure 3 and the asphalt concrete pavement layer 5. The tack coat is at least one of emulsified asphalt, coal tar pitch, and liquid petroleum asphalt.

[0030] To more intuitively reveal the technical solution of the present invention and highlight its beneficial effects, the structural composition and working principle of the track beam suitable for wide-body straddle-type monorail trains without stabilizing wheels are now described in conjunction with specific embodiments. In the specific embodiments, the structural forms, quantities, and connection methods of the functional components are merely examples and should not be regarded as limitations on the technical solution of the present invention.

[0031] The track beam of the present invention, applicable to wide-body straddle-type monorail trains without stabilizing wheels, uses an outer steel plate 1 as a template for an embedded concrete structure 3 and an asphalt concrete pavement layer 5, achieving formwork-free operation, saving templates, reducing structural weight, and providing anti-overturning restraint for the train. Shear keys 2 are provided on the inner wall of the outer steel plate 1, and the embedded concrete structure 3 is formed by casting, enabling the outer steel plate 1 and the embedded concrete structure 3 to work together, fully utilizing the advantages of steel-concrete materials and saving on internal reinforcement of the embedded concrete structure 3. Further asphalt concrete is provided on the top support 10 of the П-shaped section of the outer steel plate 1. The concrete pavement layer 5 effectively reduces noise and vibration between the running wheels and the track beam, improving the comfort of the track beam. The stiffening ribs 4 have holes 40, which are longitudinally spaced within the П-shaped space formed by the П-shaped top surface support 10, the first spur 11, and the second spur 12, effectively improving the torsional stiffness and integrity of the track beam. The reserved holes 40 and the П-shaped space formed by the П-shaped top surface support 10, the first spur 11, and the second spur 12 are reasonably applicable to the laying of straddle-type monorail power, communication, and other lines.

[0032] In summary, the track beam of the present invention, suitable for wide-body straddle-type monorail trains without stable wheels, not only meets the requirements of wide-body straddle-type monorail trains without stable wheels in terms of cross-section, does not require the use of formwork for manufacturing, and reduces the internal reinforcement of the embedded concrete structure, making it easy to process and manufacture, but also has a light weight, is easy to transport and install, and has good working performance, making it worthy of promotion and use in the industry.

[0033] Those skilled in the art will understand that various modifications and variations can be made to this invention without departing from its spirit or scope. Therefore, if any modification or variation falls within the scope of the appended claims and their equivalents, the invention is considered to cover such modifications and variations.

Claims

1. A track beam suitable for wide-body straddle-type monorail trains without stabilizing wheels, characterized in that, The track beam applicable to wide-body straddle-type monorail trains without stabilizer wheels includes: The outer steel plate forms an open structure except for the top surface. The outer steel plate has an inner cavity and a П-shaped cross-section. It further includes a П-shaped cross-section top surface support, and a П-shaped cross-section first branch and a П-shaped cross-section second branch arranged symmetrically about the central axis of the П-shaped cross-section top surface support. Shear keys are housed in the inner cavity of the outer steel plate and are spaced apart on the inner wall of the outer steel plate; An embedded concrete structure is constructed using the outer steel plate as a template and poured onto the top surface supported by the top surface of the П-shaped cross-section. The embedded concrete structure interlocks with the shear key. The stiffening ribs have holes and are spaced longitudinally within the П-shaped space formed by the top surface of the П-shaped section, the first limb of the П-shaped section, and the second limb of the П-shaped section; An asphalt concrete pavement layer is installed on the top support of the П-shaped section; The top surface of the П-shaped section supports protrusions outward from the first and second limbs of the П-shaped section, further forming an anti-overturning extended short flange.

2. The track beam as described in claim 1, applicable to wide-body straddle-type monorail trains without stabilizing wheels, characterized in that, The shape of the outer steel plate is manufactured according to the cross-sectional outline shape and size requirements of the track beam of a wide-body straddle-type monorail train without stabilizer wheels.

3. The track beam as described in claim 2, applicable to wide-body straddle-type monorail trains without stabilizing wheels, characterized in that... A tack coat is applied between the embedded concrete structure and the asphalt concrete pavement layer.

4. The track beam as described in claim 3, applicable to wide-body straddle-type monorail trains without stabilizing wheels, characterized in that, The tack coat oil is at least one of emulsified asphalt, coal tar pitch, or liquid petroleum asphalt.

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