Single-slit telescopic device

Abstract

The invention relates to the technical field of highway bridge expansion devices, in particular to a single-seam expansion device which comprises two pieces of wave-shaped boundary beam profile steel, the tops of the two pieces of wave-shaped boundary beam profile steel serve as panels, and a seam is formed between the two pieces of wave-shaped boundary beam profile steel; and the anchoring devices are arranged on the two opposite sides of the two pieces of boundary beam profile steel correspondingly, and the boundary beam profile steel is anchored to the upper structure of the highway or the bridge and stretches out and draws back along with the upper structure of the highway or the bridge. The whole boundary beam profile steel is of a wave-shaped structure, the top of the boundary beam profile steel is directly used as a traveling crane panel, a traditional structure with an additional wave panel is omitted, the overall strength and stability are improved, and damage caused by loose connection is avoided. Meanwhile, the wavy gaps enable vehicle tires to be in oblique staggered contact with the gaps all the time, the risk that the tires fall into the gaps at the same time is reduced, vehicle impact force and passing noise are effectively reduced, and driving smoothness and comfort are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of highway bridge expansion devices, and particularly to a single-slit expansion device. Background Art

[0002] Highway bridge expansion devices include side beams, middle beams, hook structures and displacement boxes. Both the side beams and the middle beams include bases and panels. The bases can be made of T-shaped steel or L-shaped steel, and the bases and the panels can be fixed by welding. Expansion gaps are formed between the opposite side walls of adjacent two panels.

[0003] In the prior art, the expansion device is improved from a straight shape to a wavy shape. When a vehicle tire passes through the expansion device, the wheel and the gap direction are both obliquely intersecting. In the case of oblique intersection, at any moment when a vehicle passes through the gap, the tires will not be in a state where both side wheels are completely stuck in the gap and lose support. Therefore, the impact on the beam body caused by the cross-gap movement is greatly reduced, and the noise is also reduced.

[0004] However, in the prior art, a wavy panel is additionally provided on the straight side beam and middle beam sections. The structure at the connection between the panel and the side beam is poor. When a vehicle passes by, it is subjected to a large impact force from the vehicle, has a short service life, the middle beam is relatively easy to break, and the noise caused by the passing of the vehicle is also large.

[0005] The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0006] The present invention provides a single-slit expansion device, thus effectively solving the problems in the background art.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: a single-slit expansion device, comprising: Two side beam sections, the two side beam sections are wavy, and the top of the side beam section serves as a panel, and there is a gap between the two side beam sections; An anchoring device, the anchoring device is respectively arranged on the opposite sides of the two side beam sections, and anchors the side beam sections to the upper structure of the highway or bridge, and expands and contracts with the upper structure of the highway or bridge.

[0008] Further, the cross-section of the side beam section along the wavy shape includes: A column, the column is vertically arranged and is located at one end of the panel away from the gap; A cross beam, the cross beam is arranged at one end of the column close to the gap; The panel, the upright column and the cross beam are of an integral structure and form an F-shaped structure.

[0009] Furthermore, the side beam section steel along the wavy cross section further includes a retaining edge, the retaining edge is vertically arranged at the panel and is located at one end close to the gap.

[0010] Furthermore, the retaining edge and the panel are of an integral structure.

[0011] Furthermore, the anchoring device includes: A plurality of anchor plates, the plurality of anchor plates are fixedly arranged on opposite sides of the two side beam section steels, the anchor plates are vertically arranged and extend towards one end away from the side beam section steel.

[0012] A plurality of anchor bars, the plurality of anchor bars are respectively arranged on each anchor plate, one end of each anchor bar is fixedly connected to the anchor plate, and the other end extends towards one end away from the anchor plate.

[0013] Furthermore, the anchor bar is of a U-shaped structure, and the open end is fixedly connected to the anchor plate.

[0014] Furthermore, the anchor bars are vertically arranged and fixed on one side of the anchor plate, and the anchor bars on each side beam section steel are fixed on the same side of the anchor plate.

[0015] Furthermore, the anchor bars on the two side beam section steels are fixed on opposite sides of the anchor plate.

[0016] Furthermore, a plurality of connecting structures are also arranged on the side beam section steel, the connecting structure includes a connecting plate and a bolt, the connecting plate is fixedly connected to the bottom of the side beam section steel, and the bolt is arranged on the connecting plate for connecting with the road or bridge structure at the bottom of the side beam section steel.

[0017] Furthermore, the connecting structures are arranged on opposite sides of the two side beam section steels and are located within the arc where the wavy structure of the side beam section steel bulges towards the gap.

[0018] The beneficial effects of the present invention are as follows: By adopting a wavy structure for the overall side beam section steel and directly using the top as the driving panel, the structure of the traditional additional wavy panel is omitted, the overall strength and stability are improved, and the damage caused by loose connection is avoided. At the same time, the wavy gap enables the vehicle tires to always be in an oblique staggered contact with the gap, reducing the risk of the tires falling into the gap simultaneously, effectively reducing the vehicle impact force and passing noise, and improving the driving smoothness and comfort. The anchoring device firmly fixes the side beam section steel to the upper structure of the bridge or road, ensures its synchronous expansion and contraction with the structure, avoids local stress concentration, improves the service life, and reduces the maintenance frequency. The overall structure is simple and reliable, and is suitable for popularization and application. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a side view of the side beam section steel; Figure 3 It is a structural schematic diagram of the anchoring device; Figure 4 For Figure 1 side view of; Figure 5 It is a partial enlarged view of the connection structure. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments.

[0022] As Figures 1 to 5 shown: A single-slit expansion device includes: Two side beam section steels 1, the two side beam section steels 1 are wavy, and the top of the side beam section steel 1 serves as the panel 11. There is a gap between the two side beam section steels 1; Anchoring devices 2, which are respectively arranged on the opposite sides of the two side beam section steels 1, anchor the side beam section steels 1 to the upper structure of the highway or bridge, and expand and contract with the upper structure of the highway or bridge.

[0023] By adopting a wavy structure for the overall side beam section steel 1 and directly using the top as the driving panel 11, the structure of the traditional additional wavy panel 11 is omitted, the overall strength and stability are improved, and the damage caused by loose connection is avoided. At the same time, the wavy gap enables the vehicle tires to always contact the gap obliquely and alternately, reducing the risk of the tires falling into the gap simultaneously, effectively reducing the vehicle impact force and passing noise, and improving the driving smoothness and comfort. The anchoring device 2 firmly fixes the side beam section steel 1 to the upper structure of the bridge or highway, ensures its synchronous expansion and contraction with the structure, avoids local stress concentration, improves the service life, and reduces the maintenance frequency. The overall structure is simple and reliable, and is suitable for popularization and application.

[0024] In this embodiment, the cross-section of the side beam section steel 1 along the wavy shape includes: The vertical column 12 is vertically arranged and located at one end of the panel 11 away from the gap; The cross beam 13 is arranged at one end of the vertical column 12 close to the gap; The panel 11, the vertical column 12 and the cross beam 13 are of an integral structure and form an F-shaped structure.

[0025] The side beam section steel 1 includes the vertical column 12, the cross beam 13 and the panel 11 along the wavy cross section. The three are of an integrally formed structure and form an F-shaped cross section. The vertical column 12 is vertically arranged at one end of the panel 11 away from the gap, providing good vertical bearing capacity and lateral displacement resistance; the cross beam 13 is arranged at one end of the vertical column 12 close to the gap, forming a rigid support and enhancing the overall bending and shear resistance of the structure. While ensuring the wavy shape, this F-shaped structure realizes the reasonable distribution of structural forces, avoids local stress concentration, and improves the overall stability and durability. The integral forming avoids the weak links caused by welding or connection, significantly improves the structural strength and fatigue resistance, and meets the use requirements of long-term repeated loads of vehicles.

[0026] As an optimization of the above embodiment, the cross section of the side beam section steel 1 along the wavy shape further includes a retaining edge 14. The retaining edge 14 is vertically arranged at the panel 11 and is located at one end close to the gap.

[0027] Wherein, the retaining edge 14 and the panel 11 are of an integral structure.

[0028] The side beam section steel 1 along the wavy cross section further includes a retaining edge 14. The retaining edge 14 is vertically arranged at one end of the panel 11 close to the gap and is integrally formed with the panel 11. This structure can effectively block foreign objects or gravel from entering the expansion joint when the vehicle passes, prevent debris accumulation from affecting the normal expansion and contraction of the device, and extend the service life of the device. At the same time, the cross beam 13 and the retaining edge form an open cavity, which is convenient for clamping and fixing the rubber sealing strip into the cavity. The integral structure design of the retaining edge 14 and the panel 11 avoids problems such as connection loosening or falling off, improves the overall structural stability and safety, and is suitable for high-frequency traffic load conditions.

[0029] In this embodiment, the anchoring device 2 includes: A plurality of anchor plates 21 are fixedly arranged on opposite sides of the two side beam section steels 1. The anchor plates 21 are vertically arranged and extend towards one end away from the side beam section steel 1.

[0030] A plurality of anchor bars 22 are respectively arranged on each anchor plate 21. One end of the anchor bar 22 is fixedly connected to the anchor plate 21, and the other end extends towards one end away from the anchor plate 21.

[0031] The anchoring device 2 includes several anchor plates 21 and anchor bars 22. The anchor plates 21 are vertically arranged on the opposite sides of the two side beam sections 1 and extend towards one end away from the side beam sections 1, providing a reliable anchoring interface. One end of the anchor bar 22 is fixedly connected to the anchor plate 21, and the other end extends outwards and is embedded in the superstructure of the bridge or highway, enhancing the connection strength between the side beam section 1 and the foundation structure. This structure can effectively transfer loads, ensure that the side beam section 1 expands and contracts synchronously with the bridge deck structure, and avoid structural damage caused by inconsistent displacements. At the same time, the force transmission path of the anchoring system is clear, the structural stability is high, the construction is convenient, and it is suitable for the bridge operation environment with complex loads and frequent deformations.

[0032] Among them, the anchor bar 22 is of a U-shaped structure, and the open end is fixedly connected to the anchor plate 21.

[0033] As a preference of the above embodiment, the anchor bar 22 is vertically arranged and fixed on one side of the anchor plate 21, and the anchor bars 22 on each side beam section 1 are fixed on the same side of the anchor plate 21.

[0034] The anchor bar 22 is of a U-shaped structure, the open end is fixedly connected to the anchor plate 21, and the whole is vertically arranged and fixed on the same side of the anchor plate 21. The U-shaped anchor bar 22 has stronger anti-pulling performance and anchoring force compared with the straight anchor bar 22, can effectively resist the displacement and impact force generated by the side beam section 1 under vehicle loads or temperature deformations, and improve the structural safety and stability. At the same time, the anchor bars 22 are uniformly arranged on one side of the anchor plate 21, which is convenient for construction layout and concrete pouring, improving the construction efficiency and project quality. This structural design is reasonable and has excellent mechanical properties, and is especially suitable for the anchoring scenarios in bridge structures that need to bear repeated loads and deformations for a long time.

[0035] Among them, the anchor bars 22 on the two side beam sections 1 are fixed on the opposite sides of the anchor plate 21.

[0036] The anchor bars 22 on the two side beam sections 1 are respectively fixed on the opposite sides of the anchor plate 21, making the anchoring structure symmetrically distributed in the transverse direction of the bridge deck. This layout helps to achieve the balanced sharing of structural forces, avoiding uneven stress concentration on one side causing unstable anchoring or side beam deformation. At the same time, the symmetrical setting improves the tensile and shear resistance performance of the entire expansion device under temperature changes and vehicle loads, enhances the coordinated expansion and contraction effect between the side beam section 1 and the bridge superstructure, and further improves the reliability and durability of the overall device. In addition, this structure is convenient for standardized layout and is suitable for various bridge types and construction conditions.

[0037] In this embodiment, several connecting structures 3 are also arranged on the side beam section 1. The connecting structure 3 includes a connecting plate 31 and a bolt 32. The connecting plate 31 is fixedly connected to the bottom of the side beam section 1, and the bolt 32 is arranged on the connecting plate 31 for connecting with the highway or bridge structure at the bottom of the side beam section 1.

[0038] Among them, the connection structure 3 is arranged on the opposite sides of the two side beam sections 1, and is located within the arc where the wavy structure of the side beam section 1 protrudes towards the gap.

[0039] A number of connection structures 3 are provided on the side beam section 1, including a connecting plate 31 fixedly connected to the bottom of the side beam section 1 and bolts 32 arranged on the connecting plate 31, which are used to firmly connect the side beam section 1 to the bridge or the superstructure of the highway. The connection structures 3 are arranged on the opposite sides of the two side beam sections 1, and preferably located within the arc where the wavy structure protrudes towards the gap, so as not to interfere with the structural appearance and the driving path, ensuring the overall structure of the expansion device is compact and the function is complete. On the one hand, this structure enhances the connection stability between the side beam and the bridge deck. On the other hand, by reasonably arranging the position, it avoids the bolts 32 protruding to affect vehicle passage, improves driving safety and comfort, and is also convenient for later installation and maintenance.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A single-slit telescopic device, characterized in that, Comprising: Two side beam steel sections, the two side beam steel sections are wavy, and the top of the side beam steel section serves as a panel, and there is a gap between the two side beam steel sections; An anchoring device, the anchoring device is respectively arranged on the opposite sides of the two side beam steel sections, anchors the side beam steel sections to the superstructure of a highway or a bridge, and expands and contracts along with the superstructure of the highway or the bridge.

2. The single-slit telescopic device according to claim 1, characterized in that, The cross-section of the side beam steel section along the wavy shape includes: A column, the column is vertically arranged and is located at one end of the panel away from the gap; A cross beam, the cross beam is arranged at one end of the column close to the gap; The panel, the column and the cross beam are of an integral structure and form an F-shaped structure.

3. The single-slit telescopic device according to claim 2, wherein The cross-section of the side beam steel section along the wavy shape further includes a retaining edge, the retaining edge is vertically arranged at the panel and is located at one end close to the gap.

4. The single-slit telescopic device according to claim 3, characterized in that, The retaining edge and the panel are of an integral structure.

5. The single-slit telescopic device according to claim 1, characterized in that, The anchoring device includes: A plurality of anchor plates, the plurality of anchor plates are fixedly arranged on the opposite sides of the two side beam steel sections, the anchor plates are vertically arranged and extend towards one end away from the side beam steel sections; A plurality of anchor bars, the plurality of anchor bars are respectively arranged on each anchor plate, one end of the anchor bar is fixedly connected to the anchor plate, and the other end extends towards one end away from the anchor plate.

6. The single-slit telescopic device according to claim 5, characterized in that, The anchor bar is of a U-shaped structure, and the open end is fixedly connected to the anchor plate.

7. The single-slit telescopic device according to claim 6, characterized in that The anchor bar is vertically arranged and is fixed on one side of the anchor plate, and the anchor bars on each side beam steel section are fixed on the same side of the anchor plate.

8. The single-slit telescopic device according to claim 7, characterized in that, The anchor bars on the two side beam steel sections are fixed on the opposite sides of the anchor plate.

9. The single-slit telescopic device according to claim 1, wherein, A plurality of connecting structures are further arranged on the side beam steel sections, the connecting structures include connecting plates and bolts, the connecting plates are fixedly connected to the bottom of the side beam steel sections, and the bolts are arranged on the connecting plates and are used for connecting with the highway or bridge structure at the bottom of the side beam steel sections.

10. The single-slit telescopic device according to claim 9, characterized in that, The connecting structures are arranged on the opposite sides of the two side beam steel sections and are located within the arc where the wavy structure of the side beam steel section bulges towards the gap.

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