Seamless expansion joint structure and bridge

Abstract

The present invention discloses a seamless expansion joint structure and a bridge, relating to the technical field of bridges. The seamless expansion joint structure includes an elastomer and a support beam. The elastomer is used to fill the beam gap of the bridge. The support beam is disposed at the bottom of the elastomer or within the elastomer and extends to the respective ends of the two girders corresponding to the beam gap to support the elastomer. The seamless expansion joint structure and the bridge have the characteristics of being able to improve driving comfort and driving smoothness.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and in particular, to a seamless expansion joint structure and a bridge. Background Art

[0002] With the growth of the modern transportation road network, the construction of bridges has developed rapidly. Due to the influence of structure, temperature, vehicle load, etc. on the bridge connection transition and displacement, expansion joint devices are widely used between beams to meet the displacement, waterproofing, dustproofing, noise reduction, connection and rotation of the beam body.

[0003] Generally, the expansion joint device needs to bear vertical pressure and horizontal force, as well as functions such as displacement and waterproofing. To meet these requirements, many expansion joint devices have emerged on the market, mainly modulus type and comb type. However, both of these two types of expansion joints have physical seams, and vehicles are prone to noise and vibration when passing through these seams, resulting in poor driving comfort.

[0004] Recently, some expansion joint devices without physical seams have also emerged. Most of them adopt the technology of integral vulcanization of steel plates and rubber, achieving seamless connection between beams, so that there is no physical seam at the connection, improving driving comfort. However, the main body of its expansion joint is composed of a combination of steel plates and rubber and is set at the beam joint. Due to its small stiffness, it is easy to bend and dent, affecting driving smoothness.

[0005] In view of this, it is particularly important to develop and design a seamless expansion joint structure and a bridge that can solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a seamless expansion joint structure and a bridge, which have the characteristics of improving driving comfort and driving smoothness.

[0007] The present invention provides a technical solution:

[0008] In a first aspect, an embodiment of the present invention provides a seamless expansion joint structure, which includes an elastic body and a support beam;

[0009] The elastic body is used to fill the beam joint of the bridge;

[0010] The support beam is arranged at the bottom of the elastic body or inside the elastic body, and extends to the respective ends of the two beam bodies corresponding to the beam joint to support the elastic body.

[0011] Combined with the first aspect, in another implementation manner of the first aspect, the seamless expansion joint structure further includes two sliding plates and a plurality of connecting bolts. The plurality of connecting bolts are used to connect the two sliding plates and the respective ends of the two beam bodies respectively, and the support beam is arranged on the top of the sliding plates.

[0012] Combined with the first aspect and its above implementation manners, in another implementation manner of the first aspect, the seamless expansion joint structure further includes a telescopic connecting body;

[0013] The telescopic connecting body can be telescopic in its length direction and is located inside the elastic body; the cross-section of the telescopic connecting body is arched and covers the top of the sliding plate to jointly form a sliding space with the top of the sliding plate, and the support beam is located in the sliding space and can slide on the sliding plate.

[0014] Combined with the first aspect and its above implementation manners, in another implementation manner of the first aspect, the telescopic connecting body is a cut bellows, and the telescopic connecting body is respectively connected to the two sliding plates.

[0015] Combined with the first aspect and its above implementation manners, in another implementation manner of the first aspect, a limiting boss protrudes from the middle section of the support beam, and the limiting boss extends downward and is located in the gap between the two beam bodies.

[0016] Combined with the first aspect and its above implementation manners, in another implementation manner of the first aspect, the seamless expansion joint structure further includes a connecting angle steel. A connecting hole is provided on one side of the connecting angle steel, and the connecting bolt passes through the connecting hole to connect one side of the connecting angle steel to the end of the beam body, and the sliding plate is connected to the connecting angle steel.

[0017] Combined with the first aspect and its above implementation manners, in another implementation manner of the first aspect, a plurality of the connecting holes are also provided on the other side of the connecting angle steel, and the elastic body extends into the connecting holes.

[0018] Combined with the first aspect and its above implementation manners, in another implementation manner of the first aspect, the sliding plate is connected to the vertical side of the connecting angle steel, and the sliding plate is located inside the elastic body.

[0019] In a second aspect, an embodiment of the present invention further provides a bridge, which includes the seamless expansion joint structure and a plurality of beam bodies. The seamless expansion joint structure includes an elastic body and a support beam; the elastic body is used to fill the beam gap of the bridge; the support beam is arranged at the bottom of the elastic body or inside the elastic body and extends to the respective ends of the two beam bodies corresponding to the beam gap to support the elastic body.

[0020] Combined with the second aspect, in the first implementation manner of the second aspect, a pre-embedded connecting body is preset at the end of the beam body, and the elastic body is threadedly connected to the pre-embedded connecting body through a connecting bolt.

[0021] Compared with the prior art, the beneficial effects of the seamless expansion joint structure provided by the embodiments of the present invention compared with the prior art include:

[0022] The seamless expansion joint structure includes an elastomer and a support beam. Among them, the elastomer is used to fill the beam gap of the bridge, and the support beam is arranged at the bottom or inside the elastomer, and the support beam extends to the respective ends of the two beam bodies corresponding to the beam gap, so as to support the elastomer. In this way, since the support beam is arranged inside the elastomer and the beam gap is filled with the elastomer, the gap at the position of the filled beam gap is small, thereby improving the driving comfort. And the support beam spans the gap between the two beam bodies, so that the elastomer can be better supported and it is not easy to have the situation of elastomer depression, improving the driving smoothness.

[0023] The beneficial effects of the bridge provided by the embodiments of the present invention compared with the prior art are the same as those of the above seamless expansion joint structure compared with the prior art, and will not be elaborated here.

[0024] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of the seamless expansion joint structure provided by the embodiments of the present invention applied to a bridge.

[0027] Figure 2 For Figure 1 It is a schematic cross-sectional structure diagram at A-A in

[0028] Figure 3 For Figure 1 It is a schematic cross-sectional structure diagram at B-B in

[0029] Reference numerals: 100 - bridge; 20 - beam body; 21 - embedded connecting body; 22 - beam gap; 10 - seamless expansion joint structure; 11 - elastomer; 12 - support beam; 121 - limiting boss; 13 - sliding plate; 15 - connecting bolt; 16 - telescopic connecting body; 161 - sliding space; 17 - connecting angle steel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the inventive product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. The terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0032] It should also be noted that unless otherwise clearly defined and limited, terms such as "arranged" and "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings.

[0034] Embodiment:

[0035] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the seamless expansion joint structure 10 provided by the embodiment of the present invention applied to the bridge 100.

[0036] An embodiment of the present invention provides a seamless expansion joint structure 10, which has the characteristics of improving driving comfort and driving stability. The seamless expansion joint structure 10 can be applied to the expansion joints of various buildings such as bridges 100 and the like.

[0037] When the seamless expansion joint structure 10 is applied to the bridge 100, the seamless expansion joint structure 10 is arranged in the beam joint 22 between two adjacent beam bodies 20, and it can completely fill the beam joint 22. In addition, a pre-embedded connector 21 can be preset at the end of the beam body 20, and the seamless expansion joint structure 10 can be threadedly connected to the pre-embedded connector 21 through a connecting bolt 15 for easy replacement. Since the bridge 100 adopts the seamless expansion joint structure 10 provided by the embodiment of the present invention, the bridge 100 also has the characteristics of improving driving comfort and driving stability.

[0038] The following will specifically introduce the structural composition, working principle and beneficial effects of the seamless expansion joint structure 10 provided by the embodiment of the present invention.

[0039] Please continue to refer to Figure 1 and refer to Figure 2 and Figure 3 Figure 2 For Figure 1 is a schematic cross-sectional view of the structure at A-A in Figure 3 For Figure 1 is a schematic cross-sectional view of the structure at B-B in

[0040] The seamless expansion joint structure 10 includes an elastomer 11 and a support beam 12. Among them, the elastomer 11 is used to fill the beam joint 22 of the bridge 100, and the support beam 12 is arranged at the bottom of the elastomer 11 or inside the elastomer 11, and the support beam 12 extends to the respective ends of the two beam bodies 20 corresponding to the beam joint 22. In other words, the support beam 12 straddles the gap between the two beam bodies 20 and is located above the bottom wall of the beam joint 22, so as to support the elastomer 11. In this way, since the support beam 12 is arranged inside the elastomer 11 and the beam joint 22 is filled with the elastomer 11, the gap at the position of the filled beam joint 22 is small, thereby improving driving comfort, and the support beam 12 straddles the gap between the two beam bodies 20, so that the elastomer 11 can be well supported and it is not easy to have the situation of the elastomer 11 sagging, improving driving stability.

[0041] The existing expansion joint devices are mainly modular and comb-tooth types, but for the expansion joints of these two structures, physical gaps will appear, and vehicles are prone to noise and vibration when passing through these gaps, and the driving comfort is poor. In this application, by setting the filled elastomer 11 and arranging the support beam 12 at the bottom of the elastomer 11 or inside the elastomer 11, larger gaps are avoided to improve the comfort of the new vehicle.

[0042] ​It should be noted that in this embodiment, the beam joint 22 refers to the space of the end notches of two adjacent beam bodies 20 and the gap between the ends of the two beam bodies 20, such as Figure 3 the space occupied by the elastomer 11 in Figure 3 . And in this embodiment, the seamless expansion joint structure 10 may have multiple support beams 12, and the multiple support beams 12 are arranged at intervals to jointly support the elastomer 11. In addition, in this embodiment, the material of the elastomer 11 is polyurethane, and in other embodiments, elastic materials such as rubber may also be used.

[0043] Furthermore, the seamless expansion joint structure 10 may further include two sliding plates 13 and multiple connecting bolts 15. The multiple connecting bolts 15 are used to connect the two sliding plates 13 and the ends of the two beam bodies 20 respectively, and the support beam 12 is arranged on the top of the sliding plate 13. In this way, when a relative displacement occurs between the beam bodies 20, the support beam 12 can slide on the sliding plate 13, so as to maintain a stable support for the elastomer 11 and separate the support beam 12 from the beam body 20, avoiding damage to the beam body 20 due to the sliding of the support beam 12 relative to the beam body 20.

[0044] It should be noted that in this embodiment, there is a gap between the two ends of the support beam 12 and the side wall of the beam joint 22 to adapt to the situation of relative displacement between the beam bodies 20. In addition, the embedded connecting body 21 is an embedded sleeve, and the connecting bolt 15 is threadedly connected to the embedded sleeve, so as to connect the elastomer 11 in the beam joint 22. Compared with the connection methods of welding or anchoring, this connection method is convenient for replacement and not easily subject to fatigue damage. Secondly, due to the use of a threaded connection method, the elastomer 11 is not easily damaged during the installation process.

[0045] Furthermore, the seamless expansion joint structure 10 may further include a telescopic connecting body 16. Among them, the telescopic connecting body 16 can be telescopic in its length direction, and the telescopic connecting body 16 is located inside the elastomer 11. The cross-section of the telescopic connecting body 16 is arched and covers the top of the sliding plate 13. In this way, the telescopic connecting body 16 and the top of the sliding plate 13 can jointly enclose a sliding space 161, and the support beam 12 is located in the sliding space 161 and can slide on the sliding plate 13. Thus, the elastomer 11 and the support beam 12 are separated by the telescopic connecting body 16, which is convenient for the support beam 12 to slide in the sliding space 161, and there is no connection between the support beam 12 and the elastomer 11. When the support beam 12 slides relative to the beam body 20, the support beam 12 does not affect the shape of the elastomer 11. In addition, the telescopic connecting body 16 improves the vertical stiffness and telescopic performance of the seamless expansion joint structure 10, making the elastomer 11 not easily bend or dent, and further improving the driving smoothness.

[0046] It should be noted that in this embodiment, the telescopic connecting body 16 is a cut bellows to increase the connection strength between the telescopic connecting body 16 and the elastic body 11, so that the telescopic connecting body 16 is not easily separated from the elastic body 11. Moreover, the telescopic connecting body 16 can also be respectively connected to the two sliding plates 13 to increase the connection firmness of the seamless expansion joint structure 10.

[0047] In other embodiments, the telescopic connecting body 16 can also be composed of multiple pipe bodies. In addition, in this embodiment, the cross-section of the telescopic connecting body 16 is semi-circular. In other embodiments, the cross-section of the telescopic connecting body 16 can also be in the shape of an inverted U-shaped, etc. The shape of the cross-section of the support beam 12 matches the shape of the cross-section of the telescopic connecting body 16 to fully support the telescopic connecting body 16 when the telescopic connecting body 16 is pressed down.

[0048] Please continue to refer to Figure 2 and Figure 3 , a limiting boss 121 can be protrudingly provided in the middle section of the support beam 12. Moreover, the limiting boss 121 extends downward and is located in the gap between the two beam bodies 20. Or rather, the limiting boss 121 is located between the two adjacent ends of the two beam bodies 20. In this way, during the telescopic process of the seamless expansion joint structure 10, the limiting protrusion can play a role in limiting the beam body 20, avoiding excessive compression of the elastic body 11 by the beam body 20. And when relative displacement occurs, the limiting boss 121 can drive the support beam 12 to move under the abutting action of the end of the beam body 20, so that the support beam 12 is always roughly corresponding to the beam gap 22, thereby stably supporting the elastic body 11.

[0049] It should be noted that in this embodiment, the middle section refers to the position corresponding to the middle equal part when the corresponding object is divided into three equal parts along its length direction.

[0050] Furthermore, the seamless expansion joint structure 10 can also include a connecting angle steel 17. A connecting hole (not labeled in the figure) is provided on one side of the connecting angle steel 17, and the connecting bolt 15 passes through the connecting hole, thereby connecting one side of the connecting angle steel 17 to the end of the beam body 20, and the sliding plate 13 is connected to the connecting angle steel 17. In other words, one side of the connecting angle steel 17 is horizontally connected to the bottom wall of the beam gap 22, and the other side is vertically arranged. Since the two sides of the connecting angle steel 17 are arranged at an angle, this makes the surface area of the elastic body 11 wrapping the connecting angle steel 17 larger, so as to increase the connection firmness between the elastic body 11 and the connecting angle steel 17 as well as the sliding plate 13.

[0051] On the other side of the connecting angle steel 17, a plurality of connecting holes (not shown in the figure) may also be provided, and the elastic body 11 extends into the connecting holes. In other words, a plurality of connecting holes are also provided on the vertical side of the connecting angle steel 17, and the elastic body 11 wraps the connecting angle steel 17 at the position of the connecting holes, thereby enhancing the connection firmness between the elastic body 11 and the connecting angle steel 17. In addition, the number of connecting holes on the horizontal side of the connecting angle steel 17 may also be more than the number of connecting bolts 15, and the elastic body 11 may also extend into some of the connecting holes on the horizontal side, further improving the overall connection performance of the seamless expansion joint structure 10.

[0052] Further, in this embodiment, the sliding plate 13 is connected to the vertical side of the connecting angle steel 17, and the sliding plate 13 is located inside the elastic body 11. In other words, the bottom of the sliding plate 13 also has the elastic body 11, so that the elastic body 11 completely wraps the sliding plate 13 and the telescopic connecting body 16, so as to further make the elastic body 11 not easily separated from the connecting angle steel 17, the sliding plate 13 and the telescopic connecting body 16, and improve the overall connection performance of the seamless expansion joint structure 10.

[0053] In addition, the telescopic connecting body 16, the sliding plate 13 and the connecting angle steel 17 can be connected into one body to further improve the overall connection performance of the seamless expansion joint structure 10.

[0054] It should be noted that in other embodiments, the sliding plate 13 can also be welded to the horizontal side of the connecting angle steel 17, the telescopic connecting body 16 can be welded to the two sides of the connecting angle steel 17. In addition, the telescopic connecting body 16, the sliding plate 13, the support beam 12 and the connecting angle steel 17 can be assembled in the factory or on site.

[0055] The working principle of the expansion joint structure provided by the embodiment of the present invention is as follows:

[0056] The seamless expansion joint structure 10 includes an elastic body 11 and a support beam 12. Among them, the elastic body 11 is used to fill the beam gap 22 of the bridge 100, and the support beam 12 is arranged at the bottom of the elastic body 11 or inside the elastic body 11, and the support beam 12 extends to the respective ends of the two beam bodies 20 corresponding to the beam gap 22, thereby supporting the elastic body 11. In this way, since the support beam 12 is arranged inside the elastic body 11 and the beam gap 22 is filled with the elastic body 11, the gap at the position of the filled beam gap 22 is small, thereby improving the driving comfort, and the support beam 12 spans the gap between the two beam bodies 20, so that the elastic body 11 can be well supported and it is not easy to have the situation of the elastic body 11 sagging, improving the driving smoothness.

[0057] To sum up:

[0058] The embodiment of the present invention provides an expansion joint structure, which has the characteristics of improving driving comfort and driving smoothness.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the features in the above embodiments can be combined with each other without conflict, and the present invention can also have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. Moreover, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A seamless expansion joint structure, characterized in that, It includes an elastomer (11) and a support beam (12); The elastomer (11) is used to fill the beam joint (22) of the bridge (100); The support beam (12) is arranged at the bottom of the elastomer (11) or inside the elastomer (11), and extends to the respective ends of the two beam bodies (20) corresponding to the beam joint (22) to support the elastomer (11); A limiting boss (121) protrudes from the middle section of the support beam (12), and the limiting boss (121) extends downward and is located in the gap between the two beam bodies (20); The seamless expansion joint structure (10) further includes two sliding plates (13) and a plurality of connecting bolts (15). The plurality of connecting bolts (15) are used to connect the two sliding plates (13) and the respective ends of the two beam bodies (20) respectively, and the support beam (12) is arranged on the top of the sliding plates (13); The seamless expansion joint structure (10) further includes an expansion connecting body (16); the expansion connecting body (16) can expand and contract in its length direction and is located inside the elastomer (11); the cross-section of the expansion connecting body (16) is arched and covers the top of the sliding plates (13) to jointly form a sliding space (161) with the top of the sliding plates (13). The support beam (12) is located in the sliding space (161) and can slide on the sliding plates (13); The seamless expansion joint structure (10) further includes a connecting angle steel (17). A connecting hole is opened on one side of the connecting angle steel (17), and the connecting bolt (15) passes through the connecting hole to connect one side of the connecting angle steel (17) to the end of the beam body (20), and the sliding plate (13) is connected to the connecting angle steel (17).

2. The seamless expansion joint structure according to claim 1, wherein The expansion connecting body (16) is a cut bellows, and the expansion connecting body (16) is respectively connected to the two sliding plates (13).

3. The seamless expansion joint structure according to claim 1, characterized in that, A plurality of the connecting holes are also opened on the other side of the connecting angle steel (17), and the elastomer (11) extends into the connecting holes.

4. The seamless expansion joint structure according to claim 1, wherein, The sliding plate (13) is connected to the vertical side of the connecting angle steel (17), and the sliding plate (13) is located inside the elastomer (11).

5. A bridge, characterized in that, It includes the seamless expansion joint structure according to any one of claims 1-4 and a plurality of beam bodies (20).

6. The bridge according to claim 5, characterized in that, An embedded connecting body (21) is preset at the end of the beam body (20), and the elastomer (11) is threadedly connected to the embedded connecting body (21) through a connecting bolt (15).

Images