An assembled bridge guardrail

Abstract

The present invention relates to the technical field of bridge anti-collision guardrails, and particularly relates to an assembled bridge guardrail installed on a bridge deck, which includes: connecting screws, a plurality of which are arranged in parallel and penetrate through the bridge deck; connecting columns, which are of a hollow structure. The connecting columns are installed on the bridge deck through the connecting screws. A positioning bolt is installed in the cavity of the connecting column. The positioning bolt is coaxially arranged with the connecting column and extends from the top of the connecting column to the outside of the connecting column; a guardrail body, on which a connecting sleeve is installed. The connecting sleeve is sleeved on the connecting column, and the inner diameter of the connecting sleeve is larger than the outer diameter of the connecting column. The first concrete is poured between the connecting sleeve and the connecting column. During the installation of the bridge guardrail, it is only necessary to drill holes on the existing bridge deck. At the same time, the inner diameter of the connecting sleeve is larger than the outer diameter of the connecting column, so the hoisting accuracy requirement for the guardrail body is relatively low, the installation is more convenient, the construction is simple, and the construction period for installing the bridge guardrail on the existing bridge can be shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge anti-collision guardrails, and particularly to an assembled bridge guardrail. Background Art

[0002] As a new construction technology for bridge concrete guardrails, precast and assembled concrete anti-collision guardrails have advantages that cannot be compared with traditional construction technologies, such as factory prefabrication, standardized construction, and rapid installation. They can effectively solve the interference to the traffic under the bridge during the construction of urban bridges, and have significant advantages such as high efficiency, energy conservation, and environmental protection.

[0003] At present, the anti-collision guardrails on some existing bridges with earlier construction cannot meet the requirements of existing codes due to their early installation and need to be maintained and replaced. If the anti-collision guardrails on the bridge are demolished and re-cast, due to the slow construction speed of the cast-in-place structure, it is easy to cause on-site pollution. Moreover, since existing bridges are all in use, a too long construction period will cause greater interference to on-site traffic. The assembled anti-collision guardrails in the prior art require embedding steel plates or steel tendon bundles on the bridge, which is difficult to construct for re-burying structural components on the existing bridge deck, and the construction period is even longer. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the assembled anti-collision guardrails in the prior art cannot be quickly assembled on existing bridges, and thus provide an assembled bridge guardrail.

[0005] To solve the above technical problem, the present invention provides an assembled bridge guardrail, which is installed on the bridge deck and includes:

[0006] A plurality of connecting screws are arranged in parallel, and the connecting screws penetrate through the bridge deck.

[0007] A connecting column, which is of a hollow structure. The connecting column is installed on the bridge deck through the connecting screws. A positioning bolt is installed in the cavity of the connecting column. The positioning bolt is coaxially arranged with the connecting column and extends from the top of the connecting column to the outside of the connecting column.

[0008] A guardrail body, on which a connecting sleeve is installed. The connecting sleeve is sleeved on the connecting column, and the inner diameter of the connecting sleeve is larger than the outer diameter of the connecting column. The first concrete is poured between the connecting sleeve and the connecting column.

[0009] Optionally, an installation groove is provided on the guardrail body. The connecting sleeve extends vertically from the installation groove to the bottom of the guardrail body. The positioning bolt extends into the installation groove, and an anchoring plate is installed in the installation groove. The anchoring plate is threadedly connected with the positioning bolt.

[0010] Optionally, the anchoring plate completely covers one end of the connecting sleeve located in the installation groove.

[0011] Optionally, shear teeth are provided on the inner wall of the connecting sleeve and / or the outer wall of the connecting column.

[0012] Optionally, the connecting column is filled with second concrete.

[0013] Optionally, a grouting pipe is installed on the guardrail body. One end of the grouting pipe extends into the connecting sleeve, and the other end extends outside the guardrail body.

[0014] Optionally, a cover plate is installed on the installation groove. The cover plate and the installation groove enclose a closed installation cavity, and the anchor plate is arranged in the installation cavity.

[0015] Optionally, a connecting plate is installed at the bottom of the connecting column. The connecting screw penetrates through the connecting plate and is connected with a connecting nut in a matching manner.

[0016] Optionally, the connecting sleeve is made of metal and is embedded in the guardrail body.

[0017] Optionally, a positioning plate extends downward from one side of the guardrail body, and the positioning plate abuts against the edge of the bridge deck.

[0018] The technical solution of the present invention has the following advantages:

[0019] 1. The prefabricated bridge guardrail provided by the present invention is installed on the bridge deck and includes: a plurality of connecting screws arranged in parallel, the connecting screws penetrate through the bridge deck; a connecting column, which is a hollow structure, the connecting column is installed on the bridge deck through the connecting screws, a positioning bolt is installed in the cavity of the connecting column, the positioning bolt is coaxially arranged with the connecting column, and the positioning bolt extends from the top of the connecting column to the outside of the connecting column; a guardrail body, a connecting sleeve is installed on the guardrail body, the connecting sleeve is sleeved on the connecting column, and the inner diameter of the connecting sleeve is larger than the outer diameter of the connecting column, and first concrete is poured between the connecting sleeve and the connecting column.

[0020] When installing a bridge guardrail on an existing bridge, after removing the existing guardrail that does not meet the current specifications, first drill installation holes at the positions where the bridge guardrail is to be installed on the bridge deck of the bridge. The connecting screws are sequentially inserted into the installation holes, and the connecting nuts are used to cooperate with the connecting screws under the bridge to limit the connecting screws and prevent the connecting screws from being pulled out of the installation holes when subjected to external forces. The hollow connecting column is fixed to the bridge deck through the connecting screws, and concrete is poured into the connecting column while placing positioning bolts, and it is ensured that both the positioning bolts and the connecting column are kept vertical. Then hoist the guardrail body. After hoisting the guardrail body, lower the connecting sleeve so that it aligns with the positioning bolt. When the connecting sleeve approaches the connecting column, adjust the position of the connecting sleeve so that the connecting sleeve aligns with the connecting column, and the connecting sleeve is sleeved outside the connecting column. After the positioning installation of the connecting sleeve and the connecting column is completed, pour the first concrete between the connecting sleeve and the connecting column to make the connecting sleeve and the connecting column firmly connected. During the installation of the bridge guardrail, only need to drill holes on the existing bridge deck. At the same time, when hoisting the guardrail body, first align the connecting sleeve with the multi-position bolts, and then align the connecting sleeve with the connecting column after the connecting sleeve approaches the connecting column. And the inner diameter of the connecting sleeve is larger than the outer diameter of the connecting column, the hoisting accuracy requirements for the guardrail body are lower, the installation is more convenient, the construction is simple, and the construction period for installing the bridge guardrail on the existing bridge can be shortened.

[0021] 2. For the prefabricated bridge guardrail provided by the present invention, an installation groove is provided on the guardrail body, the connecting sleeve vertically extends from the installation groove to the bottom of the guardrail body, the positioning bolt extends into the installation groove, and an anchor plate is installed in the installation groove, and the anchor plate is threadedly connected with the positioning bolt. Through the cooperation connection between the anchor plate and the positioning bolt, the connection stability between the guardrail body and the connecting column is increased.

[0022] 3. For the prefabricated bridge guardrail provided by the present invention, a grouting pipe is installed on the guardrail body, one end of the grouting pipe extends into the connecting sleeve, and the other end extends outside the guardrail body. By providing the grouting pipe, during construction, the top of the connecting column and the connecting sleeve can be covered by the anchor plate first, and after the anchor plate is stably connected with the positioning bolt, the second concrete is poured between the connecting column and the connecting sleeve by using the grouting pipe, which can increase the compactness of the second concrete and the reliability of the connection between the connecting sleeve and the connecting column.

[0023] 4. For the prefabricated bridge guardrail provided by the present invention, a positioning plate extends downward on one side of the guardrail body, and the positioning plate abuts against the edge of the bridge deck. When hoisting the guardrail body, the positioning plate can be close to the edge of the bridge deck. When the positioning plate moves below the bridge deck, let the positioning plate descend along the edge of the bridge deck, and the connecting sleeve and the connecting column can be on the same straight line in the width direction of the bridge deck. At the same time, after the guardrail body is installed, when the guardrail body is subjected to external forces, the positioning column abuts against the edge of the bridge, which can restrain the position of the guardrail body and increase the stability of the guardrail body. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is the front view of the prefabricated bridge guardrail provided in the embodiments of the present invention.

[0026] Figure 2 It is the structural schematic diagram of the connection screw installed on the bridge provided in the embodiments of the present invention.

[0027] Figure 3 It is the structural schematic diagram of the connection column installed on the bridge deck provided in the embodiments of the present invention.

[0028] Figure 4 It is the structural schematic diagram of the guardrail body provided in the embodiments of the present invention.

[0029] Figure 5 It is the left view of the prefabricated bridge guardrail provided in the embodiments of the present invention.

[0030] Explanation of reference numerals: 1. Connection screw; 2. Connection column; 3. Guardrail body; 4. Positioning bolt; 5. Connection plate; 6. Connection nut; 7. Connection sleeve; 8. Shear teeth; 9. Installation groove; 10. Anchor plate; 11. Cover plate; 12. Grouting pipe; 13. First concrete; 14. Positioning plate; 15. Second concrete; 16. Bridge deck. Specific embodiments

[0031] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. 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 therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected 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.

[0034] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] Figures 1 to 5 A prefabricated bridge guardrail provided for this embodiment is installed on the bridge deck 16 and includes: connecting screws 1, connecting columns 2, and a guardrail body 3. As Figure 1 shown, a plurality of guardrail bodies 3 are sequentially installed along the length direction of the bridge deck 16 to assemble into an integral bridge guardrail.

[0036] As Figure 2 and Figure 3 shown, a plurality of connecting screws 1 are vertically arranged, and all the connecting screws 1 penetrate through the bridge deck 16. The connecting column 2 is of a hollow structure. The connecting column 2 is installed on the bridge deck 16 through the connecting screw 1. A positioning bolt 4 is installed in the cavity of the connecting column 2. The positioning bolt 4 is coaxially arranged with the connecting column 2, and the positioning bolt 4 extends from the top of the connecting column 2 to the outside of the connecting column 2. The second concrete 15 is poured in the connecting column 2, and the lower part of the positioning bolt 4 is buried in the second concrete 15. In order to increase the connection stability between the connecting screw 1 and the connecting column 2, connecting plates 5 are installed at the bottom of the connecting column 2 and the top of the connecting screw 1. The connecting plate 5 installed at the bottom of the connecting column 2 and the connecting column 2 are of an integrally formed structure. The connecting screw 1 penetrates through the connecting plate 5 and is cooperatively connected with a connecting nut 6 to fix the two connecting plates 5.

[0037] As Figure 4 and Figure 5As shown, a connecting sleeve 7 is installed on the guardrail body 3. The connecting sleeve 7 is sleeved on the connecting column 2, and the inner diameter of the connecting sleeve 7 is larger than the outer diameter of the connecting column 2. Shearing teeth 8 are provided on the inner wall of the connecting sleeve 7 and the outer wall of the connecting column 2. The first concrete 13 is poured between the connecting sleeve 7 and the connecting column 2. The connecting sleeve 7 is made of metal, specifically a steel sleeve. When the guardrail body 3 is prefabricated and formed, the connecting sleeve 7 is placed in the mold so that the connecting sleeve 7 is directly embedded in the guardrail body 3. The connecting column 2 is a hollow column made of steel. An installation groove 9 is provided on the guardrail body 3. The connecting sleeve 7 extends vertically from the installation groove 9 to the bottom of the guardrail body 3. The positioning bolt 4 extends into the installation groove 9. An anchor plate 10 is installed in the installation groove 9. The anchor plate 10 is threadedly connected with the positioning bolt 4. The anchor plate 10 completely covers one end of the connecting sleeve 7 arranged in the installation groove 9. A cover plate 11 is installed on the installation groove 9. The cover plate 11 and the installation groove 9 enclose a closed installation cavity, and the anchor plate 10 is arranged in the installation cavity to increase the overall beauty of the bridge guardrail. In order to facilitate pouring the first concrete 13 between the connecting column 2 and the connecting sleeve 7, a grouting pipe 12 is installed on the guardrail body 3. One end of the grouting pipe 12 extends into the connecting sleeve, and the other end extends outside the guardrail body 3. In order to facilitate confirming the orientation and installation position of the guardrail body 3, two connecting sleeves 7 are provided on one guardrail body 3. A positioning plate 14 extends downward on one side of the guardrail body 3, and the positioning plate 14 abuts against the edge of the bridge deck 16.

[0038] When installing the prefabricated bridge guardrail provided in this embodiment on an existing bridge, after removing the existing guardrail that does not meet the current specifications, first drill installation holes at the positions where the bridge guardrail is to be installed on the bridge deck 16 of the bridge. The connecting screw 1 is sequentially inserted into the installation holes, and the connecting nut 6 and the connecting plate 5 are used under the bridge to cooperate with the connecting screw 1 to limit the connecting screw 1 and prevent the connecting screw 1 from being pulled out of the installation hole when subjected to external forces. After docking the connecting plate 5 on the hollow connecting column 2 with the connecting screw 1, the connecting column 2 is fixed to the bridge deck 16 by using the connecting nut 6 to cooperate with the connecting screw 1 through the connecting nut 6, the connecting screw 1 and the connecting plate 5. The second concrete 15 is poured into the connecting column 2 while placing the positioning bolt 4, and it is ensured that both the positioning bolt 4 and the connecting column 2 are kept vertical, so that the positioning bolt 4 is vertically embedded in the second concrete 15. Then the guardrail body 3 is hoisted. After the guardrail body 3 is hoisted, the connecting sleeve 7 is lowered so as to align with the positioning bolt 4. When the connecting sleeve 7 approaches the connecting column 2, the position of the connecting sleeve 7 is adjusted to make the connecting sleeve 7 align with the connecting column 2, so that the connecting sleeve 7 is sleeved outside the connecting column 2. After the positioning installation of the connecting sleeve 7 and the connecting column 2 is completed, the anchoring plate 10 is fixed on the connecting bolt by bolts, and the first concrete 13 is poured between the connecting sleeve 7 and the connecting column 2 through the grouting pipe 12 to make the connecting sleeve 7 and the connecting column 2 stably connected. During the installation of the bridge guardrail, only holes need to be drilled on the existing bridge deck 16. At the same time, when hoisting the guardrail body 3, the positioning plate 14 is first used to position with the edge of the bridge deck 16 to align the connecting sleeve 7 with the multi-position bolt. After the connecting sleeve 7 approaches the connecting column 2, then the connecting sleeve 7 is aligned with the connecting column 2. Moreover, the inner diameter of the connecting sleeve 7 is larger than the outer diameter of the connecting column 2, so the hoisting accuracy requirement for the guardrail body 3 is lower, the installation is more convenient, the construction is simple, and the construction period for installing the bridge guardrail on the existing bridge can be shortened.

[0039] As an alternative implementation manner, both the connecting sleeve 7 and the guardrail body 3 are of concrete structures, and the connecting sleeve 7 and the guardrail body 3 are integrally formed members. The connecting column 2 is a precast concrete member.

[0040] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. An assembled bridge guardrail, characterized in that, Installed on an existing bridge deck, including: Connecting screws (1), multiple of which are arranged in parallel, and the connecting screws (1) penetrate through the bridge deck; Connecting columns (2), which are of hollow structure. The connecting columns (2) are installed on the bridge deck through the connecting screws (1). A positioning bolt (4) is installed in the cavity of the connecting column (2). The positioning bolt (4) is coaxially arranged with the connecting column (2), and the positioning bolt (4) extends from the top of the connecting column (2) to the outside of the connecting column (2); Guardrail body (3), on which a connecting sleeve (7) is installed. The connecting sleeve (7) is a steel sleeve. The connecting sleeve (7) is sleeved on the connecting column (2), and the inner diameter of the connecting sleeve (7) is larger than the outer diameter of the connecting column (2). The first concrete (13) is poured between the connecting sleeve (7) and the connecting column (2). An installation groove (9) is provided on the guardrail body (3). The connecting sleeve (7) extends vertically from the installation groove (9) to the bottom of the guardrail body (3). The positioning bolt (4) extends into the installation groove (9). An anchor plate (10) is installed in the installation groove (9), and the anchor plate (10) is threadedly connected with the positioning bolt (4); When installing a bridge guardrail on an existing bridge, after removing the existing guardrail that does not meet the current specifications, first drill installation holes at the positions where the bridge guardrail is to be installed on the bridge deck (16) of the bridge. The connecting screws (1) are sequentially inserted into the installation holes, and a connecting nut (6) is used to cooperate with the connecting screws (1) below the bridge to limit the connecting screws (1); the hollow connecting columns (2) are fixed to the bridge deck (16) through the connecting screws (1). Concrete is poured into the connecting columns (2) while placing the positioning bolts (4), and it is ensured that both the positioning bolts (4) and the connecting columns (2) are kept vertical; then the guardrail body (3) is hoisted. After the guardrail body (3) is hoisted, the connecting sleeve (7) is lowered so as to align with the positioning bolt (4). When the connecting sleeve (7) is close to the connecting column (2), the position of the connecting sleeve (7) is adjusted to make the connecting sleeve (7) align with the connecting column (2), so that the connecting sleeve (7) is sleeved outside the connecting column (2). After the positioning installation of the connecting sleeve (7) and the connecting column (2) is completed, the first concrete (13) is poured between the connecting sleeve (7) and the connecting column (2) to make the connecting sleeve (7) and the connecting column (2) firmly connected.

2. The prefabricated bridge guardrail according to claim 1, wherein The anchor plate (10) completely covers one end of the connecting sleeve (7) located in the installation groove (9).

3. The prefabricated bridge guardrail according to claim 1 or 2, characterized in that, Shearing teeth (8) are provided on the inner wall of the connecting sleeve (7) and / or the outer wall of the connecting column (2).

4. The prefabricated bridge guardrail according to claim 1 or 2, characterized in that, The second concrete (15) is poured into the connecting column (2).

5. The prefabricated bridge guardrail according to claim 3, characterized in that, The second concrete (15) is poured into the connecting column (2).

6. The prefabricated bridge guardrail according to claim 4, characterized in that, A grouting pipe (12) is installed on the guardrail body (3). One end of the grouting pipe (12) extends into the connecting sleeve, and the other end extends outside the guardrail body (3).

7. The prefabricated bridge guardrail according to claim 1 or 2, characterized in that A cover plate (11) is installed on the installation groove (9), and the cover plate (11) and the installation groove (9) enclose a closed installation cavity, and the anchoring plate (10) is arranged in the installation cavity.

8. The prefabricated bridge guardrail according to claim 1 or 2, characterized in that A connecting plate (5) is installed at the bottom of the connecting column (2), and the connecting screw rod (1) passes through the connecting plate (5) and is cooperatively connected with a connecting nut (6).

9. The prefabricated bridge guardrail according to claim 1 or 2, characterized in that, The connecting sleeve (7) is made of metal, and the connecting sleeve (7) is embedded in the guardrail body (3).

10. The prefabricated bridge guardrail according to claim 1 or 2, characterized in that, A positioning plate (14) extends downward on one side of the guardrail body (3), and the positioning plate (14) abuts against the edge of the bridge deck.

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