Bridge guardrail anchoring structure and anchoring construction method

Abstract

The invention relates to a bridge guardrail anchoring structure and an anchoring construction method, and belongs to the technical field of road bridge engineering, the bridge guardrail anchoring structure comprises a top plate, a side plate, a plurality of top bolts and a plurality of side bolts, and the top plate and the side plate are integrally formed; the bottom surface of the top plate is arranged on the top surface of the curb, and a plurality of top anchor holes are formed in the top plate; the side plate makes contact with the curb side, and a plurality of side anchor holes are formed in the side plate. The bottom ends of the guardrail columns are fixed to the top end of the top plate. The plurality of top bolts respectively penetrate through the plurality of top anchor holes; and the plurality of side bolts respectively penetrate through the plurality of side anchor holes. A top plate and a side plate which are integrally formed and vertically distributed are arranged at the top end and one side of the curb correspondingly, then a plurality of top bolts penetrate through a plurality of top anchor holes correspondingly to be in threaded connection with the interiors of corresponding top screw grooves, and a plurality of side bolts penetrate through a plurality of side anchor holes correspondingly to be in threaded connection with the corresponding side screw grooves; the guardrail can be firmly fixed on the curb on the premise that the size of the bridge deck structure is not enlarged and the original curb structure is not changed, and the stability and the reliability of guardrail fixing are improved.

Description

Technical Field

[0001] This invention relates to the field of road and bridge engineering technology, and in particular to a bridge railing anchorage structure and anchorage construction method. Background Technology

[0002] As people place higher demands on the protection level of bridge median guardrails, corrugated beam guardrails, due to their advantages of strong energy absorption, light weight and simple construction, have widely replaced concrete guardrails and become the mainstream solution for bridge guardrail renovation. However, during the upgrade and renovation of existing bridge railings, the following technical problems were found in the existing anchoring structures: ① When the lateral width of the central curb is insufficient, the traditional guardrail flange base structure cannot be effectively arranged. For some bridges that have been in operation for a long time, the lateral width of the central curb is relatively narrow. Using the traditional guardrail base requires four chemical anchors to be installed on the curb. The anchor holes facing away from the traffic direction are often difficult to install due to insufficient space or cannot obtain reliable anchoring force, which leads to the stability requirements of the column; ② When the thickness of the central curb is insufficient, the traditional chemical anchor arrangement scheme has the risk of damaging the bridge deck structure. The concrete thickness of the central curb of some existing bridges is limited and cannot meet the standard anchoring depth requirements. If construction is forced, the curb may be drilled through or the flange plate may be damaged, affecting structural safety. If the anchor length is reduced, sufficient anchoring force cannot be provided, especially when encountering impact loads or pull-out forces, which can easily lead to instability.

[0003] Therefore, how to design a bridge railing anchorage structure that is adapted to the limited size of the central curb stone and takes into account high stability and reliability, and its construction method, are problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0004] This invention provides a bridge railing anchoring structure and anchoring construction method, solving the technical problem that insufficient curb stone size in existing bridges affects the stability of bridge railings.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a bridge railing anchoring structure for fixing railing posts to the curb of a bridge; comprising: a top plate, a side plate, a plurality of top bolts and a plurality of side bolts, wherein the top plate and the side plate are integrally formed and arranged vertically, and the side plate is located below the top plate; the top of the curb is provided with a plurality of top bolt grooves and one side of the curb is provided with a plurality of side bolt grooves; the bottom surface of the top plate is placed on the top surface of the curb and is provided with a plurality of top anchor holes respectively arranged opposite to the plurality of top bolt grooves; one side of the side plate contacts one side of the curb and is provided with a plurality of side anchor holes respectively arranged opposite to the plurality of side bolt grooves; the bottom end of the railing post is fixed to the top of the top plate; the plurality of top bolts are threaded through the plurality of top anchor holes and connected to the corresponding top bolt grooves; the plurality of side bolts are threaded through the plurality of side anchor holes and connected to the corresponding side bolt grooves.

[0006] The beneficial effects of this invention are:

[0007] 1. A completely redesigned bridge railing anchoring structure is employed. First, a single-piece, vertically distributed top plate and side plates are placed on the top and one side of the curb, respectively. Then, multiple top bolts are threaded through multiple top anchor holes into corresponding top bolt grooves, and multiple side bolts are threaded through multiple side anchor holes into corresponding side bolt grooves. This vertically distributed combination of top and side bolts allows for secure fixing of the railing to the curb without increasing the bridge deck dimensions or altering the original curb structure. This solves the problem of unstable railing fixation when the curb width is narrow or the thickness is insufficient, improving the stability and reliability of the railing fixation. 2. Since multiple top bolts and multiple side bolts are arranged perpendicularly and simultaneously fix the guardrail to the curb, the depth of multiple top bolt grooves and multiple side bolt grooves can be reduced, avoiding damage to the curb due to excessive drilling.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, it also includes multiple top ribs, which are spaced apart and arranged around the outside of the guardrail post, with their adjacent sides respectively fixed to the outside of the guardrail post and the top surface of the top plate.

[0010] The further beneficial effect of adopting the above is that by using multiple top ribs to fix the adjacent sides of the guardrail post and the top of the top plate respectively, the firmness and shear resistance of the fixation between the guardrail post and the top plate can be enhanced.

[0011] Furthermore, it also includes multiple side ribs, which are spaced apart and whose adjacent sides are respectively fixed to the bottom surface of the top plate and the other side of the side plate.

[0012] The further beneficial effect of adopting the above is that by using multiple side ribs to fix the bottom of the top plate and the other side of the side plate respectively, the firmness and shear resistance of the fixation between the top plate and the side plate can be enhanced.

[0013] Furthermore, it also includes multiple top adhesive layers, which are respectively filled in the gaps between the multiple top bolts and the multiple top screw grooves.

[0014] The further beneficial effect of the above is that by using multiple top adhesive layers to fill the gaps between multiple top bolts and multiple top bolt grooves, the firmness and stability of the fixation between the top plate and the curb can be improved.

[0015] Furthermore, it also includes multiple side adhesive layers, which are respectively filled in the gaps between the multiple side bolts and the multiple side thread grooves.

[0016] The further beneficial effect of the above is that by using multiple side adhesive layers to fill the gaps between multiple side bolts and multiple side screw grooves, the firmness and stability of the fixation between the side plate and the curb can be improved.

[0017] Furthermore, all of the aforementioned top bolts are chemical bolts.

[0018] Furthermore, all of the aforementioned side bolts are expansion bolts.

[0019] In addition, a bridge railing anchoring construction method is provided, characterized by including the aforementioned bridge railing anchoring structure, and the specific steps are as follows: S1. First, clean the top and sides of the curbstone, and then drill multiple top screw grooves and multiple side screw grooves on the top and one side of the curbstone respectively. S2. First, make the top plate and side plate contact the top and one side of the curb stone respectively, and then align the multiple top anchor holes with the multiple top screw grooves and the multiple side anchor holes with the multiple side screw grooves. S3. First, pass multiple top bolts through multiple top anchor holes and thread them into multiple top bolt grooves. Then, pass multiple side bolts through multiple side anchor holes and thread them into multiple side bolt grooves. S4. First, fill multiple portions of top adhesive layer between multiple top bolts and multiple top bolt grooves respectively, and then fill multiple portions of side adhesive layer between multiple side bolts and multiple side bolt grooves respectively. S5. The bottom end of the guardrail post is welded or bolted to the top surface of the top plate. Attached Figure Description

[0020] Figure 1 This is a three-dimensional perspective structural diagram of a bridge railing anchorage structure according to the present invention; Figure 2 This is a front view schematic diagram of a bridge railing anchorage structure according to the present invention; Figure 3 This is a top view schematic diagram of a bridge railing anchorage structure according to the present invention; Figure 4 This is a side view schematic diagram of a bridge railing anchorage structure according to the present invention.

[0021] The attached diagram lists the components represented by each number as follows: 1. Top plate, 11. Top anchor hole, 2. Side plate, 21. Side anchor hole, 3. Top bolt, 4. Side bolt, 5. Curb stone, 6. Guardrail post, 7. Top rib plate, 8. Side rib plate. Detailed Implementation

[0022] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0023] like Figure 2 As shown, a bridge railing anchoring structure is used to fix railing posts 6 to the curb stones 5 of a bridge; it includes: a top plate 1, a side plate 2, multiple top bolts 3 and multiple side bolts 4. The top plate 1 and the side plate 2 are integrally formed and arranged vertically, with the side plate 2 located below the top plate 1; the top of the curb stone 5 is provided with multiple top bolt grooves and one side of the curb stone 5 is provided with multiple side bolt grooves; the bottom surface of the top plate 1 is placed on the top surface of the curb stone 5 and is provided with multiple top anchor holes 11 arranged opposite to the multiple top bolt grooves; one side of the side plate 2 contacts one side of the curb stone 5 and is provided with multiple side anchor holes 21 arranged opposite to the multiple side bolt grooves; the bottom end of the railing post 6 is fixed to the top surface of the top plate 1; the multiple top bolts 3 pass through the multiple top anchor holes 11 and are threaded into the corresponding top bolt grooves; the multiple side bolts 4 pass through the multiple side anchor holes 21 and are threaded into the corresponding side bolt grooves.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, in some specific embodiments, it may also include multiple top ribs 7, which are spaced apart and arranged around the outside of the guardrail post 6, with their adjacent sides respectively fixed to the outside of the guardrail post 6 and the top surface of the top plate 1.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, in some specific embodiments, multiple side ribs 8 are also included. The multiple side ribs 8 are spaced apart and their adjacent sides are respectively fixed to the bottom surface of the top plate 1 and the other side of the side plate 2.

[0026] Specifically, it also includes multiple top adhesive layers, which are respectively filled in the gaps between multiple top bolts 3 and multiple top bolt grooves.

[0027] Specifically, it also includes multiple side adhesive layers, which are respectively filled in the gaps between multiple side bolts 4 and multiple side thread grooves.

[0028] Specifically, chemical bolts can be selected for all of the top bolts 3.

[0029] Specifically, all of the side bolts 4 are expansion bolts.

[0030] In addition, a bridge railing anchorage construction method is provided, including the bridge railing anchorage structure according to any one of claims 1-7, the specific steps of which are as follows: S1. First clean the top and side surfaces of the curbstone 5, and then drill multiple top screw grooves and multiple side screw grooves on the top and side of the curbstone 5 respectively. S2. First, make the top plate 1 and the side plate 2 contact the top and one side of the curbstone 5 respectively, and then align the multiple top anchor holes 11 with the multiple top screw grooves and the multiple side anchor holes 21 with the multiple side screw grooves. S3. First, thread multiple top bolts 3 through multiple top anchor holes 11 and connect them to the corresponding top bolt grooves. Then, thread multiple side bolts 4 through multiple side anchor holes 21 and connect them to the corresponding side bolt grooves. S4. First, fill multiple portions of top adhesive layer between multiple top bolts 3 and multiple top bolt grooves respectively, and then fill multiple portions of side adhesive layer between multiple side bolts 4 and multiple side bolt grooves respectively. S5, the bottom end of the guardrail post 6 is fixed to the top surface of the top plate 1.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bridge railing anchoring structure for fixing railing posts (6) to the curb stones (5) of a bridge; characterized in that, include: The top plate (1) and side plate (2) are integrally formed. The top plate (1) and the side plate (2) are arranged perpendicularly and the side plate (2) is located below the top plate (1). The top of the curbstone (5) is provided with multiple top screw grooves and the side of the curbstone (5) is provided with multiple side screw grooves. The bottom surface of the top plate (1) is placed on the top surface of the curbstone (5) and it is provided with multiple top anchor holes (11) arranged opposite to the multiple top screw grooves. The side plate (2) is in contact with the side of the curbstone (5) and it is provided with multiple side anchor holes (21) arranged opposite to the multiple side screw grooves. The bottom end of the guardrail post (6) is fixed to the top surface of the top plate (1). Multiple top bolts (3) and multiple side bolts (4), the multiple top bolts (3) respectively pass through multiple top anchor holes (11) and are threaded into the corresponding top bolt grooves; the multiple side bolts (4) respectively pass through multiple side anchor holes (21) and are threaded into the corresponding side bolt grooves.

2. The bridge railing anchoring structure according to claim 1, characterized in that, It also includes multiple top ribs (7), which are spaced apart and arranged around the outside of the guardrail post (6), and their adjacent sides are respectively fixed to the outside of the guardrail post (6) and the top surface of the top plate (1).

3. The bridge railing anchoring structure according to claim 1, characterized in that, It also includes multiple side ribs (8), which are spaced apart and their adjacent sides are fixed to the bottom surface of the top plate (1) and the other side of the side plate (2), respectively.

4. The bridge railing anchoring structure according to claim 1, characterized in that, It also includes multiple top adhesive layers, which are respectively filled in the gaps between the multiple top bolts (3) and the multiple top screw grooves.

5. A bridge railing anchoring structure according to claim 1, characterized in that, It also includes multiple side adhesive layers, which are respectively filled in the gaps between the multiple side bolts (4) and the multiple side thread grooves.

6. The bridge railing anchoring structure according to claim 1, characterized in that, All of the top bolts (3) mentioned above are chemical bolts.

7. The bridge railing anchoring structure according to claim 1, characterized in that, All of the side bolts (4) mentioned above are expansion bolts.

8. A method for anchoring bridge railings, characterized in that, Including the bridge railing anchoring structure as described in any one of claims 1-7, the specific steps are as follows: S1. First clean the top and side surfaces of the curbstone (5), and then drill multiple top screw grooves and multiple side screw grooves on the top and side surfaces of the curbstone (5). S2. First, make the top plate (1) and side plate (2) contact the top and side of the curbstone (5) respectively, and then align the multiple top anchor holes (11) with the multiple top screw grooves and the multiple side anchor holes (21) with the multiple side screw grooves. S3. First, thread multiple top bolts (3) through multiple top anchor holes (11) and connect them to the corresponding top bolt grooves. Then, thread multiple side bolts (4) through multiple side anchor holes (21) and connect them to the corresponding side bolt grooves. S4. The bottom end of the guardrail post (6) is fixed to the top surface of the top plate (1).

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