Monitoring facility foundation arranged on concrete anti-collision guardrail on bridge cantilever side

Abstract

The utility model discloses a monitoring facility foundation arranged on a concrete anti-collision guardrail on the side of a bridge cantilever. A monitoring stand column rod and the anti-collision guardrail are fixed through a connecting piece. The connecting piece comprises an inner side steel plate tightly attached to the inner side of the anti-collision guardrail, an outer side steel plate tightly attached to the outer side of the anti-collision guardrail and a top face steel plate tightly attached to the top face of the anti-collision guardrail. Through-wall bolts penetrating through the corresponding positions of the anti-collision guardrail are arranged at the positions, close to the lower ends, of the inner side steel plate and the outer side steel plate. The lower end of the monitoring stand column rod is provided with a base flange plate and is fixed through a bolt between the base flange plate and the top surface steel plate. The positions, corresponding to the base flange plate, of the anti-collision guardrail are provided with embedded steel bar anchor bolts and embedded bolts which upwards penetrate through bolt mounting holes of the base flange plate, so that the base flange plate, the top face steel plate and the top face of the anti-collision guardrail are tightly attached and fixed. From the perspective of reducing construction investment cost and construction difficulty and improving structural reliability, the problem that a monitoring facility is additionally arranged on an existing concrete guardrail is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring facility construction, in particular to a monitoring facility foundation arranged on a concrete anti-collision guardrail at a cantilever side of a bridge. Background Art

[0002] With the development of cities, traffic volume continues to grow, intelligent transportation technology is constantly improving, and the safety standards of transportation facilities are also constantly improving. The monitoring facilities installed earlier may not be able to meet current traffic needs.

[0003] Based on the above factors, it is often necessary to upgrade and transform the traffic monitoring facilities of existing roads and bridges to improve the efficiency and intelligence level of traffic management and reduce the accident rate.

[0004] Therefore, it is necessary to install traffic monitoring facilities on existing roads and bridges. Unlike new construction, the anti-collision guardrail can be made into a basic backpack form, and anchor bolts are embedded in the backpack to form the foundation of the monitoring facility.

[0005] However, in practice, it is much more difficult to install monitoring facilities on existing concrete crash barriers, as follows:

[0006] 1. According to the "Design Rules for Highway Traffic Safety Facilities" (JTG / T D81-2017), the top width of the bridge concrete guardrail is generally 20 cm, while the flange size of the bottom of the conventional monitoring column can reach 50 cm. The top of the concrete guardrail does not meet the space requirements for the monitoring foundation installation.

[0007] 2. If all the anchor bolts are installed in the concrete guardrail by planting reinforcement according to conventional practice, the spacing between the planting reinforcements will be too dense, and the distance between the planting reinforcements and the edge of the concrete will not meet the structural requirements of the specifications, making construction difficult.

[0008] Therefore, how to install monitoring facilities on the concrete anti-collision guardrails beside existing bridges has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0009] In view of the above-mentioned defects of the prior art, the utility model provides a monitoring facility foundation arranged on the concrete anti-collision guardrail on the cantilever side of the bridge. The purpose is to install a monitoring facility foundation on the concrete anti-collision guardrail on the cantilever side of the existing bridge, and to solve the difficulties in installing monitoring facilities on the existing concrete guardrail from the perspective of reducing construction investment costs, reducing construction difficulty, and improving structural reliability.

[0010] To achieve the above-mentioned purpose, the utility model discloses a monitoring facility foundation provided on a concrete anti-collision guardrail at the cantilever side of a bridge, comprising an anti-collision guardrail and a monitoring column rod provided on the upper end of the anti-collision guardrail.

[0011] Wherein, the lower end of the monitoring column and the upper end of the anti-collision guardrail are fixed by a connecting piece;

[0012] The connecting member includes an inner steel plate arranged closely on the inner side of the anti-collision guardrail, an outer steel plate arranged closely on the outer side of the anti-collision guardrail, and a top steel plate arranged closely on the top surface of the anti-collision guardrail;

[0013] The top steel plate extends from an edge corresponding to the outer side of the crash barrier to the outer side of the outer steel plate facing away from the crash barrier, and forms an inner concave structure with the inner steel plate and the outer steel plate that matches the upper end of the crash barrier;

[0014] The inner steel plate and the outer steel plate are provided with through-wall bolts passing through corresponding positions of the anti-collision guardrail near the lower end, and the inner steel plate and the outer steel plate are clamped to the anti-collision guardrail by nuts provided on the through-wall bolts;

[0015] The lower end of the monitoring column is provided with a base flange, which is fixed to the anti-collision guardrail by bolts between the base flange and the top steel plate;

[0016] The anti-collision guardrail is provided with planted anchor bolts and embedded bolts that pass upward through the bolt mounting holes of the base flange at the position corresponding to the base flange. The base flange, the top steel plate and the top surface of the anti-collision guardrail are tightly fixed by nuts arranged on the planted anchor bolts and the embedded bolts.

[0017] Preferably, the anti-collision guardrail is arranged at the suspended edge of the bridge cantilever.

[0018] Preferably, the contact surface between the inner steel plate and the anti-collision guardrail, as well as the contact surface between the outer steel plate and the anti-collision guardrail, are both coated with Class A glue with a gap of 1mm±10%.

[0019] Preferably, a plurality of connecting stiffening ribs are provided between the portion of the top steel plate extending toward the side of the outer steel plate facing away from the crash barrier and the outer steel plate;

[0020] A plurality of column flange stiffening ribs are provided between the monitoring column and the base flange.

[0021] More preferably, four connecting member stiffening ribs are provided between the top steel plate and the outer steel plate.

[0022] Preferably, the inner steel plate and the outer steel plate are provided with three or more through-wall bolts near the lower end along the length direction of the anti-collision guardrail.

[0023] Preferably, a leveling gasket is provided between the bolt head of the through-wall bolt, the nut and the corresponding inner steel plate, or the corresponding outer steel plate.

[0024] Preferably, the structure formed by the top steel plate and the inner steel plate is formed by bending a single steel plate.

[0025] Beneficial effects of the utility model:

[0026] The utility model can set the foundation of monitoring facilities on the concrete anti-collision guardrail on the cantilever side of an existing bridge, and can also solve the difficulties in installing monitoring facilities on the existing concrete guardrail from the perspective of reducing construction investment costs, reducing construction difficulty, and improving structural reliability.

[0027] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A structural diagram of an embodiment of the present utility model is shown.

[0029] Figure 2 Show the utility model Figure 1 Schematic diagram of the AA section structure.

[0030] Figure 3 Show the utility model Figure 1 Schematic diagram of the cross-sectional structure along the middle BB direction.

[0031] Figure 4 A schematic structural diagram of the stiffening ribs of a connector in one embodiment of the present invention is shown.

[0032] Figure 5 A schematic structural diagram of the connecting member in the thickness direction of the stiffening ribs in one embodiment of the present invention is shown.

[0033] Figure 6 A schematic structural diagram of a column flange stiffening rib in one embodiment of the present invention is shown.

[0034] Figure 7 A schematic structural diagram of the column flange stiffening rib thickness direction in one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0035] Example

[0036] like Figures 1 to 3 As shown, the monitoring facility foundation of the concrete anti-collision guardrail located at the cantilever side of the bridge includes an anti-collision guardrail 12 and a monitoring column rod 11 arranged at the upper end of the anti-collision guardrail 12.

[0037] Among them, the lower end of the monitoring column rod 11 and the upper end of the anti-collision guardrail 12 are fixed by a connecting piece;

[0038] The connecting member includes an inner steel plate 2 closely arranged on the inner side of the anti-collision guardrail 12, an outer steel plate 3 closely arranged on the outer side of the anti-collision guardrail 12, and a top steel plate 1 closely arranged on the top surface of the anti-collision guardrail 12;

[0039] The top steel plate 1 extends from the edge of the outer side of the crash barrier 12 to the outer side of the outer steel plate 3 facing away from the crash barrier 12, and forms a concave structure with the inner steel plate 2 and the outer steel plate 3 that matches the upper end of the crash barrier 12;

[0040] The inner steel plate 2 and the outer steel plate 3 are provided with through-wall bolts 5 near the lower end thereof, which penetrate the corresponding position of the anti-collision guardrail 12. The inner steel plate 2 and the outer steel plate 3 are clamped to the anti-collision guardrail 12 by nuts provided on the through-wall bolts 5.

[0041] The lower end of the monitoring column 11 is provided with a base flange 9, which is fixed to the anti-collision guardrail 12 by bolts between the base flange 9 and the top steel plate 1;

[0042] The anti-collision guardrail 12 is provided with rebar anchor bolts 7 and embedded bolts 6 that pass upward through the bolt mounting holes of the base flange 9 at the position corresponding to the base flange 9. The base flange 9, the top steel plate 1 and the top surface of the anti-collision guardrail 12 are tightly fixed by nuts set on the rebar anchor bolts 7 and the embedded bolts 6.

[0043] The utility model includes a top steel plate 1, an inner steel plate 2 and an outer steel plate 3. The connecting piece with a "π"-shaped cross section expands the space at the top of the anti-collision guardrail 12 and provides an installation position for the monitoring column rod 11.

[0044] By drilling holes in the top of the anti-collision guardrail 12 and placing embedded bolts 6 and rebar anchor bolts 7, it is ensured that the contact surface between the base flange 9, the top steel plate 1 and the top surface of the anti-collision guardrail 12 is flat and well stressed.

[0045] The utility model transmits the load of the monitoring column rod 11 to the anti-collision guardrail 12 through the combined force of the through-wall bolt 5 and the planted anchor bolt 7, ensuring that the foundation structure is stressed as a whole and safe and reliable.

[0046] In some embodiments, the crash barrier 12 is disposed at a free-hanging edge of the bridge cantilever 13 .

[0047] In some embodiments, the contact surface between the inner steel plate 2 and the anti-collision guardrail 12, as well as the contact surface between the outer steel plate 3 and the anti-collision guardrail 12, are both coated with Class A glue with a gap of 1 mm ± 10%.

[0048] like Figures 4 to 7As shown, in some embodiments, a plurality of connecting stiffening ribs 4 are provided between the portion of the top steel plate 1 extending toward the side of the outer steel plate 3 facing away from the crash barrier 12 and the outer steel plate 3;

[0049] A plurality of column flange stiffening ribs 8 are provided between the monitoring column 11 and the base flange 9 .

[0050] In some embodiments, four connecting stiffening ribs 4 are provided between the top steel plate 1 and the outer steel plate 3 .

[0051] In some embodiments, three or more through-wall bolts 5 are provided near the lower ends of the inner steel plate 2 and the outer steel plate 3 along the length direction of the anti-collision guardrail 12.

[0052] In actual application, three through-wall bolts 5 are drilled on the anti-collision guardrail 12 to fasten the inner steel plate 2 and the outer steel plate 3, which is easy to operate.

[0053] In some embodiments, a leveling washer 10 is provided between the bolt head and nut of the through-wall bolt 5 and the corresponding inner steel plate 2 or the corresponding outer steel plate 3 .

[0054] In some embodiments, the structure formed by the top steel plate and the inner steel plate 2 is formed by bending a single steel plate.

[0055] The utility model also provides a construction method for a monitoring facility foundation provided on a concrete anti-collision guardrail at the cantilever side of a bridge, comprising the following steps:

[0056] Step 1: Clean and repair the concrete interface between the crash barrier 12 and the inner steel plate 2, the outer steel plate 3, and the top steel plate 1. Leave a gap of 1mm±10% on the contact surface between the inner steel plate 2 and the crash barrier 12, and on the contact surface between the outer steel plate 3 and the crash barrier 12, and apply Class A glue.

[0057] Step 2: Mark out all the bolt hole positions for inserting the through-wall bolts 5 on the anti-collision guardrail 12 and drill the holes using an electric drill;

[0058] Step 3: Drill holes at the locations where the anchor bolts 7 and embedded bolts 6 are to be set on the anti-collision guardrail 12, and install the anchor bolts 7 and embedded bolts 6;

[0059] Step 4: Install the top steel plate 1;

[0060] Step 5: Install the inner steel plate 2 and the outer steel plate 3;

[0061] Step 6: Install the through-wall bolts 5 and corresponding leveling washers 10, then tighten the nuts on the through-wall bolts 5 and cut off the portion of the screw outside the corresponding nut;

[0062] Step 7: Install a connector stiffening rib 4 between the top steel plate 1 and the outer steel plate 3;

[0063] Step 8: Install the base flange 9 and the monitoring column 11 on the top steel plate 1 in sequence, and set the column flange stiffening rib 8 between the base flange 9 and the monitoring column 11;

[0064] Step 9: Fix the base flange 9 and the top steel plate 1 by tightening all nuts on the bolts.

[0065] In some embodiments, before drilling in steps 2 and 3, the steel bar structure diagram and pipeline pre-buried diagram of the anti-collision guardrail 12 are retrieved, and the positions of the embedded anchor bolts 7, embedded bolts 6 and bolt holes for inserting through-wall bolts 5 are reviewed to ensure that there is no conflict with the existing steel bars and pre-buried pipelines of the anti-collision guardrail 12.

[0066] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A monitoring facility foundation for a concrete anti-collision guardrail at the cantilever side of a bridge, comprising an anti-collision guardrail (12) and a monitoring column (11) arranged at the upper end of the anti-collision guardrail (12); characterized in that: The lower end of the monitoring column (11) and the upper end of the anti-collision guardrail (12) are fixed via a connecting piece; The connecting member comprises an inner steel plate (2) arranged closely on the inner side of the anti-collision guardrail (12), an outer steel plate (3) arranged closely on the outer side of the anti-collision guardrail (12), and a top steel plate (1) arranged closely on the top surface of the anti-collision guardrail (12); The top steel plate (1) extends from an edge corresponding to the outer side of the anti-collision guardrail (12) to the outer side of the outer steel plate (3) facing away from the anti-collision guardrail (12), and forms an inner concave structure matching the upper end portion of the anti-collision guardrail (12) with the inner steel plate (2) and the outer steel plate (3); The inner steel plate (2) and the outer steel plate (3) are provided with through-wall bolts (5) passing through corresponding positions of the anti-collision guardrail (12) near the lower ends thereof, and the inner steel plate (2) and the outer steel plate (3) are clamped to the anti-collision guardrail (12) by nuts provided on the through-wall bolts (5); The lower end of the monitoring column (11) is provided with a base flange (9), which is fixed to the anti-collision guardrail (12) by bolts between the base flange (9) and the top steel plate (1); The anti-collision guardrail (12) is provided with a planted anchor bolt (7) and a pre-buried bolt (6) which pass upward through the bolt mounting hole of the base flange (9) at a position corresponding to the base flange (9), and the base flange (9), the top steel plate (1) and the top surface of the anti-collision guardrail (12) are tightly fixed by nuts provided on the planted anchor bolt (7) and the pre-buried bolt (6).

2. The monitoring facility foundation of the concrete anti-collision guardrail provided at the cantilever side of the bridge according to claim 1 is characterized in that: The anti-collision guardrail (12) is arranged at the suspended edge of the bridge cantilever (13).

3. The monitoring facility foundation of the concrete anti-collision guardrail provided at the cantilever side of the bridge according to claim 1 is characterized in that: The contact surface between the inner steel plate (2) and the anti-collision guardrail (12), as well as the contact surface between the outer steel plate (3) and the anti-collision guardrail (12), are both coated with Class A glue with a gap of 1mm±10%.

4. The monitoring facility foundation of the concrete anti-collision guardrail provided at the cantilever side of the bridge according to claim 1 is characterized in that: A plurality of connecting stiffening ribs (4) are provided between the portion of the top steel plate (1) extending toward the side of the outer steel plate (3) facing away from the anti-collision guardrail (12) and the outer steel plate (3); A plurality of column flange reinforcing ribs (8) are provided between the monitoring column (11) and the base flange (9).

5. The monitoring facility foundation of the concrete anti-collision guardrail provided at the cantilever side of the bridge according to claim 4 is characterized in that: Four connecting member stiffening ribs (4) are provided between the top steel plate (1) and the outer steel plate (3).

6. The monitoring facility foundation of the concrete anti-collision guardrail at the cantilever side of the bridge according to claim 1 is characterized in that: The inner steel plate (2) and the outer steel plate (3) are provided with more than three through-wall bolts (5) near the lower end along the length direction of the anti-collision guardrail (12).

7. The monitoring facility foundation of the concrete anti-collision guardrail provided at the cantilever side of a bridge according to claim 1, characterized in that: A leveling gasket (10) is provided between the bolt head of the through-wall bolt (5), the nut and the corresponding inner steel plate (2), or the corresponding outer steel plate (3).

8. The monitoring facility foundation of the concrete anti-collision guardrail at the cantilever side of the bridge according to claim 1 is characterized in that: The structure formed by the top steel plate and the inner steel plate (2) is formed by bending a single steel plate.

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