Light assembly type anti-collision guardrail structure

Abstract

The utility model discloses a light assembly type anti-collision guardrail structure which comprises a guardrail body prefabricated part, a right-angle-shaped notch is formed in the bottom of the guardrail body prefabricated part and makes contact with the end of a beam body, the space between the contact faces is filled with filler, and the beam body and the right-angle-shaped notch are temporarily fixed. A cavity is formed in the guardrail body prefabricated part with the horizontal plane of the right-angle-shaped notch facing upwards, the top of the cavity is communicated with an inlet of a grout overflow hole, the grout overflow hole is formed in the guardrail body prefabricated part, an outlet of the grout overflow hole is located in the top wall of the guardrail body prefabricated part, and a grouting hole communicated with the cavity is formed in the lower portion of the side wall of the guardrail body prefabricated part. The grouting holes are used for pouring grout into the cavity, a plurality of connecting steel bars are pre-buried in the beam body to the top in the cavity, a plurality of positioning pieces are arranged on the beam body, and the outer edges of the positioning pieces are tightly attached to the inner wall of the inner side of the cavity. By the adoption of the structure, structural safety is guaranteed, the construction progress is accelerated, and the problem of anti-corrosion maintenance of connecting pieces is solved.

Description

Technical Field

[0001] The utility model relates to a light assembled anti-collision guardrail structure. Background Art

[0002] Bridge anti-collision guardrails are an important barrier to prevent vehicles from running out of the bridge structure and causing traffic accidents. Therefore, the effective connection between the anti-collision guardrail and the bridge structure is extremely important. At present, bridge guardrails mainly use cast-in-place technology, which has problems such as high cost, long cycle, difficult maintenance and low efficiency in construction.

[0003] The effective connection between the prefabricated anti-collision guardrail and the bridge structure is the key and difficulty. The existing prefabricated anti-collision guardrail and the bridge body are mostly connected by bolts, which requires high positioning accuracy, complex construction technology, and a large amount of later maintenance work. In addition, due to the limitation of lifting tonnage, the prefabricated section is slightly short and has many joints, which has a great impact on appearance and durability. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a light assembled anti-collision guardrail structure with simple process, high installation efficiency, no maintenance of connecting parts and low cost.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model discloses a light assembled anti-collision guardrail structure, comprising a prefabricated part of a guardrail body, wherein the bottom of the prefabricated part of the guardrail body is provided with a right-angled notch, the vertical surface and the horizontal surface of the right-angled notch are respectively in contact with the outer wall and the top surface of the end of the beam body, and a filler is used to fill the space between the contact surfaces so that the beam body and the right-angled notch are temporarily fixed; a cavity is opened in the prefabricated part of the guardrail body facing upward from the horizontal surface of the right-angled notch, the top of the cavity is connected with the inlet of the overflow hole, the overflow hole is opened in the prefabricated part of the guardrail body and the outlet is located on the top wall of the prefabricated part of the guardrail body, a grouting hole connected with the cavity is opened in the lower part of the side wall of the prefabricated part of the guardrail body, the grouting hole is used to pour slurry into the cavity, a plurality of connecting steel bars are pre-embedded in the beam body to the top of the cavity, a plurality of positioning members are arranged on the beam body, and the outer edges of the plurality of positioning members are in close contact with the inner wall inside the cavity.

[0007] The utility model ensures effective and reliable connection between the guardrail body and the beam body through the grouting part of the guardrail body and the pre-buried connecting steel bars, and has a high safety factor.

[0008] The utility model adopts a cavity form in the prefabricated part of the guardrail body, and after the prefabricated part is installed, grouting is performed to fill it, so the fault tolerance rate is high and the construction efficiency is high.

[0009] The utility model ensures accurate positioning of the guardrail by arranging the positioning piece, and ensures that the relative position relationship between the guardrail and the bridge structure is coordinated and unified.

[0010] The utility model increases the length of the prefabricated section, reduces on-site joints, and improves the durability and landscape of the guardrail structure by adopting lightweight concrete materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a light assembled anti-collision guardrail structure of the utility model;

[0012] Figure 2 for Figure 1 The schematic diagram of the installation of the light-weight assembled anti-collision guardrail structure shown;

[0013] Figure 3 for Figure 1 The schematic diagram of storage and transportation of the lightweight assembled anti-collision guardrail structure is shown. DETAILED DESCRIPTION

[0014] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] As shown in the accompanying drawings, the utility model is a light assembled anti-collision guardrail structure, including a prefabricated part 1 of the guardrail body, the bottom of which has a right-angled notch, the vertical and horizontal surfaces of which are in contact with the outer wall and the top surface of the end of the beam body, respectively, and a filler is used between the contact surfaces to temporarily fix the beam body and the right-angled notch, and the filler can be mortar or epoxy resin glue.

[0016] A cavity, namely the guardrail body grouting part 2, is opened in the guardrail body prefabricated part 1 facing upward from the horizontal plane of the right-angled groove, and the top of the cavity is connected to the inlet of the overflow hole 7. The overflow hole is opened in the guardrail body prefabricated part and the outlet is located on the top wall of the guardrail body prefabricated part.

[0017] A grouting hole 6 communicating with the cavity is provided at the lower part of the side wall of the prefabricated part of the guardrail body, and the grouting hole is used to pour slurry into the cavity.

[0018] A connecting steel bar 3 is embedded in the beam body to the top of the cavity. The diameter of the connecting steel bar is determined according to the magnitude of the force. After the grouting is completed, the connecting steel bar is maintenance-free.

[0019] A positioning member 4 is provided on the beam body, the outer edge of which is in close contact with the inner wall of the cavity and protrudes 5 cm above the beam body bridge deck. The positioning member 4 can be a positioning steel bar, which can be a small diameter steel bar with a diameter between 8 mm and 12 mm, and is only used for positioning and not for other purposes. The positioning steel bar can ensure the overall coordination between the prefabricated part 1 of the guardrail body and the beam body 5, and is convenient for adjusting the construction error during the construction process; the positioning member 4 can also be a concrete positioning block.

[0020] There are multiple connecting steel bars 3 and positioning pieces 4 pre-embedded in the beam body 5, which are evenly arranged along the longitudinal direction of the beam body.

[0021] The prefabricated part 1 of the guardrail body is a lightweight concrete prefabricated part, which reduces the weight of the guardrail, increases the length of the prefabricated section, and reduces the number of joints.

[0022] How to use this guardrail:

[0023] In actual use, first use lightweight concrete to prefabricate the guardrail body prefabricated part 1 in the prefabrication yard. When storing and transporting, this part will be placed on the ground or on a transport vehicle on its side, and the two legs of the cavity will be supported by square purlins 11; when constructing the beam body, pre-embed the connecting steel bars 3 and the positioning members 4; then, according to the position of the positioning members 4, the guardrail body prefabricated part 1 is installed on the beam body 5, and the contact surface is filled with mortar 9 or epoxy resin glue 8; finally, the guardrail body grouting part 2 is cast, and grouting is performed through the grouting holes 6 until slurry overflows from the overflow holes 7, and the grouting is stopped to complete the construction of the anti-collision guardrail.

[0024] The guardrail body grouting part 2 is completely located in the cavity of the guardrail body prefabricated part 1, and no formwork is required during pouring, which can effectively ensure safety during the construction process.

[0025] In specific implementation, the connecting steel bar 3 is directly embedded in the beam body 5, and after the guardrail body grouting part 2 is grouted, it forms a whole with the beam body. The guardrail body prefabricated part 1 and the guardrail body grouting part 2 are effectively nested to ensure the integrity of the anti-collision guardrail and the beam body 5.

[0026] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A light assembled anti-collision guardrail structure, characterized by: It includes a prefabricated part of a guardrail body, the bottom of which is provided with a right-angled notch, the vertical and horizontal surfaces of which are in contact with the outer wall and the top surface of the end of the beam body respectively, and a filler is used to fill the space between the contact surfaces so that the beam body and the right-angled notch are temporarily fixed; a cavity is opened in the prefabricated part of the guardrail body facing upward from the horizontal surface of the right-angled notch, the top of the cavity is connected with the inlet of the overflow hole, the overflow hole is opened in the prefabricated part of the guardrail body and the outlet is located on the top wall of the prefabricated part of the guardrail body, a grouting hole connected with the cavity is opened in the lower part of the side wall of the prefabricated part of the guardrail body, the grouting hole is used to pour slurry into the cavity, a plurality of connecting steel bars are pre-embedded in the beam body to the top of the cavity, a plurality of positioning members are arranged on the beam body, and the outer edges of the plurality of positioning members are in close contact with the inner wall of the cavity.

2. The light-weight assembled anti-collision guardrail structure according to claim 1 is characterized in that: The connecting steel bars and positioning pieces are evenly arranged along the longitudinal direction of the beam body.

3. The light assembled anti-collision guardrail structure according to claim 1 or 2, characterized in that: The multiple positioning members protrude 5 cm above the beam body and bridge deck.

4. The light assembled anti-collision guardrail structure according to claim 1 or 2, characterized in that: The positioning piece is a positioning steel bar or a concrete positioning block.

5. The light assembled anti-collision guardrail structure according to claim 1 or 2, characterized in that: The prefabricated part of the guardrail body is a lightweight concrete prefabricated part.

6. The light assembled anti-collision guardrail structure according to claim 1 or 2, characterized in that: The filler is mortar or epoxy resin glue.

Images