Fabricated bridge concrete guardrail

Abstract

The utility model relates to the technical field of concrete guardrails, in particular to an assembly type bridge concrete guardrail which comprises a concrete guardrail body, a through groove is formed in the bottom of the concrete guardrail body, and the through groove is formed in the length direction of a bridge. A fixed limiting piece is fixed to the position, corresponding to the through groove, of the top face of the bridge body, the vertical section of the fixed limiting piece is of a structure with the upper end, the lower end and the middle thin, and the upper end of the fixed limiting piece is open. A fixed anchoring part is vertically arranged on the inner side of the through groove and comprises an anchoring rod fixed in the through groove and a limiting head fixed to the lower end of the anchoring rod, the anchoring rod is inserted into the fixed limiting part, and the limiting head is located on the lower portion of the fixed limiting part; and cement mortar is poured into the through groove. The concrete guardrail is prefabricated, on-site assembly construction is adopted, a small amount of cement mortar is poured after the fixed anchoring part is inserted into the fixed limiting part, on-site steel bar binding and large-amount concrete pouring are not needed, the construction quality can be effectively guaranteed, the construction difficulty is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete guardrails, and more specifically, particularly to an assembled bridge concrete guardrail. Background Art

[0002] Guardrails are an important part of road bridges. They are usually located on both sides of the road and can effectively prevent vehicles from running out of the lane and causing more serious accidents. At present, the construction method of concrete bridge guardrails is mostly cast on site. That is, the anti-collision guardrail anchor steel bars are embedded in the bridge deck, and after the main beam construction is completed, the guardrail steel bars are tied on site and the concrete is poured. In on-site casting, the position of the embedded steel bars on the bridge deck is often inaccurate, resulting in insufficient thickness of the protective layer. During use, problems such as missing bars, rust expansion and cracking of concrete occur, which seriously affects the durability of the guardrail. In addition, the construction period of cast-in-place guardrails is long, there is a lot of construction waste, and it has a great impact on the environment. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model aims to provide an assembled bridge concrete guardrail, which adopts insertion connection, can significantly improve the construction efficiency of the bridge guardrail and ensure the construction quality.

[0004] A prefabricated bridge concrete guardrail comprises a concrete guardrail body, a through slot opening downward is provided at the bottom of the concrete guardrail body, and the through slot is provided along the length direction of the bridge; a fixed limit piece is fixed to the top surface of the bridge beam and at a position corresponding to the through slot, and the vertical cross-section of the fixed limit piece is a structure with thick ends and thin middle part, and the upper end of the fixed limit piece is open; a fixed anchor piece is vertically arranged on the inner side of the through slot, and the fixed anchor piece comprises an anchor rod fixed in the through slot and a limit head fixed at the lower end of the anchor rod, the anchor rod is inserted in the fixed limit piece, and the limit head is located at the lower part of the fixed limit piece; cement mortar is poured in the through slot.

[0005] Furthermore, a first fixing plate is arranged at the top of the through groove, a first anchor bolt is embedded in the concrete guardrail body, the first anchor bolt is fixedly connected to the first fixing plate, and the anchor rod is fixedly connected to the first fixing plate.

[0006] Furthermore, a second fixing plate is provided on the top surface of the bridge beam, a second anchor bolt is pre-embedded in the bridge beam, the second anchor bolt is fixedly connected to the second fixing plate, and the fixed limiter is fixedly connected to the second fixing plate.

[0007] Furthermore, the length of the fixed limit piece is the same as the length of the concrete guardrail body, and a plurality of fixed anchor pieces are arranged at equal intervals in the through groove.

[0008] Furthermore, the vertical cross-section of the fixed limiting member is in the shape of an hourglass with an open upper end.

[0009] Furthermore, the fixed stopper is made of an elastic steel plate, and when the fixed stopper is not inserted into the fixed anchoring piece, the width of the inner middle portion of the fixed stopper is equal to or smaller than the diameter of the anchoring rod.

[0010] Furthermore, the first fixing plate is a steel plate.

[0011] Furthermore, the second fixing plate is a steel plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The assembled bridge concrete guardrail in the utility model is an assembled concrete guardrail for highway bridges. It adopts precast concrete guardrails and is assembled and constructed on site. After the fixed anchor pieces are inserted into the fixed limit pieces, a small amount of cement mortar is poured and it can be used. There is no need to tie steel bars on site and pour a large amount of concrete. The construction quality can be effectively guaranteed, the construction difficulty can be reduced, and the construction period can be shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the assembled bridge concrete guardrail in the embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Enlarged view of the middle part of the structure.

[0017] Figure 3 It is a schematic diagram of the elevation structure of the assembled bridge concrete guardrail in the embodiment of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the second fixing plate in an embodiment of the utility model.

[0019] In the figure: 1. concrete guardrail body; 2. bridge beam body; 3. fixed limiter; 4. fixed anchor; 401. anchor rod; 402. limiter head; 5. cement mortar; 6. first fixing plate; 7. first anchor bolt; 8. second fixing plate; 9. second anchor bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 , Figure 2 As shown, the assembled bridge concrete guardrail in this embodiment includes a concrete guardrail body 1, and a through slot with an opening facing downward is opened at the bottom of the concrete guardrail body 1, and the through slot is opened along the length direction of the bridge. A fixed stopper 3 is fixed on the top surface of the bridge beam 2 and at a position corresponding to the through slot. The vertical section of the fixed stopper 3 is a structure with thick ends at the upper and lower ends and a thin middle part, and the upper end of the fixed stopper 3 is open.

[0022] Specifically, in this embodiment, the vertical section of the fixed stopper 3 is an hourglass shape with an opening at the upper end, the length of the fixed stopper 3 is the same as the length of the concrete guardrail body 1, and is made of an elastic steel plate. A second fixing plate 8 is provided on the top surface of the bridge beam 2, and the second fixing plate 8 is made of a steel plate. A second anchor bolt 9 is pre-embedded in the bridge beam 2, and the second anchor bolt 9 is welded to the second fixing plate 8, and the fixed stopper 3 is welded to the second fixing plate 8.

[0023] Preferably, the second fixing plate 8 has the same length as the fixing stopper 3. Figure 3 , Figure 4 As shown, a plurality of second anchor bolt groups are arranged at the bottom of the second fixing plate 8 , and each second anchor bolt group is composed of four second anchor bolts 9 arranged in a square structure, thereby ensuring the firmness of the second fixing plate 8 and the fixed limiter 3 .

[0024] In this embodiment, a fixed anchor 4 is vertically arranged inside the through slot, and the fixed anchor 4 includes an anchor rod 401 fixed in the through slot and a stopper 402 fixed at the lower end of the anchor rod 401, and the anchor rod 401 is inserted in the fixed stopper 3. When the fixed stopper 3 is not inserted with the fixed anchor 4, the width of the middle part of the inner side of the fixed stopper 3 is equal to or less than the diameter of the anchor rod 401. Preferably, the width of the middle part of the inner side of the fixed stopper 3 is less than the diameter of the anchor rod 401, so that the middle part of the fixed stopper 3 squeezes the anchor rod 401, and the stopper 402 is located at the lower part of the fixed stopper 3 and the top is in contact with the fixed stopper 3, which effectively prevents the fixed anchor 4 from being separated from the fixed stopper 3. Cement mortar 5 is poured into the through slot.

[0025] After the anchor rod 401 is inserted into the fixed stopper 3, the high-strength cement mortar 5 is pressed into the through groove from the end of the concrete guardrail body 1, and the strength of the cement mortar 5 is greatly enhanced by the hoop effect of the concrete, thereby limiting the position of the fixed stopper 3 and the fixed anchor 4. When a vehicle collides with the concrete guardrail body 1, the tensile force of the fixed anchor 4 prevents the concrete guardrail body 1 from overturning.

[0026] Specifically, in this embodiment, a first fixing plate 6 is arranged on the top of the through groove, the first fixing plate 6 is made of steel plate, a first anchor bolt 7 is embedded in the concrete guardrail body 1, the first anchor bolt 7 is welded to the first fixing plate 6, and the anchor rod 401 is made of steel screw and is welded to the first fixing plate 6.

[0027] Preferably, the length of the first fixing plate 6 is the same as that of the concrete guardrail body 1, and a plurality of first anchor bolt groups are arranged on the top of the first fixing plate 6, each of which is composed of four first anchor bolts 7 arranged in a square structure, thereby ensuring the firmness of the first fixing plate 6 and the fixing anchor 4. A plurality of fixing anchors 4 are arranged at equal intervals on the bottom surface of the first fixing plate 6, thereby enhancing the connection strength between the fixing anchor 4 and the fixing limiter 3.

[0028] The utility model provides an assembled bridge concrete guardrail, and the construction method is:

[0029] Step 1: pre-embed the first anchor bolt 7, the first fixing plate 6, the second anchor bolt 9, and the second fixing plate 8 in the concrete guardrail body 1 and the bridge beam body 2 respectively;

[0030] Step 2: Weld the fixing anchor 4 on the bottom surface of the first fixing plate 6;

[0031] Step 3: Welding the fixed stopper 3 on the top surface of the second fixed plate 8;

[0032] Step 4: hoist the precast concrete guardrail body 1 and insert the fixed anchor piece 4 into the fixed limit piece 3;

[0033] Step 5: Press high-strength cement mortar 5 into the groove.

[0034] When a vehicle collides with the concrete guardrail body 1 , the concrete guardrail body 1 is prevented from overturning by the tension of the fixing anchor 4 .

[0035] The assembled bridge concrete guardrail in this embodiment is an assembled concrete guardrail for highway bridges. It adopts precast concrete guardrails and is assembled and constructed on site. After the fixed anchor 4 is inserted into the fixed limit piece 3, a small amount of cement mortar 5 is poured and it can be used. There is no need to tie steel bars on site and pour a large amount of concrete. This can effectively ensure the construction quality, reduce the construction difficulty, and shorten the construction period.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An assembled bridge concrete guardrail, characterized in that: The invention comprises a concrete guardrail body (1), wherein a through slot with an opening facing downward is provided at the bottom of the concrete guardrail body (1), and the through slot is provided along the length direction of the bridge; a fixed stopper (3) is fixed on the top surface of the bridge beam body (2) and at a position corresponding to the through slot, and the vertical cross section of the fixed stopper (3) is a structure with thick ends at the upper and lower ends and thin middle part, and the upper end of the fixed stopper (3) is open; a fixed anchor (4) is vertically arranged inside the through slot, and the fixed anchor (4) comprises an anchor rod (401) fixed in the through slot and a stopper head (402) fixed at the lower end of the anchor rod (401), the anchor rod (401) is inserted in the fixed stopper (3), and the stopper head (402) is located at the lower part of the fixed stopper (3); cement mortar (5) is poured into the through slot.

2. The assembled bridge concrete guardrail according to claim 1 is characterized in that: A first fixing plate (6) is arranged at the top of the through groove, a first anchor bolt (7) is pre-buried in the concrete guardrail body (1), the first anchor bolt (7) is fixedly connected to the first fixing plate (6), and the anchor rod (401) is fixedly connected to the first fixing plate (6).

3. The assembled bridge concrete guardrail according to claim 2 is characterized in that: A second fixing plate (8) is arranged on the top surface of the bridge beam (2), a second anchor bolt (9) is pre-embedded in the bridge beam (2), the second anchor bolt (9) is fixedly connected to the second fixing plate (8), and the fixed stopper (3) is fixedly connected to the second fixing plate (8).

4. The assembled bridge concrete guardrail according to claim 3 is characterized in that: The length of the fixed stopper (3) is the same as that of the concrete guardrail body (1), and a plurality of fixed anchoring pieces (4) are arranged at equal intervals in the through groove.

5. The assembled bridge concrete guardrail according to claim 4 is characterized in that: The vertical cross section of the fixed limiting member (3) is in the shape of an hourglass with an open upper end.

6. The assembled bridge concrete guardrail according to claim 5, characterized in that: The fixed stopper (3) is made of an elastic steel plate; when the fixed stopper (3) is not inserted into the fixed anchor (4), the width of the inner middle portion of the fixed stopper (3) is equal to or smaller than the diameter of the anchor rod (401).

7. The assembled bridge concrete guardrail according to claim 2, characterized in that: The first fixing plate (6) is a steel plate.

8. The assembled bridge concrete guardrail according to claim 3 is characterized in that: The second fixing plate (8) is a steel plate.

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