Bridge protection net and bridge with adaptive combination guardrail

Abstract

The utility model relates to bridge safety protection technical field especially, more particularly to a kind of bridge protection net and bridge of adaptive combination guardrail, the combination guardrail includes anchor plate and arc steel column fixed on anchor plate, the bridge protection net includes net body, stand and pedestal. Stand is fixed on pedestal, and net body is connected with stand. Pedestal is structured as its bottom end can be fixed on anchor plate, and pedestal has the accommodating cavity for the outside arc-shaped part of arc steel column on the anchor plate to pass in. Its beneficial effect is, compared with prior art, the utility model uses accommodating cavity for the outside arc-shaped part of arc steel column on the anchor plate to pass in on pedestal and bottom fixed on anchor plate, stand is fixed on pedestal, and net body is connected with stand, can be directly installed on combination guardrail, economical and practical, construction is convenient, foundation is more stable, effectively prevent personnel to climb and surmount.

Description

Technical Field

[0001] This utility model relates to the field of bridge technology, and in particular to a bridge protection net and bridge adapted to combined guardrails. Background Technology

[0002] Articles 9.5.1 and 9.5.4 of the "Code for Design of Urban Bridges" (CJJ 11-2011) stipulate that the height of the railings on the outer side of the pedestrian walkway or safety belt should not be less than 1.1m; when a bridge crosses important traffic such as expressways, urban rail transit, highways, and railway trunk lines, protective netting should be added to the pedestrian walkway railings on the bridge deck, and the height of the netting should not be less than 2m. According to the code, it is clear that the code does not provide explicit requirements for anti-climbing measures for the railings on the open side of conventional municipal elevated bridges. Bridge safety netting, also known as bridge protective netting, is installed on municipal elevated bridges, highway overpasses, railway overpasses, pedestrian bridges, etc., to prevent objects from being thrown and injuring people. This method effectively ensures the safety of pedestrians passing under the bridge and prevents vehicles from being injured by falling objects, mainly for the protection and safeguarding of both sides of the bridge. Composite guardrails are a type of vehicle protection measure used on municipal overpasses. They consist of concrete crash barriers, steel structure supports, and steel structure beams. The steel structure supports include curved steel columns with fixed holes and anchor plates. The curved steel columns are fixedly connected to the concrete crash barriers through the anchor plates, and the steel structure beams are fixed in the holes of the curved steel columns.

[0003] In the existing technology, the height of the railings on the air-facing side of municipal elevated bridges is too low, and the protective nets used when crossing important traffic are all simple vertical protective nets, which do not have the function of preventing climbing and overturning. They have poor appearance and low durability, and cannot meet the safety protection requirements for preventing people from climbing. In contrast, the original bridges have already been equipped with combined guardrails on both sides.

[0004] Therefore, a bridge protection net and bridge that can be installed on the original guardrail structure and is anti-climbing is proposed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a bridge protection net and bridge adapted to combined guardrails, which solves the technical problem that the existing technology cannot be installed on the original guardrail structure and prevents climbing.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] On the one hand, this utility model embodiment provides a bridge protection net adapted to a combined guardrail. The combined guardrail includes an anchor plate and an arc-shaped steel column fixed on the anchor plate. The bridge protection net includes a net body, a column, and a base. The column is fixed on the base, and the net body is connected to the column. The base is constructed such that its bottom end can be fixed on the anchor plate, and the base has a receiving cavity for the outer arc-shaped portion of the arc-shaped steel column on the anchor plate to pass through.

[0010] Optionally, the base includes a top plate and three vertical plates, which are connected to form a receiving cavity; the top ends of the three vertical plates are fixed to the top plate, and the bottom ends can be fixed to the anchor plate, with an inwardly recessed arc-shaped groove at the upper part of the free ends of the two vertical plates; the column is fixed to the top plate.

[0011] Optionally, multiple ribs symmetrical about the left and right sides of the column are provided between the bottom and top plate of the column; the base is also provided with cross-shaped stiffening ribs, which are fixedly connected to the column plate and the top plate.

[0012] Optionally, the column includes a vertical column segment and an arc-shaped column segment that bends inward from the top of the vertical column segment; the mesh includes a rectangular frame, steel strip groups, and a mesh sheet, the mesh sheet being a mesh structure with a certain permeability, the four sides of the mesh sheet being fixed to the rectangular frame, the top of the rectangular frame having an arc-shaped portion matching the arc-shaped segment of the column; a horizontally extending steel strip group is provided at the bend of the mesh sheet corresponding to the column, and its two ends are connected to the rectangular frame to define an arc-shaped area at the top of the mesh sheet that matches the arc-shaped portion of the rectangular frame; optionally, a vertically extending steel strip group is provided between the horizontally extending steel strip group and the top edge of the rectangular frame; each steel strip group includes two steel strips clamping the mesh sheet.

[0013] Optionally, bolts are used to connect the intersections of the horizontally extending steel strip groups and the vertically extending steel strip groups, the intersections of the horizontally extending steel strip groups and the rectangular frame, and the intersections of the vertically extending steel strip groups and the rectangular frame.

[0014] Optionally, the mesh body and the posts are connected by multiple sets of connecting components spaced apart along the longitudinal direction. Each set of connecting components includes lugs, rivet nuts, and bolts that are connected to the posts. A through hole is provided on the rectangular frame, and a round hole or an elliptical hole is provided on the lugs. The bolts pass through the through hole on the rectangular frame and the hole on the lugs and are connected to the rivet nuts. The elliptical holes are transverse in length and have a length of 60-80 mm.

[0015] Optionally, the top of the mesh body is also provided with a rough edge that extends 10-30mm relative to the rectangular frame, and the rough edge is constructed as an outward-facing barbed structure.

[0016] Optionally, the vertical height of the netting is greater than 2m.

[0017] On the other hand, this utility model embodiment provides a bridge including a combined guardrail. The combined guardrail includes an anchor plate and an arc-shaped steel column fixed to the anchor plate, and also includes the aforementioned bridge safety net adapted to the combined guardrail. The bottom end of the base of the safety net is welded to the anchor plate, and the outer arc-shaped portion of the arc-shaped steel column penetrates into the receiving cavity of the base; at the position where the arc-shaped steel column penetrates into the receiving cavity, the gap between the base and the arc-shaped steel column is filled with PE rods; at the opening of the receiving cavity, the PE rods and the base and arc-shaped steel columns on both sides are sealed with weather-resistant sealant.

[0018] Optionally, the mesh body and the posts are connected by multiple sets of connecting components spaced longitudinally. Each set of connecting components includes lugs, rivet nuts, and bolts that connect to the posts. A through hole is provided on the rectangular frame. When the mesh body is located at a bridge expansion joint, the lugs on the posts connecting the mesh body have elliptical holes. Bolts pass through the through holes on the rectangular frame and the elliptical holes on the lugs to connect with the rivet nuts. The length of the elliptical holes is transverse and has a length of 60-80 mm. When the mesh body is located at a bridge expansion joint, the lugs on the posts connecting the mesh body have round holes. Bolts pass through the through holes on the rectangular frame and the round holes on the lugs to connect with the rivet nuts, and the rivet nuts are fixed to the round holes on the lugs.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a bridge safety net and bridge adapted to a combined guardrail. The combined guardrail includes an anchor plate and arc-shaped steel columns fixed to the anchor plate. The bridge safety net includes a net body, columns, and a base. The columns are fixed to the base, and the net body is connected to the columns. The base is constructed such that its bottom end can be fixed to the anchor plate, and the base has a receiving cavity for the outer arc-shaped portion of the arc-shaped steel column on the anchor plate to pass through. Compared with the prior art, this utility model uses a receiving cavity on the base for the outer arc-shaped portion of the arc-shaped steel column on the anchor plate to pass through, and the bottom is fixed to the anchor plate. The columns are fixed to the base, and the net body is connected to the columns. It can be directly installed on the combined guardrail, which is economical, practical, easy to construct, and provides a more stable foundation, effectively preventing people from climbing and crossing over. Attached Figure Description

[0022] Figure 1 This is a partial side view of an embodiment of the bridge of this utility model, including a combined guardrail and a bridge safety net adapted to the combined guardrail. In order to clearly show the structure, the base 5 is shown in perspective.

[0023] Figure 2 for Figure 1 A partial frontal view of a bridge safety net with an adapted combination guardrail at a non-expansion joint of a bridge is shown.

[0024] Figure 3for Figure 1 The diagram shows a partial front view of the bridge safety netting adapted to the combined guardrail at the bridge expansion joint.

[0025] [Explanation of Labels in the Attached Image]

[0026] 1: Anchor plate;

[0027] 2: Curved steel column;

[0028] 3: Mesh body; 31: Steel bar assembly; 32: Mesh panel; 33: Rectangular frame;

[0029] 4: Column; 41: Vertical column segment; 42: Curved column segment;

[0030] 5: Base; 51: Top plate; 52: Vertical plate;

[0031] 6: Connecting component; 61: Ear; 62: Rivet nut; 63: Bolt;

[0032] 7: PE rod;

[0033] 8: Weather-resistant sealant;

[0034] 9: Ribs;

[0035] 10: Rough edges;

[0036] 11: Reinforcing ribs. Detailed Implementation

[0037] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1:

[0039] Reference Figure 1 , Figure 2 and Figure 3 This embodiment provides a bridge, preferably a municipal viaduct or highway bridge. The bridge in this embodiment includes a composite guardrail, which is a vehicle protection measure. It includes a concrete crash barrier, a steel structure support, and a steel structure beam. The steel structure support includes an arc-shaped steel column 2 with fixed holes and an anchor plate 1. The arc-shaped steel column 2 is fixedly connected to the concrete crash barrier via the anchor plate 1, and the steel structure beam is fixed in the holes of the arc-shaped steel column 2.

[0040] Furthermore, the bridge in this embodiment also includes a bridge safety net adapted to the aforementioned combined guardrail. The structure of the safety net at the bridge's expansion joints and non-expansion joints is adjusted accordingly, but the main structure remains the same. Details are as follows.

[0041] Reference Figure 1 , Figure 2 and Figure 3The bridge safety net consists of net body 3, posts 4, and base 5. Posts 4 and base 5 are used to connect with the composite guardrail and serve as the foundation supporting the bridge safety net, while net body 3 is the main protective structure. Typically, posts 4 and base 5 are installed in a one-to-one correspondence, with a net body 3 connecting two adjacent posts 4.

[0042] In this embodiment, the base 5 includes a top plate 51 and three upright plates 52. The top plate 51 and the three upright plates 52 are interconnected to form a receiving cavity, which is used for the outer arc-shaped portion of the arc-shaped steel column 2 to pass through. Specifically, the connection between the top plate 51 and the three upright plates 52 can be welding, bonding, or riveting. The bottom ends of the three upright plates 52 can also be fixedly connected to the anchor plate 1 by welding, bonding, or riveting, with welding being preferred. Furthermore, an inwardly recessed arc-shaped groove is provided at the upper part of the free ends of two opposite upright plates 52. This arc-shaped groove allows the base 5 to form an effective installation distance with the arc-shaped steel column 2 of the combined guardrail during installation, providing ample space for operation and facilitating the insertion of the outer arc-shaped portion of the arc-shaped steel column 2 into the receiving cavity. The specific size of the groove is adapted to the actual arc-shaped steel column 2 required for installation.

[0043] In addition, the base 5 is located on the anchor plate 1, which is fixed to the concrete crash barrier. The concrete crash barrier is integrally connected to the bridge steel reinforcement and has high strength. Therefore, the connection strength of the base 5 is high and the foundation is more stable.

[0044] To further enhance strength, the base 5 is further connected to the curved steel column 2, specifically as follows: Due to the difference in internal shape between the curved steel column 2 and the receiving cavity, the size of the receiving cavity is slightly larger than that of the curved steel column 2, creating a gap. Therefore, at the location where the curved steel column 2 enters the receiving cavity, the gap between the base 5 and the curved steel column 2 is filled with a PE rod 7. At the opening of the receiving cavity, weather-resistant sealant 8 is applied to seal the PE rod 7 and its sides, as well as the base 5 and the curved steel column 2. Thus, through the adhesive of the PE rod 7, the curved steel column 2 and the base 5 are indirectly connected. In addition to improving strength, the base 5 contains a section of curved steel column 2, but there is still a gap in the middle. The gap can allow liquids or debris to enter, which can corrode or damage the base 5. PE rods 7 are used to fill the gap, so that there are no gaps inside the base 5, preventing debris from entering. Weather-resistant sealant 8 is used to seal the gap, which can prevent the entry of various liquids and further ensure the stability of the base 5.

[0045] In addition, from Figure 1It can be seen that the base 5 is also provided with a cross-shaped stiffening rib 11. The cross-shaped stiffening rib 11 is fixedly connected to the three upright plates 52 and the top plate 51. Specifically, in order to enhance the strength and stability of the base 5, the three upright plates 52 and the top plate 51 are connected together by the cross-shaped stiffening rib 11.

[0046] In summary, compared with the prior art, this embodiment uses a receiving cavity on the base through which the outer arc-shaped part of the arc-shaped steel column on the anchor plate passes and the bottom is fixed on the anchor plate. The column is fixed on the base, and the mesh is connected to the column. It can be directly installed on the combined guardrail, which is economical and practical, easy to construct, and has a more stable foundation, effectively preventing people from climbing and crossing.

[0047] Figure 1 As clearly shown, the column 4 in this embodiment includes a vertical column segment 41 and an arc-shaped column segment 42 that bends inward from the top of the vertical column segment 41. The vertical column segment 41 is fixed to the top plate 51. Specifically, the vertical column segment 41 and the arc-shaped column segment 42 can be integrally formed, or they can be separate parts connected together by welding or bonding. Of course, the column 4 can be cylindrical, cuboid, or other prism shapes, and the surface of the column 4 has a certain color anti-corrosion coating, which is aesthetically pleasing and has a longer service life.

[0048] In addition, based on the direct fixing of the column 4 to the top plate 51, multiple ribs 9 are provided between the bottom of the column 4 and the top plate 51, which are symmetrical about the left and right sides of the column 4. In order to enhance the connection strength of the column 4, one side of the rib 9 is fixedly connected to the top plate 51 and the other side is fixedly connected to the column 4. The connection method can be welding, gluing or riveting. The multiple ribs 9 that are symmetrical about the left and right sides can be used to support the column 4 by utilizing the strength of the ribs 9.

[0049] In summary, the above designs, through various structural modifications, enhance the connection strength between the protective netting and the compatible combined guardrails, thereby improving safety. This is especially suitable for areas prone to severe weather such as strong winds and heavy rain.

[0050] Furthermore, the net 3 in this embodiment specifically includes a rectangular frame 33, a steel strip group 31, and a mesh panel 32. The mesh panel 32 is a mesh structure with a certain degree of permeability. This structure not only reduces weight but also prevents people from climbing, as there is nowhere to stand. Therefore, the net 3 has a certain degree of anti-climbing performance. Moreover, the permeability of the net 3 allows a large amount of wind to pass through, and the wind resistance it experiences is negligible. The horizontal force of the wind load is almost non-existent, thus there is no issue of the net 3 being affected by wind.

[0051] In addition, the four sides of the mesh panel 32 are fixed to the rectangular frame 33. The top of the rectangular frame 33 has an arc-shaped portion that matches the arc-shaped segment of the post 4. Therefore, the overall shape of the mesh panel 32 is fixed by the rectangular frame 33, ensuring that the mesh panel 32 does not deform and also allowing for better connection of the mesh panel 32. The overall shape of the rectangular frame 33 is rectangular, but because the protective net is adapted to the arc-shaped steel post 2 and anchor plate 1 of the combined fence, the bottom of the rectangular frame 33 can optionally form a notch to accommodate the base 5. Generally speaking, in Figure 2 and Figure 3 The rectangular frame 33 shown does not correspond to the bridge expansion joint and has this notch, while the rectangular frame 33 corresponding to the bridge expansion joint does not have this notch.

[0052] Furthermore, a horizontally extending steel strip group 31 is provided at the bend of the mesh 32 corresponding to the column 4, and its two ends are connected to the rectangular frame 33 to define the top of the mesh 32 to form an arc-shaped area that matches the arc-shaped part of the rectangular frame 33. Optionally, a longitudinally extending steel strip group 31 is provided between the horizontally extending steel strip group 31 and the top edge of the rectangular frame 33. Whether or not a longitudinally extending steel strip group 31 is provided for a rectangular frame 33 depends on the width of the rectangular frame 33. A wider rectangular frame 33 will accommodate one or more longitudinally extending steel strip groups 31 to enhance the stability of the arc-shaped structure, improve the structural rigidity, and increase the durability of the structure.

[0053] Whether it is a horizontally extending steel bar group 31 or a vertically extending steel bar group 31, the steel bar group 31 includes two steel bars that clamp the mesh 32. The steel bar group 31 can not only provide support for fixing the arc shape of the mesh 32, but also maintain the overall shape of the mesh 32 in the future.

[0054] Therefore, bolts 63 are used to connect the intersection points of the horizontally extending steel strip group 31 and the vertically extending steel strip group 31 (if any), the intersection points of the horizontally extending steel strip group 31 and the rectangular frame 33, and the intersection points of the vertically extending steel strip group 31 (if any) and the rectangular frame 33, so that the connection of the steel strip group 31 is fixed as a whole, which facilitates installation.

[0055] Meanwhile, the height of the upright post 4 is roughly the same as the height of the netting 3. The vertical height of the netting 3 is greater than 2m. The top of the netting 3 also features a rough edge 10 extending 10-30mm beyond the rectangular frame 33. The rough edge 10 has an outward-facing barbed structure, effectively preventing people from climbing the protective netting. The arc-shaped structure at the top, the height of the netting 3, and the rough edge 10 together effectively prevent climbing and crossing, improving safety. (Refer to...) Figure 2 , Figure 2The three columns 4 and the mesh 3 between adjacent columns 4 are all located at non-expansion joints of the bridge. At this time, the columns 4 and the mesh 32 are connected by a connecting component 6. The connecting component 6 includes lugs 61 connected to the columns 4, rivet nuts 62 and bolts 63. The rectangular frame 33 of the mesh 3 has corresponding through holes. The lugs 61 have through round holes. The rivet nuts 62 are fixedly connected to the through round holes, including but not limited to welding, gluing and riveting. The bolts 63 are threaded to the rivet nuts 62 after passing through the through holes on the rectangular frame 33 and connecting to the round holes of the lugs 61. The connection method is simple and reliable, and can be fixed from the inside of the bridge, which improves the safety of construction.

[0056] Reference Figure 3 , Figure 3 The mesh 3 between the two central columns 4 is significantly narrower than the other mesh 3. This narrow mesh 3 is located at the bridge's expansion joint. At this point, the holes on the lugs 61 of the columns 4 are no longer through-holes, but elliptical holes. Bolts 63 are used to connect the through-holes in the rectangular frame 33 to the through-holes in the lugs 61, and then to the threaded connection with the rivet nuts 62. The rivet nuts 62 are no longer fixedly connected to the lugs 61. When the rivet nuts 62 and bolts 63 fix the mesh 32, the rivet nuts 62 are movable within the lugs 61. Both columns 4 on the side corresponding to the expansion joint have lugs 61 with elliptical holes. The length of the elliptical holes is transverse, with a length of 60-80mm. When the bridge shifts at the expansion joint, the protective mesh can also shift to a certain extent. Therefore, this protective mesh can be continuously installed on the bridge.

[0057] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A bridge protection net adapted to a combined guardrail, said combined guardrail comprising an anchor plate (1) and an arc-shaped steel column (2) fixed on said anchor plate (1), characterized in that, The bridge protection net includes a net body (3), a column (4), and a base (5); The column (4) is fixed on the base (5), and the mesh (3) is connected to the column (4); The base (5) is constructed such that its bottom end can be fixed on the anchor plate (1) and has a receiving cavity into which the outer arc-shaped portion of the arc-shaped steel column (2) on the anchor plate (1) can pass.

2. The bridge safety net adapted for combined guardrails according to claim 1, characterized in that, The base (5) includes a top plate (51) and three vertical plates (52), which are connected to form the receiving cavity; The top ends of the three upright plates (52) are fixed to the top plate (51), and the bottom ends can be fixed to the anchor plate (1). The upper part of the free ends of the two upright plates (52) has an inwardly recessed arc-shaped groove. The column (4) is fixed on the top plate (51).

3. The bridge protection netting adapted for combined guardrails as described in claim 2, characterized in that, Multiple ribs (9) are provided symmetrically about the left and right sides of the column (4) between the bottom of the column (4) and the top plate (51). The base (5) is also provided with a cross-shaped stiffening rib (11) inside, and the stiffening rib (11) is fixedly connected to the upright plate (52) and the top plate (51).

4. The bridge protection netting adapted to the combined guardrail as described in claim 1, characterized in that, The column (4) includes a vertical column segment (41) and an arc-shaped column segment (42) that bends inward from the top of the vertical column segment (41). The mesh body (3) includes a rectangular frame (33), a steel strip group (31) and a mesh (32). The mesh (32) is a mesh structure with a certain permeability. The four sides of the mesh (32) are fixed on the rectangular frame (33). The top of the rectangular frame (33) has an arc-shaped part that matches the arc-shaped segment of the column (4). A horizontally extending steel bar group (31) is provided at the bend of the mesh (32) corresponding to the column (4), and its two ends are connected to the rectangular frame (33) to define an arc-shaped area at the top of the mesh (32) that matches the arc-shaped portion of the rectangular frame (33). Optionally, a vertically extending steel bar group (31) is provided between the horizontally extending steel bar group (31) and the top edge of the rectangular frame (33). Each of the steel bar groups (31) includes two steel bars that clamp the mesh (32).

5. The bridge protection netting adapted for combined guardrails as described in claim 4, characterized in that, The junctions of the horizontally extending steel strip group (31) and the vertically extending steel strip group (31), the junctions of the horizontally extending steel strip group (31) and the rectangular frame (33), and the junctions of the vertically extending steel strip group (31) and the rectangular frame (33) are all bolted together.

6. The bridge protection netting adapted for combined guardrails as described in claim 4, characterized in that, The mesh (3) is connected to the column (4) by multiple sets of connecting components (6) arranged longitudinally at intervals. Each set of connecting components (6) includes an ear piece (61), a rivet nut (62) and a bolt (63) connected to the column (4). The rectangular frame (33) is provided with a through hole, and the ear piece (61) is provided with a round hole or an elliptical hole. The bolt (63) passes through the through hole on the rectangular frame (33) and the hole on the ear piece (61) and is connected to the rivet nut (62). The elliptical hole is horizontal in its length direction and has a length of 60-80 mm.

7. The bridge safety net adapted for combined guardrails as described in claim 4, characterized in that, The top of the mesh (3) is also provided with a rough edge (10) that extends 10-30mm from the rectangular frame (33), and the rough edge (10) is constructed as an outward-facing spiky structure.

8. The bridge safety net adapted for combined guardrails according to claim 1, characterized in that, The vertical height of the net (3) is greater than 2m.

9. A bridge comprising a combined guardrail comprising an anchor plate (1) and an arc-shaped steel column (2) fixed to the anchor plate (1), characterized in that, It also includes a bridge safety net having the adaptable combination guardrail as described in any one of claims 1-5, 7, and 8; The bottom end of the base (5) is welded to the anchor plate (1), and the outer arc-shaped part of the arc-shaped steel column (2) penetrates the receiving cavity; At the location where the arc-shaped steel column (2) enters the receiving cavity, the gap between the base (5) and the arc-shaped steel column (2) is filled with PE rods (7); At the opening of the receiving cavity, the PE rod (7) and the base (5) on both sides and the arc-shaped steel column (2) are sealed with weather-resistant sealant (8).

10. The bridge according to claim 9, characterized in that, The mesh (3) is connected to the column (4) by multiple sets of connecting components (6) arranged longitudinally at intervals. Each set of connecting components (6) includes an ear piece (61), a rivet nut (62) and a bolt (63) connected to the column (4). The rectangular frame (33) is provided with a through hole. When the mesh (3) is located at the bridge expansion joint, the ear piece (61) on the column (4) connecting the mesh (3) is provided with an elliptical hole. The bolt (63) passes through the through hole on the rectangular frame (33) and the elliptical hole of the ear piece (61) and is connected to the rivet nut (62). The length direction of the elliptical hole is horizontal, and the length is 60-80 mm. When the net body (3) is located at the non-expansion joint of the bridge, the ear piece (61) on the column (4) connecting the net body (3) is provided with a round hole, the bolt (63) passes through the through hole on the rectangular frame (33) and the round hole of the ear piece (61) and is connected to the rivet nut (62), and the rivet nut (62) is fixed on the round hole of the ear piece (61).

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