A Reinforcement Device and Method for Local Structural Defects of Highway Gantry Signs

Abstract

The present invention discloses a reinforcement device and method for local structural defects of highway gantry signs, including a sign panel, an upper cross beam, a lower cross beam and a strut. A second skeleton arranged horizontally is fixedly connected to the sign panel, and a first skeleton arranged vertically is fixedly connected to the second skeleton. There are two struts, and both the upper cross beam and the lower cross beam are fixedly arranged between the struts; the peripheries of the upper cross beam and the lower cross beam are fixedly connected to the first skeleton. The steps are as follows: S1: Panel reinforcement; S2: Bottom support reinforcement; S3: New reinforcement; S4: Cross beam reinforcement; S5: Assembly. The maximum stress of the reinforced and transformed sign panel is 190 MPa, which is slightly beyond the strength limit of the original material compared with 473 MPa. The maximum displacement is 243 mm, and the value is reasonable. Among them, the maximum stress is reduced by 59.8% compared with the original, and the maximum displacement is reduced by 89% compared with the original. The transformation effect is very significant, and the strength of the sign panel is significantly increased.

Description

Technical Field

[0001] The present invention relates to the field of highway traffic, and particularly to a reinforcement device for local structural defects of gantry signs on in-service expressways, and a reinforcement method for local structural defects of gantry signs on in-service expressways. Background Art

[0002] During the construction process of expressway projects, due to reasons such as early design defects, construction quality control, and construction period constraints, the problems of local structural defects in gantry traffic signs on completed expressways are diverse and widespread. These gantry signs with local structural defects often have a negative impact on the overall structural performance or local structure of the gantry traffic signs, thus affecting the service of the gantry signs on the expressway in operation.

[0003] Reinforcing and reconstructing in-service gantry traffic signs with local structural defects on the expressway section in use is much more difficult than constructing new gantry signs on a newly built expressway, mainly manifested in the following points: First, the main structure of the gantry sign has been constructed, and there is not much room for modification. The transformation and improvement of the local structure need to fully consider the current situation of the gantry sign; Second, demolishing and reconstructing the entire gantry traffic sign is a very uneconomical practice. In reality, only local reinforcement and reconstruction are appropriate. This need for reinforcement and reconstruction restricts the choice of reinforcement methods. For example, when using welding technology on-site, it will damage the galvanized layer of the steel structure, thus affecting the normal use of the gantry sign; Finally, local renovation plans are often implemented on the expressway section in use, and the feasibility of the reinforcement plan and the convenience of plan implementation need to be fully considered. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a reinforcement device for local structural defects of gantry signs on expressways, which has a simple structure, is easy to use, and has a very remarkable transformation effect, significantly increasing the strength of the identification panel.

[0005] Another purpose of the present invention is to provide a reinforcement method for a reinforcement device for local structural defects of gantry signs on expressways. The method is easy to implement and simple to operate. The maximum stress of the identification panel after reinforcement and reconstruction is 190 MPa, compared with 473 MPa, slightly exceeding the strength limit of the original material. The maximum displacement is 243 mm, and the value is reasonable. Among them, the maximum stress is reduced by 59.8% compared with the original, and the maximum displacement is reduced by 89% compared with the original, effectively increasing the strength of the sign panel and having a better reinforcement effect.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] A reinforcement device for local structural defects of a highway gantry sign, comprising a sign panel, an upper cross beam, a lower cross beam and a strut. A second skeleton arranged horizontally is fixedly connected to the sign panel, and a first skeleton arranged vertically is fixedly connected to the second skeleton. There are two struts, and both the upper cross beam and the lower cross beam are fixedly arranged between the struts; the outer peripheries of the upper cross beam and the lower cross beam are fixedly connected to the first skeleton, and first connecting rods are fixedly connected between the upper cross beams and between the lower cross beams. A diagonal bracing mechanism is slidably arranged between the first connecting rods. The diagonal bracing mechanism includes a first diagonal rod, a steel plate with an L-shaped structure and a U-shaped bolt. The steel plate is fixedly connected to both ends of the first diagonal rod, and the steel plate is fixedly connected between the first connecting rods through the U-shaped bolt. The first diagonal rod is in an inclined state.

[0008] As a preferred technical solution of the present invention, the steel plate is slidably arranged between the first connecting rods. The U-shaped bolt is arranged at the position corresponding to the first connecting rod on the steel plate, and the U-shaped bolt is fixedly sleeved on the outer periphery of the first connecting rod. The U-shaped bolt is arranged at the position corresponding to the upper cross beam and the lower cross beam on the steel plate, and the U-shaped bolt is fixedly sleeved on the outer peripheries of the upper cross beam and the lower cross beam.

[0009] As a preferred technical solution of the present invention, U-shaped connecting rods are fixedly connected to both ends of the upper cross beam and the lower cross beam through fixing nuts, and the U-shaped connecting rods are fixedly connected to the struts.

[0010] As a preferred technical solution of the present invention, a horizontally arranged third connecting rod is fixedly connected between the struts, and third diagonal rods in an inclined state are fixedly connected between the third connecting rods.

[0011] As a preferred technical solution of the present invention, a horizontally arranged second connecting rod is fixedly connected between the upper cross beam and the lower cross beam, and second diagonal rods in an inclined state are fixedly connected between the second connecting rods.

[0012] As a preferred technical solution of the present invention, a connecting skeleton is arranged between the first skeletons, a hoop is fixedly arranged on the connecting skeleton, and the hoop is fixedly connected to the first skeleton through a limit bolt.

[0013] As a preferred technical solution of the present invention, both ends of the connecting skeleton are fixedly connected to the second skeleton.

[0014] Through the combined setting of the steel plate and the limit bolt, the present invention converts the conventional welding process of the gantry sign cross beam structure into a riveting reinforcement process. While ensuring the structural strength, the construction process and the reinforcement method are simplified, the technical difficulty of the gantry sign reinforcement in the open traffic section is effectively reduced, and the reinforcement efficiency is greatly improved.

[0015] A reinforcement method for local structural defects of a highway gantry sign, comprising the following steps:

[0016] S1: Panel reinforcement: Horizontally and fixedly connect the second skeleton to the back of the sign panel, and then vertically and fixedly connect the first skeleton to the first skeleton by welding;

[0017] Use a hoop to fixedly connect the connecting skeleton between the first skeletons, and then weld the hoop to the first skeleton to complete the reinforcement of the sign panel;

[0018] S2: Bottom support reinforcement: Horizontally and fixedly connect the third connecting rod between the struts, and then obliquely and fixedly connect the third diagonal rod between the third connecting rods by welding to complete the reinforcement of the bottom struts;

[0019] S3: New reinforcement: Horizontally and fixedly connect the first connecting rod between the upper cross beam and the lower cross beam, then obliquely and fixedly connect the first diagonal rod between the steel plates, then slidably insert the steel plates between the first connecting rods, and then use U-bolts to fixedly connect the steel plates to the first connecting rods and use U-bolts to fixedly connect the steel plates to the upper cross beam and the lower cross beam, and then weld the steel plates and the U-bolts to effectively reinforce the upper cross beam and the lower cross beam and increase the wind resistance performance;

[0020] S4: Cross beam reinforcement: Fix the second connecting rod between the upper cross beam and the lower cross beam, then obliquely and fixedly connect the second diagonal rod between the second connecting rods, and then fixedly connect the U-shaped connecting rod to both ends of the upper cross beam and the lower cross beam through fixing nuts; the fixing method is welding;

[0021] S5: Assembly: Place the sign panel at the upper cross beam and the lower cross beam, then use a hoop to fix it on the upper cross beam and the lower cross beam, and then fixedly connect the U-shaped connecting rod to the top of the strut by welding.

[0022] Through the technical measures of the above five steps:

[0023] Through the finite element analysis of the space structure, on the premise of meeting the stress conditions, the defective part of the original gantry sign structure with local structural defects is reinforced by riveting. While ensuring the overall performance of the original gantry sign structure, it also well takes into account the difficulty of construction in the traffic section. The components of the reinforced part can be processed off-site and riveted on-site, which ensures the structural strength while greatly simplifying the construction process and construction difficulty and improving the construction efficiency. It avoids the overall or large-scale disassembly of the sign structure and returning to the factory for transformation, which is a significant improvement in the current structural transformation process and method and a remarkable technological progress. Moreover, the result of the present invention comes from engineering projects and has been tested by actual project practice, and the reinforcement and transformation effect is good.

[0024] Advantages that the present invention can achieve compared with the prior art:

[0025] (1) The overall structure of the gantry sign is strengthened.

[0026] Assume that the maximum wind load on the highway at a height of 7m is about a kPa, and the sign area A = 3.5×3.3m 2 = 11.55m 2

[0027] Then the overall stress F received at each sign connection is F = 11.55akN

[0028] The crossbeam with the sign is stressed as Figure 12 shown

[0029] According to the displacement method, the bending moment received at end A is:

[0030] M A = (2.62 + 3.07 + 2.21 + 0.91)×11.55akN·m = 101.76akN·m

[0031] The bending moment received at end B

[0032] M B = (2.90 + 2.94 + 1.89 + 0.62)×11.5akN·m = 96.44akN·m

[0033] M A >M B , check the force at end A

[0034] There are four beams connecting to the side columns at end A, and the bending moment borne by each is

[0035] The bending section modulus of the beam

[0036] The maximum normal stress received by the beam

[0037] Considering the safety factor, the designed maximum stress borne by the beam is 180MPa

[0038] At this time, a < 0.292

[0039] The relationship between the wind speed V and the wind load is:

[0040] It is obtained that: V ≤ 18.5m / s

[0041] The wind speed of a force 9 wind is V = 20.8~24.4m / s

[0042] In summary, the connection of the crossbeam is safe under strong winds of level 8 or below.

[0043] (2) Reinforcement of the sign panel structure:

[0044] The maximum stress of the sign panel after reinforcement and transformation is 190 MPa, which is slightly beyond the strength limit of the original material compared to 473 MPa. The maximum displacement is 243 mm, and the value is reasonable. Among them, the maximum stress is reduced by 59.8% compared to the original, and the maximum displacement is reduced by 89% compared to the original. The transformation effect is very significant, and the strength of the sign panel is significantly increased. Description of the Drawings

[0045] Figure 1 It is the front view of the present invention;

[0046] Figure 2 It is the schematic diagram of the sign panel of the present invention;

[0047] Figure 3 It is the side view of the strut of the present invention;

[0048] Figure 4 It is the schematic diagram of the connection structure of the upper crossbeam and the lower crossbeam of the present invention;

[0049] Figure 5 It is the top view of the upper crossbeam of the present invention;

[0050] Figure 6 It is the present invention Figure 5 The enlarged structure schematic diagram of area A in;

[0051] Figure 7 It is the enlarged schematic diagram of the connection structure of the upper crossbeam and the steel plate of the present invention;

[0052] Figure 8 It is the stress nephogram before reinforcement of the present invention;

[0053] Figure 9 It is the displacement nephogram before reinforcement of the present invention;

[0054] Figure 10 It is the stress nephogram after reinforcement of the present invention;

[0055] Figure 11 It is the displacement nephogram after reinforcement of the present invention;

[0056] Figure 12 It is the force diagram of the crossbeam equipped with the signboard of the present invention.

[0057] Wherein: 1. Sign panel; 11. First framework; 12. Second framework; 121. Connecting framework; 122. Hoop; 2. Upper crossbeam; 21. First connecting rod; 22. First diagonal rod; 3. Lower crossbeam; 31. Second connecting rod; 32. Second diagonal rod; 4. Bracing rod; 41. U-shaped connecting rod; 42. Third connecting rod; 43. Third diagonal rod; 5. Steel plate; 51. U-bolt. Detailed implementation mode

[0058] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can be obtained from commercial channels unless otherwise specified.

[0059] Embodiment 1:

[0060] Please refer to Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 As shown in

[0061]

[0062] a reinforcement device for local structural defects of a highway gantry sign, including a sign panel 1, an upper crossbeam 2, a lower crossbeam 3 and a bracing rod 4. A second framework 12 arranged horizontally is fixedly connected to the sign panel 1, and a first framework 11 arranged vertically is fixedly connected to the second framework 12. There are two bracing rods 4, and the upper crossbeam 2 and the lower crossbeam 3 are both fixedly arranged between the bracing rods 4; The outer peripheries of the upper crossbeam 2 and the lower crossbeam 3 are fixedly connected to the first framework 11. First connecting rods 21 are fixedly connected between the upper crossbeams 2 and between the lower crossbeams 3. A diagonal bracing mechanism is slidably arranged between the first connecting rods 21. The diagonal bracing mechanism includes a first diagonal rod 22, a steel plate 5 with an L-shaped structure and a U-bolt 51. The steel plate 5 is fixedly connected to both ends of the first diagonal rod 22. The steel plate 5 is fixedly connected between the first connecting rods 21 through the U-bolt 51, and the first diagonal rod 22 is in an inclined state.In this case, due to the setting of the diagonal bracing mechanism, the top of the original highway gantry sign support between the upper crossbeam 2 and the lower crossbeam 3 does not have a diagonal bracing reinforcement method, resulting in poor stability of its support. Among them, the material of the sign panel 1 is aluminum alloy, and the material properties are: elastic modulus: 69 GPa; Poisson's ratio: 0.33; density: 2.81 g / cm2; yield strength: 150 - 285 Mpa; the strength is relatively good and it can bear a strong force. Calculated at a wind speed of 28 m / s, the data calculated before reinforcement is as Figure 8 and Figure 9 shown. It can be seen from the stress nephogram and displacement nephogram that the maximum stress on the sign panel 1 is 473 MPa, seriously exceeding the strength limit of the material, and the maximum displacement is 2240 mm, with a large value, seriously exceeding the strength that the sign panel 1 can bear, not meeting the requirements of the existing technology, affecting the strength of the sign panel 1, and there will be a situation of falling, seriously affecting traffic. After reinforcement, calculated at a wind speed of 28 m / s, the data calculated is as Figure 10 and Figure 11 shown. It can be seen from the stress nephogram and displacement nephogram that the maximum stress of the reinforced sign panel 1 is 190 MPa, slightly exceeding the strength limit of the original material compared with 473 MPa, and the maximum displacement is 243 mm, with a reasonable value. Among them, the maximum stress is reduced by 59.8% compared with the original, and the maximum displacement is reduced by 89% compared with the original. The transformation effect is very significant, significantly increasing the strength of the sign panel 1;

[0063] Among them, only by sliding the steel plate 5 between the first connecting rods 21, then using the U-bolt 51 to fix the steel plate 5 on the first connecting rod 21, and using the U-bolt 51 to fix the steel plate 5 on the upper crossbeam 2 and the lower crossbeam 3. After completion of the fixation, the U-bolt 51 is welded on the steel plate 5 to avoid directly adopting the welding method for the added reinforcement method to prevent damage to the galvanized layer of the reinforcement structure and affect the normal use of the sign panel 1. Among them, it is convenient to operate, can quickly complete the reinforcement operation, and only needs to occupy two lanes to complete the reinforcement during reinforcement, without the need to fully block the road section, and there is space for vehicles to travel, facilitating traffic.

[0064] As a further implementation method of this embodiment, as Figure 5 、 Figure 6 、 Figure 7 shown, the steel plate 5 is slidably arranged between the first connecting rods 21, the U-bolt 51 is arranged at the corresponding position of the steel plate 5 for the first connecting rod 21, the U-bolt 51 is fixedly sleeved around the first connecting rod 21, the U-bolt 51 is arranged at the corresponding position of the steel plate 5 for the upper crossbeam 2 and the lower crossbeam 3, and the U-bolt 51 is fixedly sleeved around the upper crossbeam 2 and the lower crossbeam 3.

[0065] By using the U-bolt 51, it is convenient to fix the first diagonal rod 22 between the first connecting rods 21, increasing the stability of the reinforcement solution.

[0066] As a further implementation manner of this embodiment, as Figure 5 shown, both ends of the upper cross beam 2 and the lower cross beam 3 are fixedly connected with U-shaped connecting rods 41 through fixing nuts, and the U-shaped connecting rods 41 are fixedly connected with the struts 4.

[0067] As a further implementation manner of this embodiment, as Figure 3 shown, a horizontally disposed third connecting rod 42 is fixedly connected between the struts 4, and an inclined third diagonal rod 43 is fixedly connected between the third connecting rods 42.

[0068] By installing the U-shaped connecting rod 41 using a fixing nut and then welding the fixing nut, the galvanized layer of the steel frame is prevented from being damaged, effectively increasing the strength. Among them, by using the fixing nut method for fixing, it is convenient to extend the lengths of the upper cross beam 2 and the lower cross beam 3 in the later stage, which is applicable to expressways of different widths and increases the applicable range.

[0069] As a further implementation manner of this embodiment, as Figure 4 shown, a horizontally disposed second connecting rod 31 is fixedly connected between the upper cross beam 2 and the lower cross beam 3, and an inclined second diagonal rod 32 is fixedly connected between the second connecting rods 31.

[0070] As a further implementation manner of this embodiment, as Figure 2 shown, a connecting skeleton 121 is arranged between the first skeletons 11, and a hoop 122 is fixedly arranged on the connecting skeleton 121. The hoop 122 is fixedly connected to the first skeleton 11 through a limit bolt.

[0071] As a further implementation manner of this embodiment, as Figure 2 shown, both ends of the connecting skeleton 121 are fixedly connected to the second skeleton 12.

[0072] Embodiment 2:

[0073] A reinforcement method for a local structure defect reinforcement device of a highway gantry sign includes the following steps:

[0074] S1: Panel reinforcement: Horizontally fix the second skeleton 12 to the back of the sign panel 1, and then longitudinally fix the first skeleton 11 to the first skeleton 11. The fixing method is welding;

[0075] Use the hoop 122 to fixedly connect the connecting skeleton 121 between the first skeletons 11, and then weld the hoop 122 to the first skeleton 11 to complete the reinforcement of the sign panel 1;

[0076] S2: Bottom support reinforcement: Horizontally and fixedly connect the third connecting rod 42 between the struts 4, and then fixedly connect the third diagonal rod 43 between the third connecting rods 42 in an inclined state. The fixing method is welding to complete the reinforcement of the bottom struts;

[0077] S3: New reinforcement: Horizontally and fixedly connect the first connecting rod 21 between the upper cross beam 2 and the lower cross beam 3, and then fixedly connect the first diagonal rod 22 between the steel plates 5 in an inclined state. Then, slidably insert the steel plates 5 between the first connecting rods 21, and use U-shaped bolts 51 to fixedly connect the steel plates 5 to the first connecting rods 21, and use U-shaped bolts 51 to fixedly connect the steel plates 5 to the upper cross beam 2 and the lower cross beam 3. Then, weld the steel plates 5 and the U-shaped bolts 51 to effectively reinforce the upper cross beam 2 and the lower cross beam 3 and increase the wind resistance performance;

[0078] S4: Cross beam reinforcement: Fix the second connecting rod 31 between the upper cross beam 2 and the lower cross beam 3, and then fixedly connect the second diagonal rod 32 between the second connecting rods 31 in an inclined state. Then, fixedly connect the U-shaped connecting rod 41 to both ends of the upper cross beam 2 and the lower cross beam 3 through fixing nuts; The fixing method is welding;

[0079] S5: Assembly: Place the sign panel 1 at the upper cross beam 2 and the lower cross beam �, and then fix it to the upper cross beam 2 and the lower cross beam 3 using a hoop 122. Then, fixedly connect the U-shaped connecting rod 41 to the top of the strut 4. The fixing method is welding.

[0080] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0081] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Reinforcement method for a local structure defect reinforcement device of a highway gantry sign, the reinforcement device comprising a sign panel (1), an upper cross beam (2), a lower cross beam (3), and a strut (4), characterized in that, A second skeleton (12) arranged horizontally is fixedly connected to the sign panel (1), a first skeleton (11) arranged vertically is fixedly connected to the second skeleton (12), there are two struts (4), an upper cross beam (2) and a lower cross beam (3) are both fixedly arranged between the struts (4), the peripheries of the upper cross beam (2) and the lower cross beam (3) are fixedly connected to the first skeleton (11), a first connecting rod (21) is fixedly connected between the upper cross beams (2) and between the lower cross beams (3), a diagonal bracing mechanism is slidably arranged between the first connecting rods (21), the diagonal bracing mechanism includes a first diagonal rod (22), a steel plate (5) with an L-shaped structure and a U-bolt (51), the steel plate (5) is fixedly connected to both ends of the first diagonal rod (22), the steel plate (5) is fixedly connected between the first connecting rods (21) through the U-bolt (51), and the first diagonal rod (22) is in an inclined state, and it is characterized in that: The reinforcement method includes the following steps: S1: Panel reinforcement: Horizontally and fixedly connect the second skeleton (12) to the back of the sign panel (1), and then vertically and fixedly connect the first skeleton (11) to the first skeleton (11), and the fixing method is welding; Use a hoop (122) to fixedly connect the connecting skeleton (121) between the first skeletons (11), and then weld the hoop (122) to the first skeleton (11) to complete the reinforcement of the sign panel (1); S2: Bottom support reinforcement: Horizontally and fixedly connect the third connecting rod (42) between the struts (4), and then fixedly connect the third diagonal rod (43) in an inclined state between the third connecting rods (42), and the fixing method is welding to complete the reinforcement of the bottom struts (4); S3: New reinforcement: Horizontally and fixedly connect the first connecting rod (21) between the upper cross beams (2) and between the lower cross beams (3), then fixedly connect the first diagonal rod (22) in an inclined state between the steel plates (5), then slidably insert the steel plates (5) between the first connecting rods (21), then use the U-bolt (51) to fixedly connect the steel plates (5) to the first connecting rods (21), and use the U-bolt (51) to fixedly connect the steel plates (5) to the upper cross beam (2) and the lower cross beam (3), and then weld the steel plates (5) and the U-bolt (51) to reinforce the upper cross beam (2) and the lower cross beam (3) and increase the wind resistance performance; S4: Cross beam reinforcement: Fix the second connecting rod (31) between the upper cross beam (2) and the lower cross beam (3), then fixedly connect the second diagonal rod (32) in an inclined state between the second connecting rods (31), and then fixedly connect the U-shaped connecting rod (41) to both ends of the upper cross beam (2) and the lower cross beam (3) through a fixing nut; the fixing method is welding; S5: Assembly: Place the sign panel (1) at the upper cross beam (2) and the lower cross beam (3), then use a hoop (122) to fix it on the upper cross beam (2) and the lower cross beam (3), and then fixedly connect the U-shaped connecting rod (41) to the top of the strut (4), and the fixing method is welding.

2. The reinforcement method of the reinforcement device for local structural defects of highway gantry signs according to claim 1, characterized in that: The steel plate (5) is slidably arranged between the first connecting rods (21). The U-bolts (51) are arranged on the steel plate (5) corresponding to the positions of the first connecting rods (21). The U-bolts (51) are fixedly sleeved around the first connecting rods (21). The U-bolts (51) are arranged on the steel plate (5) corresponding to the upper cross beam (2) and the lower cross beam (3). The U-bolts (51) are fixedly sleeved around the upper cross beam (2) and the lower cross beam (3).

3. The reinforcement method of the reinforcement device for local structural defects of highway gantry signs according to claim 1, characterized in that: Both ends of the upper cross beam (2) and the lower cross beam (3) are fixedly connected with U-shaped connecting rods (41) through fixing nuts. The U-shaped connecting rods (41) are fixedly connected with the struts (4).

4. The reinforcement method of the reinforcement device for local structural defects of highway gantry signs according to claim 1, characterized in that: A horizontal third connecting rod (42) is fixedly connected between the struts (4). Inclined third diagonal rods (43) are fixedly connected between the third connecting rods (42).

5. The reinforcement method of the reinforcement device for local structural defects of highway gantry signs according to claim 1, characterized in that: A horizontal second connecting rod (31) is fixedly connected between the upper cross beam (2) and the lower cross beam (3). Inclined second diagonal rods (32) are fixedly connected between the second connecting rods (31).

6. The reinforcement method of the reinforcement device for local structural defects of highway gantry signs according to claim 1, characterized in that: A connecting skeleton (121) is arranged between the first skeletons (11). A hoop (122) is fixedly arranged on the connecting skeleton (121). The hoop (122) is fixedly connected to the first skeleton (11) through a limit bolt.

7. The reinforcement method of the reinforcement device for local structural defects of highway gantry signs according to claim 6, characterized in that: Both ends of the connecting skeleton (121) are fixedly connected to the second skeleton (12).

Images