Transition section guardrail and guardrail

Abstract

The utility model discloses a transition section guard bar and guard bar, the transition section guard bar is used for being installed between a sound barrier integrated guard bar and an anti-collision guard bar, the sound barrier integrated guard bar comprises a sound absorption part, the transition section guard bar comprises a first stand column, a connecting part and a first beam, and the first stand column is installed on the ground. The first beam is connected with the side wall of the first stand column, one end of the first beam is used for being connected with a sound barrier integrated guardrail, and the other end of the first beam is used for being connected with an anti-collision guardrail. The connecting part is used for being located between the sound absorbing part and the ground, one end is used for being connected with the sound absorbing part, and the other end is used for being connected with the ground. By adopting the transition section guardrail provided by the utility model, the connection reliability between the sound barrier integrated guardrail and the anti-collision guardrail can be effectively improved, and the overall strength of the guardrail can meet the strength requirement.

Description

Technical Field

[0001] This utility model relates to the field of road construction facilities technology, and in particular to a transition section guardrail and guardrail. Background Technology

[0002] Guardrails are required on both sides of highways to prevent vehicles from running off the road due to loss of control and to reduce traffic accidents. When installing guardrails, additional sound barriers are needed to reduce noise when the highway passes through residential areas. Current technology allows sound barriers to be placed on the outside of the guardrails to meet noise reduction requirements; however, this necessitates increasing the lateral width of the highway, thus increasing construction costs.

[0003] Therefore, when a highway passes through both residential and non-residential areas, integrated sound barriers can be installed in the residential areas, while ordinary crash barriers can be installed in the non-residential areas. However, how to improve the connection reliability between the integrated sound barriers and ordinary crash barriers so that the overall strength of the barriers meets the strength requirements has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] This utility model provides a transition section guardrail and guardrail, which is used to improve the connection reliability between the integrated sound barrier guardrail and the ordinary crash barrier when the highway passes through both residential and non-residential areas, and to ensure that the overall strength of the guardrail meets the strength requirements.

[0005] Firstly, this utility model provides a transition section guardrail for installation between an integrated sound barrier guardrail and a crash barrier. The integrated sound barrier guardrail includes a sound-absorbing part, and the transition section guardrail includes a first post, a connecting part, and a first beam. The first post is installed on the ground; the first beam is connected to the side wall of the first post, with one end for connecting to the integrated sound barrier guardrail and the other end for connecting to the crash barrier. The connecting part is located between the sound-absorbing part and the ground, with one end for connecting to the sound-absorbing part and the other end for connecting to the ground.

[0006] The transition section guardrail provided by this utility model includes a connecting part, which is used to connect the sound-absorbing part of the integrated sound barrier guardrail to the ground. At the same time, the first beam of the transition section guardrail is installed on the first post, and the first beam is used to connect the integrated sound barrier guardrail and the crash barrier guardrail. This effectively improves the connection reliability between the integrated sound barrier guardrail and the crash barrier guardrail, and ensures that the overall strength of the guardrail meets the strength requirements.

[0007] In one possible implementation of this invention, along the axial direction of the first column, the end of the connecting portion used to connect with the sound-absorbing portion is positioned away from the ground relative to the first beam. This is to further improve the installation stability of the sound-absorbing portion.

[0008] In one possible implementation of this utility model, the transition section guardrail further includes a reinforcing portion, part of which is embedded below ground level. The other end of the connecting portion is used to connect to the reinforcing portion, thereby improving the reliability of the connection between the connecting portion and the ground.

[0009] In one possible implementation of this utility model, the transition section guardrail further includes a connecting structure, which is arranged along the direction of gravity and at least partially embedded in the reinforcing portion. The other end of the connecting portion is used to connect with the connecting structure to further improve the reliability of the connection between the connecting portion and the ground.

[0010] In one possible implementation of this invention, the embedment depth of the connection structure is A, and A satisfies: 450mm ≤ A ≤ 500mm. This reduces the material cost of the connection structure while meeting its anti-insertion and extraction requirements.

[0011] In one possible implementation of this invention, the first column is arranged along the direction of gravity and inserted into the reinforcing part. This serves to achieve a fixed connection between the first column and the reinforcing part, which helps to improve the reliability of the connection between the first column and the ground.

[0012] In one possible implementation of this invention, the reinforcing part includes a sleeve, which is arranged along the direction of gravity. A portion of the first column is inserted into the sleeve. This improves the ease and accuracy of installing the first column.

[0013] In one possible implementation of this invention, the connecting portion includes a first bent portion and a second bent portion connected together. The first bent portion is located on the side of the first beam facing away from the ground and is used to connect with the sound-absorbing portion, while the second bent portion is used to connect with the ground. This effectively improves the installation stability of the sound-absorbing portion.

[0014] In one possible implementation of this utility model, the included angle between the first bend and the second bend is α, and α satisfies: 135°≤α<180°. This satisfies the connection requirement between the second bend and the integrated sound barrier guardrail via the first bend, while achieving a smooth connection between the second bend and the first bend, thereby further improving the overall strength of the guardrail and reducing construction costs.

[0015] Secondly, this utility model provides a guardrail, including an integrated sound barrier guardrail and a crash barrier, as well as the transition section guardrail described in the first aspect. The integrated sound barrier guardrail further includes a second post and a second beam, and the sound-absorbing part includes a third beam and a sound-absorbing panel. The second post is installed on the ground, and the sound-absorbing panel is connected to the side wall of the second post. Along the axial direction of the second post, the second beam and the third beam are spaced apart, and the second beam and the third beam are installed on the side of the second post facing away from the sound-absorbing panel; the second beam is used to connect to the first beam. The third beam is opposite to the second beam and faces away from the ground, and is used to connect to the connecting part.

[0016] The guardrail provided by this utility model has the advantage of improving the connection reliability between the integrated sound barrier guardrail and ordinary crash barriers, as the connecting part is used to connect the sound-absorbing part of the integrated sound barrier guardrail to the ground, and the first beam of the transition section guardrail is used to connect the integrated sound barrier guardrail and the crash barrier. It also effectively reduces the overall construction cost of the guardrail while ensuring that the overall strength of the guardrail meets the strength requirements.

[0017] In addition, by connecting the connecting part to the third beam of the integrated sound barrier guardrail, the sharp corners at the ends of the third beam can be avoided, thereby effectively improving the overall safety factor of the guardrail. Attached Figure Description

[0018] Figure 1 A structural schematic diagram of the guardrail provided by this utility model;

[0019] Figure 2 for Figure 1 A close-up view of section A of the provided guardrail;

[0020] Figure 3 for Figure 1 A top view of the provided guardrail;

[0021] Figure 4 for Figure 1 A magnified view of section B of the provided guardrail.

[0022] Reference numerals: 1-Bumper guardrail; 11-Post; 12-Wave beam; 2-Transition guardrail; 21-First post; 22-Connecting part; 221-First bend; 222-Second bend; 23-First beam; 24-Reinforcing part; 241-Sleeve; 25-Connecting structure; 3-Integrated sound barrier guardrail; 31-Sound absorbing part; 311-Sound absorbing panel; 312-Third beam; 32-Second post; 33-Second beam. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this utility model are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the protection scope of this utility model. The accompanying drawings of the embodiments of this utility model are only for illustrating relative positional relationships and do not represent actual proportions.

[0024] It should be noted that specific details are set forth in the following description to facilitate understanding of this utility model. However, this utility model can be implemented in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] Guardrails are required on both sides of highways to prevent vehicles from running off the road due to loss of control and to reduce traffic accidents. When installing guardrails, additional sound barriers are needed to reduce noise when the highway passes through residential areas. Current technology allows sound barriers to be placed on the outside of the guardrails to meet noise reduction requirements; however, this necessitates increasing the lateral width of the highway, thus increasing construction costs.

[0026] Currently, when installing guardrails on roadbed sections, only corrugated beam guardrails are needed for sections where the highway passes through non-residential areas. However, for sections where the highway passes through residential areas, sound barriers are required. This necessitates installing additional sound barriers on the outside of the existing corrugated beam guardrails, increasing construction costs.

[0027] In view of this, the transition section guardrail and guardrail provided by this utility model, by setting up integrated sound barrier guardrails in road sections where sound barriers are required, and setting up corrugated beam guardrails in roadbed guardrails in road sections where sound barriers are not required, and by setting up transition section guardrails between the corrugated beam guardrails and the integrated sound barrier guardrails, improves the connection reliability between the two, thereby ensuring that the overall strength of the guardrail meets the strength requirements while reducing the construction cost of the guardrail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0028] refer to Figure 1 , Figure 1This is a schematic diagram of a guardrail structure provided by this utility model. The guardrail includes a crash barrier 1, a transition section guardrail 2, and an integrated sound barrier guardrail 3. The crash barrier 1 can be, for example, a corrugated beam guardrail, including multiple posts 11 and corrugated beams 12. The multiple posts 11 are spaced apart along the road's extension direction and can be directly fixed to the ground or fixedly connected to the ground through other connecting structures 25. The corrugated beams 12 are connected to the side walls of the multiple posts 11 to simplify the structure of the crash barrier 1 while meeting its strength requirements. The transition section guardrail 2 is installed between the integrated sound barrier guardrail 3 and the crash barrier 1.

[0029] It should be noted that the corrugated beam 12 can be a single integral structure or a multi-segment structure arranged along its length. When the corrugated beam 12 is a multi-segment structure, it can be installed between two adjacent columns 11, with the adjacent corrugated beam segments 12 overlapping each other, which helps to further improve the strength of the crash barrier 1.

[0030] When specifically setting up the transition section guardrail 2, please refer to... Figure 1 The transition section guardrail 2 includes a first post 21, a connecting part 22, and a first beam 23. The first post 21 is installed on the ground. It can be understood that the first post 21 can be directly fixed to the ground or fixed to the ground through other structural components. The first beam 23 is connected to the side wall of the first post 21, and one end of the first beam 23 is used to connect to the integrated sound barrier guardrail 3, and the other end is used to connect to the crash barrier 1.

[0031] When setting the first beam 23, the first beam 23 can be, for example, a corrugated beam, to meet the strength requirements of the first beam 23 while simplifying the structure. In addition, one end of the first beam 23 overlaps with the corrugated beam of the crash barrier 1, and the two are fixed to the post by fasteners, which can effectively simplify the connection structure between the transition section guardrail 2 and the crash barrier 1.

[0032] When specifically setting up the integrated sound barrier guardrail 3, the integrated sound barrier guardrail 3 includes a sound-absorbing part 31, which is used to form a sound barrier. This allows the integrated sound barrier guardrail 3 to not only resist the impact of out-of-control vehicles, but also reduce noise transmission.

[0033] It should be noted that the guardrail provided by this utility model does not limit the specific structure of the sound-absorbing part 31. For example, the sound-absorbing part 31 may include multiple sound-absorbing panels 311 spliced ​​together. It should be noted that the multiple sound-absorbing panels 311 are spliced ​​together along the extension direction of the road, and the splicing length can be adjusted according to actual needs.

[0034] Furthermore, the connecting part 22 is located between the sound-absorbing part 31 and the ground, with one end of the connecting part 22 used to connect to the sound-absorbing part 31 and the other end used to connect to the ground. It is worth mentioning that along the axial direction of the first column 21 (e.g., Figure 1 (As shown in the Z-axis direction), the end of the connecting part 22 that connects to the sound-absorbing part 31 is positioned away from the ground relative to the first beam 23. That is, the height of the end of the connecting part 22 connected to the sound-absorbing part 31 from the ground is greater than the height of the first beam 23 from the ground. It should be noted that since the height of the sound barrier (sound-absorbing part 31) on the highway is greater than the height of the first beam 23 from the ground, the above-described arrangement helps to improve the stability of the sound-absorbing part 31.

[0035] It should be noted that this utility model does not limit the specific structure of the connecting part 22. In one optional embodiment, such as Figure 2 As shown, Figure 2 For display Figure 1 A partial enlarged view at point A shows that the connecting part 22 includes a first bent part 221 and a second bent part 222 connected together. The first bent part 221 is located on the side of the first beam 23 facing away from the ground and is used to connect with the sound-absorbing part 31 of the integrated sound barrier guardrail 3, while the second bent part 222 is used to connect with the ground. Additionally, as shown... Figure 1 As shown, since the height of the sound-absorbing part 31 needs to be greater than the height of the first beam 23 from the ground, by making the height of the first bending part 221 from the ground greater than the height of the first beam 23 from the ground, and by connecting the first bending part 221 to the sound-absorbing part 31, and by connecting the first bending part 221 to the ground through the second bending part 222, the installation stability of the sound-absorbing part 31 can be effectively improved.

[0036] It is worth mentioning that, in the above embodiment, since the first bending portion 221 is located on the side of the first beam 23 away from the ground, and the first bending portion 221 is connected to the second bending portion 222 and the sound-absorbing portion 31 of the integrated sound barrier guardrail 3, while the second bending portion 222 is connected to the ground, an angle α can be set between the first bending portion 221 and the second bending portion 222, and α exemplarily satisfies: 135°≤α<180°. This satisfies the connection requirement between the second bending portion 222 and the integrated sound barrier guardrail 3 via the first bending portion 221, while achieving a smooth connection between the second bending portion 222 and the first bending portion 221, thereby further improving the overall strength of the guardrail and reducing construction costs.

[0037] It should be noted that the connecting part 22 can be, for example, a bent integral steel structure with a cross-section that can be square, rectangular, or C-shaped. Its material can be carbon steel, cast iron, cast aluminum, aluminum alloy, stainless steel, etc.

[0038] The guardrail provided by this utility model has the advantage of improving the connection reliability between the integrated sound barrier guardrail 3 and the ordinary crash barrier 1. Since the connecting part 22 is used to connect the sound-absorbing part 31 of the integrated sound barrier guardrail 3 to the ground, and the first beam 23 of the transition section guardrail 2 is used to connect the integrated sound barrier guardrail 3 and the crash barrier 1, it can effectively reduce the overall construction cost of the guardrail while ensuring that the overall strength of the guardrail meets the strength requirements.

[0039] In one alternative implementation, such as Figure 1 As shown, the integrated sound barrier 3 may further include a second post 32 and a second beam 33, and the sound-absorbing part 31 may further include a third beam 312. The second post 32 is installed on the ground, and the sound-absorbing panel 311 is connected to the side wall of the second post 32. For example, as... Figure 3 As shown, Figure 3 For display Figure 1 In the top view, the surface of the sound-absorbing panel 311 can be set tangent to the side wall of the second column 32, and the two can be fixed together by bolts or other fasteners. Furthermore, the second beam 33 and the third beam 312 are both located on the side of the sound-absorbing panel 311 away from the second column 32, and simultaneously along the axial direction of the second column 32 (e.g., ...). Figure 1 (As shown in the Z-axis direction), the second beam 33 and the third beam 312 are spaced apart, and the second beam 33 is used to connect with the first beam 23 of the transition section guardrail 2.

[0040] It should be noted that the guardrail provided by this utility model does not limit the specific structure of the second beam 33. The structure of the second beam 33 can refer to the corrugated beam structure of the anti-collision guardrail 1, which will not be described in detail here.

[0041] The third beam 312 of the integrated sound barrier guardrail 3 is positioned away from the ground relative to the second beam 33, and is used to connect with the connecting part 22. When setting the third beam 312, it can be, for example, a straight steel structure beam with a square, rectangular, or C-shaped cross-section. Its material can be carbon steel, cast iron, cast aluminum, aluminum alloy, stainless steel, etc.

[0042] In addition, due to the overall height of the sound-absorbing part 31 (along as follows) Figure 1 The distance from the top edge of the sound-absorbing panel 311 to the ground in the Z-axis direction shown is greater than the height of the third beam 312 (as shown). Figure 1 (As shown in the Z-axis direction, the distance of the third beam 312 from the ground). Therefore, the length of the third beam 312 along the road extension direction can be greater than or equal to the length of the sound-absorbing part 31 along the road extension direction, so that the third beam 312 can strengthen the sound barrier formed by the sound-absorbing part 31.

[0043] The integrated sound barrier railing provided by this utility model, since the sound-absorbing panel 311 and the second beam 33 are both installed on the column, integrates the sound-absorbing panel 311 (sound barrier), the second beam 33 (anti-collision beam) and the column into one unit, which helps to reduce the space occupied by the railing and at the same time reduce the construction cost of the railing.

[0044] In one alternative implementation, such as Figure 1 As shown, the transition section guardrail 2 also includes a reinforcing part 24, part of which is embedded below ground level. It should be noted that this invention does not limit the specific structure of the reinforcing part 24; for example, the reinforcing part 24 can be cast from concrete. During the installation of the guardrail, for example, a groove needs to be dug at the location of the earthen roadbed where the transition section guardrail 2 is located, and the end of the connecting part 22 is inserted into the groove. Then, concrete is poured into the groove. After the concrete has cured, the end of the connecting part 22 will be embedded in the reinforcing part 24, thereby achieving a fixed connection between the connecting part 22, the concrete, and the ground, and effectively improving the reliability of the connection between the connecting part 22 and the ground.

[0045] Alternatively, the connection between the connecting part 22 and the aforementioned concrete can also be achieved through other structural components, for example, such as... Figure 2 As shown, the transition section guardrail 2 also includes a connecting structure 25, which is arranged along the direction of gravity, and at least a portion of the connecting structure 25 is embedded in the reinforcing portion 24. In one possible implementation, the connecting structure 25 can be, for example, a steel column, with its axis arranged along the direction of gravity, and the connecting portion 22 is used to connect to the connecting structure 25. Specifically, both the second bend 222 of the connecting portion 22 and the connecting structure 25 can be steel structures with a rectangular cross-section, and the second bend 222 can be connected to the portion of the connecting structure 25 exposed to the reinforcing portion 24 to improve the connection strength between the connecting portion 22 and the reinforcing portion 24.

[0046] It is worth mentioning that during the installation of the guardrail, the second bend 222 and the part of the connecting structure 25 embedded in the reinforcing part 24 (i.e., the part of the connecting structure 25 located in the groove) can be overlapped first, and then the two can be fixed together with bolts. Afterwards, concrete is poured into the groove, and after the concrete has cured and solidified, as... Figure 2 As shown, the portion where the second bend 222 overlaps with the connecting structure 25 will be embedded in the reinforcing part 24, which helps to further improve the connection strength between the connecting part 22 and the reinforcing part 24. Additionally, as... Figure 2 As shown, the portion where the connecting part 22 overlaps with the connecting structure 25 has an included angle, and along the positive direction of the Z-axis, this included angle is an acute angle, so as to improve the connection strength between the connecting part 22 and the reinforcing part 24 while reducing the construction difficulty and construction cost.

[0047] The depth at which the connecting structure 25 is embedded in the reinforcing part 24 is A, and this depth can be set according to actual needs. For example, A satisfies: 450mm≤A≤500mm. This is to reduce the material cost of the connecting structure 25 while meeting its anti-insertion and extraction requirements.

[0048] It is understandable that when the connecting structure 25 is completely embedded inside the reinforcing part 24, such as Figure 2 As shown, dimension A can be the height of the connecting structure 25. This ensures that during the installation of the guardrail, the connection point between the connecting part 22 and the connecting structure 25 is completely surrounded by concrete, which further improves the reliability of the connection between them. Additionally, it effectively reduces the height of the connecting structure 25, thereby further reducing its material cost.

[0049] It should be noted that the dimensions of the reinforcing part 24 can be set according to actual needs. For example, the height can be 700mm-750mm; the width can be 700mm-750mm; and its length is set along the extension direction of the road. The specific dimensions can be set according to the distance between the integrated sound barrier guardrail 3 and the crash barrier 1, as well as the strength requirements.

[0050] like Figure 4 As shown, Figure 4 For display Figure 1 In a partial enlarged view at point B, in one alternative embodiment, the first column 21 is arranged along the direction of gravity and is inserted into the reinforcing part 24 to achieve a fixed connection between the first column 21 and the reinforcing part 24, which is beneficial to improving the reliability of the connection between the first column 21 and the ground.

[0051] In a specific embodiment where the first column 21 is fixedly connected to the reinforcing part 24, the reinforcing part 24 may include a sleeve 241 arranged along the direction of gravity, and a portion of the first column 21 is inserted into the sleeve 241. This improves the ease of installation and installation accuracy of the first column 21.

[0052] It is worth mentioning that the sleeve 241 includes an inner sleeve and an outer sleeve that are nested together, and there is a gap between the inner sleeve and the outer sleeve. This gap is used to fill reinforcing material to improve the strength of the sleeve 241.

[0053] In addition, such as Figure 1As shown, the first post 21 of the transition section guardrail 2 and the second post 32 of the integrated sound barrier guardrail 3 are spaced apart. The connecting structure 25 of the transition section guardrail 2 is located between the first post 21 and the second post 32. This avoids the connecting part 22 of the transition section guardrail 2 crossing the first post 21 when connecting to the connecting structure 25, thus effectively improving the ease of connection between the connecting part 22 and the connecting structure 25. In addition, it can also shorten the length of the connecting part 22 as much as possible while meeting the connection strength requirements between the connecting part 22 and the connecting structure 25, thereby effectively reducing the construction difficulty and cost of the guardrail.

[0054] In summary, the transition section guardrail 2 provided by this utility model includes a connecting part 22, which is used to connect the sound-absorbing part 31 of the integrated sound barrier guardrail 3 to the ground. At the same time, the first beam 23 of the transition section guardrail 2 is installed on the first column 21, and the first beam 23 is used to connect the integrated sound barrier guardrail 3 and the crash barrier 1. This effectively improves the reliability of the connection between the integrated sound barrier guardrail 3 and the crash barrier 1, and ensures that the overall strength of the guardrail meets the strength requirements.

[0055] In addition, by connecting the connecting part 22 to the third beam 312 of the integrated sound barrier guardrail 3, the sharp corners at the ends of the third beam 312 can be avoided, thereby effectively improving the overall safety factor of the guardrail.

[0056] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A transition section guardrail for installation between an integrated sound barrier guardrail and a crash barrier, wherein the integrated sound barrier guardrail includes a sound-absorbing part, characterized in that, The transition section guardrail includes a first post, a connecting part, and a first beam, wherein: The first column is installed on the ground; the first beam is connected to the side wall of the first column, and one end is used to connect with the integrated sound barrier guardrail, and the other end is used to connect with the crash barrier guardrail. The connecting part is located between the sound-absorbing part and the ground, with one end for connecting to the sound-absorbing part and the other end for connecting to the ground.

2. The transition section guardrail according to claim 1, characterized in that, Along the axial direction of the first column, the end of the connecting portion that is connected to the sound-absorbing portion is away from the ground relative to the first beam.

3. The transition section guardrail according to claim 1, characterized in that, The transition section guardrail also includes a reinforcing section, a portion of which is buried below the ground surface; The other end of the connecting part is used to connect with the reinforcing part.

4. The transition section guardrail according to claim 3, characterized in that, The transition section guardrail also includes a connecting structure, which is arranged along the direction of gravity, and at least a portion of the connecting structure is embedded in the reinforcing part; The other end of the connecting part is used to connect with the connecting structure.

5. The transition section guardrail according to claim 4, characterized in that, The embedment depth of the connection structure is A, and A satisfies: 450mm≤A≤500mm.

6. The transition section guardrail according to claim 3, characterized in that, The first column is arranged along the direction of gravity and inserted into the reinforcing part.

7. The transition section guardrail according to claim 6, characterized in that, The reinforcing part includes a sleeve, which is arranged along the direction of gravity; a portion of the first column is inserted into the sleeve.

8. The transition section guardrail according to claim 1, characterized in that, The connecting part includes a first bent part and a second bent part connected to each other. The first bent part is located on the side of the first beam away from the ground and is used to connect with the sound-absorbing part. The second bend is used to connect with the ground.

9. The transition section guardrail according to claim 8, characterized in that, The included angle between the first bend and the second bend is α, and α satisfies: 135°≤α<180°.

10. A guardrail, characterized in that, The system includes an integrated sound barrier guardrail and a crash barrier, as well as a transition section guardrail as described in any one of claims 1 to 9, wherein: the integrated sound barrier guardrail further includes a second post and a second beam, and the sound-absorbing part includes a third beam and a sound-absorbing panel; The second column is installed on the ground, and the sound-absorbing panel is connected to the side wall of the second column; Along the axial direction of the second column, the second beam and the third beam are spaced apart, and the second beam and the third beam are installed on the side of the second column away from the sound-absorbing panel; the second beam is used to connect with the first beam; The third beam is opposite to the ground relative to the second beam and is used to connect with the connecting part.

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