A highway assembled solid base temporary guardrail and construction method

Abstract

The application discloses a highway assembled solid-base temporary guardrail and a construction method. Solid-base columns are arranged at equal intervals along the highway direction, the lower ends of the solid-base columns are inserted into column holes of a road base surface and are fixed through a plurality of anti-pulling nails respectively, the lower ends of the anti-pulling nails are fixed at the bottom of the column holes through cement paste, the upper ends are detachably connected with the solid-base columns, and the annular space between the solid-base columns and the column holes is filled with waste rock-soil materials. The heights of the upper ends of the solid-base columns extending out of the road base surface are equal, an outer cladding plate forms a closed cavity which is enclosed outside the solid-base columns and extends along the highway direction, internal cross partitions are arranged on the solid-base columns and are supported and fixed with the outer cladding plate, and the closed cavity is filled with waste rock-soil materials. The guardrail improves the protection capability and sound insulation effect of highway construction, and facilitates construction and repeated use of materials.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of highway construction protection, in particular to a highway assembled solid bottom temporary guardrail and construction method. BACKGROUND

[0002] In the expressway reconstruction and expansion project, in order to meet the road network traffic demand, the original half roadbed is usually used to maintain traffic without interruption, and the half roadbed is closed for reconstruction and expansion construction. In the reconstruction and expansion construction area, the passing vehicles need to be isolated and protected to improve the safety of the construction area due to uninterrupted traffic.

[0003] At present, the isolation of passing vehicles usually adopts water horses, mobile steel guardrails and mobile concrete guardrails and other isolation and protection facilities. These isolation and protection facilities have some technical deficiencies: (1) the connection structure with the ground is not firm, and the isolation and protection ability is poor: in order to facilitate the mobile structure, the lower end of these guardrails is placed on the road surface, or only the lower end is simply buried in the soil layer of the road surface. When the vehicle collides with the guardrail structure, the protection ability is poor; the shell of water horse and other facilities is mainly plastic material, which needs to be filled with water during use and relies on its own weight to play a role. The strength and rigidity are low, and it cannot effectively block the vehicles that run off the road; the self-weight of the mobile steel guardrail is small, and when the speed and mass of the vehicle running off the road are large, it cannot effectively protect the vehicle; (2) poor tire noise isolation: the existing guardrails have poor tire noise absorption effect and low isolation ability due to the discontinuity and low thickness of the structure; (3) high material consumption and low recycling rate: the concrete guardrail usually adopts steel assembly or concrete cast-in-place. In order to improve the protection ability, the material consumption and the increase of structure size will be far more than ordinary guardrails; after construction is completed, the structure is damaged and cannot be used again, and can only be discarded, causing material waste and poor environmental protection effect. SUMMARY

[0004] Based on this, the present application provides a highway assembled solid bottom temporary guardrail and construction method to improve the protection ability of highway construction, tire noise isolation effect, and facilitate construction and recycling of materials.

[0005] In order to achieve the above object, in a first aspect, the present application provides a highway assembled solid base temporary guardrail, comprising solid base columns, internal transverse partitions and outer cladding plates; the solid base columns are arranged at equal intervals along the highway direction, the lower ends of the solid base columns extend into column holes in the road surface and are fixed by a plurality of anti-pull pins respectively, the lower ends of the anti-pull pins are fixed at the bottom of the column hole by cement slurry, and the upper ends are detachably connected with the solid base columns, the annular space between the solid base columns and the spiral flanges and the column hole is filled with waste rock-soil materials; the heights of the upper ends of the solid base columns extending out of the road surface are equal, the outer cladding plates form a closed cavity extending along the highway direction and enclosing the solid base columns, the internal transverse partitions are arranged on the solid base columns and are supported and fixed with the outer cladding plates, and the closed cavity is filled with waste rock-soil materials.

[0006] In some preferred technical solutions, the solid base column is a cylindrical structure and is provided with a bottom plate at the bottom, the bottom plate is uniformly distributed with arc-shaped variable cross-section holes with a large opening at the front end and a small opening at the rear end, the upper end of the anti-pull pin is clamped at the rear end of the arc-shaped variable cross-section hole, and the connection state and the disconnection state of the upper end of the anti-pull pin and the arc-shaped variable cross-section hole are converted by rotating the solid base column.

[0007] In some preferred technical solutions, the outer cladding plate comprises a bottom plate member, a top plate member, a collision face plate member and a back plate member which are embeddedly connected; the bottom plate member is horizontally arranged on the road surface, and the solid base column passes through the positioning hole of the bottom plate member; the top plate member is horizontally arranged on the top of the solid base column; the collision face plate member is arranged on the front side of the solid base column, and the lower edge of the collision face plate member is connected with the front edge of the bottom plate member, and the upper edge is connected with the front edge of the top plate member; the back plate member is arranged on the rear side of the solid base column, and the lower edge of the back plate member is connected with the rear edge of the bottom plate member, and the upper edge is fixedly connected with the rear edge of the top plate member.

[0008] In some preferred technical solutions, the internal transverse partition is fixedly sleeved on the solid base column and is arranged perpendicular to the extension direction of the outer cladding plate, and the bottom plate member, the top plate member, the collision face plate member and the back plate member are respectively embeddedly connected with the adjacent side outer edges of the internal transverse partition.

[0009] In some preferred technical solutions, the internal transverse partition and the adjacent bottom plate member, top plate member, collision face plate member and back plate member form a plurality of independent space units, and each of the independent space units is filled with waste rock-soil materials.

[0010] In some preferred technical solutions, the collision face plate member is arranged obliquely and comprises a collision face plate member A, a collision face plate member B and a collision face plate member C which are embeddedly connected from bottom to top, the bottom plate member is connected with the lower edge of the collision face plate member A, and the top plate member is connected with the upper edge of the collision face plate member C.

[0011] To achieve the above object, the second aspect of the present application provides a method for building a highway assembled solid-base temporary guardrail, comprising the following steps:

[0012] S10. Leveling the road base surface, and building column holes with fixed intervals along the direction of the road, the hole diameter being larger than the structural outer diameter of the solid-base column;

[0013] S20. Lifting the solid-base column into the column hole, and clamping the upper end of the tension pin into the arc-shaped variable cross-section hole at the bottom of the solid-base column, and extending the lower end of the tension pin into the bottom of the column hole;

[0014] S30. Injecting cement mortar through the arc-shaped variable cross-section hole at the bottom of the column to fix the lower end of the tension pin, and the cement mortar is not in contact with the solid-base column;

[0015] S40. After the cement mortar is solidified, injecting waste rock-soil material through the arc-shaped variable cross-section hole to fill the gap between the bottom of the solid-base column and the cement mortar, and injecting waste rock-soil material from the gap between the solid-base column and the column hole to fill the annular space between the spiral flange and the column hole;

[0016] S50. Constructing a longitudinal cavity with an upper opening by surrounding the solid-base column with a bottom plate, an internal transverse partition, a collision surface plate and a back plate;

[0017] S60. Filling the longitudinal cavity with waste rock-soil material through the upper opening;

[0018] S70. Fastening a top plate to the upper opening of the longitudinal cavity to form a closed structure;

[0019] S80. After use, removing the top plate, cleaning the waste rock-soil material filled in the interior of the guardrail, and sequentially removing the collision surface plate, the back plate, the internal transverse partition and the bottom plate, and finally rotating the solid-base column to disconnect the connection with the tension pin and pulling it out of the column hole.

[0020] In some preferred technical solutions, the maximum filling volume V of the cement mortar in step S30 is:

[0021] V = πR 2 h-v1

[0022] wherein R is the radius of the column hole, h is the injection height of the cement mortar, h is less than the vertical distance H between the outside of the bottom of the solid-base column and the bottom of the column hole, and v1 is the total volume of the tension pin immersed in the cement mortar.

[0023] Compared with the prior art, the technical advantages of the highway assembled solid-base temporary guardrail and the building method provided by the present application are at least shown in the following aspects:

[0024] (1) firm connection with the ground, strong isolation and protection ability: the bottom of the fixed bottom column provides vertical tension through the concrete fixed anti-tension pin, combined with the spiral flange support fixed by the waste rock-soil material, so that the fixed bottom column and the road surface form a stable connection, and the waste rock-soil material is filled in the closed cavity formed above, the weight is large, and it can resist larger impact force, has strong isolation and protection ability, and is beneficial to the safety of the construction area;

[0025] (2) good tire noise isolation and noise reduction effect: a continuous longitudinal cavity along the highway direction is formed above the road surface by the outer cladding plate, and the waste rock-soil material is filled in the longitudinal cavity, which can produce good sound insulation effect, and the outer cladding plate and the waste rock-soil material have good sound absorption and noise reduction effect, which is beneficial to the improvement of the construction environment;

[0026] (3) less material consumption and high recycling rate: the fixed bottom column and the outer cladding plate use less material, and the outer cladding plate adopts an embedded plug-in structure, which is supported and embedded by the inner transverse plate and the outer cladding plate, has high structural strength, is convenient to assemble and disassemble, and can be recycled, the waste rock-soil material is locally sourced and recovered after construction, which not only saves materials, but also has good environmental protection effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] The application will be described in further detail below with reference to the drawings and specific implementation methods. The drawings described herein are used to provide further understanding of the application, and form a part of this application. The schematic embodiments of the application and their descriptions are used to explain the application, and do not constitute an improper limitation on the application.

[0028] Figure 1 The application provides a highway assembled fixed bottom temporary guardrail plan view;

[0029] Figure 2 The application provides a structure schematic view of the 1-1 section of Figure 1

[0030] The application provides a structure schematic view of the 2-2 section of Figure 3 Figure 2 The application provides a structure schematic view of the 3-3 section of

[0031] Figure 4 Figure 2 The application provides a structure schematic view of the 4-4 section of

[0032] Figure 5 The application provides a structure schematic view of the 4-4 section of Figure 2

[0033] The application provides a structure schematic view of the 4-4 section of Figure 6

[0034] The application provides a structure schematic view of the 4-4 section of​​Figure 7 For internal cross partition large drawing;

[0035] Figure 8 For the setting diagram of the limiting bite joint A.

[0036] Figure 9 The flow chart of the embodiment of the construction method of the highway assembled solid bottom temporary guardrail provided by the application.

[0037] Explanation of the drawing mark:

[0038] 1-solid bottom column; 2-column hole; 3-tension pin; 4-house type variable cross-section hole; 5-cement mortar; 6-waste rock-soil material; 7-spiral flange; 8-bottom plate; 9-alignment hole; 10-internal cross partition; 11-limiting groove; 12-limiting steel plate; 13-collision surface plate A; 14-collision surface plate B; 15-collision surface plate C; 16-back plate; 17-limiting bite joint A; 18-limiting bite joint B; 19-10Cm waste rock-soil material; 20-3Cm waste rock-soil material; 21-top plate. DETAILED DESCRIPTION

[0039] The specific embodiments of the application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the application, and not all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the application and its application or use. Unless otherwise specified, the relative arrangement of the components and steps set forth in these embodiments does not limit the scope of the application.

[0040] As Figures 1 to 8 shown, the application provides a highway assembled solid bottom temporary guardrail, which comprises a solid bottom column 1, an internal cross partition 10 and an outer cladding plate.

[0041] The solid bottom columns 1 are arranged at equal intervals along the highway direction, the lower end of each solid bottom column 1 extends into the column hole 2 of the road base surface and is fixed by a plurality of tension pins 3 respectively, the annular space between the solid bottom column 1 and the column hole 2 is filled with waste rock-soil material 6, the lower end of the solid bottom column 1 is provided with a spiral flange 7, and the annular space between the spiral flange 7 and the column hole 2 is filled with waste rock-soil material 6.

[0042] As Figure 2 and Figure 6 shown, the lower end of the tension pin 3 is fixed at the bottom of the column hole 2 by cement mortar, and the upper end is detachably connected with the solid bottom column 1. As Figure 2 and Figure 6As shown, the solid base column 1 is a cylindrical structure and is provided with a bottom plate at the bottom, and a plurality of arc-shaped variable cross-section holes 4 are uniformly distributed around the circumference of the bottom plate, and the front end of the arc-shaped variable cross-section hole 4 is large in opening and the rear end is small in opening, the top of the tension pin 3 is smaller than the large front end opening and larger than the small rear end opening, and the connection state and the disconnection state of the upper end of the tension pin 3 and the arc-shaped variable cross-section hole 4 are converted by rotating the solid base column 1.

[0043] The height of the upper end of each solid base column 1 extending out of the road surface is equal, the outer cladding plate forms a closed cavity enclosed outside each solid base column 1 and extending along the direction of the road, and the internal transverse partition plate 10 is arranged on each solid base column 1 and is supported and fixed with the outer cladding plate, and the closed cavity is filled with waste rock-soil material 6.

[0044] The provided highway assembled solid base temporary guardrail is firm in connection with the ground, has strong isolation and protection capacity, has large weight, can resist large impact force, has strong isolation and protection capacity, is beneficial to the safety of the construction area; the outer cladding plate and the internally filled waste rock-soil material have good sound absorption and noise reduction effect, have good tire noise isolation and noise reduction effect, are beneficial to the improvement of the construction environment; and, the assembly and disassembly are convenient, can be recycled, the used waste rock-soil material is locally sourced, and is locally recovered after construction, not only saving materials, but also having good environmental protection effect.

[0045] As shown in Figure 2 and Figure 7 In some preferred embodiments, the outer cladding plate includes a bottom plate member 8, a top plate member 21, a collision face plate member, and a back plate member 16 which are embeddedly connected; the bottom plate member 8 is horizontally arranged on the road surface, and the solid base column 1 passes through the positioning hole 9 of the bottom plate member 8; the top plate member 21 is horizontally arranged at the top of the solid base column 1; the collision face plate member is arranged at the front side of the solid base column 1, and the lower edge of the collision face plate member is connected with the front edge of the bottom plate member 8 and the upper edge is connected with the front edge of the top plate member 21; and the back plate member 16 is arranged at the rear side of the solid base column 1, and the lower edge of the back plate member 16 is connected with the rear edge of the bottom plate member 8 and the upper edge is fixedly connected with the rear edge of the top plate member 21.

[0046] As shown in Figure 3 , Figure 4 and Figure 5In some preferred embodiments, the internal transverse partition plate 10 is fixedly sleeved on the solid bottom column 1 and arranged perpendicularly to the extension direction of the outer cladding plate, and the bottom plate member 8, the top plate member 21, the impact face plate member and the back plate member 16 are respectively embeddedly connected with the adjacent side outer edges of the internal transverse partition plate 10. Moreover, the internal transverse partition plate and the adjacent bottom plate member 8, top plate member 21, impact face plate member and back plate member 16 form a plurality of independent space units, and each independent space unit is respectively filled with waste rock-soil material. This structure not only increases the structural strength, but also facilitates accurate control of the filling amount outside the solid bottom column 1 in each direction during the waste rock-soil filling process, maintains the balance of the solid bottom column, and improves the reliability of the plurality of independent space units. Even if part of the space units are damaged due to external forces such as impact, the relevant damaged unit waste rock-soil material leaks, while the other units remain structurally intact, which does not affect the structural stability and continued use of other space units. Only the outer cladding plate of the damaged unit needs to be repaired, which is convenient for maintenance.

[0047] As shown in Figure 2 , in some preferred embodiments, the impact face plate member is arranged obliquely and includes impact face plate member A13, impact face plate member B14 and impact face plate member C15 embeddedly connected from bottom to top, the bottom plate member 8 is connected with the lower edge of the impact face plate member A13, and the top plate member 21 is connected with the upper edge of the impact face plate member C15. The oblique arrangement of the impact face plate member forms an internal space that is wide at the bottom and narrow at the top, increases the structural anti-toppling property and impact resistance, and improves the safety of the construction area.

[0048] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 8 , in some preferred embodiments, the inner side of the impact face plate member A13, impact face plate member B14, impact face plate member C15 and back plate member 16 is respectively provided with a limiting snap joint A, and the outer edge of the internal transverse partition plate 10 is respectively provided with a limiting snap joint B embedded with the adjacent limiting snap joint A. The lower end of the impact face plate member A13 is embedded in the limiting groove 11 on the inner side of the bottom plate member 8, and the upper end of the solid bottom column 1, the internal transverse partition plate 10, the impact face plate member C15 and the back plate member 16 is respectively embedded in the limiting groove 11 on the inner side of the top plate member 21. The buckle design of this structure improves the strength of the structure of the outer cladding plate member, the convenience of installation and disassembly.

[0049] On the basis of the above-mentioned embodiments, the present application provides a construction method of a highway assembled solid bottom temporary guardrail, as shown in Figure 9 , comprising the steps of:

[0050] S10. Leveling the road base surface, building column holes 2 with fixed intervals along the direction of the highway, and the hole diameter is greater than the structural outer diameter of the solid bottom column 1;

[0051] S20. The solid base column is erected in the column hole, the upper end of the tensile pin 3 is clamped in the arc-shaped variable cross-section hole 4 at the bottom of the solid base column 1, and the lower end extends into the bottom of the column hole 2;

[0052] S30. The cement mortar 5 is poured through the arc-shaped variable cross-section hole 4 at the bottom of the column to fix the lower end of the tensile pin, and the cement mortar 5 does not contact the solid base column 1. Specifically, the maximum filling volume V of the cement mortar 5 in step S30 is:

[0053] V = πR 2 h-v1

[0054] Wherein, R is the radius of the column hole 2, h is the pouring height of the cement mortar 5, h is less than the vertical distance H between the outside of the bottom of the solid base column 1 and the bottom of the column hole 2, and v1 is the total volume of the tensile pin 3 immersed in the cement mortar 5.

[0055] S40. After the cement mortar 5 is poured and solidified, the waste rock-soil material 6 is poured through the arc-shaped variable cross-section hole 4 to fill the gap between the bottom of the solid base column 1 and the cement mortar 5; at the same time, the waste rock-soil material 6 is poured from the gap between the solid base column 1 and the column hole 2 to fill the annulus between the spiral flange 7 and the column hole;

[0056] S50. A longitudinal cavity with an upper opening is formed by the bottom plate 8, the internal transverse partition plate 10, the impact surface plate and the back plate 16 around the solid base column 1; Specifically, it includes:

[0057] S51. Install the bottom plate 16: the alignment hole 9 of the bottom plate 8 is inserted into the solid base column 1 and supported by the ground;

[0058] S52. Install the internal transverse partition plate 10: the center hole of the internal transverse partition plate 10 is inserted into the solid base column 1, and the lower end is embedded into the limiting groove 11 on the bottom plate 8;

[0059] S53. Install the impact surface plate and the back plate 16: embed the limiting snap joints A17 on the impact surface plate A13, the impact surface plate B14, the impact surface plate C15 and the back plate 16 with the limiting snap joints B18 on the internal transverse partition plate 10, and embed the lower end of the impact surface plate A13 and the back plate 14 into the limiting groove 11 on the bottom plate 8.

[0060] In the specific implementation process, the limiting groove 11 on the top plate 21 is aligned with the top of the solid base column 1, the internal transverse partition plate 10, the impact surface plate C15 and the back plate 16, the top of the above structure is completely embedded into the limiting groove 11 on the top plate 21, and the staggered joints between the impact surface plate A13, the impact surface plate B14, the impact surface plate C15, the back plate 16, the top plate 21 and the bottom plate 8 are kept in staggered joint.

[0061] S60. Fill the longitudinal cavity with waste rock-soil material through the upper opening;

[0062] S70. Fasten the top plate 21 to the upper opening of the longitudinal cavity to form a closed structure;

[0063] S80. When the use is finished, remove the top plate 21, clean the waste rock-soil material filled in the inside of the guardrail, and then remove the impact face plate, the back plate 16, the internal cross partition 10 and the bottom plate 8 in sequence, and finally rotate the fixed-base column 1 to disconnect the connection with the tension pin 3 and pull out from the column hole 2.

[0064] The specific structure of a highway assembled fixed-base temporary guardrail often used in construction sites will be described below in combination with specific examples, as shown in Figures 1 to 8 The fixed-base column 1 of the highway assembled fixed-base temporary guardrail is arranged in the column hole 2, the upper end of the tension pin 3 is located in the annular variable cross-section hole 4, the lower end is located in the inside of the cement mortar 5, the cement mortar 5 is located in the cavity between the bottom of the column hole 2 and the outside of the bottom of the fixed-base column 1, the waste rock-soil material 6 is located in the gap between the top surface of the cement mortar 5 and the outside of the bottom of the fixed-base column 1, and the gap between the outer side of the pipe wall of the fixed-base column 1 and the inner wall of the column hole 2. The spiral flange 7 is arranged in a spiral shape on the outer side of the lower end of the pipe wall of the fixed-base column 1. The bottom plate 8 is provided with a positioning hole 9, the bottom plate 8 is sleeved into the fixed-base column 1 and placed horizontally on the road surface through the positioning hole 9, the internal cross partition 10 is sleeved into the fixed-base column 1, the lower end is embedded in the limiting groove 11 on the bottom plate 8, and the limiting engagement joint B18 on the impact face plate A13, the impact face plate B14 and the impact face plate C15 on the impact side of the guardrail is connected with the limiting engagement joint A17 on the back plate 16 on the back side of the guardrail. The lower end of the impact face plate A13 is embedded in the limiting groove 11 on the bottom plate 8. The top of the fixed-base column 1, the internal cross partition 10, the impact face plate C15 and the back plate 16 is embedded in the limiting groove 11 on the top plate 21. The 10Cm waste rock-soil material 19, the 3Cm waste rock-soil material 20 and the waste rock-soil material 6 are layered and filled in the inside space of the guardrail composed of the bottom plate 8, the internal cross partition 10, the impact face plate A13, the impact face plate B14, the impact face plate C15, the back plate 16 and the top plate 21 in sequence. The limiting grooves 11 on the top plate 21 and the bottom plate 8 are welded by the limiting steel plate 12 with a height of 3Cm.

[0065] As shown in Figure 9 , the highway assembled fixed-base temporary guardrail construction method mentioned above includes the following steps:

[0066] Firstly, the site needs to be leveled at the location where the temporary guardrail needs to be set up in the construction area, and the uneven objects such as bricks, tiles and gravel are cleaned up, and the position of the fixed base column 1 is set out at a fixed distance D, and the column hole 2 of the fixed base column 1 is constructed by using a drilling machine, and the hole depth is about 0.5-1m, and the hole diameter should be 1-2cm larger than the outer diameter of the fixed base column 1 structure;

[0067] Then, the anti-tension pin 3 is placed at the bottom of the fixed base column 1, and the anti-tension pin 3 is provided with a protruding thread, and it is placed in the column hole 2, and the bottom elevation and perpendicularity of the fixed base column 1 are ensured to meet the design requirements;

[0068] Then, the volume V of cement mortar 5 calculated by formula 1 is poured through the house type variable cross-section hole 4 at the bottom of the column, and the top surface of the cement mortar 5 is ensured not to contact the outside of the bottom surface of the fixed base column 1.

[0069] Then, after the strength of the poured cement mortar 5 reaches the design value, the sifted waste rock-soil material 6 of the excavation section of the reconstruction construction area is poured into the gap between the outside of the bottom of the fixed base column 1 and the top surface of the cement mortar 5 through the annular variable cross-section hole 4, and the particle size range should be between 0.25-0.75mm. At the same time, the sifted waste rock-soil material 6 is poured into the gap between the fixed base column 1 and the column hole 2, and the waste rock-soil material 6 can slide down to the bottom of the gap along the spiral flange 7 under the action of its own weight; After the waste rock-soil material 6 is poured, a small amount of clean water is poured into the pouring position to further compact the waste rock-soil material 6, and the waste rock-soil material 6 is supplemented and continues to be poured with clean water at the subsidence position, and this process is continued for three times to ensure that the compactness of the filled waste rock-soil material 6 meets the requirements;

[0070] Then, after the waste rock-soil material 6 is poured, the construction of the guardrail bottom plate 8 can be carried out, the fixed base column 1 is aligned with the counterbore 9 on the guardrail bottom plate 8, and it is placed on the ground, and the flatness of the guardrail bottom plate 8 is ensured to make it completely contact with the ground;

[0071] Then, the construction of the internal horizontal partition plate 10 of the guardrail is carried out, the internal horizontal partition plate 10 is sleeved on the upper end of the fixed base column 1 and the lower end is embedded into the limiting groove 11 on the bottom plate 8, and the limiting groove 11 is formed by welding 12 a limiting steel plate with a height of 3cm; The limiting engagement joint A17 on the impact face plate A13, the impact face plate B14, the impact face plate C15 and the back plate 16 is embedded and engaged with the limiting engagement joint B18 on the internal horizontal partition plate 10, and the lower end of the impact face plate A13 and the back plate 14 is embedded into the limiting groove 11 on the bottom plate 8;

[0072] Then, after the above guardrail structure is constructed, the construction of filling the inside of the guardrail with waste rock-soil material is performed, and in the construction process, the waste rock-soil material 19 with a particle size of about 10 cm is first filled layer by layer after being screened, then the waste rock-soil material 20 with a particle size of about 3 cm is filled after being filled, and finally the waste rock-soil material 6 with a particle size of about 0.25-0.75 mm is filled, and after filling is completed, a small amount of clean water is poured, and the waste rock-soil material 6 with a particle size of about 0.25-0.75 mm is filled and clean water is poured for three times until the waste rock-soil material is filled to the required density;

[0073] Finally, the construction of the top plate 21 of the guardrail is performed, the limiting groove 11 on the top plate 21 is aligned with the top of the fixed bottom column 1, the internal transverse partition plate 10, the impact surface plate C15 and the back plate 16, and the top of the above structure is completely embedded into the limiting groove 11 on the top plate 21.

[0074] Based on the highway assembled fixed bottom temporary guardrail and the construction method of the above embodiments, the fixed bottom column forms a stable connection with the road surface, has a large weight, can resist a large impact force, has a strong isolation and protection ability, and is beneficial to the safety of the construction area; the outer cladding plate and the inner filled waste rock-soil material have a good sound absorption and noise reduction effect, which is beneficial to the improvement of the construction environment; the fixed bottom column and the outer cladding plate use less materials, the outer cladding plate and the fixed bottom column are convenient to assemble and disassemble, can be recycled, and have a good environmental protection effect.

[0075] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application. The above drawings and specific embodiments are only used to illustrate the present application, and the present application is not limited thereto. Subtle changes to the present application within the spirit and scope of the present application defined by the claims of the present application fall within the protection scope of the present application.

Claims

1. A prefabricated fixed-base temporary guardrail for highways, characterized in that: It includes a solid base column (1), an internal transverse partition (10), and an outer covering plate; The fixed base columns (1) are arranged at equal intervals along the road direction. The lower end of each fixed base column (1) extends into the column hole (2) of the roadbed surface and is fixed by multiple tensile pins (3). The lower end of the tensile pins (3) is fixed to the bottom of the column hole (2) with cement grout, and the upper end is detachably connected to the fixed base column (1). The lower end of the fixed base column (1) is provided with a spiral flange (7). The annular space between the solid column (1) and the spiral flange (7) and the column hole (2) is filled with waste rock and soil material (6). The upper ends of each of the fixed base columns (1) extend to the roadbed surface at equal heights. The outer covering plate forms a closed cavity that surrounds each of the fixed base columns (1) and extends along the highway direction. The internal transverse partitions (10) are respectively installed on each of the fixed base columns (1) and supported and fixed by the outer covering plate. The closed cavity is filled with waste rock and soil material (6). The outer cladding panel includes a bottom panel (8), a top panel (21), a frontal panel, and a back panel (16) that are fitted together. The bottom plate (8) is horizontally set on the roadbed surface, and the bottom support column (1) passes through the alignment hole (9) of the bottom plate (8); The top plate (21) is horizontally positioned on top of the fixed base column (1); The impact-facing panel is arranged on the front side of the solid base column (1), with the lower edge of the impact-facing panel connected to the front edge of the bottom plate (8) and the upper edge connected to the front edge of the top plate (21). The back plate (16) is arranged on the rear side of the fixed bottom column (1), and the lower edge of the back plate (16) is connected to the rear edge of the bottom plate (8), and the upper edge is fixedly connected to the rear edge of the top plate (21). The internal diaphragm (10) is fixedly sleeved on the solid bottom column (1) and arranged perpendicular to the extension direction of the outer covering plate. The bottom plate (8), top plate (21), frontal plate and back plate (16) are respectively fitted and connected to the adjacent outer edges of the internal diaphragm (10). The internal diaphragm (10) and the adjacent bottom plate (8), top plate (21), impact plate and back plate (16) form multiple independent space units, and each of the independent space units is filled with waste rock and soil material. The impact panel is arranged diagonally and includes impact panel A (13), impact panel B (14) and impact panel C (15) that are fitted together from bottom to top. The bottom plate (8) is connected to the lower edge of impact panel A (13) and the top plate (21) is connected to the upper edge of impact panel C (15). The inner sides of the frontal panel A (13), frontal panel B (14), frontal panel C (15) and back panel (16) are respectively provided with limiting engagement joints A, and the outer edges of the inner transverse partition (10) are respectively provided with limiting engagement joints B that engage with the adjacent limiting engagement joints A.

2. The prefabricated fixed-bottom temporary guardrail for highways according to claim 1, characterized in that: The fixed base column (1) is a cylindrical structure with a base plate at the bottom. The base plate has arc-shaped variable cross-section holes (4) with a large front opening and a small rear opening evenly distributed around its circumference. The upper end of the anti-tensile pin (3) is engaged with the rear end of the arc-shaped variable cross-section hole (4). By rotating the fixed base column (1), the connection state and disconnection state of the upper end of the anti-tensile pin (3) and the arc-shaped variable cross-section hole (4) can be switched.

3. The prefabricated fixed-bottom temporary guardrail for highways according to claim 1, characterized in that: The lower end of the impact panel A (13) is fitted into the limiting groove (11) inside the bottom panel (8), and the upper ends of the solid bottom column (1), the internal transverse partition (10), the impact panel C (15) and the back panel (16) are respectively fitted into the limiting groove (11) inside the top panel (21).

4. A method for constructing a prefabricated fixed-bottom temporary guardrail for highways as described in any one of claims 1-3, characterized in that, Including the following steps: S10. Level the roadbed surface and construct column holes (2) at fixed intervals along the highway direction. The diameter of the holes is larger than the outer diameter of the structure of the solid-bottom column (1). S20. The fixed base column is placed in the column hole, and the upper end of the anti-tensile pin (3) is engaged in the arc-shaped variable cross-section hole (4) at the bottom of the fixed base column (1), and the lower end extends into the bottom of the column hole (2); S30. Cement mortar (5) is injected through the arc-shaped variable cross-section hole (4) at the bottom of the column to fix the lower end of the tensile pin. The cement mortar (5) does not contact the fixed bottom column (1). S40. After the cement mortar (5) has solidified, waste soil and rock material (6) is injected through the arc-shaped variable cross-section hole (4) to fill the gap between the bottom of the solidified column (1) and the cement mortar (5); at the same time, waste soil and rock material (6) is injected into the gap between the solidified column (1) and the column hole (2) to fill the annular space between the spiral flange (7) and the column hole. S50. A longitudinal cavity with an upper opening is constructed outside the solid base column (1) by means of a bottom plate (8), an internal diaphragm (10), a frontal plate and a back plate (16); S60. Fill the longitudinal cavity with waste soil and rock material through the upper opening; S70. The top plate (21) is fastened to the upper opening of the longitudinal cavity to form a closed structure; S80. After use, remove the top plate (21), clean out the waste rock and soil material filling the guardrail, and remove the front panel, back plate (16), internal diaphragm (10) and bottom plate (8) in sequence. Finally, rotate the bottom post (1) to disconnect it from the anti-tensile pin (3) and pull it out through the post hole (2).

5. The method for constructing prefabricated fixed-bottom temporary guardrails for highways according to claim 4, characterized in that, The maximum filling volume V of the cement mortar (5) in step S30 is: ； Where R is the radius of the column hole (2), h is the grouting height of the cement mortar (5), h is less than the vertical distance H between the outer side of the bottom of the solid column (1) and the bottom of the column hole (2), and v1 is the total volume of the tensile pin (3) immersed in the cement mortar (5).

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