Rapid horizontal type prefabricating method for UHPC anti-collision guardrail plate

Abstract

The invention relates to a rapid horizontal type prefabricating method for a UHPC anti-collision guardrail plate. The rapid horizontal type prefabricating method comprises the following steps that S1, a forming mold is manufactured according to the size requirement of the anti-collision guardrail plate; s2, preparing a UHPC material; s3, the blended UHPC material is put into a stirring machine to be stirred; s4, whether the performance of the stirring material meets the pouring requirement or not is detected; s5, the stirring material which is obtained according to the step S4 and meets the pouring requirement is distributed in a mold, and assembling is completed; s6, the mold and the UHPC material poured into the mold according to the step S5 are vibrated; s7, the mold and the prefabricated guardrail plate preliminarily formed in the mold vibrated according to the step S6 are subjected to film covering, moisturizing and curing; and S8, the mold is dismantled, hot curing or natural curing is completed on the prefabricated UHPC guardrail plate obtained through treatment in the step S7, and surface and corner treatment is paid attention to. According to the prefabricated anti-collision guardrail plate, the quality is improved, the construction procedures are reduced, the construction difficulty can be reduced, the construction period can be shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of UHPC (Ultra-High Performance Concrete) industrial buildings, and particularly relates to a rapid horizontal prefabrication method for UHPC anti-collision guardrail plates. Background Art

[0002] At present, the commonly used anti-collision guardrails in engineering are metal guardrails and concrete guardrails. Metal guardrails can withstand greater impact forces, the materials are easy to cut and weld, the manufacturing process is simple, and the cost is low; however, metal guardrails are prone to corrosion in humid or rainy environments and require frequent regular maintenance.

[0003] Concrete guardrails can make up for the shortcomings of metal guardrails, but in northern regions, especially in areas where snow melting salts are needed, their resistance to chloride salt erosion is insufficient and cannot meet the long-term use requirements. Summary of the Invention

[0004] The present invention aims to provide a rapid horizontal prefabrication method for UHPC anti-collision guardrail plates, which can significantly improve the quality of anti-collision guardrail plates, reduce construction procedures, lower construction difficulty, shorten the construction period, and improve work efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problems, the anti-collision guardrail plate and its rapid horizontal prefabrication method include the following steps:

[0006] S1. Make a mold according to the size requirements of the anti-collision guardrail plate. The mold includes a bottom mold placed horizontally, a top mold, removable side baffles, and a magnetic baffle that can move along the height direction of the guardrail plate;

[0007] S2. Configure UHPC materials;

[0008] S3. Put the prepared UHPC materials into a mixer for mixing;

[0009] S4. Detect whether the performance of the mixed materials meets the pouring requirements;

[0010] S5. Place the mixed materials that meet the pouring requirements obtained in step S4 into the mold and complete the assembly;

[0011] S6. Vibrate the mold and the UHPC materials poured into the mold in step S5;

[0012] S7. Cover the mold and the precast guardrail plate initially formed inside the mold after vibration in step S6 with a film and perform moisture preservation curing;

[0013] S8. Demold the mold, and perform heat curing or natural curing on the precast UHPC guardrail plate obtained after the treatment in step S7, and pay attention to surface and corner treatment.

[0014] According to the above solution, the inner surfaces of the bottom mold and the top mold are first subjected to demolding treatment, and a rubber slurry stop belt is attached to the inner surface of the top mold.

[0015] According to the above solution, the detachable side baffles on both sides are end side plugs that fit the profile of the guard plate facade. One is provided at each end of the guard plate, and each side baffle is installed through a plurality of pin bolts perpendicular to the baffle.

[0016] According to the above solution, two magnetic attraction baffles are arranged movably along the height direction of the guard rail plate.

[0017] According to the above solution, in step S8, during the heating stage of the thermal curing, the heating rate should not be greater than 15 °C / h; after the curing is completed, the cooling rate should not exceed 15 °C / h; when the curing temperature is between 50 °C and 70 °C, the curing time should not be less than 96 h; when the curing temperature is between 70 °C and 90 °C, the curing time should be preferably 48 h; the relative humidity during curing should not be lower than 95%. The natural curing time should not be less than 7 d.

[0018] According to the above solution, the thickness of the precast UHPC guard rail plate obtained in step S8 is 15 - 30 mm.

[0019] According to the above solution, the length of the precast UHPC guard rail plate obtained in step S8 is 1.4 - 2.0 m.

[0020] According to the above solution, the height of the precast UHPC guard rail plate obtained in step S8 is 0.6 - 1.2 m.

[0021] According to the above solution, step S5 specifically includes:

[0022] S501: Set the mold on the ground in a horizontal position with the back facing up.

[0023] S502: Keep the pouring surface horizontal.

[0024] S503: Open the top mold.

[0025] S504: Start pouring from one side of the mold and complete the pouring at one time, with slight vibration assistance during the process.

[0026] S505: After the pouring is completed, close the top mold and supplement the laying of roughening measures at the non-mold part.

[0027] According to the above solution, in step S6, the mold and the UHPC material inside the mold are lifted as a whole onto the vibrating table for overall vibration.

[0028] Implementing the rapid horizontal prefabrication method of the UHPC anti-collision guard rail plate of the present invention has the following beneficial effects:

[0029] 1. By utilizing the characteristics of UHPC materials such as high strength, durability, abrasion resistance, and impact resistance, the present invention can not only meet the erosion of snow melting salts in the northern region, but also meet the requirements of long-term flushing by road sweepers. Moreover, the early strength of UHPC increases rapidly, which can meet the requirements of rapid demolding and lifting and being put into transportation, greatly improving production and construction efficiency.

[0030] 2. The UHPC anti-collision guardrail plate of the present invention adopts a horizontal precast process to replace traditional concrete materials, traditional formwork support, and vertical pouring process. The quality of the precast anti-collision guardrail plate is improved, the construction procedures are reduced, which helps to reduce the construction difficulty, can shorten the construction period, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0032] Figure 1 is a schematic diagram of the precast product of the UHPC anti-collision guardrail plate of the present invention;

[0033] Figure 2 is a flowchart of the rapid horizontal precast method of the UHPC anti-collision guardrail plate of the present invention;

[0034] Figure 3 is a schematic diagram of the mold in the rapid horizontal precast method of the UHPC anti-collision guardrail plate of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to have a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the drawings.

[0036] The rapid horizontal precast method of the UHPC anti-collision guardrail plate of the present invention includes the following steps:

[0037] S1. Mold making: According to the size requirements of the anti-collision guardrail plate, make a mold. The mold includes a horizontally placed bottom mold 101, a horizontally placed top mold 102, removable side baffles 103, and a movable magnetic baffle 104 arranged along the height direction of the guardrail plate;

[0038] S2. UHPC material preparation: Prepare UHPC materials according to the appearance color, texture, etc. of the product. All materials must be inspected and accepted before use, and only after passing the inspection can they be allowed to enter the site for production. During the storage process of raw materials entering the site, waterproof and sealing work should be done to prevent the raw materials from getting damp and forming lumps, etc., to ensure the quality of the raw materials.

[0039] S3. UHPC Mixing: Mixing equipment should be reasonably allocated according to the project scale (pouring volume), construction technology and progress requirements. It is advisable to use a forced mixer, and the mixing volume should not be greater than 70% of the rated mixing volume. Before mixing, the state of the mixing equipment should be checked to ensure that the mixing equipment is clean and dry. Before mixing the first batch of mixture, the mixer should be wetted without leaving standing water. The prepared UHPC materials should be fed into the mixer for mixing. The water-cement ratio of the UHPC materials should be provided with corresponding ratios according to the product performance requirements and test results, and mixing should be carried out in accordance with the ratios. After all the premixed materials are poured into the mixer, water should be added while mixing. Mix for about 7 minutes until the state changes, and then add all the steel fibers evenly while mixing. Mix for about 5 minutes until uniform and discharge. The quality of the discharged mixture should be uniform without fiber agglomeration.

[0040] S4. UHPC Inspection: Inspect whether the performance of the mixed materials meets the pouring requirements. After mixing is completed, the fluidity and slump of the freshly mixed concrete should be measured in a timely manner. The fluidity should be within the specified range. Otherwise, the dosage of the water reducer or the water consumption should be adjusted to meet the requirements.

[0041] S5. Pouring: Before pouring, check the tightness of the formwork joints to ensure that there is no leakage during pouring. Sprinkle water on the surface of the formwork for wetting, but there should be no accumulated water. Pour the mixed materials that meet the pouring requirements obtained in step S4 into the mold and complete the assembly. The free height of the poured mixture should not exceed 1 m. When the pouring height is greater than 1 m, auxiliary tools such as chutes, inclined chutes, and pipes should be added. It is advisable to start pouring from one side of the formwork and complete the pouring at one time. Vibration can be assisted during the process.

[0042] S6. Vibration: Vibration treatment should be carried out on the mold and the UHPC materials poured into the mold in step S5. It is advisable to use a flat vibrator or an external vibrator. While ensuring vibration compaction, segregation and layering should be avoided. The vibration machinery and vibration method used should not only ensure the compaction of the concrete but also ensure uniform fiber distribution. The shifting distance of the surface vibrator should be such that the vibrating plate of the vibrator can cover the compacted part by not less than 100 mm. The vibration time for each vibration point should not exceed 20 s. When the surface of the mixture shows bleeding, it can be considered compacted.

[0043] S7. Film Covering and Moisture Conservation: Based on the temperature difference, consider film covering and moisture conservation for the mold and the precast guardrail plate initially formed inside the mold after vibration in step S6. After pouring is completed, spray water mist in a timely manner to keep the surface of the poured precast guardrail plate moist, and then cover it with a film in a timely manner for moisture conservation.

[0044] S8. Demolding and curing: Demold the mold, and perform heat curing or natural curing on the precast UHPC guardrail plate obtained through step S7. Pay attention to surface and corner treatment. During the heating stage of heat curing, the heating rate should not be greater than 15 °C / h; after the curing is completed, the cooling rate should not exceed 15 °C / h; when the curing temperature is between 50 °C and 70 °C, the curing time should not be less than 96 h; when the curing temperature is between 70 °C and 90 °C, the curing time should be 48 h; the relative humidity during curing should not be less than 95%. The natural curing time should not be less than 7 days, and the temperature difference between the inside and outside of the component should not be greater than 20 °C. When the temperature difference between the inside and outside is greater than 20 °C, heat preservation curing measures should be taken.

[0045] Furthermore, in the mold, demolding measures are taken on the inner surface of the horizontally placed bottom mold and the inner surface of the horizontally placed top mold; after the demolding measures on the inner surface of the horizontally placed top mold, roughening treatment measures are further adopted; the removable side baffles are end side plugs that fit the profile of the guardrail plate, with one set at each end of the guardrail plate. Each side baffle is disassembled and installed through 4 - 5 bolts perpendicular to the baffle; there are 2 magnetically attracted baffles arranged along the height direction of the guardrail plate. According to the vertical placement form of the guardrail plate, one magnetically attracted plate is laid at a high position for high-standard guardrails, and one magnetically attracted plate is laid at a high position for low-standard guardrails. The magnetically attracted plates are movable to adjust the height of the guardrail plate, thus completing the production of anti-collision guardrail plates of different specifications.

[0046] Furthermore, after the demolding measures on the inner surface of the horizontally placed top mold, roughening treatment measures are further adopted, and the thickness of the roughening treatment measures is about 2 - 5 mm.

[0047] Furthermore, the thickness of the precast UHPC guardrail plate obtained in step S8 is 15 - 30 mm.

[0048] Furthermore, the length of the precast UHPC guardrail plate obtained in step S8 is 1.4 - 2.0 m.

[0049] Furthermore, the height of the precast UHPC guardrail plate obtained in step S8 is 0.6 - 1.2 m.

[0050] Furthermore, the specific implementation measures of step S5 are as follows:

[0051] S501. Set the mold on the ground with the guardrail plate in a horizontal position and the back facing up;

[0052] S502. Keep the pouring surface horizontal;

[0053] S503. Open the top mold;

[0054] S504. During pouring, it is advisable to start pouring from one side of the mold and complete the pouring at one time. Vibration can be assisted during the process;

[0055] After pouring is completed, close the top mold and supplement the laying of roughening measures at the part without the mold.

[0056] Furthermore, according to the rapid horizontal prefabrication method of the UHPC anti-collision guardrail plate described in claim 1, in step S6, the mold and the UHPC material inside the mold are hoisted as a whole onto the vibrating table for overall vibration.

[0057] Furthermore, according to the rapid horizontal prefabrication method of the UHPC anti-collision guardrail plate described in claim 1, in step S7, the mold and the prefabricated UHPC guardrail plate are covered with a film and maintained with moisture. Furthermore, according to the UHPC anti-collision guardrail plate and the rapid horizontal prefabrication method described in claim 1, in step S8, the prefabricated UHPC guardrail plate is subjected to heat curing or natural curing.

[0058] Embodiment

[0059] See Figure 1 , the prefabricated product drawing of the UHPC anti-collision guardrail plate of the present invention is shown in detail in Figure 1 .

[0060] See Figure 2 , the specific preparation steps of the rapid horizontal prefabrication method of the UHPC anti-collision guardrail plate of the present invention are described as follows.

[0061] S1. According to the size requirements of the anti-collision guardrail plate, make a mold;

[0062] In this step S1, the mold includes a horizontally placed bottom mold, a horizontally placed top mold, removable side baffles, and movable magnetic baffles arranged along the height direction of the guardrail plate;

[0063] See Figure 3 , in the mold, demolding measures are taken on the inner surface of the horizontally placed bottom mold 101 and the inner surface of the horizontally placed top mold 102; after the demolding measures on the inner surface of the horizontally placed top mold 102, a roughening treatment measure is further adopted; the removable side baffles 103 are end side plugs that fit the profile of the guardrail plate facade, one is provided at each end of the guardrail plate, and each side baffle is disassembled and installed through four bolts 1031 perpendicular to the baffle; there are two movable magnetic baffles 104 arranged along the height direction of the guardrail plate. According to the vertical placement form of the guardrail plate, one magnetic plate is laid at a high position for the high standard and one magnetic plate is laid at a high position for the low standard. The magnetic plate is movable to adjust the height of the guardrail plate, so as to complete the production of anti-collision guardrail plates of different specifications;

[0064] S2. Configure light gray UHPC materials according to the appearance color, texture, etc. of the product; before using all materials, acceptance work must be done well, and only after passing the acceptance can they be allowed to enter the site for production. During the storage process of raw materials entering the site, waterproof and sealing work should be done well to prevent phenomena such as agglomeration due to moisture absorption of raw materials and ensure the quality of raw materials;

[0065] S3. For mixing, mixing equipment should be reasonably equipped according to the project scale (pouring volume), construction technology and progress requirements. It is advisable to use a forced mixer, and the mixing volume should not be greater than 70% of the rated mixing volume; before mixing, the state of the mixing equipment should be checked, and it should be ensured that the mixing equipment is clean and dry before mixing. Before mixing the first batch of mixture, the mixer should be wetted and there should be no standing water; place the prepared UHPC materials in the mixer for mixing; the water-cement ratio of UHPC materials should be provided with corresponding ratios according to the product performance requirements based on the test results and mixing should be carried out in accordance with the ratios; after pouring all the premixed materials into the mixer, add water while mixing, mix for about 7 minutes until the state changes, and then evenly add all the steel fibers while mixing, and mix for about 5 minutes until uniform and discharge; the quality of the discharged mixture is uniform and there should be no fiber agglomeration;

[0066] S4. Detect whether the performance of the mixed materials meets the pouring requirements; after mixing is completed, the fluidity and slump of the freshly mixed concrete should be measured in a timely manner. The fluidity should be within the specified range, otherwise the dosage of the water reducer or the water consumption should be adjusted to meet the requirements;

[0067] S5. Before pouring, check the tightness of the formwork joints to ensure that there is no leakage of slurry during pouring. Sprinkle water on the surface of the formwork to wet it, but there should be no accumulated water. Place the mixed materials that meet the pouring requirements obtained in step S4 into the mold and complete the assembly; the free height of the mixture pouring should not exceed 1 m. When the pouring height is greater than 1 m, auxiliary tools such as chutes, inclined troughs, and pipes should be added;

[0068] The specific implementation steps of this step S5 are as follows:

[0069] S501. Set the mold on the ground in a horizontal position with the guard plate and the back facing up;

[0070] S502. Keep the pouring surface horizontal;

[0071] S503. Open the top mold;

[0072] S504. During pouring, it is advisable to start pouring from one side of the formwork and complete the pouring at one time. Vibration can be assisted during the process;

[0073] S505. After pouring is completed, close the top mold and supplement the laying of roughening measures at the part without the mold.

[0074] S6. Vibration treatment is carried out on the mold and the UHPC material poured into the mold in step S5; it is advisable to use a flat vibrator or an external mold vibrator for vibration. While ensuring vibration compaction, segregation and layering should be avoided. The vibration machinery and vibration method adopted should not only ensure the compaction of the concrete, but also ensure the uniform distribution of fibers; the shifting distance of the surface vibrator should be such that the vibrating plate of the vibrator can cover the compacted part by no less than 100 mm; the vibration time for each vibration point should not exceed 20 s. When the surface of the mixture shows bleeding, it can be regarded as compacted; then the mold and the UHPC material inside the mold are hoisted onto the vibrating table for overall vibration.

[0075] S7. Based on the temperature difference, consider film covering and moisture conservation for the mold and the precast guardrail plate initially formed inside the mold after vibration in step S6; after pouring is completed, spray water mist in time to keep the surface of the poured precast guardrail plate moist, and cover it with a film in time for moisture conservation.

[0076] S8. Demold the mold, and complete heat curing or natural curing for the precast UHPC anti-collision guardrail plate obtained after the treatment in step S7, and pay attention to surface and corner treatment. The heat curing temperature is 90 °C and the curing time is 48 h; the relative humidity for curing is 95%. Make the strength of the initially formed precast anti-collision guardrail plate increase rapidly in a short time and reach 90% of the design strength. Or take natural curing measures, the curing time is not less than 7 d, and the temperature difference between the inside and outside of the component shall not be greater than 20 °C. When the temperature difference between the inside and outside is greater than 20 °C, it is advisable to take heat preservation curing measures.

[0077] After the curing treatment in this step S8, the strength of the precast UHPC anti-collision guardrail plate finally reaches the design strength, that is, a precast product with the same quality as, or even better quality than, the conventional precast method of UHPC anti-collision guardrail plate is obtained.

[0078] In addition, it should be noted that since the strength of the precast anti-collision guardrail plate after step S8 has reached 90% or more of the design strength, the structural strength of the anti-collision guardrail plate in this state meets the requirements for hoisting and transportation.

[0079] In this embodiment, before pouring the UHPC anti-collision guardrail plate, demoulding measures are taken on the bottom mold and the top mold. After the demoulding measures on the inner surface of the top mold, a roughening treatment measure is further adopted, and the thickness of the roughening treatment measure is about 3 mm; the thickness of the precast UHPC guardrail plate is 15 mm, the length is 1.5 m, and the height of the guardrail plate is 0.85 m; the mechanical properties of the anti-collision guardrail plate are as follows: the standard value of the compressive strength is 120 MPa; the standard value of the tensile strength is 5 MPa.

[0080] Performance test:

[0081] The rapid horizontal prefabrication method of the above UHPC anti-collision guardrail plate is used to prefabricate UHPC anti-collision guardrail plates with different design strengths, and the strength, appearance quality and accuracy of the UHPC prefabricated anti-collision guardrail plates are tested respectively during the prefabrication process.

[0082] Compared with the existing technology, a rapid horizontal prefabrication method of a UHPC anti-collision guardrail plate in this description can not only meet the erosion of snow melting salts in the northern region by utilizing the characteristics of UHPC materials such as high strength, durability, abrasion resistance and impact resistance; but also meet the use requirements such as the long-term flushing of road sweepers; and the early strength of UHPC increases relatively fast, which can meet the requirements of rapid demolding and lifting and being put into transportation, greatly improving the production and construction efficiency.

[0083] The UHPC anti-collision guardrail plate adopts a horizontal prefabrication process to replace the traditional concrete materials, traditional formwork and vertical pouring process. The quality of the prefabricated anti-collision guardrail plate is improved, the construction procedures are reduced, which helps to reduce the construction difficulty, can shorten the construction period and improve the work efficiency; and the whole life cycle is longer.

[0084] Compared with the existing metal guardrails and concrete guardrails, the UHPC anti-collision guardrail plate in this description has excellent anti-corrosion performance and wear resistance. In an environment with corrosive media or an environment with wear resistance requirements, such as an environment where snow melting chlorides are frequently used in the north, the rapid horizontal prefabrication method of the UHPC anti-collision guardrail plate in this description can solve the problems of poor corrosion resistance, low wear resistance grade, high maintenance cost and complex construction, reducing the whole life cost of metal and concrete guardrails, so it has broad application prospects.

[0085] UHPC materials are high-strength, durable, abrasion-resistant and impact-resistant, which can not only meet the erosion of snow melting salts in the northern region; but also meet the use requirements such as the long-term flushing of road sweepers; and the early strength of UHPC increases relatively fast, which can meet the requirements of rapid demolding and lifting and being put into transportation, greatly improving the production and construction efficiency.

[0086] The UHPC anti-collision guardrail plate adopts a horizontal prefabrication process to replace the traditional concrete materials, traditional formwork and vertical pouring process. The quality of the prefabricated anti-collision guardrail plate is improved, the construction procedures are reduced, and at the same time, it can meet the influence of snow and salt erosion in the northern region.

[0087] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All these fall within the protection scope of the present invention.

Claims

1. A rapid horizontal prefabrication method for UHPC anti-collision guardrail panels, characterized in that: The following steps are involved: S1. A mold is made according to the size of the anti-collision guardrail, wherein the mold includes a horizontally placed bottom mold, a top mold, removable side baffles, and a movable magnetic baffle arranged along the height direction of the guardrail; S2. Configure UHPC materials; S3, putting the prepared UHPC material into a mixer for mixing; S4. Check whether the performance of the mixed materials meets the pouring requirements; S5, placing the mixed material that meets the casting requirements obtained in step S4 in the mold and completing the assembly; S6, vibrating the mold and the UHPC material poured inside the mold according to step S5; S7, laminating and moisturizing the mold and the prefabricated guardrail board initially formed inside the mold after vibrating in step S6; S8, removing the mold, and completing thermal curing or natural curing of the prefabricated UHPC guardrail panel obtained through the process of step S7.

2. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: The inner surfaces of the bottom mold and the top mold are first subjected to demoulding treatment, and a rubber stopper tape is pasted on the inner surface of the top mold.

3. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: The removable side baffles are end side baffles that match the vertical contour of the guard plate, one is arranged at each end of the guard plate, and each side baffle is installed by a plurality of bolts perpendicular to the baffle.

4. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: Two magnetic baffles are movably arranged along the height direction of the guardrail plate.

5. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 2 is characterized in that: In step S8, during the heating stage of thermal curing, the heating rate should not be greater than 15°C / h; after the curing, the cooling rate should not exceed 15°C / h; when the curing temperature is 50°C-70°C, the curing time should not be less than 96h; when the curing temperature is 70°C-90°C, the curing time should be 48h; the curing relative humidity should not be less than 95%. The natural curing time is not less than 7d.

6. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: The thickness of the prefabricated UHPC guardrail plate obtained in step S8 is 15 to 30 mm.

7. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: The length of the prefabricated UHPC guardrail plate obtained in step S8 is 1.4 to 2.0 m.

8. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: The height of the prefabricated UHPC guardrail panel obtained in step S8 is 0.6 to 1.2 m.

9. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: The step S5 specifically includes: S501, placing the mold on the ground with the guard plate horizontally and the back side facing upward; S502, keep the casting surface level; S503, opening the top mold; S504, pouring starts from one side of the formwork and is completed in one go, with slight vibration as an aid during the process; S505. After pouring, close the top mold and add roughening measures to the parts without molds.

10. The rapid horizontal prefabrication method of UHPC anti-collision guardrail according to claim 1 is characterized in that: In step S6, the mold and the UHPC material inside the mold are hoisted as a whole on a vibration table for overall vibration.

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