Roadside guardrail UHPC armor protection device convenient and fast to install

Abstract

The utility model relates to a roadside guardrail UHPC armor protection device convenient to quickly install, and belongs to the technical field of building engineering construction. In order to solve the problems of poor wear resistance, great influence of construction environment factors and the like caused by spraying a protective coating on a concrete pavement at present, three sections of fold line type UHPC protective plates are arranged along a concrete guardrail, the UHPC protective plates are connected with the concrete guardrail through fasteners, and every two adjacent UHPC protective plates are matched through a splicing structure. The UHPC protection plate comprises an upper section, a middle section and a lower section which are integrally formed and connected, the upper section wraps the upper end of the concrete guardrail, the middle section covers the waist of the concrete guardrail, and the lower section covers the lower end of the concrete guardrail and is inserted into the roadbed open groove. A protective barrier is formed for the concrete guardrail, the problem that the concrete guardrail is eroded and damaged by a severe environment is solved, the service life of the concrete guardrail is prolonged, and the later maintenance cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering construction, especially a roadside guardrail UHPC armor protection device convenient to install fast. BACKGROUND

[0002] The guardrails on both sides of the bridge deck of the expressway and national highway usually adopt reinforced concrete structure guardrails, due to the large snowfall and long cold period in the northern region, the concrete will appear surface deterioration, pitted, peeling and other diseases due to freeze-thaw damage, deicing salt corrosion and other reasons, the serious parts are rusted, the stones are loose and large area is peeled off, in order to avoid the occurrence of the above diseases, the protective coating is usually sprayed on the surface of the concrete guardrail to reduce the penetration of deicing salt and prolong the service life of the concrete guardrail.

[0003] At present, the spraying protective coating material commonly used on the surface of the concrete guardrail mainly includes epoxy resin coating, polyester coating, acrylic coating, ceramic thermal spraying coating and fluorocarbon resin coating, the epoxy resin coating has poor wear resistance, may be peeled off due to the microcracks of the concrete after long-term use, the polyester coating has weak resistance to acid and alkali corrosion, the acrylic coating has insufficient wear resistance and corrosion resistance, the two kinds usually need to be used in combination with the epoxy resin, such as the epoxy / polyester composite coating is usually used for the outer wall of the building, the ceramic thermal spraying coating is suitable for high wear or special industrial environment, but the construction cost is high, the adhesion of the fluorocarbon resin coating depends on the base treatment, and the long-term performance is greatly affected by temperature, such as the epoxy closed primer + fluorocarbon topcoat is usually used for the bridge tunnel. In addition, the spraying protective coating is greatly affected by the construction environment factors, and the damaged coating needs to be repaired in time to avoid secondary damage, and regular inspection and repair will inevitably increase the labor cost investment and the economic cost of the highway infrastructure construction.

[0004] In view of this, a high-performance protection system that can be conveniently installed on the concrete guardrails on both sides of the road surface is researched and designed, which can effectively prevent the guardrail diseases of the concrete guardrails in the northern region caused by freeze-thaw, salt corrosion, weathering and other severe environments. SUMMARY

[0005] In view of the defects in the prior art, the utility model aims at providing a roadside guardrail UHPC armor protection device convenient to install fast, three-section fold line type UHPC protection plates are arranged and spliced to form the protection system outside the concrete guardrail, the erosion damage of the concrete guardrail under the severe environment such as freeze-thaw and salt corrosion can be fundamentally solved, and thus the problems in the background art part can be effectively solved.

[0006] The above technical purpose of the utility model is realized through the following technical scheme.

[0007] A roadside guardrail UHPC armor protection device convenient to quickly install, comprising a plurality of UHPC protection plates distributed in sequence along the concrete guardrail, each UHPC protection plate is connected with the concrete guardrail through fasteners, and two adjacent UHPC protection plates are matched through a splicing structure, wherein:

[0008] The longitudinal section of the UHPC protection plate is in a three-segment broken line type structure, comprising an upper segment, a middle segment and a lower segment integrally connected, and the upper segment is wrapped around the upper end of the concrete guardrail, the middle segment covers the waist of the concrete guardrail, and the lower segment covers the lower end of the concrete guardrail and is inserted into the groove of the roadbed.

[0009] As a further preferred embodiment of the above technical solution: the upper segment is in a "factory" shape structure, and the included angle α between the lower end of the upper segment and the horizontal direction is 80°-85°.

[0010] As a further preferred embodiment of the above technical solution: the included angle β between the middle segment and the horizontal direction is 50°-60°.

[0011] In some preferred embodiments, the height of the upper segment is 55.5-125 cm, the height of the middle segment is 18-25.5 cm, and the height of the lower segment is 7.5-20 cm.

[0012] Based on the above technical solution, further, a grouting hole is provided on the UHPC protection plate, the grouting hole is located in the middle segment, and grout is injected through the grouting hole in the gap between the UHPC protection plate and the concrete guardrail.

[0013] As a further preferred embodiment of the above technical solution: the splicing structure comprises a first mounting portion and a second mounting portion arranged on both sides of the UHPC protection plate, and the first mounting portion is connected with the second mounting portion of the UHPC protection plate adjacent to one side thereof, and the second mounting portion is connected with the first mounting portion of the UHPC protection plate adjacent to the other side thereof.

[0014] In some preferred embodiments, the first mounting portion of the UHPC protection plate and the second mounting portion of the other adjacent UHPC protection plate are in splicing type cooperation or clamping type cooperation.

[0015] Compared with the prior art, the present application can produce the following beneficial effects:

[0016] 1. By arranging the three-segment broken line type UHPC protection plate, the basic structure of the concrete guardrail on both sides of the current expressway is adapted and covered, the splicing structure arranged on both sides of the UHPC protection plate can facilitate the quick installation between the two adjacent UHPC protection plates, the UHPC protection plate has excellent functions such as high durability and high crack resistance, which can effectively protect the concrete guardrail, and provides a new idea for solving the erosion disease problem of the concrete guardrail in poor environment.

[0017] 2、The UHPC protective plate is a prefabricated part matched with the concrete guardrail, is processed in advance according to design requirements, has simple structure and is quick to install, provides a powerful protective barrier for the erosion and damage of the concrete guardrail in the freezing and thawing, salt corrosion, weathering and other harsh environments in the northern region, effectively prolongs the original service life of the concrete guardrail, and saves the later maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiments will be briefly introduced.

[0019] Figure 1 It is a structure schematic view of the UHPC protective plate of the embodiment one of the utility model;

[0020] Figure 2 It is another angle structure schematic view of the UHPC protective plate of the embodiment one of the utility model;

[0021] Figure 3 It is an end plane schematic view of the UHPC protective plate of the embodiment one of the utility model;

[0022] Figure 4 It is a structure schematic view of the UHPC protective plate of the embodiment two of the utility model;

[0023] Figure 5 It is a structure schematic view of the UHPC protective plate of the embodiment three of the utility model;

[0024] Figure 6 It is another angle structure schematic view of the UHPC protective plate of the embodiment three of the utility model;

[0025] Figure 7 It is a schematic view of the UHPC protective plate of the utility model in the use state;

[0026] In the drawing: 1, UHPC protective plate;11, upper section;111, transverse protection along;12, middle section;13, lower section;2, mounting hole;3, grouting hole;4, splicing structure;41, first mounting part;42, second mounting part. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments will be described clearly and completely in combination with the drawings of the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments, not all the embodiments. Other embodiments can be obtained by those skilled in the art without creative labor.

[0028] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] Embodiment one:

[0030] With reference to Figures 1-6 The utility model provides a kind of roadside guardrail UHPC armor protection device of quick installation, including several UHPC protection plate 1 along concrete guardrail sequentially distributed, two mounting holes 2 are set on each UHPC protection plate 1, and it is connected with concrete guardrail by fastener insertion mounting hole 2, the fastener used in this embodiment is anchor bolt, two adjacent UHPC protection plate 1 is matched by splicing structure 4, wherein: the longitudinal section of UHPC protection plate 1 is three-segment broken line type structure, including integrally connected upper section 11, middle section 12 and lower section 13, two mounting holes 2 are located in upper section 11, upper section 11 is wrapped in the upper end of concrete guardrail, middle section 12 is covered in the waist of concrete guardrail, and lower section 13 is covered in the lower end of concrete guardrail and is inserted in roadbed slot.

[0031] Specifically, UHPC protection plate 1 is precast, which is made of ultra-high performance concrete (UHPC). The advantages of UHPC protection plate 1 are as follows: first, it has high durability, including good impermeability, corrosion resistance, frost resistance and chemical resistance, which can be used for a long time in harsh environments and reduce maintenance costs in the later period; second, it has good crack resistance, including high bending resistance, low shrinkage rate and dense internal structure, which can effectively inhibit the generation and development of cracks; third, it has excellent toughness, including higher toughness, which can absorb more energy during impact and reduce damage to the protected object; fourth, it has high strength, which can withstand large external impact and effectively resist vehicle impact to protect the safety of roads and surrounding facilities. Therefore, installing UHPC protection plate 1 on one side of the concrete guardrails on both sides of the road surface can be like wearing a layer of "armor" on the surface of the concrete guardrails next to the road surface, which can effectively protect the concrete guardrails from harsh environmental erosion and prolong their service life.

[0032] In some preferred embodiments, as Figure 3As shown, the upper section 11 has a "factory" - shaped structure, and the angle α between the lower end of the upper section 11 and the horizontal direction is 80° - 85°, preferably 84°; the angle β between the middle section 12 and the horizontal direction is 50° - 60°, preferably 55°.

[0033] More specifically, to meet the protection requirements of the concrete guardrails on both sides of the bridge deck of conventional expressways, the overall height of the UHPC protection plate 1 is 81 - 170.5 cm, where: the height H1 of the upper section 11 is 55.5 - 125 cm, the height H2 of the middle section 12 is 18 - 25.5 cm, and the height H3 of the lower section 13 is 7.5 - 20 cm.

[0034] To cooperate with the top protection requirements of the concrete guardrail, the width of the lateral edge 111 of the upper section 11 is 5 - 15 cm. [[ID=�]]

[0035] As Figure 1 shown, the UHPC protection plate 1 is also provided with grouting holes 3. The grouting holes 3 are located in the middle section 12.浆液 is poured into the gap between the UHPC protection plate 1 and the concrete guardrail through the grouting holes 3. In this embodiment, the slurry uses a non - shrinkage grouting material, and the slurry is injected through the grouting holes 3 until the gap is full.

[0036] To facilitate the rapid installation of the UHPC protection plate 1, the splicing structure 4 in this embodiment includes a first installation part 41 and a second installation part 42. Referring to the orientation shown Figure 2 here, the first installation part 41 is an extension plate arranged on the left side of the UHPC protection plate 1, and the extension plate extends outward along the length direction of the UHPC protection plate 1. The second installation part 42 is a groove arranged on the right side of the UHPC protection plate 1, and the groove extends inward along the length direction of the UHPC protection plate 1. The structures of the extension plate and the groove are adapted to each other, that is, the extension plate is spliced and matched with the groove of another adjacent UHPC protection plate 1, and the groove is spliced and matched with the extension plate of the adjacent UHPC protection plate 1, so as to effectively protect the concrete guardrail on the highway bridge deck.

[0037] Embodiment Two:

[0038] Different from the above Embodiment One, the connection between two adjacent UHPC protection plates 1 adopts a snap - fit. As Figure 4 shown, a plurality of serrated slots are arranged at intervals on the first installation part 41, and a plurality of bosses are arranged at intervals on the second installation part 42. The structures of the bosses and the serrated slots are adapted to each other. When two UHPC protection plates 1 are connected, the bosses are snapped into the serrated slots for snap - fit, greatly enhancing the connection stability between the two UHPC protection plates 1.

[0039] Embodiment Three:

[0040] Different from the first embodiment above, the corners of the "factory" - shaped structure of the upper section 11 are arcs with a radius of 2.5 - 3.5 cm. As Figures 5-6 shown, this structure of this embodiment is applicable to the type where the upper corner of the concrete guardrail is an arc - shaped structure.

[0041] Embodiment Four:

[0042] Refer to Figure 7

[0043] First, process the pre - fabricated parts of the UHPC protection plate 1 of the present utility model according to the concrete guardrail to be protected.

[0044] Then, thoroughly remove the loose concrete, pollutants, and attachments on the concrete guardrail, rinse it with high - pressure water and dry it. Cut a 5 cm * 5 cm roadbed slot on the asphalt road surface on the root side of the concrete guardrail. After the slotting is completed, clean up the residue.

[0045] Finally, implant fasteners (anchor bolts) on the concrete guardrail according to the set positioning points. Place the bottom of the UHPC protection plate 1 into the cut roadbed slot and align it with the installation position of the fasteners. Adjust the gap between the UHPC protection plate 1 and the concrete guardrail. When this gap reaches 0.5 - 1 cm, fix the fasteners. Use sealant to splice the connections between two adjacent UHPC protection plates 1. Use flexible filler to block the extra space between the root of the UHPC protection plate 1 and the roadbed slot. Pour non - shrinkage grouting material into the gap between the UHPC protection plate 1 and the concrete guardrail from the grouting hole 3 until it is full. Seal the grouting hole 3 and the installation hole 2 at the fastener position with high - strength polymer mortar. By protecting the side of the concrete guardrail close to the road surface with the UHPC protection plate 1, while protecting the concrete guardrail from being damaged by harsh environments, it can effectively resist large external force impacts, reduce the collision damage to the concrete guardrail, and protect the safety of surrounding facilities.

[0046] It should be clear that the above - detailed description of the embodiments of the present utility model provided in the drawings is only for further explaining the present utility model, and is not intended to limit the scope of the present utility model claimed. Based on the embodiments of the present utility model, some non - essential improvements and adjustments made by those of ordinary skill in the art according to the above content of the present utility model all fall within the protection scope of the present utility model.​

Claims

1. A roadside guardrail UHPC armor protection device facilitating quick installation, characterized in that, The application relates to a UHPC protective plate (1) arranged along a concrete guardrail, wherein the UHPC protective plate (1) is connected to the concrete guardrail through fasteners, two adjacent UHPC protective plates (1) are matched through a splicing structure (4), and the UHPC protective plate (1) has a three-segment broken line type structure. The UHPC protective plate (1) has a three-segment broken line type structure, and comprises an upper segment (11), a middle segment (12) and a lower segment (13) which are integrally connected, the upper segment (11) is wrapped around the upper end of the concrete guardrail, the middle segment (12) covers the waist of the concrete guardrail, and the lower segment (13) covers the lower end of the concrete guardrail and is inserted into a groove of a roadbed.

2. A roadside guardrail UHPC armor protection device according to claim 1, characterized in that, The upper segment (11) has a "factory" type structure, and the lower end of the upper segment (11) forms an angle alpha of 80-85 degrees with the horizontal direction.

3. A roadside guardrail UHPC armor protection device for facilitating quick installation according to claim 1, characterized in that, The middle segment (12) forms an angle beta of 50-60 degrees with the horizontal direction.

4. A roadside guardrail UHPC armor protection device for easy and quick installation according to claim 1, characterized in that, The height of the upper segment (11) is 55.5-125 cm, the height of the middle segment (12) is 18-25.5 cm, and the height of the lower segment (13) is 7.5-20 cm.

5. A roadside guardrail UHPC armor protection device for easy and quick installation according to claim 1, characterized in that, The UHPC protective plate (1) is further provided with a grouting hole (3) located in the middle segment (12), and grouting liquid is injected into the gap between the UHPC protective plate (1) and the concrete guardrail through the grouting hole (3).

6. A roadside guardrail UHPC armor protection device for easy and quick installation according to claim 1, characterized in that, The splicing structure (4) comprises a first mounting part (41) and a second mounting part (42) arranged on the two sides of the UHPC protective plate (1), the first mounting part (41) is connected to the second mounting part (42) of the UHPC protective plate (1) adjacent to the first mounting part (41) on one side, and the second mounting part (42) is connected to the first mounting part (41) of the UHPC protective plate (1) adjacent to the second mounting part (42) on the other side.

7. A roadside guardrail UHPC armor protection device for easy and quick installation according to claim 6, characterized in that, The first mounting part (41) of the UHPC protective plate (1) and the second mounting part (42) of the other adjacent UHPC protective plate (1) are matched in a splicing type or a clamping type.

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