Modular assembly type rapid emergency road board

Abstract

The utility model discloses a modular assembly type quick emergency road board belongs to quick emergency road paving technical field. Including geopolymerization concrete prefabricated base body, the geopolymerization concrete prefabricated base body is cuboid structure, its top is provided with the composite antiskid steel sheet, and twelve edge edges are covered with the edge angle steel, and the inside of geopolymerization concrete prefabricated base body is provided with double -layer bidirectional reinforcement cage, double -layer bidirectional reinforcement cage is welded with composite antiskid steel sheet and edge angle steel, the center of geopolymerization concrete prefabricated base body lateral wall short side and long side is provided with a side hoist through -hole respectively, the utility model discloses simultaneously has given the splicing stability of concrete road board and the surface intensity of steel road board, and simultaneously, the utility model discloses optimized hoist structure, through setting up side hoist through -hole, four -way hoist hole adapts to the operation demand of multiple lifting appliance (such as steel cable or special lifting appliance). Convenient transportation and deployment, through top hoist hole, further convenient on -the -spot hoist splicing.

Description

Technical Field

[0001] This utility model relates to the field of rapid emergency road paving technology, specifically to a modular road slab structure that can be assembled quickly. Background Technology

[0002] In emergency rescue, temporary access road construction (such as temporary roads, temporary helipads, military roads, etc.) or large-scale event support (temporary helipads, military roads, etc.), it is necessary to lay temporary road slabs on the ground to quickly improve ground traffic conditions.

[0003] Currently, the commonly used road slabs are concrete slabs and steel slabs. Concrete slabs are relatively heavy, and because existing concrete slabs often lack reasonable hoisting facilities, their deployment efficiency during transportation or on-site assembly is low. In addition, concrete has low surface strength, making it prone to damage, especially under the pressure of tracked machinery (such as excavators, bulldozers, and other construction machinery or tracked armored vehicles such as tanks).

[0004] Steel road slabs are lighter than concrete road slabs and have higher surface strength, allowing them to withstand the pressure of tracked machinery. However, steel road slabs have poor splicing stability and are prone to displacement and settlement under repeated vehicle pressure. In addition, steel road slabs have poor anti-slip properties in rainy or snowy weather.

[0005] For the reasons mentioned above, there is an urgent need to develop a modular road slab that combines the stability of concrete road slabs with the surface strength of steel road slabs, while also being convenient for transportation and on-site deployment and quick assembly. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model proposes a modular road slab that can be assembled quickly, solving the problems of poor surface strength and difficult hoisting of existing concrete road slabs, as well as the poor stability of steel road slab splicing.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A modular prefabricated rapid emergency road slab includes a precast concrete substrate, which is a cuboid structure with a composite anti-slip steel plate on its top surface and edging angle steel covering its twelve edges. A double-layer, bidirectional reinforcing cage is installed inside the precast concrete substrate, and the double-layer, bidirectional reinforcing cage is welded to the composite anti-slip steel plate and the edging angle steel. A side lifting through-hole is respectively provided at the center of the short and long sides of the sidewall of the precast concrete substrate, and a galvanized steel sleeve is pre-embedded in the side lifting through-hole.

[0009] Preferably, the composite anti-slip steel plate has anti-slip texture pressed on its top surface and anchor nails welded in an array on its bottom surface, the anchor nails being inserted into the precast polymer concrete substrate.

[0010] Preferably, the top surface of the modular prefabricated rapid emergency road slab is provided with a top lifting hole, which penetrates the composite anti-slip steel plate and extends into the precast polymer concrete substrate, and a threaded sleeve is pre-embedded in the top lifting hole.

[0011] Preferably, the precast polymer concrete substrate has tenons on one long side and one short side, and grooves on the other long side and the other short side, with the tenons of adjacent modular prefabricated rapid emergency road slabs fitting into the grooves with clearance.

[0012] Preferably, the outer wall of the tenon is covered with angle steel, and the upper and lower ends of the angle steel are welded to the edge-covering angle steel.

[0013] Preferably, it also includes a cross connecting plate, wherein the four corners of the composite anti-slip steel plate are provided with L-shaped cuts, and the part of the edge angle steel on the top surface that exposes the L-shaped cuts is provided with bolt connection holes, and adjacent modular prefabricated rapid emergency road panels are connected through the cross connecting plate and the bolt connection holes.

[0014] Preferably, the dimensions of the precast polymer concrete substrate are 2000mm×1500mm×400mm or 4000mm×4000mm×400mm.

[0015] Preferably, the edge-sealing angle steel is an L50×50×5mm equilateral angle steel.

[0016] Preferably, the composite anti-slip steel plate has a thickness of 3mm to 5mm and an anti-slip texture is pressed on the top surface.

[0017] Preferably, the diameter of the side lifting through hole is 50mm, and the diameter of the top lifting hole is 22mm.

[0018] Beneficial effects: Compared with the prior art, the present invention can achieve at least the following technical effects;

[0019] 1. The base of this utility model is precast polymer concrete, and a composite anti-slip steel plate is set on the top, which takes into account both the splicing stability of concrete road slabs and the surface strength of steel road slabs.

[0020] 2. This utility model optimizes the hoisting structure by providing side hoisting through holes, allowing for four-way hoisting to accommodate various hoisting tools (such as steel cables or specialized hoisting tools). This facilitates transportation and deployment, and the top hoisting holes further simplify on-site hoisting and assembly.

[0021] 3. This utility model provides two connection methods: connecting plate connection and tenon groove connection, which prevents the road panel modules from moving to each other and improves the splicing stability.

[0022] 4. This utility model adopts a combination of polymer concrete, double-layer steel cage, and angle steel edging, which improves the compressive strength of the road slab (compressive strength ≥ 80MPa).

[0023] 5. The edge-wrapping angle steel of this utility model can not only improve the compressive and tensile strength of the road slab, but also play a protective role during transportation, avoiding damage to the edges and corners of the base material.

[0024] 6. The composite anti-slip steel plate of this utility model is provided with anti-slip texture, which increases friction and can meet the conditions for passage in rainy and snowy weather, thus improving safety. Attached Figure Description

[0025] Figure 1 This utility model is shown in the overall structural diagram.

[0026] Figure 2 This is a schematic diagram of the double-layer steel cage structure of this utility model.

[0027] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0028] Figure 4 This is a schematic diagram of the anchoring nails for the composite anti-slip steel plate of this utility model.

[0029] Figure 5 This is a schematic diagram of the connection structure in Embodiment 1 of this utility model.

[0030] Figure 6 This is a schematic diagram of the connection structure in Embodiment 2 of this utility model.

[0031] Figure 7 This is a schematic diagram of the connector in Embodiment 2 of this utility model.

[0032] Figure 8 This utility model Figure 6 Enlarged view of point A.

[0033] Figure 9 This is a diagram of the reinforcement arrangement of this utility model.

[0034] In the diagram, 1. Precast concrete substrate; 2. Composite anti-slip steel plate; 3. Edge-sealing angle steel; 4. Double-layer bidirectional reinforcing cage; 5. Side hoisting through hole; 501. Galvanized steel sleeve; 6. Anchor nail; 7. Bolt connection hole; 8. Cross connection plate; 9. Top hoisting hole; 901. Threaded sleeve; 10. Tenon; 11. Groove. Detailed Implementation

[0035] The present invention will be further explained below with reference to specific implementation examples.

[0036] Please see Figure 1 , Figure 2This utility model proposes a modular prefabricated rapid emergency road slab, which includes a precast concrete substrate 1, which is a cuboid structure. The top surface of the precast concrete substrate 1 is provided with a composite anti-slip steel plate 2, and its twelve edges are covered with edge-sealing angle steel 3. The interior of the precast concrete substrate 1 is provided with a double-layer bidirectional steel cage 4, which is welded to the composite anti-slip steel plate 2 and the edge-sealing angle steel 3. The center of the short side and the long side of the side wall of the precast concrete substrate 1 is respectively provided with a side lifting through hole 5, and a galvanized steel sleeve 501 is pre-embedded in the side lifting through hole 5.

[0037] The base material of this invention is geopolymer concrete. Compared with traditional concrete, geopolymer concrete has superior physical properties and durability. The precast geopolymer concrete base 1 is available in two standard sizes: 2000mm×1500mm×400mm or 4000mm×4000mm×400mm. The composite anti-slip steel plate 2 has a thickness of 3mm to 5mm and anti-slip texture is pressed on the top surface. It meets the surface strength requirements of the road slab while providing good anti-slip effect, enabling the road slab to have good traffic conditions in rainy and snowy weather.

[0038] The precast polymer concrete substrate 1 contains a double-layer, bidirectional steel cage 4 with HRB400 grade Φ16@200 reinforcement. The spacing α of the steel bars in the double-layer, bidirectional steel cage 4 is 200mm, and the reinforcement is arranged in a double-layer, bidirectional manner (e.g., Figure 2 As shown in the figure, to improve the compressive and tensile strength of the road slab, the edge angle steel 3 is selected as L50×50×5mm equal angle steel, which is welded together with the double-layer bidirectional steel cage 4 before concrete pouring.

[0039] Please see Figure 3 The diameter of the side hoisting through hole is 50mm, and the diameter of the top hoisting hole is 22mm. The side hoisting hole 5 penetrates the precast concrete substrate 1, and the hoisting steel cable can be passed through the side hoisting through hole 5 for hoisting, or other special hoisting tools can be used for hoisting. A galvanized steel sleeve 501 is pre-embedded in the side hoisting hole, so that the strength of the side hoisting through hole 5 can withstand the weight of a single road slab. At the same time, the galvanized steel sleeve 501 also has good corrosion resistance.

[0040] Because the road slab is heavy, it is very difficult to place the road slab on the ground and adjust its level position during splicing. Therefore, the top surface of the modular prefabricated rapid emergency road slab is provided with a top lifting hole 9. The top lifting hole 9 penetrates the composite anti-slip steel plate 2 and extends into the precast polymer concrete base 1. A threaded sleeve 901 is pre-embedded in the top lifting hole 9.

[0041] The threaded sleeve 901 inside the top lifting hole 9 can be used to connect the lifting parts. During on-site splicing, the road slab can be directly lifted to the predetermined splicing position (aligned with the adjacent road slab) and dropped vertically, avoiding the need to adjust the horizontal position of the road slab after it lands.

[0042] Furthermore, the top surface of the composite anti-slip steel plate 2 is pressed with anti-slip texture, and the bottom surface is welded with an array of anchor nails 6, which are inserted into the precast polymer concrete substrate 1.

[0043] Please see Figure 4 By setting anchor nails 6, the connection stability between the composite anti-slip steel plate 2 and the ground polymer concrete substrate 1 is increased. The length of the anchor nail 6 extending into the ground polymer concrete substrate 1 should not be less than 100mm.

[0044] The prefabrication process of this utility model road slab is as follows:

[0045] Erect steel formwork using high-strength combined steel formwork (thickness ≥ 5mm), assembled according to design dimensions (4000mm×4000mm×400mm or 2000mm×1500mm×400mm). Add a channel steel back rib every 800mm on the outside of the formwork, and reinforce it in both directions with Φ20 tie bolts if necessary. Take sealing measures at the joints of the formwork, such as using sealing strips to ensure there is no risk of grout leakage.

[0046] Tie HRB400Φ16@200 double-layer bidirectional steel cage 4. Please refer to the specific reinforcement layout diagram. Figure 9 .

[0047] L50×50×5mm angle steel was welded to the four corners of the template; and the angle steel was then welded to the completed double-layer bidirectional reinforcing cage 4.

[0048] The sleeves are fixed in the set position, including the galvanized steel sleeve 501 with the side lifting through hole 5 and the threaded sleeve 901 with the top lifting hole 9. The sleeves are spot welded to the adjacent main reinforcement bars, and the pipe openings are sealed with tape to prevent concrete from seeping in.

[0049] For pouring polymer concrete: adopt a layered pouring method, with each layer ≤200mm thick, and distribute the concrete evenly from the center of the formwork outwards. Continuous operation time ≤2 hours to avoid initial setting cold joints.

[0050] After compaction, steam curing is performed for 18 hours. A Φ50 immersion vibrator is used, which is inserted quickly and withdrawn slowly (spacing ≤400mm), and each point is vibrated for 20-30 seconds until the surface is covered with slurry and no air bubbles are visible.

[0051] Remove the formwork and weld the composite anti-slip steel plate 2 on the top surface (fully welded and fixed): After the concrete strength is ≥15MPa (tested with test blocks under the same conditions), remove the side formwork and gently tap the formwork to avoid damage to the edges and corners (if the composite anti-slip steel plate 2 is fixed with anchor nails 6, it must be fixed before the concrete is completely hardened).

[0052] Angle steel and exposed surfaces are coated with anti-rust paint.

[0053] Based on the above, this utility model provides the following two methods for splicing road panels:

[0054] Example 1:

[0055] Please see Figure 5 Tenons 10 are provided on one long side and one short side of the precast concrete substrate 1, and grooves 11 are provided on the other long side and the other short side. The tenons 10 of the adjacent modular prefabricated rapid emergency road slabs are fitted with the grooves 11 with clearance.

[0056] During on-site assembly, the tenon 10 of one road slab is inserted into the groove 11 of the adjacent road slab. In this way, all four sides of a road slab are connected by the tenon 10 and the groove 11, which avoids displacement between road slabs and improves the stability of the assembly. An appropriate gap is maintained between the tenon 10 and the groove 11, that is, the cross-section of the tenon 10 is slightly smaller than the cross-sectional area of ​​the groove 11, to ensure that the tenon 10 can be smoothly inserted into the groove 11.

[0057] In this embodiment, the outer wall of the tenon 10 is covered with angle steel, and the upper and lower ends of the angle steel are welded to the edge angle steel 3.

[0058] In this embodiment, the tenon 10 is made of equilateral angle steel overlaid on the side wall of the precast concrete substrate 1. The two ends of the angle steel are welded to the edge angle steel 3 of the road slab. The gap between the angle steel of the tenon 10 and the precast concrete substrate 1 is filled with the same concrete. To improve strength, a joint of the exposed precast concrete substrate 1 can be reserved in the double-layer bidirectional reinforcing cage 4 and welded to the angle steel of the tenon 10. The groove 11 can be formed in one go using a template during pouring, or the angle steel can be pre-embedded during pouring. However, the fixing direction of the angle steel of the groove 11 is opposite to that of the angle steel of the tenon 10, with the apex facing inward, and it is welded to the edge angle steel 3 and the double-layer bidirectional reinforcing cage 4.

[0059] Example 2:

[0060] Please see Figure 6-8 This embodiment also includes a cross connecting plate 8. The four corners of the composite anti-slip steel plate 2 are provided with L-shaped cuts. The part of the top edge angle steel 3 that exposes the L-shaped cuts is provided with bolt connection holes 7. Adjacent modular prefabricated rapid emergency road panels are connected through the cross connecting plate 8 and the bolt connection holes 7.

[0061] In this embodiment, after the four road panels are spliced ​​together, the adjacent L-shaped cuts form a cross shape, which matches the shape of the cross-shaped connecting plate 8. At this time, the cross-shaped connecting plate 8 can be placed into the gap formed by the four L-shaped cuts, and bolts and bolt connection holes 7 are used to connect the cross-shaped connecting plate 8 to the road panels. In this way, the adjacent road panels are fixed together by the cross-shaped connecting plate 8. The setting method of the bolt connection hole 7 is similar to the setting method of the top hoisting hole 9. The specific specifications of the bolt connection hole 7 can be selected according to actual needs.

[0062] The two embodiments described above provide two connection methods: connecting plate connection and tenon groove connection, respectively, to prevent the road panel modules from moving against each other and improve splicing stability. Compared with embodiment 1, embodiment 2 has better connection stability, but the installation process is slightly more complicated. Embodiment 1 is quick to install, but its splicing stability is not as good as that of embodiment 2. Those skilled in the art can select a suitable splicing method according to the site environment.

[0063] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0064] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular, prefabricated, rapid emergency road slab, characterized in that, The precast concrete substrate (1) is a cuboid structure with a composite anti-slip steel plate (2) on its top surface and edging angle steel (3) covering its twelve edges. A double-layer bidirectional steel cage (4) is provided inside the precast concrete substrate (1). The double-layer bidirectional steel cage (4) is welded to the composite anti-slip steel plate (2) and the edging angle steel (3). A side hoisting through hole (5) is provided at the center of the short side and the long side of the side wall of the precast concrete substrate (1). A galvanized steel sleeve (501) is pre-embedded in the side hoisting through hole (5).

2. The modular prefabricated rapid emergency road slab according to claim 1, characterized in that, The composite anti-slip steel plate (2) has anti-slip texture pressed on its top surface and anchor nails (6) welded in an array on its bottom surface. The anchor nails (6) are inserted into the precast concrete substrate (1).

3. The modular prefabricated rapid emergency road slab according to claim 1, characterized in that, The top surface of the modular prefabricated rapid emergency road slab is provided with a top lifting hole (9). The top lifting hole (9) penetrates the composite anti-slip steel plate (2) and extends into the precast concrete substrate (1). A threaded sleeve (901) is pre-embedded in the top lifting hole (9).

4. The modular prefabricated rapid emergency road slab according to claim 1, characterized in that, The precast concrete substrate (1) has tenons (10) on one long side and one short side, and grooves (11) on the other long side and the other short side. The tenons (10) of the adjacent modular prefabricated rapid emergency road slabs are fitted with the grooves (11) with a clearance.

5. A modular prefabricated rapid emergency road slab according to claim 4, characterized in that, The outer wall of the tenon (10) is covered with angle steel, and the upper and lower ends of the angle steel are welded to the edge angle steel (3).

6. A modular prefabricated rapid emergency road slab according to claim 1, characterized in that, It also includes a cross connecting plate (8), and the four corners of the composite anti-slip steel plate (2) are provided with L-shaped cuts. The top edge angle steel (3) is provided with bolt connection holes (7) at the part of the L-shaped cuts. Adjacent modular prefabricated rapid emergency road panels are connected through the cross connecting plate (8) and the bolt connection holes (7).

7. A modular prefabricated rapid emergency road slab according to any one of claims 1-6, characterized in that, The dimensions of the precast polymer concrete substrate (1) are 2000mm×1500mm×400mm or 4000mm×4000mm×400mm.

8. A modular prefabricated rapid emergency road slab according to any one of claims 1-6, characterized in that, The edge-sealing angle steel (3) is an L50×50×5mm equal-sided angle steel.

9. A modular prefabricated rapid emergency road slab according to any one of claims 1-6, characterized in that, The composite anti-slip steel plate (2) has a thickness of 3mm to 5mm and anti-slip texture is pressed on the top surface.

10. A modular prefabricated rapid emergency road slab according to any one of claims 1-6, characterized in that, The diameter of the side hoisting through hole (5) is 50mm, and the diameter of the top hoisting hole (9) is 22mm.

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