A highway phosphogypsum formwork

Abstract

The utility model discloses a highway is with phosphorus gypsum and is free from dismantling formwork, including a plurality of hollow cavity's phosphorus gypsum formwork unit, and adjacent phosphorus gypsum formhouse unit is connected together through the connecting unit, the phosphorus gypsum formhouse unit is including spliced shell, spliced shell bottom reserved avoidance groove, top detachable connection has the apron, the utility model discloses simple structure, when making concrete guardrail, through highway is with phosphorus gypsum and is free from dismantling formwork to replace traditional steel formwork, plastic formwork, can directly with concrete guardrail form unified whole, and the guardrail is covered in formwork inside, provides a permanent isolation layer for guardrail to avoid salt fog environment and guardrail direct contact, greatly prolongs the service life of guardrail, and highway is with phosphorus gypsum and is free from dismantling formwork and adopts splicing structure to make, and simplifies processing technology, and processing efficiency is high, and the period is short, not only greatly improves the utilization of phosphorus gypsum, and the manufacturing cost is low, has good economic practicality.

Description

Technical Field

[0001] This utility model relates to a phosphogypsum template for highways that does not require disassembly, and belongs to the field of guardrail technology. Background Technology

[0002] Guardrails, as important safety protection facilities, are widely used in highways, bridges, municipal engineering, industrial plants, and coastal buildings. Their main functions are to provide safety isolation, collision buffering, and directional warnings. The long-term durability and structural integrity of guardrails are directly related to public safety and the operation and maintenance costs of infrastructure.

[0003] However, guardrails operating in specific environments face severe challenges to their lifespan. Salt spray is considered one of the most significant environmental factors leading to the degradation of metal structural materials. Salt spray environments are primarily found along coastlines, on offshore platforms, and in northern road areas where de-icing salt is sprayed in winter. This environment is rich in salts such as sodium chloride and magnesium chloride, and its corrosiveness is far stronger than that of ordinary atmospheric environments. Its destructive effects are mainly manifested in: For metal railings: Chloride ions have a strong penetrating ability, damaging the protective layer on the railing surface. They can penetrate these layers and directly contact the internal metal substrate. Chloride ions are also highly hygroscopic, forming a conductive electrolyte film on the metal surface, which greatly accelerates the electrochemical corrosion process.

[0004] For concrete guardrails: Unlike metal guardrails, concrete guardrails do not directly experience electrochemical corrosion, but salt spray environments are still one of the main threats to their durability, with a more insidious and penetrating destructive process. Moisture and salt in the salt spray seep into the pores of the concrete. When freezing occurs at low temperatures, the freezing point of the salt solution in the pores decreases, but the expansion pressure generated after freezing is greater than that of pure water, exacerbating freeze-thaw spalling and cracking of the concrete and creating more channels for chloride ion intrusion. Simultaneously, after the water evaporates, the salt solution that has seeped into the concrete precipitates salt crystals. The accumulation and growth of these crystals in the pores generates enormous crystallization pressure, which can burst the concrete surface, leading to powdering and spalling.

[0005] Currently, the protective methods of guardrails on the market mainly rely on the selection of base materials and surface treatment technology, but both have obvious shortcomings in harsh salt spray environments: Metal railings: Usually, a coating is added to the surface, such as a common zinc plating layer, Al2O3 oxide film, passivation film for corrosion protection, etc. However, Cl⁻ has a pitting corrosion effect on the coating. Cl⁻ can induce severe local corrosion, which is far more harmful than uniform corrosion.

[0006] Concrete railings: These typically involve a combination of measures, such as improving concrete performance (using high-durability concrete) and using corrosion-resistant steel reinforcement. However, these measures only slow down the rate of damage and do not completely prevent corrosion, thus affecting the railing's lifespan and increasing construction costs. Utility Model Content

[0007] Therefore, the purpose of this utility model is to provide a phosphogypsum formwork for highways that does not require dismantling, so as to at least solve the problems mentioned in the background art.

[0008] The objective of this utility model is achieved through the following technical solution: A phosphogypsum mold for highways that does not require disassembly includes several phosphogypsum mold shell units with hollow cavities, and adjacent phosphogypsum mold shell units are connected together by connecting units; the phosphogypsum mold shell unit includes a spliced ​​shell, the bottom of the spliced ​​shell is reserved with a clearance groove, and the top is detachably connected with a cover plate.

[0009] Furthermore, the modular housing includes a left housing composed of multiple left side panels and a right housing composed of multiple right side panels.

[0010] Furthermore, the left shell includes an L-shaped left bottom plate, a left middle side plate, and a left top plate arranged sequentially from bottom to top, and the right shell includes a right bottom plate, a right middle side plate, and a right top plate arranged sequentially from bottom to top; the L-shaped left bottom plate, the left middle side plate, and the left top plate, as well as the right bottom plate, the right middle side plate, and the right top plate, are all interconnected by spherical self-locking structures.

[0011] Furthermore, the cover plate is provided with a first locking structure on both sides, and a second locking structure adapted thereto is provided at the upper end of the left top plate and the right top plate, so that the cover plate is fastened to the left top plate and the right top plate by a self-locking elastic lock.

[0012] Furthermore, at least two sets of through connecting holes are provided on the L-shaped left and right bottom plates, so that the L-shaped left and right bottom plates are connected together by connecting screws inserted into the connecting holes.

[0013] Furthermore, the left shell, right shell, and cover plate are all hollow double-layer thin-walled structures, with grid ribs arranged inside the double-layer thin walls.

[0014] Furthermore, the connecting unit includes a central connecting sleeve for connecting the intermediate phosphogypsum mold shell unit. The central connecting sleeve has a through groove in the middle that is the same as the hollow cavity of the phosphogypsum mold shell unit. Several connecting ribs are provided in the through groove. Both sides of the through groove have slots that are adapted to the contour of the phosphogypsum mold shell unit. Adjacent phosphogypsum mold shell units are fastened together in the slots.

[0015] Furthermore, a sealing plate for sealing the hollow cavity of the phosphogypsum mold shell unit is provided on the outside of the two ends of the phosphogypsum mold shell unit. The sealing plate is provided with a slot on the side of the phosphogypsum mold shell unit, so that the sealing plate is snapped onto the outside of the phosphogypsum mold shell unit through the slot.

[0016] Furthermore, it also includes a guardrail body, which is externally provided with phosphogypsum mold shell units that are interconnected by connecting units.

[0017] Furthermore, the guardrail body is a cast-in-place concrete structure set within the hollow cavity of the phosphogypsum mold unit.

[0018] Compared with the prior art, the beneficial effects of this utility model are: (1) The structure of this utility model is simple. When making concrete guardrails, the highway phosphogypsum non-removable template replaces the traditional steel template and plastic template. It can directly form a unified whole with the concrete guardrail, covering the guardrail inside the template and providing a permanent isolation layer for the guardrail to avoid direct contact between the salt spray environment and the guardrail, thus greatly extending the service life of the guardrail. (2) The highway phosphogypsum template is made of splicing structure, which simplifies the processing technology, has high processing efficiency and short cycle, which not only greatly improves the utilization rate of phosphogypsum, but also has low manufacturing cost and good economic practicality. (3) The highway phosphogypsum template has high strength and reliability. After concrete is poured into the mold cavity and formed by bearing and deformation tests, the template will not deform and there will be no damage to the connection points and mortise and tenon structures.

[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein: Figure 1 A schematic diagram of the structure of a highway phosphogypsum no-removal formwork provided in an embodiment of this utility model. Figure 1 ; Figure 2 A schematic diagram of the structure of a highway phosphogypsum no-removal formwork provided in an embodiment of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the three-dimensional structure of a phosphogypsum mold shell unit; Figure 4 This is a schematic diagram of the front structure of the phosphogypsum mold shell unit; Figure 5 for Figure 4 Enlarged view of part A in the middle; Figure 6 for Figure 4 Enlarged view of part B in the middle section; Figure 7 for Figure 6 A schematic diagram of the decomposition state; Figure 8 This is a three-dimensional structural diagram of the central connecting sleeve; Figure 9 This is a cross-sectional schematic diagram of the central connecting sleeve; Figure 10 This is a cross-sectional view of the middle connecting sleeve in its installed state.

[0021] In the diagram: 1. Cover plate; 2. L-shaped left bottom plate; 3. Left middle side plate; 4. Left top plate; 5. Spherical self-locking structure; 6. Right bottom plate; 7. Right middle side plate; 8. Right top plate; 9. Self-locking elastic buckle; 10. Connecting screw; 11. Middle connecting sleeve; 1101. Through groove; 1102. Slot; 1103. Connecting rib; 12. Sealing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] like Figures 1-10 As shown, the first embodiment of this utility model provides a phosphogypsum template for highways that does not require disassembly, comprising several phosphogypsum mold shell units with hollow cavities, and adjacent phosphogypsum mold shell units are connected together by connecting units.

[0024] The phosphogypsum mold unit includes a modular shell with a pre-reserved clearance groove at the bottom and a detachable cover plate 1 at the top.

[0025] The modular housing includes a left housing composed of multiple left side panels and a right housing composed of multiple right side panels.

[0026] The left shell includes an L-shaped left bottom plate 2, a left middle side plate 3, and a left top plate 4 arranged sequentially from bottom to top. The L-shaped left bottom plate 2, left middle side plate 3, and left top plate 4 are interconnected by spherical self-locking structures 5. Specifically, a matching slot-spherical pin structure is provided at the upper end of the L-shaped left bottom plate 2, the upper and lower ends of the left middle side plate 3, and the lower end of the left top plate 4. The spherical pin is inserted into the slot, connecting the upper end of the L-shaped left bottom plate 2 to the lower end of the left middle side plate 3, and the upper end of the left middle side plate 3 to the lower end of the left top plate 4. The right shell includes a right bottom plate 6, a right middle side plate 7, and a right top plate 8 arranged sequentially from bottom to top. The connection structure of the right shell is the same as that of the left shell, and the right bottom plate 6, right middle side plate 7, and right top plate 8 are interconnected by spherical self-locking structures 5. Specifically, a matching slot-spherical pin structure is provided at the upper end of the right bottom plate 6, the upper and lower ends of the right middle side plate 7, and the lower end of the right top plate 8. The spherical pins are inserted into the slots, connecting the upper end of the right bottom plate 6 to the lower end of the right middle side plate 7, and the upper end of the right middle side plate 7 to the lower end of the right top plate 8. The bottom of the left shell is an inwardly bent L-shaped left bottom plate 2, and the bottom of the right shell is an outwardly inclined curved plate. This simplifies the manufacturing process and increases the stability of the overall structure.

[0027] The cover plate 1 is provided with a first locking structure on both sides, and the upper ends of the left top plate 4 and the right top plate 8 are provided with a second locking structure adapted to it, so that the cover plate 1 is fastened to the left top plate 4 and the right top plate 8 by a self-locking elastic lock 9.

[0028] At least two sets of through-holes are provided on the L-shaped left bottom plate 2 and right bottom plate 6, so that the L-shaped left bottom plate 2 and right bottom plate 6 are connected together by connecting screws 10 inserted into the connecting holes. This structure allows the upper part of the phosphogypsum mold shell unit to be limited by the cover plate 2 and the lower part to be limited by the connecting screws 10, resulting in better connection reliability.

[0029] The left shell, right shell, and cover plate 1 are all hollow double-layer thin-walled structures. The layer thickness of the hollow double-layer thin-walled structure is 15-20mm, and the thin-wall thickness is 2.5-3mm. Specifically, the hollow double-layer thin-walled structure is integrally formed through a plasticizing process, and grid ribs are provided inside the double-layer thin walls to improve the strength of the phosphogypsum template.

[0030] The connecting unit includes several central connecting sleeves 11 for connecting intermediate phosphogypsum mold shell units. The central connecting sleeve 11 has a through groove 1101 in the middle that is the same as the hollow cavity of the phosphogypsum mold shell unit. Both sides of the through groove 1101 have slots 1102 that are adapted to the contour of the phosphogypsum mold shell unit. Adjacent phosphogypsum mold shell units are fastened together in the slots 1102.

[0031] A sealing plate 12 for sealing the hollow cavity of the phosphogypsum mold shell unit is provided on the outside of the two ends of the phosphogypsum mold shell unit; the sealing plate 12 is provided with a slot on the side near the phosphogypsum mold shell unit, so that the sealing plate 12 is snapped onto the outside of the phosphogypsum mold shell unit through the slot, thereby sealing the end of the phosphogypsum mold shell unit.

[0032] A number of connecting ribs 1103 are provided in the through groove 1101 in the middle of the middle connecting sleeve 11 to increase the structural strength of the middle connecting sleeve 11.

[0033] Both the central connecting sleeve 11 and the sealing plate 12 are designed as an external covering structure with a wall thickness of 2.5-3mm and a width of 100-110mm. The connecting ribs 1103 are arranged in three layers, with two symmetrical connecting ribs 1103 arranged on both sides of the edge of the through groove 1101 in each layer. The thickness of the connecting ribs 1103 is 2-2.5mm.

[0034] It also includes the guardrail body, on which the aforementioned phosphogypsum mold shell units, which are interconnected by connecting units, are provided.

[0035] The guardrail body is a cast-in-place concrete structure set in the hollow cavity of the phosphogypsum mold unit.

[0036] Working principle and process of the device: (1) According to the shape of the guardrail, the cover plate 1, L-shaped left bottom plate 2, left middle side plate 3, left top plate 4, right bottom plate 6, right middle side plate 7, and right top plate 8 of the phosphogypsum mold shell unit are made by plasticizing process. The phosphogypsum mold shell unit is designed as an assembly structure, which can simplify the processing process, reduce manufacturing cost, and facilitate operation. (2) The L-shaped left bottom plate 2, left middle side plate 3 and left top plate 4, right bottom plate 6, right middle side plate 7 and right top plate 8 are connected by a spherical self-locking structure 5 to form a left shell and a right shell, and the left shell and right shell are connected by a connecting screw 10 to form a spliced ​​shell; (3) Several spliced ​​shells are assembled by the middle connecting sleeve 11, and at the same time, the sealing plates 12 are installed on the outside of the spliced ​​shells at both ends, so that the hollow cavity inside the assembled spliced ​​shell forms a connected and relatively sealed filling cavity. (4) Pour concrete into the filling cavity; (5) Connect the cover plate 1, the left top plate 4, and the right top plate 8 with the self-locking elastic buckle 9 so that the highway phosphogypsum formwork and the concrete guardrail can form an integral structure.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to restrict the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present utility model and based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A phosphogypsum formwork for highways that requires no dismantling, characterized in that, It includes several phosphogypsum mold shell units with hollow cavities, and adjacent phosphogypsum mold shell units are connected together by connecting units; the phosphogypsum mold shell unit includes a spliced ​​shell, the bottom of the spliced ​​shell is reserved with a relief groove, and the top is detachably connected with a cover plate (1). The modular housing includes a left housing composed of multiple left side panels and a right housing composed of multiple right side panels; The left shell includes an L-shaped left bottom plate (2), a left middle side plate (3) and a left top plate (4) arranged sequentially from bottom to top. The right shell includes a right bottom plate (6), a right middle side plate (7) and a right top plate (8) arranged sequentially from bottom to top. The L-shaped left bottom plate (2), the left middle side plate (3) and the left top plate (4), and the right bottom plate (6), the right middle side plate (7) and the right top plate (8) are all connected to each other by a spherical self-locking structure (5).

2. The highway phosphogypsum non-removable formwork according to claim 1, characterized in that, The cover plate (1) is provided with a first locking structure on both sides, and the upper ends of the left top plate (4) and the right top plate (8) are provided with a second locking structure adapted to it, so that the cover plate (1) is fastened to the left top plate (4) and the right top plate (8) by a self-locking elastic lock (9).

3. The highway phosphogypsum non-removable formwork according to claim 2, characterized in that, At least two sets of through connecting holes are provided on the L-shaped left bottom plate (2) and right bottom plate (6) so that the L-shaped left bottom plate (2) and right bottom plate (6) are connected together by connecting screws (10) inserted in the connecting holes.

4. The highway phosphogypsum non-removable formwork according to claim 3, characterized in that, The left shell, right shell and cover plate (1) are all hollow double-layer thin-walled structures, and grid ribs are provided inside the double-layer thin walls.

5. The highway phosphogypsum non-removable formwork according to claim 1, characterized in that, The connecting unit includes a central connecting sleeve (11) for connecting the intermediate phosphogypsum mold shell unit. The central connecting sleeve (11) has a through groove (1101) in the middle that is the same as the hollow cavity of the phosphogypsum mold shell unit. The through groove (1101) has a number of connecting ribs (1103). Both sides of the edge of the through groove (1101) have slots (1102) that are adapted to the outline of the phosphogypsum mold shell unit. Adjacent phosphogypsum mold shell units are fastened together in the slots (1102).

6. The highway phosphogypsum non-removable formwork according to claim 5, characterized in that, A sealing plate (12) for sealing the hollow cavity of the phosphogypsum mold shell unit is provided on the outside of the phosphogypsum mold shell unit at both ends. The sealing plate (12) is provided with a slot on the side close to the phosphogypsum mold shell unit so that the sealing plate (12) is snapped onto the outside of the phosphogypsum mold shell unit through the slot.

7. The highway phosphogypsum non-removable formwork according to any one of claims 1-6, characterized in that, It also includes the guardrail body, which is externally provided with phosphogypsum mold shell units that are interconnected by connecting units.

8. The phosphogypsum formwork for highways that does not require dismantling, as described in claim 7, is characterized in that... The guardrail body is a cast-in-place concrete structure set in the hollow cavity of the phosphogypsum mold unit.

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