Fabricated protective barrier for edge protection of roller compacted concrete dam bin face

Abstract

The utility model discloses an assembly type protective barrier for edge protection of a roller compacted concrete dam bin face, which comprises poured roller compacted concrete and roller compacted concrete to be poured in a dam body of a dam, two sides of the roller compacted concrete to be poured are provided with turning and lifting steel formworks, the bottoms of the turning and lifting steel formworks are fixed with the dam body, and the bottom of the turning and lifting steel formworks is fixed with the dam body. The inner side of the turning and lifting formwork is fixed through diagonal draw bars, an assembly type protective fence is arranged above the turning and lifting steel formwork and arranged along roller compacted concrete to be poured, the turning and lifting steel formwork comprises fixing rods arranged on the two sides in parallel, the fixing rods on the inner side are provided with supporting steel plates making contact with the concrete, and the supporting steel plates are arranged on the fixing rods on the outer side of the turning and lifting steel formwork. A plurality of inclined reinforcing beams are arranged between the fixing rods on the two sides; according to the assembly type protective barrier for edge protection of the roller compacted concrete dam bin face, the high-altitude edge operation risk can be eliminated on the dam bin face, the overall structure is stable, assembly is convenient, manual vibration can be assisted through the protective barrier, the physical strength of workers can be saved, and the assembly type protective barrier is suitable for application and popularization.

Description

Technical Field

[0001] This utility model relates to the field of dam construction technology, and in particular to a prefabricated protective railing for edge protection of roller-compacted concrete dam surfaces. Background Technology

[0002] During dam construction, the elevation of the concrete pouring surface increases with each pour, increasing the risk of workers operating at heights, especially during the construction of modified concrete upstream and downstream of the dam, which requires manual vibration and poses significant safety hazards. Since each layer of roller-compacted concrete is poured to a height of approximately 3 meters, and each layer of the upstream and downstream formwork is also installed to a height of 3 meters, the upstream and downstream formwork initially serves as a safety barrier to ensure the safety of workers within the pouring area. However, as the pouring height increases to 1.8 meters, the effective height of the formwork top from the pouring surface becomes less than 1.2 meters. Relevant regulations require that the height of general safety guardrails should not be less than 1.2 meters, necessitating the installation of safety protection measures on the pouring surface.

[0003] Traditional roller-compacted concrete dam face safety protection technology requires pausing work midway through pouring (after a height of 1.8m) to install protective facilities on the upstream and downstream surfaces of the dam, without encroaching on the concrete pouring area. The guardrails need to be installed on the formwork or installed by inserting reinforcing bars into the formwork, which seriously affects the continuity of construction. In addition, conventional guardrails are difficult to adapt to the vertical and inclined surfaces of the dam formwork, and cannot assist in manual vibration at the edges, resulting in unsatisfactory performance. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned problems by providing a prefabricated guardrail for edge protection of roller-compacted concrete dam surfaces. This guardrail can eliminate the risks of high-altitude edge operations on dam surfaces, has a stable overall structure, is easy to assemble, and can also assist in manual vibration, thus saving manpower.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a prefabricated guardrail for edge protection of roller-compacted concrete dam face, comprising roller-compacted concrete already poured in the dam body and roller-compacted concrete to be poured, wherein lifting steel formwork is provided on both sides of the roller-compacted concrete to be poured, the bottom of the lifting steel formwork is fixed to the dam body, the inner side of the lifting formwork is fixed by diagonal tie rods, and a prefabricated guardrail is provided above the lifting steel formwork, the guardrail being set along the roller-compacted concrete to be poured.

[0006] Preferably, the lifting steel formwork includes fixed rods arranged in parallel on both sides, a support steel plate in contact with the concrete is provided on the inner fixed rod, and a plurality of inclined reinforcing beams are provided between the two fixed rods. An operating platform and a ladder are provided below the reinforcing beams.

[0007] Preferably, the lifting steel formwork is provided with a horizontally penetrating crawling cone. One end of the crawling cone extends outward and is fixed by a locking bolt, while the other end extends inward through the support steel plate and is welded with a threaded steel bar. One end of the diagonal tie rod is welded to the threaded steel bar, and the other end is welded and fixed to the pre-embedded steel bar. The pre-embedded steel bar is located in the poured and compacted concrete.

[0008] Preferably, the top and bottom of the tilting steel formwork are provided with connecting ear plates for splicing, and the connecting ear plates are provided with multiple mounting holes; when two adjacent tilting steel formworks are spliced, one side is fixedly connected at the mounting hole by bolts, and the other side is fixedly connected by tilting adjustment components.

[0009] Preferably, the lifting adjustment component includes a threaded rod with reverse threads at both ends and threaded sleeves that mate with the reverse threads at both ends. The end of the threaded sleeve is provided with a connecting lug plate, which mates with two upper and lower lifting steel templates. The circumference of the threaded rod is also provided with symmetrically arranged rotating handles. When the threaded rod is rotated by the rotating wrench, the two adjacent upper and lower lifting steel templates move closer to or further away from each other.

[0010] Preferably, the guardrail includes multiple parallel horizontal bars and vertical bars, the vertical bars being fixed to the rear of the horizontal bars by semi-circular hoops, and the bottom of the vertical bars being provided with multiple first-hole flat irons and second-hole flat irons.

[0011] Preferably, the lowest crossbar is provided with a strip-shaped slide, a sliding assembly is provided in the strip-shaped slide, a vibrator is provided below the sliding assembly, the rod of the vibrator extends upward through the sliding assembly, and the vibrator and the rod can move along the crossbar through the sliding assembly.

[0012] Preferably, the sliding assembly includes two I-shaped sliding seats, which are arranged opposite to each other. The opposite sides of the sliding seats are provided with semi-circular slots. Rollers are provided on the outside of the sliding seats. The inner wall of the strip-shaped slide is provided with a groove that cooperates with the rollers. Multiple tension springs are provided between the two sliding seats. The rod tube of the vibrator is clamped in the two semi-circular slots by the tension springs.

[0013] Preferably, the sliding assembly further includes an adjustment assembly, which includes two sets of hinge rods, each set consisting of two symmetrical hinge rods. One end of each set of hinge rods is hinged to the adjustment pressure rod, and the other end is hinged to the outer wall of the sliding seat.

[0014] This utility model discloses a prefabricated guardrail for edge protection of roller-compacted concrete dam surfaces. It includes roller-compacted concrete already poured and roller-compacted concrete to be poured in the dam body. Tilting steel formwork is installed on both sides of the roller-compacted concrete to be poured. The bottom of the tilting steel formwork is fixed to the dam body, and the inner side of the tilting formwork is fixed by diagonal braces. A prefabricated guardrail is installed above the tilting steel formwork, and the guardrail is set along the roller-compacted concrete to be poured. The tilting steel formwork includes parallel fixing rods on both sides, with a support steel plate in contact with the concrete on the inner fixing rod. Multiple inclined reinforcing beams are provided between the two fixing rods. Compared with the prior art, this prefabricated guardrail for edge protection of roller-compacted concrete dam surfaces can eliminate the risk of high-altitude edge work on the dam surface, has a stable overall structure, is easy to assemble, and the guardrail can also assist manual vibration, which is beneficial in saving manpower. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of a prefabricated protective railing for edge protection of roller-compacted concrete dam surfaces according to the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of a lifting steel formwork in a prefabricated guardrail for edge protection of a roller-compacted concrete dam. Figure 1 .

[0017] Figure 3 This is a schematic diagram of the structure of a lifting steel formwork in a prefabricated guardrail for edge protection of a roller-compacted concrete dam. Figure 2 .

[0018] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0019] Figure 5 This utility model Figure 2 A magnified structural diagram at point B in the middle.

[0020] Figure 6 This is a schematic diagram of the lifting and adjusting component in a prefabricated guardrail for edge protection of roller-compacted concrete dam surfaces according to the present invention.

[0021] Figure 7 This is a schematic diagram of the structure of the guardrail in this utility model. Figure 1 .

[0022] Figure 8 This is a schematic diagram of the structure of the guardrail in this utility model. Figure 2 .

[0023] Figure 9 This is a schematic diagram of the structure of the bottom horizontal bar in this utility model.

[0024] Figure 10 This is a schematic diagram of the sliding component in this utility model. Figure 1 .

[0025] Figure 11 This is a schematic diagram of the sliding component in this utility model. Figure 2 .

[0026] Figure 12 This is a schematic diagram of the adjustment component in this utility model.

[0027] In the diagram: 1. Roller-compacted concrete already poured; 2. Roller-compacted concrete to be poured; 3. Lifting steel formwork; 31. Fixing rod; 311. Connecting ear plate one; 312. Mounting hole; 32. Support steel plate; 33. Reinforcing beam; 34. Operating platform; 35. Ladder; 36. Climbing cone; 37. Locking bolt; 38. Threaded steel bar; 4. Lifting adjustment component; 41. Threaded rod; 42. Threaded sleeve; 43. Connecting ear plate two; 5. Embedded steel bar; 6. Diagonal tie rod; 7. Guardrail; 71. Horizontal bar; 711. First perforated flat iron; 712. Second perforated flat iron; 713. Strip slide; 72. Upright pole; 73. Semicircular bend hoop; 8. Vibrator; 9. Sliding assembly; 91. Sliding seat; 92. Semicircular slot; 93. Roller; 94. Hinge rod; 95. Adjusting pressure rod; 96. Tension spring. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] Please refer to Figure 1-12 A prefabricated guardrail for edge protection of roller-compacted concrete dam face includes roller-compacted concrete 1 already poured in the dam body and roller-compacted concrete 2 to be poured. Tilting steel formwork 3 is provided on both sides of the roller-compacted concrete 2 to be poured. The bottom of the tilting steel formwork 3 is fixed to the dam body or fixed by external support. The inner side of the tilting formwork 3 is fixed by diagonal tie rods 6. A prefabricated guardrail 7 is provided above the tilting steel formwork 3, and the guardrail 7 is set along the roller-compacted concrete 2 to be poured.

[0030] During construction, concrete is poured into the roller-compacted concrete to be poured, and the surrounding area is supported by lifting steel formwork. As the dam elevation gradually increases, construction workers are prone to working at heights during the construction process on the surface. The installation of guardrail 7 can eliminate the risk of working at heights near the edge.

[0031] In this embodiment, the lifting steel formwork 3 includes fixed rods 31 arranged in parallel on both sides, a support steel plate 32 in contact with concrete is provided on the inner fixed rod 31, and a plurality of inclined reinforcing beams 33 are provided between the two fixed rods 31. An operating platform 34 and a ladder 35 are provided below the reinforcing beams 33.

[0032] The lifting steel formwork 3 is provided with a horizontally penetrating crawling cone 36. One end of the crawling cone 36 extends outward and is fixed by a locking bolt 37, while the other end extends inward through the support steel plate 32 and is welded with a threaded steel bar 38. One end of the diagonal tie rod 6 is welded to the threaded steel bar 38, and the other end is welded and fixed to the pre-embedded steel bar 5, which is located within the poured roller-compacted concrete 1. The top and bottom of the lifting steel formwork 3 are provided with splicing connecting ear plates 311, which have multiple mounting holes 312. When two adjacent lifting steel formworks 3 are spliced, one side is fixedly connected at the mounting hole 312 by bolts, and the other side is fixedly connected by the lifting adjustment component 4.

[0033] In other words, the outer side of the tilting steel formwork 3 is fixed by the tilting adjustment piece 4 and the tilting steel formwork 3 below, while the inner side is supported and fixed by the diagonal tie rod 6. Since the dam foundation has a vertical surface and an inclined surface, the tilting steel formwork 3 on the vertical surface is set vertically, and the tilting steel formwork 3 on the inclined surface is set against the inclined surface. Regardless of whether it is an inclined surface or a vertical surface, the diagonal tie rod can support and fix the tilting steel formwork 3. When pouring concrete, as the concrete is continuously poured, the diagonal tie rod 6 can also hold the tilting steel formwork 3 on both sides to prevent the tilting steel formwork 3 from deforming and loosening.

[0034] In this embodiment, the diagonal tie rod 6 is not removed. When dismantling the lifting steel formwork 3, the end of the diagonal tie rod is cut off. In addition, the pre-embedded steel bar 5 is embedded in the poured roller-compacted concrete in advance.

[0035] Furthermore, the lifting adjustment component 4 includes a threaded rod 41, with reverse threads at both ends of the threaded rod 41, meaning the threads at both ends of the threaded rod 41 are arranged in opposite directions. Threaded sleeves 42 that mate with the reverse threads are located at both ends of the threaded rod 41. Connecting lugs 43 are located at the ends of the threaded sleeves 42, and these connecting lugs 43 mate with the upper and lower lifting steel templates 3. Additionally, symmetrically arranged rotating handles are located on the circumference of the threaded rod 41. In use, the connecting lugs 43 at both ends are first fixedly connected to the upper and lower lifting steel templates 3. Then, the threaded rod 41 is rotated. Because the threads at both ends of the threaded rod 41 are arranged in opposite directions, when the threaded rod rotates, the two adjacent upper and lower lifting steel templates move closer or further apart, facilitating the adjustment of the flatness of the support steel plate 32 surface and preventing the upper and lower support steel plates 32 from forming an angle.

[0036] Please refer to it again. Figure 7-9The guardrail 7 includes multiple parallel horizontal bars 71 and vertical bars 72. The vertical bars 72 are fixed to the rear of the horizontal bars 71 by semi-circular bends 73. The bottom of the vertical bars 72 is provided with multiple first-hole flat irons 711 and second-hole flat irons 712. In use, the guardrail 7 as a whole cooperates with the lower lifting steel template 3 through the first-hole flat irons 711 and second-hole flat irons 712, and is fixed by bolts and washers after cooperation.

[0037] Since the guardrail 7 is vertically installed on the lifting steel formwork 3, it does not occupy the area for pouring concrete on the surface of the site, thus avoiding affecting the continuity of construction.

[0038] The bottommost crossbar 71 is provided with a strip-shaped slide rail 713, and a sliding assembly 9 is provided inside the strip-shaped slide rail 713. A vibrator 8 is provided below the sliding assembly 9. The rod tube of the vibrator 8 extends upward through the sliding assembly 9. The vibrator 8 and the rod tube can move along the crossbar 71 through the sliding assembly 9.

[0039] The actual width between the two guardrails 7 is tens of meters. After the concrete is poured, the middle part is compacted by large mechanical vibration (vibrator). However, in actual use, the edge of the concrete slab (near the lifting steel formwork 3) is equipped with many diagonal tie rods 6, which makes it difficult for the vibrator to get close enough to meet the vibration requirements. At this time, manual vibration is required. However, due to the large area of ​​concrete pouring, manual holding of the vibrator for a long time will seriously deplete physical strength and affect the construction progress. In order to save manual labor by pulling the vibrator and the rod, a sliding component 9 is installed in the lower crossbar. When using it, the construction personnel only need to hold the vibrator 8. When it is necessary to move forward or backward, the rod moves with the crossbar through the sliding component, avoiding dragging the rod behind and effectively saving physical strength. Moreover, the whole can be adjusted according to the vibration position to meet the needs of manual vibration.

[0040] Specifically, the sliding assembly 9 includes two I-shaped sliding seats 91, which are arranged opposite to each other. The opposite sides of the sliding seats 91 are provided with semi-circular slots 92. Rollers 93 are provided on the outside of the sliding seats 91. The inner wall of the strip-shaped slide 713 is provided with a groove that cooperates with the rollers. Multiple tension springs 96 are provided between the two sliding seats 91. The rod tube of the vibrator 8 is clamped in the two semi-circular slots 92 by the tension springs 96.

[0041] When in use, the vibrator 8 is first passed upward between the two sliding seats 91. After passing through, the two sliding seats 91 hold the vibrator through the tension of multiple tension springs 96. During vibration, the construction worker holds the vibrator to vibrate the concrete. When it is necessary to move forward to change the vibration position, the worker only needs to pull the vibrator. At this time, the two sliding seats 91 will move along the crossbar 71 through the rollers 93 to achieve the vibration needs at different positions. In other words, most of the weight of the vibrator is protected by the sliding seats, without the need for other workers to assist and support it, thus saving manual labor.

[0042] To facilitate adjustment of the extension length of the vibrator 8, the sliding assembly 9 also includes an adjustment component, please refer to [reference needed]. Figure 12 The adjustment assembly includes two sets of hinge rods 94, one upper and one lower. Each set of hinge rods 94 consists of two symmetrical rods. One end of each set of hinge rods 94 is hinged to the adjusting pressure rod 95, and the other end is hinged to the outer wall of the sliding seat 91.

[0043] In other words, the angle of the hinge rod 94 can be adjusted according to the position of the adjusting rod 95. When the adjusting rod 95 is pressed towards the sliding seat 91, the included angle between the two hinge rods 94 in the same group increases. After the angle increases, it pushes the two sliding seats 91 to move in opposite directions. At this time, the two sliding seats 91 separate. The internal rod tube is not clamped and constrained. At this time, pulling the rod tube can adjust the extension length of the vibrator 8 to meet the vibration at a more distant position. After the position of the rod tube is adjusted, the pressing adjusting rod 95 is released. At this time, the tension of the tension spring 96 makes the included angle between the two hinge rods smaller, and the adjusted rod tube is clamped again.

[0044] Based on the above embodiments, rubber protrusions can also be provided inside the semi-circular slot 92 to increase the constraint force on the rod tube; in addition, the adjustment components can also be symmetrically arranged on both sides of the sliding seat to facilitate smooth separation of the two sliding seats and meet the usage requirements.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A prefabricated guardrail for edge protection of roller-compacted concrete dam surfaces, characterized in that, The dam body includes both pre-poured and unpoured roller-compacted concrete. The unpoured roller-compacted concrete is provided with lifting steel formwork on both sides. The bottom of the lifting steel formwork is fixed to the dam body. The inner side of the lifting steel formwork is fixed by diagonal bracing. A prefabricated guardrail is provided above the lifting steel formwork. The guardrail is set along the unpoured roller-compacted concrete.

2. The prefabricated guardrail for edge protection of roller-compacted concrete dam face according to claim 1, characterized in that, The lifting steel formwork includes parallel fixing rods on both sides, with a support steel plate in contact with the concrete on the inner fixing rod, and multiple inclined reinforcing beams between the two fixing rods. An operating platform and a ladder are provided below the reinforcing beams.

3. The prefabricated guardrail for edge protection of roller-compacted concrete dam face according to claim 2, characterized in that, The lifting steel formwork is equipped with a horizontally penetrating crawling cone. One end of the crawling cone extends outward and is fixed by a locking bolt, while the other end extends inward through the support steel plate and is welded with a threaded steel bar. One end of the diagonal tie rod is welded to the threaded steel bar, and the other end is welded and fixed to the pre-embedded steel bar. The pre-embedded steel bar is located in the already poured roller-compacted concrete.

4. The prefabricated guardrail for edge protection of roller-compacted concrete dam surfaces according to any one of claims 1-3, characterized in that, The top and bottom of the tilting steel formwork are provided with connecting ear plates for splicing, and the connecting ear plates are provided with multiple mounting holes; when two adjacent tilting steel formworks are spliced, one side is fixedly connected at the mounting hole by bolts, and the other side is fixedly connected by tilting adjustment components.

5. The prefabricated guardrail for edge protection of roller-compacted concrete dam face according to claim 4, characterized in that, The lifting adjustment component includes a threaded rod with reverse threads at both ends. Threaded sleeves that mate with the reverse threads are located at both ends of the threaded rod. A connecting lug is located at the end of each threaded sleeve. The connecting lug mates with two upper and lower lifting steel templates. A symmetrically arranged rotating handle is also located on the circumference of the threaded rod. When the threaded rod is rotated using the rotating wrench, the two adjacent upper and lower lifting steel templates move closer to or further apart from each other.

6. The prefabricated guardrail for edge protection of roller-compacted concrete dam face according to claim 1, characterized in that, The guardrail includes multiple parallel horizontal bars and vertical bars. The vertical bars are fixed to the back of the horizontal bars by semi-circular hoops. The bottom of the vertical bars is provided with multiple first-hole flat irons and second-hole flat irons.

7. The prefabricated guardrail for edge protection of roller-compacted concrete dam face according to claim 6, characterized in that, The bottom crossbar is provided with a strip-shaped slide rail, and a sliding assembly is provided inside the strip-shaped slide rail. A vibrator is provided below the sliding assembly, and the rod tube of the vibrator extends upward through the sliding assembly. The vibrator and the rod tube can move along the crossbar through the sliding assembly.

8. The prefabricated guardrail for edge protection of roller-compacted concrete dam face according to claim 7, characterized in that, The sliding assembly includes two I-shaped sliding seats, which are arranged opposite each other. The opposite sides of the sliding seats are provided with semi-circular slots. Rollers are provided on the outside of the sliding seats. The inner wall of the strip-shaped slide is provided with a groove that cooperates with the rollers. Multiple tension springs are provided between the two sliding seats. The rod tube of the vibrator is clamped in the two semi-circular slots by the tension springs.

9. The prefabricated guardrail for edge protection of roller-compacted concrete dam face according to claim 8, characterized in that, The sliding assembly also includes an adjustment assembly, which includes two sets of hinge rods, one at each set and the other at the other.

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