A kind of pitched roof concrete pouring anti-sliding construction system and method

Abstract

The application discloses a kind of slope roof concrete pouring anti-sliding construction system and method, belong to building construction technical field.The system includes anti-sliding formwork and adjustable temporary interception structure;Anti-sliding formwork is laid on the surface of slope roof, and roof slab reinforcement is tied on it;Adjustable temporary interception system is set on roof slab reinforcement, including the main rod with vibration motor inside, the multiple adjustable pusher components slidably sleeved on the main rod and the support adjusting assembly arranged at the both ends of the main rod.During construction, multiple interception structures are arranged along the slope to divide the roof into multiple pouring bins, and the concrete is poured in layers.The interception structure is pulled out before initial setting, and the vibration motor is started to compact the gap.The application prevents sliding by anti-sliding formwork, prevents sliding and falling by pusher interception, and eliminates gaps by vibration compaction, effectively solving the problems of sliding and segregation during pouring of high-slump concrete with large slope, and improving construction quality and efficiency.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a construction system and method for preventing slippage during concrete pouring on pitched roofs. Background Technology

[0002] Sloping roofs are widely used in construction projects due to their excellent drainage performance and architectural aesthetics. However, the concrete pouring construction of sloping roofs has always been a technical challenge in building construction.

[0003] Traditional concrete construction for pitched roofs has the following problems:

[0004] (a) Concrete slippage. When the roof slope exceeds 15°, the newly poured concrete is prone to slide down the surface of the formwork under its own weight, resulting in uneven thickness of the concrete panel and seriously affecting the structural stress performance and roof waterproofing effect.

[0005] (ii) Segregation. During the flow of concrete on a slope, the aggregate and paste are prone to separate, resulting in segregation, which affects the strength and durability of the concrete structure.

[0006] (iii) Low forming accuracy. Manual vibration is difficult to control, resulting in poor surface smoothness of concrete and requiring a lot of post-construction repair work.

[0007] (iv) Low construction efficiency. Traditional methods require multiple repairs, resulting in long construction periods and high costs.

[0008] To address the aforementioned issues, Chinese patent application (publication number: CN120139503A) discloses a construction process for pouring concrete on a steeply sloping curved roof, which achieves segmented pouring by arranging intercepting plates on the sloping roof surface; Chinese patent application (publication number: CN217461235U) discloses an anti-segregation device for pouring concrete on a large-angle sloping roof, which seals the pouring port by splicing templates and sliding baffles; and Chinese patent application (publication number: CN119981452A) discloses a construction process for pouring concrete on a sloping roof, which achieves slab surface leveling and segmented pouring by setting steel guide rails and steel wire intercepting mesh on the beam and slab reinforcement.

[0009] However, the existing technologies still have the following shortcomings: the positions of the intercepting plates or nets are fixed and cannot be dynamically adjusted according to the actual construction situation; the intercepting devices are inconvenient to install and difficult to adapt to the needs of complex pitched roofs and roofs with large reinforcement; and there is a lack of effective means to treat the gaps formed after the intercepting devices are pulled out, affecting the compactness and waterproof performance of the concrete. Therefore, there is an urgent need for a construction system and method for preventing slippage in pitched roof concrete pouring that can effectively solve the above problems. Summary of the Invention

[0010] The purpose of this invention is to provide a construction system and method for preventing concrete slippage during pitched roof concrete pouring, in order to solve the technical problems in current pitched roof concrete construction, such as easy slippage of concrete along the downhill direction during pouring due to excessive slope, uneven thickness of concrete panels, pouring difficulties, concrete segregation, poor surface flatness after concrete pouring, and low construction efficiency.

[0011] The specific technical solution adopted by this invention is as follows:

[0012] On one hand, the present invention discloses a construction system for preventing slippage during concrete pouring on sloping roofs, comprising: an anti-slip template and an adjustable temporary interception structure;

[0013] The anti-slip template is laid on the surface of the sloping roof, and the roof panel reinforcement is tied to the anti-slip template;

[0014] The adjustable temporary interception structure is installed on the roof panel reinforcement;

[0015] The adjustable temporary interception structure includes a main rod, multiple adjustable lever assemblies, and a support adjustment assembly. The main rod is a hollow rod extending laterally along the sloping roof, with a vibration motor installed inside. The adjustable lever assembly includes a collar slidably fitted onto the outer wall of the main rod and levers fixed to the outer wall of the collar. The levers are used to insert into the gaps in the roof panel reinforcement to form a concrete interception barrier. The support adjustment assembly is located at both ends of the main rod and is used to support the main rod and adjust the height of the main rod relative to the anti-slip template base plate.

[0016] Preferably, the inner wall of the collar slides with the outer wall of the main rod, and the gap between them is no more than 1 mm.

[0017] Preferably, the cross-section of the main rod is elliptical, and the inner hole of the collar is elliptical and adapted to the cross-section of the main rod. The main rod and the collar cooperate to restrict the rotation of the lever around the axis of the main rod.

[0018] Preferably, the anti-slip template is a plywood with a textured surface.

[0019] Preferably, the support adjustment assembly includes a support screw, a sleeve, and a nut. The sleeve is fixedly connected to the lower end of the main rod, the nut is fixedly connected inside the sleeve, and the support screw is threadedly engaged with the nut and supports the surface of the pitched roof.

[0020] On the other hand, the present invention discloses a construction method for preventing slippage during concrete pouring on a pitched roof, characterized by employing the construction system described in any one of claims 1 to 5, the method comprising the following steps: Step S1, installing anti-slip templates: laying anti-slip templates on the surface of the pitched roof according to the designed slope, and checking the slope; Step S2, tying roof panel reinforcement: tying reinforcement bars on the anti-slip templates according to design requirements; Step S3, arranging adjustable temporary interception structures: setting multiple adjustable temporary interception structures at intervals along the slope direction of the pitched roof to divide the pitched roof into multiple pouring chambers; adjusting each of the adjustable lever components so that the levers are inserted and arranged... The adjustable temporary interception structure is placed in the transverse gaps of the roof panel reinforcement; and the height of the adjustable temporary interception structure is adapted to the design thickness of the roof panel by adjusting the support adjustment component; Step S4, pour concrete in layers: pour concrete in layers from the downslope direction of the sloping roof to the upslope direction; Step S5, pull out the interception system: before the concrete has initially set, pull out the adjustable temporary interception structure upwards, and start the vibration motor during the pulling process to vibrate while pulling out, so as to seal the gap formed after the puller is pulled out; Step S6, clean the adjustable temporary interception structure, and repeat steps S3 to S5 to construct the next pouring section.

[0021] Preferably, in step S3, the first adjustable temporary interception structure is installed at a distance of 480-520mm from the bottom eaves or gutter of the sloping roof, and one is installed every 2.5-3.5m along the slope upwards.

[0022] Preferably, in step S4, the concrete is C30 concrete with a slump of 180±20mm; an immersion vibrator is used for compaction, with the vibrator inserted quickly and withdrawn slowly, and the spacing between vibration points not exceeding 400mm.

[0023] Preferably, in step S4, the pouring of each layer of concrete is paused when it reaches the position of the lever, and the next layer is poured after it has been vibrated and compacted.

[0024] Preferably, the slope of the pitched roof is greater than or equal to 15°.

[0025] Compared with the prior art, the present invention has at least one of the following advantages or beneficial effects:

[0026] 1) By using anti-slip templates, this invention increases the friction between the concrete and the template, effectively preventing the concrete from sliding down the slope during the pouring process.

[0027] 2) By setting an adjustable temporary interception structure, the present invention forms a temporary interception barrier during the concrete pouring process, achieving the purpose of one-time molding, and can effectively prevent concrete from sliding down due to large concrete slump.

[0028] 3) The present invention can effectively control the installation height of the temporary interception structure through the support and adjustment structure to adapt to working conditions with different panel thicknesses, further ensuring the compactness of the pitched roof concrete, thereby improving the self-waterproofing performance of the concrete.

[0029] 4) This invention installs a vibration motor inside the main rod of the adjustable temporary interception structure. When the interception system is pulled out, the vibration is activated to compact the gap formed after the paddle is pulled out. This eliminates the quality risks of gaps left after the interception device is pulled out in traditional construction, and effectively improves the density and waterproofing effect of the concrete.

[0030] 5) The present invention effectively restricts the rotation of the lever around the axis of the main rod through the cooperative design of the elliptical main rod and the elliptical collar, ensuring that the lever is always inserted into the gap of the steel bar at the correct angle, thus ensuring a stable and reliable interception effect.

[0031] 6) In this invention, the paddle assembly can be slidably adjusted on the main rod, which can flexibly adapt to working conditions with different rebar spacing. A single main rod can be equipped with 50 to 60 paddle assemblies, making it highly adaptable. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this specification, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention.

[0033] Figure 1 This is a schematic diagram of the anti-slip construction system for concrete pouring on sloping roofs in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of an adjustable temporary interception structure in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the adjustable paddle assembly at one angle in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of another angle of the adjustable paddle assembly in an embodiment of the present invention.

[0037] Figure 5 This is an enlarged schematic diagram of the support adjustment component in an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the internal structure of the main rod in an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the anti-slip template in an embodiment of the present invention;

[0040] Among them, 1. Adjustable temporary interception structure; 101. Main rod; 102. Adjustable lever; 103. Collar; 104. Support screw; 105. Sleeve; 106. Nut; 107. Vibration motor; 108. Limiting rod; 109. Rechargeable battery; 110. Power switch; 2. Anti-slip template; 3. Roof panel reinforcement; 4. Concrete panel after pouring. Detailed Implementation

[0041] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0042] Example 1:

[0043] Please see Figure 1 As shown, the present invention provides a construction system for preventing slippage during concrete pouring on sloping roofs. Specifically, the system includes: an anti-slip template 2 and an adjustable aluminum alloy temporary interception structure 1.

[0044] like Figure 7 As shown, the anti-slip template 2 is a template with a textured surface, made of 18mm thick precast plywood with a textured surface. The anti-slip template 2 is laid on the surface of the sloping roof; its textured surface increases the friction between the concrete and the template, preventing the concrete from sliding down the slope during pouring. Furthermore, the anti-slip template 2 is reinforced with roof panel steel bars 3 as per design requirements.

[0045] like Figure 2 As shown, the adjustable temporary interception structure 1 is made of aluminum alloy and consists of a main rod, multiple adjustable lever assemblies, and a support adjustment assembly. The adjustable aluminum alloy temporary interception structure 1 is installed on the roof slab reinforcement 3. The interception effect is achieved by adjusting the adjustable lever assemblies to fill the gaps between the reinforcement bars. During construction, the number of lever assemblies in each gap is arranged according to the reinforcement bar spacing.

[0046] like Figure 3 and 4 As shown, the adjustable paddle assembly includes an adjustable paddle 102 and a collar 103. The collar 103 is an elliptical aluminum alloy ring with an inner diameter of 51 mm, a wall thickness of 5 mm, and a width of 5 cm; the adjustable paddle 102 is cut from an aluminum alloy plate with a length of 200 mm, a wall thickness of 5 mm, and a width of 5 cm; the adjustable paddle 102 and the collar 103 are connected by welding. The gap between the inner diameter of the collar 103 and the outer diameter of the main rod 101 is ≤1 mm, forming a sliding connection. A single main rod 101 can accommodate 50 to 60 adjustable paddle assemblies.

[0047] like Figure 5As shown, the support adjustment assembly includes a support screw 104, a sleeve 105, and a nut 106. The sleeve 105 is fixedly connected to the lower end of the main rod 101, and the nut 106 is fixedly connected inside the sleeve 105. The support screw 104 and the nut 106 are threaded together and supported on the surface of the pitched roof. In this embodiment, an M16 screw and nut are used, and the sleeve 105 is a stainless steel tube with a diameter of 18mm. The support screw 104 is a screw with a thread at one end, which is fitted into the nut 106. The height can be adjusted by adjusting the support screw 104, with an adjustment accuracy of 5mm.

[0048] like Figure 6 As shown, the main rod 101 houses a vibration motor 107, a limiting rod 108, a rechargeable battery 109, and a power switch 110. The main rod 101 is a hollow aluminum alloy rod with a long axis of 50mm, a short axis of 25mm, a wall thickness of 2mm, and a single length of 3m. The vibration motor 107 consists of two sets of miniature vibration motors with a diameter of 25mm. The limiting rod 108 is a solid aluminum alloy rod with a long axis of 48mm, a short axis of 23mm, and a length of 1.5m. The rechargeable battery 109 is electrically connected to the vibration motor 107 via the power switch 110. The limiting rod 108 is used to fix the position of the vibration motor 107 inside the main rod 101. During use, the vibration of the vibration motor 107 can be controlled by the power switch 110. The vibration motor 107 drives the adjustable paddle assembly to vibrate and compact the gaps in the concrete after the adjustable paddle 102 has been pulled out.

[0049] Both the main rod 101 and the collar 103 are elliptical in shape, which restricts the rotation and guides the adjustable paddle assembly, effectively intercepting concrete.

[0050] Example 2

[0051] This invention provides a method for preventing slippage during concrete pouring on sloping roofs, using the construction system described in Example 1. Specifically, the method includes the following steps:

[0052] Step S1, Install anti-slip template: Lay the anti-slip template 2 on the surface of the sloping roof according to the designed slope, use a level to check the slope of the anti-slip template 2, and control the slope deviation within 1%. Apply polyurethane sealant to the template joints.

[0053] Step S2, tying roof panel reinforcement: Tie the roof panel reinforcement 3 on the anti-slip template 2 according to the design requirements.

[0054] Step S3: Arrange adjustable temporary interception structures: Along the slope of the sloping roof, starting approximately 500mm from the eaves / gutter, install one adjustable temporary interception structure 1 every 3m, creating compartments in the roof panel. The adjustable temporary interception structure 1 is installed at a 90° angle to the ground. Adjust the adjustable lever assembly so that the adjustable levers 102 are fully distributed within the steel reinforcement spacing. Adjust the support adjustment assembly to ensure the height of the adjustable temporary interception structure 1 matches the roof panel thickness.

[0055] Step S4: Layered concrete pouring. Use C30 concrete with a slump of 180±20mm. Pour in layers, starting from the downhill direction of the sloping roof and moving uphill. Use an immersion vibrator for compaction, inserting it quickly and withdrawing it slowly, with a vibration point spacing of no more than 400mm. Pause pouring when each layer reaches the position of the vibrator 102, allowing it to compact completely before continuing with the next layer.

[0056] Step S5, Pull out the interception system: Before the initial setting of the poured concrete, pull out the adjustable temporary interception structure 1 upwards. During the pulling process, start the main rod vibration system through the power switch 110, vibrating while pulling, so that the gap formed after the paddle is pulled out of the concrete is sealed by vibration, achieving a waterproof effect.

[0057] Step S6, Clean the interception structure and continue construction: Clean the adjustable temporary interception structure 1, and repeat steps S3 to S5 to construct the next pouring chamber.

[0058] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A construction system for preventing slippage during concrete pouring on pitched roofs, characterized in that, include: Anti-slip template and adjustable temporary interception structure; The anti-slip template is laid on the surface of the sloping roof, and the roof panel reinforcement is tied to the anti-slip template; The adjustable temporary interception structure is installed on the roof panel reinforcement; The adjustable temporary interception structure includes a main rod, multiple adjustable lever assemblies, and a support adjustment assembly; the main rod is a hollow rod extending laterally along the sloping roof, and a vibration motor is installed inside it; the adjustable lever assembly includes a collar slidably sleeved on the outer wall of the main rod and levers fixed to the outer wall of the collar, the levers being used to insert into the gaps of the roof panel reinforcement to form a concrete interception barrier. The support adjustment components are located at both ends of the main rod and are used to support the main rod and adjust the height of the main rod relative to the anti-slip template base plate.

2. The anti-slip construction system for concrete pouring on sloping roofs according to claim 1, characterized in that: The inner wall of the collar slides into the outer wall of the main rod, and the gap between them is no more than 1 mm.

3. The anti-slip construction system for concrete pouring on sloping roofs according to claim 1, characterized in that: The main rod has an elliptical cross-section, and the inner hole of the collar is an elliptical shape adapted to the cross-section of the main rod. The main rod and the collar cooperate to restrict the rotation of the lever around the axis of the main rod.

4. The anti-slip construction system for concrete pouring on sloping roofs according to claim 1, characterized in that: The anti-slip template is a plywood with a textured surface.

5. The anti-slip construction system for concrete pouring on sloping roofs according to claim 1, characterized in that: The support adjustment assembly includes a support screw, a sleeve, and a nut. The sleeve is fixedly connected to the lower end of the main rod, and the nut is fixedly connected inside the sleeve. The support screw is threadedly engaged with the nut and supports the surface of the pitched roof.

6. A method for preventing slippage during concrete pouring on sloping roofs, characterized in that, The method, employing the construction system as described in any one of claims 1 to 5, comprises the following steps: Step S1, Install anti-slip template: Lay the anti-slip template on the surface of the sloping roof according to the designed slope, and check the slope; Step S2, tying roof panel reinforcement: Tie reinforcement bars on the anti-slip template according to design requirements; Step S3, Arrange adjustable temporary interception structures: Set multiple adjustable temporary interception structures at intervals along the slope direction of the sloping roof to divide the sloping roof into multiple pouring chambers; adjust each of the adjustable lever components so that the levers are inserted into and fill the transverse gaps of the roof panel reinforcement; and adjust the support adjustment components so that the height of the adjustable temporary interception structure is adapted to the design thickness of the roof panel. Step S4, layered concrete pouring: pour concrete layer by layer from the downhill direction to the uphill direction of the sloping roof. Step S5, pull out the interception system: Before the concrete has set, pull out the adjustable temporary interception structure upwards. During the pulling process, start the vibration motor and pull out while vibrating to seal the gap formed after the paddle is pulled out. Step S6: Clean the adjustable temporary interception structure, and repeat steps S3 to S5 to construct the next pouring chamber.

7. A method for preventing slippage during concrete pouring on a sloping roof according to claim 6, characterized in that: In step S3, the first adjustable temporary interception structure is installed at a distance of 480-520mm from the bottom eaves or gutter of the sloping roof, and one is installed every 2.5-3.5m along the slope upwards.

8. A method for preventing slippage during concrete pouring on a sloping roof according to claim 6, characterized in that: In step S4, the concrete is C30 concrete with a slump of 180±20mm; an immersion vibrator is used for compaction, with the vibrator inserted quickly and withdrawn slowly, and the spacing between vibration points not exceeding 400mm.

9. A method for preventing slippage during concrete pouring on a sloping roof according to claim 6, characterized in that: In step S4, the pouring of each layer of concrete is paused when it reaches the position of the lever, and the next layer is poured after it has been vibrated and compacted.

10. A method for preventing slippage during concrete pouring on a sloping roof according to claim 6, characterized in that: The slope of the pitched roof is greater than or equal to 15°.

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