Temporary passage and protection integrated method synchronously assembled and disassembled along with aluminum alloy formwork system

Abstract

The invention discloses a temporary passage and protection integrated method and device synchronously assembled and disassembled along with an aluminum alloy formwork system, and belongs to the technical field of constructional engineering formworks. The method comprises the steps that bolt holes are reserved in a bottom die and a side die of an aluminum die of the inclined section of the stair, and a sleeve type bearing which shares the same fastening bolt with the holes is fixed to the inner side of a formwork; an integral passing component and a protective component supporting leg which are prefabricated in a factory are inserted into a bearing seat, a safety channel and a limb handrail are formed immediately, and on-site welding is not needed; and the component is integrally pulled out before pouring, the bolt hole is sealed by the miniature steel sheet plugging piece, and then the component is synchronously dismantled along with the aluminum mold and turned over. The device is composed of a square steel tube integrally-welded ladder-handrail, a sleeve bearing seat and a miniature plugging piece, all the components can be repeatedly used, assembly and disassembly are rapid, slurry leakage is eradicated, and the safety and the green construction level of the stair construction stage are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of formwork system technology in building engineering, and in particular to an integrated method and device for temporary access protection that is compatible with aluminum alloy formwork systems and can be installed and disassembled simultaneously during the construction of stair sections. Background Technology

[0002] In the construction of cast-in-place reinforced concrete stairs, aluminum alloy formwork is widely used due to its light weight and good forming quality. However, after the bottom and side formwork of the stair sloping section is installed and before the concrete of the steps is poured, the working surface forms a continuous slope with a large gradient and a smooth surface. The specifications do not require the simultaneous installation of temporary passages and edge protection, resulting in: 1) People need to use simple wooden planks or scaffolding to go up and down, which is easy to slip and fall. 2) The stairs have no handrails on either side, posing a risk of falling from a height; 3) Traditional steel pipe fastener temporary passages require on-site welding or cutting, which is time-consuming to install and dismantle, causes significant pollution, cannot be dismantled at the same time as aluminum formwork, and cannot be reused. 4) If the holes in the aluminum mold are not properly sealed, grout will leak during concrete pouring, affecting the molding quality.

[0003] Therefore, there is an urgent need for a temporary access and protection solution that can be installed simultaneously with aluminum alloy formwork systems, dismantled quickly, and fully reusable, in order to balance construction safety, green and low-carbon features, and recycling. Summary of the Invention

[0004] The main objective of this invention is to provide an integrated method for temporary access protection that can be assembled and disassembled simultaneously with an aluminum alloy formwork system. By prefabricating an integral "staircase-railing" component, using sleeve-pin quick-release connections and micro bolt hole sealing technology, a safe passage and edge protection are immediately formed after the bottom and side formwork of the inclined stair section are installed. The entire component is removed before pouring and rotated synchronously with the aluminum formwork, solving the problems of inconvenient access, lack of protection, time-consuming installation and disassembly, inability to reuse, and leakage affecting the molding quality in the prior art.

[0005] To achieve the above objectives, the present invention is implemented as follows: A method for integrated temporary access protection that is simultaneously assembled and disassembled with an aluminum alloy template system, characterized in that it includes: a. Bolt holes are formed at predetermined positions on the aluminum alloy formwork of the stair sloping section; b. Fix the sleeve-type bearing that shares the same fastening bolt as the bolt hole to the inside of the template, so that the bearing and the template form an integral whole; c. Insert the legs of the prefabricated integral passage components and integral protective components into the corresponding bearings. Temporary passageways and edge protection can be formed immediately without on-site welding or cutting. d. Remove the passage and protective components as a whole before pouring concrete, leaving the sleeve-type bearing seat intact; e. Seal the bolt holes with miniature sealing components before pouring concrete; f. Once the concrete reaches the conditions for demolding, remove the aluminum alloy formwork and sleeve-type bearings, and reuse all components simultaneously.

[0006] This invention adopts the above-mentioned "bolt-sleeve-pin" three-in-one concept, turning "passage + protection" into a large pin. Installation and removal only require insertion / pulling actions, which are synchronized with the aluminum mold and do not require additional power.

[0007] Furthermore, the sleeve-type bearing utilizes the existing bolt tightening force of the template to complete its own anchoring, and at the same time serves as a pin bearing, realizing a three-in-one quick-release mechanism of "bolt-bearing-pin".

[0008] Thus, compared with the traditional method of requiring separate holes to be drilled for the sleeve or welding of ear plates, the present invention directly "borrows" the template bolts, avoiding secondary drilling and ensuring the integrity of the aluminum mold; after the ladder / railing is pulled out, the bolts continue to be tightened without affecting the stress on the template.

[0009] Furthermore, the steps and legs of the integral passageway component, as well as the horizontal railings, vertical railings, handrails, and toe boards of the integral protective component, are all welded together from square steel pipes of the same specification, meeting the requirements of high rigidity, lightweight, and standardized turnover.

[0010] Furthermore, the miniature sealing component is made by welding a stud to a galvanized steel sheet ≤1 mm thick in the center. After tightening, the steel sheet fits against the surface of the template to prevent concrete leakage.

[0011] Furthermore, the installation and dismantling of all components are completed in the same cycle as the aluminum alloy formwork, requiring no additional power or tools, and can be reused repeatedly.

[0012] Furthermore, this invention also proposes a temporary integrated access protection device for the above-mentioned method, comprising: an integral access component with a tiered surface and legs; an integral protection component with a railing unit and a toe plate; a sleeve-type bearing that shares the same fastening bolt with the aluminum alloy template to complete its own anchoring, and also serves as a pin bearing for the legs or railing unit; and a miniature sealing component for sealing the bolt holes after the access / protection component is pulled out.

[0013] Furthermore, the sleeve-type bearing is welded from square steel tubes and flat steel, with a closed bottom and connection holes on the side wall corresponding to the template bolts, forming a weld-free quick-release node.

[0014] Furthermore, the steel sheet of the micro-sealing component has a thickness of ≤1 mm and an outer dimension of ≤30 mm×30 mm, and there is no leakage or protrusion on the concrete surface after demolding.

[0015] Furthermore, all component surfaces are galvanized or coated with a release agent to meet the requirements for multiple turnovers and concrete surface quality, as well as to prevent rust and ensure the appearance after demolding.

[0016] Thus, this invention integrates the four processes of passage, protection, sealing, and turnover into the standard operation of aluminum alloy formwork. No welding or cutting is required, installation and dismantling are quick, and the process is completed in the same cycle as the formwork. All components can be reused, which not only eliminates the risk of slipping and falling from heights, but also avoids grout leakage defects. It is green, low-carbon, and produces a beautiful finished product. Attached Figure Description

[0017] Figure 1 This is a plan view of the temporary access ladder and guardrail supporting device in this invention.

[0018] Figure 2 This is an elevation view of the temporary access ladder and guardrail supporting device in this invention.

[0019] Figure 3 This is a detailed drawing of the passageway ladder in this invention.

[0020] Figure 4 This refers to the protective railing for the passageway ladder in this invention.

[0021] Figure 5 This is a detailed drawing (plan view) of the fixed sleeve for the passageway ladder in this invention.

[0022] Figure 6 This is a detailed drawing (elevation) of the fixed sleeve for the passageway ladder in this invention.

[0023] Figure 7 This is a detailed drawing (plan view) of the fixing sleeve for the walkway guardrail in this invention.

[0024] Figure 8 This is a detailed drawing (elevation) of the fixing sleeve for the guardrail of the passageway ladder in this invention.

[0025] Figure 9 This is a detailed drawing of the opening sealing component in this invention. Detailed Implementation

[0026] To clearly demonstrate the practical application of the present invention, "Integrated Method and Device for Temporary Access Protection that is Simultaneously Installed and Dismantled with the Aluminum Alloy Template System," the following description, in conjunction with the appendix, illustrates the following. Figure 1 ~Attached Figure 9 Using "staircase construction of a certain project" as the implementation scenario, those skilled in the art can directly implement and extend this to the construction of aluminum formwork for staircases in other similar high-rise, super high-rise and prefabricated buildings.

[0027] Example 1 I. Implementation Conditions Staircase type: cast-in-place reinforced concrete staircase. The bottom formwork 1 and side formwork 2 of the inclined section of the aluminum alloy formwork have been installed, but the concrete for the steps has not yet been poured.

[0028] Materials and tools: 40 mm × 40 mm × 2 mm square steel pipe, 50 mm × 50 mm × 3 mm square steel pipe, 3 mm flat steel, M8 × 30 bolts, handheld electric welding machine, angle grinder, release agent brush - all are common resources on the construction site.

[0029] II. Precast Component Fabrication Passenger elevator 6 (e.g.) Figure 3 ) The 62-step ladder surface is constructed by welding 40×40×2 square steel pipes into a 3000 mm×400 mm rectangular frame, with horizontal bracing added at both ends.

[0030] Outrigger 61: 40×40×2 square steel pipe, 100 mm in length, 2 each at the top, middle and bottom, welded together with the same specification steel pipe of the ladder surface to ensure high rigidity and no shaking.

[0031] Guardrail 7 (e.g.) Figure 4 ) Horizontal railing 72, vertical railing 71, handrail 73: 40×40×2 square steel pipe, with lengths of 2750 mm, 1000 mm, and 3850 mm respectively (adjustable according to the length of the staircase).

[0032] Toe board 74: Finished galvanized iron sheet, 200 mm high, the same length as the horizontal railing, fixed to the inside of the upright with self-tapping screws.

[0033] Fixed sleeve (1) Access ladder fixing sleeve 3 (e.g.) Figure 5-6 ) - Square steel tube 31: 50×50×3, length 100 mm, bottom sealed with the same material.

[0034] - L-shaped flat steel 32: 3 mm thick, with the long side 70 mm welded to the outer wall of the square steel tube in the center, and the short side 30 mm with an M8 bolt hole in the center for bolt connection with the bottom mold 1.

[0035] (2) Guardrail fixing sleeve 4 (e.g.) Figure 7-8 ) - Square steel pipe 41: 50×50×3, length 100 mm, bottom closed.

[0036] - Long flat steel 42: 3 mm thick, total length 210 mm, 150 mm section welded to three sides of square steel pipe, with M8 bolt holes at both ends 30 mm each, for bolt connection with side mold 2.

[0037] 8 opening sealing components (such as) Figure 9 ) M8 stud 81 + 20×20×1 mm galvanized steel sheet 82 are centered and welded together, with matching nuts and washers; before installation, apply release agent to the surface in contact with the concrete to prevent adhesion and grout leakage.

[0038] III. On-site assembly and disassembly process Step a: 12 M8 bolt holes are opened at predetermined positions on the bottom mold 1 (2 sets each on the top, middle and bottom, with 2 holes in each set), and 6 M8 bolt holes are opened on the side mold 2 (1 set each on the top, middle and bottom, with 2 holes in each set).

[0039] Step b: Use M8×30 ​​bolts 5 to fix sleeves 3 and 4 to the bottom mold 1 and side mold 2 respectively. The bolt tightening force simultaneously anchors the sleeves themselves, without the need for additional locking parts.

[0040] Step c: Insert the six legs 61 of the prefabricated access ladder 6 into the sleeve 3, and insert the three vertical railings 71 of the prefabricated guardrail 7 into the sleeve 4, immediately forming a passageway and edge protection (such as...). Figure 1-2 ).

[0041] Step d: Before pouring concrete for the stair treads, remove the ladder 6 and railing 7 as a whole, while leaving sleeves 3 and 4 inside the formwork to avoid interfering with subsequent reinforcement binding and concrete pouring.

[0042] Step e: Screw the opening sealer 8 into the original bolt hole. The steel sheet 82 adheres to the surface of the template, forming a line seal to prevent grout leakage (e.g., Figure 9 ).

[0043] Step f: After the concrete reaches the demolding strength, remove the aluminum alloy formwork and sleeves 3 and 4. All components are removed from the site along with the formwork, cleaned up, and put into the next floor to achieve full turnover.

[0044] Example 2 In another stair section, the square steel pipe section was changed to 35×35×2.5 mm, the bolts were changed to M6×25 mm, the sleeve outer diameter was Φ48 mm round steel pipe + flat steel flange, the inner diameter of the bearing and the gap between the support leg was 1 mm, which also met the quick-release function of "insertion to position and pull out to remove"; the steel sheet of the opening sealing part was changed to a Φ25 mm×0.8 mm round sheet, still ≤1 mm thick, and the surface was flat after demolding.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for integrated temporary access protection that is simultaneously assembled and disassembled with an aluminum alloy template system, characterized in that, include: Bolt holes are formed at predetermined positions on the aluminum alloy formwork of the stair sloping section; A sleeve-type bearing that shares the same fastening bolt as the bolt hole is fixed to the inside of the template, so that the bearing and the template form an integral whole; The legs of the prefabricated integral passage components and integral protective components are inserted into the corresponding bearings, and temporary passageways and edge protection can be formed immediately without on-site welding or cutting. Before pouring concrete, the passage and protective components are removed as a whole, while the sleeve-type bearing is retained. Seal the bolt holes with miniature sealing components before pouring concrete; Once the concrete reaches the conditions for demolding, remove the aluminum alloy formwork and sleeve-type bearing, and all components can be reused simultaneously.

2. The integrated temporary access protection method according to claim 1, which allows for simultaneous assembly and disassembly of the aluminum alloy template system, is characterized in that... The sleeve-type bearing seat utilizes the existing bolt tightening force of the template to complete its own anchoring, and at the same time serves as a pin bearing seat, realizing a three-in-one quick-release mechanism of "bolt-bearing seat-pin".

3. The integrated temporary access protection method according to claim 1 or 2, which allows for simultaneous assembly and disassembly of the aluminum alloy template system, is characterized in that... The steps and legs of the integral passageway component, as well as the horizontal railings, vertical railings, handrails, and toe boards of the integral protective component, are all welded together from square steel pipes of the same specification, meeting the requirements of high rigidity, lightweight, and standardized turnover.

4. The integrated temporary access protection method according to any one of claims 1-3, which allows for simultaneous assembly and disassembly of the aluminum alloy template system, is characterized in that... The miniature sealing component is made by welding a stud to a galvanized steel sheet ≤1 mm thick in the center. After tightening, the steel sheet fits against the surface of the template to prevent concrete leakage.

5. The integrated temporary access protection method according to any one of claims 1-4, which allows for simultaneous assembly and disassembly of the aluminum alloy template system, is characterized in that... The installation and dismantling of all components are completed in the same cycle as the aluminum alloy formwork, requiring no additional power or tools, and can be reused repeatedly.

6. A temporary passage protection integrated device for the method described in claims 1-5, characterized in that, include: The integral passageway component is equipped with a tiered surface and supporting legs; The integrated protective structure includes railing units and toe boards; The sleeve-type bearing uses the same fastening bolt as the aluminum alloy formwork to complete its own anchoring, and at the same time serves as the pin bearing for the support leg or railing unit. Miniature sealing components are used to seal bolt holes after the passage / protection components have been removed.

7. The integrated temporary passage protection device according to claim 6, characterized in that, The sleeve-type bearing is welded from square steel tubes and flat steel, with a closed bottom and connection holes on the side wall corresponding to the template bolts, forming a weld-free quick-release node.

8. The integrated temporary passage protection device according to claim 6 or 7, characterized in that, The steel sheet of the miniature sealing component has a thickness of ≤1 mm and an outer dimension of ≤30 mm×30 mm. After demolding, there is no leakage of grout or protrusions on the concrete surface.

9. The integrated temporary passage protection device according to any one of claims 6-8, characterized in that, All component surfaces are galvanized or coated with release agent to meet the requirements for multiple turnovers and concrete surface quality.

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