Safety protection method for elevator shaft under aluminum formwork system

Abstract

The invention belongs to the technical field of engineering construction, and discloses a safety protection method for an elevator shaft under an aluminum formwork system, which comprises the following steps: firstly, pre-arranging reinforcing steel bars at the position of an elevator shaft, and carrying out stress checking calculation on the reinforcing steel bars so as to facilitate subsequent construction; and then the notches for the steel bars to penetrate through are formed in the aluminum formwork, so that the steel bars can conveniently penetrate through the aluminum formwork, and the construction efficiency is improved. According to the size and the shape of the elevator shaft, the aluminum formworks are assembled, then the steel bars penetrate through the notches to build the operation platform, the complex building process of a traditional steel pipe frame is avoided, and the construction cost and the time cost are reduced. Then concrete is poured, the formwork is removed, concrete curing is conducted, and finally the hole is protected, so that the operation safety of operators on the operation platform is improved, and the operators are prevented from being injured due to falling into the hole accidentally. By means of the arrangement, the safety protection method for the elevator shaft under the aluminum formwork system can facilitate construction, and is safe, efficient and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a safety protection method for an elevator shaft under an aluminum formwork system. Background Art

[0002] In the construction process of elevator shafts based on aluminum formwork systems, traditional construction platforms are generally built with steel pipe racks, which are not only time-consuming and labor-intensive to build, but also have high construction costs. In addition, it is difficult to protect the openings of the demolding layer and the plane openings of the working layer, thus reducing the safety of workers on the construction platform. In addition, the material transportation cycle used in the steel pipe rack is long, which reduces construction efficiency and the material input cost is high, which makes construction work inconvenient.

[0003] Therefore, there is an urgent need for a safety protection method for elevator shafts under an aluminum mold system to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a safety protection method for an elevator shaft under an aluminum formwork system, which is convenient for construction, safe, efficient and low in cost.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A safety protection method for an elevator shaft under an aluminum mold system, comprising:

[0007] Step 1: pre-lay out steel bars at the elevator shaft and perform force calculation on the steel bars;

[0008] Step 2: Open a notch on the aluminum formwork for inserting the steel bars;

[0009] Step 3: Assemble the aluminum formwork according to the size and shape of the elevator shaft;

[0010] Step 4: Pass the steel bars through the notches to build the operating platform;

[0011] Step 5: pouring concrete;

[0012] Step 6: Remove the formwork and carry out concrete curing;

[0013] Step 7: Protect the cave entrance.

[0014] Optionally, in step 2, the width of the notch is 10-30 mm, the depth is 10-30 mm, and the horizontal spacing between the notches is 100-200 mm.

[0015] Optionally, in step four, the steel bar includes a plurality of transverse bars and a plurality of longitudinal bars, the plurality of transverse bars are arranged at intervals and connected to the plurality of longitudinal bars arranged at intervals to form a steel mesh.

[0016] Optionally, wooden formwork is fully laid on the steel mesh, and the steel mesh and the wooden formwork together form an operating platform.

[0017] Optionally, the wooden formworks are overlapped with each other, and the overlap length is not less than 10 cm.

[0018] Optionally, the wooden formworks are fixedly connected by fixing members.

[0019] Optionally, in step four, the ends of the steel bars extend into the structural beams and / or structural walls and are bent.

[0020] Optionally, the length of the steel bar extending into the structural beam and / or structural wall is 100-200 mm.

[0021] Optionally, in step six, after the concrete reaches a specified strength, curing and demolding operations are carried out.

[0022] Optionally, a plurality of operating platforms are provided, and the plurality of operating platforms are arranged at intervals along the extension direction of the elevator shaft. Beneficial effects of the present invention:

[0023] The present invention provides a safety protection method for an elevator shaft under an aluminum formwork system. First, steel bars are pre-arranged at the elevator shaft position, and the steel bars are subjected to force calculation, so as to ensure the stability and safety of the elevator shaft structure, so as to facilitate subsequent construction. Then, a notch for inserting steel bars is opened on the aluminum formwork, so that the steel bars can be conveniently inserted into the aluminum formwork, thereby simplifying the erection process of the operating platform and improving the construction efficiency. Then, the aluminum formwork is assembled according to the size and shape of the elevator shaft, so as to ensure the accuracy and applicability of the construction work. Then, the steel bars are inserted into the notch to erect the operating platform, so as to avoid the complicated erection process of the traditional steel pipe rack and reduce the construction cost and time cost. Then, concrete is poured, so as to further reinforce the elevator shaft and improve the stability of the overall structure. Then, the formwork is removed and concrete curing is performed, so as to ensure the strength and durability of the concrete and provide safety guarantee for subsequent construction and use. Finally, the hole protection is performed, so as to improve the operating safety of the operator on the operating platform and avoid the operator from being injured due to accidentally falling into the hole. Through the above-mentioned arrangement, the safety protection method for the elevator shaft under the aluminum formwork system of the present application can be easy to construct, safe, efficient and low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flow chart of a safety protection method for elevator shaft under an aluminum mold system provided by an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the installation of the steel mesh provided by the embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the connection of the wooden formwork provided by an embodiment of the present invention.

[0027] In the figure:

[0028] 10. Steel mesh; 1. Horizontal reinforcement; 2. Longitudinal reinforcement; 20. Wooden formwork; 30. Fasteners. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] In the construction process of elevator shafts based on aluminum formwork systems, traditional construction platforms are generally built with steel pipe racks, which are not only time-consuming and labor-intensive to build, but also have high construction costs. In addition, it is difficult to protect the openings of the demolding layer and the plane openings of the working layer, thus reducing the safety of workers on the construction platform. In addition, the material transportation cycle used in the steel pipe rack is long, which reduces construction efficiency and the material input cost is high, which makes construction work inconvenient.

[0034] Therefore, there is an urgent need for a safety protection method for elevator shafts under an aluminum mold system to solve the above technical problems.

[0035] like Figure 1-Figure 3 As shown, this embodiment provides a safety protection method for an elevator shaft under an aluminum mold system, which includes the following steps:

[0036] Step 1: Pre-lay out steel bars in the elevator shaft and perform force calculations on the steel bars.

[0037] Specifically, in step 1, it is assumed that two workers are working in the elevator shaft at the same time, where the size of the elevator shaft is calculated as 2100mm×2100mm, the steel bars are configured as C10@200 (i.e., steel bars with a diameter of 10mm and a spacing of 200mm) and form a mesh, and the steel bars are subjected to concentrated force in the mid-span. According to the above design, the specific process of steel bar force verification at the elevator shaft is as follows:

[0038] Steel bar strain = 360 / (2×105) = 0.0018

[0039] After the steel bar is subjected to concentrated load, the angle between the steel bar and the horizontal line is θ, cosθ=1 / (1+0.0018)=0.998, sinθ=(1-0.9982)0.5=0.063

[0040] The vertical force generated by the maximum tension that a single steel bar can withstand on one side is F1 = 360 × 78.5 × 0.063 = 1.78 kN

[0041] The vertical force generated by the maximum tension that a single steel bar can withstand on both sides is F = 1.78 × 2 = 3.56 kN

[0042] Since it is a two-way reinforcement, the total vertical force = 3.56 × 2 = 7.12 kN

[0043] Because the spacing between the steel bars is 200mm, the force borne by the steel bars per square meter is 7.12 / 0.2=35.6kN / m

[0044] Therefore, the force that a single square meter of mesh can withstand is 35.6 / 2.1=16.95kN / m2

[0045] Assuming the total weight of the two workers and the tools is 2 kN, the load generated is 2 kN / (2.1×2.1)=0.45 kN / m2

[0046] Since the load that a single square meter of mesh can bear is greater than the total load of two workers and working tools, the above design meets the construction requirements. It should be noted that technicians in this field can make adjustments based on the above steel bar force verification process, which will not be explained in detail here.

[0047] Step 2: Open notches on the aluminum formwork for inserting steel bars. By opening notches on the aluminum formwork, the steel bars can be easily inserted into the aluminum formwork, thereby simplifying the process of setting up the operating platform, which not only improves construction efficiency, but also reduces construction costs and avoids the installation of the operating platform affecting the assembly of the aluminum formwork.

[0048] Specifically, in step 2, the width of the slot is 10-30 mm, the depth is 10-30 mm, and the horizontal spacing between the slots is 100-200 mm, ensuring that the steel bars can be stably inserted into the slots without causing excessive impact on the structural strength of the aluminum formwork.

[0049] Step 3: Assemble the aluminum formwork according to the size and shape of the elevator shaft. This configuration avoids the complicated erection process of the traditional steel pipe rack and reduces the construction cost and time cost.

[0050] Step 4: Pass the steel bars through the grooves to build an operating platform.

[0051] Specifically, in step four, the steel bars include a plurality of transverse bars 1 and a plurality of longitudinal bars 2, the plurality of transverse bars 1 are arranged at intervals and connected to the plurality of longitudinal bars 2 arranged at intervals to form a steel mesh 10, thereby improving the overall stability and bearing capacity of the operating platform.

[0052] Specifically, the wooden formwork 20 is fully laid on the steel mesh 10, and the steel mesh 10 and the wooden formwork 20 together form an operating platform, which makes the operating platform more stable and safe, and not only increases the flatness of the operating platform, but also improves the working comfort of the construction workers.

[0053] More specifically, the wooden formworks 20 are overlapped with each other, and the overlap length is not less than 10 cm, which ensures the integrity and stability of the operating platform and effectively prevents the wooden formworks 20 from being displaced or damaged during the construction process.

[0054] More specifically, the wooden templates 20 are fixedly connected by fixing members 30. The fixing members 30 are screws or bolts, and the specific structure of the fixing members 30 is not limited here, as long as the above-mentioned functions can be achieved.

[0055] Specifically, in step four, the ends of the steel bars are extended into the structural beams and / or structural walls and bent, which not only enhances the connectivity between the operating platform and the elevator shaft structure, but also improves the stability and safety of the overall structure.

[0056] Specifically, the length of the steel bar extending into the structural beam and / or structural wall is 100-200 mm, which ensures the firmness and reliability of the connection between the above components.

[0057] Step 5: Pouring concrete can further strengthen the structure of the elevator shaft and improve its overall stability.

[0058] Step 6: Remove the formwork and carry out concrete curing.

[0059] Specifically, in step six, after the concrete reaches the specified strength, maintenance and demolding operations are carried out. This step ensures that the strength and durability of the concrete meet the design requirements, providing safety guarantees for subsequent construction and use. At the same time, the aluminum formwork can be reused after demolding, thereby reducing construction costs.

[0060] Step 7: Protect the cave entrance.

[0061] Specifically, in step seven, a guardrail with a height of not less than 1.8m is set around the elevator shaft opening, a skirting board with a height of not less than 200mm should be set at the bottom of the guardrail, and a horizontal safety net is hung inside the elevator shaft to achieve opening protection.

[0062] Specifically, in this embodiment, a plurality of operating platforms are provided, and the plurality of operating platforms are spaced apart along the extension direction of the elevator shaft. When the construction of the working layer is completed, the operating platform at the bottom plate of the working layer is used as a hard isolation for inter-layer protection, while the operating platform at the top plate of the working layer is used to continue construction, which not only improves the construction efficiency and quality, but also facilitates the operation and movement of construction personnel.

[0063] It should be noted that the present embodiment provides a safety protection method for an elevator shaft under an aluminum formwork system. First, steel bars are pre-arranged at the elevator shaft position, and the steel bars are subjected to force calculation, which can ensure the stability and safety of the elevator shaft structure, so as to facilitate subsequent construction. Then, notches for inserting steel bars are opened on the aluminum formwork, so that the steel bars can be easily inserted into the aluminum formwork, thereby simplifying the erection process of the operating platform and improving the construction efficiency. Then, according to the size and shape of the elevator shaft, the aluminum formwork is assembled to ensure the accuracy and applicability of the construction work. After that, the steel bars are inserted into the notches to erect the operating platform, which avoids the complex erection process of the traditional steel pipe rack and reduces the construction cost and time cost. Then, concrete is poured to further strengthen the elevator shaft and improve the stability of the overall structure. After that, the formwork is removed and concrete curing is performed to ensure the strength and durability of the concrete, providing safety protection for subsequent construction and use. Finally, the hole protection is performed, thereby improving the safety of the operation of the operator on the operating platform and preventing the operator from being injured by accidentally falling into the hole. Through the above arrangement, the safety protection method for the elevator shaft under the aluminum formwork system of this embodiment can be easy to construct, safe, efficient and low-cost.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A safety protection method for elevator shafts under aluminum mold systems, characterized in that: include: Step 1: pre-lay out steel bars at the elevator shaft and perform force calculation on the steel bars; Step 2: Open a notch on the aluminum formwork for inserting the steel bars; Step 3: Assemble the aluminum formwork according to the size and shape of the elevator shaft; Step 4: Pass the steel bars through the notches to build the operating platform; Step 5: pouring concrete; Step 6: Remove the formwork and carry out concrete curing; Step 7: Protect the cave entrance.

2. The safety protection method for elevator shaft under aluminum mold system according to claim 1 is characterized in that: In step 2, the width of the notch is 10-30 mm, the depth is 10-30 mm, and the horizontal spacing between the notches is 100-200 mm.

3. The safety protection method for elevator shaft under aluminum mold system according to claim 1 is characterized in that: In step 4, the steel bar includes a plurality of transverse bars (1) and a plurality of longitudinal bars (2), wherein the plurality of transverse bars (1) are arranged at intervals and connected to the plurality of longitudinal bars (2) arranged at intervals to form a steel mesh (10).

4. The safety protection method for elevator shaft under aluminum mold system according to claim 3 is characterized in that: A wooden template (20) is fully laid on the steel mesh (10), and the steel mesh (10) and the wooden template (20) together form an operating platform.

5. The safety protection method for elevator shaft under aluminum mold system according to claim 4 is characterized in that: The wooden templates (20) are overlapped with each other, and the overlap length is not less than 10 cm.

6. The safety protection method for elevator shaft under aluminum mold system according to claim 5 is characterized in that: The wooden templates (20) are fixedly connected via fixing members (30).

7. The safety protection method for elevator shaft under aluminum mold system according to claim 1 is characterized in that: In step 4, the ends of the steel bars are extended into the structural beams and / or structural walls and bent.

8. The safety protection method for elevator shafts under aluminum mold system according to claim 7 is characterized in that: The length of the steel bars extending into the structural beams and / or structural walls is 100 to 200 mm.

9. The safety protection method for elevator shaft under aluminum mold system according to claim 1 is characterized in that: In step six, after the concrete reaches the specified strength, curing and formwork removal operations are carried out.

10. The safety protection method for elevator shaft under aluminum mold system according to any one of claims 1 to 9, characterized in that: A plurality of operating platforms are provided, and the plurality of operating platforms are arranged at intervals along the extension direction of the elevator shaft.

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