Steel formwork construction positioning device and steel formwork construction process

Abstract

The application provides a steel formwork construction positioning device and a construction process, and relates to the technical field of hydraulic engineering construction. The positioning device comprises a support frame, a plurality of positioning pipe bodies and positioning bolts. The support frame is formed by a plurality of transverse rods and longitudinal rods being connected with each other. The plurality of positioning pipe bodies are fixedly connected at the cross connection of the transverse rods and the longitudinal rods. The axial positions of the plurality of positioning pipe bodies correspond to the axial positions of a plurality of bolt holes on the steel formwork and wall body reinforcing bars. In addition, the axial line of the positioning pipe body is perpendicular to the plane of the support frame. The positioning bolt is used for connecting the positioning pipe body and the corresponding wall body reinforcing bar, thereby providing positioning for the installation of the steel formwork. The positioning device of the application can replace the steel formwork to fix the positioning bolt and the reinforcing bar. The overall structure of the support frame is light and portable, so that the installation of the steel formwork can be completed with higher efficiency in construction, and the construction progress is accelerated.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering construction technology, specifically to a steel formwork construction positioning device and a steel formwork construction process. Background Technology

[0002] During the reinforcement construction of the reservoir spillway, the concrete was poured on one side with a thickness of 20cm. Steel formwork (form-casting) was used for concrete pouring. The steel formwork was positioned before the bolts were welded to the reinforcing bars. However, due to the confined space, the welders lacked sufficient operating space, and their view was obstructed by the steel formwork, making construction difficult. Furthermore, directly positioning the bolts with the steel formwork was time-consuming and labor-intensive due to its weight and inconvenience. Summary of the Invention

[0003] The purpose of this invention is to provide a steel formwork construction positioning device and a steel formwork construction process to solve the problem that the existing method of directly welding bolts to rebar after positioning the steel formwork in the reinforcement construction of reservoir spillways is inconvenient to move and affects construction efficiency.

[0004] Based on the above objectives, in a first aspect, this application provides a steel formwork construction positioning device, which is used in the reinforcement construction of a reservoir spillway for positioning and installing steel formwork and rebar; the steel formwork construction positioning device includes a support frame, multiple positioning tubes and positioning bolts;

[0005] The supporting frame has the same shape as the steel formwork to be installed, and the supporting frame is composed of multiple horizontal and vertical bars connected together.

[0006] Multiple positioning tubes are fixedly connected at the cross joint of the horizontal and vertical bars. The axial center of the multiple positioning tubes corresponds one-to-one with the axial center of the multiple bolt holes on the steel formwork and the wall reinforcement. Furthermore, the axis of the positioning tubes is perpendicular to the plane of the support frame.

[0007] The positioning bolts are used to pass through the positioning tube and connect to the corresponding wall reinforcement, thereby providing positioning for the installation of the steel formwork.

[0008] Furthermore, the support frame is configured as a rectangle, and the length and width of the support frame are the same as the length and width of the steel template.

[0009] Furthermore, the transverse and longitudinal bars are respectively made of angle steel.

[0010] Furthermore, diagonal reinforcing ribs are also connected to the transverse and longitudinal bars.

[0011] Furthermore, the positioning tube is made of metal.

[0012] Secondly, a steel formwork construction process, characterized by the application of the aforementioned steel formwork positioning device, the process comprising:

[0013] Step 1: Fix the support frame to the spillway sidewall according to the positioning line of the steel formwork, and align the position of the positioning pipe with the bolt hole position of the steel formwork. At the same time, use high-strength bolts to firmly connect the support frame to the spillway sidewall.

[0014] Step 2: Pass the positioning bolts through the positioning pipe and weld them to the reinforcing bars on the side wall of the spillway;

[0015] Step 3: After the positioning bolts are welded to the reinforcing bars, remove the steel formwork construction positioning device;

[0016] Step 4: Align the bolt holes on the steel template with the pre-welded positioning bolts to connect the steel template to the positioning bolts;

[0017] Step 5: Pour concrete.

[0018] Furthermore, the inner side of the spillway sidewall is the spillway hill, and the outer side of the spillway sidewall is provided with a steel mesh for pouring concrete. The rebar is installed inside the spillway sidewall and the steel mesh.

[0019] Furthermore, several anchor bolts are installed between the spillway hillside and the spillway sidewall.

[0020] By adopting the above technical solution, the steel formwork construction positioning device provided in this application has the following technical advantages compared with the prior art:

[0021] In this design, the shape of the support frame is identical to that of the steel formwork to be installed. The support frame is composed of multiple horizontal and vertical members connected together. Multiple positioning tubes are fixedly connected at the cross joints of the horizontal and vertical members. The axial positions of the positioning tubes correspond one-to-one with the axial positions of the multiple bolt holes on the steel formwork and the wall reinforcement. Furthermore, the axis of the positioning tubes is perpendicular to the plane of the support frame. Positioning bolts are used to pass through the positioning tubes and connect to the corresponding wall reinforcement, thereby providing positioning for the installation of the steel formwork.

[0022] The positioning device in this solution can replace steel formwork for fixing positioning bolts and rebar. The overall structure of the support frame is lightweight and easy to move. By closely fitting the support frame to uneven wall surfaces, the thickness of the concrete pour is guaranteed. In actual application on the construction site, this positioning device overcomes difficulties such as limited working space and adapts to various complex wall surfaces, uneven walls, and special situations with inconsistent slope ratios. It can also accurately determine the installation position of the positioning bolts, thereby enabling steel formwork to be installed more efficiently and accelerating the construction progress. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of the steel formwork construction positioning device provided in the embodiments of this application;

[0025] Figure 2 yes Figure 1 Sectional view at point AA;

[0026] Figure 3 This is a schematic diagram of the construction structure of the steel formwork positioning device provided in the embodiments of this application.

[0027] Icons: 1-Steel formwork; 2-Rebar installation; 3-Spillway sidewall; 4-Reinforcement layer; 5-Spillway hillside; 6-Anchor bolt; 100-Support frame; 110-Horizontal bar; 120-Longitudinal bar; 130-Diagonal reinforcing bar; 200-Positioning pipe; 300-Positioning bolt. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] This application provides a steel formwork construction positioning device, which is mainly used in the reinforcement construction of reservoir spillways to solve the problems of limited operating space and inconvenient movement of steel formwork 1 and steel reinforcement 2 during positioning and installation, resulting in low construction efficiency.

[0032] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the steel formwork construction positioning device consists of three parts: a support frame 100, multiple positioning tubes 200, and positioning bolts 300.

[0033] The support frame 100 constitutes the main structure of the entire device. Its shape is consistent with the shape of the steel template 1 to be installed, thereby ensuring that the installation outline of the steel template 1 can be accurately simulated during the subsequent positioning process.

[0034] The support frame 100 is specifically composed of multiple horizontal bars 110 and vertical bars 120 that are perpendicularly and intersecting each other by welding, forming a stable planar grid structure. Multiple positioning tubes 200 are fixedly connected to the cross joints of the horizontal bars 110 and vertical bars 120. The positions of these cross joints are precisely set according to the pre-set bolt hole positions on the steel template 1. In the installed state, the axial positions of the multiple positioning tubes 200 correspond one-to-one with the axial positions of the multiple bolt holes on the steel template 1 and the positions of the pre-embedded reinforcing bars 2 in the wall.

[0035] Crucially, the axis of the positioning tube 200 is set to be perpendicular to the plane of the support frame 100. This ensures that the positioning bolts 300 passing through the positioning tube 200 can be connected to the rebar 2 in a direction perpendicular to the wall, providing an accurate reference for the subsequent vertical installation of the steel formwork 1.

[0036] In actual operation, the positioning bolt 300 is used to pass through the positioning tube 200 and connect with the corresponding wall reinforcement 2, so that the positioning bolt 300 and the reinforcement 2 are fixed in advance before the steel formwork 1 is installed, providing a precise positioning reference for the subsequent installation of the steel formwork 1.

[0037] Considering that steel formwork 1 is mostly a standardized rectangular structure in actual construction, in order to more accurately simulate the size and installation boundary of steel formwork 1, in a further embodiment of this application, the support frame 100 is set as a rectangular structure, and the length and width of the support frame 100 are exactly the same as the length and width of the steel formwork 1 to be installed. Through this one-to-one correspondence in size, the operator only needs to fix the support frame 100 according to the positioning line of the steel formwork 1 to ensure that the position of the positioning tube 200 on it is completely aligned with the bolt hole position of the steel formwork 1, without the need for complex secondary measurement and adjustment, which greatly simplifies the positioning process and improves positioning accuracy and efficiency.

[0038] In practical engineering applications, the support frame 100 needs to possess sufficient structural strength to resist minor collisions or external disturbances during construction, while simultaneously ensuring the overall structure's lightweight nature for easy movement and installation. Considering this practical requirement, in a further embodiment of this application, angle steel is preferably used to fabricate the transverse members 110 and the longitudinal members 120. Angle steel, a common type of steel, has an L-shaped cross-section, excellent bending resistance, and high structural stability. Furthermore, compared to solid steel of equivalent strength, it is lighter and less expensive. Using angle steel to construct the support frame 100 effectively reduces the overall weight of the device while ensuring the overall rigidity and dimensional stability of the frame. This allows operators to easily transport, lift, and fix it to the designated position on the spillway sidewall 3, further improving the convenience and safety of construction.

[0039] Based on the grid structure of the support frame 100, which consists of transverse rods 110 and longitudinal rods 120, considering that the surface of the spillway sidewall 3 may be uneven or the frame may be subjected to uneven stress during construction, the geometry of the frame may undergo slight deformation after long-term use or multiple reuses, thus affecting the positioning accuracy. To solve this problem, in a further embodiment of this application, diagonal reinforcing ribs 130 are also connected to the transverse rods 110 and longitudinal rods 120. The diagonal reinforcing ribs 130 are set at the diagonal positions of the rectangular grid in the corner areas or large-span areas of the frame, forming a stable triangular support structure together with the transverse rods 110 and longitudinal rods 120. This structural design can effectively disperse and resist lateral forces from all directions, significantly improve the overall stiffness and torsional resistance of the support frame 100, and ensure that the support frame 100 maintains its initial flatness and dimensional accuracy during multiple disassembly and reuse, thereby guaranteeing the long-term accuracy of the axial position of each positioning tube 200.

[0040] As a key intermediary component connecting the support frame 100 and the positioning bolts 300, the structural strength and wear resistance of the positioning tube 200 are crucial. During construction, the positioning bolts 300 need to pass through the positioning tube 200 multiple times for tightening or welding. If the material of the positioning tube 200 is too soft or lacks sufficient wear resistance, its inner wall is easily worn down by frequent friction, causing the axis of the positioning bolts 300 to shift, thus affecting the final installation accuracy of the steel formwork 1. Therefore, in a further embodiment of this application, the positioning tube 200 is preferably made of metal, specifically seamless steel pipe or galvanized steel pipe. Metal pipes not only have high compressive and tensile strength, enabling them to be firmly welded to the cross joint of the support frame 100, but also have smooth inner walls and high hardness, allowing them to withstand repeated insertion and tightening of the positioning bolts 300 without deformation or wear. This provides long-term, stable, and precise guidance for the positioning bolts 300, ensuring the reliability of positioning during each construction phase.

[0041] The specific structure of the steel formwork construction positioning device provided in the embodiments of this application has been described in detail above. Based on this, the embodiments of this application also provide a construction process for steel formwork 1 using the above-mentioned positioning device. Specifically:

[0042] Step 1: Fix the support frame 100 to the spillway sidewall 3 according to the positioning lines of the steel template 1. In this step, the operator hoists or transports the assembled support frame 100 to the location of the spillway sidewall 3 to be constructed. Based on the positioning lines indicated on the construction drawings for the steel template 1, align the outer edge of the support frame 100 with the positioning lines. After adjusting the position, ensure that the position of each positioning tube 200 on the frame is precisely aligned axially with the pre-set bolt holes on the steel template 1 and the positions of the pre-embedded rebars 2 in the wall. Subsequently, use high-strength bolts to firmly connect the support frame 100 to the spillway sidewall 3. This connection should be sufficiently robust to withstand the vibrations and stresses that may occur during subsequent welding operations, ensuring that the positioning tubes 200 do not shift during the entire welding process.

[0043] Step Two: Insert the positioning bolts 300 through the positioning tube 200 and weld them to the reinforcing bars 2 of the spillway sidewall 3. After the support frame 100 is securely fixed, the operator inserts the positioning bolts 300 one by one into the corresponding positioning tube 200. Since the positioning tube 200 provides precise axial guidance, the ends of the positioning bolts 300 can accurately contact the reinforcing bars 2 inside the wall. At this point, although the construction space may still be narrow, the operating space is significantly improved because the support frame 100 has replaced the bulky steel formwork 1. The welder can have a clear view and sufficient operating space to perform a high-quality welding connection between the positioning bolts 300 and the reinforcing bars 2 under the guidance of the positioning tube 200.

[0044] After all positioning bolts 300 and rebar 2 have been welded together, proceed to step three: dismantle the steel formwork construction positioning device. Since the positioning bolts 300 and rebar 2 have formed a stable whole through welding, the position and angle of the positioning bolts 300 are completely fixed. At this point, the temporary function of the support frame 100 is complete. Operators only need to remove the high-strength bolts used to fix the support frame 100 to easily remove the entire positioning device from the spillway sidewall 3. Because the support frame 100 is lightweight, dismantling can be completed quickly, and the device can be immediately transferred to the next construction section for reuse.

[0045] Step 4: Align the bolt holes on steel formwork 1 with the pre-welded positioning bolts 300 to connect steel formwork 1 to the positioning bolts 300. After the positioning device is removed, only the precisely positioned positioning bolts 300, which have been welded and fixed, remain on the wall. At this point, the operator can hoist the steel formwork 1 into position, align the bolt holes on its back one by one, and fit them onto the pre-set positioning bolts 300, then tighten them with nuts. Because the positions of the positioning bolts 300 and the bolt holes of the steel formwork 1 are perfectly matched, the installation of steel formwork 1 becomes extremely quick and accurate, requiring no further on-site adjustments or corrections.

[0046] Step 5: Pour concrete to form reinforcement layer 4. After the steel formwork 1 is securely installed using positioning bolts 300, the concrete pouring operation can begin. Because the steel formwork 1 has already formed a stable connection with the rebar 2 and the wall structure through a pre-precisely positioned bolt system, the formwork will not shift or deform during the pouring process, thus ensuring the geometric dimensions and appearance quality of the concrete after it is formed.

[0047] In the construction environment described in this application embodiment, the structure of the spillway sidewall 3 has its unique characteristics. Specifically, the inner side of the spillway sidewall 3 is the spillway hill 5, while the outer side of the spillway sidewall 3 is equipped with a steel mesh for pouring concrete. To enhance the connection strength between the newly poured concrete layer and the original hill structure, the rebar 2 typically needs to be placed inside the spillway sidewall 3 and the steel mesh, extending outwards for connection with the positioning bolts 300 and the steel formwork 1. The positioning device and process provided in this application embodiment are adapted to this complex structural environment. By first positioning, then welding, and then installing the formwork, the interference of the steel mesh is effectively avoided, allowing the positioning and welding operations to be completed in a relatively open space.

[0048] In addition, to further enhance the stability of the spillway sidewall 3 and prevent damage to the wall from lateral pressure from the mountain, multiple anchor bolts 6 are installed between the spillway mountain and the spillway sidewall 3. These anchor bolts 6 penetrate deep into the mountain, providing strong anchoring force for the sidewall. The positioning device and construction process in this embodiment do not require large-scale adjustments during the installation of the steel formwork 1, avoiding accidental disturbance to the installed anchor bolts due to formwork collisions or compression. This improves the efficiency of formwork installation while ensuring the safety and stability of the overall structure.

[0049] The steel formwork positioning device and construction process provided in this application are based on the principle of using a lightweight, reusable support frame 100 to pre-replace the heavy steel formwork 1 to complete the most difficult positioning and welding processes. This device, with its identical external dimensions to the steel formwork 1 and precisely positioned positioning tubes 200, "transfers" the spatial position of the bolt holes on the steel formwork 1 to the support frame 100. Operators can precisely weld the positioning bolts 300 to the reinforcing bars 2 using the guiding effect of the positioning tubes 200 in an environment with a wide field of vision and ample operating space. Since the support frame 100 is much lighter than the steel formwork 1, its movement, fixing, and dismantling are extremely convenient. After the positioning bolts 300 are permanently fixed, the steel formwork 1 is then installed. At this point, the installation of the steel formwork 1 is simplified to a simple "insertion" and "tightening" action, completely solving the problems of inconvenient movement due to the weight of the steel formwork 1 and welding difficulties due to obstructed vision in traditional processes.

[0050] In terms of effectiveness, the technical solution of this application brings many significant advantages.

[0051] 1. Significantly improved construction efficiency. By moving the complex positioning and welding processes forward and decoupling them from the formwork installation process, the installation time of steel formwork 1 was greatly shortened, accelerating the overall construction progress.

[0052] 2. Improved construction quality. The precise guidance of the support frame 100 and the positioning tube 200 ensured the positional accuracy of each positioning bolt 300, thereby ensuring the installation accuracy of the steel formwork 1 and effectively controlling the thickness, flatness, and verticality of the concrete pouring.

[0053] 3. Reduced construction difficulty and labor intensity. The lightweight support frame 100 makes handling and fixing work easy, while the open operating space greatly reduces the difficulty and safety risks of welding operations.

[0054] 4. This device has a simple structure, low manufacturing cost, and high reusability, exhibiting excellent economic efficiency and practicality. It is particularly suitable for engineering scenarios such as reservoir spillway reinforcement, characterized by single-sided pouring, narrow spaces, and complex wall surfaces. In practical applications, this positioning device can adapt well to various complex wall surfaces, uneven walls, and inconsistent slope ratios, demonstrating excellent engineering adaptability.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel formwork construction positioning device, used in the positioning and installation of steel formwork and rebar during the reinforcement construction of a reservoir spillway; characterized in that, Includes a support frame, multiple positioning tubes, and positioning bolts; The supporting frame has the same shape as the steel formwork to be installed, and the supporting frame is composed of multiple horizontal and vertical bars connected together. Multiple positioning tubes are fixedly connected at the cross joint of the horizontal and vertical bars. The axial center of the multiple positioning tubes corresponds one-to-one with the axial center of the multiple bolt holes on the steel formwork and the wall reinforcement. Furthermore, the axis of the positioning tubes is perpendicular to the plane of the support frame. The positioning bolts are used to pass through the positioning tube and connect to the corresponding wall reinforcement, thereby providing positioning for the installation of the steel formwork.

2. The steel formwork construction positioning device according to claim 1, characterized in that, The support frame is rectangular, and the length and width of the support frame are the same as the length and width of the steel template.

3. The steel formwork construction positioning device according to claim 1, characterized in that, The transverse and longitudinal bars are made of angle steel.

4. The steel formwork construction positioning device according to claim 1, characterized in that, The transverse and longitudinal bars are also connected with diagonal reinforcing ribs.

5. The steel formwork construction positioning device according to claim 1, characterized in that, The positioning tube is made of metal.

6. A steel formwork construction process, characterized in that, The process of using the steel formwork construction positioning device according to any one of claims 1-5 includes: Step 1: Fix the support frame to the spillway sidewall according to the positioning line of the steel formwork, and align the position of the positioning pipe with the bolt hole position of the steel formwork. At the same time, use high-strength bolts to firmly connect the support frame to the spillway sidewall. Step 2: Pass the positioning bolts through the positioning pipe and weld them to the reinforcing bars on the side wall of the spillway; Step 3: After the positioning bolts are welded to the reinforcing bars, remove the steel formwork construction positioning device; Step 4: Align the bolt holes on the steel template with the pre-welded positioning bolts to connect the steel template to the positioning bolts; Step 5: Pour concrete.

7. The steel formwork construction process according to claim 6, characterized in that, The inner side of the spillway sidewall is the spillway hillside, and the outer side of the spillway sidewall is equipped with a steel mesh for pouring concrete. Rebar is installed inside the spillway sidewall and the steel mesh.

8. The steel formwork construction process according to claim 6, characterized in that, Several anchor bolts are installed between the spillway hillside and the spillway sidewall.

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