Construction method for positioning and controlling protective layer in reinforcing steel bar mounting process

Abstract

The invention relates to the technical field of building construction, in particular to a construction method for positioning and controlling a protective layer in the steel bar installation process. The method comprises the following steps: determining a steel bar mounting position; prefabricating a positioning rod; a V-shaped positioning seat is welded at the top of the positioning rod; connecting rods are welded at the bottoms of the positioning rods; cushion blocks are fixed at the bottoms of the connecting rods; a support frame for supporting the cushion block is screwed on the template; correspondingly clamping the upper reinforcing steel bars into the positioning seats; performing three-dimensional detection by using the thickness of the steel bar protective layer; and concrete is poured after acceptance. The prefabricated positioning rod is matched with the V-shaped positioning seat and the connecting rod with the cushion block to form a three-dimensional positioning system, accurate positioning and protection layer thickness control in the reinforcing steel bar installation process are achieved, and the problems that traditional manual measurement positioning is large in deviation and low in efficiency are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and specifically to a construction method for positioning and controlling the protective layer during the installation of steel bars. Background Art

[0002] In the contemporary field of building engineering, as the main load-bearing system, the construction quality of reinforced concrete structures is directly related to the safety and durability of buildings. With the increasing complexity of building forms and the continuous improvement of construction standards, the precision control requirements for steel bar works are becoming increasingly strict. As the first line of defense against steel bar corrosion, the thickness deviation of the steel bar protective layer not only affects the structural durability but may also change the mechanical properties of the structure. Currently, higher standards for the positioning accuracy of steel bars are required in projects such as high-rise buildings and long-span structures, and traditional construction methods are facing new challenges.

[0003] During the construction process of steel bar installation, how to achieve precise positioning of steel bars and control of the protective layer thickness has always been a technical difficulty. Conventional construction methods mostly use manual measurement in combination with simple support devices, which have problems such as large positioning deviation and low efficiency. Especially in complex node parts where steel bars are densely interlaced, it is difficult for traditional positioning methods to ensure the accuracy of the spacing between steel bars in each layer and the thickness of the protective layer. At the same time, the vibration and impact during concrete pouring are likely to cause steel bar displacement, further increasing the difficulty of quality control. These problems are particularly prominent in large public buildings and infrastructure projects, and there is an urgent need to improve the construction technology to enhance the engineering quality control level. Summary of the Invention

[0004] The present invention aims to solve the above problems, and thus provides a construction method for positioning and controlling the protective layer during the installation of steel bars to prevent steel bar displacement.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: A construction method for positioning and controlling the protective layer during the installation of steel bars, characterized by comprising the following steps: S1: Determine the design requirements for the installation position of steel bars and the thickness of the protective layer.

[0006] S2: Prefabricate a number of positioning rods.

[0007] S3: Weld V-shaped positioning seats at the top of the positioning rods according to the spacing of the upper steel bars.

[0008] S4: Vertically weld connecting rods at the bottom of the positioning rods according to the spacing of the lower steel bars, and a cushion block is fixed at the bottom of the connecting rod.

[0009] S5: Screw a support frame for supporting the cushion block on the formwork, and use the cushion block to lift the lower steel bars.

[0010] S6: Snap the upper steel bars into the positioning seats correspondingly.

[0011] S7: Conduct three-dimensional detection using the steel bar cover thickness.

[0012] S8: Pour concrete after passing the acceptance.

[0013] The present invention adopting the above technical solution, compared with the prior art, its prominent features are: By prefabricating positioning rods in cooperation with V-shaped positioning seats and connecting rods with pads to form a three-dimensional positioning system, precise positioning and control of the steel bar cover thickness during the steel bar installation process are achieved, solving the problems of large deviation and low efficiency in traditional manual measurement and positioning; and effectively preventing the displacement of steel bars during the concrete pouring process, overcoming the technical problems of difficult steel bar positioning at complex node parts; through three-dimensional detection means, it is ensured that the cover thickness meets the design requirements, improving the durability and safety of the reinforced concrete structure. This method realizes the integrated construction of steel bar positioning and cover control, helps to improve the construction accuracy and efficiency, and is particularly suitable for engineering projects with high precision requirements for steel bar works such as high-rise buildings and long-span structures.

[0014] As a preference, a further technical solution of the present invention is: Furthermore, a threaded hole is provided at the center of the top of the pad, and the lower part of the connecting rod is a threaded structure and is screwed into the pad, realizing the detachable connection between the connecting rod and the pad, which is convenient for adjustment and maintenance during the construction process. The threaded connection method can ensure the connection stability, prevent loosening caused by the vibration during concrete pouring, and at the same time, the pads can be flexibly replaced according to different cover thickness requirements.

[0015] Furthermore, the opening angle of the positioning seat is between 45 - 90°, and this angle range design enables the V-shaped positioning seat to effectively clamp the upper steel bars with different diameters, and at the same time avoids the problems of difficult steel bar clamping caused by too small an angle or unstable positioning caused by too large an angle. The optimized opening angle can adapt to the installation requirements of various specifications of steel bars and improve the construction adaptability.

[0016] Furthermore, the pads are made of engineering plastics or precast concrete. The engineering plastic pads have the characteristics of light weight and corrosion resistance, which are convenient for on-site handling and installation; the precast concrete pads have good compatibility with the main structure materials and high strength matching. The two material selections can be flexibly selected according to the actual engineering needs, and both can effectively ensure the reliability of the cover thickness control.

[0017] Furthermore, a rubber layer is provided on the surface of the pad. The rubber layer can increase the friction force between the pad and the steel bar contact surface, effectively reducing the displacement of the steel bar; at the same time, it can buffer the impact force during concrete pouring and reduce the interference to the steel bar position. This design is particularly suitable for pouring working conditions with large vibration and helps to maintain the steel bar positioning accuracy.

[0018] Furthermore, the surface of the positioning seat is provided with anti-slip patterns, and the pattern structure increases the roughness of the contact surface, enhancing the biting effect on the steel bars. The micro-texture design can prevent the steel bars from generating micro-slip under vibration conditions. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the present invention; The markings in the figure are: positioning rod 1, positioning seat 2, connecting rod 3, cushion block 4. Specific Embodiments

[0020] The following further illustrates the present invention in conjunction with embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0021] A construction method for positioning and controlling the protective layer during the installation of steel bars, characterized by comprising the following steps: S1: Determine the design requirements for the installation position of the steel bars and the thickness of the protective layer.

[0022] S2: Prefabricate a plurality of positioning rods 1.

[0023] S3: Weld a V-shaped positioning seat 2 at the top of the positioning rod 1 according to the spacing of the upper steel bars.

[0024] S4: Vertically weld a connecting rod 3 at the bottom of the positioning rod 1 according to the spacing of the lower steel bars, and a cushion block 4 is fixed at the bottom of the connecting rod 3.

[0025] S5: A support frame for supporting the cushion block 4 is screwed on the formwork, and the lower steel bars are lifted by the cushion block 4. By pre-designing the length of the connecting rod 3, the heights of the lower steel bars and the upper steel bars meet the design requirements.

[0026] S6: The upper steel bars are correspondingly clamped into the positioning seat 2.

[0027] S7: Use a three-dimensional inspection for the thickness of the steel bar protective layer.

[0028] S8: Pour concrete after passing the acceptance.

[0029] Furthermore, a threaded hole is opened at the center of the top of the cushion block 4, and the lower part of the connecting rod 3 is a threaded structure and is screwed into the cushion block 4, realizing the detachable connection between the connecting rod 3 and the cushion block 4, which is convenient for adjustment and maintenance during the construction process. The threaded connection method can ensure the connection stability, prevent loosening caused by the vibration during concrete pouring, and at the same time, the cushion block 4 can be flexibly replaced according to different requirements for the thickness of the protective layer.

[0030] Furthermore, the opening angle of the positioning seat 2 is between 45° and 90°. This angle range is designed so that the V-shaped positioning seat 2 can effectively clamp the upper steel bars with different diameters, and at the same time avoid the problems of difficult clamping of steel bars caused by too small an angle or unstable positioning caused by too large an angle. The optimized opening angle can adapt to the installation requirements of steel bars of various specifications and improve the construction adaptability.

[0031] Furthermore, the spacer 4 is made of engineering plastic or precast concrete. The engineering plastic spacer 4 is light in weight and corrosion-resistant, which is convenient for on-site handling and installation; the precast concrete spacer 4 has good compatibility with the main structure material and high strength matching. The two material options can be flexibly selected according to the actual engineering needs, and both can effectively ensure the reliability of the protective layer thickness control.

[0032] Furthermore, the surface of the spacer 4 is provided with a rubber layer. The rubber layer can increase the friction force between the spacer 4 and the steel bar contact surface, effectively reducing the displacement of the steel bar; at the same time, it can buffer the impact force during concrete pouring and reduce the interference with the position of the steel bar. This design is particularly suitable for pouring conditions with large vibrations and helps to maintain the positioning accuracy of the steel bar.

[0033] Furthermore, the surface of the positioning seat 2 is provided with anti-slip lines. The line structure increases the roughness of the contact surface, improves the biting effect on the steel bar, and the micro-texture design can prevent the steel bar from generating micro-slip under vibration conditions.

[0034] By prefabricating the positioning rod 1, cooperating with the V-shaped positioning seat 2 and the connecting rod 3 with the spacer 4, a three-dimensional positioning system is formed, realizing the precise positioning and protective layer thickness control during the steel bar installation process, solving the problems of large positioning deviation and low efficiency in traditional manual measurement; and effectively preventing the displacement of steel bars during concrete pouring, overcoming the technical problem of difficult steel bar positioning at complex node parts; ensuring that the protective layer thickness meets the design requirements through three-dimensional detection means, improving the durability and safety of the reinforced concrete structure. This method realizes the integrated construction of steel bar positioning and protective layer control, helps to improve the construction accuracy and efficiency, and is particularly suitable for engineering projects with high precision requirements for steel bar works such as high-rise buildings and long-span structures.

[0035] The above is only a preferred and feasible embodiment of the present invention, and it does not limit the scope of the rights of the present invention. Any equivalent changes made by using the content of the specification and drawings of the present invention are included in the scope of the rights of the present invention.

Claims

1. A construction method for positioning and controlling the protective layer during the installation of steel bars, characterized in that: It includes the following steps: S1: Determine the design requirements for the installation position of steel bars and the cover thickness; S2: Prefabricate a number of positioning rods; S3: Weld V-shaped positioning seats at the top of the positioning rods according to the spacing of the upper steel bars; S4: Vertically weld connecting rods at the bottom of the positioning rods according to the spacing of the lower steel bars, and a cushion block is fixed at the bottom of the connecting rod; S5: Screw a support frame for supporting the cushion block on the formwork, and use the cushion block to lift the lower steel bars; S6: Corresponding insert the upper steel bars into the positioning seats; S7: Conduct three-dimensional detection using the steel bar cover thickness; S8: Pour concrete after passing the acceptance; 2. The construction method for positioning and controlling the protective layer during the steel bar installation process according to claim 1, characterized in that: A threaded hole is provided at the center of the top of the cushion block, and the lower part of the connecting rod is a threaded structure and is screwed into the cushion block; 3. The construction method for positioning and controlling the protective layer during the steel bar installation process according to claim 1, wherein: The opening angle of the positioning seat is between 45-90°; 4. The construction method for positioning and controlling the protective layer during the steel bar installation process according to claim 1, characterized in that: The cushion block is prefabricated from engineering plastic or concrete; 5. The construction method for positioning and controlling the protective layer during the steel bar installation process according to claim 1, characterized in that: A rubber layer is provided on the surface of the cushion block; 6. The construction method for positioning and controlling the protective layer during the steel bar installation process according to claim 1, wherein: Anti-slip grooves are provided on the surface of the positioning seat;

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