Installation method of high-precision concrete embedded parts

Abstract

The present invention relates to the field of building construction technology, and in particular to a method for installing high-precision concrete embedded parts. The method comprises the following steps: prefabricating a wooden formwork of the same size as the embedded part, drilling holes in the wooden formwork according to the position of the anchoring steel bars, accurately positioning the position of the anchoring steel bars using the wooden formwork, and closing the formwork for casting after binding; drilling holes to insert positioning screws; drilling holes in the embedded part according to the positions of the installed anchoring steel bars and the positioning screws; installing the embedded part on the anchoring steel bars, adjusting the verticality and flatness of the embedded part, and welding the embedded part and the anchoring steel bars after the embedded part is positioned; supporting a grouting formwork for the gap between the embedded part and the concrete protective layer, and grouting after the formwork is supported; removing the formwork after the concrete reaches a certain strength, and the embedded part is installed. The present invention solves the problem of substandard installation accuracy of embedded parts caused by deformation of the anchoring steel bars, shrinkage of the concrete, inaccurate formwork positioning, etc., thereby ensuring the installation accuracy of the embedded parts.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a method for installing high-precision concrete embedded parts. Background Art

[0002] During construction in the metallurgical and chemical production sectors, equipment installation requires high precision for embedded parts, especially for imported equipment, where installation accuracy must be controlled within a ±1mm tolerance. Conventional practice involves welding the embedded parts to the anchor bars, then tying them to the main structure's steel mesh via the anchor bars, and finally pouring the concrete. However, during the pouring process, any misalignment of the anchor bars can cause positioning errors in the embedded parts. Furthermore, concrete shrinkage and inadequate formwork reinforcement can also cause the embedded parts to shift, failing to achieve the required installation accuracy and making it impossible to proceed with equipment installation and subsequent construction work. Summary of the Invention

[0003] The embodiment of the present invention provides a method for installing high-precision concrete embedded parts, so as to achieve the technical effects of improving positioning accuracy and ensuring equipment installation quality.

[0004] One aspect of the present invention provides a method for installing high-precision concrete embedded parts, which is carried out according to the following steps:

[0005] S1. Install embedded parts and anchor steel bars

[0006] When tying concrete reinforcement, a wooden formwork of the same size as the embedded part is prefabricated according to the position diagram of the embedded part and the number of anchor bars. Holes are drilled on the wooden formwork according to the position of the anchor bars. The wooden formwork is used to accurately locate the position of the anchor bars. After the anchor bars are tied to the main structure steel mesh, the formwork is closed and poured;

[0007] The wooden formwork is installed 2-3 cm inward from the designed position of the embedded parts.

[0008] S2. Install the positioning screw

[0009] After the concrete pouring is completed and meets the design requirements, the formwork is removed, and the total station is used to accurately locate the surroundings of the embedded parts, and holes are drilled to insert the positioning screws;

[0010] S3. Install embedded parts

[0011] S31, processing embedded parts

[0012] Drill holes in the embedded parts according to the positions of the installed anchor bars and positioning screws;

[0013] S32. Install embedded parts

[0014] Before installing the embedded parts, roughen the surface of the concrete cover at the location covered by the embedded parts; first install the adjusting nut on the inside of the embedded parts on the positioning screw. After the positioning of the inner adjusting nut is completed, install the embedded parts and the outer adjusting nut; then install the embedded parts on the anchor steel bars. During installation, use the adjusting nuts on the inside and outside of the embedded parts to adjust the verticality and flatness of the embedded parts. After the positioning of the embedded parts is completed, weld the embedded parts and the anchor steel bars;

[0015] S33, grouting

[0016] After the welding of the embedded parts and the anchor steel bars is completed, the excess weld between the embedded parts and the anchor steel bars is ground and inspected. After the inspection is correct, a grouting template is set up for the gap between the embedded parts and the concrete protective layer. After the template is set up, grouting is carried out; after the grouting material reaches the strength, the template is removed and the installation of the embedded parts is completed.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention firstly uses a wooden formwork to accurately position the embedded steel bars during concrete pouring, then pours the concrete once, and then repositions the embedded parts after planting, uses positioning bolts to adjust the horizontality and verticality of the embedded parts, and then grouts them a second time, thereby ensuring the installation accuracy of the embedded parts, preventing the problem of substandard installation accuracy of the embedded parts caused by deformation of the anchor steel bars, shrinkage of the concrete, inaccurate formwork positioning, etc., and ensuring the normal progress of the process.

[0019] Furthermore, the preferred embodiment of the present invention is:

[0020] When processing embedded parts, if the drawings require pressure welding, change it to plug welding. When punching holes for anchor bars on embedded parts, the anchor bar holes on the embedded parts need to be grooved at 45°.

[0021] The diameter of the positioning hole opened in the embedded part corresponding to the embedded screw is 0.5mm larger than the screw diameter, and the drilling depth is the same as the thickness of the embedded part plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a construction diagram of the main structure and anchor steel bars;

[0025] Figure 3 This is a schematic diagram of the installation of the positioning screw;

[0026] Figure 4 Structural diagram for the installation of embedded parts;

[0027] Figure 5 for Figure 1 1-1 sectional view;

[0028] Figure 6 It is a structural diagram of embedded parts;

[0029] In the figure: positioning screw 1; adjusting nut 2; embedded part 3; anchor steel bar hole 4; anchor steel bar 5; secondary pouring layer 6; concrete cover 7; exhaust hole 8. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0031] A method for installing high-precision concrete embedded parts is carried out in the following steps:

[0032] S1. Install embedded parts and anchor steel bars

[0033] When tying the concrete reinforcement, the anchoring reinforcement 5 of the embedded part 3 is tied and fixed to the main reinforcement mesh of the concrete structure according to the position diagram of the embedded part drawing and the number of holes drilled for the anchoring reinforcement 5; when tying, a wooden template of the same size as the embedded part 3 is prefabricated, and holes are drilled on the wooden template according to the designed position of the anchoring reinforcement 5 on the embedded part 3. The position of the anchoring reinforcement 5 is accurately positioned using the wooden template. After the anchoring reinforcement 5 and the main structure reinforcement mesh are tied, the mold is closed and cast, so that the inner end of the anchoring reinforcement 5 is cast in the concrete, and the other end passes through the template and is reserved on the outside of the template.

[0034] When closing the mold, the position of the template is 2-3 cm inward from the designed position of the embedded part 3 (the side with the anchor steel bar installed is inward).

[0035] S2: Install the positioning screw

[0036] After the concrete pouring is completed, the formwork is removed after the concrete reaches the requirements for demoulding, and the positioning screw 1 is installed.

[0037] The positioning screw 1 is installed using the post-implantation method. A total station is used to accurately position the positioning screw 1 on the concrete protective layer 7 corresponding to the installation position of the positioning screw 1 around the embedded part 3. Then, an electric hammer is used to open a hole and the fully threaded positioning screw 1 is implanted. Two adjusting nuts 2 are added to each positioning screw 1 for use. The verticality and horizontality of the embedded part 3 are adjusted by the two adjusting nuts 2 on the positioning screw 1.

[0038] S3. Install embedded parts

[0039] S31, processing embedded parts

[0040] Drill holes in the corresponding locations of the embedded part 3 according to the distribution of the installed anchor bars 5 and the position of the positioning screws 1. When drilling, if the drawings require pressure welding, contact the design institute promptly to change to plug welding. The anchor bar holes 4 (plug welding holes) of the embedded part 3 require a 45° groove treatment. Drilling and groove treatment should be performed mechanically, and electric welding should be strictly used for groove treatment to reduce the thermal deformation rate of the embedded part. At the same time, when opening the positioning screw holes at the four corners of the embedded part 3, the hole size is determined by the diameter of the positioning screw 1, and the diameter of the positioning screw holes should be 0.5mm larger than the diameter of the positioning screw 1 to meet the adjustment requirements. The drilling depth should also be the same as the thickness of the embedded part 3 plate.

[0041] If the embedded part 3 is large in size, an exhaust hole 8 should be further provided on the embedded part 3 .

[0042] S32. Install embedded parts

[0043] Before installing the embedded part 3, the surface of the concrete protective layer 7 at the position covered by the embedded part 3 is roughened.

[0044] First, install the inner adjustment nut 2 of the embedded part 3 onto the positioning screw 1. After the inner adjustment nut 2 is positioned, install the embedded part 3 and the outer adjustment nut 2. Then, install the embedded part 3 onto the anchoring steel bar 5. During installation, use the inner and outer adjustment nuts 2 of the embedded part 3 to adjust the verticality and flatness of the embedded part 3. Use measuring tools to calibrate the installation process. After the embedded part 3 is positioned, weld the embedded part 3 to the anchoring steel bar 5. Use layered symmetrical welding. Check the accuracy of the embedded part 3 at all times during the welding process to prevent stress caused by welding from affecting the accuracy of the embedded part 3.

[0045] S33, grouting

[0046] After the welding of the embedded parts 3 and the anchor steel bars 5 is completed, the spatter generated during the welding process and the excess weld metal between the embedded parts 3 and the anchor steel bars 5 are ground and inspected with an angle grinder. After the inspection is complete, a grouting template is set up for the 2-3 cm gap between the embedded parts 3 and the concrete protective layer. After the template is set up, a non-shrinkage grouting material with a higher strength than the original structural concrete is used for grouting; after the concrete reaches the required strength, the template is removed and the installation of the embedded parts is completed.

[0047] This method is simple to construct, highly maneuverable, and low-cost, and is very suitable for on-site production. The embedded steel bars are accurately positioned during concrete pouring through wooden formwork to prevent problems with substandard installation accuracy of embedded parts caused by deformation of anchor steel bars, shrinkage of concrete, inaccurate formwork positioning, etc. The embedded parts are then implanted, and the horizontality and verticality of the embedded parts are adjusted through positioning bolts before secondary grouting to ensure the installation accuracy of the embedded parts and the normal progress of the process.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A method for installing high-precision concrete embedded parts, characterized in that: Follow these steps: S1. Install embedded parts and anchor steel bars When tying concrete reinforcement, a wooden formwork of the same size as the embedded part is prefabricated according to the position diagram of the embedded part and the number of anchor bars. Holes are drilled on the wooden formwork according to the position of the anchor bars. The wooden formwork is used to accurately locate the position of the anchor bars. After the anchor bars are tied to the main structure steel mesh, the formwork is closed and poured; When closing the mold, the template is positioned 2-3 cm inward from the designed position of the embedded part, with the side where the anchor steel bars are installed as the inner side; S2: Install the positioning screw After the concrete pouring is completed and meets the design requirements, the formwork is removed, and the total station is used to accurately locate the surroundings of the embedded parts, and holes are drilled to insert the positioning screws; S3. Install embedded parts S31, processing embedded parts Drill holes in the embedded parts according to the positions of the installed anchor bars and positioning screws; S32. Install embedded parts Before installing the embedded parts, roughen the surface of the concrete cover at the location covered by the embedded parts; first install the adjusting nut on the inside of the embedded parts on the positioning screw. After the positioning of the inner adjusting nut is completed, install the embedded parts and the outer adjusting nut; then install the embedded parts on the anchor steel bars. During installation, use the adjusting nuts on the inside and outside of the embedded parts to adjust the verticality and flatness of the embedded parts. After the positioning of the embedded parts is completed, weld the embedded parts and the anchor steel bars; S33, grouting After the welding of the embedded parts and the anchor steel bars is completed, the excess weld metal between the embedded parts and the anchor steel bars is ground and inspected. After the inspection is complete, a grouting template is set up for the gap between the embedded parts and the concrete cover. After the template is set up, grouting is performed. After the concrete reaches the required strength, the formwork is removed and the installation of embedded parts is completed.

2. The installation method of high-precision concrete embedded parts according to claim 1, characterized in that: When processing embedded parts, if the drawings require pressure welding, change it to plug welding. When punching holes for anchor bars on embedded parts, the anchor bar holes on the embedded parts need to be grooved at 45°.

3. The installation method of high-precision concrete embedded parts according to claim 1, characterized in that: The diameter of the positioning hole opened in the embedded part corresponding to the embedded screw is 0.5mm larger than the screw diameter, and the drilling depth is the same as the thickness of the embedded part plate.

Images