Construction method of foundation structure of heavy production equipment

Abstract

The invention discloses a construction method for a foundation structure of heavy production equipment. The construction method comprises the steps that a concrete cushion layer is constructed, and a lower supporting unit is installed; lower-layer concrete is poured on the concrete cushion layer; the sleeves are correspondingly inserted into the lower supporting rods, and the height of the upper supporting rods is adjusted, so that the levelness of the embedded steel plate is within the design range; the upper supporting rod and the embedded steel plate are connected through plug welding; and grout is poured into a cavity between the sleeve and the lower supporting rod, and upper-layer concrete is constructed. The positioning steel plate is firstly poured and fixed, then the upper supporting rods and the pre-embedded steel plate are installed on the lower supporting rods, the height of each upper supporting rod is adjusted through the leveling nuts, then leveling of the pre-embedded steel plate is achieved, and the levelness of the pre-embedded steel plate is ensured; the cavities and gaps of the upper supporting rods and the lower supporting rods are filled with grouting materials or structural adhesives, then an integrated bearing system is formed, the situation that the embedded steel plate moves relative to the positioning steel plate due to concrete pouring is effectively avoided, and the positioning precision of the embedded steel plate is improved.

Description

Technical Field

[0001] This invention relates to the field of installation of heavy production equipment in workshops, and in particular to a construction method for the foundation structure of heavy production equipment. Background Technology

[0002] In the production and processing of large and medium-sized mechanical parts, heavy industrial production equipment, such as large hydraulic presses, is often required. These production equipment require pre-installed foundation steel plates (i.e., pre-embedded steel plates partially embedded in the concrete foundation layer) during the civil construction phase of the industrial plant. Currently, the pre-embedded steel plates and their accessories are welded to the reinforcing cage of the concrete foundation before pouring the concrete. However, this structure has the following drawbacks in actual construction: Firstly, the reinforcing cage is prone to swaying and deformation, making it impossible to accurately position the pre-embedded steel plates, resulting in unsuitable or tilted positions after final construction. Secondly, the impact of concrete and subsequent vibration can also cause the pre-embedded steel plates to deviate from their positions, making it difficult to ensure that the height and angle of the pre-embedded steel plates meet the requirements, thus affecting normal use. Summary of the Invention

[0003] In view of this, the present invention proposes a construction method for the foundation structure of heavy production equipment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The construction method for the foundation structure of heavy production equipment according to the present invention includes the following: The first step is to excavate at the designed location and construct a concrete foundation layer; The second step is to weld multiple lower support rods onto the positioning steel plate to form a lower support unit, and then horizontally install the lower support unit on the concrete pad; wherein, the upper part of the lower support rod is a threaded section; The third step is to tie the steel cage on the concrete foundation, pour the lower layer of concrete, expose the threaded section of the lower support rod, and screw the leveling nut on the upper support rod. The fourth step is to insert the upper support rod with a sleeve at the bottom into the positioning hole of the embedded steel plate. After the lower concrete has solidified, insert the sleeve into the lower support rod and limit the sleeve with the leveling nut. Adjust the height of the upper support rod by turning the leveling nut so that the levelness of the embedded steel plate is within the design range. Fifth step: After the embedded steel plate is adjusted to the correct position, weld the upper support rod and the embedded steel plate together. The sleeve has a grouting hole, through which grout is injected into the cavity between the sleeve and the lower support rod. After the grout solidifies, it will fix the sleeve and the lower support rod into a whole. The sixth step is to construct the upper layer of concrete, pouring it to the bottom surface of the embedded steel plate.

[0005] The beneficial effects are as follows: This invention achieves leveling and positioning of the embedded steel plate through a positioning steel plate, a lower support rod, and an upper support rod positioned on a concrete foundation. During construction, the positioning steel plate and the lower support rod are first fixed using the lower concrete layer. Then, the upper support rod and the embedded steel plate are installed on the lower support rod. The height of each upper support rod is adjusted by adjusting the leveling nut, thereby achieving leveling of the embedded steel plate and ensuring its horizontality. Grouting material or structural adhesive is injected into the cavities of the upper and lower support rods. Since there is also a gap between the sleeve and the lower support rod, the air in the cavity is discharged through the gap during injection, and the grouting material fills the cavity and gap, thereby making the upper and lower support rods form an integrated load-bearing system. This effectively avoids the movement of the embedded steel plate relative to the positioning steel plate due to the pouring of concrete, and improves the positioning accuracy of the embedded steel plate.

[0006] In addition, since the upper support rod and the lower support rod are fixed together as a whole, the force borne by the embedded steel plate is transmitted downward to the lower support rod through the upper support rod, thereby improving the overall load-bearing capacity of the upper and lower support rods and preventing the embedded steel plate from sinking or deforming during subsequent use.

[0007] Preferably, in the fifth step, grout is injected using a grouting mold. The grouting mold includes a grouting hopper that is wider at the top and narrower at the bottom, and multiple grouting pipes connected to the grouting hopper. The grouting hopper is connected to injection holes through the multiple grouting pipes. In actual injection, grout can be injected into multiple cavities simultaneously through the grouting hopper, improving efficiency. Of course, in actual injection, grout can also be injected individually.

[0008] Preferably, the inner cross-section of the sleeve is a regular hexagonal structure. Attached Figure Description

[0009] Figure 1 This is a construction flowchart of the present invention.

[0010] Figure 2 This is a schematic diagram of the connection between the upper support rod and the lower support rod in this invention.

[0011] Figure 3 This is a top view of the injection mold. Detailed Implementation

[0012] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given. However, the scope of protection of the present invention is not limited to the following embodiments.

[0013] It should be noted that, in the description of this invention, relational terms such as “first” and “second” are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0014] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0015] Combination Figure 1 It is understood that the construction method for the foundation structure of heavy production equipment of the present invention includes the following: The first step is to excavate at the designed location and construct the concrete foundation layer 1; The second step is to weld multiple lower support rods 3 onto the positioning steel plate 2 to form a lower support unit (in this embodiment, four lower support rods 3 are preferred, but multiple rods can also be arranged circumferentially), and then horizontally install the lower support unit onto the concrete pad 1; wherein, the upper part of the lower support rod 3 is a threaded section. The third step is to tie the steel cage on the concrete pad 1 and pour the lower concrete F. The height of the lower concrete F is lower than the support height of the lower support rod 3, ensuring that the threaded section of the lower support rod 3 is exposed in the lower concrete F. After the lower concrete F solidifies, the lower support unit is fixed to facilitate the connection between the upper support rod 4 and the lower support rod 3. The fourth step is to insert the upper support rod 4 with the sleeve 7 at the bottom into the positioning hole of the pre-embedded steel plate 5. After the lower concrete F has solidified, screw a leveling nut 6 on each upper support rod 4 and insert the sleeve 7 into the lower support rod 3 accordingly. Use the leveling nut 6 to limit the sleeve 7. Adjust the height of the upper support rod 4 by screwing the leveling nut 6 so that the levelness of the pre-embedded steel plate 5 is within the design range. Among them, due to the clearance fit between the sleeve 7 and the lower support rod 3, the support height of the upper support rod 4 can be adjusted when the leveling nut 6 is used. During the leveling process, the level of the embedded steel plate 5 is detected by a level instrument to ensure that the level of the embedded steel plate 5 is within the design range. Fifth step: After the embedded steel plate 5 is adjusted into place, the upper support rod 4 and the embedded steel plate 5 are plug-welded together; there is a cavity 8 between the sleeve 7 and the lower support rod 3. A grouting hole is opened on the sleeve 7, and grout (such as cement grout or epoxy resin, etc.) is injected into the cavity 8 between the sleeve 7 and the lower support rod 3 through the grouting hole; due to the gap between the sleeve 7 and the lower support rod 3, the air in the cavity 8 is discharged through the gap, and the grouting material fills the cavity 8 and the gap, so that the upper support rod 4 and the lower support rod 3 form an integrated load-bearing system (see Figure 2 This prevents the embedded steel plate 5 from moving relative to the positioning steel plate 2 due to concrete pouring, thus ensuring the accuracy of the embedded steel plate 5. Step 6: Pour the upper layer of concrete up to the bottom surface of the embedded steel plate 5.

[0016] In the fifth step, the grout is poured in using a casting mold. (Combined) Figure 3 It is understood that the grouting mold includes a grouting hopper 9 (larger at the top and smaller at the bottom) and multiple grouting pipes 10 connected to the grouting hopper 9. The grouting hopper 9 is connected to the grouting holes through multiple grouting pipes 10 (the grouting pipes and grouting holes are inserted into each other for easy insertion and removal). During grouting, grout can be poured into the grouting hopper 9, and the grout can be simultaneously injected into multiple cavities 8 by gravity. After grouting, the grouting mold can be removed.

[0017] This invention achieves leveling and positioning of the embedded steel plate 5 using a positioning steel plate 2, a lower support rod 3, and an upper support rod 4 positioned on a concrete foundation layer 1. During construction, the positioning steel plate 2 and the lower support rod 3 are first fixed using the lower layer of concrete F. Then, the upper support rod 4 and the embedded steel plate 5 are installed on the lower support rod 3. The height of each upper support rod 4 is adjusted using leveling nuts 6, thereby achieving leveling of the embedded steel plate 5 and ensuring its horizontality. Grouting material or structural adhesive is injected into the cavities 8 of the upper support rod 4 and the lower support rod 3. Since there is also a gap between the sleeve 7 and the lower support rod 3, air in the cavity 8 is discharged through the gap during injection, and the grouting material fills the cavity 8 and the gap, thus forming an integrated load-bearing system between the upper support rod 4 and the lower support rod 3. This effectively prevents the embedded steel plate 5 from moving relative to the positioning steel plate 2 due to concrete pouring, improving the positioning accuracy of the embedded steel plate 5. In addition, since the upper support rod 4 and the lower support rod are fixed together as a whole, the force borne by the embedded steel plate 5 is transmitted downward to the lower support rod 3 through the upper support rod 4, thereby improving the overall load-bearing capacity of the upper support rod 4 and the lower support rod 3, and preventing the embedded steel plate 5 from sinking or deforming during subsequent use.

[0018] Finally, it should be emphasized that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for the foundation structure of heavy production equipment, characterized in that, Includes the following: The first step is to excavate at the designed location and construct a concrete foundation layer; The second step is to weld multiple lower support rods onto the positioning steel plate to form a lower support unit, and then horizontally install the lower support unit on the concrete pad; wherein, the upper part of the lower support rod is a threaded section; The third step is to tie the steel cage on the concrete foundation, pour the lower layer of concrete, expose the threaded section of the lower support rod, and screw the leveling nut on the upper support rod. The fourth step is to insert the upper support rod with a sleeve at the bottom into the positioning hole of the embedded steel plate. After the lower concrete has solidified, insert the sleeve into the lower support rod and limit the sleeve with the leveling nut. Adjust the height of the upper support rod by turning the leveling nut so that the levelness of the embedded steel plate is within the design range. Fifth step: After the embedded steel plate is adjusted to the correct position, weld the upper support rod and the embedded steel plate together. The sleeve has a grouting hole, through which grout is injected into the cavity between the sleeve and the lower support rod. After the grout solidifies, it will fix the sleeve and the lower support rod into a whole. The sixth step is to construct the upper layer of concrete, pouring it to the bottom surface of the embedded steel plate.

2. The construction method for the foundation structure of heavy production equipment according to claim 1, characterized in that: In the fifth step, grout is injected using a grouting mold, which includes a grouting hopper that is larger at the top and smaller at the bottom, and a plurality of grouting pipes connected to the grouting hopper. The grouting hopper is connected to the grouting holes through the plurality of grouting pipes.

3. The construction method for the foundation structure of heavy production equipment according to claim 1, characterized in that: The inner cross-section of the sleeve is a regular hexagonal structure.

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