Equipment foundation expansion joint node structure

Abstract

The invention belongs to the technical field of industrial building design, and particularly relates to an equipment foundation expansion joint structure which comprises foundation structures on the two sides, a water stop steel plate and an embedded glue line, the embedded glue line is arranged between the foundation structures on the two sides, and the water stop steel plate is perpendicular to the embedded glue line and embedded in the foundation structures on the two sides. Upper and lower groups of closed reinforcing meshes are arranged in the foundation structures on the two sides and are connected through reinforcing steel bars. Compared with the prior art, the closed reinforcing meshes and the anti-shearing short sliding rods are arranged in the foundation structures on the two sides, so that shearing force generated by foundation settlement can be jointly resisted, and the purpose of preventing the position of the expansion joint from being damaged due to differential settlement is achieved. In addition, the anti-shearing short sliding rod is arranged in the steel pipe sleeve, so that it is guaranteed that the anti-shearing short sliding rod can deform leftwards and rightwards, and it is guaranteed that horizontal deformation of the foundation is not affected.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial building design, and in particular relates to an equipment foundation expansion joint node structure. Background Art

[0002] Expansion joints in equipment foundations are artificial gaps created within foundation components to prevent cracking caused by factors such as temperature fluctuations, concrete shrinkage, or uneven foundation settlement. They relieve internal structural stress, preventing crack expansion and impacting foundation stability; accommodate ambient temperature fluctuations (thermal expansion and contraction) and material deformation; and ensure secure connections between the foundation and overhead equipment, preventing equipment failures caused by foundation deformation. Therefore, properly designed expansion joints can effectively improve the durability and safety of equipment foundations and avoid potential engineering risks caused by deformation.

[0003] However, existing equipment foundation expansion joint node structures do not account for differences in the bearing strata on either side of the foundation. Large differences in foundation stiffness can lead to uneven settlement, which can cause shearing of the waterstop steel plate and easily breakage. Excessive differences in foundation settlement can also damage the connection, creating safety risks.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The object of the present invention is to provide an equipment foundation expansion joint node structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A node structure of an equipment foundation expansion joint includes foundation structures on both sides, waterstop steel plates and glued joints. The glued joints are arranged between the foundation structures on both sides. The waterstop steel plates are perpendicular to the glued joints and buried in the foundation structures on both sides. Two upper and lower groups of closed steel meshes are arranged in the foundation structures on both sides, and the upper and lower groups of closed steel meshes are connected by reinforcing steel bars.

[0008] Preferably, the thickness of the basic structures on both sides is greater than 300 mm.

[0009] Preferably, the foundation structure on one side is connected to the reinforced concrete side wall, and an L-shaped side wall cantilever is provided on the reinforced concrete side wall. One side of the side wall cantilever is connected to the reinforced concrete side wall, and the other side is connected to the foundation structure supporting the connection with the reinforced concrete side wall.

[0010] Preferably, a supporting corbel is further provided on the reinforced concrete side wall, and a supporting surface of the supporting corbel is connected to support a base structure on the other side.

[0011] Preferably, an asphalt coating is provided on the supporting surface where the supporting corbel is connected to the base structure on the other side.

[0012] Preferably, it also includes a shear-resistant sliding rod and a steel pipe sleeve, wherein the steel pipe sleeve is buried in the basic structure on one side, one end of the shear-resistant sliding rod extends into the steel pipe sleeve, and the other end is buried in the basic structure on the other side.

[0013] Preferably, the anti-shear sliding rod is arranged on the back water side of the waterstop steel plate.

[0014] Preferably, the shear-resistant sliding rod is made of HPB300 grade round steel bar, and the diameter of the shear-resistant sliding rod is not less than 18 mm, the length is not less than 20 times the diameter of the shear-resistant sliding rod, and the spacing between adjacent shear-resistant sliding rods is not less than 250 mm.

[0015] Compared with existing technologies, this invention offers the following advantages: Enclosed steel mesh and shear-resistant sliding bars are installed in the foundation structure on both sides, effectively counteracting the shear force generated by foundation settlement, thereby preventing damage to the expansion joint due to differential settlement. Furthermore, the shear-resistant sliding bars are installed in steel pipe sleeves, ensuring that they can deform left and right, ensuring that horizontal deformation of the foundation is not affected.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the equipment foundation expansion joint node structure in the prior art.

[0019] Figure 2 This is a schematic diagram of an equipment foundation expansion joint node structure provided in Example 1 of the present invention.

[0020] Figure 3 This is a schematic diagram of an equipment foundation expansion joint node structure provided in Example 2 of the present invention.

[0021] Figure 4 This is a schematic diagram of an equipment foundation expansion joint node structure provided in Example 3 of the present invention.

[0022] Figure 5This is a schematic diagram of an equipment foundation expansion joint node structure provided in Example 4 of the present invention.

[0023] The diagram is as follows:

[0024] 1. Waterstop steel plate; 2. Glued joint; 3. Structural reinforcement; 4. Enclosed steel mesh; 5. Reinforcement steel; 6. Shear-resistant short slide bar; 7. Steel pipe sleeve; 8. Foundation structure; 9. Reinforced concrete side wall; 10. Side wall cantilever; 11. Backfill; 12. Support corbel; 13. Asphalt coating. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0026] Expansion joints in equipment foundations are artificial gaps created within foundation components to prevent cracking caused by factors such as temperature fluctuations, concrete shrinkage, or uneven foundation settlement. They relieve internal structural stress, preventing crack expansion and impacting foundation stability; accommodate ambient temperature fluctuations (thermal expansion and contraction) and material deformation; and ensure secure connections between the foundation and overhead equipment, preventing equipment failures caused by foundation deformation. Therefore, properly designed expansion joints can effectively improve the durability and safety of equipment foundations and avoid potential engineering risks caused by deformation.

[0027] However, if Figure 1 As shown, in existing equipment foundation expansion joint node structures, only structural reinforcement 3 is provided in the foundation structure 8, without considering the differences in the bearing strata on both sides of the foundation structure. When the foundation stiffness differs significantly on both sides, uneven settlement occurs, and the waterstop steel plate is sheared, easily shearing. When the foundation settlement difference on both sides of the expansion joint is too large, the connection point may be damaged, creating a safety hazard.

[0028] Therefore, embodiment 1 of the present invention provides an equipment foundation expansion joint node structure, including foundation structures 8 on both sides, waterstop steel plates and glue joints 2, the glue joints 2 are arranged between the foundation structures 8 on both sides, the waterstop steel plates are perpendicular to the glue joints 2 and are buried in the foundation structures 8 on both sides, and two upper and lower groups of closed steel meshes 4 are arranged in the foundation structures 8 on both sides, and the upper and lower groups of closed steel meshes 4 are connected by reinforcing steel bars 5.

[0029] In a preferred embodiment of this first embodiment, the equipment foundation expansion joint node structure further includes a shear-shortening slide bar 6 and a steel pipe sleeve 7. The steel pipe sleeve 7 is embedded in the foundation structure 8 on one side. One end of the shear-shortening slide bar 6 extends into the steel pipe sleeve 7, and the other end is embedded in the foundation structure 8 on the other side. The shear-shortening slide bar 6 is located on the water-repellent side of the waterstop steel plate 1. The shear-shortening slide bar 6 is constructed of HPB300 grade plain round steel bars, with a diameter of no less than 18 mm and a length no less than 20 times the diameter of the shear-shortening slide bar 6. The spacing between adjacent shear-shortening slide bars 6 is no less than 250 mm. Therefore, when the foundation structures 8 on both sides of the expansion joint have comparable rigidity and the equipment foundation is located in a relatively uniform, non-weak soil layer, the shear-shortening slide bar 6 is installed in the expansion joint, and a closed steel mesh 4 is installed on both sides of the foundation. The shear-shortening slide bar and the steel mesh jointly resist the shear force generated by foundation settlement, thereby preventing damage to the expansion joint due to differential settlement. Owing to arrange the short sliding bar and steel mesh of resisting shearing, require foundation thickness now and should not be less than 300mm.In addition, the short sliding bar of resisting shearing is arranged in the steel pipe sleeve 7, guarantees like this that the short sliding bar of resisting shearing can be deformed about, guarantees that foundation horizontal deformation is not affected.

[0030] When the foundation settlement on the left and right sides is equivalent, Example 2 of the present invention provides an equipment foundation expansion joint node structure. On the basis of Example 1, the foundation structure 8 on one side is connected to the reinforced concrete side wall 9, and an L-shaped side wall cantilever 10 is arranged on the reinforced concrete side wall 9. One side of the side wall cantilever 10 is connected to the reinforced concrete side wall 9, and the other side is connected to the foundation structure 8 supporting the connection with the reinforced concrete side wall 9.

[0031] When the foundation settlement on the right is greater than that on the left, embodiment three of the present invention provides an equipment foundation expansion joint node structure, and a support corbel 12 is further provided on the reinforced concrete side wall 9, and the support surface of the support corbel 12 is connected to the foundation structure 8 on the other side. An asphalt coating 13 is provided on the support surface where the support corbel 12 is connected to the foundation structure 8 on the other side. In this embodiment, since the outward extending corbel has a large rigidity and strong shear resistance, it is not necessary to provide a shear-resistant shortening slide bar, but in this case it is necessary to provide an asphalt coating 13 at the position where the corbel intersects the foundation to ensure that the foundations on both sides of the expansion joint can deform freely in the horizontal direction. The structure in this embodiment is suitable for the situation where the equipment foundation and the pipeline corridor foundation are located in the same bearing layer, and only a part of the expansion joint section is backfill soil 11.

[0032] When the equipment foundation and the underground corridor are located in different bearing layers and the difference is large, embodiment 4 of the present invention provides an equipment foundation expansion joint node structure, and one or more groups of equipment foundation expansion joint node structures are added on the basis of the embodiment, and transition sections are added to reduce damage to the foundation at the expansion joint position due to differential settlement.

[0033] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0035] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention. It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

Claims

1. An equipment foundation expansion joint node structure, comprising foundation structures on both sides, water-stop steel plates and a caulking joint, wherein the caulking joint is arranged between the foundation structures on both sides, and the water-stop steel plates are perpendicular to the caulking joint and embedded in the foundation structures on both sides, characterized in that: Two sets of upper and lower closed steel meshes are provided in the foundation structures on both sides, and the upper and lower sets of closed steel meshes are connected by reinforcing steel bars.

2. The equipment foundation expansion joint node structure according to claim 1, characterized in that: The thickness of the foundation structure on both sides is greater than 300mm.

3. The equipment foundation expansion joint node structure according to claim 2, characterized in that: The foundation structure on one side is connected to the reinforced concrete side wall, and an L-shaped side wall cantilever is set on the reinforced concrete side wall. One side of the side wall cantilever is connected to the reinforced concrete side wall, and the other side is connected to the foundation structure connected to the reinforced concrete side wall.

4. The equipment foundation expansion joint node structure according to claim 3, characterized in that: A supporting corbel is also provided on the reinforced concrete side wall, and a supporting surface of the supporting corbel is connected to support the foundation structure on the other side.

5. The equipment foundation expansion joint node structure according to claim 4, characterized in that: An asphalt coating is provided on the supporting surface where the supporting corbel is connected to the base structure on the other side.

6. The equipment foundation expansion joint node structure according to claim 4, characterized in that: It also includes a shear-resistant sliding rod and a steel pipe sleeve. The steel pipe sleeve is buried in the basic structure on one side. One end of the shear-resistant sliding rod extends into the steel pipe sleeve, and the other end is buried in the basic structure on the other side.

7. The equipment foundation expansion joint node structure according to claim 6, characterized in that: The anti-shear shortening sliding rod is arranged on the back water side of the water stop steel plate.

8. The equipment foundation expansion joint node structure according to claim 7, characterized in that: The shear-resistant sliding rod is made of HPB300 grade round steel bar, and the diameter of the shear-resistant sliding rod is not less than 18 mm, the length is not less than 20 times the diameter of the shear-resistant sliding rod, and the spacing between adjacent shear-resistant sliding rods is not less than 250 mm.

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