Composite foundation for machine tool equipment foundation

Abstract

The utility model relates to a composite foundation for a machine tool equipment foundation. The composite foundation comprises a cushion layer and a plurality of pile bodies, the pile bodies are cement-soil mixing piles, the length directions of the pile bodies are vertically arranged, the top ends of the pile bodies are flush, the bottom ends of the pile bodies penetrate through a soft soil layer and are embedded into a bearing layer, the pile bodies are arranged in a rectangular array mode in the horizontal direction, and the distance between the axes of every two adjacent pile bodies is smaller than the diameter of each pile body. An overlapping area is formed between every two adjacent pile bodies; the bottom face of the cushion layer is connected with the top ends of the pile bodies. The utility model has the advantages that the construction cost is relatively low, and meanwhile, the requirements of equipment on high stability and high shock resistance can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a composite foundation for machine tool equipment. Background Art

[0002] In areas with soft soil, composite foundations are usually built to support the foundation of installed building structures, such as the Chinese utility model patent with publication number CN220266619U and patent name "a composite foundation structure for deep silt soil layers". In the installation scenario of large machine tools, such as the Parma boring machine SPEEDRAM 3000, the equipment has a volume of 13.62m×19.14m×4.3m and a maximum dynamic load of about 100 tons. Due to the large volume, high maximum dynamic load and high operating precision of the large machine tool equipment, the equipment foundation needs to have high anti-settlement, anti-tilting and seismic performance. The existing composite foundation cannot meet the load-bearing requirements of the foundation of large machine tools. In addition, the existing composite foundation has poor water-stopping performance. In a geological environment with abundant groundwater inflow, it cannot effectively block the flow and infiltration of groundwater, and it is easy to cause corrosion to the foundation installed on the composite foundation. Utility Model Content

[0003] The utility model aims to provide a composite foundation for machine tool equipment, which has the advantages of relatively low construction cost, high stability, good earthquake resistance and the like.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a composite foundation for machine tool equipment includes a cushion layer and a plurality of pile bodies; each pile body is a cement soil mixing pile, the length direction of each pile body is arranged vertically, the top of each pile body is flush, the bottom end of each pile body passes through the soft soil layer and is embedded in the bearing layer, the plurality of pile bodies are arranged in a rectangular array in the horizontal direction, the axial distance between each adjacent two pile bodies is less than the pile diameter of the pile body, so that an overlapping area is formed between each adjacent two pile bodies; the bottom surface of the cushion layer is connected to the top of each pile body.

[0005] The working principle of this utility model:

[0006] By forming an overlapping area between each two adjacent piles, each two adjacent piles are made continuous; on the one hand, such a structure connects the piles of the composite foundation to form an integral structure, so that the composite foundation has good anti-settling, anti-tilting and earthquake resistance, increases the stability of the machine tool equipment foundation, reduces the vibration generated during the operation of the machine tool equipment and prevents the impact on its processing accuracy; on the other hand, this can make the composite foundation have good water-stopping performance, can effectively block the flow and penetration of groundwater, and prevent corrosion to the machine tool equipment foundation.

[0007] Furthermore, in the composite foundation for machine tool equipment as mentioned above, the difference between the axial center distance between each two adjacent pile bodies and the pile diameter of the pile body is in the range of 50 mm to 150 mm.

[0008] Furthermore, in the composite foundation for machine tool equipment as mentioned above, the pile diameter of each pile body is in the range of 500 mm to 700 mm.

[0009] Furthermore, in the composite foundation for machine tool equipment as mentioned above, the bottom end of each pile is embedded in the bearing layer to a depth greater than 2m.

[0010] Furthermore, in the composite foundation for the machine tool equipment foundation as mentioned above, the cushion layer is made of concrete, and the thickness of the cushion layer is in the range of 100 mm to 200 mm.

[0011] Furthermore, the composite foundation for machine tool equipment foundation as mentioned above also includes a foundation bottom plate, which is arranged on the top surface of the cushion layer, and a steel cage is arranged in the foundation bottom plate and concrete is poured, and the steel cage includes a plurality of steel layers and a plurality of supporting steel bars; the plurality of steel layers are arranged in sequence from bottom to top, and each adjacent 2 steel layers are arranged at intervals, and each steel layer is a mesh structure formed by staggered arrangement of a plurality of transverse steel bars and a plurality of longitudinal steel bars; each supporting steel bar is connected and fixed to each steel layer.

[0012] Furthermore, as mentioned above, for the composite foundation for machine tool equipment, the total thickness of the foundation slab is in the range of 900 mm to 1000 mm, and the spacing between each adjacent two layers of steel bars of the steel cage is in the range of 250 mm to 300 mm.

[0013] Furthermore, the composite foundation for machine tool equipment foundation as mentioned above also includes a foundation pit bottom plate and a foundation pit side wall; the foundation pit bottom plate is made of reinforced concrete, and the foundation pit bottom plate is arranged between the cushion layer and the foundation bottom plate; the foundation pit side wall is made of reinforced concrete, and the bottom end of the foundation pit side wall is connected to the foundation pit bottom plate to form a whole, so that the foundation pit side wall and the foundation pit bottom plate enclose a foundation pit.

[0014] Furthermore, the composite foundation for machine tool equipment as mentioned above also includes a supporting structure, and the supporting structure is arranged along the outer side of the foundation pit side wall.

[0015] Furthermore, for the composite foundation for machine tool equipment as mentioned above, the thickness of the foundation pit bottom plate is in the range of 200 mm to 300 mm, and the thickness of the foundation pit side wall is in the range of 200 mm to 300 mm.

[0016] The technical solution of the utility model has the following beneficial effects: it has the advantages of relatively low construction cost, while also being able to meet the requirements of the equipment for high stability and high earthquake resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the plan structure of the foundation pit of the embodiment;

[0018] Figure 2 for Figure 1 The cross-sectional structure diagram in the AA direction;

[0019] Figure 3 A schematic diagram of the pile layout of an embodiment;

[0020] Figure 4 A schematic diagram of the internal structure of the base plate of an embodiment;

[0021] Description of reference numerals:

[0022] 1-pile body; 11-overlapping area; 2-cushion layer; 3-support structure; 4-foundation pit floor; 5-foundation pit side wall; 6-foundation pit; 7-foundation floor; 71-rebar cage; 711-rebar layer; 7111 transverse reinforcement; 7112-longitudinal reinforcement; 712-support reinforcement. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0024] like Figures 1 to 4 The composite foundation for machine tool equipment of the embodiment includes a cushion layer 2 and a plurality of pile bodies 1; each pile body 1 is a cement soil mixing pile, the length direction of each pile body 1 is arranged vertically, the top of each pile body 1 is flush, the bottom end of each pile body 1 passes through the soft soil layer and is embedded in the bearing layer. The bearing layer of this embodiment is a medium sand layer, and the depth of the bottom end of each pile body 1 embedded in the bearing layer is greater than 2m. The plurality of pile bodies 1 are arranged in a rectangular array in the horizontal direction, and the axis between each adjacent two pile bodies 1 is The spacing is smaller than the pile diameter of the pile body 1. Specifically, the pile diameter D1 of each pile body 1 is 600 mm, and the difference between the axial spacing between each two adjacent pile bodies 1 and the pile diameter of the pile body 1 is 100 mm, that is, the axial spacing D2 between each two adjacent pile bodies 1 is 500 mm, so that an overlapping area 11 is formed between each two adjacent pile bodies 1; the cushion layer 2 is made of concrete, the bottom surface of the cushion layer 2 is connected to the top of each pile body 1, and the thickness H1 of the cushion layer 2 is 100 mm.

[0025] The working principle of this embodiment:

[0026] By forming an overlapping area 11 between each two adjacent pile bodies 1, each two adjacent pile bodies 1 are made continuous; on the one hand, such a structure connects the pile bodies 1 of the composite foundation to form an integral structure, so that the composite foundation has good anti-settling, anti-tilting and earthquake-resistant properties, increases the stability of the machine tool equipment foundation, reduces the vibration generated during the operation of the machine tool equipment and prevents the impact on its processing accuracy; on the other hand, this can make the composite foundation have good water-stopping properties, can effectively block the flow and penetration of groundwater, and prevent corrosion to the machine tool equipment foundation.

[0027] like Figure 1 and Figure 2 As shown, this embodiment also includes a supporting structure 3, a foundation pit bottom plate 4 and a foundation pit side wall 5. The supporting structure 3 is arranged along the outer edge of the cushion layer 2. The foundation pit bottom plate 4 is made of reinforced concrete, and the thickness H2 of the foundation pit bottom plate 4 is 200mm. The foundation pit bottom plate 4 is covered on the cushion layer 2; the foundation pit side wall 5 is made of reinforced concrete, and the thickness H3 of the foundation pit side wall 5 is 250mm. The bottom end of the foundation pit side wall 5 is connected to the foundation pit bottom plate 4 to form a whole, so that the foundation pit side wall 5 and the foundation pit bottom plate 4 enclose a foundation pit 6, and the supporting structure 3 is arranged along the outer side of the foundation pit side wall 5. The foundation pit 6 can provide a stable supporting structure for the machine tool equipment foundation, and has good seismic performance.

[0028] like Figure 2 and Figure 4As shown, this embodiment also includes a foundation slab 7, which is arranged on the top surface of the foundation pit slab 4, and a steel cage 71 is arranged in the foundation slab 7 and poured with concrete. The steel cage 71 includes 4 steel layers 711 and a plurality of supporting steel bars 712; the 4 steel layers 711 are arranged sequentially from bottom to top, and each adjacent 2 steel layers 711 are arranged at intervals, and each steel layer 711 is a mesh structure formed by staggered arrangement of a plurality of transverse steel bars 7111 and a plurality of longitudinal steel bars 7112; each supporting steel bar 712 is connected and fixed to each steel layer 711 by binding. The total thickness H4 of the foundation slab 7 is 1000mm, and the spacing H5 between each adjacent 2 steel layers 711 of the steel cage 71 is 300mm. Correspondingly, the spacing between the top steel layer 711 of the steel cage 71 and the top surface of the foundation slab 7, and the spacing between the bottom steel layer 711 of the steel cage 71 and the bottom surface of the foundation slab 7 are both H6, and H6 is 50mm. The foundation slab 7 is used to support the foundation structure for installing the machine tool equipment. The foundation slab 7 adopts a large-volume concrete design, so that the foundation slab 7 has good integrity and uniformity, and the distribution of bearing capacity is more uniform, which improves the stability of the foundation slab 7. The steel cage 71 of the foundation slab 7 adopts a multi-layer steel layer 711 design. During construction, the concrete is poured multiple times for layered construction, which can effectively solve the problem of concrete cracking caused by temperature differences in large-volume concrete construction, and ensure that the foundation slab 7 can provide a stable support structure for the foundation structure of the machine tool equipment.

[0029] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications, combinations and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of the claims of the utility model.

Claims

1. Composite foundation for machine tool equipment, characterized by: It includes a cushion layer and a plurality of pile bodies; each pile body is a cement-soil mixing pile, the length direction of each pile body is arranged vertically, the top of each pile body is flush, the bottom of each pile body passes through the soft soil layer and is embedded in the bearing layer, and the pile bodies are arranged in a rectangular array in the horizontal direction, and the axial distance between each adjacent two pile bodies is less than the pile diameter of the pile body, so that an overlapping area is formed between each adjacent two pile bodies; the bottom surface of the cushion layer is connected to the top of each pile body; it also includes a foundation bottom plate, which is arranged on the top surface of the cushion layer, and a steel cage is arranged in the foundation bottom plate and concrete is poured, and the steel cage includes a plurality of steel layers and a plurality of supporting steel bars; the plurality of steel layers are arranged in sequence from bottom to top, and each adjacent two steel layers are arranged at intervals, and each steel layer is a mesh structure formed by staggered arrangement of a plurality of transverse steel bars and a plurality of longitudinal steel bars; each supporting steel bar is connected and fixed to each steel layer.

2. The composite foundation for machine tool equipment according to claim 1, characterized in that: The difference between the axial center distance between each two adjacent pile bodies and the pile diameter of the pile body is in the range of 50 mm to 150 mm.

3. The composite foundation for machine tool equipment according to claim 1, characterized in that: The pile diameter of each pile body is in the range of 500 mm to 700 mm.

4. The composite foundation for machine tool equipment according to claim 1, characterized in that: The bottom end of each pile is embedded in the bearing layer to a depth greater than 2m.

5. The composite foundation for machine tool equipment according to claim 1, characterized in that: The cushion layer is made of concrete, and the thickness of the cushion layer is in the range of 100 mm to 200 mm.

6. The composite foundation for machine tool equipment according to claim 1, characterized in that: The total thickness of the foundation slab is in the range of 900 mm to 1000 mm, and the distance between each adjacent two layers of steel bars of the steel cage is in the range of 250 mm to 300 mm.

7. The composite foundation for machine tool equipment according to claim 1, characterized in that: It also includes a foundation pit bottom plate and a foundation pit side wall; the foundation pit bottom plate is made of reinforced concrete, and the foundation pit bottom plate is arranged between the cushion layer and the foundation bottom plate; the foundation pit side wall is made of reinforced concrete, and the bottom end of the foundation pit side wall is connected to the foundation pit bottom plate to form a whole, so that the foundation pit side wall and the foundation pit bottom plate enclose a foundation pit.

8. The composite foundation for machine tool equipment according to claim 7, characterized in that: It also includes a supporting structure, which is arranged along the outer side of the foundation pit side wall.

9. The composite foundation for machine tool equipment according to claim 8, characterized in that: The thickness of the foundation pit bottom plate is within the range of 200 mm to 300 mm, and the thickness of the foundation pit side wall is within the range of 200 mm to 300 mm.

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