CN114250802A

CN114250802A - Fabricated concrete foundation and construction method thereof

Info

Publication number: CN114250802A
Application number: CN202111661196.5A
Authority: CN
Inventors: 梁瑞庆; 叶其革; 梁振升; 陈昌振; 张伯涛; 唐雪梅; 高智炼; 洪川海; 赵轶珏
Original assignee: Guangzhou Electric Power Design Institute Co ltd
Current assignee: Guangzhou Electric Power Design Institute Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-03-29

Abstract

The invention relates to an assembled concrete foundation. The embedded part comprises a prefabricated reinforced concrete foundation and a plurality of L-shaped bolts, the L-shaped bolts are pre-embedded in the prefabricated reinforced concrete foundation, a first cast-in-place layer and a second cast-in-place layer are sequentially arranged between the sleeve and the steel support column along the direction far away from the prefabricated reinforced concrete foundation, the first cast-in-place layer and the prefabricated reinforced concrete foundation are connected into a whole, and the second cast-in-place layer and the first cast-in-place layer are connected into a whole. By arranging the embedded part, the embedded part can be prefabricated in a factory, the pouring and maintaining conditions of the embedded part are not influenced by weather, the finished product quality is higher, and the production efficiency can be improved; when the embedded part is required to be used, the embedded part can be transported to the site, and the steel support column and the L-shaped bolt are connected, so that the construction period can be greatly shortened; through setting up the sleeve, and the sleeve cover is located the junction between steel support post and the L type bolt to increase the joint strength of steel support post and L type bolt.

Description

Fabricated concrete foundation and construction method thereof

Technical Field

The invention relates to the technical field of foundation foundations, in particular to an assembly type concrete foundation and a construction method thereof.

Background

The foundation base refers to a load-bearing member which is in contact with the foundation at the bottom of a building or a structure, has the function of transferring the load at the upper part to the foundation, and is an important component of the building or the structure. At present, except for urban substations in large cities, most substations are arranged in an open outdoor manner, and a large number of foundation foundations are required to be arranged on a distribution device field for supporting electrical equipment on the upper portion of the outdoor open-type substation. However, in the conventional technology, a cast-in-place reinforced concrete foundation is mostly adopted, and the conventional method of the cast-in-place reinforced concrete foundation is that a construction unit processes reinforcing steel bars, forms, pours pouring materials and other construction procedures on site according to design drawings, natural condition curing is performed after pouring of the pouring materials is completed, and after the pouring materials are cured to reach the specified strength, upper supports and equipment can be installed.

However, the construction method of the current cast-in-place reinforced concrete foundation has the following problems:

1) the construction period is long. The cast-in-place reinforced concrete foundation needs to be subjected to multiple construction procedures such as steel bar manufacturing, binding, formwork erecting, pouring material pouring, pouring material curing and the like on site, the procedures are connected in a front-to-back mode, and the required construction period is long.

2) The maintenance period is long. The cast-in-place reinforced concrete foundation needs to be naturally maintained on site after pouring is completed, and about 14-21 days is needed when the pouring material reaches the mounting strength of the upper support and the equipment.

3) And the environment is polluted. The cast-in-place reinforced concrete foundation can cause certain pollution to soil and underground water in field pouring, and noise pollution can be caused during vibration.

4) The cost is high. The cast-in-place reinforced concrete foundation needs to be manufactured on site by multiple technical workers, the utilization efficiency of the template is low, and the labor cost and the material cost are high.

Disclosure of Invention

Based on this, it is necessary to provide an assembled concrete foundation which can be prefabricated in a factory, reduce environmental pollution, prevent the pouring and maintenance conditions of pouring materials from being influenced by weather, improve the quality of finished products, improve the production efficiency and greatly shorten the construction period.

An assembled concrete foundation comprising:

the embedded part is embedded into a foundation and comprises a prefabricated reinforced concrete foundation and a plurality of L-shaped bolts, the L-shaped bolts are embedded in the prefabricated reinforced concrete foundation, and one ends of the L-shaped bolts are exposed out of the upper surface of the prefabricated reinforced concrete foundation;

the steel support columns are connected with the L-shaped bolts;

the sleeve is sleeved at the joint of the steel support column and the L-shaped bolt, a first cast-in-place layer and a second cast-in-place layer are sequentially arranged between the sleeve and the steel support column along the direction far away from the prefabricated reinforced concrete foundation, the first cast-in-place layer and the prefabricated reinforced concrete foundation are connected into a whole, and the second cast-in-place layer and the first cast-in-place layer are connected into a whole.

By arranging the embedded part, the embedded part can be prefabricated in a factory, mass production and manufacturing can be realized, environmental pollution can be reduced, meanwhile, the pouring and maintenance conditions of the embedded part are not influenced by weather, the quality of a finished product is higher, and the production efficiency can be improved; when the embedded part is required to be used, the embedded part can be transported to the site, and the steel support column and the L-shaped bolt are connected, so that the construction period can be greatly shortened; through setting up the sleeve, and the sleeve cover is located the junction between steel support post and the L type bolt to further consolidate steel support post and L type bolt, in order to increase the joint strength of steel support post and L type bolt.

In one embodiment, the L-shaped bolt comprises an upper vertical section extending out of the upper surface of the prefabricated reinforced concrete foundation, a lower vertical section pre-embedded into the prefabricated reinforced concrete foundation and a horizontal section, wherein the horizontal section and the lower vertical section are both bonded and anchored with the prefabricated reinforced concrete foundation, and the upper vertical section extends into the sleeve and is bonded and anchored with the first cast-in-place layer and the second cast-in-place layer.

In one embodiment, the prefabricated reinforced concrete foundation comprises a base part and a connecting part which are connected, wherein the outer diameter of the connecting part is the same as that of the sleeve.

In one embodiment, a plurality of L-shaped bolts are uniformly arranged at equal intervals in the circumferential direction.

In one embodiment, a plurality of hoisting pieces convenient for hoisting are fixedly connected to the prefabricated reinforced concrete foundation.

In one embodiment, the steel support column is connected with the plurality of L-shaped bolts through a flange assembly, mounting holes matched with the L-shaped bolts are formed in the flange assembly, the L-shaped bolts penetrate through the mounting holes, and the flange assembly is fixed relative to the prefabricated reinforced concrete foundation through fasteners.

In one embodiment, a pouring channel for facilitating the pouring of the pouring material is arranged between the sleeve and the flange assembly, and the pouring channel is filled with the pouring material.

In one embodiment, the flange assembly comprises a first flange fixedly connected to the first end of the steel support column and a second flange matched with the first flange, the first flange is connected with the second flange through the L-shaped bolt, and the second flange is connected with the first cast-in-place layer in an adhesion mode.

Another object of the present invention is to provide a method for constructing a fabricated concrete foundation as described above, comprising the steps of:

connecting the steel support column with a plurality of L-shaped bolts;

sleeving the sleeve on the joint of the steel support column and the L-shaped bolt, and keeping the sleeve still;

pouring the casting material between the sleeve and the steel support column to form the first cast-in-place layer, and maintaining the first cast-in-place layer, wherein the first cast-in-place layer and the prefabricated reinforced concrete foundation are connected into a whole;

and injecting the casting material again between the sleeve and the steel support column to form the second cast-in-place layer, and connecting the second cast-in-place layer and the first cast-in-place layer into a whole.

In one embodiment, the construction method of the fabricated concrete foundation further comprises the steps of manufacturing the embedded parts:

embedding a plurality of L-shaped bolts into preset positions in a mold for forming the prefabricated reinforced concrete foundation;

and pouring the casting material into a mold for forming the prefabricated reinforced concrete foundation, and curing the poured casting material.

By arranging the embedded part, the embedded part can be prefabricated in a factory, mass production and manufacturing can be realized, environmental pollution can be reduced, meanwhile, the pouring and maintenance conditions of the embedded part are not influenced by weather, the quality of a finished product is higher, and the production efficiency can be improved; when the embedded part is required to be used, the embedded part can be transported to the site, and the steel support column and the L-shaped bolt are connected, so that the construction period can be greatly shortened; through setting up the sleeve, and the sleeve cover is located the junction between steel support post and the L type bolt to further consolidate steel support post and L type bolt, in order to increase the joint strength of steel support post and L type bolt. The application discloses assembled concrete foundation is applicable to multiple ground, especially natural ground and composite foundation, and is applicable to the transformer substation of newly-built, extension, reconstruction that the time limit for a project required height.

Drawings

Fig. 1 is a schematic structural view illustrating an assembled concrete foundation installed in a foundation pit according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an embedded part according to an embodiment of the present invention;

FIG. 3 is a top view of an embedment structure according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating a process of fabricating an embedded part according to an embodiment of the invention;

fig. 5 is a flow chart illustrating a construction method of the fabricated concrete foundation according to an embodiment of the present invention.

Description of the reference numerals

10. An assembled concrete foundation; 100. prefabricating a reinforced concrete foundation; 110. a base portion; 120. a connecting portion; 130. hoisting holes; 200. an L-shaped bolt; 210. an upper vertical section; 220. a lower vertical section; 230. a horizontal portion; 300. a steel support post; 400. a first cast-in-place layer; 500. a sleeve; 600. pouring materials; 700. a flange assembly; 710. a fastener; 720. a first flange; 730. a second flange; 740. a reinforcing structure; 800. a foundation pit; 810. a cushion layer; 820. a ground surface; 900. and a second cast-in-place layer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention relates to a fabricated concrete foundation 10. The fabricated concrete foundation 10 includes a prefabricated reinforced concrete foundation 100 prefabricated in a factory, a plurality of L-shaped bolts 200, steel bracket columns 300, a first cast-in-place layer 400, a sleeve 500, and a second cast-in-place layer 900. A plurality of L-bolts 200 are pre-embedded in the prefabricated reinforced concrete foundation 100. The steel bracket post 300 is connected with a plurality of L-bolts 200. A first cast-in-place layer 400 and a second cast-in-place layer 900 are formed between the sleeve 500 and the steel support pillar 300. The second cast-in-place layer 900 is connected with a plurality of L-shaped bolts 200, the steel support columns 300, the first cast-in-place layer 400 and the sleeve 500. The first cast-in-place layer 400 is connected with the prefabricated reinforced concrete foundation 100 and the plurality of L-shaped bolts 200.

Referring to fig. 1 and 2, the prefabricated reinforced concrete foundation 100 and the plurality of L-bolts 200 cooperate with each other to form an embedded part capable of being embedded into a foundation, and the embedded part is embedded below the ground 820. A plurality of L-bolts 200 are pre-embedded in the prefabricated reinforced concrete foundation 100. One ends of the plurality of L-bolts 200 are exposed to the upper surface of the prefabricated reinforced concrete foundation 100. The embedded part can be prefabricated in a factory, batch production and manufacturing can be realized, and environmental pollution caused by on-site manufacturing can be reduced.

Referring to fig. 1 and 2, the prefabricated reinforced concrete foundation 100 includes a foundation portion 110 and a connection portion 120 connected to each other. The base portion 110 and the connecting portion 120 are integrally formed. The connecting portion 120 has the same outer diameter as the sleeve 500.

The prefabricated reinforced concrete foundation 100 is formed by splicing a plurality of steel templates and injecting a casting material 600 into a foundation shell having a cavity formed by splicing the plurality of steel templates. After the casting material 600 reaches a certain strength, the plurality of steel templates can be disassembled. A plurality of steel templates can be spliced at will to diversify the prefabricated reinforced concrete foundation 100 finally obtained. For example, a plurality of steel forms are spliced into a square structure with an upper opening, and the finally obtained prefabricated reinforced concrete foundation 100 is a square. And the prefabricated reinforced concrete foundation 100 is maintained indoors, so that the production efficiency can be improved, the repeated utilization rate of the template is improved, and the manufacturing cost is reduced. The casting material 600 is one of cement, mortar, and concrete. In this embodiment, concrete is used as the casting material 600. The foundation portion 110 of the prefabricated reinforced concrete foundation 100 is a cube. The connection portion 120 of the prefabricated reinforced concrete foundation 100 is a cylinder.

Referring to fig. 1 and 2, a plurality of L-shaped bolts 200 extend out of the upper surface of the prefabricated reinforced concrete foundation 100 and are uniformly arranged at equal intervals along the circumferential direction. The L-bolt 200 includes an upper vertical section 210 protruding out of the upper surface of the prefabricated reinforced concrete foundation 100, a lower vertical section 220 pre-embedded in the prefabricated reinforced concrete foundation 100, and a horizontal section 230. A first end of the lower vertical section 220 is connected to a first end of the horizontal portion 230 and a second end of the lower vertical section 220 is connected to a first end of the upper vertical section 210. The horizontal part 230 and the lower vertical section 220 are both bonded and anchored with the prefabricated reinforced concrete foundation 100. The upper vertical section 210 extends into the sleeve 500 to be bonded and anchored with the first cast-in-place layer 400 and the second cast-in-place layer 900. The horizontal portion 230 is perpendicular to the lower vertical section 220.

Before the casting material 600 is injected into the base casing having the cavity formed by splicing the plurality of steel templates, the L-bolt 200 is fixed to the inside of the base casing having the cavity formed by splicing the plurality of steel templates according to the anchoring length. After the L-bolt 200 is fixed in position, the interior of the foundation shell having a cavity formed by splicing a plurality of steel templates is filled with a casting material 600. So that the horizontal portion 230 of the L-bolt 200 and the lower vertical section 220 of the L-bolt 200 are adhesively anchored to the prefabricated reinforced concrete foundation 100. The number, diameter and anchoring length of the L-bolts 200 are determined according to the magnitude of the load. In the present embodiment, the number of L-bolts 200 is 8.

A pre-welded stud is fixedly connected to the lower vertical section 220 of the L-bolt 200. The prewelding stud is vertically welded on the lower vertical section 220, so that the connection strength of the prefabricated reinforced concrete foundation 100 and the lower vertical section 220 can be increased, and the prefabricated reinforced concrete foundation 100 and the lower vertical section 220 are more firmly connected.

Referring to fig. 1 and 2, a steel bracket column 300 is connected with a plurality of L-bolts 200 in an up-and-down butt joint manner through a flange assembly 700. The steel support column 300 is a steel pipe. The steel support post 300 is a hollow structure. The upper vertical section 210 of L-bolt 200 is threaded. The flange assembly 700 is provided with mounting holes for engaging the L-bolts 200. The L-bolts 200 are inserted into the mounting holes and the flange assembly 700 is fixed relative to the prefabricated reinforced concrete foundation 100 by the fasteners 710. The fastener 710 is a nut.

Referring to fig. 1 and 2, a sleeve 500 is sleeved at a connection portion of the steel bracket post 300 and the L-bolt 200. A first cast-in-place layer 400 and a second cast-in-place layer 900 are sequentially arranged between the sleeve 500 and the steel support column 300 along the direction far away from the prefabricated reinforced concrete foundation 100. The first cast-in-place layer 400 is connected with the prefabricated reinforced concrete foundation 100 as a whole, and the second cast-in-place layer 900 is connected with the first cast-in-place layer 400 as a whole.

The first cast-in-place layer 400 and the second cast-in-place layer 900 are formed by injecting a casting material 600 into the sleeve 500. The first cast-in-place layer 400 is used to make the connection of the steel support post 300 and the L-bolt 200 more robust. It is to be understood. The first cast-in-place layer 400 can be bonded to the prefabricated reinforced concrete foundation 100, the sleeve 500, the plurality of L-bolts 200, and the side of the flange assembly 700 adjacent to the first cast-in-place layer 400. The second cast-in-place layer 900 is bonded to the sleeve 500, the steel support post 300, the flange assembly 700, and the first cast-in-place layer 400.

After the steel bracket column 300 and the L-bolt 200 are installed, the first cast-in-place layer 400 and the second cast-in-place layer 900 in the sleeve 500 are used for further reinforcing the joint of the steel bracket column 300 and the L-bolt 200, so as to increase the connection strength of the steel bracket column 300 and the L-bolt 200. The sleeve 500 has a hollow structure. The sleeve 500 is prefabricated at the factory. The sleeve 500 is disposed above the ground 820.

It is to be understood that, as shown in fig. 1, the flange assembly 700 is disposed within the sleeve 500, and the inner diameter of the flange assembly 700 is greater than the outer diameter of the steel bracket post 300. A pouring channel for facilitating the pouring of the pouring material 600 is provided between the sleeve 500 and the flange assembly 700. The casting channel is communicated with the outside and the inside, and the casting material 600 can be injected into the sleeve 500 through the casting channel to form a first cast-in-situ layer 400 and a second cast-in-situ layer 900 respectively.

Referring to fig. 1, the flange assembly 700 includes a first flange 720 fixedly connected to a first end of the steel bracket post 300 and a first flange 720 coupled to the first flange 720, and the first flange 720 is connected to a second flange 730 by a plurality of L-bolts 200.

In this embodiment, the first flange 720 is welded to the first end of the steel support pillar 300, and one side of the second flange 730 is adhesively connected to the first cast-in-place layer 400. And a plurality of triangular reinforcing structures 740, shown in figure 1, are attached around the first flange 720. A first side of the reinforcing structure 740 is welded to the first flange 720, a second side of the reinforcing structure 740 is welded to the steel support post 300, and the first side of the reinforcing structure 740 is perpendicular to the second side of the reinforcing structure 740. The reinforcing structure 740 serves to reinforce the strength between the steel support post 300 and the first flange 720. The first side of the reinforcing structure 740 is perpendicular to the second side of the reinforcing structure 740. The reinforcing structure 740 is made of steel bars.

Referring to fig. 3, a plurality of hoisting pieces for facilitating hoisting are fixedly connected to the prefabricated reinforced concrete foundation 100. In this embodiment, the sling is a hook. The prefabricated reinforced concrete foundation 100 is provided with a plurality of lifting holes 130 as shown in fig. 3. The hook is screwed into the hanging hole 130. The four hoisting holes 130 are uniformly distributed on the prefabricated reinforced concrete foundation 100. In other embodiments, the hoisting member may be pre-embedded inside the prefabricated reinforced concrete foundation 100.

The fabricated concrete foundation 10 of the present embodiment relates to a construction method during use. The method comprises the following steps:

the embedded parts are embedded into the foundation, and one ends of the L-shaped bolts 200, which are exposed out of the prefabricated reinforced concrete foundation 100, are exposed above the foundation. The foundation bed part is poured with a cushion layer 810, and after the cushion layer 810 meets the strength requirement, the upper surface of the cushion layer 810 is brushed with an adhesive. And hoisting the embedded part, and placing the embedded part in the foundation to bond the bottom of the prefabricated reinforced concrete foundation 100 with the cushion layer 810. And after the plane position, the elevation and the installation error of the embedded part are checked to meet the requirements of a drawing and a specification, backfilling and tamping the foundation according to the requirement of a designed compaction coefficient.

The method comprises the following steps of:

a plurality of L-bolts 200 are embedded in predetermined positions in a mold for forming the prefabricated reinforced concrete foundation 100, the mold being a foundation shell having a cavity formed by splicing a plurality of steel templates. It should be understood that, when L-bolt 200 is embedded, lower vertical section 220 and horizontal section 230 of L-bolt 200 are embedded inside prefabricated reinforced concrete foundation 100, and upper vertical section 210 of L-bolt 200 extends out of upper surface of prefabricated reinforced concrete foundation 100 and into sleeve 500. A plurality of L-bolts 200 are exposed from one end of the prefabricated reinforced concrete foundation 100 as upper vertical sections 210 of the L-bolts 200.

Pouring the casting material 600 into a mold for forming the prefabricated reinforced concrete foundation 100, and curing the poured casting material 600.

The steel bracket post 300 is coupled with a plurality of L-bolts 200. Wherein, upper vertical section 210 of L-bolt 200 is threaded. The flange assembly 700 is provided with mounting holes matched with the L-shaped bolts 200, the L-shaped bolts 200 are arranged in the mounting holes in a penetrating manner, and the flange assembly 700 is fixed relative to the prefabricated reinforced concrete foundation 100 through fasteners 710.

The sleeve 500 is sleeved at the joint of the steel support column 300 and the L-bolt 200, and the sleeve 500 is kept still. Wherein, a pouring channel for pouring the pouring material 600 into the sleeve 500 is provided between the sleeve 500 and the flange assembly 700. In order to hold the sleeve 500 in place, a fixing means known in the art may be used, for example, a fixing bracket for fixing the sleeve 500 may be provided, and the fixing bracket may be removed after the casting material 600 in the sleeve 500 is molded.

And pouring a casting material 600 between the sleeve 500 and the steel support column 300 to form a first cast-in-place layer 400, and maintaining the first cast-in-place layer 400, wherein the first cast-in-place layer 400 and the precast reinforced concrete foundation 100 are connected into a whole. Wherein the casting material 600 can be injected between the sleeve 500 and the steel bracket post 300 through the casting channel.

A second cast-in-place layer 900 is formed by injecting a casting material 600 again between the sleeve 500 and the steel support pillar 300 and is integrated with the first cast-in-place layer 400. Before the casting material 600 is injected between the sleeve 500 and the steel support column 300, the first cast-in-place layer 400 needs to be cured to meet the strength requirement. A casting material 600 is then injected through the casting channel between the sleeve 500 and the steel support post 300 so that the second cast-in-place layer 900 can be bonded to the first cast-in-place layer 400.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An assembled concrete foundation, comprising:

the steel support columns are connected with the L-shaped bolts;

2. The fabricated concrete foundation of claim 1, wherein the L-shaped bolt comprises an upper vertical section extending out of the upper surface of the prefabricated reinforced concrete foundation, a lower vertical section pre-embedded in the prefabricated reinforced concrete foundation and a horizontal section, the horizontal section and the lower vertical section are both adhesively anchored to the prefabricated reinforced concrete foundation, and the upper vertical section extends into the sleeve and is adhesively anchored to the first cast-in-place layer and the second cast-in-place layer.

3. The fabricated concrete foundation of claim 1, wherein the prefabricated reinforced concrete foundation comprises a connected foundation portion, a connecting portion, the connecting portion having an outer diameter the same as an outer diameter of the sleeve.

4. The fabricated concrete foundation of claim 1, wherein a plurality of the L-shaped bolts are uniformly arranged at equal intervals in the circumferential direction.

5. The fabricated concrete foundation of claim 1, wherein a plurality of hoisting pieces convenient for hoisting are fixedly connected to the prefabricated reinforced concrete foundation.

6. The fabricated concrete foundation of claim 1, wherein the steel support columns are connected with the L-shaped bolts through flange components, mounting holes matched with the L-shaped bolts are formed in the flange components, the L-shaped bolts penetrate through the mounting holes, and the flange components are fixed relative to the prefabricated reinforced concrete foundation through fasteners.

7. The fabricated concrete foundation of claim 7, wherein a pouring channel for facilitating the pouring of the pouring material is provided between the sleeve and the flange assembly, the pouring channel being filled with the pouring material.

8. The fabricated concrete foundation of claim 7, wherein the flange assembly comprises a first flange fixedly connected to the first end of the steel support column and a second flange matched with the first flange, the first flange is connected with the second flange through the L-shaped bolts, and the second flange is adhesively connected with the first cast-in-place layer.

9. A method of constructing a fabricated concrete foundation according to any one of claims 1-8, comprising the steps of:

embedding the embedded part into a foundation, wherein one end of the prefabricated reinforced concrete foundation, which is exposed out of the plurality of L-shaped bolts, is exposed above the foundation;

connecting the steel support column with a plurality of L-shaped bolts;

10. The method of constructing an assembled concrete foundation according to claim 9, further comprising the step of fabricating the embedment: