Prefabricated column foundation

Abstract

The present invention relates to an assembled column foundation, comprising a box body formed by splicing weathering steel plates, wherein the box body is provided with vertical tie bars, the box body is provided with crisscrossed horizontal reinforcement bars, the box body is provided with a lower anchor plate, a connecting sleeve and anchor bars, the connecting sleeve is welded to the lower end of the lower anchor plate, the anchor bars are threadedly connected to the connecting sleeve, the lower anchor plate is provided with bolt connection holes for connecting columns, the box body is provided with a penetrating PVC pipe or steel pipe, and concrete is poured in the box body. The present invention can be mass-produced in a factory according to standard parts, the weathering steel is corrosion-resistant during use, no anti-corrosion measures such as painting are required, the durability is good, and the advantages include large bearing capacity, simple and fast production, installation and construction, energy saving and environmental protection, material saving, accelerated construction progress, shortened construction period, convenient turnover and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation, and more particularly to an assembled column foundation. Background Art

[0002] The construction of municipal bridge structures involves a large number of columns, and most of the columns use extended foundations. Conventional extended foundations are mostly made of concrete cast by on-site formwork, and many stress-bearing steel bars are configured in the concrete. If used in locations with large loads or poor geology, the overall size needs to be large. Conventional extended foundations have many on-site construction processes, are easily affected by the environment, and are difficult to guarantee quality. They take a long time to make, and after they are made, they are fixed in form, have poor versatility, are difficult to transport, and have a low degree of assembly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an assembled column foundation with large bearing capacity and simple and quick construction.

[0004] The technical solution adopted by the present invention to solve its technical problems is: constructing an assembled column foundation, including a box body spliced ​​by weather-resistant steel plates, vertical tension bars are arranged inside the box body, criss-crossing horizontal reinforcement bars are arranged inside the box body, a lower anchor plate, a connecting sleeve and anchor bars are arranged inside the box body, the connecting sleeve is welded to the lower end of the lower anchor plate, the anchor bar is threadedly connected to the connecting sleeve, the lower anchor plate is provided with bolt connection holes for connecting columns, a PVC pipe or steel pipe is penetrated inside the box body, and concrete is poured inside the box body.

[0005] In the above solution, threaded steel is inserted into the PVC pipe or steel pipe.

[0006] In the above solution, the lower anchor plate is connected to the upper anchor plate by bolts, the upper anchor plate is fixed to the lower end of the column, and the column and the upper anchor plate are also connected by a stiffening plate.

[0007] In the above solution, a box body formed by splicing weather-resistant steel plates is provided on the top of the tie rod.

[0008] The fabricated column foundation of the present invention has the following beneficial effects:

[0009] The assembled column foundation of the present invention uses weathering steel box-shaped parts on the outside as both templates and stress-bearing steel bars, and forms a similar steel tube concrete structure with the post-cast concrete. It can be mass-produced in factories according to standard parts. The weathering steel is corrosion-resistant during use, and no anti-corrosion measures such as painting are required. It has good durability, large bearing capacity, simple and fast production, installation, and construction, energy saving and environmental protection, material saving, accelerated construction progress, shortened construction period, and convenient turnover. The foundation can be used for other purposes such as loading test or road collision prevention after or before use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0011] Figure 1 It is a front view of the assembled column foundation of the present invention;

[0012] Figure 2 It is a top view of the assembled column foundation of the present invention;

[0013] Figure 3 It is a schematic diagram of the connection between the assembled column base and the column of the present invention;

[0014] Figure 4 It is a schematic diagram of the strip splicing of the foundation under the assembled column of the present invention;

[0015] Figure 5 It is a schematic diagram of the square splicing of the assembled column foundation of the present invention;

[0016] Figure 6 It is a schematic diagram of the assembled column foundation of the present invention used for the anti-collision pier;

[0017] Figure 7 It is a schematic diagram of the assembled column foundation of the present invention being used for potted planting. DETAILED DESCRIPTION

[0018] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0019] like Figure 1-6 As shown, the assembled column foundation of the present invention comprises a box body 1 formed by splicing weathering steel plates, a vertical tie bar 2 is arranged inside the box body 1, and a box body 3 formed by splicing weathering steel plates is arranged on the top of the tie bar 2. The box body 1 is provided with crisscrossing horizontal reinforcement ribs 4, the box body 1 is provided with a lower anchor plate 5, a connecting sleeve 7 and an anchor bar 6, the connecting sleeve 7 is welded to the lower end of the lower anchor plate 5, the anchor bar 6 is threadedly connected to the connecting sleeve 7, the lower anchor plate 5 is provided with a bolt connection hole for connecting the column 11, the box body 1 is provided with a penetrating PVC pipe or steel pipe 8, and concrete 9 is poured in the box body 1.

[0020] The box body 1 and the box body 3 both serve as templates for pouring concrete 9. The top of the tie bar 2 is a pull ring, which is exposed to the outside after pouring concrete, making it easy to carry. The threaded steel bar 13 is inserted into the PVC pipe or steel pipe 8, and multiple assembled column foundations can be spliced ​​through the threaded steel bar 13, which is convenient for assembly.

[0021] The lower anchor plate 5 is connected to the upper anchor plate 10 by bolts, and the upper anchor plate 10 is fixed to the lower end of the column 11. The column 11 and the upper anchor plate 10 are also connected by a stiffening plate 12 to improve strength.

[0022] The manufacturing method of the assembled column foundation of the present invention is as follows:

[0023] 1. According to actual needs, the weathering steel plates are welded into a box body 1 of uniform size, and holes are reserved at specific positions for installing PVC pipes or steel pipes 8, and for facilitating the later installation of fine-rolled threaded steel bars 13;

[0024] 2. Use weather-resistant steel plates to weld into the box body 3, and install the tie rod 2 through holes in the middle. The tie rod 2 will be welded to the weather-resistant steel in the box body 1 later;

[0025] 3. Connect the anchor bar 6, the connecting sleeve 7 and the lower anchor plate 5 together; the anchor bar 6 is made of ordinary steel bars with threads on the top, and the anchor bar 6 and the connecting sleeve 7 are tightened and connected together; the lower anchor plate 5 is cut from ordinary steel plates, and the lower anchor plate 5 and the connecting sleeve 7 are welded;

[0026] 4. Use multiple ordinary steel bars to bind or weld into horizontal reinforcement ribs 4, which are later welded with the weathering steel plates of the adjacent box 1. The horizontal reinforcement ribs 4 are used to position the anchor ribs 6 and the tension ribs 2, and enhance the stress characteristics of the post-cast concrete;

[0027] 5. A hole is reserved in the post-cast concrete through the PVC pipe / steel pipe 8 to locate and protect the fine-rolled threaded steel bar 13, and facilitate the perforation installation of the fine-rolled threaded steel bar 13;

[0028] 6. Concrete is poured uniformly in the factory and maintained to form the foundation;

[0029] 7. Weld the column 11 to be installed with the stiffening plate 12 and the upper anchor plate 10. The stiffening plate 12 and the upper anchor plate 10 are cut from ordinary steel plates. The upper anchor plate 10 has the same specifications as the lower anchor plate 5.

[0030] 8. Use bolts to connect the prepared foundation through the reserved bolt holes. When dismantling later, just loosen the bolts to separate them.

[0031] 9. If the application is in a location with a large load or poor geology and the foundation size needs to be increased, the finely rolled threaded steel bar 13 is installed through the hole formed by the reserved PVC pipe or steel pipe 8, and tensioned and anchored as required to form a strip foundation or other size expansion foundation;

[0032] 10. Before or after the use of the foundation, it can be laid out in sequence where the road is needed, or piled up in order for use in loading tests or other purposes such as road collision prevention.

[0033] like Figure 7As shown, the present invention can also be used as a container for potted plants, as follows:

[0034] 1. Refer to the previous construction method to make the box body 1, the box body 3 and the tie rod 2, and then weld them together. The reserved holes are used as drainage holes for potted plants in the later stage;

[0035] 2. Lay geotextile near the reserved hole, then fill the soil and plant green plants to form potted plants, which can be used for greening municipalities, highways, gardens, etc.;

[0036] 3. After the filling is completed but before the green plants are planted, they can be laid out in order where the road is needed, or piled together in order for use in loading tests or other purposes such as road collision prevention.

[0037] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A method for manufacturing an assembled column foundation, characterized in that: The assembled column foundation comprises a box body formed by splicing weathering steel plates, the box body is provided with vertical tie bars, the box body is provided with crisscrossed horizontal reinforcement bars, the box body is provided with a lower anchor plate, a connecting sleeve and anchor bars, the connecting sleeve is welded to the lower end of the lower anchor plate, the anchor bars are threadedly connected to the connecting sleeve, the lower anchor plate is provided with bolt connection holes for connecting columns, the box body is provided with a penetrating PVC pipe or steel pipe, and concrete is poured in the box body; Insert the precision-rolled threaded steel bar into the PVC pipe or steel pipe; The lower anchor plate is connected to the upper anchor plate by bolts, the upper anchor plate is fixed to the lower end of the column, and the column and the upper anchor plate are also connected by a stiffening plate; A box body formed by splicing weather-resistant steel plates is provided on the top of the tie rod; The method for manufacturing the assembled column foundation comprises the following steps: S1. According to actual needs, the weathering steel plates are welded into boxes of uniform size, and holes are reserved at specific locations for installing PVC pipes or steel pipes, and for facilitating the later installation of fine-rolled threaded steel bars; S2. Weathering steel plates are welded into the box body, and the middle is perforated to install the tie rods, which are later welded to the weathering steel plates in the box body; S3, connecting the anchor bar, the connecting sleeve and the lower anchor plate together; wherein the anchor bar is made of ordinary steel bars with threads on the top, and the anchor bar and the connecting sleeve are tightened and connected together; the lower anchor plate is cut from ordinary steel plates, and the lower anchor plate and the connecting sleeve are welded; S4. Use multiple ordinary steel bars to tie or weld into horizontal reinforcement bars, which are later welded with the weather-resistant steel plates of the adjacent boxes. The horizontal reinforcement bars serve to position anchor bars and tension bars, and enhance the stress characteristics of the post-cast concrete. S5. Preserving channels in the post-cast concrete through PVC pipes or steel pipes can locate and protect the fine-rolled threaded steel bars, and facilitate the perforation and installation of the fine-rolled threaded steel bars; S6. Concrete is poured uniformly in the factory and maintained to form the foundation; S7. Weld the columns to be installed together with the stiffening plates and upper anchor plates. The stiffening plates and upper anchor plates are cut from ordinary steel plates. The upper anchor plates have the same specifications as the lower anchor plates. S8. Use bolts to connect the prepared foundation through the reserved bolt holes. When dismantling later, just loosen the bolts to separate them. S9. If the application is in a location with heavy load or poor geology and the foundation size needs to be increased, install the finely rolled threaded steel bars through the reserved holes formed by the PVC pipe or steel pipe, and tension and anchor them as required to form a strip foundation; S10. Before or after the foundation is used, it is laid out in sequence at the required location on the road, or piled up in sequence for use in loading tests or road collision prevention.

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