A high prefabricated structure column for a factory building

Abstract

This utility model relates to a tall precast structural column for factory buildings, comprising a precast column body, a cast-in-place foundation, and threaded connection components. The top of the precast column body has a first lifting point, and the center of the bottom of the precast column body has a core column extending downwards. Multiple first vertical reinforcing bars are arranged around the perimeter of the core column at the bottom of the precast column body. The cast-in-place foundation is buried underground, and multiple second vertical reinforcing bars are pre-embedded around the perimeter of the top of the cast-in-place foundation. The precast column body is placed on the cast-in-place foundation, such that the bottom surface of the core column abuts against the upper surface of the cast-in-place foundation. The first vertical reinforcing bars are connected to the second vertical reinforcing bars one-to-one through the threaded connection components. Concrete is poured into the space enclosed by the bottom wall of the precast column body, the side wall of the core column, and the upper surface of the cast-in-place foundation to fix the precast column body and the cast-in-place foundation together. This tall precast structural column for factory buildings has high construction efficiency, low construction cost, and minimal impact on the surrounding environment of the construction site.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated assembly plant structure technology, and in particular to a tall prefabricated structural column for plant buildings. Background Technology

[0002] Traditional prefabricated construction of factory buildings mainly uses precast beams to improve construction speed. However, it has been found that the construction period for cast-in-place tall structural columns is long and the process is complex. There are often situations where "beams wait for columns". In addition, on-site concrete pouring has a significant impact on the surrounding environment and low construction efficiency.

[0003] Chinese patent document CN220978802U discloses a concrete construction formwork for structural columns in the installation bay of a hydropower station. It includes several standardized steel formworks. The bottom edge of the lowest standardized steel formwork is connected to one side of a square timber, and pre-embedded reinforcing bars are fixedly installed on the other side of the timber. The inner walls of each standardized steel formwork are equipped with stabilizing components, and scaffolding is installed on the outer sides of the formworks. Two sets of tie rods are inserted into two sets of bolt holes on the inner wall of the standardized steel formwork, and their ends are threaded to the inner walls of two sets of triangular fasteners. The fasteners engage with two vertical retaining walls through slots, and two connecting rods are inserted into the two slots. Two horizontal retaining walls are then fixed in place with two connecting bolts, thus stabilizing the installation of the standardized steel formwork and ensuring stable pouring. After determining the height of the structural columns for the hydropower station installation bay, columns of different heights can be poured on-site using the structural column concrete construction formwork.

[0004] The cast-in-place structural columns constructed using this concrete formwork have the following drawbacks: numerous procedures, long construction period, significant impact on the surrounding environment, seasonality, and difficulty in guaranteeing construction quality. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a tall precast structural column for factory buildings, which aims to improve construction efficiency, reduce construction costs, and ensure construction quality by using precast column bodies and cast-in-place foundations, thereby solving the problems of low on-site construction efficiency and significant environmental impact of tall cast-in-place columns for factory buildings in the prior art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model embodiment provides a tall precast structural column for factory buildings, including a precast column body, a cast-in-place foundation, and a threaded connection assembly;

[0010] The top of the precast column is provided with a first lifting point for external equipment to vertically lift the precast column. The center of the bottom of the precast column is provided with a core column extending downward. Multiple first vertical steel bars are provided around the bottom edge of the precast column.

[0011] The cast-in-place foundation is buried underground. Multiple second vertical steel bars are pre-embedded around the top of the cast-in-place foundation. The precast column is set on the cast-in-place foundation so that the bottom surface of the core column abuts against the upper surface of the cast-in-place foundation. The first vertical steel bar is connected to the second vertical steel bar one by one through threaded connection components. Concrete is poured into the space enclosed by the bottom wall of the precast column, the side wall of the core column, and the upper surface of the cast-in-place foundation to fix the precast column and the cast-in-place foundation together.

[0012] Optionally, the threaded connection assembly includes a first threaded sleeve, a second threaded sleeve, and a connecting sleeve;

[0013] The lower end of the first vertical reinforcing bar and the upper end of the second vertical reinforcing bar are respectively provided with external threads. The inner walls of the first threaded sleeve, the second threaded sleeve and the connecting sleeve are respectively provided with internal threads. The outer surfaces of the first threaded sleeve and the second threaded sleeve are respectively provided with external threads. The internal thread of the first threaded sleeve engages with the external thread at the lower end of the first vertical reinforcing bar. The internal thread of the second threaded sleeve engages with the external thread at the upper end of the second vertical reinforcing bar. The internal thread on the upper side of the connecting sleeve engages with the external thread of the first threaded sleeve. The internal thread on the lower side of the connecting sleeve engages with the external thread of the second threaded sleeve.

[0014] Optionally, the threaded connection assembly also includes a lock nut;

[0015] The upper end of the inner hole of the connecting sleeve is a tapered hole, and the diameter of the opening of the tapered hole is larger than the diameter of the bottom of the tapered hole. The upper part of the outer side of the first threaded sleeve is provided with a step that protrudes outward in a radial direction. The step abuts against the inner wall surface of the tapered hole at the upper end of the connecting sleeve. The internal thread of the locking nut engages with the external thread of the second threaded sleeve, and the locking nut abuts against the lower end face of the connecting sleeve.

[0016] Optionally, a casting pipe is pre-embedded at the bottom of the precast column, with one end of the casting pipe set on the side wall of the precast column and the other end set on the bottom wall of the precast column.

[0017] Optionally, it also includes a diagonal brace fixing assembly, which includes a diagonal brace rod, a first hinge seat, and a second hinge seat;

[0018] The precast column is rectangular in shape. A first hinge seat is fixedly installed in the middle of each side wall of the precast column. A second hinge seat corresponding to the first hinge seat is fixedly installed on the ground around the precast column. One end of the diagonal brace is hinged to the first hinge seat and the other end is hinged to the second hinge seat.

[0019] Optionally, a threaded steel sleeve is pre-embedded on the side wall of the precast column corresponding to the installation area of ​​the first hinge seat, and the first hinge seat and the threaded steel sleeve are connected by fixing bolts.

[0020] Optionally, second lifting points are provided at intervals along the length of the precast column on the side wall of the precast column to allow external equipment to lift the precast column horizontally.

[0021] Optionally, the first and second lifting points are lifting rings. The lifting ring has a U-shaped rod-shaped body, with both ends of the body bent outward to form hooks. The hooks of the lifting ring are embedded inside the precast column.

[0022] Optionally, a column cap is provided at the top of the precast column, and a corbel is provided in the upper middle part of the precast column.

[0023] (III) Beneficial Effects

[0024] The beneficial effects of this utility model are as follows: The tall precast structural column of this utility model includes a precast column body, a cast-in-place foundation, and a threaded connection assembly; the top of the precast column body is provided with a first lifting point for external equipment to vertically lift the precast column body; a core column extending downward is provided at the center of the bottom of the precast column body; multiple first vertical steel bars are provided around the bottom perimeter of the precast column body; the cast-in-place foundation is buried below the ground; multiple second vertical steel bars are pre-embedded around the top perimeter of the cast-in-place foundation; the precast column body is placed on the cast-in-place foundation, so that the bottom surface of the core column abuts against the upper surface of the cast-in-place foundation; the first vertical steel bars are connected to the second vertical steel bars one-to-one through the threaded connection assembly; and concrete is poured into the space enclosed by the bottom wall of the precast column body, the side wall of the core column, and the upper surface of the cast-in-place foundation to fix the precast column body and the cast-in-place foundation together. Compared to existing cast-in-place columns, the tall precast structural columns of this utility model for factory buildings consist of precast column bodies and cast-in-place foundations. As a result, the precast column bodies can be prefabricated in the factory and then transported to the construction site to be connected with the cast-in-place foundations. This can greatly shorten the construction cycle, improve construction efficiency, and reduce construction costs, namely, reducing the cost of operating scaffolds and on-site labor costs. At the same time, it can effectively reduce the adverse impact on the surrounding environment, namely, reducing on-site dust and noise. Attached Figure Description

[0025] Figure 1 This is an exploded view of Embodiment 1 of the tall prefabricated structural columns for factory buildings according to this utility model;

[0026] Figure 2 This is a front view schematic diagram of the assembly process of Embodiment 1 of the tall prefabricated structural columns for factory buildings according to this utility model;

[0027] Figure 3 for Figure 2An enlarged schematic diagram of the tall prefabricated structural columns of the factory building at point A;

[0028] Figure 4 for Figure 1 A schematic diagram of the internal structure of the precast column at the base of the column.

[0029] Figure 5 This is a front view schematic diagram of the precast column body of Embodiment 1 of the tall precast structural column of the present invention for factory buildings;

[0030] Figure 6 This is a top view of the precast column body of Embodiment 1 of the tall precast structural column of the present invention for factory buildings;

[0031] Figure 7 for Figure 6 A front view diagram of the first lifting point in the structure;

[0032] Figure 8 This is a schematic diagram of the internal structure of the precast column body in Embodiment 1 of the present invention, which is a tall precast structural column for factory buildings.

[0033] Figure 9 This is a schematic diagram of the flipping of the precast column body in Embodiment 1 of the present invention, which is a tall precast structural column for factory buildings.

[0034] Figure 10 This is a cross-sectional schematic diagram of the first vertical reinforcing bar, the second vertical reinforcing bar, and the threaded connection assembly of this utility model;

[0035] Figure 11 This is a front view schematic diagram of the precast column body of Embodiment 2 of the tall precast structural column of the present invention.

[0036] [Explanation of Labels in the Attached Image]

[0037] 1: Precast column body; 2: Cast-in-place foundation; 3: Core column; 4: Second vertical reinforcement; 5: First vertical reinforcement; 6: Threaded connection assembly; 7: Casting pipe; 8: Diagonal brace; 9: First hinge seat; 10: Second hinge seat; 11: Threaded steel sleeve; 13: First lifting point; 14: Second lifting point; 15: Main body; 16: Hook; 17: Column cap; 18: Corbel; 19: Column body reinforcement cage; 20: Column base reinforcement cage; 21: Tilting bracket; 22: Tire; 23: First threaded sleeve; 24: Second threaded sleeve; 25: Connecting sleeve; 26: Locking nut. Detailed Implementation

[0038] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper" and "lower" are used interchangeably with... Figure 1The orientation is used as a reference. It should be noted that "tall" in the context of the tall prefabricated structural columns of the factory building described in this embodiment refers to the height of the structural columns being greater than 9 meters.

[0039] Example 1:

[0040] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 , Figure 1 An exploded view of the tall prefabricated structural columns of the factory building in this embodiment is shown. Figure 2 This diagram shows a front view of the tall prefabricated structural columns of the factory building during the assembly process, as shown in this embodiment. Figure 3 It shows Figure 2 An enlarged schematic diagram of the tall prefabricated structural columns of the factory building at the threaded connection assembly. Figure 5 The diagram shows a front view of the precast column body of the tall precast structural column of the factory building in this embodiment. Figure 6 It shows Figure 5 A top view of the precast column.

[0041] This embodiment provides a tall precast structural column for a factory building, including a precast column body 1, a cast-in-place foundation 2, and a threaded connection assembly 6. The top of the precast column body 1 is provided with a first lifting point 13 for vertical hoisting of the precast column body 1 by external equipment. A core column 3 extending downwards is provided at the center of the bottom of the precast column body 1, and multiple first vertical reinforcing bars 5 are provided around the perimeter of the bottom of the precast column body 1. The multiple first vertical reinforcing bars 5 are arranged around the core column 3.

[0042] The cast-in-place foundation 2 is buried underground. Multiple second vertical steel bars 4 are pre-embedded around the top of the cast-in-place foundation 2. The precast column 1 is set on the cast-in-place foundation 2, so that the bottom surface of the core column 3 abuts against the upper surface of the cast-in-place foundation 2. The first vertical steel bar 5 is connected to the second vertical steel bar 4 one-to-one through the threaded connection assembly 6. Concrete is poured into the space enclosed by the bottom wall of the precast column 1, the side wall of the core column 3 and the upper surface of the cast-in-place foundation 2, so that the precast column 1 and the cast-in-place foundation 2 are fixedly connected together.

[0043] The tall precast structural columns of this embodiment include precast column bodies 1 and cast-in-place foundations 2. Using precast column bodies 1 and cast-in-place foundations 2 has the following advantages: First, it improves construction efficiency: the fabrication and transportation of precast columns can be completed off-site, reducing on-site construction time and procedures. Second, it reduces construction costs: the fabrication and transportation of precast column bodies 1 can be carried out using mechanized production and specialized operations, reducing the overall construction cost of the structural columns. Third, industrialized production ensures the construction quality of precast column bodies 1: precast column bodies 1 are produced in a factory, allowing for control over material ratios, quality standards, and other parameters, ensuring the stability of construction quality. The construction error of cast-in-place structural columns is often measured in centimeters, while the error of precast column bodies 1 is measured in millimeters. Precast column bodies 1 are produced on factory mold tables and in sophisticated molds, making quality control easier than on-site. The high precision of precast column bodies 1 will lead to improved precision in the on-site cast-in-place concrete portion. Fourth, reduced environmental impact: The production and transportation of precast column body 1 will not have a significant impact on the construction site and surrounding environment, which is beneficial to environmental protection. Moreover, the production process of precast columns can be mechanized, automated, and standardized, which helps to reduce material waste and energy consumption. Fifth, overcoming seasonal influences: The production of precast column body 1 is not limited by seasons and can be carried out in the factory all year round, facilitating year-round construction.

[0044] Preferably, in this embodiment, the precast column 1 is rectangular and the cast-in-place foundation 2 is inverted T-shaped. Of course, the precast column 1 and the cast-in-place foundation 2 can also be other structural forms.

[0045] In addition, in this embodiment, the height of the precast column 1 can be 9.1-9.8 meters.

[0046] Please see Figure 10 , Figure 10 A cross-sectional schematic diagram of the threaded connection assembly 6 is shown. The threaded connection assembly 6 of this embodiment includes a first threaded sleeve 23, a second threaded sleeve 24, and a connecting sleeve 25. The lower end of the first vertical reinforcing bar 5 and the upper end of the second vertical reinforcing bar 4 are respectively provided with external threads. The inner walls of the first threaded sleeve 23, the second threaded sleeve 24, and the connecting sleeve 25 are respectively provided with internal threads. The outer surfaces of the first threaded sleeve 23 and the second threaded sleeve 24 are respectively provided with external threads. The internal thread of the first threaded sleeve 23 engages with the external thread at the lower end of the first vertical reinforcing bar 5; the internal thread of the second threaded sleeve 24 engages with the external thread at the upper end of the second vertical reinforcing bar 4; the internal thread on the upper side of the connecting sleeve 25 engages with the external thread of the first threaded sleeve 23; and the internal thread on the lower side of the connecting sleeve 25 engages with the external thread of the second threaded sleeve 24.

[0047] Preferably, the upper end of the inner hole of the connecting sleeve 25 is a tapered hole, and the diameter of the opening of the tapered hole is larger than the diameter of the bottom of the tapered hole. The purpose of setting the tapered hole is to guide the first threaded sleeve 23, thereby eliminating the radial deviation between the first vertical steel bar 5 and the second vertical steel bar 4, and realizing the threaded connection between the connecting sleeve 25 and the first threaded sleeve 23.

[0048] Furthermore, the threaded connection assembly 6 also includes a locking nut 26. The upper part of the outer surface of the first threaded sleeve 23 has a radially outwardly protruding step, which abuts against the inner wall of the tapered hole at the upper end of the connecting sleeve 25. The internal thread of the locking nut 26 engages with the external thread of the second threaded sleeve 24, and the locking nut 26 abuts against the lower end face of the connecting sleeve 25. It should be noted that, due to the above structure, the threaded connection assembly 6 can correct the verticality of the precast column 1 by adjusting the distance between the first threaded sleeve 23 and the second threaded sleeve 24. After correction, the connecting sleeve 25 and the locking nut 26 are screwed in to complete the connection.

[0049] Please see Figure 8 , Figure 8 A schematic diagram of the internal structure of the precast column body in this embodiment is shown. The precast column body 1 in this embodiment consists of a column body reinforcement cage 19, a column base reinforcement cage 20, embedded parts, and concrete. First, the column body formwork is installed on the construction platform in the factory. Then, the column body reinforcement cage 19, the column base reinforcement cage 20, and the embedded parts are set inside the column body formwork. Next, concrete is poured into the column body formwork. After the concrete solidifies, the column body formwork is removed, forming the precast column body 1. It should be noted that the column body reinforcement cage 19 consists of a first vertical reinforcement bar 5 and transverse binding reinforcement bars. The upper and lower ends of the first vertical reinforcement bar 5 extend out of the precast column body 1. The lower end of the first vertical reinforcement bar 5 connects to a second vertical reinforcement bar 4, and the upper end of the first vertical reinforcement bar 5 can connect to the reinforcement cage of the beam of the factory structure. The column base reinforcement cage 20 corresponds to the position of the core column 3. After the column base reinforcement cage 20 is filled with concrete, the core column 3 is formed. The embedded parts include a pouring pipe 7, a threaded steel sleeve 11, and a reserved nut.

[0050] Please see Figure 4 , Figure 4 A schematic diagram of the internal structure of the precast column at the bottom is shown. In this embodiment, a casting pipe 7 is pre-embedded at the bottom of the precast column 1. One end of the casting pipe 7 is set on the side wall of the precast column 1, and the other end of the casting pipe 7 is set on the bottom wall of the precast column 1.

[0051] It should be noted that the pouring pipe 7 extends from the side wall of the precast column 1 inward and downward directions to the bottom wall of the precast column 1. When the precast column 1 is placed on the cast-in-place foundation 2, the bottom surface of the core column 3 abuts against the upper surface of the cast-in-place foundation 2. After the first vertical steel bar 5 is connected to the second vertical steel bar 4 one-to-one through the threaded connection assembly 6, a template is first set around the connection between the precast column 1 and the cast-in-place foundation 2. The template, the bottom wall of the precast column 1, the side wall of the core column 3, and the upper surface of the cast-in-place foundation 2 enclose a closed space. Then, concrete is poured into the closed space through the pouring pipe 7. After the concrete solidifies, the template can be removed.

[0052] Preferably, the tall prefabricated structural columns of the factory building in this embodiment further include a diagonal bracing fixing assembly, which includes a diagonal brace 8, a first hinge seat 9, and a second hinge seat 10. The prefabricated column body 1 is rectangular, and a first hinge seat 9 is fixedly installed in the middle of each side wall of the prefabricated column body 1. A second hinge seat 10 corresponding to the first hinge seat 9 is fixedly installed on the ground around the prefabricated column body 1. One end of the diagonal brace 8 is hinged to the first hinge seat 9, and the other end is hinged to the second hinge seat 10.

[0053] Furthermore, the diagonal brace 8 is an adjustable telescopic rod, and the angle between the axis of the diagonal brace 8 and the ground is 45°-60°.

[0054] It should be noted that the purpose of setting up the diagonal bracing fixing components is to provide temporary support for the precast column 1 and prevent it from tilting. Once the concrete at the connection between the precast column 1 and the cast-in-place foundation 2 has completely solidified, the diagonal bracing fixing components can be removed.

[0055] Preferably, a threaded steel sleeve 11 is pre-embedded on the side wall of the precast column 1 corresponding to the installation area of ​​the first hinge seat 9, and the first hinge seat 9 and the threaded steel sleeve 11 are connected by fixing bolts.

[0056] The second hinge seat 10 can also be fixed to the ground in the same way as the first hinge seat 9, which will not be described in detail here.

[0057] Preferably, in this embodiment, second lifting points 14 are provided at intervals along the length of the precast column 1 on its sidewall for external equipment to laterally lift the precast column 1. Preferably, the second lifting points 14 are provided on the upper and lower sides of the threaded steel sleeve 11.

[0058] In this embodiment, the external equipment can be lifting machinery, preferably cranes and hoists. At the prefabrication plant, the crane can use the second lifting point 14 to horizontally lift the prefabricated column 1 onto a transport vehicle; the transport vehicle then transports the prefabricated column 1 to the construction site; at the construction site, the hoist uses the first lifting point 13 to rotate the prefabricated column 1 90° and then vertically lift it onto the cast-in-place foundation 2. After that, the connection and fixing process between the prefabricated column 1 and the cast-in-place foundation 2 is carried out.

[0059] Please see Figure 9 , Figure 9 A schematic diagram of the flipping process for the precast column 1 is shown. Before flipping, a flipping bracket 21 to protect the core column 3 is installed at the bottom of the precast column 1. Then, the precast column 1 is hoisted and flipped, changing it from a horizontal to a vertical position. After the precast column 1 is in a vertical position, the flipping bracket 21 is removed. In addition, during the flipping and hoisting process, multiple tires 22 can be installed under the precast column 1 to assist in the flipping.

[0060] Furthermore, the tilting support 21 includes a cuboid frame and a regular triangular frame fixedly connected to the cuboid frame. The cuboid frame and the regular triangular frame are welded from square steel pipes. A reserved nut is provided on the outer side of the lower part of the precast column 1. The cuboid frame is fitted around the periphery of the precast column 1 and is connected to the reserved nut by fixing bolts. The regular triangular frame is located outside the core column 3. During the tilting and lifting process of the precast column 1, the precast column 1 and the tilting support 21 are tilted using one corner of the regular triangular frame as a fulcrum.

[0061] Please see Figure 6 and Figure 7 , Figure 6 A top view of the precast column is shown. Figure 7 A structural schematic diagram of the first lifting point 13 is shown. The first lifting point 13 is set at the center of the top of the precast column 1, and multiple vertical steel bars are set around the four edges of the top of the precast column 1.

[0062] Furthermore, in this embodiment, the first lifting point 13 is preferably a lifting ring. The lifting ring has a U-shaped rod-shaped body part 15, and the two ends of the body part 15 are bent outward to form hook parts 16. The hook parts 16 of the lifting ring are embedded in the interior of the precast column body 1.

[0063] It should be noted that the hook 16 of the lifting ring serves as an anchor; the side of the body 15 away from the hook 16 extends to the outside of the precast column 1 for external equipment hoisting.

[0064] Furthermore, the second lifting point 14 has the same structure as the first lifting point 13, and will not be described in detail here.

[0065] Example 2:

[0066] Please see Figure 11 , Figure 11 The diagram shows a front view of the precast column body of the tall precast structural column of the factory building in this embodiment.

[0067] This embodiment provides another type of tall precast structural column for factory buildings. Unlike embodiment 1, the precast column body 1 in this embodiment has a column cap 17 at its top and a corbel 18 in its upper middle part. Preferably, the corbel 18 is positioned between the threaded steel sleeve 11 and the upper second lifting point 14. Furthermore, it should be noted that the column cap 17 and the corbel 18 are integrally cast with the precast column body 1 using concrete.

[0068] In addition, the height of the precast column 1 in this embodiment can be 13.1-13.9 meters, and the weight is about 45 tons.

[0069] It should be noted that the column cap 17 of the precast column body 1, also known as the "column head" or "column top structure", is a partial reinforcement located at the top of the precast column body 1. It is mainly used to enhance the connection and load-bearing performance between the column and the superstructure (such as roof trusses, crane beams, floor slabs, etc.).

[0070] The corbel 18 of the precast column 1, also known as a "cantilever" or "support beam," is used to support crane beams, roof truss brackets, platform beams, or other lateral support components. It is a locally enlarged cantilever short beam structure that plays an important role in transferring and distributing loads.

[0071] The remaining parts that are the same as in Example 1 will not be repeated here.

[0072] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0073] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0074] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0075] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tall precast structural column for factory buildings, characterized in that: It includes precast column body (1), cast-in-place foundation (2) and threaded connection assembly (6); The top of the precast column (1) is provided with a first lifting point (13) for external equipment to vertically lift the precast column (1). The center of the bottom of the precast column (1) is provided with a core column (3) extending downward. Multiple first vertical steel bars (5) are provided around the bottom of the precast column (1). Multiple first vertical steel bars (5) are provided around the core column (3). The cast-in-place foundation (2) is buried under the ground. Multiple second vertical steel bars (4) are pre-embedded around the top of the cast-in-place foundation (2). The precast column (1) is set on the cast-in-place foundation (2) so that the bottom surface of the core column (3) abuts against the upper surface of the cast-in-place foundation (2). The first vertical steel bar (5) is connected to the second vertical steel bar (4) one by one through the threaded connection assembly (6). Concrete is poured in the space enclosed by the bottom wall of the precast column (1), the side wall of the core column (3), and the upper surface of the cast-in-place foundation (2) so that the precast column (1) and the cast-in-place foundation (2) are fixedly connected together.

2. The tall prefabricated structural column of the factory building as described in claim 1, characterized in that: The threaded connection assembly (6) includes a first threaded sleeve (23), a second threaded sleeve (24), and a connecting sleeve (25); The lower end of the first vertical steel bar (5) and the upper end of the second vertical steel bar (4) are respectively provided with external threads. The inner walls of the first threaded sleeve (23), the second threaded sleeve (24) and the connecting sleeve (25) are respectively provided with internal threads. The outer surfaces of the first threaded sleeve (23) and the second threaded sleeve (24) are respectively provided with external threads. The internal thread of the first threaded sleeve (23) is screwed into the external thread at the lower end of the first vertical steel bar (5). The internal thread of the second threaded sleeve (24) is screwed into the external thread at the upper end of the second vertical steel bar (4). The internal thread on the upper side of the connecting sleeve (25) is screwed into the external thread of the first threaded sleeve (23). The internal thread on the lower side of the connecting sleeve (25) is screwed into the external thread of the second threaded sleeve (24).

3. The tall prefabricated structural column of the factory building as described in claim 2, characterized in that: The threaded connection assembly (6) also includes a lock nut (26); The upper end of the inner hole of the connecting sleeve (25) is a tapered hole. The diameter of the opening of the tapered hole is larger than the diameter of the bottom of the tapered hole. The upper part of the outer side of the first threaded sleeve (23) is provided with a step that protrudes outward in the radial direction. The step abuts against the inner wall surface of the tapered hole at the upper end of the connecting sleeve (25). The internal thread of the locking nut (26) is screwed into the external thread of the second threaded sleeve (24), and the locking nut (26) abuts against the lower end face of the connecting sleeve (25).

4. The tall prefabricated structural column of the factory building as described in claim 1, characterized in that: A casting pipe (7) is pre-embedded at the bottom of the precast column (1). One end of the casting pipe (7) is set on the side wall of the precast column (1), and the other end of the casting pipe (7) is set on the bottom wall of the precast column (1).

5. The tall prefabricated structural column of the factory building as described in claim 1, characterized in that: It also includes a diagonal bracing fixing assembly, which includes a diagonal bracing rod (8), a first hinge seat (9), and a second hinge seat (10); The precast column (1) is rectangular. A first hinge seat (9) is fixedly installed in the middle of each side wall of the precast column (1). A second hinge seat (10) corresponding to the first hinge seat (9) is fixedly installed on the ground around the precast column (1). One end of the diagonal brace (8) is hinged to the first hinge seat (9), and the other end is hinged to the second hinge seat (10).

6. The tall prefabricated structural column of the factory building as described in claim 5, characterized in that: A threaded steel sleeve (11) is pre-embedded on the side wall of the precast column (1) corresponding to the installation area of ​​the first hinge seat (9). The first hinge seat (9) and the threaded steel sleeve (11) are connected by fixing bolts.

7. The tall prefabricated structural column of the factory building as described in claim 1, characterized in that: The precast column (1) has second lifting points (14) spaced apart along the length of the precast column (1) on its side wall for external equipment to lift the precast column (1) laterally.

8. The tall prefabricated structural column of the factory building as described in claim 7, characterized in that: The first lifting point (13) and the second lifting point (14) are lifting rings. The lifting rings have a U-shaped rod-shaped body part (15). The two ends of the body part (15) are bent outward to form hook parts (16). The hook parts (16) of the lifting rings are embedded in the interior of the precast column body (1).

9. The tall prefabricated structural column for factory buildings as described in any one of claims 1-8, characterized in that: The top of the precast column (1) is provided with a column cap (17), and the upper middle part of the precast column (1) is provided with a corbel (18).

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