An adjustable precast column

Abstract

The utility model relates to the field of prefabricated column discloses an adjustable prefabricated column, including pier column and auxiliary prefabricated part, auxiliary prefabricated part is the column of frame cross section, pier column passes through auxiliary prefabricated part, and the annular post-cast strip is left between pier column and auxiliary prefabricated part, and the upper end of auxiliary prefabricated part is used for supporting the edge of prefabricated composite board. Both can guarantee the connecting quality of node, and can also flexibly adjust according to the specific situation of construction site, effectively improve construction efficiency and the integrity of structure.

Description

Technical Field

[0001] This utility model relates to the field of precast columns, specifically to an adjustable precast column. Background Technology

[0002] Prefabricated structures, highly adaptable to industrialized and standardized production needs, offer numerous advantages such as high construction safety, convenient construction management, and minimal environmental impact, making them a structural system with significant development potential in the construction industry. In traditional prefabricated building construction, the height of precast columns is generally predetermined based on the floor height. Connections between components are then achieved by linking pre-reserved reinforcing bars at beam-column joints and pouring concrete. However, this connection method has several drawbacks: firstly, multiple precast components converge at joints, resulting in complex connections. Construction workers must spend considerable time and effort precisely aligning the pre-reserved reinforcing bars of each component before concrete pouring, significantly reducing construction efficiency; secondly, the quality of on-site concrete pouring is subject to various factors and difficult to control precisely. Joints, as critical structural components, directly affect on-site assembly efficiency, overall load-bearing capacity, and structural durability. Especially in large-span building projects such as platforms, the quality of joint concrete is paramount; any problems can seriously threaten the safety and stability of the entire building.

[0003] Furthermore, the dimensions and connection methods of existing prefabricated components are mostly fixed during the design phase, leaving very little room for adjustment on the construction site. This results in difficulties in installing prefabricated components smoothly if site conditions do not match the design or if there are significant errors in the factory processing. This seriously affects the construction progress and quality, causing numerous inconveniences and additional costs to the project. Utility Model Content

[0004] The present invention aims to provide an adjustable precast column for supporting precast composite slabs, which can be flexibly adjusted according to the specific conditions of the construction site, so as to effectively solve the problems of low construction efficiency, difficulty in quality control and insufficient construction flexibility in the existing technology, thereby promoting the further development of the prefabricated building industry.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable precast column, including a pier column and an auxiliary precast component, wherein the auxiliary precast component is a column with a frame-shaped cross section, the pier column vertically penetrates the auxiliary precast component, an annular post-pouring strip is formed between the pier column and the auxiliary precast component, and the upper end of the auxiliary precast component is used to support the edge of the precast composite slab.

[0006] The beneficial effects of this plan are: 1. In this scheme, the height of the pier column does not need to be determined based on the single-story height. The height of the auxiliary precast component can be determined based on the story height. The top elevation of the auxiliary precast component is determined based on the elevation of the precast composite slab. Then, the annular post-cast strip between the pier column and the auxiliary precast component is poured. The precast composite slab is supported on the auxiliary precast component.

[0007] 2. The precast composite slabs are directly supported on the auxiliary precast components. Therefore, the precast columns do not need to be broken or cast in place at the location of the precast composite slabs. The entire precast column is precast in the factory, which can ensure the quality of the intersection of the precast composite slabs and precast components, thereby ensuring the load-bearing capacity and durability of the main structure.

[0008] 3. In this scheme, the elevation of the precast composite slab is determined first, and then the auxiliary precast components are installed. The auxiliary precast components and the piers are designed separately in the processing plant so that they can be adjusted according to the actual elevation of the precast composite slab during on-site installation. This increases the accuracy and flexibility of construction and avoids situations where installation is impossible due to processing errors.

[0009] 4. Set up an annular post-pouring strip to facilitate on-site connection of auxiliary precast components and piers, thereby increasing the overall integrity of the final structure.

[0010] 5. The dimensions of the piers are selected according to factors such as load, while the auxiliary precast components can be produced in the same size. As long as the pier can pass through the auxiliary precast components, it is acceptable. This not only reduces the production cost of the auxiliary precast components, but also allows the auxiliary precast components to be moved freely between piers of different sizes, increasing the flexibility of construction scheduling and improving construction efficiency.

[0011] Furthermore, the auxiliary prefabricated components include two centrally symmetrical L-shaped prefabricated components, which are joined together to form a frame-shaped cross section.

[0012] Furthermore, the upper end of the L-shaped prefabricated component is provided with an outer flange, which is used to support the edge of the composite plate. The outer flange extends horizontally to form a support structure.

[0013] Furthermore, the two ends of the L-shaped preform are a notched end and a protruding end, respectively, and the notched end of one L-shaped preform and the protruding end of the other L-shaped preform are shaped to match.

[0014] Furthermore, it also includes connecting bolts. The notched end of the L-shaped precast component has a through hole on the side away from the other L-shaped precast component. The connecting bolt passes through the through hole and is threadedly connected to the protruding end of the other L-shaped precast component. The notched end has a through hole for the bolt to pass through, and the protruding end has an internally threaded hole.

[0015] Furthermore, the precast composite slab includes a precast slab and a cast-in-place slab, with the edges of the precast slab supported on an outer flange, and the cast-in-place slab and the annular post-cast strip integrally formed.

[0016] Furthermore, the edges of the precast composite slab overlap the outer flange, a cast-in-place layer is provided above the precast composite slab, and a reserved steel bar is provided on the upper surface of the L-shaped precast component. The reserved steel bar is inverted L-shape, and a limiting groove is formed between the reserved steel bar and the upper surface of the L-shaped precast component. The edge of the precast slab extends into the limiting groove. The cast-in-place slab is a reinforced concrete structure, and the steel bars of the cast-in-place slab are connected to the reserved steel bars.

[0017] Furthermore, the pier is a precast column, and the lower surface of the pier is provided with several vertical threaded rods. The lower end of the threaded rod is threadedly connected to a threaded sleeve. The threaded sleeve is used to level the bottom of the pier during installation. The installation height and levelness of the pier are adjusted by rotating the threaded sleeve.

[0018] Furthermore, the lower end of the L-shaped precast component is supported on the backfill soil or foundation structure.

[0019] This solution also has the following effects: 1. The auxiliary prefabricated component is split into two L-shaped prefabricated components, which take up less space after unpacking, making it easier to transport and install. It also allows the pier to be installed first, followed by the auxiliary prefabricated component, so that the installation position of the auxiliary prefabricated component can be adjusted in time on site according to the installation status of the pier. If the auxiliary prefabricated component is installed first, followed by the pier, the large size of the pier makes it very inconvenient to adjust the pier, thus increasing the flexibility of construction.

[0020] 2. The cast-in-place slab and the annular post-cast strip are integrally formed, increasing the integrity of the slab and column.

[0021] 3. The limiting groove formed by the reserved steel bars limits the precast slab. The connection between the reserved steel bars and the steel bars of the cast-in-place slab enhances the structural continuity, thereby ensuring the structural stability.

[0022] 4. Level the bottom of the pier column by using threaded rods and threaded sleeves to ensure that the force on the bottom is even and does not easily cause tilting. Attached Figure Description

[0023] Figure 1 This is a three-dimensional diagram of Example 1; Figure 2 This is a schematic diagram of the installation of the L-shaped prefabricated component in Example 1; Figure 3 This is a top view of Example 1; Figure 4 This is a top view of the L-shaped prefabricated component of Example 1; Figure 5 This is a schematic diagram of the connection between the L-shaped prefabricated component and the prefabricated composite slab in Example 1; Figure 6 This is a three-dimensional diagram of Example 2. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: pier column 1, threaded rod 11, threaded sleeve 12, L-shaped precast component 2, notched end 21, protruding end 22, connecting bolt 23, outer flange 3, reserved reinforcing bar 4, reinforcing bar of cast-in-place slab 5, precast slab 6, and annular post-cast strip.

[0025] Example 1 Example 1 is basically as follows Figures 1-5 As shown: An adjustable precast column includes a pier 1 and auxiliary precast components. The pier 1 is supported on the ground, and the lower end of the L-shaped precast component 2 is supported on the backfill soil. Figure 1 As shown, the auxiliary precast component is a column with a frame-shaped cross-section. Pier 1 passes through the auxiliary precast component, as shown. Figure 3 As shown, an annular post-cast strip is left between pier column 1 and auxiliary precast components.

[0026] like Figure 2 As shown, the auxiliary precast component includes two L-shaped precast components 2, which are joined together to form a frame-shaped cross-section. The upper outer sides of each L-shaped precast component 2 are integrally formed with an outer flange 3, which supports the edge of the composite slab. A pre-embedded reinforcing bar 4, which is inverted L-shaped, is embedded on the upper surface of the L-shaped precast component 2, forming a limiting groove between the pre-embedded reinforcing bar 4 and the upper surface of the L-shaped precast component 2. An adjustable precast column supports a precast composite slab, which includes a precast slab 6 and a cast-in-place slab, such as... Figure 5 As shown, the edge of the precast slab 6 is supported on the outer flange 3 and extends into the limiting groove. The cast-in-place slab is a reinforced concrete structure. The reinforcing bars 5 and the reserved reinforcing bars 4 of the cast-in-place slab are connected. The cast-in-place slab and the annular post-cast strip are integrally formed by concrete pouring.

[0027] like Figure 3 , Figure 4 As shown, the horizontal cross-section of the L-shaped precast component 2 is L-shaped. The two ends of the L-shaped precast component 2 are a notched end 21 and a protruding end 22, respectively. The notched end 21 of one L-shaped precast component 2 and the protruding end 22 of the other L-shaped precast component 2 are shaped to match. The notched end 21 of the L-shaped precast component 2 has a through hole on the side away from the other L-shaped precast component 2. The connecting bolt 23 passes through the through hole and is threadedly connected to the protruding end 22 of the other L-shaped precast component 2. The connecting bolt 23 is an M20 bolt.

[0028] Example 2 Example 2 is based on Example 1: as follows Figure 6As shown, pier 1 is a rectangular precast column. Four threaded rods 11 are vertically embedded on the lower surface of pier 1, located at the four corners of pier 1. Threaded sleeves 12 are threadedly connected to the lower ends of the threaded rods 11. The threaded sleeves 12 are used for bottom leveling during pier 1 installation. Specifically, pier 1 is placed on the base layer, which can be a concrete or steel structure. Then, the threaded sleeves 12, which are not yet pressed against the base layer, are rotated to ensure they are pressed firmly against the base layer. This ensures that the four threaded sleeves 12 are evenly stressed and all press firmly against the base layer, thus ensuring the stability of pier 1 during installation.

[0029] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An adjustable precast column, characterized by: It includes piers and auxiliary precast components. The auxiliary precast components are columns with a frame-shaped cross section. The piers vertically penetrate the auxiliary precast components, and an annular post-cast strip is formed between the piers and the auxiliary precast components. The upper end of the auxiliary precast components is used to support the edge of the precast composite slab.

2. An adjustable precast column according to claim 1, wherein: The auxiliary prefabricated component is formed by assembling two centrally symmetrical L-shaped prefabricated components to form a frame-shaped cross section.

3. An adjustable precast column according to claim 2, characterized in that: The upper end of the L-shaped prefabricated component is integrally formed with an outer flange, which extends horizontally to form a support structure. The support structure is used to support the edge of the prefabricated composite slab.

4. An adjustable precast column according to claim 3, wherein: The two ends of the L-shaped prefabricated component are a notched end and a raised end, respectively. The notched and raised ends of the two L-shaped prefabricated components are complementary in shape, and they are joined and positioned by inserting the raised end into the notched end.

5. An adjustable precast column according to claim 4, wherein: Two L-shaped prefabricated parts are fixed by connecting bolts. The notched end is provided with a through hole for the bolt to pass through, and the protruding end is provided with an internal thread hole. The bolt (23) passes through the through hole and is threadedly connected to the internal thread hole.

6. An adjustable precast column according to claim 3, characterized in that: The precast composite slab includes a precast slab and a cast-in-place slab. The edges of the precast slab are supported on an outer flange, and the cast-in-place slab and the annular post-cast strip are integrally formed.

7. An adjustable precast column according to claim 6, wherein: The edges of the precast composite slab overlap the outer flange. A cast-in-place layer is provided above the precast composite slab. Reserved steel bars are provided on the upper surface of the L-shaped precast component. The steel bars of the cast-in-place layer are connected to the reserved steel bars. The cast-in-place layer and the annular post-cast strip are integrally cast with concrete.

8. An adjustable precast column according to claim 1, wherein: The pier is a precast column, with several vertical threaded rods pre-embedded at the bottom. The lower end of the threaded rod is threadedly connected to a rotatable and adjustable threaded sleeve. The installation height and levelness of the pier can be adjusted by rotating the threaded sleeve.

9. An adjustable precast column according to claim 1, wherein: The lower end of the L-shaped precast component is supported on the backfill soil layer or foundation structure.

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