A concrete assembly column and a method of assembling the same

Abstract

This invention relates to the field of building construction technology, specifically to a precast concrete column and its assembly method, comprising: a precast column body and column reinforcement bars, wherein multiple reinforcement sleeves are provided inside the lower end of the precast column body, and the column reinforcement bars are vertically arranged inside the precast column body; the method includes: determining the baseline of the precast concrete column on the horizontal plane using laser latitude and longitude; hoisting the precast concrete column above the baseline; attaching a calibration laser device to the outer surface of the precast concrete column, with the laser emission direction of the calibration laser device vertically downward; adjusting the position of the precast concrete column on the horizontal plane so that the laser emission of the calibration laser device coincides with the baseline; and lowering the precast concrete column so that the bottom vertical reinforcement bars are inserted into the reinforcement sleeves. This invention ensures the accurate positioning of the precast concrete column during installation through laser latitude and longitude and calibration laser device, which greatly shortens the assembly time compared with traditional manual visual inspection and positioning methods. Using laser equipment for positioning reduces the need for workers to directly participate in high-risk work, thereby improving construction safety.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a precast concrete column and its assembly method. Background Technology

[0002] Prefabricated buildings are constructed by assembling prefabricated components on-site. The development of this construction method is considered a major transformation in construction practices and a crucial measure for promoting supply-side structural reform in the construction industry. Prefabricated buildings effectively conserve resources and energy, reduce construction pollution, improve labor productivity and quality and safety, and facilitate the deep integration of the construction industry with informatization and industrialization, fostering new industries and new drivers of growth, and helping to resolve overcapacity. It is essential to vigorously develop prefabricated buildings, emphasizing adherence to the principles of market-led and government-driven development, based on the requirements of applicability, economy, safety, greenness, and aesthetics. This should be promoted in a phased and phased manner, maintaining top-level design and coordinated development, continuously innovating construction methods, and increasing the proportion of prefabricated buildings in new construction.

[0003] However, in prefabricated buildings, the structure of prefabricated concrete columns is relatively simple, and the installation methods have certain limitations. Traditional installation methods include transporting the prefabricated concrete column to the installation location, verifying the dimensions of the pre-reserved reinforcing bars on the ground and the column, lifting and adjusting the orientation of the column, and slowly lowering and stabilizing it. This process usually requires the cooperation of multiple people, including a crane operator, a signalman, an observer, and workers supporting the column. This process is not only time-consuming and labor-intensive, but also involves extremely low observation positions and large, tilted angles. During the process of threading the reinforcing bars through the sleeves, due to inaccurate observation and slow transmission of positional information, localized collisions between the column and the reinforcing bars are prone to occur, causing deformation of the reinforcing bars. This affects the installation quality and efficiency. Therefore, developing a more efficient and precise method for installing prefabricated concrete columns is particularly urgent to meet the needs of the development of prefabricated buildings. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the present invention aims to provide a precast concrete column and its assembly method, which realizes the rapid, safe and accurate assembly of the precast concrete column.

[0005] This invention is achieved through the following technical solution:

[0006] A precast concrete column, comprising:

[0007] A precast column has an upper end and a lower end. The lower end of the precast column is provided with a plurality of steel bar sleeves, and the openings of the steel bar sleeves are located on the lower end face of the precast column.

[0008] The column reinforcement is vertically installed inside the precast column, and the lower end of the column reinforcement is threadedly connected to the upper end of the reinforcement sleeve. The upper end of the column reinforcement passes through the upper end face of the precast column and is located outside the precast column.

[0009] The central axis of the steel bar sleeve coincides with the central axis of the column steel bar, and the layout of the steel bar sleeve is the same as that of the bottom vertical reinforcement. During assembly, the steel bar sleeve is fitted onto the bottom vertical reinforcement.

[0010] Furthermore, each of the steel bar sleeves corresponds to two grout overflow holes, which are located inside the precast column. The outer end of the grout overflow hole is located on the outer wall of the precast column, and the inner end of the grout overflow hole is connected to the interior of the steel bar sleeve.

[0011] Preferably, the two grout overflow holes are respectively connected to the upper and lower ends of the reinforcing bar sleeve.

[0012] Optionally, the upper end face of the precast column is connected to a lifting ring, the upper side of the precast column is provided with an upper embedded screw hole for column installation, and the lower side of the precast column is provided with a lower embedded screw hole for column installation.

[0013] A method for assembling a precast concrete column, comprising assembling the precast concrete column as described above using an assembly tool;

[0014] The assembly tools include: a guide template and a linear calibration laser;

[0015] The assembly method includes:

[0016] The auxiliary line marking position is determined by using the guide template, and the baseline of the concrete assembled column on the horizontal plane is determined by marking along the guide template.

[0017] Hoist the precast concrete column above the baseline;

[0018] The calibration laser is attached to the outer side of the concrete precast column through the back plate of the calibration instrument, and the output laser of the calibration laser is vertically downward and parallel to the ground.

[0019] Adjust the position of the concrete assembly column on the horizontal plane so that the laser emitted by the calibration laser coincides with the scribing line of the baseline.

[0020] The concrete precast column is moved down so that the bottom vertical reinforcement is inserted into the reinforcement sleeve.

[0021] Furthermore, the assembly method also includes: injecting concrete into the steel reinforcement sleeve through the grout overflow hole, sealing the grout overflow hole after the injection is completed, and completing the assembly of the concrete assembly column.

[0022] Alternatively, methods for determining the baseline include:

[0023] Obtain the first distance, which is the vertical distance from the outermost column steel bar to the side of the nearest precast column;

[0024] Determine the thickness of the calibrator's support plate;

[0025] Determine the width of the guide template, which is equal to the sum of the first distance and the thickness of the calibrator backing plate;

[0026] Adjust the width of the guide template and place it at the bottom vertical reinforcement so that the inner side of the guide template connects with the bottom vertical reinforcement, and the outer sides of the two guide templates form a right angle structure.

[0027] Draw lines along the outer surface of the guide template to obtain the baseline.

[0028] Furthermore, the guide template includes: a straight plate and two adjustment units. The two ends of the straight plate are respectively provided with multiple rebar spacing adjustment holes. The distance between two adjacent rebar spacing adjustment holes is equal, and the line connecting the multiple rebar spacing adjustment holes is parallel to the length direction of the guide template.

[0029] The two adjustment units are respectively connected to both ends of the straight plate. The adjustment unit includes: a first straight rod, a first straight plate, a second straight rod, and a second straight plate that are rotatably connected by a rotating shaft in sequence. The two ends of the first straight rod are connected to the two steel bar spacing adjustment holes by pins. The second straight rod is disposed on the inner edge side of the straight plate.

[0030] In use, adjust the angle between the first straight rod and the first straight plate, change the distance between the first straight rod and the second straight rod, and the distance between the second straight rod and the outer edge of the straight plate is the width of the guide template.

[0031] The first straight plate and the second straight plate are provided with unit fixing holes in the middle, and fixing screws are provided in the unit fixing holes to fix the position of the first straight plate and / or the second straight plate relative to the straight plate.

[0032] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0033] This invention utilizes prefabricated steel sleeves and steel bars with a specific internal layout to transform observation from crouching or lying down to standing up, and from oblique viewing to direct viewing. The precise installation design ensures a stable connection between columns, enhancing the overall structural stability and seismic performance.

[0034] Guide templates and calibration lasers provide high-precision measurement data, ensuring the accurate positioning of concrete precast columns during installation. Compared to traditional manual visual inspection and positioning methods, laser equipment can quickly perform positioning and correction, greatly shortening assembly time. Using laser equipment for positioning reduces the need for workers to directly participate in high-risk work, thereby improving construction safety. Attached Figure Description

[0035] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, but do not constitute a limitation on the embodiments of the present invention.

[0036] Figure 1 This is a structural schematic diagram of a precast concrete column according to the present invention.

[0037] Figure 2 This is a schematic diagram of the baseline for an assembly method of a concrete precast column according to the present invention.

[0038] Figure 3 This is another installation diagram of a wireless camera for an assembly method of a concrete precast column according to the present invention.

[0039] Attached reference numerals: 1-Precast column, 2-Column reinforcement, 3-Reinforcement sleeve, 4-Grouting overflow hole, 5-Bottom layer reinforcement, 6-Lifting ring, 7-Upper embedded bolt for column installation, 8-Lower embedded bolt for column installation, 9-Calibrator backplate, 10-Straight plate, 11-Adjustment unit, 12-Reinforcement spacing adjustment hole. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0041] It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "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 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being 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 "under" the second feature includes the first feature being 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.

[0044] Where there is no conflict, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] Example 1

[0046] like Figure 1 As shown, a precast concrete column includes: a precast column body 1 and column steel bars 2;

[0047] The precast column 1 has an upper end and a lower end. Multiple steel bar sleeves 3 are provided inside the lower end of the precast column 1, and the openings of the steel bar sleeves 3 are located on the lower end face of the precast column 1.

[0048] The column reinforcement 2 is vertically installed inside the precast column 1, and the lower end of the column reinforcement 2 is installed at the upper part of the reinforcement sleeve 3, while the upper end of the column reinforcement 2 passes through the upper end face of the precast column 1 and is installed outside the precast column 1.

[0049] The central axis of the steel bar sleeve 3 coincides with the central axis of the column steel bar 2. The layout of the steel bar sleeve 3 is the same as that of the bottom vertical reinforcement 5. During assembly, the steel bar sleeve 3 is fitted onto the bottom vertical reinforcement 5.

[0050] Precast columns 1 are prefabricated in a factory environment, which allows for production under strict control, ensuring the quality of the columns, reducing the need for on-site concrete pouring, and lowering the complexity of on-site operations and dependence on environmental conditions. At the same time, the verticality of the column reinforcement 2 can be ensured during the prefabrication process, providing a solid connection between columns, increasing the overall stability and load-bearing capacity of the structure, and also ensuring the precise connection of the column reinforcement 2, improving the accuracy of construction and the reliability of the overall structure.

[0051] By setting a steel sleeve 3 with an inner diameter larger than that of the column steel bar 2, it is possible to avoid the precast column 1 from impacting the bottom vertical reinforcement 5 during the assembly process, thereby affecting the connection accuracy between the bottom vertical reinforcement 5 and the precast column 1.

[0052] Each rebar sleeve 3 corresponds to two grout overflow holes 4. The grout overflow holes 4 are located inside the precast column 1, with their outer ends located on the outer wall of the precast column 1. The inner ends of the grout overflow holes 4 are connected to the interior of the rebar sleeve 3. The two grout overflow holes 4 are connected to the upper and lower ends of the rebar sleeve 3, respectively.

[0053] After the steel bar sleeve 3 is fitted onto the bottom vertical reinforcement 5, concrete is poured into the steel bar sleeve 3, thereby fixing the bottom vertical reinforcement 5 to the precast column 1. The grout overflow hole 4 can ensure pressure control and uniform distribution of grout during the grouting process, avoid air bubbles and incomplete filling, improve the density and uniformity of the structure, and at the same time, the grout overflow hole 4 can serve as a window to monitor the completion of grouting, ensuring that the grouting process is controllable and visible, and improving the construction quality.

[0054] In addition, to facilitate the movement of the precast concrete column by crane, a lifting ring 6 is connected to the upper end face of the precast column 1, and the upper side of the precast column 1 is provided with upper embedded screw holes for column installation, and the lower side of the precast column 1 is provided with lower embedded screw holes for column installation.

[0055] Example 2

[0056] like Figure 1 and Figure 2 As shown, this embodiment provides a method for assembling a concrete precast column, which uses an assembly tool to assemble the concrete precast column in Embodiment 1.

[0057] Assembly tools include: guide templates and calibration laser.

[0058] Calibration lasers are primarily used for precise calibration of specific objects or small areas. They emit a green laser line for the precise positioning and calibration of specific building elements. During the installation of precast concrete columns, calibration lasers can be used to precisely calibrate the column's exact position, ensuring perfect alignment with the intended location. Green laser light is more easily visible to the human eye than red laser light under certain lighting conditions, especially in bright outdoor environments. This makes calibration lasers particularly effective in precise calibration work, ensuring construction accuracy and quality.

[0059] Assembly methods include:

[0060] The first step is to determine the location of the auxiliary lines using the guide template, and then determine the baseline of the concrete assembled column on the horizontal plane by marking the lines along the guide template; for example... Figure 2 As shown, the methods for determining the baseline include:

[0061] Obtain the first distance, which is the vertical distance from the outermost column steel bar 2 to the side of the nearest precast column 1;

[0062] Determine the thickness of the calibrator support plate; the calibrator support plate is mainly used to prevent the calibrator laser from directly contacting the precast concrete column. In practice, the calibrator support plate can be fixed to the precast concrete column through the pre-embedded screw holes at the bottom of the column installation.

[0063] Determine the width of the guide template, which is equal to the sum of the first distance and the thickness of the calibrator backing plate;

[0064] Adjust the width of the guide template and place it at the bottom vertical reinforcement 5 so that the inner side of the guide template connects with the bottom vertical reinforcement 5, and the outer sides of the two guide templates form a right angle structure; the width of the guide template can be adjusted according to the specific situation so that the resulting rectangular structure can accommodate the precast concrete column and the calibrator backing plate.

[0065] Draw lines along the outer surface of the guide template to obtain the baseline.

[0066] The second step is to hoist the concrete precast column above the baseline; the movement of the concrete precast column is achieved visually by the crane operator.

[0067] The third step is to attach the calibration laser to the outer side of the concrete assembly column through the calibrator back plate 9, and make the emission direction of the emission laser of the calibration laser vertically downward.

[0068] The fourth step is to adjust the position of the precast concrete column on the horizontal plane so that the laser emitted by the calibration laser coincides with the marked lines on the baseline. If the laser calibration instrument is fixed on the back plate 9 of the calibration instrument, one worker can be assigned to fine-tune the position of the precast concrete column. This changes the observation position of the reinforcing steel and sleeve from squatting or lying down to standing, and changes the oblique view to a direct view.

[0069] In addition, if the laser calibrator is not installed on the calibrator back plate 9, the laser calibrator needs to be fixed in the worker's hand and attached to the calibrator back plate 9. This not only fixes the laser calibrator but also allows for direct control of the movement of the precast concrete column.

[0070] Fifth step, lower the concrete assembly column so that the bottom vertical reinforcement 5 is inserted into the steel sleeve 3.

[0071] The sixth step is to inject concrete into the steel sleeve 3 through the grout overflow hole 4, and then seal the grout overflow hole 4 after the grouting is completed, thus completing the assembly of the concrete assembled column.

[0072] Example 3

[0073] To facilitate line marking, the guide template in this embodiment is designed to be adjustable.

[0074] The guide template includes: a straight plate 10 and two adjustment units 11. Multiple steel bar spacing adjustment holes 12 are provided at both ends of the straight plate 10. The distance between two adjacent steel bar spacing adjustment holes 12 is equal. The line connecting the multiple steel bar spacing adjustment holes 12 is parallel to the length direction of the guide template.

[0075] Two adjustment units 11 are respectively connected to both ends of the straight plate 10. The adjustment unit 11 includes: a first straight rod, a first straight plate, a second straight rod and a second straight plate that are rotatably connected by a rotating shaft in sequence. The two ends of the first straight rod are connected to two steel bar spacing adjustment holes 12 by pins. The second straight rod is set on the inner edge side of the straight plate 10.

[0076] Only two adjustment units (11) are needed, and they should be the furthest reinforcing bars. The reason for using multiple holes is that different columns have different sizes and different maximum reinforcing bar spacings. By adjusting the position of the adjustment units, the guide formwork can be used for columns of different sizes.

[0077] In use, adjust the angle between the first straight rod and the first straight plate to change the distance between the first straight rod and the second straight rod. The distance between the second straight rod and the outer edge of the straight plate 10 is the width of the guide template.

[0078] The first straight rod, the first straight plate, the second straight rod, and the second straight plate form a parallelogram structure. By adjusting the distance between the first straight rod and the second straight rod, the width of the guide template can be adjusted, allowing the guide template to adapt to various concrete assembled columns with different structures.

[0079] The first straight plate and the second straight plate are provided with unit fixing holes in the middle, and fixing screws are provided in the unit fixing holes to fix the position of the first straight plate and / or the second straight plate and the straight plate 10.

[0080] Since the positions of the reinforcing bars for different concrete assembled columns are not the same, the second straight rod can always be in contact with the column reinforcing bars by adjusting the position of the adjustment unit 11 on the straight plate 10.

[0081] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0082] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0083] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A method of assembling a concrete assembly column, characterized by, Concrete precast columns are assembled using assembly tools, which include guide templates and a linear calibration laser; the concrete precast column comprises: A precast column (1) has an upper end and a lower end. A plurality of steel bar sleeves (3) are provided inside the lower end of the precast column (1). The opening of the steel bar sleeves (3) is located on the lower end face of the precast column (1). The column reinforcement (2) is vertically installed inside the precast column (1), and the lower end of the column reinforcement (2) is threadedly connected to the upper end of the reinforcement sleeve (3). The upper end of the column reinforcement (2) passes through the upper end face of the precast column (1) and is installed outside the precast column (1). The central axis of the steel sleeve (3) coincides with the central axis of the column steel bar (2). The layout of the steel sleeve (3) is the same as that of the bottom vertical bar (5). During assembly, the steel sleeve (3) is fitted onto the bottom vertical bar (5). Each steel sleeve (3) corresponds to two grout overflow holes (4). The grout overflow holes (4) are located inside the precast column (1), and the outer end of the grout overflow holes (4) is located on the outer wall of the precast column (1). The inner end of the grout overflow holes (4) is connected to the inside of the steel sleeve (3). The guide template includes a straight plate (10) and two adjustment units (11). The two ends of the straight plate (10) are respectively provided with multiple steel bar spacing adjustment holes (12). The distance between two adjacent steel bar spacing adjustment holes (12) is equal, and the line connecting the multiple steel bar spacing adjustment holes (12) is parallel to the length direction of the guide template. The two adjustment units (11) are respectively connected to the two ends of the straight plate (10). The adjustment unit (11) includes: a first straight rod, a first straight plate, a second straight rod and a second straight plate connected to the first straight rod in sequence by a rotating shaft. The two ends of the first straight rod are connected to the two steel bar spacing adjustment holes (12) by pins. The second straight rod is arranged on the inner edge side of the straight plate (10). When in use, adjust the included angle between the first straight rod and the first straight plate, change the distance between the first straight rod and the second straight rod, and the distance between the second straight rod and the outer edge of the straight plate (10) is the width of the guide template; The assembly method includes: The auxiliary line marking position is determined by using the guide template, and the baseline of the concrete assembled column on the horizontal plane is determined by marking along the guide template. Hoist the precast concrete column above the baseline; The calibration laser is attached to the outer side of the concrete precast column through the back plate of the calibration instrument, and the output laser of the calibration laser is vertically downward and parallel to the ground. Adjust the position of the concrete assembly column on the horizontal plane so that the laser emitted by the calibration laser coincides with the scribing line of the baseline. The concrete assembly column is moved down so that the bottom vertical reinforcement (5) is inserted into the reinforcement sleeve (3).

2. The assembly method for a precast concrete column according to claim 1, characterized in that, The two grout overflow holes (4) are respectively connected to the upper and lower ends of the steel bar sleeve (3).

3. The assembly method for a precast concrete column according to claim 1, characterized in that, The upper end face of the precast column (1) is connected to a lifting ring (6).

4. The assembly method for a precast concrete column according to claim 3, characterized in that, The upper side of the precast column (1) is provided with a pre-embedded screw hole for column installation, and the lower side of the precast column (1) is provided with a pre-embedded screw hole for column installation.

5. The assembly method for a precast concrete column according to claim 1, characterized in that, Also includes: Concrete is poured into the steel sleeve (3) through the grout overflow hole (4). After the grouting is completed, the grout overflow hole (4) is sealed to complete the assembly of the concrete assembled column.

6. The assembly method for a precast concrete column according to claim 1, characterized in that, Methods for determining baselines include: Obtain the first distance, which is the vertical distance from the outer edge of the outermost column steel bar (2) to the side of the nearest precast column (1); Determine the distance from the laser spot to the bottom of the calibrator plate; Determine the width of the guide template, which is equal to the sum of the first distance and the thickness of the calibrator backing plate; Adjust the width of the guide template and place the guide template at the bottom vertical rib (5) so that the inner side of the guide template is connected to the bottom vertical rib (5) so that the outer sides of the two guide templates form a right angle structure. Draw lines along the outer surface of the guide template to obtain the baseline.

7. The assembly method for a precast concrete column according to claim 1, characterized in that, The first straight plate and the second straight plate are provided with unit fixing holes in the middle, and fixing screws are provided in the unit fixing holes to fix the position of the first straight plate and / or the second straight plate to the straight plate (10).

Images