Construction method of special-shaped fair-faced concrete structure

Abstract

This application discloses a construction method for irregularly shaped fair-faced concrete structures, including the following steps: cleaning the base layer; setting an auxiliary positioning device above the installation area of ​​the irregularly shaped fair-faced concrete structure; the auxiliary positioning device includes a sliding guide rail, a magnetic mounting base, a marking device, and a laser irradiator; the sliding guide rail is ferromagnetic, and the magnetic mounting base is magnetically attracted to the sliding guide rail and slidably connected to the sliding guide rail through a sliding guide groove; the marking device includes a traveling base with marking graphite columns; multiple vertical sliding rods are inserted into the traveling base, and the vertical sliding rods are vertically slidably connected to the magnetic mounting base; the laser irradiator is detachably mounted on the magnetic mounting base, allowing the laser path to be used to assist in the positioning of vertical reinforcing bars and formwork. This application can more accurately control the spacing and arrangement trajectory of the vertical reinforcing bars in the fair-faced concrete structure.

Description

Technical Field

[0001] This application relates to the field of fair-faced concrete construction technology, and in particular to construction methods for irregular fair-faced concrete structures. Background Technology

[0002] Large-scale, irregularly shaped, curved exposed concrete is frequently used in large-scale buildings, requiring a balance between load-bearing capacity and decorative effect. Exposed concrete structures are particularly suitable for the construction of cultural and tourism venues, highlighting the building's aesthetic appeal and integrating it organically with the surrounding landscape, reflecting a pursuit of architectural beauty. While the construction process for exposed concrete structures is similar to that of conventional concrete structures, it demands higher standards, involves a longer construction period, and involves significant variations in time and space. These design requirements place high demands on concrete mix design, formwork erection, concrete pouring, quality control, and finished product protection.

[0003] Compared to conventional concrete structures, fair-faced concrete structures have a denser arrangement of reinforcing bars, making them more difficult to tie. Furthermore, when tying reinforcing bars in irregularly shaped areas such as curved surfaces, the vertical reinforcing bars need to be arranged along a curved trajectory, making it difficult to calibrate the spacing between vertical reinforcing bars using measuring tools such as rulers and compasses. This makes it difficult to control the spacing between adjacent vertical reinforcing bars and the arrangement trajectory of the vertical reinforcing bars. Summary of the Invention

[0004] In order to more accurately control the spacing and arrangement trajectory of the vertical reinforcing bars in fair-faced concrete structures, this application provides a construction method for irregular fair-faced concrete structures.

[0005] The construction method for irregularly shaped fair-faced concrete structures provided in this application adopts the following technical solution:

[0006] A construction method for irregularly shaped fair-faced concrete structures includes the following steps: cleaning the base layer; setting up an auxiliary positioning device above the installation area of ​​the irregularly shaped fair-faced concrete structure; the auxiliary positioning device includes a sliding guide rail, a magnetic mounting base marking device, and a laser irradiator; when supporting the sliding guide rail, several supporting steel bars for supporting the sliding guide rail are pre-supported, and the several supporting steel bars are equidistantly spaced along the extension path of the sliding guide rail; the sliding guide rail includes two guide steel bars arranged side by side; the magnetic mounting base is simultaneously attracted to the two guide steel bars of the sliding guide rail; the magnetic mounting base has two sliding guide grooves, and the two sliding guide grooves are respectively slidably connected to the two guide steel bars; the sliding guide rail is ferromagnetic, and the magnetic mounting base is attracted to the sliding guide rail by magnetic force and slidably connected to the sliding guide rail through the sliding guide grooves; the marking device includes a traveling base, the traveling base has marking graphite columns, the traveling base has telescopic holes for installing the marking graphite columns, one end of the telescopic holes is downward through, and the... A compression spring is installed inside the telescopic hole, located above the marking graphite column. The compression spring forces the marking graphite column to abut against the base surface. Multiple vertical sliding rods are inserted into the walking base, and these vertical sliding rods are vertically connected to the magnetic mounting base. The vertical sliding rods can be installed at different positions on the magnetic mounting base. The magnetic mounting base slides on the sliding guide rail, and the magnetic mounting base drives the marking device along the surface of the base layer via the vertical sliding rods, allowing the marking graphite column of the marking device to draw the positioning lines of the template and the trajectory lines of the vertical reinforcing bars on the base surface. The laser irradiator is detachably installed on the magnetic mounting base, and can be installed at different positions on the magnetic mounting base, allowing the laser irradiator's optical path to be used to assist in the positioning of the vertical reinforcing bars and the template. When tying the reinforcing bars, the laser irradiator is gradually moved, using its optical path as a positional reference for the vertical reinforcing bars. During template erection, the laser irradiator's optical path serves as a positional reference for the template.

[0007] By adopting the above technical solution, an auxiliary positioning device is set up on the base layer. The magnetic mounting base of the auxiliary positioning device can slide along the sliding guide rail. When the magnetic mounting base slides, it can drive the marking device to move synchronously through the vertical sliding rod. During the movement of the marking device, the marking graphite column can draw trajectory marks on the base layer surface, which can be used as a positioning reference for the vertical reinforcement or formwork support. Furthermore, during the binding and support of vertical reinforcement and the support of formwork, the magnetic mounting base can be stably stopped at different positions through magnetic attraction, so that the optical path of the laser irradiator can continue to play the role of position reference, which is conducive to improving the accuracy of reinforcement binding and formwork support. Using two guide steel bars as the sliding guide rail, and the sliding guide rail is erected using several supporting steel bars, makes it easier to obtain materials and manufacture the auxiliary positioning device. Moreover, the guide steel bars can be combined with the steel skeleton of the irregular fair-faced concrete structure without disassembly; that is, the installation of the guide steel bars can be regarded as part of the preliminary part of the reinforcement binding, which is more efficient. Furthermore, the supporting steel bars and sliding guide rails can serve as components of the steel reinforcement skeleton of irregular fair-faced concrete structures, eliminating the need for additional land area to be occupied by the supporting steel bars and sliding guide rails, thus facilitating construction requirements in confined and limited spaces.

[0008] Optionally, during the process of tying the reinforcing bars, each vertical reinforcing bar is tied to the two strands of guide reinforcing bars of the sliding guide rail.

[0009] By adopting the above technical solution, during the process of tying the reinforcing bars, each vertical reinforcing bar is tied to the guide reinforcing bar, which can gradually strengthen the guide reinforcing bar. This makes the laser irradiator more reliable when used as a reference for tying vertical reinforcing bars and erecting formwork.

[0010] Optionally, the magnetic mounting base is provided with a driving structure, which includes a battery, a drive motor, and a roller. The battery and the drive motor are both fixedly mounted on the magnetic mounting base. The battery is electrically connected to the drive motor. A power switch is provided between the circuits of the battery and the drive motor. The roller is rotatably mounted on the magnetic mounting base. The drive motor is used to drive the roller to rotate. The surface of the roller abuts against the sliding guide rail. There is frictional damping between the surface of the roller and the sliding guide rail.

[0011] By adopting the above technical solution, when the drive motor is powered on, it can drive the roller to rotate, so that dynamic friction is formed between the roller and the sliding guide rail, thereby driving the magnetic mounting base to slide along the sliding guide rail, and thus indirectly driving the scribing device to draw a trajectory line on the surface of the base layer.

[0012] Optionally, the magnetic mounting base is provided with an oblique laser irradiator, the optical path of which is inclined and located in the same vertical plane as the optical path of the laser irradiator.

[0013] By adopting the above technical solution, the optical paths of the oblique laser irradiator and the laser irradiator are in the same plane, so that the oblique laser irradiator and the laser irradiator can be used as references for the installation of vertical steel bars, making it easier to control the positional accuracy of the vertical steel bars; furthermore, the combination of the oblique laser irradiator and the laser irradiator can adapt to steel bars with curved or inclined shapes, which can improve the applicability of the auxiliary positioning device.

[0014] Optionally, each of the guide bars is formed by connecting multiple segments of steel bars in series, and each segment of steel bar corresponds to a template.

[0015] By adopting the above technical solution, the guide steel bars are made of multiple segmented steel bars connected in series, making the guide steel bars easier to manufacture and install.

[0016] Optionally, the width of the sliding guide groove is greater than the diameter of the guide bar, and the sliding guide groove of the magnetic mounting base is provided with an elastic abutment member, which can force the guide bar to press against the inner wall of one side of the sliding guide groove.

[0017] By adopting the above technical solution, the elastic abutment component forces the guide steel bar to press against the inner wall of one side of the sliding guide groove, which can make the extension direction of the sliding guide groove consistent with the extension direction of the guide steel bar, thereby helping to ensure the positional accuracy of the magnetic mounting seat on the sliding guide rail.

[0018] Optionally, several vertical short bars are welded together between the two guide bars. The vertical short bars are distributed at intervals along the extension direction of the guide bars, and the diameter of the vertical short bars is smaller than the diameter of the guide bars.

[0019] By adopting the above technical solution, the two guide bars are connected by vertical short rods, so that the two guide bars are connected into a whole and the spacing between the two guide bars remains stable.

[0020] Optionally, the templates are divided into full-plane templates, full-curved templates and curve-to-straight transition templates according to their structure. The curve-to-straight transition template includes curved surfaces and straight surfaces, with the straight surfaces connecting to the full-plane template.

[0021] By adopting the above technical solution, the straight part of the curved-straight transition template is connected and installed with the full-plane template through the straight part, making it easier to connect and align the curved-straight transition template with the full-plane template, which is beneficial to control the joints between templates and thus reduce the situation of water wetting during pouring.

[0022] Optionally, optical fiber structures are provided on both sides of the outer surface of the template, and the optical fiber structures serve as the laser path for the laser irradiator; when installing the template, the optical path of the laser irradiator passes through the optical fiber structures to position the template.

[0023] By adopting the above technical solution, when setting up the template, the positional accuracy of the template can be determined by observing whether the laser passes through the fiber optic structure, which helps to improve the installation accuracy of the template.

[0024] Optionally, the template is divided into upper and lower segments, and the optical fiber structure on the template is also divided into corresponding segments, with adjacent upper and lower segments of the optical fiber structure being interconnected.

[0025] By adopting the above technical solution, when the template needs to be divided into multiple segments along the height direction, the connection and alignment between the upper and lower segments of the template can be determined by observing whether the laser passes through each segment of the fiber optic structure at the same time.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] An auxiliary positioning device is installed on the base layer. The magnetic mounting base of the auxiliary positioning device can slide along the sliding guide rail. When the magnetic mounting base slides, it can drive the marking device to move synchronously through the vertical sliding rod. During the movement of the marking device, the marking graphite column can draw trajectory marks on the base layer surface, which can be used as a positioning reference for the vertical reinforcement or formwork support. Furthermore, during the process of tying and supporting the vertical reinforcement and supporting the formwork, the optical path of the laser irradiator can continue to serve as a positional reference, which is beneficial to improving the accuracy of reinforcement tying and formwork support.

[0028] The optical paths of the oblique laser irradiator and the laser irradiator are in the same plane, allowing them to serve as references for the installation of vertical reinforcing bars, making it easier to control the positional accuracy of the vertical reinforcing bars. Furthermore, the combination of the oblique laser irradiator and the laser irradiator can adapt to reinforcing bars in curved or inclined states, thus improving the applicability of the auxiliary positioning device.

[0029] When setting up formwork, observing whether the laser passes through the fiber optic structure can determine the positional accuracy of the formwork, which helps to improve the installation accuracy of the formwork. Attached Figure Description

[0030] Figure 1 This is a flowchart of the construction method for the irregular fair-faced concrete structure in Example 1.

[0031] Figure 2 This is a schematic diagram of the installation state of the auxiliary positioning device in Embodiment 1.

[0032] Figure 3 yes Figure 2 A magnified view of point A in the middle.

[0033] Figure 4 This is a schematic diagram of the installation status of the magnetic mounting base and the laser irradiator in Example 1.

[0034] Figure 5 This is a cross-sectional view of the structure of the scribing device in Example 1.

[0035] Figure 6 This is a schematic diagram of the installation location of the optical fiber structure in Example 1.

[0036] Figure 7 This is a schematic diagram of the installation status of the magnetic mounting base and the oblique laser irradiator in Embodiment 2.

[0037] Figure 8 This is a schematic diagram of the installation status of the magnetic mounting base and the oblique laser irradiator in Embodiment 3.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10. Auxiliary positioning device; 1. Sliding guide rail; 11. Guide steel bar; 12. Vertical short rod; 2. Magnetic mounting base; 21. Sliding guide groove; 22. Magnet; 23. Through hole; 24. Elastic abutment; 25. Bolt hole; 26. Roller groove; 27. Sliding hole; 28. Guide tube; 3. Laser irradiator; 31. Bolt; 4. Support steel bar; 5. Angled laser irradiator; 51. Wedge-shaped gasket; 6. Marking device; 61. Walking base; 611. Telescopic hole; 612. Insertion hole; 62. Marking graphite column; 63. Compression spring; 631. Insertion sleeve; 64. Vertical slide rod; 65. Set screw; 7. Drive structure; 71. Battery; 72. Drive motor; 721. Motor base; 73. Roller; 74. Power switch; 75. Gear assembly; 20. Template; 201. Fiber optic structure. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail. Example 1

[0041] This application discloses a construction method for irregularly shaped fair-faced concrete structures. (Refer to...) Figure 1 The construction method for irregularly shaped fair-faced concrete structures includes the following steps:

[0042] Step 1, cleaning the base layer, removing loose soil and debris from the base surface;

[0043] Step 2: An auxiliary positioning device 10 is installed above the installation area of ​​the irregular fair-faced concrete structure. The auxiliary positioning device 10 includes a sliding guide rail 1, a magnetic mounting base 2, a marking tool 6, and a laser irradiator 3. The sliding guide rail 1 is supported above the installation area of ​​the irregular fair-faced concrete structure.

[0044] Reference Figure 2The sliding guide rail 1 includes two guide steel bars 11 arranged side by side, with pre-set spacing marks on the guide steel bars 11. Each guide steel bar 11 is formed by connecting multiple segments of steel bars in series. The joints of two segments of steel bars are welded together. Each segment of steel bar corresponds to a template 20. Several vertical short rods 12 are welded together between the two guide steel bars 11. The vertical short rods 12 are made of steel and are distributed at intervals along the extension direction of the guide steel bars 11. The diameter of the vertical short rods 12 is smaller than the diameter of the guide steel bars 11.

[0045] When setting up the sliding guide rail 1, several supporting steel bars 4 are pre-set in the installation area of ​​the irregular fair-faced concrete structure. The supporting steel bars 4 are set vertically and are equidistantly spaced along the extension path of the sliding guide rail 1. The two guide steel bars 11 of the sliding guide rail 1 are tied or welded to the supporting steel bars 4.

[0046] Reference Figure 3 and Figure 4 The magnetic mounting base 2 is simultaneously attracted to the two guide steel bars 11 of the sliding guide rail 1. The magnetic mounting base 2 is located on the side of the guide steel bars 11 away from the supporting steel bars 4. The main body material of the magnetic mounting base 2 is a relatively lightweight material such as aluminum alloy or plastic. The magnetic mounting base 2 is provided with two sliding guide grooves 21, which are slidably connected to the two guide steel bars 11 respectively. Two magnets 22 are embedded on the side of the magnetic mounting base 2 away from the sliding guide grooves 21, and the two magnets 22 correspond to the two sliding guide grooves 21 respectively. The inner wall of the sliding guide grooves 21 away from the groove opening is provided with through holes 23, which are connected to the installation space of the magnets 22.

[0047] The width of the sliding guide groove 21 is greater than the diameter of the guide steel bar 11. The sliding guide groove 21 of the magnetic mounting base 2 is provided with an elastic abutment 24. The elastic abutment 24 can force the guide steel bar 11 to press against the inner wall of one side of the sliding guide groove 21. The elastic abutment 24 is a spring piece. One end of the spring piece is inserted into the side wall of the sliding guide groove 21, and the other end of the spring piece extends towards the magnet 22.

[0048] Reference Figure 5The marking device 6 includes a base 61 with wheels and a marking graphite column 62. The base 61 has a telescopic hole 611 for mounting the graphite column 62, with both ends of the hole open to the other. The upper end of the hole has an internal thread, and a set screw 65 is mounted on the base 61 via this thread. A compression spring 63 is welded to the set screw 65 and located inside the telescopic hole 611, above the marking graphite column 62. A connecting sleeve 631 is welded to the end of the compression spring 63 furthest from the set screw 65. The upper end of the graphite column is inserted into the connecting sleeve 631. The compression spring 63 forces the marking graphite column to... The column 62 abuts against the base surface; the walking base 61 is provided with two vertical sliding rods 64 (the number of vertical sliding rods can be set to four or more as needed). The walking base 61 is provided with a hole 612 that is adapted to the vertical sliding rod 64. The lower end of the hole 612 is closed and the upper end is open. The vertical sliding rod 64 is vertically slidably connected to the magnetic mounting base 2. The magnetic mounting base 2 is provided with a sliding hole 27 for the vertical sliding rod 64 to pass through and connect. A guide tube 28 is fixedly connected to the edge of the opening of the sliding hole 27. There are multiple sets of sliding holes 27. Each set of sliding holes 27 has two. The two vertical sliding rods 64 cooperate with different sets of sliding holes 27 to achieve installation at different positions on the magnetic mounting base 2.

[0049] The magnetic mounting base 2 slides on the sliding guide rail 1. The magnetic mounting base 2 drives the scribing device 6 to move along the surface of the base layer through the vertical sliding rod 64, so that the scribing graphite column 62 of the scribing device 6 draws the positioning line of the template 20 and the trajectory line of the vertical reinforcement on the surface of the base layer.

[0050] Reference Figure 4 The laser irradiator 3 is detachably mounted on the magnetic mounting base 2 via bolts 31. The laser irradiator 3 is attracted to the sliding guide rail 1 via the magnetic mounting base 2 and is slidably connected to the sliding guide rail 1. The magnetic mounting base 2 is provided with multiple mounting positions, and different mounting positions correspond to different bolt holes 25. The laser irradiator 3 can be installed in different positions on the magnetic mounting base 2. When the laser irradiator 3 is installed in different mounting positions and slides along the guide rail, the light path of the laser irradiator 3 can draw different trajectory lines on the base layer, so that the light path of the laser irradiator 3 can be used for positioning and laying out the template 20 and the vertical reinforcement.

[0051] Step 3: Using the light path of the laser irradiator 3, mark the positioning lines of the template 20 and the trajectory lines of the vertical reinforcing bars on the base layer.

[0052] Step 4, binding the reinforcing bars; when binding the vertical reinforcing bars, gradually move the laser irradiator 3 so that the optical path of the laser irradiator 3 serves as a position reference for the vertical reinforcing bars; during the binding process, bind and connect each vertical reinforcing bar to the two guide bars 11 of the sliding guide rail 1.

[0053] Step 5: Erect template 20. During the erection of template 20, change the mounting position of laser irradiator 3 on magnetic mounting base 2 so that the optical path of laser irradiator 3 serves as the position reference for template 20. In this process, the optical path of laser irradiator 3 is used to calibrate the outer surface of template 20. Template 20 is fixed by tie bolts 31, steel pipes and structural steel.

[0054] Reference Figure 6 Depending on their structure, templates 20 are categorized into full-planar templates, full-curved templates, and curved-to-straight transition templates. The curved-to-straight transition template includes curved and straight sections, with the straight section connecting to the full-planar template 20. Optical fiber structures 201 are adhesively fixed to both edges of the outer surface of template 20. These optical fiber structures 201 are parallel to the edges of the outer surface of template 20 and can be made of glass or plastic. The diameter of the optical fiber structure is between 2-3 mm, and the optical fiber structure 201 serves as the laser path for the laser irradiator 3. When setting up the template, the optical path of the laser irradiator 3 is arranged through the optical fiber structure. By observing the laser's path through the optical fiber structure 201, the positional accuracy of template 20 can be determined, thereby improving the installation accuracy of template 20.

[0055] Furthermore, the template 20 is divided into upper and lower segments, and the optical fiber structure 201 on the template 20 is correspondingly divided into segments, with adjacent upper and lower segments of the optical fiber structure 201 interconnected. The alignment of the upper and lower segments of the template 20 can be determined by observing whether the laser passes through each segment of the optical fiber structure 201 simultaneously.

[0056] The implementation principle of the construction method for irregular fair-faced concrete structures in this application embodiment is as follows: An auxiliary positioning device 10 is set on the base layer. The magnetic mounting base 2 of the auxiliary positioning device 10 can slide along the sliding guide rail 1. When the magnetic mounting base 2 slides, it can drive the marking device 6 to move synchronously through the vertical sliding rod 64. During the movement of the marking device 6, the marking graphite column 62 can draw trajectory marks on the base layer surface as a positioning reference for the vertical reinforcement or formwork 20. Furthermore, during the binding and setting of vertical reinforcement and the setting of formwork 20, the magnetic mounting base 2 can be stably stopped at different positions through magnetic attraction, so that the optical path of the laser irradiator 3 can continue to play the role of position reference, which is beneficial to improving the accuracy of reinforcement binding and formwork 20 setting. Using two guide steel bars 11 as the sliding guide rail 1, and the sliding guide rail 1 is erected using several supporting steel bars 4, makes it easier to obtain materials and manufacture the auxiliary positioning device 10. Furthermore, the guide steel bar 11 can be integrated with the steel reinforcement skeleton of the irregular fair-faced concrete structure without disassembly; that is, the installation of the guide steel bar 11 can be considered as part of the preliminary work of steel bar binding, which is more efficient. Moreover, the support steel bar 4 and the sliding guide rail 1 can be used as components of the steel reinforcement skeleton of the irregular fair-faced concrete structure, so that the support steel bar 4 and the sliding guide rail 1 do not need to occupy additional land area in the construction area, which is convenient for adapting to the construction requirements in areas with limited or restricted construction space.

[0057] Using two guide steel bars 11 as the sliding guide rail 1, and the sliding guide rail 1 being erected using several supporting steel bars 4, makes it easier to obtain materials and manufacture the auxiliary positioning device 10. Furthermore, the guide steel bars 11 can be combined with the steel reinforcement skeleton of the irregular fair-faced concrete structure without disassembly; that is, the installation of the guide steel bars 11 can be considered as part of the preliminary work of steel reinforcement binding, which is more efficient. Example 2

[0058] Reference Figure 7 The difference between this embodiment and embodiment 1 is that the magnetic mounting base 2 in this embodiment is provided with an oblique laser irradiator 5. The oblique laser irradiator 5 is installed in an oblique state using bolts 31 and wedge-shaped washers 51, so that the optical path of the oblique laser irradiator 5 is set at an oblique angle and is located in the same vertical plane as the optical path of the laser irradiator 3.

[0059] In this embodiment, the optical paths of the oblique laser irradiator 5 and the laser irradiator 3 are in the same plane, so that the oblique laser irradiator 5 and the laser irradiator 3 can be used as references for the installation of vertical steel bars, making it easier to control the positional accuracy of the vertical steel bars; furthermore, the combination of the oblique laser irradiator 5 and the laser irradiator 3 can adapt to steel bars in curved or inclined states, which can improve the applicability of the auxiliary positioning device 10. Example 3

[0060] Reference Figure 8The difference between this embodiment and Embodiment 1 is that the magnetic mounting base 2 is provided with a driving structure 7, which includes a battery 71, a drive motor 72, and two rollers 73. Both the battery 71 and the drive motor 72 are fixedly mounted on the magnetic mounting base 2. The battery 71 is electrically connected to the drive motor 72, and a power switch 74 is provided between the circuits of the battery 71 and the drive motor 72. The drive motor 72 is a DC motor with a reducer, and the drive motor 72 is provided with a motor mount 721, which is fixedly connected to the magnetic mounting base 2. The rollers 73 are rotatably mounted on the magnetic mounting base 2. The mounting base 2 is provided with a roller groove 26 for accommodating the roller 73. The roller groove 26 is connected to the sliding guide groove 21. The output shaft of the drive motor 72 is coaxially fixedly connected to one of the rollers 73. The output shaft of the drive motor 72 is transmitted to the other roller 73 through a gear assembly 75. The drive motor 72 can drive the two rollers 73 to rotate in opposite directions. The installation positions of the two rollers 73 are horizontally offset from the position of the elastic abutment member 24. The outer circumferential surface of the roller 73 is provided with a rubber layer. The roller 73 abuts against the sliding guide rail 1. There is frictional damping between the surface of the roller 73 and the sliding guide rail 1.

[0061] When the drive motor 72 is energized, it can drive the roller 73 to rotate, causing the roller 73 to generate dynamic friction with the sliding guide rail 1, thereby driving the magnetic mounting base 2 to slide along the sliding guide rail 1. When the power switch 74 is de-energized, the magnetic mounting base 2 can also be moved manually.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A construction method for irregularly shaped fair-faced concrete structures, characterized in that, Includes the following steps: Grassroots cleanup; An auxiliary positioning device (10) is installed above the installation area of ​​the irregular fair-faced concrete structure; the auxiliary positioning device (10) includes a sliding guide rail (1), a magnetic mounting base (2), a marking tool (6), and a laser irradiator (3); when supporting the sliding guide rail (1), several supporting steel bars (4) for supporting the sliding guide rail (1) are pre-supported, and the several supporting steel bars (4) are equidistantly spaced along the extension path of the sliding guide rail (1), and the sliding guide rail (1) includes two guide steel bars arranged side by side. The magnetic mounting base (2) is simultaneously attracted to the two guide steel bars (11) of the sliding guide rail (1). The magnetic mounting base (2) is provided with two sliding guide grooves (21), which are respectively slidably connected to the two guide steel bars (11). The sliding guide rail (1) is ferromagnetic. The magnetic mounting base (2) is attracted to the sliding guide rail (1) by magnetic force and is slidably connected to the sliding guide rail (1) through the sliding guide grooves (21). The marking device (6) includes a walking base (61), which has marking graphite columns (62) and telescopic holes (611) for mounting the marking graphite columns (62). One end of the telescopic hole (611) is downward through, and a compression spring (63) is provided inside the telescopic hole (611). The compression spring (63) is located above the marking graphite columns (62) and is used to force the marking graphite columns (62) to abut against the base surface. The walking base (61) is provided with a plurality of vertical slide rods (64), which are vertically slidably connected to the magnetic mounting base (2). The vertical slide rods (64) can be installed at different positions on the magnetic mounting base (2). Using the magnetic mounting base (2) to slide on the sliding guide rail (1), the magnetic mounting base (2) drives the scribing device (6) to move along the surface of the base layer through the vertical slide rod (64), so that the scribing graphite column (62) of the scribing device (6) draws the positioning line of the template (20) and the trajectory line of the vertical reinforcement on the surface of the base layer. The laser irradiator (3) is detachably mounted on the magnetic mounting base (2). The laser irradiator (3) can be installed at different positions on the magnetic mounting base (2), so that the optical path of the laser irradiator (3) can be used to assist in the positioning of vertical steel bars and the positioning of the template (20). When tying the reinforcing bars, the laser irradiator (3) is moved gradually so that the optical path of the laser irradiator (3) serves as a position reference for the vertical reinforcing bars. During the setting up of template (20), the optical path of the laser irradiator (3) is used as a position reference for template (20).

2. The construction method for irregular-shaped fair-faced concrete structures according to claim 1, characterized in that: During the process of tying the reinforcing bars, each vertical reinforcing bar is tied to the two guide bars (11) of the sliding guide rail (1).

3. The construction method for irregular-shaped fair-faced concrete structures according to claim 1, characterized in that: The magnetic mounting base (2) is provided with a driving structure (7), which includes a battery (71), a drive motor (72) and a roller (73). The battery (71) and the drive motor (72) are both fixedly mounted on the magnetic mounting base (2). The battery (71) is electrically connected to the drive motor (72), and a power switch (74) is provided between the circuits of the battery (71) and the drive motor (72). The roller (73) is rotatably mounted on the magnetic mounting base (2), and the drive motor (72) is used to drive the roller (73) to rotate. The surface of the roller (73) abuts against the sliding guide rail (1), and there is frictional damping between the surface of the roller (73) and the sliding guide rail (1).

4. The construction method for irregular-shaped fair-faced concrete structures according to claim 1, characterized in that: The magnetic mounting base (2) is equipped with an oblique laser irradiator (5). The optical path of the oblique laser irradiator (5) is set at an angle and is located in the same vertical plane as the optical path of the laser irradiator (3).

5. The construction method for irregular-shaped fair-faced concrete structures according to claim 1, characterized in that: Each of the guide bars (11) is formed by connecting multiple segments of bars, and each segment of bars corresponds to a template (20).

6. The construction method for irregular-shaped fair-faced concrete structures according to claim 1, characterized in that: The width of the sliding guide groove (21) is greater than the diameter of the guide bar (11). The sliding guide groove (21) of the magnetic mounting base (2) is provided with an elastic abutment (24). The elastic abutment (24) can force the guide bar (11) to abut against the inner wall of one side of the sliding guide groove (21).

7. The construction method for irregular-shaped fair-faced concrete structures according to claim 1, characterized in that: Several vertical short rods (12) are welded together between the two guide bars (11). The vertical short rods (12) are distributed at intervals along the extension direction of the guide bars (11). The diameter of the vertical short rods (12) is smaller than the diameter of the guide bars (11).

8. The construction method for irregular-shaped fair-faced concrete structures according to claim 1, characterized in that: According to the different structures, templates (20) are divided into full-plane templates, full-curved templates and curved-straight transition templates. The curved-straight transition template includes curved surfaces and straight surfaces, among which the straight surfaces connect to the full-plane template.

9. The construction method for irregular-shaped fair-faced concrete structures according to claim 8, characterized in that: The outer side of the template (20) is provided with optical fiber structure (201) on both sides. The optical fiber structure (201) serves as the laser path of the laser irradiator (3). When installing the template, the optical path of the laser irradiator (3) passes through the optical fiber structure (201) to position the template (20).

10. The construction method for irregular-shaped fair-faced concrete structures according to claim 9, characterized in that: The template (20) is divided into upper and lower segments, and the optical fiber structure (201) on the template (20) is also divided into corresponding segments. The upper and lower adjacent segments of the optical fiber structure (201) are connected to each other.

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