Special-shaped bare concrete structure construction method

Abstract

The invention discloses a special-shaped bare concrete structure construction method which comprises the following steps: cleaning a base layer; an auxiliary positioning device is arranged above the mounting area of the special-shaped bare concrete structure; the auxiliary positioning device comprises a sliding guide rail, a magnetic attraction mounting seat scriber and a laser irradiator; the sliding guide rail has ferromagnetism, and the magnetic attraction installation base is attracted to the sliding guide rail through magnetic force and is in sliding connection with the sliding guide rail through the sliding guide groove. The scriber comprises a walking base, and the walking base is provided with a scribing graphite column; a plurality of vertical sliding rods are arranged on the walking base in an inserted mode, and the vertical sliding rods and the magnetic attraction mounting bases are in sliding connection in the vertical direction. The laser irradiator is detachably mounted on the magnetic mounting seat, so that a light path of the laser irradiator can be used for assisting in positioning the vertical reinforcing steel bar and the template. According to the method, the distance and the arrangement track between the vertical steel bars of the bare concrete structure can be more accurately controlled.

Description

Technical Field

[0001] The present application relates to the field of fair-faced concrete construction technology, and in particular to a construction method for special-shaped fair-faced concrete structures. Background Art

[0002] Fair-faced concrete with large, irregularly shaped surfaces is often used in large buildings. Fair-faced concrete must balance mechanical properties with decorative effects. Fair-faced concrete structures are particularly well-suited for the construction of cultural and tourism venues, highlighting the building's aesthetic appeal, making the building itself a part of the landscape and organically integrating with the surrounding landscape, thus embodying the pursuit of architectural beauty. The construction process for fair-faced concrete structures is similar to that of conventional concrete structures, but the requirements for the construction process are higher, with a long construction period and significant differences in time and space. These design requirements place high demands on concrete trial mixing, formwork installation, concrete pouring, quality control, and finished product protection.

[0003] Compared with conventional concrete structures, the steel bars in plain concrete structures are more densely arranged and more difficult to tie. Moreover, when tying steel bars in areas with special shapes such as arc surfaces, since the vertical steel bars of the special-shaped surface structure need to be arranged along a curved trajectory, the spacing between the vertical steel bars is difficult to calibrate using measuring tools such as rulers and compasses. This makes it more difficult to control the spacing between adjacent vertical steel bars and the arrangement trajectory of the vertical steel bars. Summary of the Invention

[0004] In order to more accurately control the spacing and arrangement trajectory between the vertical steel bars of the exposed concrete structure, the present application provides a construction method for a special-shaped exposed concrete structure.

[0005] The construction method of special-shaped plain concrete structure provided in this application adopts the following technical solutions: The construction method of special-shaped plain concrete structure comprises the following steps: cleaning the base layer; setting an auxiliary positioning device above the installation area of ​​the special-shaped plain concrete structure; the auxiliary positioning device comprises a sliding guide rail, a magnetic mounting seat scriber and a laser irradiator; when supporting the sliding guide rail, a plurality of supporting steel bars for erecting the sliding guide rail are pre-supported, and the plurality of supporting steel bars are arranged at equal intervals along the extension path of the sliding guide rail, the sliding guide rail comprises two guide steel bars arranged side by side up and down, the magnetic mounting seat is simultaneously adsorbed on the two guide steel bars of the sliding guide rail, the magnetic mounting seat is provided with two sliding guide grooves, and the two sliding guide grooves are respectively connected to the two guide steel bars in a sliding manner; the sliding guide rail has ferromagnetism, the magnetic mounting seat is adsorbed on the sliding guide rail by magnetic force, and is slidably connected to the sliding guide rail through the sliding guide groove; the scriber comprises a walking base, the walking base is provided with a marking graphite column, the walking base is provided with a telescopic hole for installing the marking graphite column, one end of the telescopic hole is passed through downward, A compression spring is provided in the telescopic hole, and the compression spring is located above the marking graphite column, and the compression spring is used to force the marking graphite column to abut the surface of the base layer; the walking base is plugged with a plurality of vertical sliding rods, and the vertical sliding rods are connected to the magnetic mounting seat along a vertical sliding connection; the vertical sliding rods can be installed at different positions of the magnetic mounting seat; the magnetic mounting seat is used to slide on the sliding guide rail, and the magnetic mounting seat drives the marking tool to move along the surface of the base layer through the vertical sliding rod, so that the marking graphite column of the marking tool draws the positioning line of the template and the trajectory line mark of the vertical steel bar on the surface of the base layer; the laser irradiator is detachably mounted on the magnetic mounting seat, and the laser irradiator can be installed at different positions of the magnetic mounting seat, so that the optical path of the laser irradiator can be used to assist in the positioning of the vertical steel bars and the positioning of the template; when tying the steel bars, the laser irradiator is gradually moved so that the optical path of the laser irradiator is used as a reference for the position of the vertical steel bars; when supporting the template, the optical path of the laser irradiator is used as a reference for the position of the template during the process of supporting the template.

[0006] By adopting the above technical solution, an auxiliary positioning device is set on the base layer. The magnetic mounting seat of the auxiliary positioning device can slide along the sliding guide rail. When the magnetic mounting seat slides, it can drive the scriber to move synchronously through the vertical slide rod. During the movement of the scriber, the marking graphite column can draw a track mark on the surface of the base layer to serve 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 magnetic mounting seat can be stably fixed in different positions by 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 tying and formwork support. Using two guide steel bars as sliding guide rails, the sliding guide rails are erected using several supporting steel bars, which can make the auxiliary positioning device more convenient to obtain materials and manufacture. In addition, the guide steel bars can be combined with the steel skeleton of the special-shaped plain concrete structure without disassembly; that is, the installation of the guide steel bars can be used as the preliminary part of the reinforcement tying, which is more efficient. Furthermore, the supporting steel bars and the sliding guide rails can be used as components of the steel skeleton of the special-shaped plain concrete structure, so that the supporting steel bars and the sliding guide rails do not need to occupy additional land area in the construction area, which is convenient for adapting to the construction requirements in small and restricted areas.

[0007] Optionally, during the process of tying the steel bars, each vertical steel bar is tied and connected to the two guide steel bars of the sliding guide rail.

[0008] By adopting the above technical solution, when tying the steel bars, each vertical steel bar is tied to the guide steel bar at the same time, so that the guide steel bar can be gradually reinforced, so that the laser illuminator can be more reliable when used as a reference for tying vertical steel bars and supporting formwork in the future.

[0009] Optionally, the magnetic mount is provided with a driving structure, which includes a battery, a driving motor and a roller. The battery and the driving motor are fixedly mounted on the magnetic mount, the battery is electrically connected to the driving motor, and a power switch is provided between the circuits of the battery and the driving motor. The roller is rotatably mounted on the magnetic mount, and the driving motor is used to drive the roller to rotate. The surface of the roller abuts the sliding guide rail, and there is friction damping between the surface of the roller and the sliding guide rail.

[0010] By adopting the above technical solution, the driving motor can drive the roller to rotate when powered on, so that dynamic friction is formed between the roller and the sliding guide rail, thereby driving the magnetic mounting seat to slide along the sliding guide rail, thereby indirectly driving the scriber to draw a track line on the base surface.

[0011] Optionally, the magnetic mounting base is provided with an oblique laser irradiator, the optical path of the oblique laser irradiator is arranged at an angle and is located in the same vertical plane as the optical path of the laser irradiator.

[0012] 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 the reference for the installation of vertical steel bars at the same time, which makes it easier to control the position accuracy of the vertical steel bars; furthermore, the combination of the oblique laser irradiator and the laser irradiator can adapt to steel bars in curved or inclined states, which can improve the scope of application of the auxiliary positioning device.

[0013] Optionally, each of the guide steel bars is formed by connecting multiple sections of segmented steel bars in series, and each section of the segmented steel bars corresponds to a template.

[0014] By adopting the above technical solution, the guide steel bars are connected in series using multiple sections of steel bars, making the guide steel bars easier to manufacture and install.

[0015] Optionally, the width of the sliding guide groove is greater than the diameter of the guide steel bar, and an elastic abutment is provided in the sliding guide groove of the magnetic mounting seat, and the elastic abutment can force the guide steel bar to press against the inner wall of one side of the sliding guide groove.

[0016] By adopting the above technical solution, the elastic abutment forces the guide steel bar to press against the inner wall of one side of the sliding guide groove, so that the extension direction of the sliding guide groove can be consistent with the extension direction of the guide steel bar, which is beneficial to ensure the position accuracy of the magnetic mounting seat on the sliding guide rail.

[0017] Optionally, a plurality of short vertical rods are welded between the two guide steel bars, and the plurality of short vertical rods are distributed at intervals along the extension direction of the guide steel bars, and the rod diameter of the short vertical rods is smaller than the diameter of the guide steel bars.

[0018] By adopting the above technical solution, the two guide steel bars are connected by using a vertical short rod, so that the two guide steel bars are connected into a whole, and the distance between the two guide steel bars is kept stable.

[0019] Optionally, the template is divided into a full-plane template, a full-curved template and a straight-curved transition template according to different structures. The straight-curved transition template includes a curved surface and a straight surface, wherein the straight surface connects to the full-plane template.

[0020] By adopting the above technical solution, the straight surface portion of the curved-straight transition formwork is connected and installed with the full-plane formwork through the straight surface portion, making it easier to connect and align the curved-straight transition formwork and the full-plane formwork, which is beneficial to controlling the joints between the formworks, thereby reducing the situation of water pouring.

[0021] Optionally, optical fiber structures are provided on both side edges of the outer side of the template, and the optical fiber structures serve as laser paths for the laser illuminator; when installing the template, the light path of the laser illuminator passes through the optical fiber structure to position the template.

[0022] By adopting the above technical solution, when supporting the template, the position accuracy of the template can be judged by observing whether the laser passes through the optical fiber structure, which is conducive to improving the installation accuracy of the template.

[0023] Optionally, the template is divided into upper and lower sections, the optical fiber structure on the template is divided into corresponding sections, and the upper and lower adjacent sections of the optical fiber structure are connected to each other.

[0024] By adopting the above technical solution, when the template needs to be divided into multiple sections along the height direction, the connection and alignment between the upper and lower sections of the template can be judged by observing whether the laser passes through each section of the optical fiber structure at the same time.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 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. As the magnetic mounting base slides, it can drive the scriber to move synchronously via the vertical slide rod. During the movement of the scriber, the marking graphite column can draw a track mark on the surface of the base layer, which serves as a positioning reference for vertical rebar or formwork support. Furthermore, during the process of tying and supporting vertical rebar and supporting formwork, the optical path of the laser illuminator can continue to serve as a position reference, which is conducive to improving the accuracy of rebar tying and formwork support.

[0026] 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 the reference for the installation of vertical steel bars at the same time, which makes it easier to control the position accuracy of the vertical steel bars; furthermore, the combination of the oblique laser irradiator and the laser irradiator can adapt to steel bars in curved or inclined states, which can improve the scope of application of the auxiliary positioning device.

[0027] When supporting the template, by observing whether the laser passes through the optical fiber structure, the position accuracy of the template can be judged, which is beneficial to improving the installation accuracy of the template. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flow chart of the special-shaped plain concrete structure construction method in Example 1.

[0029] Figure 2 Schematic diagram of the installation state of the auxiliary positioning device of Example 1.

[0030] Figure 3 yes Figure 2 Magnified view of point A in the middle.

[0031] Figure 4 This is a schematic diagram of the installation status of the magnetic mount and the laser irradiator in Example 1.

[0032] Figure 5 This is a cross-sectional view of the structure of the scriber in Example 1.

[0033] Figure 6 This is a schematic diagram of the installation position of the optical fiber structure in Example 1.

[0034] Figure 7 This is a schematic diagram of the installation status of the magnetic mount and the oblique laser irradiator in Example 2.

[0035] Figure 8 This is a schematic diagram of the installation status of the magnetic mount and the oblique laser irradiator in Example 3.

[0036] Description of reference numerals: 10. Auxiliary positioning device; 1. Sliding guide rail; 11. Guide steel bar; 12. Vertical short rod; 2. Magnetic mounting seat; 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 illuminator; 31. Bolt; 4. Support steel bar; 5. Oblique laser illuminator; 51. Wedge-shaped gasket; 6. Scriber; 61. Walking base; 611. Telescopic hole; 612. Socket; 62. Scribing graphite column; 63. Compression spring; 631. Plug sleeve; 64. Vertical sliding rod; 65. Set screw; 7. Driving structure; 71. Battery; 72. Driving motor; 721. Motor seat; 73. Roller; 74. Power switch; 75. Gear assembly; 20. Template; 201. Optical fiber structure. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-8 This application is described in further detail. Example 1

[0038] The present application discloses a method for constructing a special-shaped plain concrete structure. Figure 1 The construction method of special-shaped plain concrete structure includes the following steps: Step 1: Clean the base layer and remove loose soil and debris on the base layer; Step 2: Install an auxiliary positioning device 10 above the installation area of ​​the special-shaped plain concrete structure; the auxiliary positioning device 10 includes a sliding guide rail 1, a magnetic mounting base 2, a scriber 6, and a laser irradiator 3; the sliding guide rail 1 is supported above the installation area of ​​the special-shaped plain concrete structure; Reference Figure 2The sliding guide rail 1 includes two guide bars 11 arranged side by side in an upper and lower direction, with spacing marks pre-set on the guide bars 11. Each guide bar 11 is formed by connecting multiple sections of steel bars in series. The joints of the two sections are welded together. Each section of steel bar corresponds to a template 20. A plurality of vertical short rods 12 are welded between the two guide bars 11. The vertical short rods 12 are steel parts and are spaced apart along the extension direction of the guide bars 11. The rod diameter of the vertical short rods 12 is smaller than the diameter of the guide bars 11. When supporting the sliding guide rail 1, a plurality of supporting steel bars 4 are pre-installed in the installation area of ​​the special-shaped plain concrete structure. The supporting steel bars 4 are arranged vertically and are evenly 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. Reference Figure 3 and Figure 4 , the magnetic mounting base 2 is simultaneously adsorbed on the two guide steel bars 11 of the sliding guide rail 1, and the magnetic mounting base 2 is arranged on the side of the guide steel bar 11 away from the supporting steel bar 4. The main 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, and the two sliding guide grooves 21 are respectively slidably connected to the two guide steel bars 11; two magnets 22 are embedded on the side of the magnetic mounting base 2 away from the sliding guide groove 21, and the two magnets 22 correspond to the two sliding guide grooves 21 respectively. A through hole 23 is opened on the inner wall of the sliding guide groove 21 away from the slot, and the through hole 23 is connected to the installation space of the magnet 22; The width of the sliding guide groove 21 is greater than the diameter of the guide steel bar 11. An elastic abutment 24 is provided in the sliding guide groove 21 of the magnetic mount 2. 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, one end of which is inserted into the side wall of the sliding guide groove 21, and the other end of the spring extends in a direction close to the magnet 22. Reference Figure 5The marking device 6 includes a walking base 61, the walking base 61 is provided with walking wheels, the walking base 61 is provided with a marking graphite column 62, the walking base 61 is provided with a telescopic hole 611 for installing the marking graphite column 62, the upper and lower ends of the telescopic hole 611 are through-set, the upper end of the telescopic hole 611 is provided with an internal thread, the walking base 61 is installed with a set screw 65 through the internal thread, the set screw 65 is welded and fixed with a compression spring 63, the compression spring 63 is located in the telescopic hole 611, the compression spring 63 is located above the marking graphite column 62, the end of the compression spring 63 away from the set screw 65 is welded with a plug sleeve 631, the upper end of the graphite column is plugged into the plug sleeve 631, and the compression spring 63 is used to force the marking graphite column The column 62 abuts against the surface of the base layer; the walking base 61 is plugged with two vertical sliding rods 64 (the number of vertical sliding rods can be set to four or more as needed), and the walking base 61 is provided with a socket 612 adapted to the vertical sliding rod 64. The lower end of the socket 612 is closed, and the upper end is through. The vertical sliding rod 64 is connected to the magnetic mounting base 2 along the vertical sliding connection, and the magnetic mounting base 2 is provided with a sliding hole 27 for the vertical sliding rod 64 to pass through and connect. The edge of the opening of the sliding hole 27 is fixedly connected to the guide tube 28; there are multiple groups of sliding holes 27, and each group of sliding holes 27 is provided with two. The two vertical sliding rods 64 cooperate with the sliding holes 27 of different groups to achieve installation at different positions of the magnetic mounting base 2; The magnetic mounting base 2 slides on the sliding guide rail 1, and the magnetic mounting base 2 drives the scriber 6 to move along the surface of the base layer through the vertical sliding rod 64, so that the marking graphite column 62 of the scriber 6 draws the positioning line of the template 20 and the trajectory line mark of the vertical steel bar on the surface of the base layer.

[0039] Reference Figure 4 The laser irradiator 3 is detachably mounted on the magnetic mounting base 2 by means of a bolt 31. The laser irradiator 3 is adsorbed on the sliding guide rail 1 through the magnetic mounting base 2 and is slidably connected to the sliding guide rail 1. The magnetic mounting base 2 is provided with a plurality of mounting positions, and different mounting positions correspond to different bolt holes 25. The laser irradiator 3 can be mounted at different positions of the magnetic mounting base 2. When the laser irradiator 3 is mounted at different mounting positions and slides along the guide rail, the optical path of the laser irradiator 3 can draw different trajectory lines on the base layer, so that the optical path of the laser irradiator 3 can be used for positioning and laying out the template 20 and for positioning and laying out the vertical steel bars. Step 3, using the light path of the laser irradiator 3 to mark the positioning line of the template 20 and the trajectory line of the vertical steel bar on the base; Step 4, tying the steel bars; when tying the vertical steel bars, gradually move the laser irradiator 3 so that the optical path of the laser irradiator 3 serves as a reference for the position of the vertical steel bars; in the process of tying the steel bars, tie and connect each vertical steel bar with the two guide steel bars 11 of the sliding guide rail 1; Step 5, support the template 20. During the process of supporting the template 20, change the installation position of the laser irradiator 3 on the magnetic mounting base 2 so that the optical path of the laser irradiator 3 is used as a position reference for the template 20. During this process, the optical path of the laser irradiator 3 is used to calibrate the outer surface of the template 20; the template 20 is fixed using tension bolts 31, steel pipes and steel sections.

[0040] Reference Figure 6 The template 20 is divided into a full-plane template, a full-curved template and a straight-curved transition template according to different structures. The straight-curved transition template includes a curved portion and a straight portion, wherein the straight portion connects to the full-plane template 20. The edges on both sides of the outer side of the template 20 are fixed with optical fiber structures 201 by bonding. The optical fiber structure 201 is parallel to the edge of the outer side of the template 20. The material of the optical fiber structure 201 can be glass or plastic. The diameter of the optical fiber structure is between 2-3 mm. The optical fiber structure 201 serves as the laser path of the laser illuminator 3. When supporting the template, the light path of the laser illuminator 3 is made to pass through the optical fiber structure. By observing the situation where the laser light path passes through the optical fiber structure 201, the position accuracy of the template 20 can be judged to improve the installation accuracy of the template 20.

[0041] Furthermore, the template 20 is divided into upper and lower sections, and the optical fiber structure 201 on the template 20 is divided into corresponding sections, and the upper and lower adjacent sections of the optical fiber structure 201 are connected to each other. The connection and alignment between the upper and lower sections of the template 20 can be determined by observing whether the laser passes through each section of the optical fiber structure 201 at the same time.

[0042] The implementation principle of the special-shaped plain concrete structure construction method of the embodiment of the present application is as follows: an auxiliary positioning device 10 is set on the base layer, and the magnetic mounting seat 2 of the auxiliary positioning device 10 can slide along the sliding guide rail 1. When the magnetic mounting seat 2 slides, it can drive the scriber 6 to move synchronously through the vertical slide rod 64. During the movement of the scriber 6, the marking graphite column 62 can draw a track mark on the surface of the base layer to serve as a positioning reference for the vertical reinforcement or formwork 20. Furthermore, in the process of tying and supporting the vertical reinforcement and supporting the formwork 20, the magnetic mounting seat 2 can stably stay in different positions through the magnetic effect, so that the optical path of the laser irradiator 3 can continue to play the role of position reference, which is conducive to improving the accuracy of reinforcement tying and formwork 20 support. Using two guide steel bars 11 as the sliding guide rail 1, the sliding guide rail 1 is erected using a number of supporting steel bars 4, which can make the auxiliary positioning device 10 more convenient to obtain materials and manufacture. Furthermore, the guide bars 11 can be integrated with the steel frame of the irregular-shaped exposed concrete structure without requiring disassembly; that is, the installation of the guide bars 11 can be performed as a preliminary step in the steel bar tying process, which is more efficient. Furthermore, the support bars 4 and the sliding guide rail 1 can be integrated into the steel frame of the irregular-shaped exposed concrete structure, eliminating the need for additional land within the construction area, making them suitable for construction in confined and narrow areas.

[0043] Using two guide bars 11 as the sliding guide rail 1, which is erected using several support bars 4, makes the auxiliary positioning device 10 easier to source and manufacture. Furthermore, the guide bars 11 can be integrated with the steel framework of the irregularly shaped exposed concrete structure without requiring disassembly; thus, installation of the guide bars 11 can be performed as a preliminary step in the rebar tying process, resulting in a more efficient installation. Example 2

[0044] Reference Figure 7 The difference between this embodiment and embodiment 1 is that in this embodiment, the magnetic mounting base 2 is provided with an oblique laser irradiator 5, and the oblique laser irradiator 5 is installed in an inclined state using bolts 31 and wedge-shaped gaskets 51, so that the optical path of the oblique laser irradiator 5 is inclined and is located in the same vertical plane as the optical path of the laser irradiator 3.

[0045] 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 simultaneously serve as the reference when installing the vertical steel bars, which makes it easier to control the position 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 scope of application of the auxiliary positioning device 10. Example 3

[0046] Reference Figure 8, the difference between this embodiment and embodiment 1 is that: the magnetic mounting base 2 is provided with a driving structure 7, the driving structure 7 includes a battery 71, a driving motor 72 and two rollers 73, the battery 71 and the driving motor 72 are fixedly mounted on the magnetic mounting base 2, the battery 71 is electrically connected to the driving motor 72, a power switch 74 is provided between the circuit of the battery 71 and the driving motor 72, the driving motor 72 is a DC motor with a reducer, the driving motor 72 is provided with a motor base 721, and the motor base 721 is fixedly connected to the magnetic mounting base 2; the rollers 73 are rotatably mounted on the magnetic mounting base 2, and the magnetic mounting base The mounting seat 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 and the other roller 73 are transmitted 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 staggered in the horizontal direction from the position of the elastic abutment 24. The outer peripheral surface of the roller 73 is provided with a rubber layer. The roller 73 abuts the sliding guide rail 1. There is friction damping between the surface of the roller 73 and the sliding guide rail 1.

[0047] When the driving motor 72 is powered on, it can drive the roller 73 to rotate, so that the roller 73 forms 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 powered off, the magnetic mounting base 2 can also be moved manually.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A construction method for a special-shaped plain concrete structure, characterized in that: The steps include: Grassroots cleaning; An auxiliary positioning device (10) is provided above the installation area of ​​the special-shaped plain concrete structure; the auxiliary positioning device (10) comprises a sliding guide rail (1), a magnetic mounting seat (2), a scriber (6) and a laser irradiator (3); when the sliding guide rail (1) is supported, a plurality of supporting steel bars (4) for supporting the sliding guide rail (1) are pre-supported, the plurality of supporting steel bars (4) being arranged at equal intervals along the extension path of the sliding guide rail (1), and the sliding guide rail (1) comprises two guide steel bars arranged side by side in an upper and lower direction. (11), the magnetic mounting seat (2) is simultaneously adsorbed on the two guide steel bars (11) of the sliding guide rail (1), the magnetic mounting seat (2) is provided with two sliding guide grooves (21), and the two sliding guide grooves (21) are respectively connected to the two guide steel bars (11) in a sliding manner; the sliding guide rail (1) has ferromagnetism, the magnetic mounting seat (2) is adsorbed on the sliding guide rail (1) by magnetic force, and is connected to the sliding guide rail (1) in a sliding manner through the sliding guide grooves (21); The marking device (6) includes a walking base (61), the walking base (61) is provided with a marking graphite column (62), the walking base (61) is provided with a telescopic hole (611) for installing the marking graphite column (62), one end of the telescopic hole (611) is downwardly connected, and a compression spring (63) is provided in the telescopic hole (611), the compression spring (63) is located above the marking graphite column (62), and the compression spring (63) is used to force the marking graphite column (62) to abut against the surface of the base layer; the walking base (61) is provided with a plurality of vertical sliding rods (64), and the vertical sliding rods (64) are connected to the magnetic mounting seat (2) along a vertical sliding direction; the vertical sliding rods (64) can be installed at different positions of the magnetic mounting seat (2); The magnetic mounting base (2) is used to slide on the sliding guide rail (1), and the magnetic mounting base (2) drives the scriber (6) to move along the surface of the base through the vertical slide rod (64), so that the marking graphite column (62) of the scriber (6) draws the positioning line of the template (20) and the track line mark of the vertical steel bar on the surface of the base; The laser irradiator (3) is detachably mounted on the magnetic mounting base (2), and the laser irradiator (3) can be mounted at different positions of the magnetic mounting base (2), so that the optical path of the laser irradiator (3) can be used to assist in positioning the vertical steel bars and the template (20); When tying the steel bars, especially the vertical steel bars, the laser irradiator (3) is gradually moved so that the light path of the laser irradiator (3) serves as a reference for the position of the vertical steel bars; The template (20) is supported. During the process of supporting the template (20), the optical path of the laser irradiator (3) is used as a position reference for the template (20).

2. The construction method of special-shaped plain concrete structure according to claim 1, characterized in that: During the process of tying the steel bars, each vertical steel bar is tied and connected to the two guide steel bars (11) of the sliding guide rail (1).

3. The construction method of special-shaped plain concrete structure according to claim 1, characterized in that: The magnetic mounting seat (2) is provided with a driving structure (7), the driving structure (7) comprising a battery (71), a driving motor (72) and a roller (73), the battery (71) and the driving motor (72) being fixedly mounted on the magnetic mounting seat (2), the battery (71) being electrically connected to the driving motor (72), and a power switch (74) being provided between the circuits of the battery (71) and the driving motor (72); the roller (73) being rotatably mounted on the magnetic mounting seat (2), the driving motor (72) being used to drive the roller (73) to rotate, the surface of the roller (73) being in contact with the sliding guide rail (1), and friction damping being provided between the surface of the roller (73) and the sliding guide rail (1).

4. The construction method of special-shaped plain concrete structure according to claim 1, characterized in that: The magnetic mounting seat (2) is provided with an oblique laser irradiator (5), the optical path of the oblique laser irradiator (5) is arranged obliquely, and is located in the same vertical plane as the optical path of the laser irradiator (3).

5. The construction method of special-shaped plain concrete structure according to claim 1, characterized in that: Each of the guide steel bars (11) is formed by connecting a plurality of segmented steel bars in series, and each segmented steel bar corresponds to a template (20).

6. The construction method of special-shaped plain concrete structure according to claim 1, characterized in that: The width of the sliding guide groove (21) is greater than the diameter of the guide steel bar (11), and an elastic abutment member (24) is provided in the sliding guide groove (21) of the magnetic mounting seat (2), and the elastic abutment member (24) can force the guide steel bar (11) to press against the inner wall of one side of the sliding guide groove (21).

7. The construction method of special-shaped plain concrete structure according to claim 1, characterized in that: A plurality of vertical short rods (12) are welded between the two guide steel bars (11). The plurality of vertical short rods (12) are spaced apart along the extension direction of the guide steel bars (11). The rod diameter of the vertical short rods (12) is smaller than the diameter of the guide steel bars (11).

8. The construction method of special-shaped plain concrete structure according to claim 1, characterized in that: The template (20) is divided into a full-plane template, a full-curved template and a straight-curved transition template according to different structures. The straight-curved transition template includes a curved surface and a straight surface, wherein the straight surface connects to the full-plane template (20).

9. The construction method of special-shaped plain concrete structure according to claim 8, characterized in that: Optical fiber structures (201) are respectively provided on both side edges of the outer side surface of the template (20), and the optical fiber structures (201) serve as laser paths for the laser irradiator (3); when the template is installed, the optical path of the laser irradiator (3) passes through the optical fiber structure (201) to position the template (20).

10. The construction method of special-shaped plain concrete structure according to claim 9, characterized in that: The template (20) is arranged in upper and lower sections, the optical fiber structure (201) on the template (20) is arranged in corresponding sections, and the upper and lower adjacent sections of the optical fiber structure (201) are connected to each other.

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