A Measuring, Positioning and Installation Method for Ultra-Long Arc Aluminum Plates

Abstract

The present invention discloses a method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate. The installation steps include ceiling detailed design, reserved control points, construction of the roof steel structure, review of control points, modeling of the roof steel structure, model rehearsal, installation of the keel pipe hoop assembly, installation of the keel pipe, installation of the ceiling hanging assembly, and installation of the ceiling board. The longitudinal position of the ceiling board is controlled by using a starting positioning temporary bracket, the transverse position of the ceiling board is controlled by using the ceiling board edge installation control line formed by the laser level ray, and the chord height direction position of the ceiling board is measured by using a tape measure. The three controls are used to position and temporarily fix the ceiling board, and then the total station measurement is carried out by using the Leica reflector to precisely adjust the attitude of the ceiling board. The present invention realizes the installation of the ceiling strip board in the hollow-out design of the ceiling board. The ceiling strip board adopts positioning and precise attitude adjustment, and then the precise adjustment of the ceiling board attitude, taking into account the spatial installation position accuracy of the ceiling board and the final forming visual effect of the hyperbolic ceiling.

Description

Technical Field

[0001] The present invention belongs to the field of interior decoration construction, and particularly relates to a method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate. Background Art

[0002] In order to pursue a unique visual effect, more and more designers adopt a hyperbolic ceiling shape when decorating the interior ceiling of a building. However, in actual construction of a hyperbolic-shaped ceiling, there are inconveniences both in terms of processing difficulty and installation method. Existing hyperbolic-shaped ceilings are generally designed as multiple ceiling panels for segmented splicing. Since each hyperbolic arc-shaped panel to be spliced is in an irregular form, it is necessary to design the positioning and installation method for each hyperbolic arc-shaped panel specifically to improve the installation accuracy.

[0003] To solve this problem, existing designers design the interior ceiling panel in a hollowed-out style, that is, the hyperbolic-shaped ceiling is formed by a group of single-curved arc-shaped aluminum strips with variable cross-sections, arranged at equal intervals. Each single-curved arc-shaped aluminum strip uses folding instead of curving and is spliced in multiple segments, so that the single-curved aluminum strip and the plate seams together form a hyperbolic shape. The design of the single-curved arc-shaped aluminum strip simplifies the construction difficulties such as the irregularity and complex curvature of the hollowed-out aluminum plate of the hyperbolic ceiling into the processing and positioning of a group of strips.

[0004] However, the following problems still exist in actual construction of this design:

[0005] First, the single-curved arc-shaped aluminum strip design adopts the method of equal seams but unequal plates, that is, the width of the plate seams between the strips remains unchanged, and the entire hyperbolic surface change is mainly adjusted by the width of the strips. It is still cumbersome to position and install based on the spatial position of a single strip.

[0006] Second, the length of a single strip reaches 4m - 6m. In the design, folding instead of curving is used for strip segments, and the splicing of strip segments increases the measurement points by double. If it is divided into four segments, the measurement points on a single strip increase to eight, and there are many measurement points.

[0007] Third, the hyperbolic-shaped ceiling has high requirements for the visual effect. However, due to the existence of plate seams between the strips, the installation positioning between adjacent strips cannot be mutually verified and checked, and the installation accuracy cannot be guaranteed. Even a small deviation between adjacent single plates may affect the visual effect. Summary of the Invention

[0008] The purpose of the present invention is to provide a method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate, and solve the technical problems of cumbersome construction, many measurement points, and inability to guarantee the installation accuracy existing in the existing processing and positioning of the hollowed-out style of the existing ceiling panel.

[0009] To achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A method for measuring, positioning and installing ultra-long arc-shaped aluminum plates, and the installation steps are as follows:

[0011] Step 1, ceiling detailed design: Establish a ceiling model of a hyperbolic-shaped ceiling in BIM according to the design. In the ceiling model, design the hyperbolic-shaped ceiling into a group of ceiling plates with a single-curved arc protruding outward vertically. Determine the number and size of the ceiling plates and the size of the plate joints. The width of each ceiling plate is the same, and the plate joints between adjacent ceiling plates are of variable width;

[0012] Step 2, design instrument control stations: According to the size of the roof steel structure, design the positions of each instrument control station on the ground;

[0013] Step 3, construct the roof steel structure;

[0014] Step 4, model the roof steel structure;

[0015] Step 5, after data fitting of the ceiling model in Step 1 and the roof steel structure model in Step 4, preview the installation process of the ceiling model on the roof steel structure model,

[0016] so as to determine the size, quantity and spatial positions of each keel pipe, keel pipe hoop assembly, ceiling hanging assembly, the spatial position of the ceiling plate, and the installation points of each component. Among them, fine-tuning measurement points need to be pre-marked at the corresponding positions of the installation points of the ceiling plate;

[0017] Step 6, process each keel pipe, keel pipe hoop assembly, ceiling hanging assembly and ceiling plate according to the results obtained from the data fitting in Step 5;

[0018] Step 7, install the keel pipe hoop assembly, and install the keel pipe hoop assembly on the roof steel structure by means of hoop;

[0019] Step 8, install the keel pipe, and connect and fix the keel pipe to the keel pipe hoop assembly;

[0020] Step 9, install the ceiling hanging assembly: Install the ceiling hanging assembly on the keel pipe by hanging;

[0021] Step 10, install the ceiling plate:

[0022] Step a, lay out the plane position of a ceiling plate to be installed in the ceiling model on the ground to form a horizontal projection control line;

[0023] Step b, starting from the horizontal projection control line, use the vertical line function of the laser level to project the two side lines of the ceiling plate directly upward to form two ceiling plate edge installation control lines;

[0024] Step c, paste the Leica reflector on the fine-tuning measurement points of each ceiling plate pre-marked in Step 5;

[0025] Step d, install the starting positioning temporary bracket: Erect the starting positioning temporary bracket, which is detachably connected to the roof steel structure. Use a level to control the top elevation of the starting positioning temporary bracket to be the bottom elevation of the ceiling board, and control the error of the top elevation of the starting positioning temporary bracket within ±1 mm.

[0026] Step e, control the installation positions of each ceiling board as follows:

[0027] Control the longitudinal position of the ceiling board: Place the bottom surface of the ceiling board on the top surface of the starting positioning temporary bracket.

[0028] Control the transverse position of the ceiling board: Adjust the ceiling board so that the two side edges of the ceiling board respectively fit and align with the two installation control lines of the ceiling board edges.

[0029] Control the chord height direction position of the ceiling board: Extract the designed distance data between the keel pipe and the ceiling board in the model, and then measure on-site with a tape measure and adjust the actual distance between the two to the designed distance.

[0030] Perform the three controls to position the ceiling board and temporarily fix the ceiling board to the ceiling hanging components.

[0031] Step f, use a total station to measure with Leica reflectors to precisely adjust the attitude of the ceiling board.

[0032] Step g, repeat steps a to f until all ceiling boards are constructed.

[0033] Each ceiling board is segmented with a fold instead of a curve along the board direction, and the whole forms four ceiling board segments from bottom to top, namely the first board segment, the second board segment, the third board segment, and the fourth board segment. During construction, it is constructed layer by layer. After all the first board segments are constructed, the second board segments are constructed, and so on until all are constructed.

[0034] In step ten, the steps for installing the first board segment are as follows:

[0035] Step e, control the installation position of the first board segment:

[0036] Control the longitudinal position of the ceiling board: Place the bottom surface of the first board segment on the top surface of the starting positioning temporary bracket.

[0037] Control the transverse position of the ceiling board: Adjust the first board segment so that the two side edges of the ceiling board respectively fit and align with the two installation control lines of the ceiling board edges.

[0038] Control the chord height direction position of the ceiling board: Extract the designed distance data between the keel pipe and the first board segment in the model, and then measure on-site with a tape measure and adjust the actual distance between the two to the designed distance.

[0039] Three controls are used to position the ceiling board and temporarily fix the first board section to the ceiling hanging component.

[0040] Step f, then use a total station with a Leica reflector to accurately adjust the attitude of the first board section.

[0041] Step g, repeat steps a to f until the construction of the first board section of all columns is completed.

[0042] In step ten, the installation steps of the second board section, the third board section, and the fourth board section are as follows:

[0043] Step e, control the installation position of the second board section:

[0044] Control the longitudinal position of the ceiling board: Control it based on the accurately adjusted position of the corresponding previous board section, that is, control the second board section based on the accurately adjusted position of the first board section, that is, control the third board section based on the accurately adjusted position of the second board section, that is, control the fourth board section based on the accurately adjusted position of the third board section;

[0045] Control the lateral position of the ceiling board: All are the same as the method of the first board section;

[0046] Control the position in the chord height direction of the ceiling board: All are the same as the method of the first board section;

[0047] Three controls are used to position the ceiling board and temporarily fix the second board section, the third board section, and the fourth board section to the ceiling hanging component respectively.

[0048] Step f, then use a total station with a Leica reflector to accurately adjust the attitudes of the second board section, the third board section, and the fourth board section.

[0049] Step g, repeat steps a to f until the construction of all the second board sections, the third board sections, and the fourth board sections is completed.

[0050] In step three, design and mark each structural control point on the roof steel structure, and at the same time obtain the coordinates of each structural control point; use a total station to recheck the positions of each structural control point to meet the installation accuracy requirements;

[0051] In step four, before modeling and scanning, stick target papers on each structural control point of the roof steel structure, then set up the scanner at a clear view position on the ground to perform an overall three-dimensional scan of the roof steel structure. After scanning, generate a point cloud model in BIM. When splicing the point cloud models, input the coordinates of each structural control point into the point cloud model to obtain the coordinates of other points in the point cloud model relative to the structural control points, and complete the modeling of the roof steel structure model.

[0052] In Step 4, the distance between scanner stations is 5 m. When the scanner scans, target balls are used, and the number of target balls is 4. When placing the target balls, avoid arranging them in a straight line.

[0053] In Step 5, the installation points of each component include:

[0054] Determine the hoop installation points on the roof steel structure that are connected to the keel pipe hoop assembly;

[0055] Determine the hanging installation points on the keel pipe that are connected to the ceiling hanging assembly;

[0056] Determine the ceiling installation points on the ceiling board that are connected to the ceiling hanging assembly. The fine-tuning measurement points are pre-marked at the corresponding positions of the ceiling installation points.

[0057] In Step 7, the specific method for installing the keel pipe hoop assembly is as follows: Set up the total station on the total station station designed in Step 2. After setting up the station and orienting, carry out lofting according to the hoop installation points in Step 5. Use a Leica reflector for the forward sight to carry out the lofting of the keel pipe hoop assembly. After lofting is completed, make marks, and then install the keel pipe hoop assembly on the roof steel structure by means of hoop installation;

[0058] In Step 9, the specific method for installing the ceiling hanging assembly is as follows: Set up the total station on the total station station. After setting up the station and orienting, carry out lofting according to the hanging installation points in Step 6. Use a Leica reflector for the forward sight to carry out the lofting of the hanging installation points. After lofting is completed, make marks, and then install the ceiling hanging assembly on the keel pipe by means of hanging installation;

[0059] In Step 10, during the construction of each layer of ceiling board segments, every five columns of ceiling board segments on each layer are precisely positioned by the total station once. A detection straightedge is used between the five columns of ceiling boards to control the surface curvature and installation position.

[0060] In Step 10, before measuring with the level, first check whether the i-angle error of the instrument is within the allowable range.

[0061] When setting the leveling points of the level, use L-shaped settlement observation nails embedded in the roof steel structure as the backsight points to reduce the error when setting up the leveling staff.

[0062] When measuring with the level, the number of backsight observation points is not less than [number], to prevent accidental errors caused by incorrect positions during reading or setting up the leveling staff. A spirit level is set on the leveling staff to ensure that the leveling staff is in the plumb state during measurement.

[0063] The roof steel structure includes a group of structural main beams that are vertically single-curved and convex outward and are arranged at intervals.

[0064] The keel pipe includes a group of connecting pipes that span the entire roof steel structure, are closely attached to the structural main beams and are arranged at intervals. The connecting pipes are horizontally single-curved and convex outward.

[0065] The installation points of the hoop are set on the main structure beam. The top of the keel pipe hoop assembly is fixedly connected to the main structure beam corresponding to the hoop installation points, and the bottom of the keel pipe hoop assembly is fixedly connected to the keel pipe hoop.

[0066] The hanging installation points are set on the keel pipe. The top of the ceiling hanging assembly is adjustably or fixedly connected to the keel pipe corresponding to the hanging installation points. The ceiling installation points are set on the ceiling board, and the bottom of the ceiling hanging assembly is adjustably or fixedly connected to the ceiling board corresponding to the ceiling installation points.

[0067] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0068] First, compared with the existing design of equal joints but unequal plates, the present invention adopts the method of "equal plates but unequal joints". The width of the ceiling board is a fixed value. By controlling the attitude of a single ceiling board, single-curve adjustment of the hyperboloid is performed. There is no tolerance in the length direction of most boards, and the tolerance in the short side direction can be ignored. Only the jointing method has changed, and there is no obvious difference in the visual effect.

[0069] Second, simplify the structure of the connecting piece. Designing the keel pipe hoop assembly and the ceiling hanging assembly can realize the connection between the ceiling board and the steel structure main beam, reducing the measurement and positioning workload before installing the ceiling board.

[0070] Third, after the board widths of the ceiling boards are designed to be the same, the horizontal position of the ceiling board can be projected and lofted onto the ground according to the BIM model first, and then a laser level is clamped. The laser line emitted by it is used to control and guide the installation of the edge position of the ceiling board, controlling the horizontal position of the ceiling board, and further simplifying the horizontal positioning.

[0071] Fourth, after the board widths of the ceiling boards are designed to be the same, the horizontal positioning is edge control, and the longitudinal elevation of each ceiling board segment can be controlled by the longitudinal elevation of the previous segment. Therefore, a temporary bracket is designed specifically.

[0072] The first board segment is the benchmark for the starting position of each row of strip boards. The installation accuracy of the first board segment directly determines the installation quality of this row of strip boards. In order to ensure the accurate starting position and convenient installation of each row of strip boards, a horizontal bracket is set before installing the aluminum plate. The elevation of the bracket is controlled by a level, and the elevation error of the bracket is controlled within ±1mm. The elevation of the first board segment of the ceiling board is lofted onto the temporary bracket to stabilize the elevation of the first board segment and control the longitudinal position of the ceiling board.

[0073] Fifth, read the chord height data in the already built model, and then directly measure the actual distance between the keel pipe and the ceiling board on site with a tape measure and adjust it to the designed distance to control the position of the ceiling board in the chord height direction, and the construction is simple.

[0074] The present invention can well realize the installation of ceiling slats in the hollow design of ceiling panels. The ceiling slats adopt two steps of positioning and fine-tuning the attitude, and three controls to achieve the fixation of the most important temporary positioning. Then, the total station is used to measure with the Leica reflector to accurately adjust the attitude of the ceiling panel, taking into account the spatial installation position accuracy of each ceiling panel and the final formed visual effect of the hyperbolic ceiling. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The present invention will be further described in detail below with reference to the accompanying drawings.

[0076] Figure 1 It is a schematic diagram of the overall modeling structure of the ceiling panel in the present invention.

[0077] Figure 2 is Figure 1 a schematic diagram of the segmentation of the ceiling panel and the structure of the keel pipe in

[0078] Figure 3 It is a schematic diagram of the connection system structure of the ceiling panel of the present invention.

[0079] Figure 4 is Figure 3 a schematic diagram of the setting position of the starting positioning temporary bracket in

[0080] Figure 5 is Figure 3 a partial enlarged view in

[0081] Figure 6 It is the projection position of the horizontal projection control line and the ceiling panel edge installation control line in step ten of the construction method of the present invention.

[0082] Figure 7 It is the extraction position of the designed distance in step ten of the construction method of the present invention.

[0083] Figure 8 It is a schematic diagram of the attitude adjustment of the ceiling hanging assembly and the corresponding setting of the plate segments.

[0084] Figure 9 It is a schematic plan view of the setting position of the total station.

[0085] Reference numerals: 1 - structural main beam, 2 - keel pipe, 3 - keel pipe hoop assembly, 4 - ceiling hanging assembly, 5 - ceiling panel, 51 - first plate segment, 52 - second plate segment, 53 - third plate segment, 54 - fourth plate segment, 6 - starting positioning temporary bracket, 7 - plate joint, 8 - horizontal projection control line, 9 - ceiling panel edge installation control line, 10 - designed distance, 11 - total station. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0086] For the embodiments, refer to Figures 1-5As shown, the roof steel structure includes a group of structural main beams 1 that are vertically single-curved and convex outward and are arranged at intervals. The keel pipes 2 include a group of connecting pipes that span across the entire roof steel structure, closely adhere to the structural main beams, and are arranged at intervals. The connecting pipes are horizontally single-curved and convex outward.

[0087] The hoop installation points are set on the structural main beam 1. The top of the keel pipe hoop assembly 3 is fixedly connected to the structural main beam 1 by hooping at the hoop installation points, and the bottom of the keel pipe hoop assembly 3 is fixedly connected to the keel pipe 2 by hooping.

[0088] The hanging installation points are set on the keel pipe 2. The top of the ceiling hanging assembly 4 is adjustably or fixedly connected to the keel pipe 2 at the hanging installation points. The ceiling installation points are set on the ceiling board 5. The bottom of the ceiling hanging assembly 4 is adjustably or fixedly connected to the corresponding ceiling board 5 at the ceiling installation points.

[0089] Each ceiling board 5 is segmented with a fold instead of a curve along the board direction. In this embodiment, a total of four ceiling board segments are formed from bottom to top, namely the first board segment 51, the second board segment 52, the third board segment 53, and the fourth board segment 54. During construction, construction is carried out layer by layer. After the first board segment 51 is completely constructed, the second board segment 52 is constructed, and so on until all construction is completed. In this embodiment, the first board segment 51 is a vertical board, and the remaining board segments are single-curved boards.

[0090] The installation method of this ultra-long curved aluminum plate measurement and positioning is as follows:

[0091] The construction equipment includes a 3D scanner, a total station, a level, and a laser level.

[0092] The installation method of this ultra-long curved aluminum plate measurement and positioning is as follows:

[0093] Step 1, ceiling detailed design: According to the design, establish a ceiling model of the hyperbolic-shaped ceiling in BIM. In the ceiling model, design the hyperbolic-shaped ceiling as a group of ceiling boards 5 that are vertically single-curved and convex outward. Determine the quantity and size of the ceiling boards 5 and the size of the board seams. The width of each ceiling board 5 is the same, and the board seams 7 between adjacent ceiling boards 5 are of variable width.

[0094] Step 2, design instrument control stations: According to the size of the roof steel structure, design the positions of each instrument control station on the ground.

[0095] Step 3, construct the roof steel structure; design and mark each structural control point on the roof steel structure, and at the same time obtain the coordinates of each structural control point; review the structural control points: Use the total station 11 to review the positions of each structural control point reserved in Step 3 to meet the installation accuracy requirements.

[0096] Step 4, model the roof steel structure;

[0097] In Step 4, before modeling and scanning, target papers are pasted on each structural control point of the roof steel structure. Then, the scanner is set up at a visible position on the ground to perform an overall three-dimensional scan of the roof steel structure. After scanning, a point cloud model is generated in BIM. When splicing the point cloud model, the coordinates of each structural control point are input into the point cloud model to obtain the coordinates of other points in the point cloud model relative to the structural control points, thus completing the modeling of the roof steel structure model.

[0098] In Step 4, the distance between scanner stations is 5 m. When the scanner scans, target balls are used, and the number of target balls is 4. When placing the target balls, they should be avoided being arranged in a straight line.

[0099] In Step 5, after data fitting of the ceiling model in Step 1 and the roof steel structure model in Step 4, the installation process of the ceiling model is pre-enacted on the roof steel structure model:

[0100] Determine the dimensions, quantities, and spatial positions of each keel pipe 2, keel pipe hoop assembly 3, ceiling hanging assembly 4, the spatial position of the ceiling board 5, and the installation points of each component.

[0101] Determine the hoop installation points on the roof steel structure that are connected to the keel pipe hoop assembly 3.

[0102] Determine the hanging installation points on the keel pipe 2 that are connected to the ceiling hanging assembly 4.

[0103] Determine the ceiling installation points on the ceiling board 5 that are connected to the ceiling hanging assembly 4. Among them, fine adjustment measurement points need to be pre-marked at the corresponding positions of the installation points of the ceiling board 5 for easy on-site adjustment.

[0104] In Step 6, according to the results obtained from the data fitting in Step 5, each keel pipe 2, keel pipe hoop assembly 3, ceiling hanging assembly 4, and ceiling board 5 are processed.

[0105] In Step 7, install the keel pipe hoop assembly. The specific method for installing the keel pipe hoop assembly is as follows: Install the keel pipe hoop assembly on the roof steel structure by means of hoop connection; set up the total station 11 at the total station site designed in Step 2. After setting up the station and orienting, perform lofting according to the hoop installation points in Step 5. Use a Leica reflector for lofting the keel pipe hoop assembly in the forward view. After lofting is completed, make marks, and then install the keel pipe hoop assembly on the roof steel structure by means of hoop connection.

[0106] In Step 8, install the keel pipe and fix the keel pipe 2 to the keel pipe hoop assembly 3.

[0107] Step 9, Install the ceiling hanging assembly: Hang and install the ceiling hanging assembly 4 on the keel pipe 2. The specific method for installing the ceiling hanging assembly is as follows: Set up the total station 11 at the total station site. After setting up and orienting, conduct lofting according to the hanging and installation points in Step 6. Use a Leica reflector for lofting the hanging and installation points in the front view. After lofting, make marks, and then hang and install the ceiling hanging assembly 4 on the keel pipe 2.

[0108] Step 10,

[0109] A. The steps for installing the first board section 51 are as follows:

[0110] Step a, Refer to Figure 6 As shown, loft the planar position of a ceiling board 5 to be installed in the ceiling model onto the ground at the ground level to form a horizontal projection control line 8.

[0111] Step b, Refer to Figure 6 As shown, starting from the horizontal projection control line, use the vertical line function of the laser level to project the two side edges of the first board section 51 directly upward to form two ceiling board edge installation control lines 9. Since the first board section 51 is a vertical board, the ceiling board edge installation control lines 9 of this board section coincide with the two side edges of the board body.

[0112] Step c, Paste the Leica reflector onto the fine-tuning measurement points of the first board section 51 pre-marked in Step 5.

[0113] Step d, Install the starting positioning temporary bracket 6: Set up the starting positioning temporary bracket 6, which is detachably connected to the roof steel structure. Use a level to control the top elevation of the starting positioning temporary bracket 6 to be the bottom elevation of each first board section 51, and control the error of the top elevation of the starting positioning temporary bracket 6 within ±1 mm.

[0114] Before measuring with the level, first check whether the instrument i-angle error is within the allowable range. When setting the leveling point of the level, use an L-shaped settlement observation nail embedded in the roof steel structure as the back sight point to reduce the error when setting the staff. When measuring with the level, there should be no less than 2 back sight observation points to prevent accidental errors caused by incorrect positions when reading or setting the staff. A spirit level is set on the staff to ensure that the staff is in the plumb state during measurement.

[0115] Step e, Control the installation position of the first board section 51:

[0116] Control the longitudinal position of the ceiling board: Place the bottom surface of the first board section 51 on the top surface of the starting positioning temporary bracket 6.

[0117] Control the lateral position of the ceiling board: Adjust the first board section 51 so that the two side edges of the ceiling board respectively coincide and align with the two ceiling board edge installation control lines.

[0118] Control the position of the ceiling board in the chord height direction: Extract the designed distance data between the keel pipe 2 and the first plate section 51 in the model, and then measure on-site with a tape measure and adjust the actual distance between the two to the designed distance; Since the first plate section 51 is a vertical plate, the designed distance 10 between the keel pipe 2 and the first plate section 51 is the horizontal distance between the two.

[0119] Use three controls to position the ceiling board and temporarily fix the first plate section 51 to the ceiling hanging assembly 4.

[0120] Step f, then use a total station 11 with a Leica reflector to precisely adjust the attitude of the first plate section 51.

[0121] Step g, repeat steps a to f until the construction of the first plate section 51 in all columns is completed.

[0122] B. The steps for installing the second plate section 52 are as follows:

[0123] Step e, control the installation position of the second plate section 52:

[0124] Control the longitudinal position of the ceiling board: Control it based on the precisely adjusted position of the corresponding previous plate section, i.e., the first plate section 51.

[0125] Control the transverse position of the ceiling board: In the same way as the first plate section 51.

[0126] Control the position of the ceiling board in the chord height direction: In the same way as the first plate section 51.

[0127] Use three controls to position the ceiling board and temporarily fix the second plate section to the ceiling hanging assembly 4.

[0128] Step f, then use a total station 11 with a Leica reflector to precisely adjust the attitude of the second plate section 52.

[0129] Step g, repeat steps a to f until the construction of all second plate sections 52 is completed.

[0130] C. The steps for installing the third plate section 53 are as follows:

[0131] Step e, control the installation position of the third plate section 53 in the first column:

[0132] Control the longitudinal position of the ceiling board: Control it based on the precisely adjusted position of the previous plate section, i.e., the second plate section 52.

[0133] Control the transverse position of the ceiling board: In the same way as the first plate section 51.

[0134] Control the position of the ceiling board in the chord height direction: In the same way as the first plate section 51.

[0135] Three kinds of controls are used to position and temporarily fix the ceiling panel, and then a total station 11 is used with Leica reflectors to precisely adjust the attitude of the ceiling panel;

[0136] Step f, then a total station 11 is used with Leica reflectors to precisely adjust the attitude of the third panel section 53;

[0137] Step g, repeat steps a to f until the construction of the third panel section 53 of all columns is completed.

[0138] D. The steps for installing the fourth panel section 54 are as follows:

[0139] Step e, control the installation position of the fourth panel section 54:

[0140] Control the longitudinal position of the ceiling panel: It is controlled based on the precisely adjusted position of the previous panel section, i.e., the third panel section 53;

[0141] Control the lateral position of the ceiling panel: In the same way as the first panel section 51;

[0142] Control the position in the chord height direction of the ceiling panel: In the same way as the first panel section 51;

[0143] Step f, then a total station 11 is used with Leica reflectors to precisely adjust the attitude of the fourth panel section 54;

[0144] Step g, repeat steps a to f until the construction of the fourth panel section 54 of all columns is completed.

[0145] In step ten, when constructing each layer of ceiling panel sections, it is also possible to perform precise positioning once every five columns of ceiling panel sections on each layer through a total station 11, and a detection straightedge is used to control the surface curvature and installation position between the five columns of ceiling panels.

[0146] The installation control line 9 of the ceiling panel is generally set at the end of the panel section, and if necessary, it can also be added at other positions. The extraction position of the design distance 10 corresponds to the setting position of the ceiling hanging component 4.

[0147] In this embodiment, as shown in Figures 7-9 shown, the total station 11 is set on the building platform below the ceiling panel. Figure 9Along the overall structure of the ceiling board, the total station 11 measures at three measuring points in sequence. When using the total station for measurement, it should be noted that since each ceiling board is independent, try to use a fixed station for measurement and a fixed backsight point when setting up the total station to reduce the accumulation of errors. When measuring the height of the instrument, it should be measured from three directions respectively, and the reading should be estimated to the next digit after millimeters, and the average value of the three directions is taken to determine the height of the instrument. The backsight point should be fixed on the structural column by forced centering to reduce the backsight centering error. The measurement and setting-out data should directly use the coordinates extracted from the design and be directly imported into the instrument to prevent accidental errors caused by manual input. Before each measurement, the total station should be checked and set, such as: prism constant, ambient temperature, air pressure, etc. Calibrate the instrument regularly.

Claims

1. A method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate, characterized in that: The installation steps are as follows: Step 1, detailed ceiling design: according to the design, a ceiling model of a hyperbolic ceiling is established in BIM, and the hyperbolic ceiling is designed as a group of vertically single-curved convex ceiling panels (5) in the ceiling model, and the number and size of the ceiling panels (5) and the size of the panel seams are determined. The width of each ceiling panel (5) is the same, and the panel seams (7) between adjacent ceiling panels (5) are of variable width; Step 2: Design the instrument control station: Design the location of each instrument control station on the ground according to the size of the roof steel structure; Step 3: construct the roof steel structure; Step 4: Model the roof steel structure; Step 5: After fitting the data of the ceiling model in step 1 with the roof steel structure model in step 4, the installation process of the ceiling model is previewed on the roof steel structure model. Thus, the size, quantity and spatial position of each keel tube (2), keel tube clamp assembly (3), ceiling hanging assembly (4), the spatial position of the ceiling board (5) and the installation point of each component are determined, wherein the ceiling board (5) needs to mark the fine adjustment measurement points in advance at the corresponding positions of the installation points; Step six, according to the result obtained by data fitting in step five, processing each keel tube (2), keel tube clamp assembly (3), ceiling hanging assembly (4) and ceiling board (5); Step 7: Install the keel pipe clamp assembly, and clamp the keel pipe clamp assembly to the roof steel structure; Step eight, installing the keel tube, connecting and fixing the keel tube (2) and the keel tube clamp assembly (3); Step nine, installing the ceiling hanging assembly: hanging and installing the ceiling hanging assembly (4) and the keel tube (2); Step 10: Install the ceiling panel: Step a, lofting a ceiling panel (5) to be installed on the ground at a plane position in the ceiling model to form a horizontal projection control line (8); Step b, taking the horizontal projection control line (8) as the starting point, using the vertical line function of the laser level, directly projecting the side lines of the ceiling board (5) upward to form two ceiling board side installation control lines (9); Step c, sticking the Leica reflective sheet to the fine-tuning measuring points of each ceiling panel (5) pre-marked in step 5; Step d, installing the temporary bracket for initial positioning: erecting the temporary bracket for initial positioning (6), the temporary bracket for initial positioning (6) being detachably connected to the roof steel structure, using a level to control the top elevation of the temporary bracket for initial positioning (6) to be the bottom elevation of the ceiling board, and the error of the top elevation of the temporary bracket for initial positioning (6) being controlled within ±1 mm; Step e, control the installation position of each ceiling panel as follows: Controlling the longitudinal position of the ceiling panel: placing the bottom surface of the ceiling panel (5) on the top surface of the initial positioning temporary bracket (6); Control the lateral position of the ceiling panel: adjust the ceiling panel, align the two sides of the ceiling panel with the two sides of the ceiling panel to install the control lines (9); Control the chord height direction position of the ceiling board: extract the design distance (10) data between the keel tube (2) and the ceiling board (5) in the model, then use a tape measure to measure on site and adjust the actual distance between the two to the design distance. Three types of controls are used to position the ceiling panel and temporarily fix the ceiling panel (5) and the ceiling hanging assembly (4); Step f, using a Leica reflector and a total station (11) to measure and precisely adjust the posture of the ceiling panel (5); Step g, repeating steps a to f until all ceiling panels (5) are constructed.

2. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to claim 1 is characterized in that: Each ceiling board (5) is divided into sections along the board direction by folding instead of bending, and the whole forms four layers of ceiling board sections from bottom to top, namely a first board section (51), a second board section (52), a third board section (53) and a fourth board section (54). During construction, the first board section (51) is constructed layer by layer, and the second board section (52) is constructed after the first board section (51) is fully constructed, and so on until all the construction is completed.

3. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to claim 2 is characterized in that: In step 10, the steps for installing the first board section are as follows: Step e, controlling the installation position of the first plate segment (51): Controlling the longitudinal position of the ceiling panel: placing the bottom surface of the first panel section (51) on the top surface of the initial positioning temporary bracket (6); Controlling the lateral position of the ceiling panel: adjusting the first panel section (51) and aligning the two side edges of the ceiling panel with the two side edges of the ceiling panel to install the control lines (9); Controlling the chord height direction position of the ceiling panel: extracting the design distance data between the keel tube (2) and the first panel section (51) in the model, then measuring the actual distance between the two on site with a tape measure and adjusting the actual distance between the two to the design distance (10); The three controls are used to position the ceiling panel and temporarily fix the first panel section (51) to the ceiling hanging assembly (4). Step f, then using a Leica reflector and a total station (11) to measure and accurately adjust the posture of the first plate segment (51); Step g, repeating steps a to f until the construction of the first plate segments (51) of all rows is completed.

4. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to claim 3 is characterized in that: In step 10, the steps for installing the second plate segment, the third plate segment and the fourth plate segment are as follows: Step e, controlling the installation position of the second plate segment (52): Controlling the longitudinal position of the ceiling panel: controlling based on the position of the corresponding previous panel segment after precise adjustment, i.e., the second panel segment (52) is controlled based on the position of the first panel segment (51) after precise adjustment, i.e., the third panel segment (53) is controlled based on the position of the second panel segment (52) after precise adjustment, i.e., the fourth panel segment (54) is controlled based on the position of the third panel segment (53) after precise adjustment; Controlling the lateral position of the ceiling panel: in the same manner as the first panel section (51); Controlling the chord height direction position of the ceiling board: the method is the same as that of the first board section (51); The three controls are used to position the ceiling panel, and the second panel segment, the third panel segment and the fourth panel segment are temporarily fixed to the ceiling hanging assembly (4) respectively. Step f, then using the Leica reflector and a total station (11) to measure and accurately adjust the postures of the second plate segment, the third plate segment, and the fourth plate segment; Step g, repeating steps a to f until all the second plate segments, the third plate segments and the fourth plate segments are constructed.

5. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to claim 1 is characterized in that: In step 3, each structural control point is designed and marked on the roof steel structure, and the coordinates of each structural control point are obtained; the position of each structural control point is checked using a total station (11) to ensure that it meets the installation accuracy requirements; In step 4, before modeling and scanning, target paper is affixed to each structural control point of the roof steel structure, and then the scanner is set up at a line-of-sight position on the ground to perform an overall three-dimensional scan of the roof steel structure. After scanning, a point cloud model is generated in BIM. When the point cloud model is spliced, the coordinates of each structural control point are brought into the point cloud model to obtain the coordinates of other points in the point cloud model relative to the structural control points, thereby completing the modeling of the roof steel structure model.

6. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to claim 5 is characterized in that: In step 4, the distance between scanner stations is 5m. Target balls are used when scanning. There are 4 target balls. Avoid placing the target balls in a straight line.

7. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to claim 2 is characterized in that: In step 5, the installation points of each component include: Determine the installation point of the clamp on the roof steel structure that is connected to the keel tube clamp assembly (3); Determine the mounting point on the keel tube (2) for connecting with the ceiling mounting assembly (4); The ceiling installation point on the ceiling plate (5) connected to the ceiling hanging assembly (4) is determined, and the fine adjustment measurement point is pre-marked at the corresponding position of the ceiling installation point.

8. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to claim 7 is characterized in that: In step 7, the specific method for installing the keel tube clamp assembly is as follows: the total station (11) is set up on the total station site designed in step 2, and after the station orientation is completed, the clamp installation point in step 5 is laid out, and the keel tube clamp assembly is laid out using a Leica reflector for front vision, and after the layout is completed, a mark is made, and then the keel tube clamp assembly is clamped and installed with the roof steel structure; In step nine, the specific method for installing the ceiling hanging assembly is as follows: the total station (11) is set up on the total station site, and after the station orientation is completed, the hanging installation point is laid out according to the hanging installation point in step six, and the front view uses a Leica reflector to lay out the hanging installation point, and after the layout is completed, it is marked, and then the ceiling hanging assembly (4) and the keel tube (2) are hung and installed; In step 10, when constructing each layer of suspended ceiling panels, every five rows of suspended ceiling panels on each layer are accurately positioned by a total station (11), and a detection ruler is used between the five rows of suspended ceiling panels to control the surface curvature and installation position.

9. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to any one of claims 1 to 4, characterized in that: In step 10, before measuring with a level instrument, check whether the instrument's angle error is within the allowable range. When setting the level point of the level instrument, an L-shaped settlement observation nail is embedded in the roof steel structure as a backsight point to reduce the error when setting up the ruler. When measuring with a level instrument, there should be no less than two rear-sight observation points to prevent accidental errors caused by incorrect position when reading or setting up the scale. A level bubble is set on the scale to ensure that the scale is in a plumb state during measurement.

10. The method for measuring, positioning and installing an ultra-long arc-shaped aluminum plate according to any one of claims 1 to 8, characterized in that: The roof steel structure comprises a set of vertical single-curved outwardly protruding structural main beams (1) arranged at intervals. The keel pipe (2) comprises a group of connecting pipes which span the entire roof steel structure and are closely attached to the main structural beam and are arranged at intervals. The connecting pipes are horizontally convex in a single-curved arc. The clamp installation point is set on the main beam (1) of the structure, the top of the keel tube clamp assembly (3) is fixedly connected to the clamp of the main beam (1) of the structure at the clamp installation point, and the bottom of the keel tube clamp assembly (3) is fixedly connected to the clamp of the keel tube (2). The hanging installation point is set on the keel tube (2), the top of the ceiling hanging assembly (4) is adjustably connected or fixedly connected to the keel tube (2) corresponding to the hanging installation point, the ceiling installation point is set on the ceiling board (5), and the bottom of the ceiling hanging assembly (4) is adjustably connected or fixedly connected to the ceiling board (5) corresponding to the ceiling installation point.

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