Method and device for controlling levelness and perpendicularity of mixed tower duct piece construction

Abstract

The invention discloses a mixed tower segment construction levelness and perpendicularity control method and device, and the method comprises the steps: S1, installing an assembly platform and a central positioning disc; s2, erecting a theodolite; s3, determining the pasting position of the total station reflector plate; s4, pipe pieces of the first layer of tower ring are installed; s5, pasting a total station reflector plate; s6, the perpendicularity offset and the levelness of the first layer of tower ring are calculated; s7, mounting pipe pieces of a second layer of tower ring; s8, pasting a total station reflector plate; s9, the perpendicularity offset and the levelness of the second layer of tower ring are calculated; and S10, the segments of the other tower rings are sequentially installed, the segments of the tower rings on the odd number layers are installed according to the steps S4 to S6, and the segments of the tower rings on the even number layers are installed according to the steps S7 to S9 till installation of all the tower rings and adjustment of the levelness and the perpendicularity are completed. According to the invention, the problems of difficulty in levelness and perpendicularity detection and large deviation in the construction process of the mixed tower duct piece can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power tower barrel construction, and in particular to a method and device for controlling the horizontal degree and vertical degree of mixed tower segment construction. Background Art

[0002] A wind power tower barrel is the tower pole of a wind power generation unit and mainly plays a supporting role in the wind power generation unit. At present, according to different structural forms and materials used, wind power tower barrels are generally classified into all-steel towers, concrete-steel hybrid towers (mixed towers), and truss towers.

[0003] A mixed tower is usually composed of a combination of concrete and steel materials. The bottom is a concrete structure, and the upper part is a steel structure. The concrete structure at the bottom is a precast component, which is transported to the construction site for ring splicing and hoisting. Not only are the manufacturing process requirements strict at the front end, but the construction technology requirements at the later installation site are also quite strict. Since the construction site involves human and mechanical construction, construction errors are inevitable. Even if strict quality control is carried out for the previous ring splicing and hoisting, with the increase in the height of the tower barrel, its own self-weight and the later prestressed construction may affect the horizontal degree and vertical degree of segment assembly. After assembling a ring, it is necessary to pull a wire to determine the center position of this ring, and the monitoring difficulty of the horizontal degree and vertical degree also increases with the lifting of the construction operation platform. Excessive vertical deviation may lead to tower disassembly. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for controlling the horizontal degree and vertical degree of mixed tower segment construction, which can effectively solve the problems of difficult detection and large deviation of the horizontal degree and vertical degree during the construction of mixed tower segments.

[0005] Another purpose of the present invention is to provide a device for controlling the horizontal degree and vertical degree of mixed tower segment construction.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A method for controlling the horizontal degree and vertical degree of mixed tower segment construction, the mixed tower includes an upper steel tower barrel and a lower concrete tower barrel, the lower concrete tower barrel includes multiple tower rings stacked in sequence from bottom to top, two adjacent tower rings are installed with staggered joints, and each layer of tower ring includes multiple segments spliced in sequence along the circumferential direction; it is necessary to be equipped with: an assembly platform, a central positioning disk, a theodolite, a total station reflector, and a total station. The control method includes the steps,

[0008] S1. Install the assembly platform according to the preset machine position coordinates, and install the central positioning disk on the assembly platform to keep the center with the assembly platform;

[0009] S2. Set up the theodolite at the center of the central positioning disk, and lead the preset 0° line of the machine position to the assembly platform through the theodolite;

[0010] S3. Determine the pasting positions of the total station reflector sheets according to the arrangement of the segment prestressed cableways and the stagger joint angles of the upper and lower layers of segments in the design drawings, and avoid obstruction of the total station reflector sheets.

[0011] S4. Determine the offset angle ɑ of the 0° line of the machine position according to the number of assembled segments. Successively offset the angle ɑ through the theodolite to determine the control line positions of each segment of the first-layer tower ring, and then install the segments according to the control lines.

[0012] S5. Zero the scale of the theodolite, and determine the actual pasting positions of the total station reflector sheets on each segment by offsetting according to the pasting positions of the total station reflector sheets confirmed in step S3. Paste the total station reflector sheets according to the actual pasting positions, and keep them at a preset distance from the upper end faces of the corresponding segments.

[0013] S6. Use the total station to collect the data of the total station reflector sheets of all segments of the same tower ring. Calculate the actual center coordinates of the corresponding tower ring according to the data, calculate the verticality offset of the corresponding tower ring according to the actual center coordinates of the tower ring and the preset center coordinates of the machine position, calculate the levelness of the corresponding tower ring according to the height data of the total station reflector sheets, and adjust the segments according to the levelness and verticality offset.

[0014] S7. Then zero the scale of the theodolite, and determine the control line positions of each segment of the second-layer tower ring according to the segment stagger joint angle and the offset angle ɑ, and then install the segments according to the control lines.

[0015] S8. Zero the scale of the theodolite, and determine the actual pasting positions of the total station reflector sheets on each segment by offsetting according to the pasting positions of the total station reflector sheets confirmed in step S3. Paste the total station reflector sheets according to the actual pasting positions, and keep them at a preset distance from the upper end faces of the corresponding segments.

[0016] S9. Use the total station to collect the data of the total station reflector sheets of all segments of the same tower ring. Calculate the actual center coordinates of the corresponding tower ring according to the data, calculate the verticality offset of the corresponding tower ring according to the actual center coordinates of the tower ring and the preset center coordinates of the machine position, calculate the levelness of the corresponding tower ring according to the height data of the total station reflector sheets, and adjust the segments according to the levelness and verticality offset.

[0017] S10. Install the segments of the remaining tower rings in sequence. Among them, the segments of the odd-layer tower rings are installed according to steps S4 - S6, and the segments of the even-layer tower rings are installed according to steps S7 - S9 until the installation of all tower rings and the adjustment of the levelness and verticality are completed.

[0018] Further, in step S3, the total station reflector is avoided from the prestressed cableway and the staggered joint positions of the upper and lower segment rings, and the total station reflectors of the upper and lower segment rings are on the same straight line.

[0019] Further, the distance between the total station reflector and the upper end face of the corresponding segment is greater than or equal to 20 cm.

[0020] Further, the total station is used to collect the data of the total station reflectors of all segments of the same tower ring, and the actual center coordinates of the corresponding tower ring are calculated according to the data. Specifically:

[0021] The total station is used to collect the data of the total station reflectors of all segments of the same tower ring, and then the coordinates of all corresponding segments are obtained. The intersection position coordinates are determined according to the coordinates of all segments, that is, the actual center coordinates of the tower ring are obtained.

[0022] Further, the verticality offset of the corresponding tower ring is calculated according to the actual center coordinates of the tower ring and the preset center coordinates of the machine position. Specifically:

[0023] The actual center coordinates of the tower ring are compared with the preset center coordinates of the machine position to obtain the verticality deviation of the tower ring and the deviation quadrant position. The segment can be adjusted conveniently through the deviation quadrant position.

[0024] Another object of the present invention is achieved by the following technical solution:

[0025] A device for controlling the horizontal and vertical degrees of the mixed tower segment construction is used to implement the method for controlling the horizontal and vertical degrees of the mixed tower segment construction described above. It includes an assembly platform, a central positioning disk, a theodolite, a total station reflector and a total station. The assembly platform is horizontally arranged on the ground and is used for assembling segments. The central positioning disk is arranged at the center of the assembly platform and is concentric with the assembly platform. The theodolite is arranged at the center of the central positioning disk and is used to position the 0° line of the machine position and the control line for segment installation. The total station reflector is pasted on the segment, and the total station is arranged on the central positioning disk and is used to collect the data of the total station reflector.

[0026] Further, the distance between the total station reflector and the upper end face of the corresponding segment is greater than or equal to 20 cm.

[0027] Further, the total station reflectors of the upper and lower segment rings are on the same straight line.

[0028] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0029] 1. The present invention installs total station reflectors on the segments, directly measures the pasted total station reflectors using a total station, accurately measures the levelness and verticality of the tower ring through coordinates and elevation, avoids the human operation error caused by manually operating the wire to determine the center position, can effectively improve the accuracy, and the construction personnel adjust the segments in real time according to the levelness and verticality, precisely control the segment assembly and hoisting construction process, improve the construction quality, and realize the long-term stable operation of the tower barrel.

[0030] 2. The present invention locates the control line for segment installation through a theodolite, makes the side contour line of the segment closely adhere to the control line, and realizes the precise installation of the segment; at the same time, the total station reflector avoids the prestressed cableway position and the staggered joint position of the upper and lower layers of segments, so that the total station reflector is unobstructed, improves the measurement accuracy, and extends the service life.

[0031] 3. The present invention can also monitor the adverse effects of later self-weight and prestress construction on the levelness and verticality of the tower barrel. By monitoring the verticality and levelness of the tower body at different construction stages, it is convenient for construction personnel to judge which process has the greatest impact on the verticality and levelness. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the device for controlling the levelness and verticality of the mixed tower segment construction of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1:

[0035] This embodiment provides a method for controlling the levelness and verticality of the mixed tower segment construction. The mixed tower includes an upper steel tower barrel and a lower concrete tower barrel. The lower concrete tower barrel includes multiple tower rings stacked in sequence from bottom to top. The adjacent tower rings are installed with staggered joints. Each layer of tower ring includes multiple segments spliced in sequence along the circumferential direction; it is necessary to configure: an assembly platform, a central positioning disk, a theodolite, a total station reflector, and a total station. The control method includes the steps,

[0036] S1. Install the assembly platform according to the preset machine position coordinates, and install the central positioning disk on the assembly platform to keep the center of the circle with the assembly platform;

[0037] S2. Set up the theodolite at the center of the center positioning disk, and use the theodolite to lead the preset machine position 0° line to the assembly platform;

[0038] S3. Determine the pasting positions of the total station reflectors according to the arrangement of the segment prestressed cableways and the stagger angles of the upper and lower layers of segments in the design drawings, so that the total station reflectors avoid the prestressed cableways and the stagger positions of the upper and lower layers of segments, and the total station reflectors of the upper and lower layers of segments are on the same straight line to avoid occlusion of the total station reflectors;

[0039] S4. Determine the offset angle ɑ of the machine position 0° line according to the number of assembled segments. In this embodiment, taking the segments of each tower ring as four pieces and the prestressed cableways as thirty as an example, the offset angle ɑ is 90 degrees at this time. Offset the angle ɑ in sequence through the theodolite to determine the control line positions of each segment of the first-layer tower ring, and realize the precise installation of the segments by closely attaching the side contour line of the segment to the control line;

[0040] S5. Zero the theodolite scale, and determine the actual pasting positions of the total station reflectors on each segment according to the pasting positions of the total station reflectors confirmed in step S3. According to the number of prestressed cableways in this embodiment, it can be set to rotate the theodolite counterclockwise by 9°, 105°, 189°, 285° to determine the actual pasting positions. Paste the total station reflectors according to the actual pasting positions and keep a preset distance position from the upper end face of the segment. In this embodiment, it is 20 cm as an example;

[0041] S6. Use the total station to collect the data of the total station reflectors of all segments of the same tower ring, calculate the actual center coordinates of the corresponding tower ring according to the data, calculate the verticality offset of the corresponding tower ring according to the actual center coordinates of the tower ring and the preset center coordinates of the machine position, and calculate the levelness of the corresponding tower ring according to the height data of the total station reflectors, and adjust the segments according to the levelness and verticality offset; specifically:

[0042] Collect the data of the total station reflectors of all segments of the same tower ring through the total station, and then obtain the coordinates of all corresponding segments. Determine the intersection position coordinates according to the coordinates of all segments, that is, obtain the actual center coordinates of the tower ring;

[0043] Compare the actual center coordinates of the tower ring with the preset center coordinates of the machine position, and the verticality deviation and the deviation quadrant position of the assembled segments can be quickly determined. The smaller the verticality deviation, the smaller the error of the assembled segments, ensuring the construction quality of the assembled segments;

[0044] Calculate the levelness of the corresponding tower ring according to the height data of the total station reflectors, and adjust the segments according to the levelness and verticality offset. It is convenient to adjust the segments through the deviation quadrant position;

[0045] S7. Next, zero the theodolite scale. Determine the control line positions of each segment of the second - layer tower ring according to the staggered - joint angle of the segments and the offset angle ɑ. By closely attaching the side contour line of the segment to the control line, precise installation of the segment is achieved.

[0046] S8. Zero the theodolite scale. Determine the actual pasting positions of the total - station reflectors on each segment by offsetting according to the pasting positions of the total - station reflectors confirmed in step S3. According to the number of prestressed cableways in this embodiment and the staggered - joint angle between the upper and lower - layer segments, it can be set to rotate the theodolite counter - clockwise by 60°, 144°, 240°, 324° to determine the actual pasting positions. Paste the total - station reflectors according to the actual pasting positions and keep them at a preset distance position from the upper end face of the segment. In this embodiment, 20 cm is taken as an example.

[0047] S9. Use the total station to collect the data of the total - station reflectors of all segments of the same tower ring. Calculate the actual center - point coordinates of the corresponding tower ring according to the data. Calculate the verticality offset of the corresponding tower ring based on the comparison between the actual center - point coordinates of the tower ring and the preset center - point coordinates of the machine position, and calculate the levelness of the corresponding tower ring according to the height data of the total - station reflectors. Adjust the segments according to the levelness and verticality offset. Specifically:

[0048] Collect the data of the total - station reflectors of all segments of the same tower ring through the total station, and then obtain the coordinates of all corresponding segments. Determine the intersection - point coordinates according to the coordinates of all segments, that is, obtain the actual center - point coordinates of the tower ring.

[0049] Compare the actual center - point coordinates of the tower ring with the preset center - point coordinates of the machine position, and the verticality deviation and the deviation quadrant position of the assembled segments can be quickly determined. The smaller the verticality deviation, the smaller the error of the assembled segments, ensuring the construction quality of the assembled segments.

[0050] Calculate the levelness of the corresponding tower ring according to the height data of the total - station reflectors. Adjust the segments according to the levelness and verticality offset. It is convenient to adjust the segments through the deviation quadrant position.

[0051] S10. Install the segments of the remaining tower rings in sequence. Among them, the segments of the odd - numbered - layer tower rings are installed according to steps S4 - S6, and the segments of the even - numbered - layer tower rings are installed according to steps S7 - S9 until the installation of all tower rings and the adjustment of the levelness and verticality are completed.

[0052] Embodiment 2:

[0053] The difference between this embodiment and Embodiment 1 is that: the number of prestressed cableways of the assembled segments in this embodiment is forty. Therefore, in step S5, according to the number of prestressed cableways in this embodiment, it can be set to rotate the theodolite counter - clockwise by 9°, 99°, 189°, 279° to determine the actual pasting positions.

[0054] In step S8, according to the number of prestressed wire ropes and the stagger angle of the upper and lower segment linings in this embodiment, it can be set to rotate the theodolite counterclockwise by 54°, 144°, 234°, and 324° to offset and determine the actual pasting position.

[0055] Embodiment 3:

[0056] As Figure 1 shown, this embodiment provides a device for controlling the levelness and verticality of the mixed tower segment lining construction, which is used for the method for controlling the levelness and verticality of the mixed tower segment lining construction described in Embodiment 1, and includes an assembly platform 1, a central positioning disk 2, a theodolite 3, a total station reflector 4, and a total station (not shown in the figure). The assembly platform is horizontally arranged on the ground and is used for assembling the segment lining 5. The central positioning disk is arranged at the center of the assembly platform and is concentric with the assembly platform. The theodolite is arranged at the center of the central positioning disk and is used for positioning the 0° line 6 of the machine position and the control line 7 for segment lining installation. The total station reflector is pasted on the segment lining, and the total station is arranged on the central positioning disk and is used for collecting the data of the total station reflector.

[0057] The distance between the total station reflector and the upper end face of the corresponding segment lining is greater than or equal to 20 cm, and the total station reflectors of the upper and lower segment linings are on the same straight line.

[0058] The above is only a preferred embodiment of the present invention patent, but the protection scope of the present invention patent is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention patent, according to the technical solution of the present invention patent and its inventive concept, makes equivalent replacements or changes, all belong to the protection scope of the present invention patent.

Claims

1. A method for controlling the horizontality and verticality in the construction of segmental pipes of a hybrid tower. The hybrid tower includes an upper steel tower barrel and a lower concrete tower barrel. The lower concrete tower barrel includes multiple tower rings stacked in sequence from bottom to top. Two adjacent tower rings are installed with staggered joints. Each layer of tower ring includes multiple segmental pipes spliced in sequence along the circumferential direction. It is characterized in that, It needs to be configured with: an assembly platform, a central positioning disk, a theodolite, a total station reflector sheet, and a total station. The control method includes the following steps: S1. Install the assembly platform according to the preset machine position coordinates, and install the central positioning disk on the assembly platform to keep the center of the circle with the assembly platform. S2. Set up the theodolite at the center of the circle of the central positioning disk, and lead the preset 0° line of the machine position to the assembly platform through the theodolite. S3. Determine the pasting position of the total station reflector sheet according to the layout of the segment prestressed cableway and the stagger angle of the upper and lower layers of segments in the design drawing, and avoid blocking the total station reflector sheet. S4. Determine the offset angle ɑ of the 0° line of the machine position according to the number of assembled segments. Offset the angle ɑ in sequence through the theodolite to determine the control line positions of each segment of the first-layer tower ring, and then install the segments according to the control lines. S5. Reset the theodolite scale to zero. Offset according to the pasting position of the total station reflector sheet confirmed in step S3 to determine the actual pasting position of the total station reflector sheet on each segment. Paste the total station reflector sheet according to the actual pasting position and keep it at a preset distance from the upper end face of the corresponding segment. S6. Use the total station to collect the data of the total station reflector sheets of all segments in the same tower ring. Calculate the actual center coordinates of the corresponding tower ring according to the data. Calculate the verticality offset of the corresponding tower ring according to the actual center coordinates of the tower ring and the preset center coordinates of the machine position. Calculate the levelness of the corresponding tower ring according to the height data of the total station reflector sheet, and adjust the segments according to the levelness and verticality offset. S7. Then reset the theodolite scale to zero. Determine the control line positions of each segment of the second-layer tower ring according to the segment stagger angle and the offset angle ɑ, and then install the segments according to the control lines. S8. Reset the theodolite scale to zero. Offset according to the pasting position of the total station reflector sheet confirmed in step S3 to determine the actual pasting position of the total station reflector sheet on each segment. Paste the total station reflector sheet according to the actual pasting position and keep it at a preset distance from the upper end face of the corresponding segment. S9. Use the total station to collect the data of the total station reflector sheets of all segments in the same tower ring. Calculate the actual center coordinates of the corresponding tower ring according to the data. Calculate the verticality offset of the corresponding tower ring according to the actual center coordinates of the tower ring and the preset center coordinates of the machine position. Calculate the levelness of the corresponding tower ring according to the height data of the total station reflector sheet, and adjust the segments according to the levelness and verticality offset. S10. Install the segments of the remaining tower rings in sequence. Among them, the segments of the odd-layer tower rings are installed according to steps S4 - S6, and the segments of the even-layer tower rings are installed according to steps S7 - S9 until the installation of all tower rings and the adjustment of the levelness and verticality are completed.

2. The method for controlling the horizontal degree and vertical degree of the mixed tower segment construction according to claim 1, characterized in that, In step S3, the total station reflector sheet avoids the prestressed cableway and the stagger position of the upper and lower layers of segments, and the total station reflector sheets of the upper and lower layers of segments are on the same straight line.

3. The method for controlling the horizontal degree and vertical degree of the mixed tower segment construction according to claim 1, characterized in that, The distance between the total station reflector sheet and the upper end face of the corresponding segment is greater than or equal to 20 cm.

4. The method for controlling the horizontal degree and vertical degree of the mixed tower segment construction according to claim 1, characterized in that, Use the total station to collect the data of the total station reflector sheets of all segments in the same tower ring. Calculate the actual center coordinates of the corresponding tower ring according to the data. Specifically: Collect the data of the total station reflectors of all segments of the same tower ring through the total station, and then obtain the coordinates of all corresponding segments. Determine the intersection position coordinates based on the coordinates of all segments, that is, obtain the actual center coordinates of the tower ring.

5. The method for controlling the horizontal degree and vertical degree of the mixed tower segment construction according to claim 1, characterized in that, Calculate the verticality offset of the corresponding tower ring according to the actual center coordinates of the tower ring and the preset center coordinates of the machine position. Specifically: Compare the actual center coordinates of the tower ring with the preset center coordinates of the machine position to obtain the verticality deviation of the tower ring and the position of the deviation quadrant, which is convenient for adjusting the segments through the position of the deviation quadrant.

6. A device for controlling the horizontal and vertical degrees of segment construction of a mixed tower, characterized in that, A device for implementing the method for controlling the horizontality and verticality of the mixed tower segment construction according to any one of claims 1 to 5, including an assembly platform, a central positioning disk, a theodolite, a total station reflector and a total station. The assembly platform is horizontally arranged on the ground and is used for assembling segments. The central positioning disk is arranged at the center of the assembly platform and is concentric with the assembly platform. The theodolite is arranged at the center of the central positioning disk and is used for positioning the 0° line of the machine position and the control line for segment installation. The total station reflector is pasted on the segment, and the total station is arranged on the central positioning disk and is used for collecting the data of the total station reflector.

7. The leveling and perpendicularity control device for the mixed tower segment construction according to claim 6, characterized in that, The distance between the total station reflector and the upper end face of the corresponding segment is greater than or equal to 20 cm.

8. The device for controlling the horizontal degree and vertical degree of the mixed tower segment construction according to claim 6, characterized in that, The total station reflectors of the upper and lower layer segments are on the same straight line.

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