Positioning construction method for a pylon steel shell and positioning device thereof

Abstract

The application relates to a positioning construction method for a cable tower steel shell and a positioning device thereof, wherein a first positioning block at the periphery forms a rough positioning constraint, and a second positioning block at the inside provides a fine positioning reference as a supporting point. Before the first positioning block and the second positioning block are fixed with corresponding steel bases respectively, the elevation and position of each positioning block are calibrated according to design requirements, so that the parameters of each positioning supporting point can independently meet the requirements, and the deviation of the positioning steel frame caused by the self error is reduced. When the positioning steel frame is hoisted, a movable gap is reserved to provide space for horizontal position adjustment, so that the adjustment is prevented from being stuck due to the early rigid contact with the second positioning block, and the flexibility and accuracy of the horizontal position adjustment are improved. The positioning steel frame is fixed with the first positioning block and the second positioning block to form a stable structure system, which can resist the disturbance of the construction load and the temperature deformation, and guarantee the long-term installation accuracy. Meanwhile, the construction is carried out in stages, the independent inspection and correction of each link are facilitated, the quality control is facilitated, and the efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to a positioning construction method and positioning device for the steel shell of a cable tower. Background Technology

[0002] In the construction of large bridges, steel-concrete composite main towers have become one of the mainstream cable-stayed tower types. The installation and positioning of the first steel shell section and the lower concrete structure is a critical step in the construction process, as its positioning accuracy directly affects the accuracy of subsequent construction and the overall project quality. However, the installation and positioning of the first steel shell section and the lower concrete structure still faces challenges, including positioning difficulties and insufficient positioning accuracy, which negatively impact construction quality.

[0003] To address the aforementioned positioning issues, existing technologies have proposed relevant solutions. For example, patent CN116575336B discloses a positioning device and construction method suitable for the bottom of a cable-stayed tower. This device achieves rapid positioning by interlocking a positioning frame unit with a steel base, and uses the positioning frame unit to complete the installation and positioning of the first steel shell section, thus improving positioning efficiency to some extent. However, this solution does not disclose how to adjust the positioning accuracy of the positioning frame unit, making it difficult to meet the requirements of high-precision construction. Patent application CN112554340A discloses a positioning and correction device for first-floor steel structure columns. It guides the steel structure column positioning through pre-embedded parts with conical grooves, primarily aiming to improve positioning efficiency. However, it also does not address the accuracy adjustment scheme during the positioning process, failing to solve the accuracy control problem during the installation of the first steel shell section and the lower concrete structure.

[0004] In summary, although existing technologies have made attempts to improve the positioning efficiency of the first steel shell section, they have not effectively solved the problem of precision adjustment during the positioning process. As a result, the installation positioning accuracy of the first steel shell section and the lower concrete structure is difficult to guarantee, which still restricts the improvement of construction quality. Therefore, there is an urgent need for a technical solution that can improve the high-precision installation positioning of the first steel shell section and the lower concrete structure. Summary of the Invention

[0005] Therefore, it is necessary to provide a positioning construction method and positioning device for the steel shell of cable towers to address the above problems.

[0006] A positioning construction method for the steel shell of a cable tower, the positioning construction method comprising:

[0007] After each first concrete support reaches its design strength, the corresponding first positioning block is hoisted into place according to the design plan position, and the elevation of the first positioning block is vertically adjusted according to the design elevation; each first positioning block is fixedly connected to the steel base on the corresponding first concrete support; wherein each first positioning block forms an installation space.

[0008] After each second concrete support reaches its design strength, the corresponding second positioning block is hoisted into place according to the design plan position, and the elevation of the second positioning block is vertically adjusted according to the design elevation; each second positioning block is fixedly connected to the steel base of the corresponding second concrete support, wherein each second positioning block is located within the installation space.

[0009] The positioning steel frame is hoisted into the installation space and positioned above the second positioning block, so that there is a movable gap between the positioning steel frame and the second positioning block;

[0010] The current actual coordinate position of the positioning steel frame is detected. The positioning steel frame is moved according to the target coordinate position until the current actual coordinate position matches the target position. Then, the positioning steel frame is lowered onto the second positioning block.

[0011] The positioning steel frame is fixedly connected to the second positioning block and the first positioning block.

[0012] In one embodiment, the positioning construction method further includes:

[0013] Two tower columns correspond to two spaced positioning steel frames, and the first positioning block and the second positioning block corresponding to the two positioning steel frames are installed synchronously; the movement of the second positioning block is adjusted, and the elevation deviation of the second positioning block corresponding to the two positioning steel frames is measured so that the elevation deviation is less than or equal to the preset elevation difference.

[0014] After placing one of the positioning steel frames onto the corresponding second positioning block, measure the absolute coordinates of the reference point on the positioning steel frame.

[0015] Based on the absolute coordinates of this reference point, determine the target coordinates of another positioning steel frame;

[0016] According to the target coordinates, hoist another positioning steel frame and place it on the corresponding second positioning block.

[0017] In one embodiment, the hoisting and positioning steel frame is positioned within the installation space and above the second positioning block, and further includes:

[0018] The hoisting and positioning steel frame is placed on the support ball on the second positioning block so that there is the aforementioned movable gap between the positioning steel frame and the second positioning block;

[0019] Obtain the pressure data of the support balls on each of the second positioning blocks;

[0020] Determine whether the pressure data of the supporting balls on all the second positioning blocks are within the preset pressure range within the preset time range;

[0021] If not, readjust the hoisting elevation of each feature point on the positioning steel frame until the pressure data of the support balls on all the second positioning blocks are within the preset pressure range within the preset time range.

[0022] In one embodiment, if not, the step of readjusting the hoisting elevation of each feature point on the positioning steel frame further includes:

[0023] Determine the location of the second positioning block where the pressure data of the support ball is not within the preset pressure range;

[0024] After adjusting the hoisting mechanism relative to the position of the second positioning block by a set distance for lowering or raising, continue to lower the positioning steel frame as a whole, and repeatedly obtain the pressure data of the support balls on each second positioning block.

[0025] In one embodiment, the process of detecting the current actual coordinate position of the positioning steel frame, adjusting the movement of the positioning steel frame according to the target coordinate position until the current actual coordinate position matches the target position, and then lowering the positioning steel frame onto the second positioning block includes:

[0026] Control the release of the preset weight of the positioning steel frame onto the support ball, and detect the current actual coordinate position of the positioning steel frame; wherein, the preset weight is less than the weight of the positioning steel frame;

[0027] Adjust the positioning steel frame according to the target coordinate position until the current actual coordinate position matches the target position. Then, control the release of the entire weight of the positioning steel frame onto the support ball until the support ball is completely pressed into the second positioning block, and place the positioning steel frame on the second positioning block.

[0028] In one embodiment, the first positioning block corresponding to the two positioning steel frames is installed simultaneously with the second positioning block, and then the process further includes:

[0029] Adjust the movement of the second positioning block so that the deviation between any two second positioning blocks in the X direction of each positioning steel frame is within a second preset difference range; so that the distance difference between two second positioning blocks at the same position in the X direction between the two positioning steel frames is less than or equal to a preset length value; wherein, the X direction is the direction from one positioning steel frame to another positioning steel frame.

[0030] And / or adjust the movement of the second positioning block so that the deviation of any two second positioning blocks in the Y direction corresponding to each positioning steel frame is within the range of a third preset difference value; so that the deviation directions of two second positioning blocks at the same position in the Y direction corresponding to the two positioning steel frames are different; wherein, the Y direction is the direction intersecting with the X direction.

[0031] In one embodiment, the elevation deviation between the second positioning blocks corresponding to the two positioning steel frames is measured to be less than or equal to a preset elevation difference; wherein the preset elevation difference is less than the target elevation deviation, the method further includes:

[0032] Adjust the movement of the second positioning block so that the deviation in the height direction between any two second positioning blocks corresponding to each positioning steel frame is less than or equal to the first preset difference.

[0033] Compared with existing technologies, the above-described positioning construction method for cable tower steel shells has at least the following advantages:

[0034] The outermost first positioning block forms a coarse positioning constraint by enclosing the installation space, while the inner second positioning block provides a fine positioning reference as a support point. This dual positioning reference works in conjunction to improve the installation accuracy of the positioning steel frame and effectively avoid the cumulative errors that may arise from a single reference. Before fixing the first and second positioning blocks to their corresponding steel bases, both are calibrated for elevation and position according to design requirements, ensuring that the parameters of each positioning support point independently meet the standards. This lays a high-precision foundation for the subsequent installation of the positioning steel frame and reduces frame offset caused by errors in the first and second positioning blocks themselves. A clearance is reserved during the hoisting of the positioning steel frame to provide ample operating space for horizontal position adjustment, avoiding premature rigid contact between the positioning steel frame and the second positioning block that could cause adjustment jamming. This allows the positioning steel frame to accurately match the target coordinates with fewer constraints, improving the flexibility and accuracy of planar position adjustment. Using this positioning construction method, the positioning steel frame is ultimately double-fixed to the first and second positioning blocks, forming a stable structural system that combines external spatial constraints with internal support positioning. This system can also effectively resist load disturbances and temperature deformation during construction. Meanwhile, the phased construction process of the positioning blocks and positioning steel frame allows for independent inspection and correction of each step, reducing construction complexity, facilitating on-site quality control, and improving construction efficiency.

[0035] A positioning device for the steel shell of a cable tower, installed using the positioning construction method described above, comprises a plurality of first positioning blocks, a plurality of second positioning blocks, and a positioning steel frame. Each first positioning block is fixed to a steel base of a corresponding first concrete pier, and the first positioning blocks form an installation space. The second positioning blocks are spaced apart in the installation space, and each second positioning block is fixed to a steel base of a corresponding second concrete pier. The positioning steel frame is disposed within the installation space and located on the second positioning blocks. Each first positioning block is fixedly connected to the side wall of the positioning steel frame, and each second positioning block is fixedly connected to the bottom of the positioning steel frame.

[0036] In one embodiment, the second positioning block includes a positioning top plate, a positioning bottom plate, a support plate, and a receiving component. The support plate stands on the positioning bottom plate, and the positioning top plate is disposed on the side of the support plate facing away from the positioning bottom plate. The positioning steel frame is disposed on the positioning top plate. A movable hole is formed on the positioning top plate, and a receiving cavity is formed inside the receiving component. The receiving component is disposed on the side of the positioning top plate facing the support plate so that the receiving cavity communicates with the movable hole. The positioning device also includes a support ball, which is rotatably disposed in the receiving cavity so that a portion of the support ball extends out of the movable hole. A pressure sensor is disposed on the support ball, and the support ball can be pressed into the receiving cavity under force.

[0037] In one embodiment, a docking plate is provided on the bottom of the positioning steel frame opposite to the second positioning block, and the docking plate can be placed on the positioning top plate; the number of support plates for each second positioning block is at least two, wherein two of the support plates are spaced apart on the positioning bottom plate, and the receiving member is located between the two support plates.

[0038] In one embodiment, the positioning device further includes splicing components, the number of which is consistent with the number of the first positioning blocks, and each of the first positioning blocks is fixedly connected to the positioning steel frame via one of the splicing components. Attached Figure Description

[0039] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown in the drawings only as examples and not necessarily to actual scale.

[0042] Figure 1 This is a top view of a positioning device for a cable tower steel shell during construction, according to one embodiment.

[0043] Figure 2 for Figure 1 A top view of the positioning device.

[0044] Figure 3 for Figure 2 A partial structural diagram of the second positioning block and the positioning steel frame.

[0045] Figure 4 for Figure 3 The second positioning block and the positioning steel frame shown are in a side view in a state of use.

[0046] Figure 5 for Figure 4 The second positioning block and the positioning steel frame shown are in a side view in another usage state.

[0047] Figure 6 for Figure 1 Top view of the two positioning devices shown.

[0048] Figure 7 This is a flowchart illustrating a method for positioning and constructing a cable tower steel shell, as exemplified by one of the methods.

[0049] Explanation of reference numerals in the attached figures:

[0050] Positioning device 10; first positioning block 100; second positioning block 200; positioning top plate 210; positioning bottom plate 220; support plate 230; receiving component 240; support ball 250; guide component 260; guide ramp 262; positioning steel frame 300; docking plate 310; first concrete support pier 20; second concrete support pier 30; third concrete support pier 40. Detailed Implementation

[0051] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0052] The steel shell of a cable tower is typically assembled and erected on-site. Because the sections of the steel shell are connected by bolts and welding, and the force is transmitted through metal-to-metal contact, significant adjustments to its alignment are not possible during the erection of the steel shell. To ensure the overall alignment of the assembled tower column is smooth and meets design requirements, stringent requirements are placed on the measurement and control accuracy of the tower column assembly. The first section, located at the bottom of the cable tower's steel structure, is a crucial part of the cable tower assembly measurement, requiring extremely high precision and being a key component for the success of the entire cable tower installation. The positioning accuracy of the first steel shell section directly depends on the installation and positioning accuracy of the positioning steel frame; therefore, even higher precision requirements are placed on the installation of the positioning steel frame.

[0053] See Figures 1 to 3The positioning device 10 for the steel shell of a cable tower in one embodiment of this application is used for positioning and installing the first section of the steel shell of the cable tower, and can at least improve the positioning accuracy of the first section of the steel shell. Specifically, the positioning device 10 includes a plurality of first positioning blocks 100, a plurality of second positioning blocks 200, and a positioning steel frame 300. Each first positioning block 100 is fixed on the steel base of the corresponding first concrete support 20, and the first positioning blocks 100 form an installation space. The second positioning blocks 200 are spaced apart in the installation space, and each second positioning block 200 is fixed on the steel base of the corresponding second concrete support 30. The positioning steel frame 300 is set in the installation space and located on the second positioning blocks 200. Each first positioning block 100 is fixedly connected to the side wall of the positioning steel frame 300, and each second positioning block 200 is fixedly connected to the bottom of the positioning steel frame 300.

[0054] Multiple first positioning blocks 100 form an installation space, providing coarse positioning constraints for the positioning steel frame 300. Second positioning blocks 200, spaced internally, directly bear the vertical load of the positioning steel frame 300. The first positioning blocks 100 and second positioning blocks 200 are independently fixed to the steel bases of their corresponding concrete supports, allowing for individual adjustment of their planar position and elevation. This reduces the accumulation of errors between components and provides a high-precision reference for the positioning steel frame 300. Simultaneously, the positioning steel frame 300 is doubly fixed by connecting to the side walls of the first positioning blocks 100 and to the bottom of the second positioning blocks 200. This not only restricts the large-scale horizontal displacement of the positioning steel frame 300 through the first positioning blocks 100 but also transmits vertical forces through the second positioning blocks 200, effectively resisting load disturbances and temperature deformation during construction. Furthermore, the modular design facilitates the prefabrication, transportation, and installation of individual positioning blocks, reducing on-site construction complexity.

[0055] See Figures 3 to 5In one embodiment, the second positioning block 200 includes a positioning top plate 210, a positioning bottom plate 220, a support plate 230, and a receiving member 240. The support plate 230 stands on the positioning bottom plate 220, and the positioning top plate 210 is disposed on the side of the support plate 230 facing away from the positioning bottom plate 220. The positioning steel frame 300 is disposed on the positioning top plate 210. A movable hole is provided on the positioning top plate 210, and a receiving cavity is formed within the receiving member 240. The receiving member 240 is disposed on the side of the positioning top plate 210 facing the support plate 230, so that the receiving cavity communicates with the movable hole. The positioning device 10 also includes a support ball 250, which is rotatably disposed within the receiving cavity, so that a portion of the support ball 250 extends out through the movable hole. A pressure sensor is provided on the support ball 250, and the support ball 250 can be pressed into the receiving cavity under force. Specifically, when the support ball 250 is pressed into the receiving cavity under force, the receiving member 240 undergoes plastic deformation. Alternatively, the support ball 250 can be placed inside the receiving cavity by means of an elastic element. After the support ball 250 is subjected to force to overcome the elastic force of the elastic element, it can be pressed into the receiving cavity.

[0056] Since there are multiple second positioning blocks 200, when the positioning steel frame 300 is hoisted onto the second positioning blocks 200, the positioning steel frame 300 first contacts the support balls 250. Only when the positioning steel frame 300 can contact the support balls 250 of each of the second positioning blocks 200 can the overall flatness of the positioning steel frame 300 be guaranteed. Under the premise of ensuring flatness, adjusting the planar position coordinates of the positioning steel frame 300 can effectively improve the coordinate adjustment accuracy of the positioning steel frame 300. At the same time, when part of the weight of the positioning steel frame 300 is released and applied to the support balls 250, the support balls 250 will not squeeze and deform the housing 240. The support of a certain weight can improve the stability of the positioning steel frame 300 during adjustment, and the support balls 250 can rotate, reducing the adjustment resistance of the positioning steel frame 300. When the full weight of the positioning steel frame 300 is applied to the support ball 250, the support ball 250 can be completely pressed into the receiving cavity of the receiving member 240 without affecting the stability of the positioning steel frame 300 set on the second positioning block 200, thus ensuring the installation accuracy of the positioning steel frame 300.

[0057] Specifically, each second positioning block 200 is provided with at least two spaced support balls 250. By providing at least two support balls 250, the reliability of positioning and supporting the positioning steel frame 300 can be further improved. In other embodiments, the number of support balls 250 on each second positioning block 200 can also be one, three, or other numbers.

[0058] In this embodiment, the height of the support ball 250 protruding above the positioning top plate 210 is 2mm-10mm. For example, the height of the support ball 250 protruding above the positioning top plate 210 is 5mm, so that the movable gap between the positioning steel frame 300 and the positioning top plate 210 is 5mm, which facilitates the adjustment of the position of the positioning steel frame 300.

[0059] In one embodiment, a docking plate 310 is provided on the bottom of the positioning steel frame 300 opposite to the second positioning block 200, and the docking plate 310 can be placed on the positioning top plate 210. By providing the docking plate 310, the stability of the positioning steel frame 300 placed on the second positioning block 200 can be improved, and at the same time, it can also ensure that the positioning steel frame 300 can be effectively placed on the support ball 250.

[0060] In one embodiment, each second positioning block 200 has at least two support plates 230, wherein the two support plates 230 are spaced apart on the positioning base plate 220, and the receiving member 240 is located between the two support plates 230. By providing at least two support plates 230, the reliability of supporting the positioning top plate 210 can be improved, and installation space can be provided for the receiving member 240.

[0061] See Figure 3 In one embodiment, the second positioning block 200 is further provided with a guide 260, which is disposed on the positioning base plate 220. The cross-sectional dimension of the guide 260 tends to decrease along the upward direction, so that a guide slope 262 is formed on the guide 260. This allows the positioning steel frame 300 to be effectively positioned above the positioning top plate 210 via the guide slope 262, achieving coarse positioning of the positioning steel frame 300. When the positioning steel frame 300 is located on the positioning top plate 210, there is an adjustable gap between the positioning steel frame 300 and the guide slope 262.

[0062] In one embodiment, the positioning device 10 further includes multiple adjusting members (not shown), which are spaced apart on the positioning base plate 220. These adjusting members are used to adjust the elevation of various positions of the second positioning block 200, so that the flatness and elevation of the positioning top plate 210 meet design requirements. In this embodiment, the adjusting member can be an adjusting bolt, which adjusts the elevation of corresponding positions of the second positioning block 200 by turning it. In other embodiments, the adjusting member can be any other component capable of adjusting the elevation of various positions of the second positioning block 200.

[0063] See Figure 2In one embodiment, the positioning device 10 further includes splicing components, the number of which matches the number of the first positioning blocks 100. Each first positioning block 100 is fixedly connected to the positioning steel frame 300 via a splicing component. The splicing components facilitate the connection between the first positioning blocks 100 and the positioning steel frame 300. Specifically, the splicing component can be a splicing plate, with both ends connected to the first positioning blocks 100 and the positioning steel frame 300 respectively via bolts or welding. In other embodiments, the splicing component can also be of other structural forms, as long as it enables the connection between the first positioning blocks 100 and the positioning steel frame 300. Since the positioning steel frame 300 is placed after the second positioning block 200, its position can be finely adjusted; therefore, the adjustable gap between the first positioning blocks 100 and the positioning steel frame 300 can be 2mm-10mm.

[0064] See Figure 1 , Figure 2 and Figure 6 In one embodiment, one cable tower corresponds to two tower columns, and each tower column is provided with a positioning steel frame 300. The positioning steel frames 300 of the two tower columns are spaced apart, and the installation accuracy between the two positioning steel frames 300 affects the construction quality of the entire cable tower. In this embodiment, each positioning steel frame 300 is provided with four second positioning blocks 200.

[0065] In one embodiment, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, a positioning construction method for the steel shell of a cable tower is provided. When this method is applied to the positioning device 10 in any of the above embodiments, the positioning construction method includes the following steps:

[0066] Step S1: Cast multiple spaced first concrete supports 20 and multiple spaced second concrete supports 30 on the foundation, and pre-embed steel bases on each of the first concrete supports 20 and each of the second concrete supports 30; wherein each of the first concrete supports 20 encloses an installation space, and each of the second concrete supports 30 is located within the installation space.

[0067] Specifically, during construction, before the third pour of the foundation, the installation and positioning of the pre-embedded reinforcing bars for the tower are completed. A steel base is then positioned and welded onto the pre-embedded reinforcing bars, followed by the pouring of the first concrete support pier 20 and the second concrete support pier 30, so that part of the steel base is exposed outside the concrete support pier. The positioning of the steel base is completed using a total station and polar coordinate method with the densely arranged forced observation control points already deployed on the tower column foundation. In this embodiment, four densely arranged forced pier control points are used to complete the positioning of the pre-embedded section. Considering that the steel structure is significantly affected by temperature deformation, the construction positioning of the steel base is selected during the nighttime period when the temperature is relatively stable.

[0068] In this embodiment, a third concrete support is formed between two adjacent second concrete supports 30. The third concrete support has a steel base embedded in it to support the positioning steel frame 300 and improve the stability of the positioning steel frame 300.

[0069] Step S2: After each first concrete support 20 reaches the design strength, the corresponding first positioning block 100 is hoisted into place according to the design plane position, and the elevation of the first positioning block 100 is vertically adjusted according to the design elevation; each first positioning block 100 is fixedly connected to the steel base on the corresponding first concrete support 20; wherein each first positioning block 100 forms an installation space.

[0070] Specifically, after the first concrete support 20 reaches its design strength, the first positioning block 100 is hoisted and adjusted into place according to the design plan position. The elevation of each feature point of the first positioning block 100 is vertically adjusted according to the design elevation until the requirements are met. Then, the first positioning block 100 is fixedly connected to the steel base. In this embodiment, multiple first positioning holes are opened at the bottom of the first positioning block 100. The elevation of the first positioning block 100 is adjusted by screwing adjusting screws into these holes. For example, multiple first positioning holes are spaced apart on the first positioning block 100. After the elevation adjustment is completed, the first positioning block 100 can be fixedly connected to the steel base by connecting with short-tailed groove rivets and / or by welding.

[0071] Step S3: After each second concrete support 30 reaches the design strength, the corresponding second positioning block 200 is hoisted into place according to the design plane position, and the elevation of the second positioning block 200 is vertically adjusted according to the design elevation; each second positioning block 200 is fixedly connected to the steel base of the corresponding second concrete support 30, wherein each second positioning block 200 is located within the installation space.

[0072] Specifically, after the second concrete support 30 reaches its design strength, the second positioning block 200 is hoisted and adjusted into place according to the design plan position. The elevation of each characteristic point of the second positioning block 200 is then vertically adjusted according to the design elevation until the requirements are met. Finally, the second positioning block 200 is fixedly connected to the steel base. In this embodiment, multiple spaced second positioning holes are provided on the positioning base plate 220 of the second positioning block 200. By adjusting the screws in the second positioning holes, the elevation of the second positioning block 200 at different positions can be adjusted, thereby achieving leveling of the second positioning block 200. After the elevation adjustment is completed, the second positioning block 200 and the steel base can be fixedly connected by short-tailed ring groove rivets and / or welding.

[0073] Step S4: Hoist the positioning steel frame 300 into the installation space and position it above the second positioning block 200, so that there is a movable gap between the positioning steel frame 300 and the second positioning block 200. This movable gap facilitates the movement of the positioning steel frame 300 relative to the second positioning block 200, thereby adjusting the position of the positioning steel frame 300.

[0074] Specifically, step S4 also includes:

[0075] The hoisting and positioning steel frame 300 is placed on the support ball 250 on the second positioning block 200 so that there is the aforementioned movable gap between the positioning steel frame 300 and the second positioning block 200;

[0076] Obtain the pressure data of the support balls 250 on each of the second positioning blocks 200;

[0077] Determine whether the pressure data of the supporting balls 250 on all second positioning blocks 200 are within the preset pressure range within the preset time range;

[0078] If not, readjust the hoisting elevation of each feature point on the positioning steel frame 300 until the pressure data of the support balls 250 on all the second positioning blocks 200 are within the preset pressure range within the preset time range.

[0079] Since the second positioning block 200 has been leveled and positioned according to the design, and to facilitate the adjustment of the positioning steel frame 300, there is a gap between the positioning steel frame 300 and the second positioning block 200. If the positioning steel frame 300 is not stable or tilted in the suspended state, it will inevitably affect the accuracy of the positioning steel frame 300's position adjustment. Therefore, support balls 250 are set on multiple second positioning blocks 200. Only when the pressure data of the support balls 250 on all second positioning blocks 200 are within the preset pressure range within a preset time range, it proves that the positioning steel frame 300 has been leveled or the tilt error is within the preset range relative to the second positioning block 200. At this time, leveling the positioning steel frame 300 can effectively ensure the accuracy of the planar position of the positioning steel frame 300.

[0080] In this embodiment, the preset time range can be 2s-30s, and the preset pressure range can be 1%-10% of the weight of the positioning steel frame 300. In other embodiments, the preset time range can also be determined based on the lowering speed of the positioning steel frame 300. If the pressure data collected on some of the support balls 250 is greater than the preset pressure range, it proves that the positioning steel frame 300 has not been leveled; if, within the preset time range, the pressure data collected on some of the support balls 250 is less than the preset pressure range, it also proves that the positioning steel frame 300 has not been leveled.

[0081] Furthermore, the step of readjusting the hoisting elevation of each feature point on the positioning steel frame 300 if at least some of the pressure data of the support balls 250 on all the second positioning blocks 200 are not within the preset pressure range also includes:

[0082] The pressure data of the support ball 250 is determined to be outside the position of the second positioning block 200 within the preset pressure range;

[0083] After adjusting the lifting mechanism relative to the position of the second positioning block 200 by the set distance for lowering or raising, continue to lower the positioning steel frame 300 as a whole, and repeatedly acquire the pressure data of the support balls 250 on each of the second positioning blocks 200. When the acquired pressure data of the support balls 250 on all the second positioning blocks 200 are within the preset pressure range within the preset time range, it proves that the leveling has been achieved.

[0084] In this embodiment, there are four second positioning blocks 200, and four hoisting mechanisms are respectively set at the locations corresponding to the second positioning blocks 200 to control the elevation of the positioning steel frame 300 at the corresponding positions, thereby achieving leveling of the positioning steel frame 300. For example, the hoisting mechanisms can be jacks, hydraulic telescopic components, etc.

[0085] Step S5: Detect the current actual coordinate position of the positioning steel frame 300, adjust the movement of the positioning steel frame 300 according to the target coordinate position until the current actual coordinate position matches the target position, and then lower the positioning steel frame 300 onto the second positioning block 200.

[0086] Specifically, step S5 includes:

[0087] The preset weight of the positioning steel frame 300 is controlled to be released onto the support ball 250, and the current actual coordinate position of the positioning steel frame 300 is detected. In this embodiment, the preset weight is less than the weight of the positioning steel frame 300, for example, it can be 1%-10% of the weight of the positioning steel frame 300.

[0088] Adjust the positioning steel frame 300 according to the target coordinate position until the current actual coordinate position matches the target position. Then, control the release of the entire weight of the positioning steel frame 300 onto the support ball 250 until the support ball 250 is completely pressed into the second positioning block 200 and the positioning steel frame 300 is completely placed on the second positioning block 200.

[0089] When the preset weight of the positioning steel frame 300 is released and applied to the support ball 250, the support ball 250 will not compress or deform the receiving member 240 of the second positioning block 200. The support weight improves the stability of the positioning steel frame 300 adjustment, preventing it from being suspended and causing it to sway, thus affecting the stability of the planar position adjustment. Simultaneously, the support ball 250 is rotatable, reducing the adjustment resistance of the positioning steel frame 300. When the full weight of the positioning steel frame 300 is applied to the support ball 250, it can be completely pressed into the receiving cavity of the receiving member 240, without affecting the stability of the positioning steel frame 300 set on the second positioning block 200, ensuring the installation accuracy of the positioning steel frame 300.

[0090] Step S6: Fix the positioning steel frame 300 to the second positioning block 200 and the first positioning block 100. Specifically, the positioning steel frame 300 can be connected to the second positioning block 200 and the first positioning block 100 by screws and / or by welding.

[0091] In another embodiment, when the positioning steel frame 300 is placed on the second positioning block 200, the third positioning block on the positioning steel frame 300 can be placed on the steel base of the third concrete support 40, further improving the reliability of the support for the positioning steel frame 300. Specifically, the steel base of the third concrete support 40 is provided with an adjustable support plate 230. When the positioning steel frame 300 is placed on the second positioning block 200, the height of the support plate 230 can be adjusted according to the gap between the third positioning block of the positioning steel frame 300 and the support plate 230 until the support plate 230 can abut against the positioning steel frame 300. For example, the height of the support plate 230 can be adjusted by turning the adjusting bolt.

[0092] In one embodiment, a cable tower is provided with two positioning steel frames 300, which are spaced apart. The installation accuracy between the two positioning steel frames 300 affects the overall construction quality of the cable tower. Specifically, the positioning construction method further includes:

[0093] Step S7: The two tower columns correspond to two spaced positioning steel frames 300, and the first positioning block 100 and the second positioning block 200 corresponding to the two positioning steel frames 300 are installed synchronously.

[0094] Step S8: Adjust the movement of the second positioning block 200 and simultaneously measure the elevation deviation of the second positioning blocks 200 corresponding to the two positioning steel frames 300 so that the elevation deviation is less than or equal to the preset elevation difference.

[0095] To ensure that the elevation deviation between the two positioning steel frames 300 after installation meets the preset requirements, the elevation deviation between any two second positioning blocks 200 of the two positioning steel frames 300 should be less than the preset elevation difference. In this embodiment, the preset elevation difference can be 1mm-4mm. For example, the preset elevation difference is 2mm.

[0096] Specifically, the movement of the second positioning block 200 is adjusted so that the deviation in the height direction between any two second positioning blocks 200 corresponding to each positioning steel frame 300 is less than or equal to a first preset difference. Further, the deviation in the height direction between the positioning top plates 210 of any two second positioning blocks 200 corresponding to each positioning steel frame 300 is less than or equal to the first preset difference, which is less than a preset elevation difference, to ensure the flatness of the two positioning steel frames 300.

[0097] Specifically, there are four second positioning blocks 200. The deviation of the positioning top plate 210 of any two of the four second positioning blocks 200 in the height direction is less than or equal to a first preset difference. For example, the first preset difference can be 1mm-2mm. In this embodiment, the first preset difference is 1.6mm to ensure the flatness of the positioning steel frame 300.

[0098] In this embodiment, as Figure 6 As shown, taking the example of each positioning steel frame 300 corresponding to four second positioning blocks 200, the four second positioning blocks 200 of the two positioning steel frames 300 are defined as blocks A, B, C, and D, and blocks A', B', C', and D' respectively. For example, the height deviation between any two of blocks A, B, C, and D is less than or equal to a first preset difference.

[0099] In one embodiment, blocks A, B, A', and B', as well as blocks C, D, C', and D', are located in the X direction, which is the direction from one positioning steel frame 300 to another positioning steel frame 300. Blocks A and D, B and C, A' and D', and B' and C' are located in the Y direction, which intersects the X direction. In this embodiment, the Y direction is perpendicular to the X direction.

[0100] In one embodiment, the movement of the second positioning block 200 is adjusted so that the deviation between any two second positioning blocks 200 in the X direction among all the second positioning blocks 200 corresponding to each positioning steel frame 300 is within a second preset difference range. Specifically, the second preset difference can be within a range of 2 mm. For example, in the X direction, the deviation between block A and block B, and between block C and block D is less than or equal to 2 mm; the deviation between block A' and block B', and between block C' and block D' is less than or equal to 2 mm. Further, the positional deviation of blocks A, B, C, and D in the X direction is controlled within ± the second target difference, and similarly, the positional deviation of blocks A', B', C', and D' in the X direction is controlled within ± the second target difference, wherein the second target difference is less than the second preset difference, for example, the second target difference can be 1.5 mm.

[0101] In one embodiment, the movement of the second positioning block 200 is adjusted so that the distance difference between two second positioning blocks 200 at the same position in the X direction corresponding to the two positioning steel frames 300 is less than or equal to a preset length value. For example, in this embodiment, L(BB') is the distance between block B and block B', L(CC') is the distance between block C and block C', and the distance difference between L(BB') and L(CC') is less than or equal to the preset length value. For example, the preset length value can be 3mm-10mm. In this embodiment, the preset length value can be 6mm.

[0102] In one embodiment, the movement of the second positioning block 200 is adjusted so that the deviation between any two second positioning blocks 200 in the Y direction corresponding to each positioning steel frame 300 is within a third preset difference range. For example, the third preset difference can be 3mm. That is, in the Y direction, the deviation between block A and block D, and between block C and block B is less than or equal to 3mm; the deviation between block A' and block D', and between block C' and block B' is less than or equal to 3mm. Further, the deviation between block A, block B, block C and block D in the Y direction is controlled within ±3 target difference, and similarly, the deviation between block A', block B', block C' and block D' in the Y direction is controlled within ±3 target difference. The third target difference is less than the third preset difference, for example, the third target difference can be 2.5mm.

[0103] Specifically, the movement of the second positioning block 200 is adjusted so that the two second positioning blocks 200 at the same position in the Y direction of the two positioning steel frames 300 deviate in different directions. For example, there should be no same-direction deviation between blocks B and B', and there should be no same-direction deviation between blocks C and C', to avoid excessive deflection of the tower to one side. Specifically, if the deviation of block B is +1.5mm, then the corresponding deviation of block B' should be -0.5mm.

[0104] Step S9: After placing one of the positioning steel frames 300 onto the corresponding second positioning block 200, measure the absolute coordinates of the reference points on the positioning steel frame 300. For example, at least three reference points on an already installed positioning steel frame 300 can be selected and their coordinates measured for subsequent correlation measurements of the other positioning steel frame 300. In this embodiment, four reference points can be selected on the positioning steel frame 300, and the positions of the four reference points can correspond to the positions of the four second positioning blocks 200 respectively.

[0105] Step S10: Determine the target coordinates of another positioning steel frame 300 based on the absolute coordinates of the reference point on one positioning steel frame 300;

[0106] Step S11: Hoist another positioning steel frame 300 according to the target coordinates and place it on its corresponding second positioning block 200. The position adjustment method of the other positioning steel frame 300 is the same as that of the first positioning steel frame 300. The positioning steel frame 300 is leveled by checking whether the pressure data of the support balls 250 on all the second positioning blocks 200 corresponding to the positioning steel frame 300 are within the preset pressure range within a preset time range. Then, adjust the movement of the positioning steel frame 300 according to the target coordinate position until the current actual coordinate position matches the target position. Then, control the release of the full weight of the positioning steel frame 300 until the support balls 250 are pressed into the second positioning block 200, and the positioning steel frame 300 is completely placed on the second positioning block 200.

[0107] Specifically, after adjusting and determining the position of the positioning steel frame 300, the calculation is performed such that the difference in interval between L(BB') and L(CC') of the two positioning steel frames 300 is less than or equal to a preset length value. For example, the preset length value can be 3mm-10mm, and in this embodiment, the preset length value is 6mm.

[0108] In one embodiment, step S10 further includes:

[0109] Let two positioning steel frames 300 be frame M and frame N respectively, such as Figure 6 As shown, the positioning steel frame 300 on the left can be designated as frame M, and the one on the right as frame N. Since frame M is installed and located within the foundation pit in a stable state, its temperature is relatively stable. Frame N, however, is suspended in mid-air and is therefore affected by wind cooling, solar radiation, or other factors during the hoisting process, potentially causing a temperature difference between frame N and frame M. When a temperature difference exists between frame M and frame N, the corrected coordinates of frame N need to be calculated based on the actual coordinates of frame M and the temperature difference to compensate for the relative deviation caused by thermal expansion and contraction.

[0110] Specifically, as can be seen from the above steps, the interval difference between the corresponding positions L(BB') and L(CC') of the two positioning steel frames 300 in the X direction should be less than or equal to the preset length value. Therefore, by obtaining the current temperature of frame M and frame N and the actual coordinates of frame M, the corrected X coordinate of frame N is obtained as follows:

[0111] ;

[0112] in, The actual coordinates of the installed frame M can be measured using a total station; The theoretical offset of frame N relative to frame M is the design spacing between frame N and frame M, which can be the theoretical spacing length of L(BB') or L(CC'). The coefficient of linear expansion of steel; Let N be the length of the frame itself in the X direction; The temperature difference between frame N and frame M. .

[0113] If the temperature of frame N is higher than that of frame M, frame N will elongate due to thermal expansion. When correcting, the target coordinates of frame N should be subtracted from the deformation amount. If the temperature of frame N is lower than that of frame M, frame N will shrink. When correcting, the target coordinates of frame N should be added to the deformation amount to avoid the distance between frame N and frame M in the X direction exceeding the allowable deviation after the temperature stabilizes.

[0114] Furthermore, since the deviation directions of the corresponding positions of the two positioning steel frames 300 in the Y direction are different, the corrected Y coordinate of frame N is obtained by acquiring the current temperature of frame M and frame N and the actual coordinate of frame M:

[0115] ;

[0116] in, The actual coordinates of the installed frame M; Let N be the theoretical offset of frame N relative to frame M in the Y direction; Let N be the length of the frame in the Y direction.

[0117] If the temperature of frame N is higher than that of frame M, frame N will elongate due to thermal expansion. The pre-offset has already been "reverse compensated" in advance. When correcting, the target coordinates of frame N need to be increased by the amount of deformation. If the temperature of frame N is lower than that of frame M, frame N will shrink. When correcting, the target coordinates of frame N need to be decreased by the amount of deformation to avoid the deviation from frame M in the Y direction exceeding the allowable deviation after the temperature stabilizes.

[0118] In one embodiment, the positioning construction method further includes:

[0119] During the adjustment of frame N's movement, the temperature is monitored in real time, and the coordinates of frame N are updated until the adjustment is complete.

[0120] After confirming that the coordinate deviation meets the standard, slowly release the hoisting load so that frame N is completely placed on the second positioning block 200;

[0121] When the temperature of frame N and frame M is found to be the same, the coordinates are measured again. After the coordinates of the two frames meet the requirements, frame N is fixedly connected to the corresponding first positioning block 100 and second positioning block 200.

[0122] The aforementioned positioning construction method is applied to the steel shell of the cable tower. The positioning steel frame 300 is ultimately doubly fixed to the first positioning block 100 and the second positioning block 200. Combined with external spatial constraints and internal support positioning, a stable structural system is formed, which can effectively resist load disturbances and temperature deformations during construction, ensuring long-term installation accuracy. At the same time, the phased construction process allows for independent inspection and correction of each step, reducing construction complexity, facilitating on-site quality control, reducing rework risks, and improving construction efficiency.

[0123] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0124] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0125] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0126] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for positioning and constructing a steel shell for a cable tower, characterized in that, The positioning construction method includes: After each first concrete support reaches its design strength, the corresponding first positioning block is hoisted into place according to the design plan position, and the elevation of the first positioning block is vertically adjusted according to the design elevation; each first positioning block is fixedly connected to the steel base on the corresponding first concrete support; wherein each first positioning block forms an installation space. After each second concrete support reaches its design strength, the corresponding second positioning block is hoisted into place according to the design plan position, and the elevation of the second positioning block is vertically adjusted according to the design elevation; each second positioning block is fixedly connected to the steel base of the corresponding second concrete support, wherein each second positioning block is located within the installation space. The positioning steel frame is hoisted into the installation space and positioned on the support ball on the second positioning block, so that there is a movable gap between the positioning steel frame and the second positioning block; Obtain the pressure data of the support balls on each of the second positioning blocks; Determine whether the pressure data of the supporting balls on all the second positioning blocks are within the preset pressure range within the preset time range; If not, readjust the hoisting elevation of each feature point on the positioning steel frame to determine the position of the second positioning block where the pressure data of the support ball is not within the preset pressure range; After adjusting the lifting mechanism relative to the position of the second positioning block by a set distance for lowering or raising, continue to lower the positioning steel frame as a whole, and repeatedly acquire the pressure data of the support balls on each second positioning block until the pressure data of the support balls on all the second positioning blocks are within the preset pressure range within the preset time range. The current actual coordinate position of the positioning steel frame is detected. The positioning steel frame is moved according to the target coordinate position until the current actual coordinate position matches the target position. Then, the positioning steel frame is lowered onto the second positioning block. The positioning steel frame is fixedly connected to the second positioning block and the first positioning block.

2. The positioning construction method according to claim 1, characterized in that, The positioning construction method also includes: Two tower columns correspond to two spaced positioning steel frames, and the first positioning block and the second positioning block corresponding to the two positioning steel frames are installed synchronously; the movement of the second positioning block is adjusted, and the elevation deviation of the second positioning block corresponding to the two positioning steel frames is measured so that the elevation deviation is less than or equal to the preset elevation difference. After placing one of the positioning steel frames onto the corresponding second positioning block, measure the absolute coordinates of the reference point on the positioning steel frame. Based on the absolute coordinates of this reference point, determine the target coordinates of another positioning steel frame; According to the target coordinates, hoist another positioning steel frame and place it on the corresponding second positioning block.

3. The positioning construction method according to claim 1, characterized in that, The preset time range is 2s-30s, and the preset pressure range is 1%-10% of the weight of the positioning steel frame.

4. The positioning construction method according to any one of claims 1-3, characterized in that, The process of detecting and positioning the steel frame's current actual coordinate position, adjusting the steel frame's movement according to the target coordinate position until the current actual coordinate position matches the target position, and then lowering the steel frame onto the second positioning block includes: Control the release of the preset weight of the positioning steel frame onto the support ball, and detect the current actual coordinate position of the positioning steel frame; wherein, the preset weight is less than the weight of the positioning steel frame; Adjust the positioning steel frame according to the target coordinate position until the current actual coordinate position matches the target position. Then, control the release of the entire weight of the positioning steel frame onto the support ball until the support ball is completely pressed into the second positioning block, and place the positioning steel frame on the second positioning block.

5. The positioning construction method according to claim 2, characterized in that, The first positioning block and the second positioning block, corresponding to the two positioning steel frames, are installed simultaneously, followed by: Adjust the movement of the second positioning block so that the deviation between any two second positioning blocks in the X direction of each positioning steel frame is within a second preset difference range; so that the distance difference between two second positioning blocks at the same position in the X direction between the two positioning steel frames is less than or equal to a preset length value; wherein, the X direction is the direction from one positioning steel frame to another positioning steel frame. And / or adjust the movement of the second positioning block so that the deviation of any two second positioning blocks in the Y direction corresponding to each positioning steel frame is within the range of a third preset difference value; so that the deviation directions of two second positioning blocks at the same position in the Y direction corresponding to the two positioning steel frames are different; wherein, the Y direction is the direction intersecting with the X direction.

6. The positioning construction method according to claim 2, characterized in that, The elevation deviation between the second positioning blocks corresponding to the two positioning steel frames is less than or equal to the preset elevation difference. The preset elevation difference being less than the target elevation deviation also includes: Adjust the movement of the second positioning block so that the deviation in the height direction between any two second positioning blocks corresponding to each positioning steel frame is less than or equal to the first preset difference.

7. A positioning device for the steel shell of a cable tower, installed using the positioning construction method as described in any one of claims 1-6, characterized in that, The positioning device includes: Multiple first positioning blocks, each of which is used to fix itself on the steel base of the corresponding first concrete support, and the first positioning blocks together form an installation space. Multiple second positioning blocks are spaced apart in the installation space, and each second positioning block is used to fix itself on the steel base of the corresponding second concrete support. The first positioning block is fixedly connected to the side wall of the positioning steel frame, and the second positioning block is fixedly connected to the bottom of the positioning steel frame.

8. The positioning device according to claim 7, characterized in that, The second positioning block includes a positioning top plate, a positioning bottom plate, a support plate, and a receiving component. The support plate stands on the positioning bottom plate, and the positioning top plate is located on the side of the support plate facing away from the positioning bottom plate. The positioning steel frame is located on the positioning top plate. The positioning top plate has a movable hole, and the receiving component has a receiving cavity formed inside. The receiving component is located on the side of the positioning top plate facing the support plate so that the receiving cavity communicates with the movable hole. The positioning device also includes a support ball, which is rotatably disposed in the receiving cavity so that a portion of the support ball protrudes from the movable hole. A pressure sensor is provided on the support ball, and the support ball can be pressed into the receiving cavity under force.

9. The positioning device according to claim 8, characterized in that, The positioning steel frame has a mating plate on its bottom opposite to the second positioning block, and the mating plate can be placed on the positioning top plate; each second positioning block has at least two support plates, wherein two support plates are spaced apart on the positioning bottom plate, and the receiving member is located between the two support plates; and / or The positioning device also includes splicing components, the number of which is consistent with the number of the first positioning blocks, and each of the first positioning blocks is fixedly connected to the positioning steel frame through one of the splicing components.

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