Construction control method for steel-concrete tower column and cable tower steel shell assembly

Abstract

The application relates to a steel-concrete tower column construction control method and a cable tower steel shell assembly. The cable tower steel shell assembly comprises multiple steel shell segments and multiple sets of matching parts. A lower steel shell segment is used as a reference for pre-assembly, manufacturing errors are found and corrected in time, and cumulative deviations during on-site installation are reduced. The matching parts are installed at the splicing position. The steel shell segments are transported to the site after pre-assembly and matching part installation are completed in the factory, and rapid positioning between the steel shell segments is realized through physical constraints of the matching parts. The rigid constraints of the matching parts further limit the displacement of the upper and lower steel shell segments during welding. Meanwhile, the splicing position of the next steel shell segment is adjusted in real time according to the deviation, the splicing position can be corrected in time, and the construction precision of the steel-concrete tower column is ensured. The pre-assembly and on-site hoisting construction of the above construction control method can be carried out synchronously, and the pre-assembly and timely correction of the splicing position according to the deviation can reduce the rework caused by installation errors.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction, in particular to a steel-concrete tower column construction control method and a cable tower steel shell assembly. BACKGROUND

[0002] To meet the demand of bridge construction for span and height, the height of cable towers continues to increase, and the structural form becomes more diverse. Among them, steel towers are widely used in bridge tower pier structures due to their light weight and good seismic performance. However, the construction of steel towers adopts a segmented hoisting mode, which is prone to accumulate errors in large segments due to the high installation height and the large number of hoisting segments of ultra-high steel towers, and thus requires high precision for positioning measurement.

[0003] In the prior art, patent application CN119720324A discloses a bridge tower segment posture intelligent prediction method and system based on multi-point cooperative positioning, which observes the space coordinates of the observation points by cooperating multiple total stations, predicts the posture of the to-be-installed segment by combining the rigid body transformation model, and displays the segment state by using BIM modeling. Although the erection precision and construction efficiency are improved, the installation and construction method of the cable tower steel shell is not described, and the precision cannot be improved and the construction complexity cannot be reduced by optimizing the installation process. Patent application CN117308898A discloses a fast measurement and control method for offshore ultra-high steel tower segmented hoisting, which uses a total station to vertically project points to measure the reference, and uses a laser beam line to realize daytime preliminary positioning and nighttime convenient adjustment. Although the measurement precision and construction efficiency are improved, the specific installation and construction scheme of the cable tower steel shell is not involved. Patent application CN118958165A discloses a method for constructing a steel frame of a bridge cable tower, which splits the frame segments, pre-assembles them in a factory, and tests whether the interfaces of each sub-segment meet the requirements in sequence, thereby reducing the on-site processing workload and improving the construction efficiency. However, the construction method that meets the high installation precision requirement of ultra-high steel cable towers is not provided.

[0004] In summary, although the current technology has improved in terms of measurement precision and processing efficiency, it still lacks a construction scheme that can adapt to the high installation precision requirement of ultra-high steel cable towers and reduce the construction complexity. SUMMARY

[0005] Therefore, it is necessary to provide a steel-concrete tower column construction control method and a cable tower steel shell assembly to solve the above problems.

[0006] A steel-concrete tower column construction control method, the construction control method comprising:

[0007] Step S1: In two adjacent steel shell segments, the lower steel shell segment is used as the reference for the upper steel shell segment, the steel shell segment to be tested is hoisted to the lower reference steel shell segment for pre-assembly, and inspection is performed.

[0008] Step S2: after the inspection, two matching parts in each group are respectively installed at the splicing position of the two steel shell segments;

[0009] Step S3: the steel shell segment after the inspection is transported to the construction site, and the steel shell segment is hoisted and spliced and assembled;

[0010] Step S4: detecting whether there is a deviation between the actual position size and the design position size of the completed steel shell segment;

[0011] Step S5: if yes, the splicing position of the next steel shell segment is adjusted according to the deviation to correct the construction position of the steel-concrete tower column.

[0012] In one embodiment, the step S1 further comprises:

[0013] The alignment axis is drawn on the outer wall of each steel shell segment, and the deviation of the alignment axis from the geometric center line of the outer wall surface of the steel shell segment is controlled to be less than or equal to a preset value;

[0014] The steel shell segment to be tested is pre-assembled with the reference steel shell segment below, and the horizontal position of the steel shell segment to be tested relative to the reference steel shell segment is adjusted according to the alignment axis, so that the alignment accuracy of the alignment axes of the upper and lower steel shell segments is within a preset accuracy range;

[0015] The step S2 further comprises:

[0016] The two matching parts arranged in groups are respectively installed at the joints of the upper and lower steel shell segments;

[0017] The two matching parts in each group are separated and hoisted away from the steel shell segment above;

[0018] The coordinate position of the matching part on the steel shell segment is measured and recorded.

[0019] In one embodiment, for the first steel shell segment, i.e. the T0 steel shell segment, the positioning steel frame is pre-assembled with the T0 steel shell segment, and the relative position of the T0 steel shell segment is adjusted according to the centering point coordinates on the positioning steel frame and the T0 steel shell segment;

[0020] The T1 steel shell segment is pre-assembled on the T0 steel shell segment, and the relative position of the T1 steel shell segment is adjusted according to the alignment axis.

[0021] In one embodiment, the step S5 further comprises:

[0022] According to the deviation value, an adjusting block corresponding to the deviation value is matched;

[0023] The adjusting block is installed in the first positioning groove of the lower steel shell segment which has been constructed;

[0024] The steel shell segment located above is hoisted to the upper side of the constructed steel shell segment, and the steel shell segment is lowered according to the position of the adjusting block until the adjusting block is further inserted into the second positioning groove in the bottom wall of the steel shell segment located above.

[0025] In one of the embodiments, a plurality of matching pieces are installed on the outer wall of the steel shell segment, a plurality of first positioning grooves are arranged at intervals on the top wall of the steel shell segment, a plurality of second positioning grooves are arranged at intervals on the bottom wall of the steel shell segment, the positions of the first positioning grooves correspond to the positions of the second positioning grooves one by one, and the position of each first positioning groove corresponds to the position of a matching piece;

[0026] The matching of the other adjusting blocks according to the deviation value includes:

[0027] The matching piece at the corresponding position of the steel shell segment is selected as the alignment point, a standard adjusting block is placed into the first positioning groove corresponding to the position of the matching piece, the deviation value of the constructed steel shell segment is calculated according to the position of the matching piece, and the other adjusting blocks corresponding to the deviation value are matched according to the deviation value.

[0028] The steel shell segment located above is hoisted to the upper side of the constructed steel shell segment, and the upper and lower steel shell segments are coarsely positioned through the matching piece of the alignment point.

[0029] In one of the embodiments, a plug-in block is arranged in the second positioning groove.

[0030] The matching of the other adjusting blocks according to the deviation value includes:

[0031] The actual coordinates of the constructed steel shell segment measured are compared with the theoretically designed coordinates to obtain the flatness deviation and the torsion deviation of the constructed steel shell segment.

[0032] The actual opening depth of the butt joint groove on the adjusting block is calculated according to the flatness deviation to compensate for the flatness deviation.

[0033] The actual opening position of the butt joint groove on the adjusting block is calculated according to the torsion deviation to compensate for the torsion deviation.

[0034] The butt joint groove is arranged on the adjusting block according to the actual opening depth and the actual opening position.

[0035] The lowering of the steel shell segment according to the position of the adjusting block until the adjusting block is further inserted into the second positioning groove in the bottom wall of the steel shell segment located above includes:

[0036] When the steel shell segment located above is lowered, the adjusting block is inserted into the second positioning groove in the steel shell segment located above, and the plug-in block in the second positioning groove is inserted into the butt joint groove of the adjusting block.

[0037] In one embodiment, the step S3 is followed by:

[0038] After the two steel shell segments are connected, the concrete is poured;

[0039] When the pouring surface of the concrete is raised to a set layer height, the pouring of the concrete is stopped after the first time interval, and then resumed;

[0040] After the pouring of the upper layer of concrete is completed, the vibrating equipment is inserted into the adjacent lower layer of concrete by 5-10 cm for vibration to promote the fusion of the two layers of concrete;

[0041] After the pouring of the top layer of concrete is completed, the top layer of concrete is secondarily vibrated after the second time interval.

[0042] In one embodiment, the steel-concrete tower construction control method further comprises:

[0043] After the same steel shell segments of the two steel-concrete towers are completed, the construction of the next steel shell segment is performed;

[0044] The actual coordinate dimensions of the constructed steel shell segments of the two steel-concrete towers are synchronously measured, and the current elevation deviation and spacing deviation of the two steel-concrete towers are obtained;

[0045] The splicing position of the next steel shell segment of each steel-concrete tower is adjusted according to the current elevation deviation and spacing deviation to correct the current elevation deviation and spacing deviation.

[0046] The above steel-concrete tower construction control method has at least the following beneficial effects compared with the prior art:

[0047] The lower steel shell segment is used as a reference for pre-assembly, manufacturing errors are found and corrected in the pre-assembly process, cumulative deviations during on-site installation are reduced, and effective matching between steel shell segments is ensured. The matching piece is installed at the splicing position, the steel shell segment is transported to the site after pre-assembly and installation of the matching piece in the factory, and rapid positioning between steel shell segments can be achieved through the physical constraint of the matching piece, reducing repeated measurement and calibration on the construction site and reducing high-altitude operation time. The rigid constraint of the matching piece further limits the displacement of the upper and lower steel shell segments during welding. At the same time, the splicing position of the next steel shell segment is adjusted in real time according to the deviation, which can correct the splicing position in time and ensure the construction accuracy of the steel-concrete tower. The pre-assembly and on-site hoisting construction of the above construction control method can be performed synchronously, and the pre-assembly and timely correction of the splicing position according to the deviation can reduce the rework caused by installation errors, which can significantly shorten the construction period.

[0048] A cable tower steel shell assembly applied to the steel-concrete tower column construction control method as described above, the cable tower steel shell assembly comprises a plurality of steel shell segments and a plurality of sets of matching pieces, and the upper and lower steel shell segments can be spliced together in position; the plurality of sets of matching pieces are arranged at intervals around the circumference of the steel shell segment, and two matching pieces are arranged in each set, and the two matching pieces in each set are respectively installed at the joints of the two adjacent steel shell segments.

[0049] In one of the embodiments, the cable tower steel shell assembly further comprises an adjusting block, the upper surface of the steel shell segment is formed with a first positioning groove, the lower surface of the steel shell segment is formed with a second positioning groove, the size of the adjusting block is obtained according to the position deviation of the lower steel shell segment which has been constructed, the bottom of the adjusting block can be installed in the first positioning groove, when the upper steel shell segment is placed on the lower steel shell segment, the adjusting block is inserted into the second positioning groove of the upper steel shell segment, so as to correct the position of the upper steel shell segment.

[0050] In one of the embodiments, the bottom wall of the adjusting block is provided with a positioning pin, the bottom wall of the first positioning groove is provided with a positioning hole, and the positioning pin can be inserted into the positioning hole; the second positioning groove is provided with a plug-in block, and the plug-in block is a tapered body, the cross-sectional size of the plug-in block gradually decreases in the downward direction; the top wall of the adjusting block is provided with an opening position mark, the actual opening position of the butt joint groove is determined according to the position deviation of the constructed steel shell segment, the butt joint groove is opened according to the position deviation, and the shape of the butt joint groove is a tapered groove matched with the shape of the plug-in block, when the adjusting block is inserted into the second positioning groove of the upper steel shell segment, the plug-in block is inserted into the butt joint groove. BRIEF DESCRIPTION OF DRAWINGS

[0051] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The accompanying drawings should not be regarded as a limitation of the present application.

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0053] In addition, the drawings are not drawn in a 1:1 ratio, and the relative sizes of the various elements are only exemplarily drawn in the drawings, but not necessarily drawn in true proportions.

[0054] Figure 1 The structural schematic diagram of the cable tower steel shell assembly in an embodiment.

[0055] Figure 2 Structure diagram of a set of matching parts in an embodiment.

[0056] Figure 3 Structure diagram of a steel shell segment and matching parts in an embodiment.

[0057] Figure 4 Structure diagram of a steel shell segment and matching parts in an embodiment. Figure 3 Enlarged view of A in FIG.

[0058] Figure 5 Structure diagram of a steel shell segment and matching parts in an embodiment. Figure 3 Structure diagram of a steel shell segment and matching parts in an embodiment.

[0059] Figure 6 Structure diagram of a steel shell segment and matching parts in an embodiment. Figure 5 Enlarged view of B in FIG.

[0060] Figure 7 Partial sectional view of a cable tower steel shell assembly in an embodiment.

[0061] Figure 8 Structure diagram of an adjusting block in an embodiment. Figure 7

[0062] Flow chart of a steel-concrete column construction control method in an embodiment. Figure 9

[0063] Flow chart of a steel-concrete column construction control method in another embodiment. Figure 10 BRIEF DESCRIPTION OF DRAWINGS

[0064] Cable tower steel shell assembly 10; steel shell segment 100; alignment axis 102; first positioning slot 110; second positioning slot 120; positioning hole 130; plug-in block 140; matching part 200; alignment plate 210; matching hole 212; mounting plate 220; adjusting block 300; positioning pin 310; abutting slot 320.

[0065] DETAILED DESCRIPTION

[0066] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways other than those specifically described herein, and the present application is not limited to the embodiments described herein as long as they do not depart from the spirit of the present application.

[0067] Reference is made to Figures 1 to 3 ​In an embodiment of the present application, the cable tower steel shell assembly 10 includes a plurality of steel shell segments 100 and a plurality of matching parts 200. The upper and lower steel shell segments 100 can be aligned and spliced together. The plurality of matching parts 200 are arranged in a circumferential direction of the steel shell segment 100. Each group of matching parts 200 includes two matching parts 200. The two matching parts 200 in each group are respectively arranged at the joint of the adjacent steel shell segments 100. In construction, the steel shell segments 100 are processed in the factory and pre-spliced in the factory. Then, the matching parts 200 are arranged on the steel shell segments 100. The two matching parts 200 in each group are respectively arranged at the joint of the adjacent steel shell segments 100, thereby forming a point-to-point positioning relationship. Because the two matching parts 200 in each group are accurately aligned at the joint, the upper steel shell segment 100 can be coarsely positioned by the alignment between the two matching parts 200 in the field splicing, thereby improving the positioning efficiency. In the positioning process, the position of the steel shell segment 100 does not need to be repeatedly adjusted, thereby reducing the joint misalignment caused by the traditional process relying on visual positioning or single reference positioning. In addition, the plurality of matching parts 200 are arranged in the circumferential direction of the steel shell segment 100, thereby covering the entire joint circumference of the steel shell segment 100.

[0068] Specifically, the matching part 200 includes an alignment plate 210 and a mounting plate 220. The alignment plate 210 is arranged on the mounting plate 220. The mounting plate 220 is arranged on the outer wall of the steel shell segment 100, so that the alignment plate 210 is aligned with the joint surface of the steel shell segment 100. The alignment plate 210 is provided with a matching hole 212. The matching holes 212 of the alignment plates 210 of the two matching parts 200 in each group are aligned and communicated.

[0069] In the embodiment, four groups of matching parts 200 are arranged at the joint of the upper and lower steel shell segments 100. In other embodiments, three groups, six groups or other numbers of groups of matching parts 200 can be arranged at the joint of the upper and lower steel shell segments 100 according to the shape of the steel shell segment 100.

[0070] Referring to Figures 3 to 8 In an embodiment, the cable tower steel shell assembly 10 further includes an adjusting block 300. The upper surface of the steel shell segment 100 is provided with a first positioning groove 110. The lower surface of the steel shell segment 100 is provided with a second positioning groove 120. The size of the adjusting block 300 is obtained according to the position deviation of the lower steel shell segment 100 which has been constructed. The bottom of the adjusting block 300 can be arranged in the first positioning groove 110. When the upper steel shell segment 100 is placed on the lower steel shell segment 100, the adjusting block 300 is inserted into the second positioning groove 120 of the upper steel shell segment 100, so as to correct the position of the upper steel shell segment 100.

[0071] The lower steel shell segment 100 may generate flatness deviation and torsion deviation due to concrete pouring. If not corrected, the deviation will be transmitted to the upper steel shell segment 100, eventually leading to the overall geometric shape of the pylon exceeding the standard. The size of the adjusting block 300 is completely customized based on the measured deviation data of the lower constructed steel shell segment 100, ensuring that each adjusting block 300 can accurately fill the deviation. On the one hand, the adjusting block 300 is pre-installed in the first positioning groove 110 of the lower steel shell segment 100 for positioning. When the upper steel shell segment 100 is lowered, it only needs to align the second positioning groove 120 with the adjusting block 300 to complete the preliminary alignment, without relying entirely on instruments such as total stations for repeated calibration. The adjusting block 300 is guided and fitted with the second positioning groove 120, so that the upper steel shell segment 100 can naturally slide into the corrected position and naturally return to the designed coordinate position. On the other hand, for different types of deviations generated by the lower steel shell segment 100, the adjusting block 300 can compensate through single-dimensional or multi-dimensional size adjustment. For example, if only flatness deviation needs to be compensated, only the thickness of the adjusting block 300 needs to be adjusted; if torsion deviation needs to be compensated, the position and installation angle of the adjusting block 300 can be adjusted, without the need for additional correction components or changes to the overall frame structure of the steel shell segment 100, which has strong versatility and high flexibility. On the other hand, since part of the adjusting block 300 protrudes into the upper steel shell segment 100 and part of it is located in the lower steel shell segment 100, the bottom of the adjusting block 300 is tightly fitted with the first positioning groove 110 and the top is tightly fitted with the second positioning groove 120, which can effectively transmit the load. During hoisting, the self-weight of the upper steel shell segment 100 is evenly transmitted to the lower steel shell segment 100 through the adjusting block 300; during operation, the adjusting block 300 can assist in transmitting horizontal wind load and seismic load, enhancing the overall stiffness of the pylon and ensuring the stability of the deviation compensation.

[0072] By setting the adjusting block 300, the alignment error of each steel shell segment 100 is controlled within a predetermined range, ultimately ensuring that the key indicators such as the axis deviation and perpendicularity of the entire pylon meet the specifications. At the same time, in cooperation with the matching piece 200, the matching piece 200 is used to achieve the circumferential rough positioning of the upper and lower steel shell segments 100, and the adjusting block 300 is used to achieve accurate deviation compensation and correct flatness and torsion. The two work together to effectively improve the overall installation efficiency.

[0073] Referring to Figure 7 and Figure 8In an embodiment, the bottom wall of the adjusting block 300 is provided with a positioning pin 310, the bottom wall of the first positioning groove 110 is provided with a positioning hole 130, and the positioning pin 310 can be inserted into the positioning hole 130. The second positioning groove 120 is provided with a plug-in block 140, and the plug-in block 140 is a tapered body, and the cross-sectional size of the plug-in block 140 gradually decreases in the downward direction. The top wall of the adjusting block 300 is provided with an opening position mark, the actual opening position of the butt joint groove 320 is determined according to the position deviation of the constructed steel shell segment 100, the butt joint groove 320 is opened according to the position deviation, and the shape of the butt joint groove 320 is a tapered groove matched with the shape of the plug-in block 140. When the adjusting block 300 is inserted into the second positioning groove 120 of the upper steel shell segment 100, the plug-in block 140 is inserted into the butt joint groove 320. Specifically, the positioning pin 310 is vertically arranged on the bottom wall of the adjusting block 300, and the positioning hole 130 is correspondingly arranged on the bottom wall of the first positioning groove 110. Only the positioning pin 310 needs to be aligned with the positioning hole 130 and inserted, and the precise positioning of the adjusting block 300 can be completed, without the need for additional calibration, which can effectively limit the lateral freedom of the adjusting block 300, resist construction disturbance, and ensure that the position of the adjusting block 300 does not change when the subsequent upper steel shell segment 100 is butt jointed.

[0074] The traditional adjusting mode needs to be repeatedly fine-tuned, the upper steel shell segment 100 is suspended for a long time, and the safety risk is high. The plug-in block 140 with a tapered structure cooperates with the butt joint groove 320, is guided and contacted by the inclined surface, is constrained, and is caused to slide along the inclined surface under the action of the gravity of the upper steel shell segment 100, so that the plug-in block 140 is finally embedded into the butt joint groove 320, without the need for manual prying and adjusting, and the installation fault tolerance and butt joint stability are improved. For the torsional deviation, when the plug-in block 140 is inserted into the butt joint groove 320, the normal force of the tapered surface drives the upper steel shell segment 100 to twist to compensate for the deviation, and the tapered plug-in block 140 and the tapered surface of the butt joint groove 320 can forcibly correct the deviation. At the same time, the butt joint groove 320 on the top wall of the adjusting block 300 is not a standard hole, but a tapered groove with an opening position determined according to the actual position deviation of the lower constructed steel shell segment 100 and opened, and the precise compensation of the deviation can be realized. The traditional adjusting mode needs to be adjusted and compensated in multiple directions, and the opening design of the butt joint groove 320 can cope with the composite deviation. For example, the flatness deviation can be realized by controlling the depth of the butt joint groove 320, and the torsional deviation is compensated by the position of the butt joint groove 320, without the need to change the main structure of the adjusting block 300. Only the opening on the top wall realizes the multi-dimensional deviation compensation, and is suitable for complex deviation scenarios.

[0075] In an embodiment, the number of positioning pins 310 is two, the two positioning pins 310 are arranged at intervals, the number of positioning holes 130 is consistent with the number of positioning pins 310, and each positioning pin 310 is correspondingly inserted into a positioning hole 130.

[0076] In an embodiment, the cross-sectional dimension of the adjusting block 300 is gradually reduced from the first positioning slot 110 to the second positioning slot 120, and the dimension of the second positioning slot 120 is greater than that of the adjusting block 300. When the upper steel shell segment 100 is lowered, the adjusting block 300 can be effectively arranged in the second positioning slot 120, so that the alignment of the abutting slot 320 with the inserting block 140 is not affected by the alignment of the second positioning slot 120 and the adjusting block 300.

[0077] In the embodiment, the adjusting block 300 is a trapezoidal block, and the second positioning slot 120 is a square slot or a trapezoidal slot matching the shape of the adjusting block 300, as long as the adjusting block 300 can be stably arranged in the second positioning slot 120.

[0078] In an embodiment, a plurality of first positioning slots 110 are arranged on the top wall of the steel shell segment 100, and a plurality of second positioning slots 120 are arranged on the bottom wall of the steel shell segment 100. The positions of the first positioning slots 110 correspond to the positions of the second positioning slots 120 one by one. The position of each first positioning slot 110 corresponds to the position of a matching piece 200. An adjusting block 300 is arranged in each first positioning slot 110. The position and dimension of the abutting slot 320 on the adjusting block 300 in each first positioning slot 110 are set according to the position deviation of the corresponding position of the steel shell segment 100.

[0079] Referring to Figure 1 and Figure 9 , an embodiment of the present application also discloses a steel-concrete tower construction control method, which is implemented by using the cable tower steel shell assembly 10 in any of the above embodiments. Specifically, the construction control method comprises the following steps.

[0080] S1: In the two adjacent steel shell segments 100, the lower steel shell segment 100 is used as the reference of the upper steel shell segment 100. The steel shell segment 100 to be tested is hoisted to the lower reference steel shell segment 100 for pre-assembly and inspection.

[0081] Specifically, the step S1 further comprises the following steps.

[0082] The alignment axis 102 is drawn on the outer wall of each steel shell segment 100, and the deviation of the alignment axis 102 from the geometric center line of the outer wall of the steel shell segment 100 is controlled to be less than or equal to a preset value; for example, in the embodiment, the deviation of the alignment axis 102 from the top and bottom center lines of the steel shell segment 100 is less than or equal to ±1 mm.

[0083] Then the steel shell segment 100 to be tested is pre-assembled with the reference steel shell segment 100 located below, and the horizontal position of the steel shell segment 100 to be tested relative to the reference steel shell segment 100 is adjusted according to the alignment axis 102, so that the alignment accuracy of the alignment axes 102 of the upper and lower steel shell segments 100 is within the preset accuracy range. In this embodiment, the preset accuracy range can be within 1mm.

[0084] Further, when the steel shell segment 100 is pre-assembled, the cumulative accuracy management needs to be performed to avoid the cumulative deviation in the same direction. For example, when the steel shell segment 100 is aligned with the steel shell segment 100 below, the alignment deviation of the alignment axis 102 is +1mm, and then the alignment deviation of the alignment axis 102 of the steel shell segment 100 above the steel shell segment 100 should not be a positive deviation.

[0085] In an embodiment, for the first steel shell segment 100, i.e. the T0 steel shell segment 100, the positioning steel frame needs to be pre-assembled with the T0 steel shell segment 100, and the relative position of the T0 steel shell segment 100 is adjusted according to the centering point coordinates on the positioning steel frame and the T0 steel shell segment 100; then the T1 steel shell segment 100 is pre-assembled on the T0 steel shell segment 100, and the relative position of the T1 steel shell segment 100 is adjusted according to the alignment axis 102. For the pre-assembly of the first steel shell segment 100, the positioning steel frame, the T0 steel shell segment 100 and the T1 steel shell segment 100 need to be pre-assembled synchronously to improve the assembly positioning accuracy.

[0086] S2: After inspection, two matching parts 200 in each group are respectively installed at the joint positions of the two steel shell segments 100.

[0087] Specifically, the step S2 comprises:

[0088] The two matching parts 200 arranged in groups are respectively installed at the joints of the upper and lower steel shell segments 100;

[0089] The two matching parts 200 in each group are separated and lifted away from the steel shell segment 100 above;

[0090] The coordinate positions of the matching parts 200 on the steel shell segment 100 are measured and recorded.

[0091] By setting the matching parts 200 and according to the coordinate positions of the matching parts 200, the coarse positioning can be completed in the actual installation of the steel shell segment 100, thereby improving the installation efficiency and installation accuracy of the steel shell segment 100.

[0092] S3: The steel shell segment 100 after inspection is transported to the construction site, and the steel shell segment 100 is hoisted and assembled.

[0093] Specifically, for T0 steel shell segment 100, the positioning steel frame needs to be positioned and installed on the steel base of the concrete support pier of the foundation first.

[0094] After the positioning steel frame is completed, during the trial lifting of the T0 steel shell segment 100, measure the height difference of its four corners relative to the positioning steel frame. The height difference should be controlled within 1mm-5mm, and its level should be ensured during the lifting process. For example, the height difference should be controlled at 2mm.

[0095] Measure the position coordinates of the alignment axis 102 of the T0 steel shell segment 100. Based on the difference between the coordinates and the theoretical coordinates, guide the lowering of the T0 steel shell segment 100 to achieve the alignment and installation of the T0 steel shell segment 100 with the positioning steel frame. Then, fix the positioning steel frame and the T0 steel shell segment 100 together with rivets or bolts.

[0096] In one embodiment, after step S3, the method further includes:

[0097] After the two steel shell segments are connected by 100mm, concrete is poured.

[0098] When the concrete pouring surface rises to approximately the set layer height, stop the first time interval and then pour concrete again.

[0099] In this embodiment, the initial setting time is less than the initial setting time, such as not exceeding 60 minutes. During the pause in pouring, the concrete is in the plastic stage and has not lost its fluidity and binding properties. When pouring again, the new concrete can form a molecular-level bond with the already poured concrete, without obvious interface stratification. Layered control of the pouring height can reduce the instantaneous lateral pressure of the concrete on the steel shell segment 100, while facilitating quality control during the pouring process and improving the density of the concrete. On the other hand, the tower pouring is carried out at high altitude, with limited construction space and high difficulty in equipment coordination. By controlling the pouring in layers with short intervals, the safety and efficiency of the operation can be improved, adapting to the rhythm of high-altitude tower construction.

[0100] In this embodiment, the layer height is set to approximately 40cm. During the pouring process, the concrete pouring speed is adjusted based on the real-time feedback of the concrete liquid level from the laser rangefinder to ensure that the pouring surfaces are at approximately the same height.

[0101] Specifically, after stopping the first time interval and resuming concrete pouring when the concrete pouring surface rises to approximately the set layer height, the process further includes:

[0102] After the previous layer of concrete is poured, the vibrating equipment is inserted 5cm to 10cm into the adjacent next layer of concrete to vibrate and promote effective fusion of the two layers of concrete.

[0103] After the top layer of concrete is poured, it is vibrated a second time after the second time interval.

[0104] After the previous layer of concrete is poured, the vibrating rod of the vibrating device is inserted into the next layer by 5-10 cm. The high-frequency vibration generated by the vibrating causes the next layer of plastic concrete to flow again and fully mix with the cement paste of the new concrete of the previous layer, eliminating the interlayer air bubbles and interface gaps, while making the aggregate distribution uniform. The vibrating is performed in a "fast insertion and slow extraction" manner, and the vibrating time is about 20-30 s. When the concrete paste surface is smooth, without bubbles and paste overflow, the vibrating effect is optimal. At this time, the vibrating rod is slowly extracted, and the next point of vibration is continued. The secondary vibrating of the top layer of concrete can eliminate the water and voids generated under the coarse aggregate and horizontal steel bars due to water bleeding of the concrete, and improve the gripping force of the concrete and the steel bars. In the embodiment, the second time can be 0.5-1.0 h. The second time can be adjusted according to the factors such as the fluidity of the concrete and the ambient temperature.

[0105] In another embodiment, the pouring ages of the concretes of the two adjacent steel shell segments 100 are not more than 10 days apart.

[0106] In an embodiment, the steel shell segments 100 of the steel shell concrete composite tower are connected by welding. The concrete also shrinks, so the position or angle of the steel shell segments 100 may change after the on-site construction due to the above factors. If these changes are not adjusted on site, it is very likely that the error will exceed the allowed range. After the connection of the steel shell segments 100 is completed and the concrete pouring is completed, the geometric position of the steel shell segments 100 is measured. If the measurement result exceeds the limit or has a trend of exceeding the limit, adjustment is needed through the installation of the next steel shell segment 100 to obtain a steel-concrete tower column that meets the technical requirements.

[0107] S4: detecting whether there is a deviation between the actual position size and the designed position size of the steel shell segment 100 that is constructed.

[0108] Specifically, after the concrete in the lower steel shell segment 100 is poured and stabilized, a total station or other detection instrument is used to measure the upper surface of the steel shell segment 100 to measure the actual three-dimensional coordinates of each relative position of the upper surface to the matching part 200, and to evaluate the flatness and torsion angle of the lower steel shell segment 100.

[0109] S5: if there is a deviation, adjusting the splicing position of the next steel shell segment 100 according to the deviation to correct the construction position of the steel-concrete tower column.

[0110] In an embodiment, the step S5 includes:

[0111] If there is a flatness deviation, when installing the upper steel shell segment 100, a set of matching parts 200 is locked and connected, and the set of matching parts 200 is kept in a state of adhesion. Then, according to the flatness deviation, steel plates are filled at specified positions to adjust the height position of the upper steel shell segment 100. After adjustment, measurement is performed again, and when the accuracy requirement is met, the upper and lower steel shell segments 100 are connected.

[0112] Since the torsion error of the steel shell segment 100 will develop a larger deviation with the increase of the height, the torsion error needs to be adjusted to the range of the torsion angle allowed by the beam installation before the segment of the beam is installed. Therefore, if the steel shell segment 100 has a torsion overrun or has a risk of overrun, the upper steel shell segment 100 is hoisted, the matching parts 200 selected as the locking points and the matching parts 200 selected as the supporting points of the upper steel shell segment 100, the matching parts 200 at the locking points are punched into the connecting positioning, and the remaining matching parts 200 are not installed with the punch and the bolt; the counterforce frame is installed at the supporting point, and the displacement of the supporting point is responded according to the monitoring instruction; then, the position of the adjusted upper steel shell segment 100 is measured, and the effect of the torsion adjustment is evaluated; when the target position is reached, the matching parts 200 at other positions are connected, and the fixed connection of the upper and lower steel shell segments 100 is realized.

[0113] In this scheme, often many workers need to forcibly adjust the position of the steel shell segment 100 in the air through tools such as jacks and crowbars, which has a large labor intensity and is prone to cause poor correction effect due to operation deviation. The torsion position of the steel shell segment 100 is adjusted by the jack, the flatness of the steel shell segment 100 is adjusted by filling the steel plate, and the connection of the steel shell segment 100 is realized by welding. However, this way has poor connection stability and is prone to cause welding stress concentration due to the uneven gap between the upper and lower steel shell segments 100.

[0114] Referring to Figures 4 to 8 and Figure 10 In another embodiment of the present application, the step S5 further comprises:

[0115] S51: According to the deviation value, a matching adjustment block 300 corresponding to the deviation value is matched.

[0116] Specifically, the step S51 comprises:

[0117] The actual coordinates of the constructed steel shell segment 100 are compared with the theoretical design coordinates to obtain the flatness deviation and the torsion deviation of the constructed steel shell segment 100;

[0118] The actual opening depth of the butt joint groove 320 on the adjustment block 300 is calculated according to the flatness deviation to compensate for the flatness deviation;

[0119] The actual opening position of the butt joint groove 320 on the adjustment block 300 is calculated according to the torsion deviation to compensate for the torsion deviation;

[0120] According to the actual opening depth and the actual opening position, a butt joint groove 320 is formed on the adjusting block 300.

[0121] S52: The adjusting block 300 is installed in the first positioning groove 110 of the lower constructed steel shell section 100.

[0122] In the embodiment, the positioning pin 310 on the lower surface of the adjusting block 300 is inserted into the positioning hole 130 of the first positioning groove 110 of the constructed steel shell section 100, and the adjusting block 300 is installed in the first positioning groove 110 by the cooperation of the positioning pin 310 and the positioning hole 130. Then, it is checked whether the position of the butt joint groove 320 on the upper surface of the adjusting block 300 matches the flatness deviation and the torsion deviation; if yes, the adjusting block 300 is fixedly connected with the constructed steel shell section 100. If no, the position of the butt joint groove 320 is corrected, or the adjusting block 300 is replaced according to the flatness deviation and the torsion deviation.

[0123] Specifically, the adjusting block 300 is welded or fixed by bolts in the first positioning groove 110, so as to prevent the adjusting block 300 from moving during the installation of the upper steel shell section 100 and affecting the installation accuracy of the upper steel shell section 100.

[0124] S53: The upper steel shell section 100 is hoisted above the constructed steel shell section 100, and the steel shell section 100 is lowered according to the position of the adjusting block 300 until the adjusting block 300 is further inserted into the second positioning groove 120 of the bottom wall of the upper steel shell section 100. Specifically, when the upper steel shell section 100 is lowered, the adjusting block 300 is inserted into the second positioning groove 120 of the upper steel shell section 100, and the insertion block 140 is inserted into the butt joint groove 320 of the adjusting block 300.

[0125] The upper steel shell section 100 is hoisted, and the insertion block 140 in the second positioning groove 120 on the lower surface of the upper steel shell section 100 is slowly inserted into the butt joint groove 320 on the upper surface of the adjusting block 300. Under the action of gravity, the upper steel shell section 100 slides along the tapered structure of the butt joint groove 320 to the only correct position, and the deviation compensation and accurate positioning are automatically completed. Finally, the upper steel shell section 100 can be fixedly connected with the adjusting block 300, so as to improve the stability of the connection.

[0126] By acquiring the deviation data of the lower steel shell segment 100, the geometric deviation data is converted into the machining size of the butt joint groove 320 on the adjusting block 300, and the installation position of the upper steel shell segment 100 is adjusted and controlled by controlling the machining precision of the butt joint groove 320 to correct the deviation. The machining of the butt joint groove 320 is manufactured separately, and the structural size is much smaller than that of the steel shell segment 100, so the machining precision is easy to control. And the tapered structure of the butt joint groove 320 is matched with the plug-in block 140, which realizes the precise positioning of the upper steel shell segment 100, and facilitates the plug-in installation. The above construction method changes the complex and experience-dependent in-air adjustment work into the controllable measurement and factory processing work in the early stage, which effectively improves the construction precision and efficiency.

[0127] In an embodiment, a plurality of matching pieces 200 are installed on the outer wall of the steel shell segment 100, a plurality of first positioning grooves 110 are arranged on the top wall of the steel shell segment 100, a plurality of second positioning grooves 120 are arranged on the bottom wall of the steel shell segment 100, the positions of the first positioning grooves 110 correspond to the positions of the second positioning grooves 120 one by one, and the position of each first positioning groove 110 corresponds to the position of a matching piece 200. The step S51 further comprises:

[0128] A matching piece 200 at a corresponding position of the steel shell segment 100 is selected as a positioning point, and a standard adjusting block 300 is placed in the first positioning groove 110 corresponding to the position of the matching piece 200, the deviation value of the constructed steel shell segment 100 is calculated according to the position of the matching piece 200, and other adjusting blocks 300 corresponding to the deviation value are matched according to the deviation value.

[0129] The steel shell segment 100 located above is hoisted to the upper side of the constructed steel shell segment 100, and the upper and lower steel shell segments 100 are coarsely positioned through the matching piece 200 at the positioning point.

[0130] Specifically, after the steel shell segment 100 located above is completely placed on the constructed steel shell segment 100, the two matching pieces 200 in each group of the upper and lower steel shell segments 100 are fixed by bolts and then welded.

[0131] The matching piece 200 is fixed to the outer wall of the steel shell and corresponds to the first positioning groove 110 one by one, and the matching piece 200 at the corresponding position and the standard adjusting block 300 are selected as the alignment points, which are equivalent to providing a rigid reference for the correction and adjustment of the deviation and ensuring the effectiveness of the deviation adjustment. Align the upper alignment point matching piece 200 with the lower alignment point matching piece 200, and insert the standard adjusting block 300 into the corresponding first positioning groove 110 and second positioning groove 120, so that the preliminary alignment can be completed. This position can be used as a reference for the adjusting block 300 of other positions. Combined with the known position of the alignment point matching piece 200 and the position of the docking groove 320 on the standard block, the machining position and size of the docking groove 320 on the adjusting block 300 can be calculated according to the deviation, thereby improving the machining efficiency of the docking groove 320 on the adjusting block 300. After the upper steel shell segment 100 is completely lowered, each matching piece 200 is fixed by bolts. After the bolts are fixed, the wall plates of the upper and lower steel shell segments 100 are welded to form a rigid overall structure.

[0132] In an embodiment, the steel-concrete column construction control method further comprises:

[0133] After the same steel shell segments 100 of the two steel-concrete columns are constructed, the construction of the next steel shell segment 100 can be performed;

[0134] The actual coordinate size of the constructed steel shell segment 100 of the two steel-concrete columns is measured synchronously, and the current elevation deviation and spacing deviation of the two steel-concrete columns are obtained;

[0135] The splicing position of the next steel shell segment 100 of each steel-concrete column is adjusted according to the current elevation deviation and spacing deviation to correct the current elevation deviation and spacing deviation.

[0136] Specifically, the current elevation deviation and spacing deviation between the two steel-concrete columns are evaluated after every 3-6 steel shell segments 100 are constructed. For example, the deviation evaluation can be performed after 5 steel shell segments 100 are constructed to avoid the spacing or height deviation between the two steel-concrete columns exceeding the design requirements. In this embodiment, the height difference between the two steel-concrete columns should be not greater than ±1.0 mm, and the spacing deviation between the two steel-concrete columns should be not greater than ±2 mm.

[0137] If the construction progress of the two steel-concrete columns is not synchronized, the early small deviation will be added with each segment, and the deviation will be added with each segment. By comparing the synchronous construction of the double towers, the early small relative deviation can be avoided to be hidden, and the deviation can be corrected and adjusted through the adjusting block 300 when the next steel shell segment 100 of the two towers is spliced, so that the deviation between the double towers after the next stage is completed returns to the design value, and the installation requirements of the subsequent cross beams are guaranteed.

[0138] It should be understood that, although Figure 9 and Figure 10The steps in the flowcharts are shown in sequence according to the arrows, but the steps are not necessarily executed in the order indicated by the arrows. Unless otherwise explicitly stated herein, the steps are not strictly limited in sequence, and the steps can be executed in other sequences. Moreover, Figure 9 And Figure 10 At least some of the steps in the flowcharts can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of the steps or stages is not necessarily sequential, but can be alternately or alternately executed with at least some of the other steps or steps or stages in the other steps.

[0139] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0140] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0141] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0142] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0143] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A method of construction control of a steel-concrete tower column, characterized by, The construction control method comprises: Step S1: among two adjacent steel shell segments, the lower steel shell segment is used as the reference of the upper steel shell segment, the alignment axis is drawn on the outer wall of each steel shell segment, and the deviation of the alignment axis from the geometric center line of the outer wall of the steel shell segment is controlled to be less than or equal to a preset value; The steel shell segment to be tested is hoisted to the lower reference steel shell segment for pre-assembly, the horizontal position of the steel shell segment to be tested relative to the reference steel shell segment is adjusted according to the alignment axis, so that the alignment accuracy of the alignment axes of the upper and lower steel shell segments is within the preset accuracy range, and inspection is performed; Step S2: after the inspection is passed, the two matching parts in each group are respectively installed at the joint of the two steel shell segments; the two matching parts in each group are separated and hoisted away from the upper steel shell segment; the coordinate position of the matching part on the steel shell segment is measured and recorded; Step S3: the steel shell segment after the inspection is completed is transported to the construction site, and the steel shell segments are hoisted and assembled; Step S4: whether there is a deviation between the actual position size and the design position size of the completed steel shell segment is detected; Step S5: if yes, the matching part at the corresponding position of the steel shell segment is selected as the alignment point, a standard adjusting block is placed into the first positioning groove corresponding to the position of the matching part, the deviation value of the constructed steel shell segment is calculated according to the position of the matching part, other adjusting blocks corresponding to the deviation value are matched according to the deviation value, the adjusting block is installed in the first positioning groove of the lower constructed steel shell segment, the upper steel shell segment is hoisted to the upper side of the constructed steel shell segment, and the upper and lower steel shell segments are coarsely positioned through the matching part of the alignment point; the steel shell segment is lowered according to the position of the adjusting block until the adjusting block is further inserted into the second positioning groove of the bottom wall of the upper steel shell segment, so as to adjust the splicing position of the next steel shell segment and correct the construction position of the steel-concrete tower column.

2. The construction control method of a steel-concrete tower column according to claim 1, characterized by, The step S1 further comprises: For the first steel shell segment, i.e., the T0 steel shell segment, the positioning steel frame is pre-assembled with the T0 steel shell segment, and the relative position of the T0 steel shell segment is adjusted according to the coordinates of the centering points on the positioning steel frame and the T0 steel shell segment; The T1 steel shell segment is pre-assembled on the T0 steel shell segment, and the relative position of the T1 steel shell segment is adjusted according to the alignment axis.

3. The construction control method of a steel-concrete tower column according to claim 1, characterized by, The second positioning groove is provided with a plug-in block; The matching of other adjusting blocks corresponding to the deviation value according to the deviation value further comprises: The actual coordinates of the constructed steel shell segment obtained by measurement are compared with the theoretical design coordinates to obtain the flatness deviation and the torsion deviation of the constructed steel shell segment; The actual opening depth of the butt joint groove on the adjusting block is calculated according to the flatness deviation, so as to compensate for the flatness deviation; The actual opening position of the butt joint groove on the adjusting block is calculated according to the torsion deviation, so as to compensate for the torsion deviation; The butt joint groove is formed on the adjusting block according to the actual opening depth and the actual opening position; The lowering of the steel shell segment according to the position of the adjusting block until the adjusting block is further inserted into the second positioning groove of the bottom wall of the upper steel shell segment comprises: When the upper steel shell segment is placed, the adjusting block is inserted into the second positioning groove of the upper steel shell segment, and the inserting block in the second positioning groove is inserted into the butt joint groove of the adjusting block.

4. The construction control method of a steel-concrete tower column according to any one of claims 1 to 3, characterized by, After the step S3, the method further comprises: After the connection of the two steel shell segments is completed, the concrete is poured; When the pouring surface of the concrete rises to a set layer height, the pouring of the concrete is stopped after the first time interval, and then the pouring of the concrete is performed again; After the pouring of the last layer of concrete is completed, the vibrating equipment is inserted into the next layer of concrete by 5cm-10cm for vibration to promote the fusion of the two layers of concrete; After the pouring of the top layer of concrete is completed, the top layer of concrete is vibrated again after the second time interval.

5. The construction control method of a steel-concrete tower column according to any one of claims 1 to 3, characterized by, The steel-tower construction control method further comprises: After the construction of the same steel shell segments of the two steel-towers is completed, the construction of the next steel shell segment is performed; The actual coordinate sizes of the constructed steel shell segments of the two steel-towers are synchronously measured, and the current elevation deviation and the interval deviation of the two steel-towers are obtained; The splicing positions of the next steel shell segments of the respective steel-towers are adjusted according to the current elevation deviation and the interval deviation to correct the current elevation deviation and the interval deviation.

6. A tower steel shell assembly for use in the construction control method of any one of claims 1-5, characterized in that, The cable-tower steel shell assembly comprises: A plurality of steel shell segments, the upper and lower steel shell segments can be spliced together in position; A plurality of sets of matching pieces, the sets of matching pieces are arranged at intervals in the circumferential direction of the steel shell segments, two matching pieces are arranged in each set, and the two matching pieces in each set are respectively arranged at the joints of the two adjacent steel shell segments; An adjusting block, a first positioning groove is formed on the upper surface of the steel shell segment, a second positioning groove is formed on the lower surface of the steel shell segment, the size of the adjusting block is obtained according to the position deviation of the lower constructed steel shell segment, the bottom of the adjusting block can be arranged in the first positioning groove, when the upper steel shell segment is placed on the lower steel shell segment, the adjusting block is inserted into the second positioning groove of the upper steel shell segment to correct the position of the upper steel shell segment; a positioning pin is arranged on the bottom wall of the adjusting block, a positioning hole is formed on the bottom wall of the first positioning groove, and the positioning pin can be inserted into the positioning hole; an inserting block is arranged in the second positioning groove, and the inserting block is a tapered body, the cross-sectional size of the inserting block gradually decreases in the downward direction; an opening position mark is arranged on the top wall of the adjusting block, the actual opening position of the butt joint groove is determined according to the position deviation of the constructed steel shell segment, the butt joint groove is formed according to the position deviation, and the shape of the butt joint groove is a tapered groove matched with the shape of the inserting block, when the adjusting block is inserted into the second positioning groove of the upper steel shell segment, the inserting block is inserted into the butt joint groove.

7. The cable tower steel shell assembly of claim 6, wherein, A plurality of first positioning grooves are arranged at intervals on the top wall of the steel shell segment, a plurality of second positioning grooves are arranged at intervals on the bottom wall of the steel shell segment, the positions of the first positioning grooves correspond to the positions of the second positioning grooves one by one, and the position of each first positioning groove corresponds to the position of a matching piece.

8. A pylon shell assembly according to claim 6 or 7, wherein, The number of the positioning pins is two, the positioning pins are arranged at intervals, the number of the positioning holes is consistent with the number of the positioning pins, and each positioning pin is inserted into a corresponding positioning hole.

9. A pylon shell assembly according to claim 6 or 7, wherein, The cross-sectional size of the adjusting block tends to decrease from the first positioning groove below to the second positioning groove above, and the size of the second positioning groove is greater than that of the adjusting block.

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