Steel concrete tower column construction control method and cable bent tower steel shell assembly

Abstract

The invention relates to a steel-concrete tower column construction control method and a cable bent tower steel shell assembly, the cable bent tower steel shell assembly comprises a plurality of steel shell sections and a plurality of sets of matching pieces, the lower steel shell section is used as a benchmark for pre-assembly, manufacturing errors are found and corrected in time, and accumulated deviation during field installation is reduced. And the matching parts are installed at the splicing positions, the steel shell sections are pre-spliced in a factory, the matching parts are installed and then transported to the site, and rapid positioning between the steel shell sections is achieved through physical constraint of the matching parts. And the rigid constraint of the matching piece further limits the displacement of the upper and lower steel shell sections in the welding process. Meanwhile, the splicing position of the next steel shell section is adjusted in real time according to the deviation, the splicing position can be corrected in time, and the construction precision of the reinforced concrete tower column is guaranteed. According to the construction control method, pre-assembly and on-site hoisting construction can be carried out synchronously, and rework caused by installation errors can be reduced by pre-assembly and timely correction of the assembly position according to deviation.

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 cooperatively measures the spatial coordinates of observation points by multiple total stations, predicts the posture of the to-be-installed segment by combining a rigid body transformation model, and displays the segment state by BIM modeling. Although the erection precision and construction efficiency are improved, the installation 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 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 turn, thereby reducing the amount of on-site processing and improving 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 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: Step S1: In two adjacent steel shell segments, the lower steel shell segment serves as the reference for the upper steel shell segment, the to-be-tested steel shell segment is hoisted to the lower reference steel shell segment for pre-assembly, and inspection is performed. Step S2: After inspection, two matching parts in each group are installed at the splicing positions of the two steel shell segments, respectively. Step S3: transporting the steel shell segment whose inspection is completed to the construction site, hoisting and assembling the steel shell segments; Step S4: detecting whether there is a deviation between the actual position size of the steel shell segment whose construction is completed and the design position size; Step S5: if yes, adjusting the splicing position of the next steel shell segment according to the deviation to correct the construction position of the steel-concrete tower column.

[0007] In one of the embodiments, the step S1 further comprises: marking the alignment axis on the outer wall of each steel shell segment, and controlling the deviation between the alignment axis and the geometric center line of the outer wall surface of the steel shell segment to be less than or equal to a preset value; pre-assembling the steel shell segment to be tested with the reference steel shell segment located below, adjusting the horizontal position of the steel shell segment to be tested relative to the reference steel shell segment 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; The step S2 further comprises: installing two matching pieces arranged in groups at the joints of the upper and lower steel shell segments, respectively; separating the two matching pieces in each group and hoisting the steel shell segment located above; measuring and recording the coordinate position of the matching piece on the steel shell segment.

[0008] In one of the embodiments, 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 T0 steel shell segment and the positioning steel frame; 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.

[0009] In one of the embodiments, the step S5 further comprises: matching the adjusting block corresponding to the deviation value according to the deviation value; installing the adjusting block in the first positioning slot of the steel shell segment located below which has been constructed; hoisting the steel shell segment located above to the upper side of the constructed steel shell segment, and lowering the steel shell segment according to the position of the adjusting block until the adjusting block is further inserted into the second positioning slot of the bottom wall of the steel shell segment located above.

[0010] In one of the embodiments, the outer wall of the steel shell segment is provided with a plurality of matching pieces, the top wall of the steel shell segment is provided with a plurality of first positioning grooves arranged at intervals, the bottom wall is provided with a plurality of second positioning grooves arranged at intervals, 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; The step of matching the adjustment block corresponding to the deviation value according to the deviation value comprises the following steps: The matching piece at the corresponding position of the steel shell segment is selected as the alignment point, a standard adjustment 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 other adjustment blocks corresponding to the deviation value are matched according to the deviation value. 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 at the alignment point.

[0011] In one of the embodiments, the second positioning groove is provided with a plug-in block. The step of matching the adjustment block corresponding to the deviation value according to the deviation value comprises the following steps: The actual coordinates of the constructed steel shell segment 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 adjustment block is calculated according to the flatness deviation to compensate for the flatness deviation. The actual opening position of the butt joint groove on the adjustment block is calculated according to the torsion deviation to compensate for the torsion deviation. The butt joint groove is formed on the adjustment block according to the actual opening depth and the actual opening position. The step of lowering the steel shell segment according to the position of the adjustment block until the adjustment block is further inserted into the second positioning groove of the bottom wall of the steel shell segment located above comprises the following steps: When the steel shell segment located above is lowered, the adjustment block is inserted into the second positioning groove of 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 adjustment block.

[0012] In one of the embodiments, the step S3 further comprises the following steps: After the connection of the two steel shell segments is completed, the pouring of concrete is performed. When the pouring surface of the concrete rises to a set layering height, the pouring of the concrete is performed again after the first time interval. After the pouring of the upper layer of concrete is completed, the vibrating equipment is inserted into the adjacent lower layer of concrete by 5cm to 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 secondarily vibrated after the second time interval.

[0013] In one embodiment, the steel-concrete tower construction control method further comprises: After the same steel shell segments of the two steel-concrete towers are constructed, the construction of the next steel shell segment can be performed; The actual coordinate sizes 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; 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.

[0014] The steel-concrete tower construction control method has at least the following beneficial effects compared with the prior art: 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, effective matching between steel shell segments is ensured, matching parts are installed at the splicing position, the steel shell segments are transported to the site after pre-assembly and matching part installation in the factory, and rapid positioning between steel shell segments can be achieved through the physical constraint of the matching parts, repeated measurement and calibration at the construction site are reduced, and high-altitude operation time is reduced. The rigid constraint of the matching parts 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, the splicing position can be corrected in time, and the construction accuracy of the steel-concrete tower is ensured. 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 rework caused by installation errors, and the construction period can be significantly shortened.

[0015] A cable tower steel shell assembly is applied to the steel-concrete tower construction control method described above, and the cable tower steel shell assembly comprises a plurality of steel shell segments and a plurality of groups of matching parts. The upper and lower steel shell segments can be spliced together in position. The matching parts are arranged at intervals around the circumference of the steel shell segment, and two matching parts are arranged in each group. The two matching parts in each group are installed at the joints of the two adjacent steel shell segments.

[0016] In one embodiment, the cable tower steel shell assembly further comprises an adjusting block. A first positioning groove is formed on the upper surface of the steel shell segment, and 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 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 to correct the position of the upper steel shell segment.

[0017] In one of the embodiments, a positioning pin is arranged on the bottom wall of the adjusting block, a positioning hole is arranged on the bottom wall of the first positioning groove, and the positioning pin is capable of being inserted into the positioning hole; a plug-in block is arranged in the second positioning groove, and the plug-in block is a conical body, and the cross-sectional size of the plug-in 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 arranged according to the position deviation, and the shape of the butt joint groove is a conical groove matched with the shape of the plug-in block, and 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

[0018] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and are used to interpret the application together with the description. The accompanying drawings are not intended to limit the application in any way.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0020] In addition, the drawings are not drawn in the ratio of 1:1, and the relative sizes of the various elements are only exemplarily drawn in the drawings, but not necessarily drawn in the true ratio.

[0021] Figure 1 It is a structural schematic view of a cable tower steel shell assembly in an embodiment.

[0022] Figure 2 It is a structural schematic view of a set of matching parts in an embodiment.

[0023] Figure 3 It is a structural schematic view of a steel shell segment and matching parts in an embodiment.

[0024] Figure 4 It is Figure 3 It is an enlarged view of A in FIG. 8.

[0025] Figure 5 It is Figure 3 It is a structural schematic view of a steel shell segment and matching parts in another view.

[0026] Figure 6 It is Figure 5 It is an enlarged view of B in FIG. 8.

[0027] Figure 7 It is a partial sectional view of a cable tower steel shell assembly in an embodiment.

[0028] Figure 8 Fig. 1 is a structural schematic diagram of the adjusting block in the embodiment. Figure 7

[0029] Figure 9 Fig. 2 is a flowchart of the steel-concrete tower column construction control method in the embodiment.

[0030] Figure 10 Fig. 3 is a flowchart of the steel-concrete tower column construction control method in another embodiment.

[0031] Legend of reference signs: cable tower steel shell assembly 10; steel shell segment 100; alignment axis 102; first positioning groove 110; second positioning groove 120; positioning hole 130; plug-in block 140; matching piece 200; alignment plate 210; matching hole 212; mounting plate 220; adjusting block 300; positioning pin 310; butt joint groove 320. DETAILED DESCRIPTION

[0032] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0033] Referring 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 sets of matching pieces 200. The upper and lower steel shell segments 100 can be aligned and spliced together. The plurality of sets of matching pieces 200 are arranged at intervals around the circumference of the steel shell segment 100. Each set includes two matching pieces 200, which are respectively mounted at the joint between adjacent steel shell segments 100. During construction, the steel shell segments 100 are processed and pre-spliced in the factory, and then the matching pieces 200 are installed on the steel shell segments 100. The two matching pieces 200 in each set are respectively fixed at the joint between adjacent steel shell segments 100, forming a point-to-point positioning relationship corresponding from top to bottom. Because the two matching pieces 200 in each set are accurately aligned at the joint, the upper steel shell segment 100 can be coarsely positioned by the alignment between the matching pieces 200 during on-site splicing, improving positioning efficiency and reducing the misalignment of the joint caused by traditional processes relying on visual or single-reference positioning. In addition, the plurality of sets of matching pieces 200 are arranged at intervals around the circumference of the steel shell segment 100, covering the entire joint circumference of the steel shell segment 100.

[0034] ​Specifically, the matching piece 200 comprises a locating plate 210 and a mounting plate 220, the locating plate 210 is arranged on the mounting plate 220, the mounting plate 220 is mounted on the outer wall of the steel shell segment 100, so that the locating plate 210 is aligned with the joint surface of the steel shell segment 100. The locating plate 210 is provided with a matching hole 212, the matching holes 212 of the locating plates 210 of two matching pieces 200 in each group can be aligned and communicated.

[0035] In the embodiment, four groups of matching pieces 200 are arranged at the joint of the upper and lower steel shell segments 100. In other embodiments, three groups, six groups or other number of groups of matching pieces 200 can also be arranged at the joint of the upper and lower steel shell segments 100 according to the shape of the steel shell segment 100.

[0036] Referring to Figures 3 to 8 In an embodiment, the pylon steel shell assembly 10 further comprises an adjusting block 300, the upper surface of the steel shell segment 100 is formed with a first positioning groove 110, the lower surface of the steel shell segment 100 is formed 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, and the bottom of the adjusting block 300 can be mounted 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.

[0037] 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.

[0038] 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, it cooperates with the matching piece 200 to achieve the circumferential rough positioning of the upper and lower steel shell segments 100, and through the adjusting block 300 to achieve accurate deviation compensation and correct flatness and torsion. The two work together to effectively improve the overall installation efficiency.

[0039] 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.

[0040] The traditional adjusting mode needs to be repeatedly fine-tuned, the upper steel shell segment 100 needs to be 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 of the top wall realizes the multi-dimensional deviation compensation, and is suitable for complex deviation scenarios.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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, and 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, and 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.

[0045] Referring to Figure 1 and Figure 9 , an embodiment of the application also discloses a construction control method for a steel-concrete tower column, 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. S1: In 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.

[0046] Specifically, the step S1 further comprises the following steps. 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 less than or equal to a preset value; for example, in the embodiment, the deviation of the alignment axis 102 from the center line of the top and bottom openings of the steel shell segment 100 is less than or equal to ±1 mm. 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 a preset accuracy range. In this embodiment, the preset accuracy range can be within 1 mm.

[0047] Further, when the steel shell segment 100 is pre-assembled, the cumulative accuracy needs to be managed to avoid 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 +1 mm, 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.

[0048] 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 positioning accuracy of the assembly.

[0049] S2: After inspection, two matching parts 200 in each group are respectively installed at the joint positions of the two steel shell segments 100.

[0050] Specifically, the step S2 comprises: The two matching parts 200 arranged in groups are respectively installed at the joints of the upper and lower steel shell segments 100; The two matching parts 200 in each group are separated and lifted away from the steel shell segment 100 above; The coordinate positions of the matching parts 200 on the steel shell segment 100 are measured and recorded.

[0051] By setting the matching parts 200, the coarse positioning can be completed in the actual installation of the steel shell segment 100 according to the coordinate positions of the matching parts 200, thereby improving the installation efficiency and installation accuracy of the steel shell segment 100.

[0052] S3: The steel shell segment 100 after inspection is transported to the construction site, and the steel shell segment 100 is hoisted and assembled.

[0053] Specifically, for the T0 steel shell segment 100, the positioning steel frame needs to be positioned and installed on the steel base of the pile cap concrete pier first; After the positioning steel frame construction is completed, when the T0 steel shell segment 100 is hoisted for testing, the height difference of the four corners of the T0 steel shell segment 100 relative to the positioning steel frame is measured, and the height difference is controlled within 1mm-5mm, and the level of the T0 steel shell segment 100 is measured and ensured during hoisting. For example, the height difference is controlled within 2mm.

[0054] The position coordinates of the T0 steel shell segment 100 are measured, and according to the difference between the position coordinates and the theoretical coordinates, the T0 steel shell segment 100 is guided to be lowered to achieve the positioning and installation of the T0 steel shell segment 100 and the positioning steel frame; and then the positioning steel frame and the T0 steel shell segment 100 are fixedly connected by rivets or bolts.

[0055] In an embodiment, after the step S3, the method further comprises: After the connection of the two steel shell segments 100 is completed, the concrete is poured; When the concrete pouring surface rises by about the set layering height, the concrete pouring is stopped for a first time interval, and then the concrete pouring is performed again.

[0056] In the embodiment, the first time is less than the initial setting time, for example, the first time is not more than 60min. During the stopping of pouring, the concrete is in a plastic stage and has not lost fluidity and cohesiveness. When pouring is performed again, the new concrete can be combined with the poured concrete at a molecular level without obvious interface layering. The layering control of the pouring height can reduce the instantaneous lateral pressure of the concrete on the steel shell segment 100, facilitate the quality control during the pouring process, and improve the concrete density. On the other hand, the pouring of the cable tower is performed at a high altitude, the construction space is limited, and the equipment cooperation is difficult. Through the layering and short-interval pouring control, the operation safety and efficiency can be improved, and the high-altitude construction rhythm of the cable tower can be adapted.

[0057] In the embodiment, the set layering height is about 40cm. During the pouring process, the concrete unloading speed is adjusted according to the real-time feedback of the concrete liquid level by the laser range finder to ensure that the pouring surface is basically at the same height.

[0058] Specifically, after the step of stopping the concrete pouring for a first time interval when the concrete pouring surface rises by about the set layering height and then performing the concrete pouring again, the method further comprises: After the pouring of the upper layer of concrete is completed, the vibrating equipment is inserted into the adjacent next layer of concrete by 5cm-10cm for vibration to promote the effective 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 a second time interval.

[0059] After the previous layer of concrete is poured, the vibrating rod of the vibrating equipment is inserted into the next layer by 5-10 cm. The high-frequency vibration generated by the vibrating makes the next layer of plastic concrete re-flow 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 the manner of "fast insertion and slow extraction", 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.

[0060] In another embodiment, the pouring ages of the concretes of the two adjacent steel shell segments 100 are not more than 10 days apart.

[0061] In an embodiment, the steel shell segments 100 of the steel shell concrete composite tower are connected by welding. The concrete also shrinks, so after the steel shell segments 100 are constructed on site, the position or angle of the steel shell segments 100 may change 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 is poured, 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.

[0062] 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.

[0063] 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, measure the actual three-dimensional coordinates of each relative position of the upper surface to the matching part 200, and evaluate the flatness and torsion angle of the lower steel shell segment 100.

[0064] 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.

[0065] In an embodiment, the step S5 includes: 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, fill the steel plate at the specified position to adjust the height position of the upper steel shell segment 100. After adjustment, measurement is checked again, and when the accuracy requirement is met, the upper and lower steel shell segments 100 are connected.

[0066] Because the torsion error of the steel shell segment 100 will develop a larger deviation with the increase of the height, it is necessary to adjust the torsion error 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 point and the matching parts 200 selected as the supporting vertex of the upper steel shell segment 100, the matching parts 200 at the locking point 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 vertex, and the displacement of the supporting vertex is responded according to the monitoring instruction; then the position of the adjusted upper steel shell segment 100 is measured, and the torsion adjustment effect 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.

[0067] 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 uneven gap between the upper and lower steel shell segments 100.

[0068] Referring to Figures 4 to 8 and Figure 10 In another embodiment of the present application, the step S5 further comprises: S51: According to the deviation value, a matching adjustment block 300 corresponding to the deviation value is matched.

[0069] Specifically, the step S51 comprises: Comparing the actual coordinates of the constructed steel shell segment 100 measured with the theoretical design coordinates to obtain the flatness deviation and the torsion deviation of the constructed steel shell segment 100; According to the flatness deviation, the actual opening depth of the butt joint groove 320 on the adjustment block 300 is calculated to compensate for the flatness deviation; According to the torsion deviation, the actual opening position of the butt joint groove 320 on the adjustment block 300 is calculated to compensate for the torsion deviation; According to the actual opening depth and the actual opening position, the butt joint groove 320 is opened on the adjustment block 300.

[0070] S52: Install the adjusting block 300 in the first positioning groove 110 of the lower constructed steel shell segment 100.

[0071] In this 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 segment 100. The adjusting block 300 is installed in the first positioning groove 110 by the cooperation between the positioning pin 310 and the positioning hole 130. Then, it is checked whether the position of the abutting 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 segment 100. If not, the position of the abutting groove 320 is corrected, or the adjusting block 300 is replaced according to the flatness deviation and the torsion deviation.

[0072] 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 segment 100, thereby affecting the installation accuracy of the upper steel shell segment 100.

[0073] S53: Hoist the upper steel shell segment 100 to the upper side of the constructed steel shell segment 100, and lower the steel shell segment 100 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 segment 100. Specifically, when the upper steel shell segment 100 is lowered, the adjusting block 300 is inserted into the second positioning groove 120 of the upper steel shell segment 100, and the insertion block 140 is inserted into the abutting groove 320 of the adjusting block 300.

[0074] When the upper steel shell segment 100 is hoisted, the insertion block 140 in the second positioning groove 120 on the lower surface of the upper steel shell segment 100 is slowly inserted into the abutting groove 320 on the upper surface of the adjusting block 300. Under the action of gravity, the upper steel shell segment 100 slides along the tapered structure of the abutting groove 320 to the only correct position, and the deviation compensation and accurate positioning are automatically completed. Finally, the upper steel shell segment 100 can be fixedly connected with the adjusting block 300, so as to improve the stability of the connection.

[0075] By acquiring the deviation data of the lower steel shell segment 100, the geometric deviation data is converted into the machining size of the abutment 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 abutment groove 320 to correct the deviation. The machining of the abutment groove 320 is separately manufactured, 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 abutment 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.

[0076] In an embodiment, a plurality of matching parts 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 part 200. The step S51 further comprises: Selecting the matching part 200 at a corresponding position of the steel shell segment 100 as the alignment point, and selecting a standard adjusting block 300 to be placed in the first positioning groove 110 corresponding to the position of the matching part 200, calculating the deviation value of the constructed steel shell segment 100 according to the position of the matching part 200, and matching other adjusting blocks 300 corresponding to the deviation value according to the deviation value. Hoisting the steel shell segment 100 located above to the upper side of the constructed steel shell segment 100, and coarsely positioning the upper and lower steel shell segments 100 through the matching part 200 at the alignment point.

[0077] Specifically, after the steel shell segment 100 located above is completely placed on the constructed steel shell segment 100, the two matching parts 200 in each group of the upper and lower steel shell segments 100 are first fixed by bolts and then welded.

[0078] The matching piece 200 is fixed to the outer wall of the steel shell and corresponds to the first positioning groove 110. The matching piece 200 at the corresponding position and the standard adjusting block 300 are selected as the alignment points, which provide a rigid reference for the correction and adjustment of the deviation and ensure the effectiveness of the deviation adjustment. The upper alignment point matching piece 200 is aligned with the lower alignment point matching piece 200, and the standard adjusting block 300 is inserted into the corresponding first positioning groove 110 and second positioning groove 120, so that the preliminary alignment is completed. The 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 a bolt. After the bolt is fixed, the wall plates of the upper and lower steel shell segments 100 are welded to form a rigid overall structure.

[0079] In an embodiment, the steel-concrete column construction control method further comprises: 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; The actual coordinate size of the constructed steel shell segment 100 of the two steel-concrete columns is synchronously measured, and the current elevation deviation and spacing deviation of the two steel-concrete columns are obtained; 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.

[0080] Specifically, the current elevation deviation and spacing deviation between the two steel-concrete columns are evaluated after each 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 requirement. 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.

[0081] If the construction progress of the two steel-concrete columns is not synchronized, the early small deviation will be added with the increase of the segments, 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 by 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 requirement of the subsequent cross beam is ensured.

[0082] 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 executed alternately or alternately with at least some of the other steps or steps in other steps.

[0083] In the description of the present application, 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" appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and is not intended to 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 a limitation on the present application.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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 construction control method for reinforced concrete tower columns, characterized in that, The construction control method includes: Step S1: In two adjacent steel shell segments, the lower steel shell segment serves as the reference for the upper steel shell segment. Alignment axes are engraved on the outer wall of each steel shell segment, and the deviation between the alignment axes and the geometric centerline 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 reference steel shell segment below 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 to ensure that the alignment accuracy of the alignment axes of the upper and lower steel shell segments is within the preset accuracy range, and then the alignment is inspected. Step S2: After passing the inspection, install the two matching parts in each group at the joint of the two steel shell segments respectively; separate the two matching parts in each group and lift them away from the upper steel shell segment; measure and record the coordinate position of the matching parts on the steel shell segment. Step S3: Transport the inspected steel shell segments to the construction site, and hoist and assemble the steel shell segments; Step S4: Check whether there is a deviation between the actual position and size of the completed steel shell segment and the design position and size; Step S5: If so, adjust the splicing position of the next steel shell segment according to the deviation to correct the construction position of the steel-concrete tower column.

2. The construction control method for reinforced concrete tower columns according to claim 1, characterized in that, Step S1 further includes: For the first steel shell segment, namely 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 center point on the positioning steel frame and the T0 steel shell segment. Pre-assemble the T1 steel shell segment onto the T0 steel shell segment, and adjust the relative position of the T1 steel shell segment according to the alignment axis.

3. The construction control method for reinforced concrete tower columns according to claim 1, characterized in that, Step S5 further includes: Match the adjustment block corresponding to the deviation value according to the deviation value; Install the adjusting block in the first positioning groove located in the steel shell section that has already been constructed below; The upper steel shell segment is hoisted above the already 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 on the bottom wall of the upper steel shell segment.

4. The construction control method for reinforced concrete tower columns according to claim 3, characterized in that, Multiple matching parts are installed on the outer wall of the steel shell segment. Multiple first positioning grooves are opened on the top wall of the steel shell segment at intervals, and multiple second positioning grooves are opened on the bottom wall at intervals. The positions of the first positioning grooves and the positions of the second positioning grooves correspond one-to-one, and the position of each first positioning groove corresponds to the position of a matching part. The step of matching the adjustment block corresponding to the deviation value based on the deviation value further includes: Select a matching part at a corresponding position on a steel shell segment as the alignment point, and select a standard adjustment block to be placed in the first positioning groove corresponding to the position of the matching part. Calculate the deviation value of the constructed steel shell segment based on the position of the matching part, and match other adjustment blocks corresponding to the deviation value based on the deviation value. The upper steel shell segment is hoisted to the top of the already constructed steel shell segment, and the upper and lower steel shell segments are roughly positioned using matching parts at the alignment points.

5. The construction control method for reinforced concrete tower columns according to claim 4, characterized in that, A plug-in block is provided in the second positioning groove; The step of matching other adjustment blocks corresponding to the deviation value according to the deviation value also includes: By comparing the actual coordinates of the constructed steel shell segment with the theoretical design coordinates, the flatness deviation and torsional deviation of the constructed steel shell segment can be obtained. The actual opening depth of the mating groove on the adjusting block is calculated based on the flatness deviation to compensate for the flatness deviation; The actual opening position of the mating groove on the adjusting block is calculated based on the torsional deviation in order to compensate for the torsional deviation; A mating groove is provided on the adjusting block according to the actual opening depth and actual opening position; The step of lowering the steel shell segment according to the position of the adjusting block until the adjusting block is further inserted into the second positioning groove on the bottom wall of the upper steel shell segment includes: When lowering the upper steel shell segment, continue until the adjusting block is inserted into the second positioning groove of the upper steel shell segment, and the plug in the second positioning groove is inserted into the mating groove of the adjusting block.

6. The construction control method for reinforced concrete tower columns according to any one of claims 1-5, characterized in that, After step S3, the method further includes: After the two steel shell segments are connected, concrete is poured. When the concrete pouring surface rises to the set layer height, stop the first time interval and then pour the concrete again. 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 the fusion of the two layers of concrete. After the top layer of concrete is poured, it is vibrated a second time after the second time interval.

7. The construction control method for reinforced concrete tower columns according to any one of claims 1-5, characterized in that, The construction control method for the reinforced concrete tower column also includes: Once the identical steel shell segments of two reinforced concrete tower columns have been completed, the construction of the next steel shell segment can begin. The actual coordinate dimensions of the steel shell segments of the two reinforced concrete tower columns that have been constructed are measured simultaneously, and the current elevation deviation and spacing deviation of the two reinforced concrete tower columns are obtained. Adjust the splicing position of the next steel shell segment of each steel-concrete tower column according to the current elevation deviation and spacing deviation, so as to correct the current elevation deviation and spacing deviation.

8. A steel shell assembly for a cable tower, applied in the construction control method for reinforced concrete tower columns as described in any one of claims 1-7, characterized in that, The tower steel shell assembly includes: Multiple steel shell segments, with upper and lower steel shell segments able to be aligned and spliced ​​together; And multiple sets of matching parts, the multiple sets of matching parts are arranged circumferentially around the steel shell segment, each set is provided with two matching parts, and the two matching parts in each set are respectively installed at the joint of two adjacent steel shell segments.

9. The cable tower steel shell assembly according to claim 8, characterized in that, The tower steel shell assembly also includes an adjusting block. A first positioning groove is formed on the upper surface of the steel shell segment, and 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 positional deviation of the steel shell segment already constructed below. 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 to correct the position of the upper steel shell segment.

10. The cable tower steel shell assembly according to claim 9, characterized in that, A positioning pin is provided on the bottom wall of the adjusting block, and a positioning hole is provided on the bottom wall of the first positioning groove, into which the positioning pin can be inserted. A plug-in block is provided in the second positioning groove, and the plug-in block is conical, with its cross-sectional dimensions gradually decreasing downwards. An opening position mark is provided on the top wall of the adjusting block. The actual opening position of the docking groove is determined according to the positional deviation of the constructed steel shell segment, and the docking groove is opened according to the positional deviation. The shape of the docking groove is a conical groove that matches 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 docking groove.

Images