A cable tower steel anchor head positioning device and a construction method thereof

Abstract

The application relates to a cable tower steel anchor head positioning device and a construction method thereof. The cable tower steel anchor head positioning device comprises a bridge tower, a hollow groove arranged at the upper portion of the bridge tower and a plurality of groups of anchor head positioning mechanisms arranged in the hollow groove. Each group of anchor head positioning mechanisms comprises a distance groove steel, a box girder plate and an anchoring assembly. The distance groove steel of the lowest anchor head positioning mechanism is fixed to the groove bottom of the hollow groove, and the distance groove steels of the other groups of anchor head positioning mechanisms are sequentially stacked along the height direction of the bridge tower. The box girder plate is inserted into the corresponding distance groove steel, and first steel corbels are symmetrically arranged at the two ends of the box girder plate. The anchoring assembly is arranged on each side of the first steel corbel, and the anchoring assembly comprises an anchor bottom plate, two groups of side plates fixed to the top surface of the anchor bottom plate, an anchoring pipe symmetrically arranged between the two groups of side plates and a steel cover plate fixed to the top of the two groups of side plates. A monitoring assembly is arranged on the steel cover plate. The application is convenient for height positioning of each anchoring assembly, has the advantages of accurate positioning and convenient construction.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, and in particular to a cable tower steel anchor head positioning device and its construction method. Background Technology

[0002] A pylon typically refers to the main tower in a cable-stayed or suspension bridge that supports the cables and serves as the anchorage point for the stay cables. Countless stay cables radiate from the pylon like the ribs of an umbrella, directly supporting the bridge deck. Most of the bridge deck's weight is transferred to the pylon through the stay cables, and then from the pylon to the substructure.

[0003] During the construction of cable-stayed bridge towers, in addition to the tower's load-bearing capacity, steel anchor beams or steel anchor boxes are the core components that safely and smoothly transfer the enormous tensile force of the stay cables / main cables to the tower, ensuring the bridge's alignment. The spatial angle of each stay cable is precisely calculated, and even a slight deviation in the three-dimensional coordinates of the steel anchor points can lead to changes in cable force, ultimately affecting the bridge's alignment and internal stress, and even structural safety. In the construction of existing cable-stayed bridge towers, when pre-embedded steel anchor heads (used for threading stay cables) are cast into the bridge tower using concrete, the pre-embedded steel anchor heads are prone to displacement during the casting process due to their lack of positioning capability. Once displaced, the subsequent correction process is cumbersome, greatly affecting the construction speed and quality of cable-stayed bridges.

[0004] Therefore, it is necessary to provide a new positioning device for cable tower steel anchor heads and its construction method to solve the above-mentioned technical problems. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a cable tower steel anchor head positioning device and construction method. The device facilitates the height positioning of each anchoring component and enables the positioning and installation of anchoring pipes used to fix stay cables.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a bridge tower steel anchor head positioning device, including a bridge tower, wherein a hollow groove is provided in the upper part of the bridge tower; the anchor head positioning device further includes multiple sets of anchor head positioning mechanisms arranged in the hollow groove, the multiple sets of anchor head positioning mechanisms are stacked and fixed in the hollow groove from bottom to top, each set of anchor head positioning mechanisms includes a spacer channel steel, a box girder plate and an anchoring component, the spacer channel steel of the bottommost anchor head positioning mechanism is fixed to the bottom of the hollow groove, and the spacer channel steels of the other multiple sets of anchor head positioning mechanisms are stacked in sequence along the height direction of the bridge tower and fixed in the hollow groove for vertical elevation positioning;

[0007] Each set of anchor positioning mechanisms has its box girder plate inserted into a corresponding spaced channel steel. A first steel bracket is symmetrically installed at both ends of the box girder plate. An anchoring assembly is installed on each side of the first steel bracket. The anchoring assembly includes an anchor base plate, two sets of side plates fixed to the top surface of the anchor base plate, and anchoring pipes symmetrically installed between the two sets of side plates. One end of each anchoring pipe is fixed between the two sets of side plates by a positioning block, and the other end extends to the outside of the bridge tower. The anchor base plate, the two sets of side plates, and the two sets of positioning blocks form an installation cavity for the cable-stayed bridge. A steel cover plate for sealing the installation cavity is installed on the top of the two sets of side plates. A monitoring component for monitoring the position of the positioning block and the anchoring pipe is installed on the steel cover plate. A second steel bracket is installed at the end of the anchor base plate opposite to the first steel bracket, and the second steel bracket is fixedly connected to the bridge tower.

[0008] A further technical solution of the present invention: The monitoring component includes a positioning tube, which is installed at the bottom center of the steel cover plate. A sleeve is threaded onto the bottom end of the positioning tube. A disc is integrally formed at the top end of the sleeve. A conical disc is slidably installed on the sleeve. Multiple limiting rods are evenly installed at the bottom end of the disc. A through hole is provided on the conical disc to slide with the multiple limiting rods. A sealing block that fits against the conical disc is embedded in one end of the anchoring tube that extends into the mounting cavity. An infrared rangefinder is fixedly installed on one side of the disc facing the two sets of anchoring tubes. The infrared rangefinder is located directly above the conical disc. The infrared rangefinder is electrically connected to a battery and an RF transmitter. The RF transmitter is communicatively connected to a host computer. The battery and the RF transmitter are embedded in the sealing block.

[0009] A preferred technical solution of the present invention is as follows: a through groove is provided in the middle of the box girder plate, installation door openings are provided on both sides of the spaced channel steel, and a ladder tread leading to the installation door opening is installed on the inner side wall of the spaced channel steel.

[0010] The preferred technical solution of the present invention is as follows: the bottom end of the fixed-distance channel steel is provided with a connecting pressure foot for butt joint installation, and the connecting pressure foot is provided with a threaded hole for installation; both the upper and lower ends of the box girder plate are provided with recessed grooves that are inserted and matched with the fixed-distance channel steel, and the box girder plate of each set of anchor head positioning mechanisms is inserted into the top of the corresponding fixed-distance channel steel; the fixed-distance channel steel of the lowest anchor head positioning mechanism is fixed to the bottom of the hollow groove by bolts, and the bottom end of the fixed-distance channel steel of each other set of anchor head positioning mechanisms is inserted into and fixed in the recessed groove at the top of the box girder plate of the adjacent anchor head positioning mechanism.

[0011] The preferred technical solution of the present invention is as follows: the outer walls of the two sides of the fixed-distance channel steel are welded with embedded web plates, one end of the embedded web plate away from the fixed-distance channel steel is welded to the bottom of the second steel bracket, and multiple anchoring steel bars are welded to the embedded web plate, and the embedded web plate is cast into a whole with the bridge tower through the multiple anchoring steel bars.

[0012] The preferred technical solution of the present invention is as follows: multiple shear nails are welded on the second steel bracket, and when binding the cast steel bars of the bridge tower, the multiple shear nails on the second steel bracket are bound together with the cast steel bars of the bridge tower, so that the second steel bracket and the bridge tower are pre-embedded and anchored during concrete pouring.

[0013] The preferred technical solution of the present invention is as follows: multiple mounting holes are evenly provided on both sides of the anchor base plate, and the anchor base plate of each anchoring assembly is fixedly connected to the corresponding first steel bracket by multiple connecting bolts; multiple ribs are welded between the two side plates and the anchor base plate of each anchoring assembly.

[0014] The preferred technical solution of the present invention is as follows: symmetrical positioning grooves are provided on both sides of each anchoring component, and the two sides of the positioning block are inserted into the positioning grooves of the two sides of the side plate respectively; the steel cover plate is detachably connected to the two sides of the side plate by bolts, and the bottom end of the steel cover plate is symmetrically provided with protrusions that are inserted into the top of the positioning groove.

[0015] The present invention also provides a construction method for the above-mentioned cable tower steel anchor head positioning device, which specifically includes the following steps;

[0016] S1. Elevation Positioning: First, according to the design requirements of the pylon, the lower half of the bridge pier is constructed until the top reaches the elevation of the bottom of the hollow channel. During the construction process, the elevation of the bridge tower is positioned using a total station. Then, the height of each layer of steel anchor heads is marked using a total station. The bottom layer of spaced channel steel is fixed to the bottom of the hollow channel. Then, the remaining spaced channel steel is stacked and fixed in sequence using box girder plates according to the marked steel anchor head height.

[0017] S2. Anchoring Installation: Two sets of anchoring components at the same elevation are installed on both sides of the box girder plate using bolts through the first steel bracket; specifically, the anchoring components are connected to the first steel bracket by bolts through the anchor base plate, and then the positioning block with the anchoring pipe welded on it is inserted between the two sets of side plates; after positioning, the monitoring component is installed on each side anchoring component;

[0018] S3. Installation of embedded parts: The second steel bracket is installed on one side of the anchor base plate and anchoring steel bars are set for the bridge tower to be cast. Then, embedded web plates are set on both sides of the spaced channel steel and the embedded web plates are welded or tied to the steel cage for the cable tower to be cast.

[0019] S4. Pouring Position Monitoring: After the installation of the embedded parts is completed, the mold used for the pouring of the bridge tower is fixed on the bridge tower using a climbing frame. The climbing frame is used to climb the bridge tower step by step to pour concrete. During the pouring, the position of the anchor pipe is monitored using monitoring components. If any abnormal data is found, timely adjustments are made before the pouring is completed.

[0020] The preferred technical solution of the present invention is as follows: the monitoring component includes a positioning tube, a conical disk, and two sets of infrared rangefinders;

[0021] During the installation of the monitoring component in step S2, the positioning tube is installed at the bottom center of the steel cover plate of the anchoring component. A sleeve is threaded onto the bottom end of the positioning tube. The conical disc is inserted into the sleeve and can slide on the sleeve. A disc is integrally formed at the top of the sleeve. A sealing block is fixedly connected to the end of the anchoring tube that extends into the installation cavity. After the anchoring tube is inserted into the installation cavity, the sealing block is made to fit against the conical disc. Two sets of infrared rangefinders are installed on the side of the disc facing the two sets of anchoring tubes, and the infrared rangefinders are located directly above the conical disc. Each set of infrared rangefinders is electrically connected to a battery and an RF transmitter. The battery and RF transmitter are embedded in the sealing block. The infrared rangefinders communicate with the host computer through the RF transmitter. After the monitoring component is installed, the steel cover plate is fixed to the two sets of side plates with bolts to seal the installation cavity.

[0022] During concrete pouring in step S4, if the anchor pipe experiences significant impact and vertical displacement, the sealing block moves synchronously with the anchor pipe. As it moves, the sealing block pushes the conical disc along the sleeve. During this movement, an infrared rangefinder measures the distance from the top of the conical disc to the rangefinder, and then a radio frequency transmitter transmits the data to a host computer. The host computer collects the data, thus monitoring the anchor pipe's position during the pouring process. If any abnormal data is detected, timely adjustments are made before the concrete is fully formed.

[0023] Compared with related technologies, the present invention has the following beneficial effects:

[0024] (1) The present invention provides a cable tower steel anchor head positioning device. By using the spaced channel steel and box girder plate to mark the height of the anchoring components, it is convenient to position each anchoring component at a height. After positioning, the anchoring components can be positioned and installed by using the anchor bottom plate, side plate, rib plate, positioning block, anchoring pipe, steel cover plate and protrusion. In addition, the spaced channel steel is provided with ladder steps and installation door openings to facilitate climbing installation and subsequent maintenance.

[0025] (2) By setting up monitoring components on the steel cover plate, the installation of the anchor pipe can be monitored when the anchor pipe is installed in place and the overall bridge tower is being cast. In this way, when misalignment occurs, it can be adjusted in time, thereby improving the installation positioning accuracy of the anchor pipe during the construction process and correcting it in time, avoiding large-scale rework in the later stage. The installation positioning is convenient and can improve the quality and efficiency of bridge tower construction. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2This is a schematic diagram of the structure in an embodiment of the present invention, showing an anchoring assembly installed on a spaced channel steel.

[0028] Figure 3 This is a schematic diagram of a half-section of the anchor plate in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the mounting cavity in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of a structure in an embodiment of the present invention in which a box girder plate is installed on a spaced channel steel.

[0031] Figure 6 This is a schematic diagram of the box girder plate in an embodiment of the present invention;

[0032] Figure 7 This is an exploded view of the anchoring assembly in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the monitoring component in an embodiment of the present invention.

[0034] The diagram labels are as follows: 1. Bridge tower; 101. Hollow channel; 2. Spacing channel steel; 21. Connecting foot; 22. Embedded web plate; 23. Escalator tread; 201. Installation doorway; 3. Box girder plate; 301. Sinking channel; 302. Through channel; 4. First steel bracket; 41. Connecting bolt; 5. Anchoring assembly; 51. Anchor base plate; 52. Side plate; 521. Rib plate; 53. Positioning block; 54. Anchoring pipe; 55. Steel cover plate; 551. Protrusion; 501. Mounting hole; 502. Positioning groove; 503. Mounting cavity; 6. Monitoring assembly; 61. Positioning pipe; 62. Sleeve; 63. Disc; 64. Conical disc; 65. Limiting rod; 66. Sealing block; 67. Infrared rangefinder; 68. Battery; 69. Radio frequency transmitter; 7. Second steel bracket. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0037] An embodiment provides a cable tower steel anchor head positioning device, such as Figures 1 to 8As shown, the bridge includes a bridge tower 1. A hollow groove 101 is formed in the upper part of the bridge tower 1. Multiple sets of anchor head positioning mechanisms are arranged from bottom to top within the hollow groove 101. Each set of anchor head positioning mechanisms includes a spacer channel steel 2, a box girder plate 3, and an anchoring assembly 5. The spacer channel steel 2 of the lowest anchor head positioning mechanism is fixed to the bottom of the hollow groove 101. The spacer channel steel 2 of the other anchor head positioning mechanisms are stacked sequentially along the height direction of the bridge tower 1 and fixed within the hollow groove 101. The spacer channel steel 2 is used for vertical elevation positioning. The box girder plate 3 of each set of anchor head positioning mechanisms is inserted into the top of the corresponding spacer channel steel 2. Adjacent sets of spacer channel steel 2 are connected through the box girder plate 3. First steel brackets 4 are symmetrically installed at both ends of the box girder plate 3, and anchoring assemblies 5 are installed on each side of the first steel bracket 4. The anchoring assembly 5 includes an anchor base plate 51 fixed to the first steel bracket 4. The anchor base plate 51 has several mounting holes 501 evenly distributed on both sides. The anchor base plate 51 is fixedly connected to the corresponding first steel bracket 4 via multiple connecting bolts 41. Two sets of side plates 52 are installed at the top center of the anchor base plate 51. Positioning grooves 502 are symmetrically formed on the two sets of side plates 52. Positioning blocks 53 are inserted into the positioning grooves 502, and anchoring pipes 54 are installed on the positioning blocks 53. Each anchoring assembly 5 has an anchoring pipe 54 extending out of the bridge tower 1; the anchor base plate 51, the two sets of side plates 52, and the positioning block 53 of each anchoring assembly 5 form an installation cavity 503 for the cable-stayed steel cable; steel cover plates 55 for sealing the installation cavity 503 are installed on the two sets of side plates 52; a monitoring component 6 for monitoring the position of the positioning block 53 and the anchoring pipe 54 is installed on the steel cover plate 55; and a second steel bracket 7 is installed on the end of the anchor base plate 51 that is away from the first steel bracket 4.

[0038] It should be noted that during use, after the lower half of the bridge pier of bridge tower 1 is cast and formed, a hollow trough 101 for constructing the upper half of bridge tower 1 is set up. Then, under the measurement and calibration of a total station, multiple spaced channel steels 2 are stacked sequentially on the hollow trough 101 using box girder plates 3. Then, the first steel brackets 4 are symmetrically installed at both ends of the box girder plates 3. Then, the anchor base plate 51 is installed by connecting the bolt 41 through the mounting holes 501. Then, the positioning block 53 with the anchoring pipe 54 welded on it is inserted into the positioning groove 502. During insertion, through... The shims allow for further fine-tuning of the height. After insertion, the monitoring component 6 is installed on the steel cover plate 55. The monitoring component 6 is then used to monitor the position of the installed positioning block 53 and anchor pipe 54. Then, the reinforcing bars are tied and poured on the outside of the anchor pipe 54. When tying the reinforcing bars, a second steel bracket 7 is installed on the other side of the anchor base plate 51 and tied to the poured reinforcing bars for pre-embedding, so that it is poured into one piece with the bridge tower 1. After the reinforcing bars are tied, the main body of the bridge tower 1 can be poured using the formwork for support.

[0039] It should also be noted that: the length of the fixed-distance channel steel 2 is matched with the vertical spacing of the two adjacent anchor pipes 54 designed, and the spacing of the center lines of the anchor components 5 at both ends of the box girder slab 3 is matched with the horizontal spacing of the two adjacent anchor pipes 54 designed, so as to accurately position and install the steel anchor head; when the anchor pipe 54 is installed, according to the designed position, its extended length should pass through the outside of the tower body. Therefore, the cast steel reinforcement cage of the tower body needs to reserve holes for the anchor pipe 54 to pass through.

[0040] In this embodiment, the second steel bracket 7 is welded with several shear nails for pre-embedding. When binding the cast steel bars, the second steel bracket 7 is bound together with the cast steel bars using the welded shear nails. Thus, when the concrete is poured, the second steel bracket 7 is pre-embedded and anchored to the bridge tower 1, and the second steel bracket 7 further supports the anchoring component 5.

[0041] Among them, several ribs 521 are uniformly welded between the two sets of side plates 52 and the anchor base plate 51, which is used to strengthen the connection strength between the side plates 52 and the anchor base plate 51.

[0042] In an embodiment of the present invention, please refer to Figures 1 to 8 The bridge tower 1 has a vertical maintenance slot on its front leading to the hollow groove 101. The spaced channel steel 2 is installed directly opposite the vertical maintenance slot, which leads to the hollow area of ​​the spaced channel steel 2. The bottom end of the spaced channel steel 2 is provided with a connecting foot 21 for docking installation. The connecting foot 21 has a threaded hole for installation. The spaced channel steel 2 has installation door openings 201 on both sides. The upper and lower ends of the box girder plate 3 have recesses 301 that fit into the spaced channel steel 2. The middle of the box girder plate 3 has a through groove 302. Multiple ladder treads 23 leading to the installation door openings 201 are installed on the inner side wall of the spaced channel steel 2.

[0043] It should be noted that during the installation of the spaced channel steel 2, the bottom spaced channel steel 2 is fixed to the bottom of the hollow channel 101 with bolts using the connecting foot 21. Then, the box girder plate 3 is clamped to the top of the spaced channel steel 2 using the bottom groove 301. Then, another spaced channel steel 2 is inserted into the groove 301 at the top of the box girder plate 3. In this way, the spaced channel steel 2 is stacked sequentially using the box girder plate 3. After the stacking installation, maintenance personnel can enter each layer of spaced channel steel 2 through the vertical maintenance slot, and then climb up and down using the ladder steps 23 inside the spaced channel steel 2, and climb out through the installation doorway 201 to perform the positioning, installation and maintenance of the anchoring component 5 and the monitoring component 6.

[0044] In this embodiment, in order to strengthen the connection between the fixed-spacing channel steel 2 and the bridge tower 1, embedded web plates 22 are welded to the outer side walls on both sides of the fixed-spacing channel steel 2. The end of the embedded web plate 22 facing away from the fixed-spacing channel steel 2 is welded to the bottom of the second steel bracket 7, and several anchoring steel bars are welded on the embedded web plate 22. In this way, the fixed-spacing channel steel 2 can be cast into one piece with the bridge tower 1 using the anchoring steel bars of the embedded web plate 22, thereby strengthening the installation strength of the fixed-spacing channel steel 2.

[0045] In this embodiment: during the pouring process, the outer contour of the embedded web 22 needs to be supported by a template to prevent concrete from flowing into the gap between the embedded web 22 and the anchoring component 5 during pouring, which facilitates the installation of the stay cable using the anchoring component 5 later.

[0046] In an embodiment of the present invention, please refer to Figures 1 to 8 The steel cover plate 55 is detachably connected to two sets of side plates 52 by bolts, and the bottom end of the steel cover plate 55 is symmetrically provided with protrusions 551 that insert into the positioning groove 502; the monitoring component 6 includes a positioning tube 61, which is installed at the bottom middle part of the steel cover plate 55. A sleeve 62 is threadedly installed at the bottom end of the positioning tube 61. A disc 63 is integrally formed at the top end of the sleeve 62. A conical disc 64 is slidably installed on the sleeve 62. A plurality of limiting rods 65 are evenly installed at the bottom end of the disc 63. The conical disc 64 is... The device has through holes that slide with multiple limiting rods 65. One end of the anchor tube 54 that extends into the mounting cavity 503 is fitted with a sealing block 66 that fits against the conical disc 64. An infrared rangefinder 67 is fixedly installed on one side of the disc 63 facing the two sets of anchor tubes 54. The infrared rangefinder 67 is located directly above the conical disc 64. The infrared rangefinder 67 is electrically connected to a battery 68 and a radio frequency transmitter 69. The radio frequency transmitter 69 is communicatively connected to a host computer. The battery 68 and the radio frequency transmitter 69 are embedded in the sealing block 66.

[0047] It should be noted that when using the monitoring component 6, after the positioning block 53 and anchor pipe 54 are inserted into the positioning groove 502, and then the two sealing blocks 66 are installed at the end of the anchor pipe 54 that extends into the installation cavity 503, the battery 68 and radio frequency transmitter 69 on the sealing block 66 are connected to the infrared rangefinder 67 on the same side. After connection, the conical disc 64 is inserted into the sleeve 62 and multiple limiting rods 65, and then the steel cover plate 55 is fixed to the side plate 52 with bolts. During fixing, the protrusion 551 is inserted into the positioning groove 502. At this time, the outer wall of the conical disc 64 contacts the end face of the sealing block 66, and the entire... The installation cavity 503 is sealed. After sealing and overall stabilization, the distance between the top of the conical disk 64 and the disk 63 is detected by the infrared rangefinder 67 as the initial zero point value. The data is transmitted to the host computer through the radio frequency transmitter 69 and the initial data is recorded. During the pouring process, when the positioning block 53 and the anchor pipe 54 are displaced, the sealing block 66 will squeeze the conical disk 64 to slide along the sleeve 62. When sliding, the infrared rangefinder 67 detects the change in the distance between the top of the conical disk 64 and the disk 63. After receiving the abnormal data from the radio frequency transmitter 69, the host computer issues a warning and corrects the anchor point with abnormal data.

[0048] It should also be noted that, in order to achieve rapid positioning and correction, each radio frequency transmitter 69 is marked with a number. During installation, each numbered radio frequency transmitter 69 corresponds to the anchor pipe 54 positioned at the corresponding floor height. In this way, by tracking the number of the radio frequency transmitter 69 that transmits abnormal data, the anchor pipe 54 with abnormal installation and positioning can be corrected and adjusted in a timely manner.

[0049] An embodiment provides a construction method for a cable tower steel anchor head positioning device, which includes the following steps;

[0050] S1. Elevation Positioning: First, according to the design requirements of the pylon, the lower half of the pier of the bridge tower 1 is constructed until the top reaches the elevation of the bottom of the hollow trough 101. During the construction process, the elevation of the bridge tower 1 is positioned using a total station. Then, the height of each layer of steel anchor heads is marked using a total station. The bottom layer of spaced channel steel 2 is fixed to the bottom surface of the hollow trough 101. Then, the remaining spaced channel steel 2 is stacked and fixed in sequence using box girder plates 3 according to the marked steel anchor head height.

[0051] S2, Anchoring Installation: The two sets of anchoring components 5 at the same elevation are installed on both sides of the box girder plate 3 using the first steel bracket 4 with bolts;

[0052] Specifically, the anchoring component 5 is installed by connecting the connecting screw 41 of the first steel bracket 4 through the mounting hole 501 opened in the anchor base plate 51. Then, the positioning block 53 with the anchoring pipe 54 welded on it is inserted into the positioning groove 502 opened in the two sets of side plates 52. After positioning, the monitoring component 6 is installed. The sealing block 66 is inserted into one end of the anchoring pipe 54 that extends into the installation cavity 503. Then, the conical disc 64 is inserted into the sleeve 62. Then, the infrared rangefinder 67 is electrically connected to the battery 68 and the radio frequency transmitter 69 through the wiring harness. Finally, the steel cover plate 55 is fixed to the two sets of side plates 52 with bolts to seal the installation cavity 503.

[0053] S3. The second steel bracket 7 is installed on one side of the anchor base plate 51 and anchoring steel bars are set for casting with the bridge tower 1. Then, embedded web plates 22 are set on both sides of the spaced channel steel 2. The embedded web plates 22 are welded or tied to the steel cage for casting the cable tower.

[0054] S4. Pouring Position Monitoring: After the installation of the embedded parts is completed, the mold used for the pouring and forming of the bridge tower is fixed on the bridge tower 1 using a climbing frame. The climbing frame is used to climb the bridge tower 1 step by step to pour concrete. During the pouring, the position of the anchor pipe 54 is monitored using the monitoring component 6. When the anchor pipe 54 is subjected to a large impact during the pouring, and the anchor pipe 54 moves up and down, the sealing block 66 moves synchronously with the anchor pipe 54. During the movement, the sealing block 66 pushes the conical disk 64 to move synchronously along the sleeve 62. During the movement, the distance from the top of the conical disk 64 to the infrared rangefinder 67 is measured using the infrared rangefinder 67. Then, the data is transmitted to the host computer using the radio frequency transmitter 69. The host computer collects the data to monitor the position of the anchor pipe 54 during the pouring and forming process. When abnormal data is found, timely adjustments are made before the pouring is formed.

[0055] The working principle of the cable tower steel anchor head positioning device provided by this invention is as follows:

[0056] In use, after the lower half of the bridge tower 1 is cast and shaped, a hollow trough 101 for constructing the upper half of the bridge tower 1 is set up. Then, at the measurement and calibration point of the total station, several spaced channel steels 2 are stacked sequentially on the hollow trough 101 using box girder plates 3. Then, the first steel brackets 4 are symmetrically installed at both ends of the box girder plates 3. Then, the anchor base plate 51 is installed by connecting the bolt 41 through the mounting holes 501. Then, the positioning block 53 with the anchor pipe 54 welded on it is inserted into the positioning groove 502. During insertion, the height can be further adjusted by setting shims. After precise positioning and adjustment, the two sealing blocks 66 are installed at one end of the anchoring pipe 54 that extends into the installation cavity 503. Then, the battery 68 and radio frequency transmitter 69 on the sealing block 66 are connected to the infrared rangefinder 67 on the same side. After connection, the conical disc 64 is inserted onto the sleeve 62 and several limiting rods 65. The steel cover plate 55 is then fixed to the side plate 52 with bolts. During fixing, the protrusion 551 is inserted into the positioning groove 502. At this time, the outer wall of the conical disc 64 contacts the end face of the sealing block 66, thus securing the entire installation cavity. After the cavity 503 is sealed, and the overall structure is stabilized, the distance between the top of the conical disk 64 and the disk 63 is detected using an infrared rangefinder 67 as the initial zero point value. The data is then transmitted to the host computer via an RF transmitter 69 to record the initial data. Next, reinforcing bars are tied to the outside of the positioned and installed anchor pipe 54. During the binding of the reinforcing bars, a second steel bracket 7 is installed on the other side of the anchor base plate 51 and tied to the reinforcing bars. To strengthen the connection between the spaced channel steel 2 and the bridge tower 1, the spaced channel steel 2 can utilize the anchor of the pre-embedded web plate 22. The reinforcing steel bars are cast into one piece with the bridge tower 1, thereby strengthening the installation strength of the spaced channel steel 2. After safety is completed, the main body of the bridge tower 1 can be cast by using formwork for support on the outside. During the casting process, when the positioning block 53 and the anchor pipe 54 are displaced, the sealing block 66 will squeeze the conical disk 64 to slide along the sleeve 62. When sliding, the infrared rangefinder 67 detects that the distance between the top of the conical disk 64 and the disk 63 has changed. After receiving the abnormal data received by the radio frequency transmitter 69, the host computer issues a warning and corrects the anchor points with abnormal data.

[0057] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0058] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A cable tower steel anchor head positioning device, comprising a bridge tower (1), wherein a hollow groove (101) is provided in the upper part of the bridge tower (1); characterized in that: The anchor positioning device also includes multiple sets of anchor positioning mechanisms arranged in the hollow groove (101). The multiple sets of anchor positioning mechanisms are stacked and fixed in the hollow groove (101) from bottom to top. Each set of anchor positioning mechanisms includes a fixed-distance channel steel (2), a box girder plate (3) and an anchoring component (5). The fixed-distance channel steel (2) of the bottom anchor positioning mechanism is fixed to the bottom of the hollow groove (101). The fixed-distance channel steel (2) of the other multiple sets of anchor positioning mechanisms are stacked in sequence along the height direction of the bridge tower (1) and fixed in the hollow groove (101) for vertical elevation positioning. Each set of anchor positioning mechanisms has its box girder plate (3) inserted into the corresponding spaced channel steel (2). First steel brackets (4) are symmetrically installed at both ends of the box girder plate (3). An anchoring assembly (5) is installed on each side of the first steel bracket (4). The anchoring assembly (5) includes an anchor base plate (51), two sets of side plates (52) fixed to the top surface of the anchor base plate (51), and anchoring pipes (54) symmetrically installed between the two sets of side plates (52). One end of each anchoring pipe (54) is fixed between the two sets of side plates (52) by a positioning block (53), and the other end extends to the bridge tower. (1) On the outside, the anchor base plate (51), the two sets of side plates (52) and the two sets of positioning blocks (53) form an installation cavity (503) for the inclined cable. A steel cover plate (55) for sealing the installation cavity (503) is installed on the top of the two sets of side plates (52). A monitoring component (6) for monitoring the position of the positioning block (53) and the anchor pipe (54) is installed on the steel cover plate (55). A second steel bracket (7) is installed at the end of the anchor base plate (51) away from the first steel bracket (4). The second steel bracket (7) is fixedly connected to the bridge tower (1).

2. The cable tower steel anchor head positioning device according to claim 1, characterized in that: The monitoring component (6) includes a positioning tube (61), which is installed at the bottom center of the steel cover plate (55). A sleeve (62) is threaded onto the bottom end of the positioning tube (61). A disc (63) is integrally formed at the top end of the sleeve (62). A conical disc (64) is slidably installed on the sleeve (62). Multiple limiting rods (65) are evenly installed at the bottom end of the disc (63). A through hole is provided on the conical disc (64) to slide with the multiple limiting rods (65). The anchoring tube (54) extends into the conical disc. One end of the mounting cavity (503) is fitted with a sealing block (66) that fits against the conical disk (64). An infrared rangefinder (67) is fixedly installed on the side of the disk (63) facing the two sets of anchor pipes (54). The infrared rangefinder (67) is located directly above the conical disk (64). The infrared rangefinder (67) is electrically connected to a battery (68) and a radio frequency transmitter (69). The radio frequency transmitter (69) is communicatively connected to a host computer. The battery (68) and the radio frequency transmitter (69) are embedded in the sealing block (66).

3. A cable tower steel anchor head positioning device according to claim 1 or 2, characterized in that: The box girder plate (3) has a through groove (302) in the middle, and the fixed-spacing channel steel (2) has installation door openings (201) on both sides. The inner side wall of the fixed-spacing channel steel (2) is equipped with a ladder tread (23) leading to the installation door opening (201).

4. A cable tower steel anchor head positioning device according to claim 1 or 2, characterized in that: The bottom end of the fixed-distance channel steel (2) is provided with a connecting foot (21) for docking installation, and the connecting foot (21) is provided with a threaded hole for installation; both the upper and lower ends of the box girder plate (3) are provided with a recess (301) for inserting and cooperating with the fixed-distance channel steel (2), and the box girder plate (3) of each set of anchor head positioning mechanism is inserted into the top of the corresponding fixed-distance channel steel (2); the fixed-distance channel steel (2) of the lowest anchor head positioning mechanism is fixed to the bottom of the hollow groove (101) by bolts, and the bottom end of the fixed-distance channel steel (2) of each other set of anchor head positioning mechanism is inserted into and fixed in the recess (301) at the top of the box girder plate (3) of the adjacent anchor head positioning mechanism.

5. A cable tower steel anchor head positioning device according to claim 1 or 2, characterized in that: The fixed-distance channel steel (2) has embedded web plates (22) welded to the outer walls on both sides. The end of the embedded web plate (22) away from the fixed-distance channel steel (2) is welded to the bottom of the second steel bracket (7). Multiple anchoring steel bars are welded on the embedded web plate (22) and are cast into one piece with the bridge tower (1) through the multiple anchoring steel bars.

6. A cable tower steel anchor head positioning device according to claim 1 or 2, characterized in that: Multiple shear studs are welded on the second steel bracket (7). When binding the cast steel bars of the bridge tower (1), the multiple shear studs on the second steel bracket (7) are bound together with the cast steel bars of the bridge tower (1), so that the second steel bracket (7) and the bridge tower (1) are pre-embedded and anchored during concrete pouring.

7. A cable tower steel anchor head positioning device according to claim 1 or 2, characterized in that: The anchor base plate (51) has multiple mounting holes (501) evenly opened on both sides. The anchor base plate (51) of each anchoring assembly (5) is fixedly connected to the corresponding first steel bracket (4) by multiple connecting screws (41). Multiple ribs (521) are welded between the two side plates (52) of each anchoring assembly (5) and the anchor base plate (51).

8. A cable tower steel anchor head positioning device according to claim 1 or 2, characterized in that: Each anchoring assembly (5) has symmetrically provided positioning grooves (502) on both sides of the side plates (52), and the two sides of the positioning block (53) are inserted into the positioning grooves (502) of the side plates (52); the steel cover plate (55) is detachably connected to the two side plates (52) by bolts, and the bottom end of the steel cover plate (55) is symmetrically provided with protrusions (551) that are inserted into the top of the positioning grooves (502).

9. A construction method for the cable tower steel anchor head positioning device as described in any one of claims 1 to 8, characterized in that, Specifically, the steps are as follows; S1. Elevation Positioning: First, according to the design requirements of the pylon, the lower half of the bridge pier is constructed until the top reaches the elevation of the bottom of the hollow channel. During the construction process, the elevation of the bridge tower is positioned using a total station. Then, the height of each layer of steel anchor heads is marked using a total station. The bottom layer of spaced channel steel is fixed to the bottom of the hollow channel. Then, the remaining spaced channel steel is stacked and fixed in sequence using box girder plates according to the marked steel anchor head height. S2. Anchoring Installation: Two sets of anchoring components at the same elevation are installed on both sides of the box girder plate using bolts through the first steel bracket; specifically, the anchoring components are connected to the first steel bracket by bolts through the anchor base plate, and then the positioning block with the anchoring pipe welded on it is inserted between the two sets of side plates; after positioning, the monitoring component is installed on each side anchoring component; S3. Installation of embedded parts: The second steel bracket is installed on one side of the anchor base plate and anchoring steel bars are set for the bridge tower to be cast. Then, embedded web plates are set on both sides of the spaced channel steel and the embedded web plates are welded or tied to the steel cage for the cable tower to be cast. S4. Pouring Position Monitoring: After the installation of the embedded parts is completed, the mold used for the pouring of the bridge tower is fixed on the bridge tower using a climbing frame. The climbing frame is used to climb the bridge tower step by step to pour concrete. During the pouring, the position of the anchor pipe is monitored using monitoring components. If any abnormal data is found, timely adjustments are made before the pouring is completed.

10. A construction method for a cable tower steel anchor head positioning device according to claim 9, characterized in that: The monitoring components include a positioning tube, a conical disk, and two sets of infrared rangefinders; During the monitoring component installation in step S2, the positioning tube is installed at the bottom center of the steel cover plate of the anchoring component. A sleeve is threaded onto the bottom end of the positioning tube. The conical disc is inserted into the sleeve and can slide on the sleeve. A disc is integrally formed at the top of the sleeve. A sealing block is fixedly connected to the end of the anchoring tube that extends into the installation cavity. After the anchoring tube is inserted into the installation cavity, the sealing block is aligned with the conical disc. Two sets of infrared rangefinders are installed on the side of the disc facing the two sets of anchoring tubes, with the infrared rangefinders located directly above the conical disc. Each set of infrared rangefinders is electrically connected to a battery and an RF transmitter. The battery and RF transmitter are embedded in the sealing block. The infrared rangefinders communicate via the RF transmitter. Connect to the host computer; after the monitoring components are installed, fix the steel cover plate to the two sets of side plates with bolts to seal the installation cavity; when the anchor pipe is subjected to a large impact during concrete pouring in step S4, and the anchor pipe moves up and down, the sealing block moves synchronously with the anchor pipe. During the movement, the sealing block pushes the conical disc to move synchronously along the sleeve. During the movement, the distance from the top of the conical disc to the infrared rangefinder is measured using an infrared rangefinder, and then the data is transmitted to the host computer using an RF transmitter. The host computer collects the data to monitor the position of the anchor pipe during the pouring process. When abnormal data is detected, timely adjustments are made before the pouring is completed.

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