The cable-stayed arch structure and its construction method

Abstract

This invention relates to the field of arch bridge construction technology, and in particular to a cable-stayed system device and construction method for cantilevered basket arches. The cable-stayed system device includes: a cable tower, which utilizes the lower structure of a cable tower and integrates it into the structure; a steel anchor box, installed on the cable tower; cable-stayed ropes, composed of steel strands, divided into front cable-stayed ropes and back cable-stayed ropes; an anchor gauge to measure the tension of the cable-stayed ropes; anchor components, including anchor plates, clamp-type anchor plates, working clamps, compression sleeves, and limiting plates; a connecting box for connecting the front cable-stayed ropes to the basket arch; a connector for connecting the back cable-stayed ropes to the ground anchor cables; and ground anchor cables that bear the tension of the back cable-stayed ropes. The anchor plates and the steel anchor box slide in a spherical contact, ensuring that the cable-stayed ropes maintain a straight stress state. In this invention, using the cable-stayed system device for cantilevered basket arch construction saves tower materials, improves the quality of cantilever construction, allows for safe and convenient adjustment of the cable-stayed ropes, and prevents cantilever collapse accidents caused by events such as bending and brittle fracture, overstretching and breakage, or anchor loosening.

Description

Technical Field

[0001] This invention relates to the field of arch bridge construction technology, and in particular to a cable-stayed system device and construction method for a suspended basket arch. Background Technology

[0002] In the construction of arch bridges spanning river valleys, existing technologies typically employ a cable-stayed hoisting method to symmetrically cantilever and splice the main arch segment by segment from the arch feet to the arch crown until closure. Each side of the main arch rib is divided into multiple symmetrical segments. First, towers and cable cranes are erected on the slopes on both sides of the valley. Then, the cable cranes lift the assembled segments and connect them to the previous segments. These segments are then temporarily fixed to the towers using cable-stayed hoisting. The subsequent segments are then installed sequentially and symmetrically until the main arch is formed. The cable-stayed cables are made of steel strand. To meet the alignment requirements before the main arch is closed, the length of the cable-stayed cables needs to be adjusted multiple times during the arch rib assembly process, including tensioning, loosening, and anchoring, using jacks at the anchoring ends.

[0003] However, the traditional construction method of setting up the anchor tower and cable tower separately not only requires a large amount of steel for the tower material, but also makes it very difficult to find multiple tower installation locations on the river valley slope and carry out the installation. Moreover, the lack of ventilation cables between the independent anchor towers reduces the stability of their tops. Furthermore, the traditional cable system is not only cumbersome to adjust the tension of the cable during the basket arch assembly process, but also prone to bending, brittle breakage, overstretching and breakage, and anchor loosening during operation, which can lead to the collapse of the main arch. Summary of the Invention

[0004] This invention aims to solve the technical problems existing in related technologies. To this end, this invention proposes a cable-stayed system device and its construction method for a suspended basket arch. By utilizing the lower structure of the tower and integrating it into a single structure, the number of towers required is reduced, and steel material for the cable-stayed system is saved. The spherical sliding contact between the anchor plate and the anchor seat prevents brittle fracture due to bending stress on the cable. An anchor gauge and reading instrument installed between the clamp-type anchor plate and the anchor pad plate synchronously display the tension of the cable, preventing over-tensioning that could lead to breakage. Anti-loosening limiting plates are installed on the anchor clamps to prevent cable detachment and loosening, and with the assistance of the tensioning reaction frame, cable adjustment is safe and convenient. The longitudinal and transverse wind cables at the top of the tower help control the top deviation of the tower during operation.

[0005] In a first aspect, the present invention provides a fastening system device for a suspended basket arch, comprising: The cable tower is a structure that utilizes the lower part of the cable tower and integrates it into the structure. Steel anchor boxes are installed on the anchor tower; The buckle is composed of steel strands and is divided into front buckle and back buckle. Anchor cable gauge, used to measure the tension of the cable; Anchoring components include anchor plates, anchor plates, working clips, compression sleeves, and limiting plates. Anchor plates include P-type anchor plates and clip-type anchor plates. P-type anchor plates are used for the fixed end of the steel strand, and clip-type anchor plates are used for the tensioning end of the steel strand. Connecting box for front buckle connection to the basket arch; Connector for back-locking cable connection to ground anchor cable; Ground anchor cables bear the tension of back-fastening cables; The anchor plate and the steel anchor box slide in a spherical contact, so that the sling remains under linear stress.

[0006] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the fastening tower comprises: The column structure consists of several columns that extend vertically and are stacked sequentially from the ground upwards; The web structure includes several web members, each web member being a straight rod with both ends extending to two adjacent uprights.

[0007] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the connecting box includes: The top plate has a spherical concave surface; P-type anchor plate, wherein a spherical convex surface is provided on one side of the P-type anchor plate and is slidably connected to the spherical concave surface of the top plate; Extrusion sleeve, used to securely connect with the cable strand to form the front cable anchorage end; The steel strand passes through the anchor hole and is supported by the P-type anchor plate through the pre-fixed compression sleeve at its tail. The stretching angle of the steel strand can be adjusted when the P-type anchor plate swings relative to the top plate.

[0008] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the anchor includes: An anchor plate, one end of which is provided as a spherical convex surface and the other end of which is provided as a flat surface; A wedge-type anchor plate is provided with several anchor holes, the sidewalls of which are conical and extend through both ends of the wedge-type anchor plate; The working clamp is movably embedded in the anchor hole. The working clamp has a first channel along its central axis for passing through the steel strand. The diameter of the first channel decreases as the depth of the working clamp embedded in the anchor hole increases. A limiting plate, including an adjusting rod, is used to prevent the working clamp from moving out of the anchor hole; The adjusting rod is provided with a second channel for threading steel strands through both ends of the adjusting rod.

[0009] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein an anchor seat is provided at each end of the steel anchor box, the anchor seat is provided with a spherical concave sidewall, and the anchor plate slides against the spherical concave sidewall with a spherical convex surface.

[0010] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the anchor cable includes: A circular sleeve is sandwiched between the anchor plate and the clip-type anchor plate; The reading instrument is used to display the tension value of the cable. When the tension of the cable exceeds the set value due to other factors during operation, it issues an early warning, prompting the work to be suspended, the cause to be identified, or the construction plan to be adjusted, so as to avoid the cable breaking due to overstretching.

[0011] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the connector includes a threaded connector, a sleeve and an anchor plate, and two sleeves are respectively installed at both ends of the threaded connector; The sleeve is provided with a tapered receiving hole, and several anchor plates are embedded in the receiving hole and arranged in a circle. By increasing the depth of the threaded connector embedded in the sleeve, the steel strand can be clamped.

[0012] According to the present invention, a cable-stayed system device for a suspended basket arch includes a guide cap, a shrinking positioning ring, an expanding positioning ring, a grouting pipe, and steel strands. Several shrink positioning rings and several expansion positioning rings are alternately arranged along the length of the grouting pipe to disperse the steel strands in the cement grout, and to anchor the steel strands to the stratum after the grout solidifies.

[0013] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the working clamp includes three symmetrical arc-shaped pieces, one side of the arc-shaped pieces is configured as a conical curved surface, and the other side of the arc-shaped pieces is configured as a plane with a groove; The three arc-shaped pieces are arranged opposite each other with respect to the groove to form the first channel.

[0014] According to the present invention, a buckle system device for a suspended basket arch is provided, wherein the groove wall is provided with ratchet teeth for anti-slip.

[0015] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the ratchet extends along the circumferential direction of the first channel; Several ratchet teeth are spaced apart along the central axis of the first channel. According to a cable-stayed system device for a suspended basket arch provided by the present invention, the limiting plate includes counter-pressure members spaced apart from the clamp-type anchor plate. The counter-pressure members are provided with several connecting holes for installing the adjusting rod; each connecting hole corresponds to one of the anchor holes, and the diameter of the connecting hole is 2mm larger than the upper diameter of the anchor hole, allowing the working clamps that hold the steel strands to pass smoothly through the connecting holes.

[0016] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the connecting hole is provided with an internal thread, and the adjusting rod is provided with an external thread and is movably inserted through the connecting hole via a threaded connection.

[0017] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein one end of the adjusting rod is provided with an external thread of equal length to the thickness of the counter-pressure member, and the other end of the adjusting rod is provided with a positioning ring protruding radially from the external thread, the positioning ring being located on the side of the counter-pressure member opposite to the working clamp.

[0018] According to the present invention, a fastening system device for a suspended basket arch is provided, wherein the limiting plate includes bolts for adjusting the distance between the counter-pressure member and the clip-type anchor plate; The counter-pressure component is provided with a number of through holes distributed along its circumference, the clamp-type anchor plate is provided with threaded holes corresponding to the through holes, and the bolt passes through the through holes and is connected to the threaded holes.

[0019] Secondly, the present invention provides a construction method for a fastening system device, employing the fastening system device for a suspended basket arch as described in any one of the above claims, the construction method comprising: S1. Construction site anchor cable: Drill holes first, then fabricate and install the anchor cable body, then grout for anchoring, and finally conduct a load test. S2. Install steel anchor boxes: The steel box beam supporting the steel anchor boxes is connected and fixed between the tower columns with high-strength bolts, and then the steel anchor boxes are connected and fixed to the top of the steel box beam with high-strength bolts. S3. Making the fastening cable: Cut the steel strands into pieces and number them. Use a special jack to perform P-anchor extrusion processing on the front fastening cable steel strands. S4. Threading the buckle cable: Connect each back buckle cable strand to the ground anchor cable strand using a connector. Thread each front buckle cable strand through the P-shaped anchor plate and top plate of the connection box and comb the strands to prevent them from getting tangled. S5. Hooking cable: Before the arch rib is installed in place, drag the tension end steel strand of the front hooking cable and the tension end steel strand of the back hooking cable to the vicinity of the steel anchor box, pass them through the anchor seat, anchor plate, cable tension gauge and clamp-type anchor plate in sequence, and then temporarily lock and fix them with working clamps. After the arch rib is installed in place, the fixing end connector of the front fastener is hoisted to the arch rib fastening point for installation. S6. Tighten the cable: Use the front clamp jack to symmetrically tension the cable strands at both ends of the steel anchor box to 50% of the design tension. Then, screw the adjusting rod of the limiting plate to the limiting depth of 7mm, attach the clamp-type anchor plate tightly, and tighten the 4 bolts of the limiting plate. S7. Tensioning cable: The tensioning jack is installed at the tensioning end of the cable and the steel strands of the front cable and the back cable are tensioned in stages and simultaneously. At the same time, the corresponding lifting point force of the cable crane is unloaded in stages until all the lifting point force of the cable crane is transferred to the front cable. After the force system conversion is completed, the hook of the cable crane is removed. The tensioning of the front cable is mainly controlled by the arch rib elevation and secondarily by the cable force. The tensioning of the back cable is mainly controlled by the tower top offset and secondarily by the cable force. Subsequent tensioning is carried out synchronously and symmetrically at 80% and 100% tension force. At the same time, the cable tension transmitted by the cable force gauge is tested with a spectrum analyzer to avoid over-tensioning. S8. Adjusting the ties: Install reaction frames on the anchor plates at both ends of the steel anchor box, then install tension jacks and tool anchors. The elevation of the main arch line is adjusted by tensioning or loosening the ties. When it is necessary to add tensioning cables to raise the main arch alignment, the tensioning jacks supply oil, and after tensioning, the oil is returned for anchoring. When it is necessary to loosen the slings to lower the main arch line, after the piston of the tensioning jack extends three-quarters of its stroke, install the tool anchor, then supply oil to the anchor hole of the working clamp plate extending out of the clamp-type anchor plate and temporarily fix the working clamp plate outside the anchor hole. Then return the oil to release the steel strand until the calculated length value, adjust the rod to return to the position, push the working clamp plate into the anchor hole and tighten it to tighten the working clamp plate. Finally, return the oil with the tensioning jack to anchor. S9. Removal of the ties: After the main arch ring is closed, each ties are unloaded in stages according to the ties loosening steps, proceeding synchronously and symmetrically from the arch top to the arch foot. After multiple cycles of loosening, the ties are removed when all tension is unloaded to zero, thus completing the system conversion.

[0020] The above-described one or more technical solutions of this invention have at least one of the following technical effects: 1. In this invention, the use of a cable system to suspend the basket arch can save tower materials, improve the quality of suspension, and allow for safe and convenient adjustment of the cable. It can also prevent suspension collapse accidents caused by events such as bending and brittle breakage, overstretching and breakage, and anchor loosening of the cable.

[0021] 2. In this invention, the front and back cable strands are connected as a whole by a steel anchor box, which can also form one-to-one or one-to-many connection forms. The front and back cable strands are relatively independent in terms of force, and the cable force can be adjusted freely without affecting each other in terms of adjustment time and magnitude. The anchor seat and anchor plate of the steel anchor box are connected by a spherical sliding connection, and the clip-type anchor plate is installed on the anchor plate, which can swing freely in all directions within a certain angle relative to the steel anchor box. This allows the tensioning ends of the front and back cable strands to adaptively adjust the stretching angle of the strands as the height and lateral position of the main arch segment changes during the assembly process, preventing brittle fracture caused by bending stress.

[0022] 3. In this invention, a ring sleeve of the anchor cable gauge is placed between the anchor plate and the clamp-type anchor plate. The tension value of the cable is displayed around the clock by the measuring instrument. When the tension of the cable exceeds the set value due to other factors during operation, an early warning is issued, prompting the suspension of construction, investigation of the cause or adjustment of the construction plan, so as to avoid the cable breaking due to overstretching.

[0023] 4. In this invention, a limiting plate is provided at the tensioning end of the cable to prevent the clamps from loosening under low stress conditions. The counter-pressure component of the limiting plate is fixed to the clamp-type anchor plate with bolts. The adjusting rod of the limiting plate is rotated out by 7mm before the jack tensions to meet the tensioning requirement that the clamps do not bite the steel strands. After the jack is unloaded, the adjusting rod is rotated in to press down the top of the clamps, so as to avoid the clamps from loosening and causing the anchor to come loose.

[0024] 5. In this invention, by using the lower structure of the cable tower and integrating it into the tower structure, not only are the materials for the tower secured, but the longitudinal and transverse wind cables at the top of the cable tower also help control the deviation of the top of the tower during operation.

[0025] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted by the present invention, and the advantages brought about by the technical features of these technical solutions as described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or will be learned through the practice of the present invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic elevation view of the basket arch suspended using the diagonal fastening method, provided in an embodiment of the present invention.

[0028] Figure 2 This is a schematic elevation view of the components of the buckle system device provided in an embodiment of the present invention.

[0029] Figure 3 This is a plan view of the buckle arrangement provided in an embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the buckle structure provided in an embodiment of the present invention.

[0031] Figure 5 This is a schematic diagram of a steel anchor box provided in an embodiment of the present invention.

[0032] Figure 6 This is a cross-sectional view of the cable tensioning end assembly structure provided in an embodiment of the present invention.

[0033] Figure 7 This is a three-dimensional structural diagram of the connection box provided in an embodiment of the present invention.

[0034] Figure 8 This is a schematic diagram of the connection between the connecting box and the arch rib segment provided in an embodiment of the present invention.

[0035] Figure 9 This is a cross-sectional view of the connector for the back fastening cable fixing end provided in an embodiment of the present invention.

[0036] Figure 10 This is a schematic diagram of the anchor body structure of the ground anchor cable provided in an embodiment of the present invention.

[0037] Figure 11 This is a three-dimensional structural diagram of a combination of a clip-on anchor plate, a working clip, and a limiting plate provided in an embodiment of the present invention.

[0038] Figure 12 This is a front view of the clip-on anchor plate provided in an embodiment of the present invention.

[0039] Figure 13 for Figure 12 Sectional view of section BB.

[0040] Figure 14 This is a three-dimensional structural diagram of the counter-pressure component provided in an embodiment of the present invention.

[0041] Figure 15 This is a three-dimensional structural diagram of the adjusting rod provided in an embodiment of the present invention.

[0042] Figure 16 This is a three-dimensional structural diagram of the working clip provided in an embodiment of the present invention.

[0043] Figure 17 This is a three-dimensional structural diagram of the reaction frame provided in an embodiment of the present invention.

[0044] Figure label: 100. Clip-on anchor plate; 110. Anchor hole; 120. Threaded hole; 200. Working clip; 210. First channel; 220. Arc-shaped piece; 221. Groove; 222. Racket; 300. Limiting plate; 310. Adjusting rod; 311. External thread; 312. Positioning ring; 313. Second channel; 320. Counter-pressure component; 321. Connecting hole; 322. Internal thread; 323. Through hole; 330. Bolt. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0046] In an embodiment of the present invention, a fastening system device for a suspended basket arch is described.

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, the cable system includes a cable tower, a steel anchor box, cable, an anchor gauge, anchoring components, a connecting box, a connector, and ground anchors. The cable tower utilizes the lower structure of the cable tower and is integrated into it; the steel anchor box is installed on the cable tower; the cable is composed of steel strands and is divided into front cable and back cable; the anchor gauge is used to measure the tension of the cable; the anchoring components include anchor plates, clamp-type anchor plates, working clamps, compression sleeves, and limiting plates; the connecting box is used to connect the front cable to the basket arch; the connector is used to connect the back cable to the ground anchor; the ground anchor bears the tension of the back cable.

[0048] Specifically, one end of the anchor plate is configured as a spherical convex surface, and the other end of the anchor plate is configured as a flat surface.

[0049] The clip-on anchor plate has several anchor holes. The sidewalls of the anchor holes are conical and extend through both ends of the clip-on anchor plate. The working clips are movably embedded in the anchor holes.

[0050] The working clamp has a first channel along its central axis for threading the steel strand. The diameter of the first channel decreases as the working clamp is embedded deeper into the anchor hole.

[0051] The compression sleeve is used to securely connect with the sling to form the front sling anchor end.

[0052] The limiting plate includes an adjusting rod to prevent the working clamp from moving out of the anchor hole. Furthermore, the adjusting rod has a second channel for threading the steel strand, the second channel extending through both ends of the adjusting rod.

[0053] The connecting box is used to connect the front buckle to the basket arch, and the connector is used to connect the back buckle to the ground anchor cable, which bears the tension of the back buckle.

[0054] The anchor plate and the steel anchor box slide in a spherical contact, so that the sling remains under linear stress.

[0055] like Figure 4 As shown, the tower includes a column structure and a web structure.

[0056] The column structure has columns extending vertically. Furthermore, several columns are stacked sequentially from the ground upwards.

[0057] The web structure includes several web members, each of which is a straight rod. Furthermore, both ends of each web member extend to two adjacent uprights.

[0058] An anchor seat is provided at each end of the steel anchor box. The anchor seat is provided with a spherical concave sidewall. The spherical sidewall is recessed into the interior of the anchor seat. The anchor plate slides against the spherical sidewall with a spherical convex surface.

[0059] like Figure 5 As shown, the anchor plate and anchor seat are slidably connected using a spherical concave surface and a spherical convex surface. The clip-type anchor plate is installed on the anchor plate and can swing freely in all directions within a certain angle relative to the steel anchor box. This allows the upper ends of the front and back cable strands to be fixed to the steel anchor box, thus adaptively adjusting the angle changes of the cable strands caused by changes in height and lateral position during the assembly of the main arch segment, maintaining a straight stress state at all times.

[0060] Meanwhile, the steel anchor box can be arranged in a very flexible position on the tower, which can convert the diagonal tension force applied to the tower by the steel strand into the vertical pressure of the tower and the horizontal force of the interaction, and can also meet the elevation requirements of the tensioning end of the cable.

[0061] like Figure 6 As shown, the sidewall of the anchor seat is designed as a spherical concave surface. Correspondingly, one side of the anchor plate is designed as a spherical convex surface. The anchor plate is slidably connected to the spherical concave sidewall of the anchor seat through the spherical convex surface.

[0062] Specifically, the anchor cable gauge includes a ring sleeve and a reader. The ring sleeve is sandwiched between the anchor plate and the clip-type anchor plate. The reader is used to display the tension value of the cable. When the tension of the cable exceeds the set value due to other factors during operation, it issues an early warning, prompting the suspension of construction, investigation of the cause, or adjustment of the construction plan to avoid the cable breaking due to overstretching.

[0063] like Figure 7 As shown, the connecting box is used to connect the main arch segments and mainly includes a top plate and a P-shaped anchor plate.

[0064] like Figure 8 As shown, connecting lugs are provided on the main arch segment. The front end of the fastening point connecting box is connected to the connecting lug, and the rear end is connected to the front fastening cable.

[0065] The top plate has a spherical concave surface. One side of the P-shaped anchor plate has a spherical convex surface. Furthermore, the P-shaped anchor plate is slidably connected to the spherical concave surface of the top plate.

[0066] The steel strand passes through the anchor hole and is supported by the P-type anchor plate through the pre-fixed extrusion sleeve at its tail. When the P-type anchor plate slides spherically relative to the top plate, the stretching angle of the steel strand can be adjusted to always maintain a straight force state.

[0067] like Figure 9 As shown, the connector includes a threaded connector, a sleeve, and an anchor plate, with two sleeves respectively installed at both ends of the threaded connector.

[0068] The sleeve is provided with a tapered receiving hole. Several anchor plates are embedded in the receiving hole and arranged in a circle. The steel strand can be clamped by increasing the depth of the threaded connector embedded in the sleeve.

[0069] like Figure 10 As shown, the ground anchor cable includes a guide cap, a contraction positioning ring, an expansion positioning ring, a grouting pipe, and steel strands.

[0070] Several shrinkage positioning rings and several expansion positioning rings are alternately arranged along the length of the grouting pipe to disperse the steel strands in the cement grout, and anchor them to the stratum after the grout solidifies.

[0071] In this embodiment, the suspension and assembly of the basket arch using the cable system not only saves cable tower materials and improves the quality of suspension and assembly, but also allows for safe and convenient adjustment of the cable. Furthermore, it prevents events such as bending and brittle breakage, overstretching and breakage, and anchor loosening that could cause the main arch to collapse during the suspension and assembly process. By using the cable tower to borrow the lower structure of the pylon and integrate it into the tower structure, the longitudinal and transverse wind cables at the top of the pylon help control the top deviation of the cable tower during the operation.

[0072] Based on the above embodiments, another embodiment of the present invention introduces a fastening system device for a suspended basket arch.

[0073] The limiting plate 300 includes bolts 330 for connecting and fixing the counter-pressure member 320 and the clip-type anchor plate 100.

[0074] The counter-pressure member 320 is provided with a plurality of through holes 323 distributed along its circumference.

[0075] like Figure 11 and Figure 12 As shown, the clip-on anchor plate 100 is provided with a threaded hole 120 corresponding to the through hole 323. The bolt 330 passes through the through hole 323. Furthermore, the bolt 330 is connected to the threaded hole 120.

[0076] The working clamp 200 includes three symmetrically structured arc-shaped pieces 220, such as... Figure 16 As shown, one side of the arc-shaped piece 220 is configured as a conical curved surface. The other side of the arc-shaped piece 220 is configured as a flat surface with a groove 221.

[0077] The three arc-shaped pieces 220 are arranged opposite each other with the groove 221 to form the first channel 210.

[0078] Furthermore, the groove wall of the groove 221 is provided with ratchet teeth 222 for anti-slip purposes.

[0079] Furthermore, the ratchet 222 extends along the circumferential direction of the first channel 210.

[0080] Furthermore, a plurality of the ratchet teeth 222 are spaced apart along the central axis of the first channel 210.

[0081] Based on the above embodiments, another embodiment of the present invention introduces a fastening system device for a suspended basket arch.

[0082] The limiting plate 300 includes a counter-pressure member 320 spaced apart from the clip-type anchor plate 100.

[0083] like Figure 14 As shown, the counter-pressure member 320 is provided with a plurality of connecting holes 321 for mounting the adjusting rod 310.

[0084] The connecting hole 321 corresponds one-to-one with the anchor hole 110. The diameter of the connecting hole is 2mm larger than the upper diameter of the anchor hole, allowing the working clamp that holds the steel strand to pass smoothly through the connecting hole.

[0085] Furthermore, the connecting hole 321 is provided with an internal thread 322. The adjusting rod 310 is provided with an external thread 311. In addition, the adjusting rod 310 is movably inserted through the connecting hole 321 via a threaded connection, and is used to adjust the distance between the adjusting rod 310 and the clip-type anchor plate 100.

[0086] In this embodiment, the adjusting rod 310 is threadedly connected to the counter-pressure member 320. After the steel strand is tensioned and subjected to force, the adjusting rod 310 can be rotated to increase the top pressure force on the working clamp 200, thereby avoiding the loosening of the steel strand due to wear and preventing the anchoring accident.

[0087] Based on the above embodiments, another embodiment of the present invention introduces a fastening system device for a suspended basket arch.

[0088] One end of the adjusting rod 310 is provided with an external thread 311. The length of the external thread is equal to the thickness of the counter-pressure member. The other end of the adjusting rod 310 is provided with a positioning ring 312 that protrudes radially from the external thread 311.

[0089] The positioning ring 312 is located on the side of the counter-pressure member 320 that is away from the working clamp 200.

[0090] Based on the above embodiments, another embodiment of the present invention introduces a fastening system device for a suspended basket arch.

[0091] The limiting plate 300 includes bolts 330 for connecting and fixing the counter-pressure member 320 and the clip-type anchor plate 100.

[0092] The counter-pressure member 320 is provided with a plurality of through holes 323 distributed along its circumference.

[0093] like Figure 15 As shown, the adjusting rod 310 is provided with a second channel 313 for threading the steel strand. The second channel 313 extends through both ends of the adjusting rod 310. The diameter of the anchor hole 110 is 2-3 mm smaller than the outer diameter of the working clamp 200 after it engages the steel strand, to ensure that the working clamp 200 can move axially along the anchor hole 110 to clamp the steel strand with approximately 3 mm exposed.

[0094] In this embodiment, by setting the limiting plate 300, the depth of the working clamp 200 embedded in the anchor hole 110 can be adjusted synchronously to ensure that the clamping tightness of each steel strand and the working clamp 200 is the same, and to prevent the steel strand from loosening from the working clamp 200.

[0095] Based on the above embodiments, another embodiment of the present invention introduces a fastening system device for a suspended basket arch.

[0096] The limiting plate 300 includes a counter-pressure member 320 spaced apart from the clip-type anchor plate 100.

[0097] like Figures 11 to 16As shown, the clip-on anchor plate 100 is provided with a plurality of anchor holes 110. The sidewalls of the anchor holes 110 are conical. Furthermore, the anchor holes 110 extend through both ends of the clip-on anchor plate 100.

[0098] The working clamp 200 is movably embedded in the anchor hole 110. The working clamp 200 has a first channel 210 for threading the steel strand along its central axis.

[0099] The diameter of the first channel 210 decreases as the depth of the working clip 200 embedded in the anchor hole 110 increases.

[0100] The limiting plate 300 includes an adjusting rod 310. The adjusting rod 310 is used to prevent the working clamp 200 from moving out of the anchor hole 110. By setting the limiting plate 300, the depth of the working clamp 200 embedded in the anchor hole 110 can be adjusted synchronously to ensure that the clamping tightness of each steel strand and the working clamp 200 is the same, and to prevent the steel strand from becoming loose from the working clamp 200 and causing an anchoring accident.

[0101] In another embodiment of the present invention, a method for constructing a buckle system device is described.

[0102] The construction method employs the cable-stayed system device for the suspended basket arch described in any of the above embodiments. The specific construction method includes: S1. Construction site anchor cable: Drill holes first, then fabricate and install the anchor cable body, then grout for anchoring, and finally conduct a load test. S2. Install steel anchor boxes: The steel box beam supporting the steel anchor boxes is connected and fixed between the tower columns with high-strength bolts, and then the steel anchor boxes are connected and fixed to the top of the steel box beam with high-strength bolts. S3. Making the fastening cable: Cut the steel strands into pieces and number them. Use a special jack to perform P-anchor extrusion processing on the front fastening cable steel strands. S4. Threading the buckle cable: Connect each back buckle cable strand to the ground anchor cable strand using a connector. Thread each front buckle cable strand through the P-shaped anchor plate and top plate of the connection box and comb the strands to prevent them from getting tangled. S5. Hooking cable: Before the arch rib is installed in place, drag the tension end steel strand of the front hooking cable and the tension end steel strand of the back hooking cable to the vicinity of the steel anchor box, pass them through the anchor seat, anchor plate, cable tension gauge and clamp-type anchor plate in sequence, and then temporarily lock and fix them with working clamps. After the arch rib is installed in place, the fixing end connector of the front fastener is hoisted to the arch rib fastening point for installation. S6. Tighten the cable: Use the front clamp jack to symmetrically tension the cable strands at both ends of the steel anchor box to 50% of the design tension. Then, screw the adjusting rod of the limiting plate to the limiting depth of 7mm, attach the clamp-type anchor plate tightly, and tighten the 4 bolts of the limiting plate. S7. Tensioning cable: The tensioning jack is installed at the tensioning end of the cable and the steel strands of the front cable and the back cable are tensioned in stages and simultaneously. At the same time, the corresponding lifting point force of the cable crane is unloaded in stages until all the lifting point force of the cable crane is transferred to the front cable. After the force system conversion is completed, the hook of the cable crane is removed. The tensioning of the front cable is mainly controlled by the arch rib elevation and secondarily by the cable force. The tensioning of the back cable is mainly controlled by the tower top offset and secondarily by the cable force. Subsequent tensioning is carried out synchronously and symmetrically at 80% and 100% tension force. At the same time, the cable tension transmitted by the cable force gauge is tested with a spectrum analyzer to avoid over-tensioning. S8. Adjusting the ties: Install reaction frames on the anchor plates at both ends of the steel anchor box, then install tension jacks and tool anchors. The elevation of the main arch line is adjusted by tensioning or loosening the ties. When it is necessary to add tensioning cables to raise the main arch alignment, the tensioning jacks supply oil, and after tensioning, the oil is returned for anchoring. When it is necessary to loosen the slings to lower the main arch line, after the piston of the tensioning jack extends three-quarters of its stroke, install the tool anchor, then supply oil to the anchor hole of the working clamp plate extending out of the clamp-type anchor plate and temporarily fix the working clamp plate outside the anchor hole. Then return the oil to release the steel strand until the calculated length value, adjust the rod to return to the position, push the working clamp plate into the anchor hole and tighten it to tighten the working clamp plate. Finally, return the oil with the tensioning jack to anchor. S9. Removal of the ties: After the main arch ring is closed, each ties are unloaded in stages according to the ties loosening steps, proceeding synchronously and symmetrically from the arch top to the arch foot. After multiple cycles of loosening, the ties are removed when all tension is unloaded to zero, thus completing the system conversion.

[0103] Specifically, the anchor seat and anchor plate of the steel anchor box are connected by a spherical sliding connection. The clip-type anchor plate is installed on the anchor plate and can swing freely in all directions within a certain angle relative to the steel anchor box. This allows the upper ends of the front and back cable strands to be fixed to the steel anchor box, thus adaptively adjusting the angle changes of the cable strands caused by changes in height and lateral position during the assembly of the main arch segment, maintaining a straight stress state at all times.

[0104] Meanwhile, the steel anchor box can be arranged in a very flexible position on the tower, which can convert the diagonal tension force applied to the tower by the steel strand into the vertical pressure of the tower and the horizontal force of the interaction, and can also meet the elevation requirements of the tensioning end of the cable.

[0105] Furthermore, by using the lower structure of the tower and integrating it into the tower structure, the longitudinal and transverse ventilation cables at the top of the tower help control the deviation of the tower during the working process at the top.

[0106] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0107] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0108] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0109] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms are not limited to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fastening system device for a suspended basket arch, characterized in that, include: The cable tower is a structure that utilizes the lower part of the cable tower and integrates it into the structure. Steel anchor boxes are installed on the anchor tower; The buckle is composed of steel strands and is divided into front buckle and back buckle. Anchor cable gauge, used to measure the tension of the cable; Anchoring components include anchor plates, anchor plates, working clips, compression sleeves, and limiting plates. Anchor plates include P-type anchor plates and clip-type anchor plates. P-type anchor plates are used for the fixed end of the steel strand, and clip-type anchor plates are used for the tensioning end of the steel strand. Connecting box for front buckle connection to the basket arch; Connector for back-locking cable connection to ground anchor cable; Ground anchor cables bear the tension of back-fastening cables; The anchor plate and the steel anchor box slide in a spherical contact, so that the sling remains under linear stress.

2. The fastening system device for the suspended basket arch according to claim 1, characterized in that, The buckle tower includes: The column structure consists of several columns that extend vertically and are stacked sequentially from the ground upwards; The web structure includes several web members, each web member being a straight rod with both ends extending to two adjacent uprights.

3. The fastening system device for the suspended basket arch according to claim 1, characterized in that, The connection box includes: The top plate has a spherical concave surface; P-type anchor plate, wherein a spherical convex surface is provided on one side of the P-type anchor plate and is slidably connected to the spherical concave surface of the top plate; Extrusion sleeve, used to securely connect with the cable strand to form the front cable anchorage end; The steel strand passes through the anchor hole and is supported by the P-type anchor plate through the pre-fixed compression sleeve at its tail. The stretching angle of the steel strand can be adjusted when the P-type anchor plate swings relative to the top plate.

4. The fastening system device for the suspended basket arch according to claim 1, characterized in that, The anchor includes: An anchor plate, one end of which is provided as a spherical convex surface and the other end of which is provided as a flat surface; The clip-on anchor plate (100) is provided with a plurality of anchor holes (110), the sidewalls of the anchor holes (110) are conical and extend through both ends of the clip-on anchor plate (100); The working clamp (200) is movably embedded in the anchor hole (110). The working clamp (200) has a first channel (210) for passing through the steel strand along its central axis. The diameter of the first channel (210) decreases as the depth of the working clamp (200) embedded in the anchor hole (110) increases. The limiting plate (300) includes an adjusting rod (310) for preventing the working clamp (200) from moving out of the anchor hole (110); The adjusting rod (310) is provided with a second channel (313) for threading steel strands through it, and the second channel (313) passes through both ends of the adjusting rod (310).

5. The fastening system device for the suspended basket arch according to claim 1, characterized in that, An anchor seat is provided at each end of the steel anchor box. The anchor seat is provided with a spherical concave sidewall. The anchor plate slides against the spherical concave sidewall with a spherical convex surface.

6. The fastening system device for the suspended basket arch according to claim 1, characterized in that, The anchor cable gauge includes: A circular sleeve is sandwiched between the anchor plate and the clip-type anchor plate; The reading instrument is used to display the tension value of the cable. When the tension of the cable exceeds the set value due to other factors during operation, it issues an early warning, prompting the work to be suspended, the cause to be identified, or the construction plan to be adjusted, so as to avoid the cable breaking due to overstretching.

7. The fastening system device for the suspended basket arch according to claim 1, characterized in that, The connector includes a threaded connector, a sleeve, and an anchor plate, with the two sleeves respectively installed at both ends of the threaded connector; The sleeve is provided with a tapered receiving hole, and several anchor plates are embedded in the receiving hole and arranged in a circle. By increasing the depth of the threaded connector embedded in the sleeve, the steel strand can be clamped.

8. The fastening system device for the suspended basket arch according to claim 1, characterized in that, The ground anchor cable includes a guide cap, a shrink positioning ring, an expandable positioning ring, a grouting pipe, and steel strands; Several shrinkage positioning rings and several expansion positioning rings are alternately arranged along the length of the grouting pipe to disperse the steel strands in the cement grout, and anchor the steel strands to the stratum after the grout solidifies.

9. The fastening system device for the suspended basket arch according to claim 4, characterized in that, The working clamp (200) includes three symmetrical arc-shaped pieces (220), one side of which is set as a conical curved surface and the other side of which is set as a plane with a groove (221); The three arc-shaped pieces (220) are arranged opposite each other with the groove (221) to form the first channel (210).

10. The fastening system device for the suspended basket arch according to claim 9, characterized in that, The groove (221) has ratchet teeth (222) on its groove wall for anti-slip purposes.

11. The fastening system device for the suspended basket arch according to claim 10, characterized in that, The ratchet (222) extends along the circumferential direction of the first channel (210); Several of the ratchet teeth (222) are spaced apart along the central axis of the first channel (210).

12. The fastening system device for the suspended basket arch according to claim 4, characterized in that, The limiting plate (300) includes a counter-pressure member (320) spaced apart from the clamp-type anchor plate (100). The counter-pressure member (320) is provided with a plurality of connecting holes (321) for installing the adjusting rod (310). The connecting holes (321) correspond one-to-one with the anchor holes (110). The diameter of the connecting hole (321) is 2mm larger than the upper diameter of the anchor hole (110), which facilitates the smooth passage of the working clamp (200) that holds the steel strand through the connecting hole (321).

13. The fastening system device for the suspended basket arch according to claim 12, characterized in that, The connecting hole (321) is provided with an internal thread (322), and the adjusting rod (310) is provided with an external thread (311) and is movably inserted into the connecting hole (321) through a threaded connection.

14. The fastening system device for the suspended basket arch according to claim 13, characterized in that, One end of the adjusting rod (310) is provided with an external thread (311) of the same length as the thickness of the counter-pressure member (320), and the other end of the adjusting rod (310) is provided with a positioning ring (312) that protrudes radially from the external thread (311). The positioning ring (312) is located on the side of the counter-pressure member (320) away from the working clamp (200).

15. The fastening system device for the suspended basket arch according to any one of claims 12 to 14, characterized in that, The limiting plate (300) includes bolts (330) for adjusting the distance between the counter-pressure member (320) and the clip-type anchor plate (100). The counter-pressure member (320) is provided with a plurality of through holes (323) distributed along its circumference, the clip-type anchor plate (100) is provided with threaded holes (120) corresponding to the through holes (323), and the bolt (330) passes through the through holes (323) and is connected to the threaded holes (120).

16. A construction method for a buckle system device, characterized in that, The construction method using the cable-stayed system device for the suspended basket arch as described in any one of claims 1 to 15 includes: S1. Construction site anchor cable: Drill holes first, then fabricate and install the anchor cable body, then grout for anchoring, and finally conduct a load test. S2. Install steel anchor boxes: The steel box beam supporting the steel anchor boxes is connected and fixed between the tower columns with high-strength bolts, and then the steel anchor boxes are connected and fixed to the top of the steel box beam with high-strength bolts. S3. Making the fastening cable: Cut the steel strands into pieces and number them. Use a special jack to perform P-anchor extrusion processing on the front fastening cable steel strands. S4. Threading the buckle cable: Connect each back buckle cable strand to the ground anchor cable strand using a connector. Thread each front buckle cable strand through the P-shaped anchor plate and top plate of the connection box and comb the strands to prevent them from getting tangled. S5. Hooking cable: Before the arch rib is installed in place, drag the tension end steel strand of the front hooking cable and the tension end steel strand of the back hooking cable to the vicinity of the steel anchor box, pass them through the anchor seat, anchor plate, cable tension gauge and clamp-type anchor plate in sequence, and then temporarily lock and fix them with working clamps. After the arch rib is installed in place, the fixing end connector of the front fastener is hoisted to the arch rib fastening point for installation. S6. Tighten the cable: Use the front clamp jack to symmetrically tension the cable strands at both ends of the steel anchor box to 50% of the design tension. Then, screw the adjusting rod of the limiting plate to the limiting depth of 7mm, attach the clamp-type anchor plate tightly, and tighten the 4 bolts of the limiting plate. S7. Tensioning cable: The tensioning jack is installed at the tensioning end of the cable and the steel strands of the front cable and the back cable are tensioned in stages and simultaneously. At the same time, the corresponding lifting point force of the cable crane is unloaded in stages until all the lifting point force of the cable crane is transferred to the front cable. After the force system conversion is completed, the hook of the cable crane is removed. The tensioning of the front cable is mainly controlled by the arch rib elevation and secondarily by the cable force. The tensioning of the back cable is mainly controlled by the tower top offset and secondarily by the cable force. Subsequent tensioning is carried out synchronously and symmetrically at 80% and 100% tension force. At the same time, the cable tension transmitted by the cable force gauge is tested with a spectrum analyzer to avoid over-tensioning. S8. Adjusting the ties: Install reaction frames on the anchor plates at both ends of the steel anchor box, then install tension jacks and tool anchors. The elevation of the main arch line is adjusted by tensioning or loosening the ties. When it is necessary to add tensioning cables to raise the main arch alignment, the tensioning jacks supply oil, and after tensioning, the oil is returned for anchoring. When it is necessary to loosen the slings to lower the main arch line, after the piston of the tensioning jack extends three-quarters of its stroke, install the tool anchor, then supply oil to the anchor hole of the working clamp plate extending out of the clamp-type anchor plate and temporarily fix the working clamp plate outside the anchor hole. Then return the oil to release the steel strand until the calculated length value, adjust the rod to return to the position, push the working clamp plate into the anchor hole and tighten it to tighten the working clamp plate. Finally, return the oil with the tensioning jack to anchor. S9. Removal of the ties: After the main arch ring is closed, each ties are unloaded in stages according to the ties loosening steps, proceeding synchronously and symmetrically from the arch top to the arch foot. After multiple cycles of loosening, the ties are removed when all tension is unloaded to zero, thus completing the system conversion.

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