CN113863137B - Adjustable skid-resistant base plate and stay cable saddle - Google Patents
Adjustable skid-resistant base plate and stay cable saddle Download PDFInfo
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- CN113863137B CN113863137B CN202111176664.XA CN202111176664A CN113863137B CN 113863137 B CN113863137 B CN 113863137B CN 202111176664 A CN202111176664 A CN 202111176664A CN 113863137 B CN113863137 B CN 113863137B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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Abstract
The invention discloses an adjustable anti-skid base plate and a stay cable saddle, which are used for being matched with the end part of a cable saddle of a wire separating pipe, and comprise a bottom plate and at least one adjusting base plate; the adjusting base plate is provided with a pore channel matched with at least one layer of the wire separating pipe, two sides of the adjusting base plate are connected with the outer end face of the bottom plate through an adjusting mechanism, and the inner end face of the bottom plate is matched with the end part of the cable saddle. The adjustable anti-sliding base plate and the stay cable saddle disclosed by the invention can compensate the machining error of at least one layer of anti-sliding keys of the prestressed tendons, reduce the machining precision of the prestressed tendons, improve the machining fault tolerance rate of the prestressed tendons, reduce the prefabricated variety of the prestressed tendons and reduce the error probability in construction.
Description
Technical Field
The invention relates to an anti-sliding structure of a cable saddle of a cable-stayed bridge, in particular to an adjustable anti-sliding base plate and a cable saddle of a cable-stayed bridge.
Background
At present, in order to prevent the stay cable steel strand from being worn inside the cable saddle, the anti-sliding keys which are respectively matched with the base plates at the two ends of the cable saddle are often installed at the two ends of the steel strand, and the steel strand is tensioned through a tensioning device, so that the prestress of the steel strand inside the cable saddle is greater than the prestress of the steel strand outside the cable saddle, and therefore, in the vibration process of the stay cable, the steel strand inside the cable saddle is in a static state, and the steel strand cannot be worn. However, the cable saddle has a certain radian, the lengths of the wire dividing pipes on each layer are different, and the base plates at the two ends of the cable saddle are both of a flat plate structure which cannot be adjusted, so that the distance between the anti-sliding keys on each layer of steel strands is fixed, once an error occurs in the machining process, the steel strands cannot be installed on the cable saddle according to the tensioning requirement, prefabrication of the steel strands with various distances and sizes is needed according to the lengths of the wire dividing pipes in the machining process, and errors and confusion are prone to occurring in the construction process.
Among the prior art, chinese patent CN109778698a discloses a cable-stayed bridge cable saddle with anti-sliding key device, including connecting piece, a protection section of thick bamboo, anti-sliding key device, cable saddle and by the cable of many constituteing with steel strand wires, the cable saddle passes through the connecting piece with the protection section of thick bamboo is connected, anti-sliding key device install in inside the protection section of thick bamboo, anti-sliding key device comprises first anti-sliding plate, open type anti-sliding key and second anti-sliding plate, first anti-sliding plate with the second anti-sliding plate is equipped with the through-hole that is used for wearing steel strand wires, is equipped with the breach along open type anti-sliding key pipe wall, and steel strand wires are put into through the breach inside the open type anti-sliding key, lock and spacing opening type anti-sliding key both ends through first anti-sliding plate and second anti-sliding plate. In the prior art, anti-sliding keys are arranged at the end faces of two ends of each steel strand at a cable saddle, so that the anti-sliding keys are matched with base plates at two ends of the cable saddle to realize an anti-sliding effect, but the base plates at two ends of the cable saddle are of a fixed and non-adjustable planar structure, so that the length of each layer of steel strand pipeline is fixed and unchanged, the machining precision of the steel strand with the anti-sliding keys is high, errors occur in the machining process of the steel strand, the steel strand cannot be compensated in the construction process, and only can be re-machined; in addition, need carry out the prefabrication of multiple interval size steel strand wires according to parameters such as different cable saddle radians, branch silk pipe length, cable power value in the course of working, the size of the anti-sliding key in steel strand wires both ends is more in the work progress, easily makes mistakes, easily chaos.
Disclosure of Invention
Aiming at the problems, the invention provides an adjustable anti-sliding base plate and a stay cable saddle, and aims to solve the problems that the existing base plate is of an unadjustable flat plate structure, the length of each layer of steel strand pipeline is fixed, so that the processing precision of steel strands with anti-sliding keys is high, the fault tolerance rate is low, the prefabrication of steel strands with various spacing sizes is required according to the length of a wire dividing pipe in the processing process, errors are easy to make in the construction process, the steel strands are easy to be confused, and the like.
The invention adopts the following technical scheme to realize the purpose:
an adjustable anti-skid base plate is used for being matched and mounted with the end part of a cable saddle of a wire separating pipe and comprises a bottom plate and at least one adjusting base plate; the adjusting base plate is provided with a pore channel matched with at least one layer of the wire separating pipe, two sides of the adjusting base plate are connected with the outer end face of the bottom plate through an adjusting mechanism, and the inner end face of the bottom plate is matched with the end part of the cable saddle.
According to the adjustable anti-slip base plate in the technical scheme, the adjusting base plate is provided with the hole channel matched with the at least one layer of wire separating pipe, the prestressed tendons in the layer of wire separating pipe can be anchored at the outer end of the hole channel of the adjusting base plate through the anti-slip key matched with the prestressed tendons, and the distance between the adjusting base plate and the bottom plate can be changed through the adjusting mechanism, namely the distance between anchoring structures at two ends of the prestressed tendons is changed, so that the processing error of the at least one layer of prestressed tendon anti-slip key can be compensated, the processing precision of the prestressed tendons is reduced, and the processing fault tolerance rate of the prestressed tendons is improved; the prestressed tendons can be anchored on the outer end face of the bottom plate without a filament separating pipe layer matched with the adjusting backing plate;
in addition, the distance between the adjusting base plate and the bottom plate can be changed through the adjusting mechanism according to the length of each layer of the wire separating pipe, so that the distances between the anti-sliding keys at the two ends of at least two layers of prestressed tendons are the same, the prefabricated types of the prestressed tendons (classified according to the distances between the anti-sliding keys at the two ends) can be reduced, and the error probability in construction is reduced.
The further technical scheme is that the adjusting mechanism comprises a fixing screw, a first nut and a second nut, wherein the first nut and the second nut are in threaded fit with the fixing screw, one end of the fixing screw is fixedly connected with the bottom plate, the other end of the fixing screw penetrates through the first nut, the adjusting base plate and the second nut in sequence, and the first nut and the second nut are used for clamping the adjusting base plate. In the technical scheme, the distance between the adjusting base plate and the bottom plate can be changed by adjusting the positions of the first nut and the second nut on the fixing screw rod, so that the machining position error of the anti-sliding keys on the prestressed ribs can be compensated by changing the anchoring position of the prestressed ribs, in addition, the distance can be adjusted to enable the distance between the anti-sliding keys at two ends of at least two layers of prestressed ribs to be the same, the device can be suitable for working conditions of different wire dividing pipe sizes, and the applicability is strong.
The adjusting base plate comprises a base plate body and a fixed base plate fixedly connected with the outer end face of the base plate body, a first layer hole and a second layer hole which are matched with the two layers of wire separating pipes are formed in the adjusting base plate, the first layer hole is located on the base plate body, and the second layer hole is located on the fixed base plate. In the technical scheme, the height of the fixed base plate can be processed according to the length difference of the two layers of wire separating pipes, so that the distance between the anti-sliding keys at the two ends of the two layers of prestressed tendons anchored on the fixed base plate and the base plate body is equal, the size types of the prestressed tendons are reduced, and the error probability in construction is reduced.
The further technical scheme is that the number of the adjusting base plates is the same as the number of layers of the yarn separating pipes, and each adjusting base plate is provided with a pore channel matched with one layer of the yarn separating pipes. In the technical scheme, the adjusting base plate can be adjusted into a stepped structure through the adjusting mechanism, the height difference of adjacent steps can compensate the length difference of adjacent wire separating pipe layers, so that the distances between the anti-sliding keys at two ends of each layer of prestressed ribs are equal, the factory prefabrication can be realized, and the prestressed ribs are the same in size and specification and are not easy to disorder and make mistakes during field construction.
The utility model provides a suspension cable saddle, includes at least one foretell adjustable skid resistant backing plate, still includes the prestressing tendons, the prestressing tendons is equipped with the anchor structure respectively at the both ends of cable saddle, is located the anchor structure anchor of adjustable skid resistant backing plate end in the outer end of adjustable skid resistant backing plate.
In the technical scheme, prestressed rib anchoring structures are arranged at two ends of a cable saddle, the cable force F1 of the prestressed ribs in the cable saddle is larger than the cable forces F2 and F3 at two ends outside the cable saddle through a tensioning device, when the cable force F1 reaches a target force, the anchoring structures at two ends of the cable saddle are anchored by the prestressed ribs, the state that F1 is larger than F2/F3 is kept, when the cable force F2/F3 is changed, the F1 is always kept unchanged, the prestressed ribs in the cable saddle cannot slide relatively all the time, and the purposes of higher anti-sliding force (larger than designed cable force) and zero abrasion are achieved.
The further technical scheme is that the anchoring structure comprises an anti-sliding key fixedly connected to the prestressed tendon and a threaded sleeve in threaded connection with an outer ring of the anti-sliding key, and the threaded sleeve is connected to the outer end of the adjustable anti-sliding base plate in a clamped mode.
In the technical scheme, the anti-slip key is prefabricated and consolidated on the prestressed tendon, the anti-slip key is a hollow cylindrical body, the anti-slip key is formed by cold extrusion of a metal component through mechanical equipment, the anchoring force of the anti-slip key and the prestressed tendon is not less than 50% of the breaking force of the prestressed tendon, an external thread is designed on the surface of the consolidated anti-slip key, the prestressed tendon can stretch after being tensioned, after the target cable force is reached, the threaded sleeve is clamped at the outer end of the adjustable anti-slip base plate through the adjusting thread to be adjusted and locked, and the cable force of the prestressed tendon in the cable saddle is kept unchanged. The anchor structure can realize cable force adjustment in the construction process or the application process in the technical scheme, wherein, the adjustable antiskid base plate is matched for use, the processing error of the prestressed rib on the same layer can be compensated, in addition, the anchor structures at the two ends of the cable saddle can be the anchor structure with the cable force adjustment at one end, the other end is the anchor structure in the following technical scheme or the conventional anchor structures such as a clamping piece, a taper hole and the like, and the anchor structures with the cable force adjustment at the two ends can be arranged.
The further technical scheme is that the outer diameter of the anti-sliding key is smaller than the inner diameter of the hole passage of the adjusting cushion plate. The outer diameter of the anti-sliding key is smaller than the inner diameter of the hole channel of the adjusting base plate, so that the pre-stressed steel bar can be prefabricated in a factory, construction such as tensioning and the like can be conveniently penetrated and arranged on the site, and the adjusting range of the cable force is large.
The anchoring structure comprises an anti-skid key and a backing ring which are fixedly connected on the prestressed tendon; the backing ring is provided with a through hole for penetrating through the prestressed tendons, the first end face of the backing ring is clamped at the outer end of the adjustable anti-sliding backing plate, and the end face of the anti-sliding key is clamped at the second end face of the gasket.
In the technical scheme, the anti-skid keys can be fixedly connected to the prestressed tendons by adopting the method in the technical scheme, after the prestressed tendons are tensioned and extend to reach the target cable force, gaps between the anti-skid keys and the outer ends of the adjustable anti-skid base plates, which are generated by the prestressed tendons extending under the stress, are filled with backing rings.
The invention has the beneficial effects that:
1. the adjustable antiskid backing plate disclosed by the embodiment can change the distance between the adjusting backing plate and the bottom plate through the adjusting mechanism, namely, the distance between the anchoring structures at two ends of the prestressed tendon is changed, so that the machining error of at least one layer of prestressed tendon antiskid keys can be compensated, the machining precision of the prestressed tendon can be reduced, and the machining fault tolerance of the prestressed tendon is improved.
2. The adjustable antiskid backing plate disclosed by the embodiment can change the distance between the adjusting backing plate and the bottom plate through the adjusting mechanism according to the length of each layer of the wire separating pipe, so that the distance between the antiskid keys at two ends of at least two layers of prestressed tendons is the same, the prefabricated types of the prestressed tendons can be reduced, and the error probability in construction is reduced.
Drawings
FIG. 1 is a diagram: the invention discloses a structural schematic diagram of an adjustable skid-resistant base plate.
FIG. 2 is a diagram: the invention relates to a side view of an adjustable skid resistant base plate.
FIG. 3 is a diagram of: the invention relates to a cross section of a cable saddle wire-dividing tube.
FIG. 4 is a diagram of: the invention relates to a schematic diagram of an anchoring structure with thread adjustment.
FIG. 5 is a diagram: the invention relates to a schematic diagram of an anchoring structure with a backing ring.
In the figure:
1. a base plate; 11. the outer end face of the bottom plate; 12. the inner end face of the bottom plate; 21. a first adjusting shim plate; 22. a second adjusting shim plate; 23. a third adjusting shim plate; 30. a fixing plate; 31. a first fixed bolster; 32. a second fixed bolster; 33. a third fixed base plate; 41. adjusting the screw rod; 42. a first nut; 43. a second nut; 5. a wire separating pipe; 51. a first layer of a wire separating tube; 52. a second layered split tube; 53. a third layer of wire separating pipe; 54. a fourth layer of the branched pipe; 55. a fifth layer of wire separating pipes; 56. a sixth layer of the branched pipe; 57. a seventh layer of the branched pipe; 6. prestressed tendons; 61. a first anti-skid key; 62. a threaded sleeve; 71. a second anti-slip bond; 72. a backing ring.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 5, and the following embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1 to 3, the present embodiment provides an adjustable skid-resistant pad plate for being installed in cooperation with an end of a cable saddle of a wire-separating tube, wherein a first layer of wire-separating tube 51, a second layer of wire-separating tube 52, a third layer of wire-separating tube 53, a fourth layer of wire-separating tube 54, a fifth layer of wire-separating tube 55, a sixth layer of wire-separating tube 56 and a seventh layer of wire-separating tube 57 are sequentially arranged in the cable saddle from top to bottom, and because the wire-separating tubes have a certain radian, the lengths of the wire-separating tube layers are gradually decreased from top to bottom;
the cable saddle comprises a conventional flat plate type anti-sliding base plate matched with a first end of a cable saddle, an adjustable anti-sliding base plate matched with a second end of the cable saddle comprises a bottom plate 1, three adjusting base plates connected with an outer end face 11 of the bottom plate through adjusting mechanisms respectively, and a fixing plate 30 fixedly connected with the outer end face 11 of the bottom plate, wherein the inner end face of the bottom plate is matched with the second end of the cable saddle, the specific adjusting mechanism comprises a fixing screw rod 41, a first nut 42 and a second nut 43, one end of the fixing screw rod 41 is fixedly connected with the bottom plate 1, the other end of the fixing screw rod penetrates through the first nut 42, the adjusting base plates and the second nut 43 in sequence, the adjusting base plates are clamped by the first nut 42 and the second nut 43 under the action of a thread structure, and the adjusting mechanisms are arranged on two sides of the three adjusting base plates in the embodiment; the three adjusting backing plates are respectively a first adjusting backing plate 21, a second adjusting backing plate 22 and a third adjusting backing plate 23, wherein the first adjusting backing plate 21 comprises a first backing plate body and a first fixing backing plate 31 fixedly arranged on the outer end face of the first backing plate body, the second adjusting backing plate 22 comprises a second backing plate body and a second fixing backing plate 32 fixedly arranged on the outer end face of the second backing plate body, and the third adjusting backing plate 23 comprises a third backing plate body and a third fixing backing plate 33 fixedly arranged on the outer end face of the third backing plate body; the fixing plate 30 is provided with a pore passage matched with the first layer of wire separating pipe 51, the first cushion plate body is provided with a pore passage matched with the second layer of wire separating pipe 52, the first fixing cushion plate 31 is provided with a pore passage matched with the third layer of wire separating pipe 53, the second cushion plate body is provided with a pore passage matched with the fourth layer of wire separating pipe 54, the second fixing cushion plate 32 is provided with a pore passage matched with the fifth layer of wire separating pipe 55, the third cushion plate body is provided with a pore passage matched with the sixth layer of wire separating pipe 56, and the third fixing cushion plate 33 is provided with a pore passage matched with the seventh layer of wire separating pipe 56; the height difference between the first adjusting cushion plate 21 and the fixing plate 30 is adjusted through the length difference between the first wire separating tube layer 51 and the second wire separating tube layer 52, the height difference between the first adjusting cushion plate 21 and the second adjusting cushion plate 22 is adjusted through the length difference between the second wire separating tube layer 52 and the fourth wire separating tube layer 54, the height difference between the second adjusting cushion plate 22 and the third adjusting cushion plate 23 is adjusted through the length difference between the fourth wire separating tube layer 54 and the sixth wire separating tube layer 56, the height of the first fixing cushion plate 31 is designed according to the length difference between the second wire separating tube layer 52 and the third wire separating tube layer 53, the height of the second fixing cushion plate 32 is designed according to the length difference between the fourth wire separating tube layer 54 and the fifth wire separating tube layer 55, the height of the third fixing cushion plate 33 is designed according to the length difference between the sixth wire separating tube layer 56 and the seventh wire separating tube layer 57, therefore, the distance between anchoring structures of each layer of prestressed tendons 6 at two ends of the cable saddle is the same, only one type of prestressed tendons 6 with anti-skid keys is used, and errors are prevented in the construction process.
The specific installation process of the prestressed tendon 6 is as follows: adjusting the adjustable anti-sliding base plate according to the size requirement, wherein the prestressed tendon 6 penetrates through the flat plate type base plate at the first end of the cable saddle, the wire dividing pipe inside the cable saddle and the adjustable anti-sliding base plate at the second end of the cable saddle, wherein the base plates at the two ends are provided with anchoring structures, the cable force F1 of the prestressed tendon 6 in the cable saddle is larger than the cable forces F2 and F3 at the two ends outside the cable saddle through a tensioning device, when the cable force F1 reaches a target force, the anchoring structures at the two ends of the prestressed tendon 6 are used for anchoring, the state that F1 is larger than F2/F3 is kept, when the cable force F2/F3 is changed, the F1 is kept unchanged all the time, the prestressed tendon 6 in the cable saddle can not slide relatively all the time, and the purposes of higher anti-sliding force (larger than the designed cable force) and zero abrasion are achieved.
The above embodiment exemplarily shows a specific structure of the adjustable skid resistant plate, and according to other embodiments or practical applications, the adjustable skid resistant plate may be further but not limited to the following structure:
1. the bottom plate 1 is provided with the adjusting base plates with the same number as the wire separating pipes, so that the height difference between each adjusting base plate and the bottom plate 1 can be adjusted according to the length difference of each layer of wire separating pipes in actual working conditions, the distances between the anti-sliding keys at two ends of each layer of prestressed tendons 6 are equal, factory prefabrication is realized, and the prestressed tendons have the same size and specification and are not easy to be confused and go wrong during field construction;
2. the adjusting base plate which is less than the wire dividing pipe by one layer is arranged on the bottom plate 1, namely the adjusting base plate which is matched with other wire dividing pipe layers except the first wire dividing pipe 51 (the wire dividing pipe layer with the longest length) is arranged on the bottom plate 1, so that the anchoring structure intervals at two ends of the prestressed tendon 6 can be determined according to the first wire dividing pipe 51, the height difference between each adjusting base plate and the bottom plate 1 is adjusted, the length difference between each wire dividing pipe and the first wire dividing pipe 51 is compensated, and the effect is also achieved.
3. At least one adjusting base plate is arranged on the bottom plate 1, one adjusting base plate is taken as an example, the adjusting base plate can be matched with any wire separating pipe layer, the prefabricated error of the anchoring structure interval at two ends of the prestressed rib 6 corresponding to the wire separating pipe layer can be compensated, the flat plate type base plate structure in the prior art is avoided, the problem that the error can only be made again in a factory is avoided, more prefabricated errors can be compensated by reasonably deducing the structure of more than one adjusting base plate, and the processing fault tolerance rate of the prestressed rib 6 can be improved.
4. The adjusting base plate can be further provided with a plurality of layers of pore passages matched with the wire separating pipes, the structure can at least compensate the processing error of the anti-sliding key of at least one layer of prestressed tendons, meanwhile, the distance between the anchoring structures at two ends of at least two layers of prestressed tendons 6 can be the same, the prefabricated types of the prestressed tendons 6 can be reduced, and the error probability in construction is reduced.
What is illustrated is that when the prestressed tendons 6 are anchored at the outer ends of the pore channels of the adjusting shim plate, the prestressed tendons need to penetrate through the bottom plate 1, and the bottom plate 1 may be provided with through holes for each prestressed tendon 6, or with through grooves for the prestressed tendons 6 of the layer, which penetrate through the inner and outer end faces of the prestressed tendons.
In addition, the adjusting mechanism can also be of a screw rod structure, a screw hole in threaded fit with the screw rod is formed in the adjusting base plate, one end of the screw rod penetrates through the screw hole and is in rotating connection with the bottom plate 1 (the screw rod is in rotating connection through a bearing) or is abutted to the outer end face 11 of the bottom plate (a groove in outer diameter fit with the screw rod is formed in the outer end face 11 of the bottom plate and is used for limiting), and the change of the height difference between the adjusting base plate and the bottom plate 1 can be realized by rotating the screw rod.
In another embodiment, a cable saddle for a stay cable is provided, which comprises two adjustable anti-skid base plates of the above embodiments, and prestressed tendons are anchored at two ends of the cable saddle respectively; as shown in fig. 4 to 5, the specific anchoring structure is: the first end anchoring structure comprises a first anti-sliding key 61 fixedly connected to the prestressed tendon 6 and a threaded sleeve 62 in threaded connection with the outer ring of the first anti-sliding key 61, and the threaded sleeve 62 is clamped at the outer end of the adjustable anti-sliding base plate; the second end anchoring structure comprises a second anti-sliding key 71 and a backing ring 72 on the prestressed tendon, the backing ring 72 is provided with a through hole for penetrating through the prestressed tendon 6, the backing ring is in a Harvard structure, a first end face of the backing ring is clamped at the outer end of the adjustable anti-sliding backing plate, and an end face of the second anti-sliding key 71 is clamped at a second end face of the gasket 72; specifically, a first anti-slip key 61 and a second anti-slip key 71 are prefabricated and fixedly connected to anchoring structure positions at two ends of each prestressed tendon 6, the anti-slip keys are hollow cylindrical bodies and are formed by cold extrusion of metal components through mechanical equipment, the anchoring force of the anti-slip keys and the prestressed tendons 6 is not less than 50% of the breaking force of the prestressed tendons, external threads are designed on the surface of each first anti-slip key 61, the prestressed tendons 6 stretch after being tensioned, after the target cable force is reached, the threaded sleeves 62 are clamped to the outer ends of adjustable anti-slip base plates through adjusting threads to be adjusted and locked, gaps between the second anti-slip keys 71 and the outer ends of the adjustable anti-slip base plates, which are generated by the stretching of the prestressed tendons 6, are filled with backing rings 72, so that the cable force of the prestressed tendons 6 in a cable saddle can be kept unchanged, the cable force adjustment of each prestressed tendon 6 in the construction process or the application process can be realized, and the compensation of the machining error of each prestressed tendon 6 in the same layer can be realized by matching with the adjustable anti-slip base plates.
In another embodiment, on the basis of the above embodiment, the outer diameter of the first anti-sliding key 61 is smaller than the inner diameter of the hole of the adjusting shim plate, so that on one hand, the prestressed tendon 6 can be prefabricated in a factory and is convenient for construction such as tensioning and the like in a field, and on the other hand, the distance of movement of the first anti-sliding key 61 under the action of the threaded structure is larger, that is, the adjusting range of the cable force is larger.
In addition, the anchoring structure at both ends of the saddle in the above embodiment may be the above anchoring structure with the adjusting cable force at one end, the conventional anchoring structure at the other end, or both ends may be one of the above anchoring structures of the above embodiments.
According to the adjustable anti-sliding base plate and the stay cable saddle, the distance between the adjusting base plate and the bottom plate 1 can be changed through the adjusting mechanism, namely the distance between the anchoring structures at two ends of the prestressed tendon 6 is changed, so that the machining error of the anti-sliding key of at least one layer of prestressed tendon 6 can be compensated, the machining precision of the prestressed tendon 6 can be reduced, and the machining fault-tolerant rate of the prestressed tendon 6 is improved; the distance between the adjusting base plate and the bottom plate 1 can be changed through the adjusting mechanism according to the length of each layer of the wire separating pipe, so that the distance between the anti-sliding keys at two ends of at least two layers of the prestressed tendons 6 is the same, the prefabricated types of the prestressed tendons 6 can be reduced, and the error probability in construction is reduced.
Claims (8)
1. An adjustable anti-skid base plate is characterized by being used for being matched with a wire separating pipe cable saddle and comprising a base plate and at least one adjusting base plate; the adjusting base plate is provided with a pore channel matched with at least one layer of the wire separating pipe, two sides of the adjusting base plate are connected with the outer end face of the bottom plate through an adjusting mechanism, and the inner end face of the bottom plate is matched with the end part of the cable saddle.
2. The adjustable skid resistant backing plate of claim 1, wherein the adjusting mechanism comprises a fixing screw, a first nut and a second nut which are in threaded fit with the fixing screw, one end of the fixing screw is fixedly connected with the bottom plate, the other end of the fixing screw penetrates through the first nut, the adjusting backing plate and the second nut in sequence, and the first nut and the second nut are used for clamping the adjusting backing plate.
3. The adjustable skid-resistant backing plate according to claim 1, wherein the adjusting backing plate comprises a backing plate body and a fixed backing plate fixedly connected with the outer end face of the backing plate body, a first layer of pore channel and a second layer of pore channel matched with the two layers of wire separating pipes are arranged on the adjusting backing plate, the first layer of pore channel is positioned on the backing plate body, and the second layer of pore channel is positioned on the fixed backing plate.
4. The adjustable skid-resistant backing plate according to claim 1, wherein the number of the adjusting backing plates is the same as the number of layers of the wire dividing pipes, and each adjusting backing plate is provided with a pore passage matched with one layer of the wire dividing pipes.
5. A stay cable saddle, characterized by that includes at least one adjustable antiskid backing plate of claim 1, still includes prestressing tendons, prestressing tendons are equipped with anchor structure respectively at the both ends of saddle, and the anchor structure that is located adjustable antiskid backing plate end anchors in the outer end of adjustable antiskid backing plate.
6. The cable saddle of claim 5, wherein the anchoring structure comprises an anti-sliding key fixed on the tendon, and a threaded sleeve in threaded connection with an outer ring of the anti-sliding key, and the threaded sleeve is clamped at the outer end of the adjustable anti-sliding pad.
7. The cable saddle for a suspension cable according to claim 6, wherein said anti-sliding key has an outer diameter smaller than an inner diameter of said hole of said adjustment pad.
8. A cable saddle for a suspension cable according to claim 5, wherein said anchoring structure comprises an anti-skid key and a grommet fixed to said tendon; the backing ring is provided with a through hole for penetrating through the prestressed tendons, the first end face of the backing ring is clamped at the outer end of the adjustable anti-sliding backing plate, and the end face of the anti-sliding key is clamped at the second end face of the gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111176664.XA CN113863137B (en) | 2021-10-09 | 2021-10-09 | Adjustable skid-resistant base plate and stay cable saddle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111176664.XA CN113863137B (en) | 2021-10-09 | 2021-10-09 | Adjustable skid-resistant base plate and stay cable saddle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113863137A CN113863137A (en) | 2021-12-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2621191Y (en) * | 2003-05-12 | 2004-06-23 | 柳州欧维姆机械有限责任公司 | Low tower stayed-cable bridge chain saddle with anti-skid anchor |
| JP4728262B2 (en) * | 2007-01-15 | 2011-07-20 | 三井住友建設株式会社 | Saddle structure |
| CN205421032U (en) * | 2016-03-25 | 2016-08-03 | 中铁四局集团第四工程有限公司 | Orthotic devices of prestressed anchorage utensil clamping piece |
| FR3069555A1 (en) * | 2017-07-28 | 2019-02-01 | Soletanche Freyssinet | IMPROVED ASSEMBLY COMPRISING A STRUCTURE CABLE AND A DEVIATION DEVICE |
| CN109778698A (en) * | 2019-01-30 | 2019-05-21 | 柳州市桥厦缆索制品有限公司 | A kind of cable-stayed bridge saddle with antiskid key apparatus |
| CN113389149B (en) * | 2021-07-08 | 2022-05-27 | 北京工业大学 | Anti-loosening integral dismounting device for clamping piece of temporary prestressed steel strand stay cable |
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