CN215714631U - Stay cable structure of cable-stayed bridge - Google Patents
Stay cable structure of cable-stayed bridge Download PDFInfo
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- CN215714631U CN215714631U CN202120526999.9U CN202120526999U CN215714631U CN 215714631 U CN215714631 U CN 215714631U CN 202120526999 U CN202120526999 U CN 202120526999U CN 215714631 U CN215714631 U CN 215714631U
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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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- 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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Abstract
The utility model discloses a stay cable structure of a cable-stayed bridge, which comprises a stay cable body and an anchoring device, wherein two ends of the stay cable body are provided with PE sheath stripping sections which expose cable steel wires; the PE sheath section of the stay cable body is provided with an air supply ring, the air supply ring is arranged along the circumferential direction of the stay cable body, and a plurality of air supply pipes are arranged between the air supply ring and the anchoring device, so that dry air can enter the stay cable body from the air supply pipes. According to the utility model, dry air is conveyed into the stay cable body through the plurality of air supply pipes, so that the corrosion humidity of the stay cable body is greatly reduced, and the risk of blockage of the air supply pipes is reduced through the plurality of air supply pipes, so that the stay cable structure has the advantages of better dehumidification effect, long service life and low maintenance cost.
Description
Technical Field
The utility model relates to the technical field of bridge engineering, in particular to a stay cable structure of a cable-stayed bridge.
Background
A cable-stayed bridge, also called a diagonal tension bridge, is a bridge with a main beam directly pulled on a bridge tower by a plurality of guys, and is a structural system formed by combining a pressure-bearing tower, a pulled guy and a bending-bearing beam body. It can be regarded as the multi-span elastic support continuous beam of the guy cable replacing the buttress; it can also reduce the bending moment in the beam body, reduce the building height, lighten the structural weight and save materials. From this, it is known how the mass of the stay cable directly affects the mass of the cable-stayed bridge, which is one of the most important components in the cable-stayed bridge.
The existing stay cable is easy to corrode the upper anchor head and the lower anchor head of the stay cable due to weather, surrounding environment and other reasons in the using process, particularly in some areas with high humidity, the upper anchor head and the lower anchor head of the stay cable are easy to corrode, and the stay cable body is also easy to corrode, so that the stay cable bridge is short in service life, potential safety hazards exist, the later-stage bridge stay cable is high in maintenance cost and long in maintenance time.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a stay cable structure of a cable-stayed bridge, which can greatly reduce the corrosion humidity of a cable body, and reduce the risk of blockage of an air supply pipe by arranging a plurality of air supply pipes, so that the stay cable structure has better dehumidification effect, long service life and low maintenance cost.
The purpose of the utility model is realized by adopting the following technical scheme:
a stay cable structure of a cable-stayed bridge comprises a stay cable body and an anchoring device, wherein PE sheath stripping sections exposing cable steel wires are arranged at two ends of the stay cable body, the stay cable body is fixed on the anchoring device by virtue of the cable steel wires of the PE sheath stripping sections, and a sleeve is arranged between the anchoring device and the PE sheath and used for protecting the exposed cable steel wires; the stay cable is characterized in that an air supply ring is arranged on the section of the PE sheath of the stay cable body, the air supply ring is arranged along the circumferential direction of the stay cable body, and a plurality of air supply pipes are arranged between the air supply ring and the anchoring device, so that dry air can enter the air supply ring from the air supply pipes and then enters the stay cable body from gaps of the stay cable steel wires.
Further, an annular groove is formed in the inner side wall of the air feeding ring, the annular groove is arranged along the circumferential direction of the air feeding ring, and the air feeding pipe conveys dry air into the annular groove, so that the air feeding ring is provided with an annular air feeding space.
Further, a heat-shrinkable sleeve or a PVF belt is arranged on the stay cable body and used for limiting the air supply pipe and the air supply ring so as to protect the air supply space.
Further, a sealant is arranged between the PE sheath stripping section and the heat-shrinkable sleeve or the PVF belt.
Furthermore, two waist-shaped holes are formed in the outer wall of one end, close to the air feeding ring, of the air feeding pipe, the two waist-shaped holes are arranged oppositely, and the waist-shaped holes are located in the annular groove.
Furthermore, the air feeding ring is provided with a plurality of limiting grooves for limiting the air feeding pipe.
Furthermore, the anchoring device comprises an anchor head, the anchor head is connected with the sleeve, a conical anchor hole is formed in one end of the anchor head, a wire separating disc is arranged in the anchor hole and used for separating and fixing the exposed stay cable steel wire of the PE sheath stripping section, and one end, far away from the gas feeding ring, of the gas feeding pipe is limited by means of the wire separating disc.
Furthermore, a plurality of air supply pipe limiting holes are formed in the wire separating disc so as to limit one end, far away from the air supply ring, of the air supply pipe.
Furthermore, the anchor device still includes anchor head safety cover, the anchor head safety cover sets firmly on the anchor head, the one end that the air feed pipe kept away from the air feed ring extends to in the anchor head safety cover for when external dry air lets in an anchor head safety cover, it can enter into the cable body from the air feed pipe, then discharges from another anchor head safety cover.
Furthermore, the anchoring device also comprises an anchor backing plate, the anchor backing plate is sleeved on the outer wall of the anchor head to divide the anchor head into a first end and a second end, the anchor head protective cover is fastened on the anchor backing plate, and the first end of the anchor head is accommodated in the anchor head protective cover; the cable guide pipe is sleeved outside the stay cable body, one end of the cable guide pipe is fixed on the anchor backing plate, and the second end of the anchor head is accommodated in the cable guide pipe.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the plurality of air supply pipes are arranged between the air supply ring arranged on the cross section of the PE sheath of the stay cable body and the anchoring device, dry air enters the stay cable body from the air supply pipes, so that the corrosion humidity of the stay cable body is greatly reduced, and the risk of blockage of the air supply pipes is reduced by arranging the plurality of air supply pipes, so that the stay cable structure has the advantages of better dehumidification effect, long service life and low maintenance cost.
Drawings
FIG. 1 is a schematic view of a stay cable according to the present invention in an air flow;
FIG. 2 is a schematic structural view of the anchoring device connected to the cable body according to the embodiment of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;
FIG. 5 is a cross-sectional view taken at C-C of FIG. 4;
FIG. 6 is a schematic structural view of a filament separating plate according to an embodiment of the present invention;
FIG. 7 is a schematic view of the gas delivery ring in an embodiment of the present invention;
FIG. 8 is a schematic view showing the structure of an air supply pipe according to an embodiment of the present invention.
In the figure: 1. a cable body; 10. a PE sheath stripping section; 100. a stay wire; 11. a PE sheath; 2. a sleeve; 3. an anchoring device; 30. an anchor head; 300. a wire separating disc; 3000. a gas supply pipe limiting hole; 31. an anchor backing plate; 32. an anchor head protective cover; 320. an air inlet; 4. a cable guide tube; 40. a waterproof cover; 5. an air supply pipe; 50. a waist-shaped hole; 6. a gas delivery ring; 60. a limiting groove; 61. an annular groove; 7. heat-shrinkable tubing; 8. sealing glue; 9. a sensor; 90. steam constant pressure valve.
Detailed Description
The present invention will be described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the following description, various embodiments or technical features may be arbitrarily combined to form a new embodiment without conflict.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The implementation mode is as follows:
as shown in fig. 1-8, the present invention shows a stay cable structure of a cable-stayed bridge. As shown in fig. 1, one end of the stay cable structure is used for connecting with a bridge (beam end), and the other end of the stay cable structure is used for connecting with a tower (tower end). The stay cable structure comprises a stay cable body 1 and anchoring devices 3, wherein the anchoring devices 3 are fixedly arranged at two ends of the stay cable body 1. In the practical process of bridge engineering, the two ends of the stay cable body 1 can be respectively fixed on the bridge and the tower frame by means of the anchoring device 3.
The stay cable body 1 consists of a stay cable steel wire 100 and a PE sheath 11 sleeved outside the stay cable steel wire 100, and the stay cable steel wire 100 consists of a plurality of strands of steel strands and is an important stress part of the bridge. The two ends of the stay cable body 1 are provided with PE sheath stripping sections 10 exposing the stay cable steel wire 100, the stay cable body 1 is fixed on the anchoring device 3 by means of the PE sheath stripping sections 10 exposing the stay cable steel wire 100, and a sleeve 2 is arranged between the anchoring device 3 and the PE sheath 11 of the stay cable body 1 and used for protecting the PE sheath stripping sections 10 exposing the stay cable steel wire 100. The stay cable is characterized in that an air supply ring 6 is arranged on the section of a PE sheath of the stay cable body 1, the air supply ring 6 is arranged along the circumferential direction of the stay cable body 1, and a plurality of air supply pipes 5 are arranged between the air supply ring 6 and the anchoring device 3, so that dry air can enter the air supply ring 6 from the air supply pipes 5 and then enter the stay cable body 1 from gaps of stay cable steel wires. Namely, dry air enters the air feeding ring 6 from the air feeding pipes 5 through the plurality of air feeding pipes 5, and the dry air in the air feeding ring 6 enters the inhaul cable body 1 from the gap of the exposed inhaul cable steel wire, so that the inhaul cable body 1 is protected from corrosion; and through setting up the air feed pipe 5 and supplying air, reduce the risk that the air feed pipe 5 blocks up, make the stay cable structure dehumidification effect of the utility model better, have long performance life, the maintenance cost is low.
Specifically, as shown in fig. 2, the anchoring device 3 includes an anchor head 30, an anchor backing plate 31 and an anchor head protecting cover 32, the anchor head 30 is disposed at two ends of the cable body 1, that is, two ends of the cable body 1 are respectively connected with one anchor head 30, the anchor head 30 at the beam end of the cable body 1 is a lower anchor head, and the anchor head 30 at the tower end of the cable body 1 is an upper anchor head. The anchor head 30 is connected with the sleeve 2, namely, one end of the sleeve 2 is connected with the anchor head 30, and the other end of the sleeve 2 is connected with the PE sheath 11 of the inhaul cable body 1. The anchor head 30 is internally provided with a conical anchor hole at one end, the conical anchor hole is mainly used for dispersing the stay cable steel wires 100, a wire separating disc 300 is arranged in the anchor hole and used for separating and fixing the exposed stay cable steel wires 100 of the PE sheath stripping section 10, and one end of the air feed pipe 5, which is far away from the air feed ring 6, is limited by means of the wire separating disc 300. The anchor backing plate 31 cover is established the outer wall of anchor head 30 will first end and second end are separated into to anchor head 30, anchor head safety cover 32 sets firmly on anchor head 30, and anchor head safety cover 32 is in with the help of the bolt-up on the anchor backing plate 31, just the first end of anchor head 30 is acceptd extremely in the anchor head safety cover 32, utilize this anchor head safety cover 32 to carry out anticorrosive protection to the first end of anchor head 30 promptly. The outside of the stayed cable body 1 is sleeved with a cable guide pipe 4, one end of the cable guide pipe 4 is fixed on the anchor backing plate 31, and the second end of the anchor head 30 is accommodated in the cable guide pipe 4, i.e. the cable guide pipe 4 is used for performing anticorrosion protection on the second end of the anchor head 30. And a waterproof cover 40 is also arranged between the cable guide pipe 4 and the cable body 1, so that the anchor head 30 is further protected from corrosion. One end of the air feed pipe 5, which is far away from the air feed ring 6, extends into the anchor head protective cover 32, so that when external dry air (dry gas) is introduced into one of the anchor head protective covers 32, the dry air (dry gas) can enter the air feed ring 6 from the air feed pipe 5, then enter the cable body 1 from the air feed ring 6, and then is discharged from the other anchor head protective cover 32.
It can be understood that, as shown in fig. 2 to 8, one end of the air supply pipe 5 is fixed to the air supply ring 6, and the wire separating plate 300 is provided with a plurality of air supply pipe limiting holes 3000 for limiting the end of the air supply pipe 5 away from the air supply ring 6. In the present embodiment, four air supply pipes 5 are provided, and the number of the air supply pipe limiting holes 3000 in the wire separating disc 300 is changed according to the number of the provided air supply pipes 5, as shown in fig. 6, that is, four air supply pipe limiting holes 3000 are also provided in the wire separating disc 300, and it is a matter of course that those skilled in the art should set the number of the replaced air supply pipe limiting holes according to the actual installation number of the air supply pipes. And the other end of the air feed pipe 5 passes through the air feed pipe limiting hole 3000 on the wire separating disc 300 and extends into the anchor head protecting cover 32. The outside dry air (dry gas) is introduced into the anchor head protecting cover 32 at the beam end, and naturally, the anchor head protecting cover 32 at the beam end has an air inlet 320, and the dry air (dry gas) treated by a dehumidifying device (not shown) is introduced into the anchor head protecting cover 32 at the beam end of the cable body 1 from the air inlet 320. Therefore, dry air sequentially enters the air supply pipe 5 at the beam end from the anchor head protection cover 32 at the beam end, enters the air supply ring 6 from the air supply pipe 5 at the beam end, enters the cable body 1 from the air supply ring 6, enters the air supply pipe 5 at the tower end from the cable body 1, enters the anchor head protection cover 32 at the tower end from the air supply pipe 5 at the tower end, and is finally discharged from the air outlet end of the anchor head protection cover 32 at the tower end, so that the dry air (dry gas) can carry out anti-corrosion protection on the anchoring device 3, the cable body 1, the cable guide pipe 4, the sleeve 2 and the like, the problem that the stay cable body 1 and the upper and lower anchors are easy to rust can be comprehensively solved, the stay cable has a simple structure, can meet the requirements of continuous operation production, and is good in dehumidification effect, convenient to ventilate and long in service life.
Of course, the anchor head safety cover 32 of tower end is given vent to anger and is served and be equipped with at least one sensor 9 or/and steam constant pressure valve 90, sensor 9 adopts temperature and humidity sensor 9, give vent to anger end to the blast pipe 5 of tower end through temperature and humidity sensor 9 or/and steam constant pressure valve 90 and carry out real-time supervision, can monitor in real time and discover to draw the cable structure to circulate the problem to one side, can be in time to appear the damage, the shutoff, phenomenon such as corruption carries out timely discovery and maintenance, thereby make maintenance efficiency high, reduce cost of maintenance low.
As shown in fig. 3 to 8, the stay cable body 1 is provided with a heat shrink sleeve 7 for defining the air supply pipe 5 and the air supply ring 6. Specifically, the gas feeding ring 6 is formed by two semicircular ring structures, as shown in fig. 7, the gas feeding ring 6 is provided with a plurality of limiting grooves 60 for limiting the gas feeding pipe 5. Namely, one end face of each semicircular structure is provided with a plurality of limiting grooves 60, the other end face is not processed, the end face provided with the limiting grooves 60 is close to the direction of the air supply pipe 5, and the other end face without the limiting grooves 60 is attached to the section of the PE sheath 11 of the inhaul cable body 1. When the air feeding ring 6 is installed, the two semicircular structures limit the air feeding pipe 5 by means of the limiting groove 60, the end face without the limiting groove 60 is attached to the section of the PE sheath 11 of the inhaul cable body 1, and then the position of the air feeding pipe is limited and fixed by means of the heat-shrinkable sleeve 7. Of course, the heat shrinkable tubing 7 is subjected to a heat-melting shrinking process after it is wrapped. Further, at the position of the air feed ring 6, the length of the heat shrinkable sleeve 7 also extends to the air feed pipe 5 near the air feed ring 6, thereby also fixing the position of the air feed pipe 5. In summary, it can be understood that the heat-shrinkable sleeve 7 is used for fixedly connecting the section of the PE sheath 11 and the air supply ring 6 into a whole, and a protection ring is formed outside the exposed steel wire bundle of the cable of the PE sheath stripping section 10, so as to prevent the medium filled in the cable manufacturing process from entering the air supply ring and prevent dry air from leaking from the position of the section of the PE sheath and affecting the air supply effect.
It should be noted that the heat shrinkable sleeve 7 may be replaced with a PVF tape, and of course, other members that can be used to define the air feed pipe 5 and the air feed ring 6 may be used, and those skilled in the art should also be aware that the PVF tape or other members that define the air feed pipe 5 and the air feed ring 6 are not limited herein and fall within the scope of the present invention.
It is noted that the inner side wall of the gas feeding ring 6 has an annular groove 61, the annular groove 61 is arranged along the circumferential direction of the gas feeding ring 6, and the gas feeding pipe 5 feeds dry air into the annular groove 61 so that the gas feeding ring 6 has an annular gas feeding space. That is, it can be understood that one end of the air feed pipe 5 extends into the anchor head protection cover 32 through the air feed pipe limiting hole 3000 on the wire separating disc 300, the other end of the air feed pipe 5 is limited by the limiting groove 60 on the air feed ring 6 and extends into the annular groove 61 of the air feed ring 6, and the air feed ring 6 and the air feed pipe 5 are limited by the heat-shrinkable sleeve 7, that is, the heat-shrinkable sleeve 7 is attached to the surface of the PE sheath stripping section 10, so as to ensure that the annular groove 61 on the air feed ring 6 forms an annular air feed space. As can be understood from the above, the heat shrink tubing 7 serves to define the limiting air feed pipe 5 and the air feed ring 6 and also to protect the air feed space of the air feed ring 6. It should be noted that the air feeding ring 6 is made of nylon 66 material (nylon 66 is thermoplastic plastics, engineering plastics) or spring, of course, other materials can be used, and it is not limited herein, that is, it is obvious to those skilled in the art that other materials can be used to make the component with the annular air feeding space, and it also falls into the protection scope of the present invention.
In addition, in order to further protect the air feeding space of the air feeding ring 6, secondary perfusion materials of an anchoring device (anchorage device) are prevented from entering the air feeding space of the air feeding ring along the axial direction through the gap of the stay cable steel wire. And the PE sheath stripping section 10 is 5-15 cm away from the PE sheath cross section, and a high-temperature-resistant semi-fluid slow-curing sealing material is filled in an inner gap of the stay cable steel wire. It can also be understood that epoxy resin (high temperature resistant semi-fluid slow curing sealing material) is smeared on the stay cable steel wire 100 at a distance of 5-15 cm from the PE sheath at the stripping section 10 of the PE sheath, that is, epoxy resin (curing agent ethylenediamine) is smeared inside the divergent stay cable steel wire, so that the epoxy resin can penetrate into the gap of the stay cable steel wire, and thus the stay cable steel wire 100 close to the 11 section of the PE sheath is provided with a layer of filler layer, so that secondary filling materials of an anchorage device can be prevented from entering the air supply space of the air supply ring 6 along the axial direction through the gap of the stay cable steel wire, and the air supply space of the air supply ring 6 is protected. Further, a sealant 8 is arranged between the PE sheath peeling section 10 and the heat shrinkable sleeve, that is, the sealant 8 is arranged between the packing layer and the heat shrinkable sleeve 7, so as to ensure that all gaps between the heat shrinkable sleeve 7 and the PE sheath peeling section 10 are blocked, and the sealant 8 is a high temperature-resistant sealant, so as to block the gap between the heat shrinkable sleeve 7 and the stay cable steel wire 100, so that the air supply effect of the stay cable body 1 is better.
Of course, the blast pipe 5 is close to two waist shape holes 50 have been seted up on the one end outer wall of air feed ring 6, two waist shape holes 50 set up relatively, waist shape hole 50 is located ring channel 61 for dry air enters into annular air feed space from waist shape hole 50 in, ensures to feed air at 360 degrees annular in annular air feed space, ensures that dry air can feed into cable body 1 in, thereby makes the dry air of feeding into annular air feed space reach one and feed air the balance, and then makes the gas that gets into in cable body 1 even relatively, the inside steel wire of better protection suspension cable body, dehumidification effect is better. In addition, it is worth to be noted that the waist-shaped hole 50 formed in the air supply pipe 5 can prevent the end position of the air supply pipe 5 from sharply damaging the stay cable steel wire, and can smoothly supply air into the cable body; and can increase the air inlet way through annular air feed space for dry air gets into in the cable body 1, and dehumidification effect is better.
The working principle of the utility model is as follows:
the dry air (dry gas) treated by the dehumidification equipment enters the anchor head protective cover 32 at the beam end through the air supply pipe 5, one part of the dry air carries out anticorrosion protection on the lower anchor head, the other part enters the air supply ring 6 at the beam end through the air supply pipe 5 embedded in the wire separating disc 300, then through the gap between the steel wire bundles in the inhaul cable body 1 and the gap between the steel wire bundles and the PE protective sleeve 11 of the inhaul cable body 1, the cable body 1 is protected by corrosion protection, then the dry air reaches the air feeding ring 6 at the anchor head 30 part of the tower end, and then reaches the inside of the anchor head protective cover 32 of the tower end through the air feeding pipe 5 in the air feeding ring 6, the anchor head 30 at the tower end is protected from corrosion and finally discharged through an air outlet end arranged on an anchor head protection cover 32 at the tower end, meanwhile, a steam constant pressure valve and a temperature and humidity monitoring component are arranged at the air outlet end of the anchor head protection cover 32 at the tower end, and the temperature and humidity of the exhausted dry air are monitored to control the dehumidifying system of the stay cable structure.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A stay cable structure of a cable-stayed bridge comprises a stay cable body and an anchoring device, wherein PE sheath stripping sections exposing cable steel wires are arranged at two ends of the stay cable body, the stay cable body is fixed on the anchoring device by virtue of the cable steel wires of the PE sheath stripping sections, and a sleeve is arranged between the anchoring device and the PE sheath and used for protecting the exposed cable steel wires; the method is characterized in that: the stay cable is characterized in that an air supply ring is arranged on the section of the PE sheath of the stay cable body, the air supply ring is arranged along the circumferential direction of the stay cable body, and a plurality of air supply pipes are arranged between the air supply ring and the anchoring device, so that dry air can enter the air supply ring from the air supply pipes and then enters the stay cable body from gaps of the stay cable steel wires.
2. The stay cable structure of cable-stayed bridge according to claim 1, wherein: the inner side wall of the air feeding ring is provided with an annular groove, the annular groove is arranged along the circumferential direction of the air feeding ring, and the air feeding pipe conveys dry air into the annular groove, so that the air feeding ring is provided with an annular air feeding space.
3. The stay cable structure of cable-stayed bridge according to claim 2, wherein: the stay cable body is provided with a heat-shrinkable sleeve or a PVF belt which is used for limiting the air supply pipe and the air supply ring so as to protect the air supply space.
4. The stay cable structure of cable-stayed bridge according to claim 2, wherein: and a sealant is arranged between the PE sheath stripping section and the heat-shrinkable sleeve or the PVF belt.
5. The stay cable structure of cable-stayed bridge according to claim 2, wherein: two waist-shaped holes are formed in the outer wall of one end, close to the air feeding ring, of the air feeding pipe, the two waist-shaped holes are arranged oppositely, and the waist-shaped holes are located in the annular groove.
6. The stay cable structure of cable-stayed bridge according to claim 1, wherein: the air feeding ring is provided with a plurality of limiting grooves for limiting the air feeding pipe.
7. The stay cable structure of cable-stayed bridge according to claim 1, wherein: the anchoring device comprises an anchor head, the anchor head is connected with the sleeve, a conical anchor hole is formed in the anchor head, a wire separating disc is arranged in the anchor hole and used for separating and fixing the exposed inhaul cable steel wire of the PE sheath stripping section, and one end, far away from the air feeding ring, of the air feeding pipe is limited by the wire separating disc.
8. The stay cable structure of cable-stayed bridge according to claim 7, wherein: and a plurality of air supply pipe limiting holes are formed in the wire separating disc so as to limit one end, far away from the air supply ring, of the air supply pipe.
9. The stay cable structure of cable-stayed bridge according to claim 7, wherein: the anchor device is still including anchor head safety cover, the anchor head safety cover sets firmly on the anchor head, the one end that the air feed ring was kept away from to the blast pipe extends to in the anchor head safety cover for when external dry air lets in an anchor head safety cover, it can enter into the cable originally internally from the blast pipe, then discharges from another anchor head safety cover.
10. The stay cable structure of cable-stayed bridge according to claim 9, wherein: the anchoring device further comprises an anchor backing plate, the anchor backing plate is sleeved on the outer wall of the anchor head to divide the anchor head into a first end and a second end, the anchor head protective cover is fastened on the anchor backing plate, and the first end of the anchor head is accommodated in the anchor head protective cover; the cable guide pipe is sleeved outside the stay cable body, one end of the cable guide pipe is fixed on the anchor backing plate, and the second end of the anchor head is accommodated in the cable guide pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110149164 | 2021-02-03 | ||
| CN2021101491640 | 2021-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215714631U true CN215714631U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120526999.9U Active CN215714631U (en) | 2021-02-03 | 2021-03-11 | Stay cable structure of cable-stayed bridge |
| CN202110267720.4A Pending CN113026557A (en) | 2021-02-03 | 2021-03-11 | Stay cable structure of cable-stayed bridge |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110267720.4A Pending CN113026557A (en) | 2021-02-03 | 2021-03-11 | Stay cable structure of cable-stayed bridge |
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|---|---|
| CN (2) | CN215714631U (en) |
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2021
- 2021-03-11 CN CN202120526999.9U patent/CN215714631U/en active Active
- 2021-03-11 CN CN202110267720.4A patent/CN113026557A/en active Pending
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| CN113026557A (en) | 2021-06-25 |
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