CN218757457U

CN218757457U - Prestressed anchor cable structure

Info

Publication number: CN218757457U
Application number: CN202223033154.XU
Authority: CN
Inventors: 王永锋; 王忠诚; 曹永刚; 张勇; 张正旭; 陈旺; 吕永军; 刘彦; 姜斌; 朱德权; 贾宁
Original assignee: China Railway 20th Bureau Group South Engineering Co Ltd
Current assignee: China Railway 20th Bureau Group South Engineering Co Ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-28
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a prestressed anchor cable structure, which comprises a guide structure, an anchoring section and a free section, wherein the anchoring section is embedded or inserted in a fixed base, and the guide structure, the anchoring section and the free section are connected in sequence; the free section is provided with a first stranded wire structure extending along the length direction in a penetrating mode, an outer sleeve is sleeved on the free section, a connecting piece is wound between the outer sleeve and the joint position of the anchoring section, and the outer sleeve is connected with the anchoring section in a binding mode through the connecting piece. The method is used for solving the problem that the free section of the prestressed anchor cable structure is extremely easy to be corroded by slurry in the processing and installation processes, and avoiding damage caused by environment or external force influence.

Description

Prestressed anchor cable structure

Technical Field

The utility model relates to a construction technical field, concretely relates to prestressed anchorage cable structure.

Background

At present, the existing anchor cable construction process generally needs to manufacture and install the anchor cable on site, and grouting operation is carried out after the installation of the anchor cable is finished.

However, the strength of the free section of the existing prestressed anchor cable structure is not ideal, when the anchor cable structure is applied to complex underground environments such as broken rock strata, silt, quicksand and the like, the free section of the anchor cable structure is easy to burst or be damaged by environmental influence in the tensioning process, and in addition, the anchor cable structure does not have water resistance and stability, and is extremely easy to corrode if contacting with slurries such as cement mortar and a preservative in the processing and installation processes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a prestressed anchorage cable structure for the free section of solving prestressed anchorage cable structure is extremely easily by the problem that the thick liquid corrodes in processing and installation, and avoids leading to damaging because of receiving environment or external force influence.

In order to achieve the purpose, the utility model provides a prestressed anchor cable structure, which comprises a guide structure, an anchoring section and a free section, wherein the anchoring section is embedded or inserted in a fixed base body, and the guide structure, the anchoring section and the free section are connected in sequence;

the free section is provided with a first stranded wire structure extending along the length direction in a penetrating mode, an outer sleeve is sleeved on the free section, a connecting piece is wound between the outer sleeve and the joint position of the anchoring section, and the outer sleeve is connected with the anchoring section in a binding mode through the connecting piece.

In one embodiment, at least one grouting pipe is arranged in the middle of the prestressed anchor cable structure in a penetrating mode and extends along the length direction of the prestressed anchor cable structure.

In one embodiment, an overhead line ring is fixedly arranged between the guide structure and the anchoring section, the overhead line ring comprises an overhead line ring body, a plurality of connecting positions are arranged on the periphery of the overhead line ring body at intervals along the circumferential direction of the overhead line ring body, and the connecting positions are used for respectively passing through a plurality of stranded wires and at least one grouting pipe.

In one embodiment, the grout tube comprises:

the normal-pressure grouting pipe movably penetrates through the anchoring section through the connecting position and is fixed on the stringing ring through a plurality of strands which are woven mutually; and the number of the first and second groups,

the high-pressure grouting pipe is provided with a first end and a second end which are opposite, and the first end of the high-pressure grouting pipe is hermetically fixed at the center of the stringing ring.

In one embodiment, the body of the high-pressure grouting pipe is provided with at least one grout outlet hole at a position corresponding to the anchoring section.

In one embodiment, a second stranded wire structure is arranged in the middle of the anchoring section in a penetrating mode and extends along the length direction of the anchoring section, the second stranded wire structure comprises a plurality of shuttle-shaped structures formed by mutually weaving a plurality of stranded wires, and a hoop rib ring is fixedly arranged between every two adjacent shuttle-shaped structures.

In one embodiment, a plurality of first twisted wire channels are arranged in the middle of the hooping ring at intervals.

In one embodiment, an expansion ring is arranged in the middle of each shuttle-shaped structure and comprises an expansion ring body, and a grouting pipe and a plurality of second stranded wire channels are arranged in the middle of the expansion ring body at intervals corresponding to the grouting pipe.

In an embodiment, the guide structure includes a guide cap and a guide outer sleeve sleeved outside the guide cap, and the middle of the guide cap is penetrated by a grouting pipe and a plurality of third stranded wire channels arranged at intervals corresponding to the grouting pipe.

In an embodiment, the prestressed anchor rope structure further comprises a waist beam portion, the waist beam portion is used for connecting an anchor, the waist beam portion is arranged at one end, away from the anchoring section, of the free section, a backing plate is preset at one side, away from the free section, of the waist beam portion, and a hole is formed in the middle of the backing plate and used for the anchor to penetrate through.

Compared with the prior art the utility model discloses following beneficial effect has:

1. a guide structure is arranged on the prestressed anchor cable structure to ensure smooth anchor descending;

2. the first stranded wire structure penetrates through the middle of the free section and is arranged to extend along the length of the free section so as to enhance the strength of the prestressed anchor cable structure, the outer sleeve is sleeved on the free section so as to further optimize the strength of the free section and avoid the free section from being influenced by the environment or damaged in the tensioning process, the outer sleeve has water resistance and stability, and the anchor cable structure can be effectively prevented from being directly contacted with the external environment or even corroded by slurry;

3. twine between the hookup location of outer sleeve pipe and anchor section and establish the connecting piece to ensure that free section and anchor section are sealed firm connection, avoid leading to damaging because of receiving environment or external force influence, and outside cement mortar, antiseptic etc. get into inside the anchor rope structure when effectively preventing down the anchor, with further protection anchor rope structure, avoid appearing damaging, prolong the life of prestressed anchorage cable structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of a prestressed anchor cable structure according to the present invention;

fig. 2 is a schematic structural view of an embodiment of the guiding structure of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural view of an embodiment of the stringing loop of the present invention;

fig. 5 is a schematic structural view of an embodiment of the expansion ring of the present invention;

fig. 6 is a schematic structural view of an embodiment of the backing plate of the present invention;

fig. 7 is a schematic structural view of another perspective of an embodiment of the backing plate of the present invention;

fig. 8 is a schematic structural view of an embodiment of the anchor device provided on the wale portion of the present invention;

fig. 9 is a schematic structural view of another embodiment of the anchor device provided on the wale portion of the present invention;

in the figure: 10. a pre-stressed anchor cable structure; 110. a guide structure; 111. a guide cap; 112. a guide outer sleeve; 113. a third strand channel; 120. an anchoring section; 121. a second strand structure; 122. a shuttle structure; 123. a stirrup ring; 124. an expansion ring; 1241. an expansion ring body; 1242. a second strand channel; 130. a free section; 131. a first twisted wire structure; 140. a waist rail portion; 141. a base plate; 150. a stringing ring; 151. a stringing ring body; 152. a connection bit; 160. a grouting pipe; 161. a normal pressure grouting pipe; 1611. a first grouting hole; 162. a high-pressure grouting pipe; 1621. a second grouting hole; 170. grouting a channel; 171. a first grouting passage; 172. a second grouting channel; 180. stranding; 20. an anchorage device.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if all the directional indicators in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a certain posture, if the certain posture is changed, the directional indicator is also changed accordingly.

If in the present application the description referring to "first", "second", etc. is used for descriptive purposes only and not to be construed as indicating or implying a relative importance or implying a number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. If in the present invention a description of "a and/or B" is referred to, this means either comprising scheme a or scheme B, or comprising scheme a and scheme B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a prestressed anchorage cable structure 10, refer to fig. 1 to 9, prestressed anchorage cable structure 10 includes guide structure 110, anchor section 120 and free section 130, anchor section 120 is used for pre-buried or cartridge in fixed base, guide structure 110, anchor section 120 and free section 130 connect gradually;

a first stranded wire structure 131 extending along the length direction is arranged in the middle of the free section 130 in a penetrating manner, an outer sleeve (not shown) is sleeved on the free section 130, and a connecting piece is wound between the outer sleeve and the joint position of the anchoring section 120 and connects the outer sleeve and the anchoring section 120 in a binding manner.

The fixing base may be a construction site provided with an anchor hole, and the pre-stressed anchor cable structure 10 may be fed into the hole after the completion of the drilling acceptance at the construction site.

The prestressed anchor cable structure 10 is provided with a guide structure 110 to ensure smooth anchor dropping.

Wear to establish first stranded conductor structure 131 in the middle part of free segment 130, set up first stranded conductor structure 131 and follow the length extension of free segment 130 sets up to strengthen the intensity of prestressed anchorage cable structure 10, establish the outer tube at free segment 130 cover, with the intensity of further optimizing free segment 130, and avoid free segment 130 to receive the environmental impact or appear the damage in the tensioning process, the outer tube has water resistance and stability, can effectively avoid the direct and external environment of anchor rope structure to contact even by the thick liquid corruption.

A connector (not shown) is threaded between the outer sleeve and the engagement position of the anchoring section 120 to ensure that the free section 130 and the anchoring section 120 are tightly and firmly connected to avoid damage caused by environmental or external influences. As an example, the connecting member may adopt a stranded wire structure such as an iron wire and a steel wire, so as to seal the anchoring section and the pipe opening of the outer sleeve, and effectively prevent external cement mortar, a preservative, and the like from entering the anchor cable structure from the joint position of the anchoring section and the pipe opening of the outer sleeve when the anchor is set down, so as to further protect the anchor cable structure, avoid damage, and prolong the service life of the pre-stressed anchor cable structure 10.

As an example, the outer sleeve can adopt a plastic outer sleeve which has enough strength, can ensure that the outer sleeve is not damaged in the installation and processing processes, has water resistance and chemical stability, and has no adverse reaction when being contacted with cement mortar and a preservative. In addition, after the binding of the connecting element, one end of the outer sleeve close to the anchoring section 120 can be fixedly connected and tightly sealed by winding adhesive tape and the like for further protection.

Referring to fig. 7, in an embodiment, at least one grouting pipe 160 is formed in the middle of the prestressed anchor cable structure 10 to extend along the length direction thereof.

As an example, the grouting pipe 160 has sufficient strength to ensure smooth grouting during grouting construction without blockage, pipe burst or breakage and breakage.

Referring to fig. 1, in an embodiment, an overhead wire loop 150 is fixedly disposed between the guiding structure 110 and the anchoring section 120, and the guiding structure 110, the stranded wire 180 and the grouting pipe 160 are fixed by the overhead wire loop 150. The stringing ring 150 includes a stringing ring body 151, the periphery of stringing ring body 151 is equipped with a plurality of positions 152 of connecting along its circumference interval, it is a plurality of connect the position 152 be used for respectively through multichannel stranded conductor 180 and at least one slip casting pipe 160.

In one embodiment, the grout tube 160 includes a normal pressure grout tube 161 and a high pressure grout tube 162:

the atmospheric pressure grouting pipe 161 is movably inserted into the anchoring section 120 through the connecting position 152, and is fixed to the stringing ring 150 through a plurality of braided strands 180; and the number of the first and second groups,

the high pressure grout tube 162 has opposite first and second ends, and the first end of the high pressure grout tube 162 is sealingly fixed to the center of the stringing ring 150.

As an example, the normal pressure grouting pipe 161 may be pulled out and reused after grouting is completed, primary grouting is performed through the normal pressure grouting pipe 161, and the grout shrinks after being solidified, and secondary grouting is performed through the high pressure grouting pipe 162 for replenishing the grout and optimizing the anchoring effect. As an example, for convenience of material drawing and processing, the normal pressure grouting pipe 161 and the high pressure grouting pipe 162 may be made of plastic pipes.

As an example, slurry can be injected into the normal pressure grouting pipe 161 at one time according to construction requirements, and the slurry is continuously supplemented in the grouting process until the grouting is full; after primary grouting is completed through the normal pressure grouting pipe 161, when the grout is solidified to a preset strength requirement, the high pressure grouting pipe 162 is used to inject the grout so as to complete secondary grouting. The slurry can be prepared and injected according to construction requirements, and the injected slurry and the preset strength requirement are not limited.

In an embodiment, the body of the high-pressure grouting pipe 162 is provided with at least one grout outlet (not shown) corresponding to the anchoring section 120.

The first end of the high-pressure grouting pipe 162 is fixed in the middle of the loop 150 in a sealing manner, when the pipe body of the high-pressure grouting pipe 162 is provided with a plurality of grout outlet holes, the plurality of grout outlet holes are arranged at intervals along the pipe body of the high-pressure grouting pipe 162, and grout is discharged from the injected grout through grout outlet liquid arranged along the pipe body.

In an embodiment, a second stranded wire structure 121 extending along the length direction of the anchoring section 120 is arranged in the middle of the anchoring section 120 in a penetrating manner, the second stranded wire structure 121 includes a plurality of shuttle-shaped structures 122 formed by mutually weaving a plurality of stranded wires 180, and a stirrup ring 123 is fixedly arranged between two adjacent shuttle-shaped structures 122.

The second stranded wire structure 121 adopts a plurality of shuttle-shaped structures 122 formed by mutually weaving a plurality of stranded wires 180, the strength can be optimized, and the hoop ring 123 is adopted as an isolation structure to ensure the grouting thickness of the anchoring section 120.

In an embodiment, a plurality of first twisted wire channels are spaced in the middle of the stirrup ring 123. For threading strand 180.

Referring to fig. 5, in an embodiment, an expansion ring 124 is disposed at the middle of each shuttle 122, and the expansion ring 124 includes an expansion ring body 1241, and the grouting pipe 160 and a plurality of second strand channels 1242 are disposed at intervals corresponding to the grouting pipe 160 at the middle of the expansion ring body 1241.

The expansion ring 124 is used as an isolation structure to ensure the grouting thickness of the anchoring section 120 and ensure the stable arrangement structure of the second stranded wire structure 121.

Referring to fig. 1 to 3, in an embodiment, the guide structure 110 includes a guide cap 111 and a guide outer sleeve 112 sleeved outside the guide cap 111, and a grouting pipe 160 and a plurality of third strand channels 113 are disposed in the middle of the guide cap 111 at intervals corresponding to the grouting pipe 160.

As an example, the end of the guide cap 111 may be tapered, or any structure suitable for practical use, and the guide cap 111 may be protected by a guide outer sleeve 112. Further, a rust preventive layer may be applied to the outside of the guide outer sleeve 112 for rust preventive treatment. As an example, after the assembly of the wire loop 150 and the stirrup loop 123 is completed, the guiding structure 110 is installed at the end of the anchoring section 120 away from the free section to be accurately positioned to ensure smooth anchoring. Specifically, to ensure the overall strength and stability, the guide structure 110 may be fixedly coupled to the wire loop 150 by welding or wire bonding.

Referring to fig. 6 to 9, in an embodiment, the prestressed anchor rope structure further includes a waist-beam portion 140, the waist-beam portion 140 is used for connecting an anchor 20, the waist-beam portion 140 is disposed at an end of the free section 130 facing away from the anchoring section 120, a backing plate 141 is preset on a side of the waist-beam portion 140 facing away from the free section 130, and a hole is formed in a middle of the backing plate 141 for the anchor 20 to pass through.

The wale strength is optimized by providing the backing plate 141. It will be appreciated that the waist rail portion and the bolster plate are correspondingly apertured for passage of an anchor therethrough. The grouting pipe 160 penetrates through the waist-beam portion 140, specifically, a grouting channel 170 is arranged on the waist-beam portion 140, the grouting channel 170 comprises a first grouting channel 171 and a second grouting channel 172 which are arranged on the backing plate 141 and in the middle of the waist-beam portion, and is used for respectively passing through a normal pressure grouting pipe 161 and a high pressure grouting pipe 162, the normal pressure grouting pipe 161 is provided with a first grouting hole 1611, the high pressure grouting pipe 162 is provided with a second grouting hole 1621, and according to the actual situation, the first grouting hole 1611 and the second grouting hole 1621 can be respectively arranged at the pipe openings and/or pipe bodies of the normal pressure grouting pipe 161 and the high pressure grouting pipe 162.

As an example, the wale part 140 may be a concrete wale, and the anchor cable may be tensioned when the concrete strength of the anchoring section 120 and the wale part 140 reaches a predetermined strength requirement. The waist beam part 140 is used for connecting the anchorage device 20, and specifically, the striking angle of the anchorage device 20 can be set according to actual needs, and the preset strength requirement, the striking angle and the like can be set according to construction requirements and field construction conditions, and is not particularly limited herein.

The aforesaid only does the utility model discloses an optional embodiment to therefore not restrict the utility model discloses a patent range, all are in the utility model discloses a conceive under, utilize the equivalent structure transform that the content of description and drawing was done, or direct/indirect application all includes in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The prestressed anchor cable structure is characterized by comprising a guide structure, an anchoring section and a free section, wherein the anchoring section is embedded or inserted in a fixed base, and the guide structure, the anchoring section and the free section are sequentially connected;

2. The prestressed anchor rope structure of claim 1, wherein at least one grouting pipe is inserted into the middle of the prestressed anchor rope structure and extends along the length direction of the prestressed anchor rope structure.

3. The prestressed anchor rope structure of claim 2, wherein an overhead wire loop is fixedly arranged between the guide structure and the anchoring section, the overhead wire loop comprises an overhead wire loop body, the periphery of the overhead wire loop body is provided with a plurality of connecting positions at intervals along the circumferential direction of the overhead wire loop body, and the connecting positions are used for respectively passing through a plurality of stranded wires and at least one grouting pipe.

4. The prestressed anchor rope structure of claim 3, wherein said grouting pipe comprises:

the normal pressure grouting pipe is movably arranged in the anchoring section in a penetrating mode through the connecting position and is fixed to the stringing ring through a plurality of strands which are woven mutually; and the number of the first and second groups,

5. The prestressed anchor cable structure of claim 4, wherein the high-pressure grouting pipe has at least one grout outlet at a position corresponding to the anchoring section.

6. The prestressed anchor cable structure of claim 1, wherein a second strand structure is inserted through a middle portion of the anchoring section and extends along a length direction of the anchoring section, the second strand structure includes a plurality of shuttle-shaped structures formed by weaving a plurality of strands, and a stirrup ring is fixedly arranged between two adjacent shuttle-shaped structures.

7. The prestressed anchor rope structure of claim 6, wherein a plurality of first twisted wire passages are provided at intervals in the middle of the tendon ring.

8. The prestressed anchor cable structure of claim 7, wherein an expansion ring is disposed in the middle of each shuttle-shaped structure, and the expansion ring includes an expansion ring body, and a grouting pipe and a plurality of second strand channels are disposed in the middle of the expansion ring body at intervals corresponding to the grouting pipe.

9. The prestressed anchor cable structure of claim 1, wherein the guiding structure includes a guiding cap and a guiding outer sleeve sleeved outside the guiding cap, and a grouting pipe and a plurality of third strand channels are arranged in the middle of the guiding cap at intervals corresponding to the grouting pipe.

10. The prestressed anchor rope structure of any one of claims 1 to 9, further comprising a wale portion for connecting an anchor, wherein the wale portion is disposed at an end of the free section away from the anchor section, a backing plate is preset on a side of the wale portion away from the free section, and a hole is formed in the middle of the backing plate for the anchor to pass through.