CN111424686A - Anchor device free of concrete anchor sealing and capable of limiting cutting length of anchor cable and using method - Google Patents
Anchor device free of concrete anchor sealing and capable of limiting cutting length of anchor cable and using method Download PDFInfo
- Publication number
- CN111424686A CN111424686A CN202010299258.1A CN202010299258A CN111424686A CN 111424686 A CN111424686 A CN 111424686A CN 202010299258 A CN202010299258 A CN 202010299258A CN 111424686 A CN111424686 A CN 111424686A
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- anchor
- limiting
- plate
- protective cylinder
- cable
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an anchor without concrete anchor sealing and capable of limiting cutting length of an anchor rope and a using method. And tensioning and locking after the anchor plate and the clamping piece are installed on the anchor cable, screwing the limiting pile casing onto the anchor plate, cutting the end of the anchor cable to be parallel to the top of the limiting pile casing, and screwing the pile casing cover to finish installation. When the anchor head steel strand and the clamping piece need to be maintained and overhauled regularly or prestress detection and compensation tensioning are carried out, the limiting protection barrel is directly unscrewed to complete the work. According to the invention, concrete anchor sealing is avoided, the anchor head steel strand and the clamping piece are sealed in the limiting protection cylinder to isolate the external air environment, so that the corrosion of the anchor head steel strand and the clamping piece is effectively prevented, meanwhile, the limiting protection cylinder limits the cutting length of the anchor cable, and the problem that the anchor head steel strand cannot be lengthened due to too short reserved length caused by random cutting is avoided.
Description
Technical Field
The invention belongs to the field of high slope treatment and protection, and relates to an anchor device, in particular to an anchor device which is free of concrete anchor sealing and can limit the cutting length of an anchor cable and a using method.
Background
The prestressed anchor cable is widely applied to high slope governing engineering in the fields of railways, highways, municipal administration, mines, water conservancy, China and the like. For a long time, after the prestressed anchor cable is tensioned and locked, in order to avoid corrosion of anchor head steel strands and clamping pieces due to exposure to air, concrete is generally adopted for anchor sealing in design and construction, and engineering practices show that after the concrete anchor is adopted for anchor sealing, when the anchor head steel strands, the clamping pieces and the like are periodically maintained and overhauled, the concrete anchor sealing needs to be mechanically dismantled, so that maintenance and overhaul are inconvenient, the working efficiency is low, and repeated waste of anchor sealing concrete pouring, dismantling and pouring is caused; meanwhile, the concrete anchor sealing is usually caused by water seepage and air contact corrosion of the steel strand and the clamping piece due to concrete gaps, cracks and the like, so that the durability and the safety of the use function of the prestressed anchor cable are greatly reduced.
In addition, when the anchor cable prestress loss is too large or the clamping piece is damaged, the replacement of the prestress compensation or damaged clamping piece needs to be realized by carrying out secondary tensioning on the existing anchor cable. In actual engineering, the existing anchor cable cannot be tensioned for the second time due to the fact that the anchor head steel strand is cut to be too short. The invention patent of application number 200710122633.X discloses a device and a method for detecting the quality of the existing anchoring engineering, the invention patent specially designs a device for lengthening a steel strand aiming at the existing anchoring engineering that the steel strand is cut off, but the application practice shows that when the cutting reserved length of the anchor head steel strand is more than 80mm, the device can realize the secondary tensioning of the existing anchor rope, and the steel strand lengthening is difficult to realize when the reserved length is less than 80 mm.
Disclosure of Invention
The invention aims to provide an anchor without concrete anchor sealing and capable of limiting the cutting length of an anchor cable, and aims to solve the problems that anchor head steel strands and clamping pieces are difficult to corrode and maintain regularly and anchor head steel strands and prestress compensation cannot be realized by secondary tensioning when the anchor head steel strands are cut to be shorter than 80 mm.
In order to solve the technical problems, the invention provides the following technical scheme:
the anchor without concrete sealing and capable of limiting cutting length of the anchor cable comprises an anchor backing plate, an anchor disc and a limiting protection cylinder, wherein through holes corresponding to the anchor cable are distributed in the anchor backing plate and the anchor disc, the anchor backing plate is located on an anchor inclined support, the anchor disc is located on the anchor backing plate, the anchor cable penetrates through the through holes of the anchor backing plate and the anchor disc, the anchor cable is fixed in the through holes of the anchor disc through mounting clamping pieces, the anchor disc is sleeved with the limiting protection cylinder matched with the anchor disc, and a protection cylinder cover covers the top of the limiting protection cylinder.
Furthermore, the lower part of the anchor disc is protruded along the radial direction to form a plate edge, the limiting protective cylinder is sleeved on the anchor disc, the limiting protective cylinder and the anchor disc are screwed and fixed through mutually matched threads, and the bottom end of the limiting protective cylinder is positioned on the plate edge.
Furthermore, press from both sides between the top surface that spacing protects a bottom and board edge and be equipped with No. 1 rubber circle.
Preferably, the periphery of the upper part of the limiting protection cylinder is provided with an external thread, the inner side of the protection cylinder cover is provided with an internal thread matched with the external thread, and the protection cylinder cover is screwed on the upper part of the limiting protection cylinder.
Furthermore, the height of the limiting protective cylinder is 80-150 mm, an inward-turning ring is arranged at the upper end of the limiting protective cylinder, and a No. 2 rubber ring is clamped between the inward-turning ring and the top surface of the protective cylinder cover.
Furthermore, a rubber pad is clamped between the anchor backing plate and the anchor disc, and through holes corresponding to the through holes of the anchor backing plate one by one are distributed on the rubber pad.
The invention also provides a use method of the anchor device which is free of concrete sealing and can limit the cutting length of the anchor cable, and the method specifically comprises the following steps:
s1, sequentially installing an anchor backing plate, a rubber pad, an anchor disc and a clamping piece on the prestressed anchor cable which completes grouting and reaches the age of concrete, and completing tensioning and locking;
s2, installing the No. 1 rubber ring on the anchor disc, enabling the No. 1 rubber ring to be tightly attached to the plate edge, penetrating the whole bundle of anchor cables through the limiting pile casing, and enabling the limiting pile casing to be screwed on the anchor disc;
s3, cutting the steel strand outside the inward-turning circular ring at the upper end of the limiting protective cylinder, wherein the cutting surface of the end of the anchor cable is flush with the top surface of the inward-turning circular ring;
s4, placing the No. 2 rubber ring in the protective cylinder cover, and screwing the protective cylinder cover to the limiting protective cylinder.
The invention has the beneficial effects that: according to the invention, the anchor head steel strand and the clamping piece are sealed and protected through the limiting protective cylinder and the protective cylinder cover, so that the problems of water seepage and air contact corrosion of the steel strand and the clamping piece caused by concrete gaps, cracks and the like after the anchor head is sealed by adopting concrete are solved, and the sealing protection reliability is improved; and secondly, the problem that the concrete anchor block needs to be mechanically broken and the concrete anchor block needs to be poured again after the anchor block is inspected during daily anchor head inspection is solved, the maintenance efficiency of the anchor head is improved, and the repeated waste of anchor block concrete pouring, dismantling and pouring is avoided. In addition, when the anchor head steel strand is cut, the problem that the reserved length of the anchor head steel strand is too short due to random cutting is avoided through the limitation of the limiting protective cylinder, the reserved length of the anchor head steel strand is ensured, and the work of anchor cable prestress detection, clamping piece replacement, compensation tensioning and the like after construction can be smoothly realized. The anchor provided by the invention is simple to apply and install, reliable in sealing protection, and wide in application prospect, and can be used for slope anchor cable engineering in the fields of railways, highways, municipal administration, mines, water conservancy, China and the like.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a protective cover structure;
FIG. 3 is a schematic structural view of No. 1 rubber ring;
FIG. 4 is a schematic structural view of a limiting casing;
FIG. 5 is a schematic structural view of No. 2 rubber ring;
FIG. 6 is a schematic view of the anchor disk structure;
fig. 7 is a schematic view of a rubber pad structure.
In the figure: 1. the anchor is supported obliquely; 2. an anchor cable; 3. an anchor backing plate; 4. a clip; 51. a rubber pad; 511. a rubber pad hole; 52. an anchor disc; 521. an anchor disk hole; 522. a plate edge; no. 53.1 rubber ring; 54. a limiting protective cylinder; 541. an inner inverted circular ring; no. 55.2 rubber ring; 56. a cylinder protecting cover.
Detailed Description
The present invention will be described in further detail with reference to the following examples and the accompanying drawings.
As shown in fig. 1-7, an anchor device capable of preventing concrete anchor sealing and limiting cutting length of an anchor cable comprises an anchor backing plate 3, an anchor disc 52, a limiting casing 54 and a casing cover 56, wherein through holes corresponding to the anchor cable 2 are distributed on the anchor backing plate 3 and the anchor disc 52, the anchor backing plate 3 is positioned on an anchor inclined support 1, the anchor disc 52 is positioned on the anchor backing plate 3, the anchor cable 2 passes through the through holes of the anchor backing plate 3 and the anchor disc 52, the anchor cable 2 is fixed in the through hole of the anchor disc 52 through a mounting clamping piece 4, the limiting casing 54 matched with the anchor disc 52 is sleeved on the anchor disc 52, the lower part of the anchor disc 52 protrudes out along the radial direction to form a plate edge 522, the limiting casing 54 is sleeved on the anchor disc 52, the limiting casing 54 and the anchor disc 52 are screwed and fixed through matched threads, and the bottom end of the limiting casing 54. No. 1 rubber ring 53 is clamped between the bottom end of the limiting protective cylinder 54 and the top surface of the plate edge 522. The protective cylinder cover 56 covers the limiting protective cylinder 54, external threads are arranged on the periphery of the upper part of the limiting protective cylinder 54, internal threads matched with the external threads are arranged on the inner side of the protective cylinder cover 56, and the protective cylinder cover and the internal threads are screwed and fixed. An inward-turning ring 541 is arranged at the upper end of the limiting protective cylinder 54, and a No. 2 rubber ring 55 is clamped between the inward-turning ring 541 and the top surface of the protective cylinder cover 56. Rubber pads 51 are clamped between the anchor backing plate 3 and the anchor disc 52, and through holes for the anchor cables 2 to pass through are distributed on the rubber pads 51 and correspond to the through holes of the anchor backing plate 3 one by one.
The thickness h = 500-700 mm of the anchor disc along the radial projecting plate edge under the anchor disc, and the width b of the plate edge1= 50-80 mm, thickness of the plate along h1= 60-80 mm, limiting wall thickness of protective cylinder1= b1= 50-80 mm, height = h-h1+h2Wherein h is2And = 80-120 mm. The plate plays a sealing role by clamping a No. 1 rubber ring between the top surface and the bottom end of the limiting protection cylinder, and the No. 1 rubber ring is thick2=6mm, width b2Equal to the width b of the plate edge1. The upper end of the limiting protective cylinder is provided with an inward-turning circular ring, and the width b of the inward-turning circular ring3The top surface of the inner-turning ring and the top surface of the protective cylinder cover are provided with a No. 2 rubber ring for sealing, and the No. 2 rubber ring is thick3=10mm, width equal to the inner ring width b3。
Examples
The anchor is adopted to seal the anchor, and the concrete implementation steps are as follows:
as shown in fig. 1 and 2, the anchorage device which is free of concrete sealing and can limit the cutting length of the anchor cable comprises a rubber pad 51; an anchor disc 52; number 1 rubber ring 53; a limiting protective cylinder 54; no. 2 rubber ring 55; a cartridge cover 56; the rubber pad 51 is provided with a rubber pad hole 511 for the steel strand to pass through; anchor disc 52 has a thickness h =55mm and a width b of plate edge 5221=8mm, thickness h of plate edge 5221=10 mm; limiting wall thickness of protective cylinder 5401=b1=8mm, height = h-h1+h2=55-10+100mm =145mm, width b of inner ring 5412=120 mm; the width of the No. 2 rubber ring is equal to the width b of the inner-turning ring 5412=120 cm; the wall thickness of the protective cylinder cover 56 is consistent with that of the limiting protective cylinder 54.
S1, sequentially mounting an anchor backing plate 3, a No. 1 rubber ring 53 and an anchor disc 52 at the end part of the anchor cable 2, and tightening the clamping piece 4 to finish tensioning of the anchor cable.
S2, the No. 1 rubber ring 53 is arranged on the anchor disc 52, the No. 1 rubber ring 53 is tightly attached to the plate edge 522, and the limiting protection cylinder 56 is screwed on the anchor disc 52.
And S3, cutting the anchor cable 2 exposed out of the limiting protective cylinder 56 to enable the cutting surface of the end head of the anchor cable 2 to be flush with the top surface of the inner turning ring 541.
S4, the No. 2 rubber ring is placed in the protective cylinder cover 56, the protective cylinder cover 56 is screwed to the limiting protective cylinder 56, and anchor installation free of concrete anchor sealing and capable of limiting cutting length of the anchor rope is completed.
When the end heads and the clamping pieces of the anchor head steel strands are inspected regularly, the limiting protective cylinders 56 are directly unscrewed, and the anchor head anchor cables 2 and the clamping pieces 4 are maintained and inspected regularly.
When the existing prestress of the anchor cable is detected or the clamping piece is replaced regularly, the limiting protective cylinder 56 is directly unscrewed, and the steel strand with the reserved length larger than 80mm is cut in a limiting manner to be lengthened, so that the prestress compensation of the anchor cable 2 and the replacement of the clamping piece 4 are realized.
Claims (7)
1. The utility model provides an exempt from concrete anchor sealing and ground tackle that can restrict anchor rope cutting length which characterized in that: the anchor plate and the anchor plate are distributed with through holes corresponding to anchor cables, the anchor plate is positioned on the anchor inclined support, the anchor plate is positioned on the anchor plate, the anchor cables penetrate through the through holes of the anchor plate and the anchor plate, the anchor cables are fixed in the through holes of the anchor plate through mounting clamping pieces, the anchor plate is sleeved with a limiting pile casing matched with the anchor plate, and the top of the limiting pile casing is covered with a pile casing cover.
2. The anchor of claim 1, wherein the anchor is free of concrete sealing and capable of limiting the cutting length of the anchor cable, and further comprises: the lower part of the anchor disc is protruded along the radial direction to form a plate edge, the limiting protective cylinder is sleeved on the anchor disc, the limiting protective cylinder and the anchor disc are screwed and fixed through mutually matched threads, and the bottom end of the limiting protective cylinder is positioned on the plate edge.
3. The anchor of claim 2, wherein the anchor is free of concrete sealing and capable of limiting the cutting length of the anchor cable, and further comprises: no. 1 rubber ring is clamped between the bottom end of the limiting protective cylinder and the top surface of the plate edge.
4. An anchor assembly as claimed in any one of claims 1 to 3, which is free of concrete sealing and which limits the cut length of the cable bolt, wherein: the periphery of the upper part of the limiting protection cylinder is provided with an external thread, the inner side of the protection cylinder cover is provided with an internal thread matched with the external thread, and the protection cylinder cover is screwed on the upper part of the limiting protection cylinder.
5. The anchor of claim 4, wherein the anchor is free of concrete sealing and capable of limiting the cutting length of the anchor cable, and further comprises: the height of the limiting protective cylinder is 80-150 mm, an inward-turning ring is arranged at the upper end of the limiting protective cylinder, and a No. 2 rubber ring is clamped between the inward-turning ring and the top surface of the protective cylinder cover.
6. An anchor assembly as claimed in claim 1, 2, 3 or 5, which is free of concrete sealing and which limits the cut length of the cable bolt, wherein: rubber pads are arranged between the anchor backing plate and the anchor disc in a clamping mode, and through holes which correspond to the through holes of the anchor backing plate one by one are distributed in the rubber pads.
7. A method of using an anchorage assembly according to claim 6, wherein: the method specifically comprises the following steps:
s1, sequentially installing an anchor backing plate, a rubber pad, an anchor disc and a clamping piece on the prestressed anchor cable which completes grouting and reaches the age of concrete, and completing tensioning and locking;
s2, installing the No. 1 rubber ring on the anchor disc, enabling the No. 1 rubber ring to be tightly attached to the plate edge, penetrating the whole bundle of anchor cables through the limiting pile casing, and enabling the limiting pile casing to be screwed on the anchor disc;
s3, cutting the steel strand outside the inward-turning circular ring at the upper end of the limiting protective cylinder, wherein the cutting surface of the end of the anchor cable is flush with the top surface of the inward-turning circular ring;
s4, placing the No. 2 rubber ring in the protective cylinder cover, and screwing the protective cylinder cover to the limiting protective cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299258.1A CN111424686A (en) | 2020-04-16 | 2020-04-16 | Anchor device free of concrete anchor sealing and capable of limiting cutting length of anchor cable and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299258.1A CN111424686A (en) | 2020-04-16 | 2020-04-16 | Anchor device free of concrete anchor sealing and capable of limiting cutting length of anchor cable and using method |
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| Publication Number | Publication Date |
|---|---|
| CN111424686A true CN111424686A (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010299258.1A Pending CN111424686A (en) | 2020-04-16 | 2020-04-16 | Anchor device free of concrete anchor sealing and capable of limiting cutting length of anchor cable and using method |
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| CN (1) | CN111424686A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592514A (en) * | 2022-03-14 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Clamping type anchorage device structure convenient for compensation tensioning |
| CN114808954A (en) * | 2022-04-24 | 2022-07-29 | 中建三局集团有限公司 | Anti-corrosion structure of anchor of rear-mounted prestressed filling uplift pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07243214A (en) * | 1994-03-07 | 1995-09-19 | Ibiden Kogyo Kk | Bearing plate device for ground anchor |
| CN102296605A (en) * | 2011-07-18 | 2011-12-28 | 中铁西北科学院研究所有限公司深圳南方分院 | Device and method for compensating or unloading prestress loads of anchor cable |
| CN105464110A (en) * | 2015-12-09 | 2016-04-06 | 西南交通大学 | Construction technology of basalt fiber reinforced material anchor rods |
| CN205530251U (en) * | 2016-04-03 | 2016-08-31 | 北京市勘察设计研究院有限公司 | Recoverable type stock ground tackle |
| CN106284341A (en) * | 2016-08-21 | 2017-01-04 | 中国十九冶集团有限公司南京分公司 | A kind of prestress anchorage cable hillside wall construction technology |
| CN206337560U (en) * | 2016-11-23 | 2017-07-18 | 招商局重庆交通科研设计院有限公司 | The outer anchor head steel strand wires protection device of anchor cable |
| CN109356158A (en) * | 2018-10-30 | 2019-02-19 | 中铁二院贵阳勘察设计研究院有限责任公司 | A kind of prestress anchorage cable can mend tensioning anchor seal structure |
-
2020
- 2020-04-16 CN CN202010299258.1A patent/CN111424686A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07243214A (en) * | 1994-03-07 | 1995-09-19 | Ibiden Kogyo Kk | Bearing plate device for ground anchor |
| CN102296605A (en) * | 2011-07-18 | 2011-12-28 | 中铁西北科学院研究所有限公司深圳南方分院 | Device and method for compensating or unloading prestress loads of anchor cable |
| CN105464110A (en) * | 2015-12-09 | 2016-04-06 | 西南交通大学 | Construction technology of basalt fiber reinforced material anchor rods |
| CN205530251U (en) * | 2016-04-03 | 2016-08-31 | 北京市勘察设计研究院有限公司 | Recoverable type stock ground tackle |
| CN106284341A (en) * | 2016-08-21 | 2017-01-04 | 中国十九冶集团有限公司南京分公司 | A kind of prestress anchorage cable hillside wall construction technology |
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| CN109356158A (en) * | 2018-10-30 | 2019-02-19 | 中铁二院贵阳勘察设计研究院有限责任公司 | A kind of prestress anchorage cable can mend tensioning anchor seal structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592514A (en) * | 2022-03-14 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Clamping type anchorage device structure convenient for compensation tensioning |
| CN114592514B (en) * | 2022-03-14 | 2024-01-26 | 深圳市工勘岩土集团有限公司 | Clamping type anchorage structure convenient for compensation tensioning |
| CN114808954A (en) * | 2022-04-24 | 2022-07-29 | 中建三局集团有限公司 | Anti-corrosion structure of anchor of rear-mounted prestressed filling uplift pile |
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Application publication date: 20200717 |