CN102678143B - Special variable angle tensioning device for double-ring pre-stressed anchor for circular tunnel - Google Patents
Special variable angle tensioning device for double-ring pre-stressed anchor for circular tunnel Download PDFInfo
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- CN102678143B CN102678143B CN201210156098.0A CN201210156098A CN102678143B CN 102678143 B CN102678143 B CN 102678143B CN 201210156098 A CN201210156098 A CN 201210156098A CN 102678143 B CN102678143 B CN 102678143B
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- hinge line
- steel hinge
- ground tackle
- stretch
- anchor
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- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a special variable angle tensioning device for a double-ring pre-stressed anchor for a circular tunnel. A stranded steel wire is arranged in an anchor groove between concrete lining members on two sides; an annular anchor, a limiting plate, an integral angulator, a transition plate elongating barrel, a tensioning jack and a tool anchoring plate are arranged on the stranded steel wire from right to left along an axis direction of the stranded steel wire in sequence; and various parts are connected together and are centered. By the device, the variable angle tensioning for the double-ring pre-stressed anchor for the circular tunnel can be realized, the jack can be arranged in a space of a hole outside the anchor groove, the tensioning operation is more convenient, and the size of the anchor groove is greatly reduced. The device can be repeatedly recycled and is convenient to detach.
Description
Technical field
The present invention relates to the special-purpose angle change stretching device of the two circle of a kind of circular tunnel prestress anchorage cable, it is applied to the stretch-draw of the two circle of tunnel prestress anchorage cable, adopts this device can make full use of space in hole, prevents that ground tackle groove is reserved excessive, facilitates anchorage cable stretching.
Background technology
The two circle of tunnel prestress anchorage cable steel hinge line carries out concreting after installing, and when concrete is after reaching by force anchorage cable stretching condition, carries out the stretch-draw of anchor cable.After the two circle of tunnel prestressed anchor cable stretching, lock, then build anchoring section concrete.The tensioning equipment of general conventional anchorage cable stretching is and the same angle of steel hinge line, just very inconvenient for circular tunnel operation, need to ground tackle groove is reserved very greatly, enough place jack and corresponding tensioning equipment thereof, the concrete backfill amount of later stage ground tackle groove is also larger, increase later stage work amount, caused expense to increase.Meanwhile, when prestressed anchor cable stretching or after stretch-draw during anchoring, due to the reason such as process control is not tight, the steel hinge line of prestress anchorage cable can produce stripped thread phenomenon sometimes, makes anchor cable not reach predetermined locking tonnage demand.At this moment, due to the locking of steel hinge line tensioning, cannot loosen, often be difficult to process, this can only be restrainted to prestress anchorage cable according to the use that debases the standard of the tonnage of actual lock, or scrap after processing, take to rearrange the corresponding remedial measures such as anchor cable, but process in any case, finally more or less all can and use function to produce some harmful effects to workmanship, adopt remedial measures and also can increase input.
Summary of the invention
In order to address the above problem, the invention provides a kind of repeatedly repetitive cycling and use, assembling and disassembling is convenient, can directly apply to the special-purpose angle change stretching device of two circle prestress anchorage cables of circular tunnel.
Addressing the above problem taked technical measures is:
A kind of special-purpose angle change stretching device of the two circle prestress anchorage cables for circular tunnel, it is characterized in that: by steel strand 1, instrument anchor slab 2, stretch-draw jack 3, extending 4, rebound 5, whole angulator 6, limiting plate 7 and annular ground tackle 8 form, wherein: the interior installation steel hinge line 1 of ground tackle groove 10 between the concrete lining member 9 of tunnel both sides, axis direction along steel hinge line 1 is arranged on annular ground tackle 8 on steel hinge line 1, limiting plate 7 is arranged on the left side of annular ground tackle 8 and is connected with annular ground tackle 8 after penetrating steel hinge line 1, after whole angulator 6 penetrates steel hinge line 1, be arranged on the left side of limiting plate 7 and be connected with limiting plate 7, rebound 5 and extending 4 penetrate the left side that is arranged on successively angulator 6 after steel hinge line 1, whole angulator 6, rebound 5 and extending 4 are connected in turn, steel strand 1 penetrate in stretch-draw jack 3 and instrument anchor slab 2, stretch-draw jack 3, instrument anchor slab 2 and extending 4 are connected in turn.
The invention has the beneficial effects as follows: use after this device, can realize the varied angle stretch-draw of the two circle of circular tunnel prestress anchorage cable, jack can be arranged on space in the hole outside ground tackle groove, and stretch-draw operation becomes convenient, has greatly reduced the size of ground tackle groove.This device repeatedly repetitive cycling is used, and assembling and disassembling is convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1. steel strand, 2. instrument anchor slab, 3. stretch-draw jack, 4. extending, 5. rebound, 6. whole angulator, 7. limiting plate, 8. annular ground tackle, 9. concrete lining member, 10. ground tackle groove.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
A kind of special-purpose angle change stretching device of the two circle prestress anchorage cables for circular tunnel, it is a kind of special purpose device that can realize the stretch-draw of anchor cable varied angle working out according to the concrete feature of circular tunnel, its structure as shown in Figure 1, by steel strand 1, instrument anchor slab 2, stretch-draw jack 3, extending 4, rebound 5, whole angulator 6, limiting plate 7 and annular ground tackle 8 form, wherein: the interior installation steel hinge line 1 of ground tackle groove 10 between the concrete lining member 9 of tunnel both sides, axis direction along steel hinge line 1 is arranged on annular ground tackle 8 on steel hinge line 1, limiting plate 7 is arranged on the left side of annular ground tackle 8 and is connected with annular ground tackle 8 after penetrating steel hinge line 1, after whole angulator 6 penetrates steel hinge line 1, be arranged on the left side of limiting plate 7 and be connected with limiting plate 7, rebound 5 and extending 4 penetrate the left side that is arranged on successively angulator 6 after steel hinge line 1, whole angulator 6, rebound 5 and extending 4 are connected in turn, steel strand 1 penetrate in stretch-draw jack 3 and instrument anchor slab 2, stretch-draw jack 3, instrument anchor slab 2 and extending 4 are connected in turn.So just completed the installation of special-purpose angle change stretching device, adjusted the position of each parts, after steel hinge line 1 is aligned between two parties, just can start to utilize this device to carry out the varied angle stretch-draw of anchor cable.Steel strand 1 are finished product, instrument anchor slab 2 and the stretch-draw jack 3 of buying, the standard component that annular ground tackle 8 is purchase, and extending 4, rebound 5, whole angulator 6 and limiting plate 7 all adopt steel pipe to be processed into.
Use state of the present invention is: when concrete lining member 9 has been built, after reaching by force stretch-draw standard, can start the stretch-draw anchor of this novel installation and two circle prestress anchorage cables.First, 10 interior installation steel hinge lines 1 in ground tackle groove between the concrete lining member 9 of both sides, axis direction right-to-left along steel hinge line 1 is arranged on annular ground tackle 8, limiting plate 7, whole angulator 6, rebound 5, extending 4, stretch-draw jack 3 and instrument anchor slab 2 on steel hinge line 1 successively, each parts interconnect, central alignment.After installation, during not stretch-draw, because steel hinge line 1 does not have tensioning, steel hinge line 1 is that flexible steel material is made, each parts are installed on steel hinge line 1, can arbitrarily swing or rotate around steel hinge line 1 with steel hinge line 1, also can move forward and backward along steel hinge line 1 axis direction, to this device is placed on to the appropriate location of circular tunnel, do not affect other construction operation.During stretch-draw, this device is close to that side concrete lining member 9 that is connected steel hinge line 1, then tensioning steel hinge line 1, utilize this special use angle change stretching device, regulate the stretch-draw angle of conversion anchor cable to predetermined stretch-draw angle, make this device become state in figure, thereby realize the varied angle stretch-draw of anchor cable.
Claims (1)
1. special-purpose angle change stretching devices for two circle prestress anchorage cables of circular tunnel, it is characterized in that: by steel strand (1), instrument anchor slab (2), stretch-draw jack (3), extending (4), rebound (5), whole angulator (6), limiting plate (7) and annular ground tackle (8) form, wherein: steel hinge line (1) is installed in the ground tackle groove (10) between the concrete lining member (9) of tunnel both sides, axis direction along steel hinge line (1) is arranged on annular ground tackle (8) on steel hinge line (1), limiting plate (7) is arranged on the left side of annular ground tackle (8) and is connected with annular ground tackle (8) after penetrating steel hinge line (1), after whole angulator (6) penetrates steel hinge line (1), be arranged on the left side of limiting plate (7) and be connected with limiting plate (7), rebound (5) and extending (4) penetrate the left side that is arranged on successively angulator (6) after steel hinge line (1), whole angulator (6), rebound (5) and extending (4) are connected in turn, steel strand (1) penetrate in stretch-draw jack (3) and instrument anchor slab (2), stretch-draw jack (3), instrument anchor slab (2) and extending (4) are connected in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156098.0A CN102678143B (en) | 2012-05-21 | 2012-05-21 | Special variable angle tensioning device for double-ring pre-stressed anchor for circular tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156098.0A CN102678143B (en) | 2012-05-21 | 2012-05-21 | Special variable angle tensioning device for double-ring pre-stressed anchor for circular tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678143A CN102678143A (en) | 2012-09-19 |
| CN102678143B true CN102678143B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210156098.0A Active CN102678143B (en) | 2012-05-21 | 2012-05-21 | Special variable angle tensioning device for double-ring pre-stressed anchor for circular tunnel |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961273A (en) * | 2022-05-14 | 2022-08-30 | 中国水利水电第七工程局有限公司 | Prestressed steering tensioning construction method in narrow space |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3174204A (en) * | 1963-04-15 | 1965-03-23 | Chester I Williams | Anchor system for an invert form |
| EP0364802B1 (en) * | 1988-10-08 | 1992-08-05 | Dyckerhoff & Widmann Aktiengesellschaft | Anchoring device for the tensioning rod of an anchor, particularly for a rock bolt |
| CN2825953Y (en) * | 2005-07-18 | 2006-10-11 | 中国矿业大学 | Tensioning device dedicated for three-dimensional anchor cable supporting |
| CN201284461Y (en) * | 2008-07-04 | 2009-08-05 | 吉林省水利科学研究院 | Apparatus with convenient pre-stress anchor cable anchorage |
| CN202628129U (en) * | 2012-05-21 | 2012-12-26 | 中国水利水电第六工程局有限公司 | Angle-changeable device special for double-ring pre-stress anchor cable for round tunnel |
-
2012
- 2012-05-21 CN CN201210156098.0A patent/CN102678143B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3174204A (en) * | 1963-04-15 | 1965-03-23 | Chester I Williams | Anchor system for an invert form |
| EP0364802B1 (en) * | 1988-10-08 | 1992-08-05 | Dyckerhoff & Widmann Aktiengesellschaft | Anchoring device for the tensioning rod of an anchor, particularly for a rock bolt |
| CN2825953Y (en) * | 2005-07-18 | 2006-10-11 | 中国矿业大学 | Tensioning device dedicated for three-dimensional anchor cable supporting |
| CN201284461Y (en) * | 2008-07-04 | 2009-08-05 | 吉林省水利科学研究院 | Apparatus with convenient pre-stress anchor cable anchorage |
| CN202628129U (en) * | 2012-05-21 | 2012-12-26 | 中国水利水电第六工程局有限公司 | Angle-changeable device special for double-ring pre-stress anchor cable for round tunnel |
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| Publication number | Publication date |
|---|---|
| CN102678143A (en) | 2012-09-19 |
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