CN103015416A - Anchor cable-pretensioned reaction force device and implementation method of same - Google Patents
Anchor cable-pretensioned reaction force device and implementation method of same Download PDFInfo
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- CN103015416A CN103015416A CN2012105629896A CN201210562989A CN103015416A CN 103015416 A CN103015416 A CN 103015416A CN 2012105629896 A CN2012105629896 A CN 2012105629896A CN 201210562989 A CN201210562989 A CN 201210562989A CN 103015416 A CN103015416 A CN 103015416A
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- anchor cable
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- steel plate
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- concrete cushion
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Abstract
The invention discloses an anchor cable-pretensioned reaction force device and an implementation method of the anchor cable-pretensioned reaction force device. The anchor cable-pretensioned reaction force device comprises a bearing steel plate, limited short reinforcement bars and a concrete cushion, an anchor cable penetration hole is formed in the bearing steel plate. The implementation method of the anchor cable-pretensioned reaction force device comprises the steps: clearing away dust around an orifice of a prestressed anchor cable, paving the concrete cushion, pre-embedding the limited short reinforcement bars in the concrete cushion, evenly distributing the limited short reinforcement bars according to the size and shape of the bearing steel plate, and placing the bearing steel plate on the concrete cushion at the area defined by the limited short reinforcement bars. Proved by practices, the reaction force device and the implementation method are of good choice on shortening the construction period and saving cost, and can provide a reliable technology solution scheme for conducting pretension of the anchor cable in slope (landslide) emergency work in time, and the adaptivity of the prestressed anchor cable in the emergency work can be improved.
Description
Technical field
The present invention relates to the pretensioned counterforce device of a kind of anchor cable and implementation method thereof, particularly the pretensioned counterforce device of anchor cable and the implementation method thereof of the sloping body deformability fast development of control in a kind of limit (cunning) sloping emergency repair engineering.
Background technology
Current, along with the fast development of economy and the increasing of all kinds of infrastructure construction dynamics, the disasters such as slope instability, roadbed slump frequently appear, in order conscientiously to ensure the people's livelihood, authorities all promptly organize relevant unit to carry out emergency repair for this class problem and dispose, with the impact of reduce the disaster on people's production, life.Anchor cable has been played the part of the key player as the technical measures of the disasters such as a kind of reliable improvement slope instability, roadbed slump in the Emergency management engineering.Tight for the emergency repair project construction duration, execution conditions are poor, degree of social concern high, exploiting entity's majority is taked to add the resources such as large equipment, manpower and is dropped into, improve site tissue commanding rank, tasks clear target, strengthen in the process of speedily carrying out rescue work statistical analysis, strengthen key link and the organization and administration measure such as organize and coordinate.
Anchor cable is to be fixed on the domatic counterforce device by the outer end, the other end is anchored at slide plane to pass the prestress wire of slope sliding face in the interior rock mass stability, directly produce sliding resistance at sliding surface, increase antiskid frictional resistance, make structural plane be in impaction state, to improve the globality of slope rock mass, thereby fundamentally improve the mechanical property of rock mass, effectively control the displacement of rock mass, impel it stable, reach the purpose of regulation side slope, landslide and Dangerous Rock Body.That construction prestressed cable is that geological conditions changes is complicated, key project is hidden and construction difficulty special operation greatly, arrange one to be subjected to professional training, to have the professional contingent that enriches construction experience and construct.Construction prestressed cable generally is divided into reinforcing cage peace processed and several steps such as pouring concrete, anchorage cable stretching locking and sealing off and covering anchorage of preparation of construction, boring, anchor cable making and installation, slip casting, framework (anchor pier or grade beam).Usually during construction, the anchor cable of constructing is first done framework (anchor pier or grade beam) again, by the time the concrete strength of framework (anchor pier or grade beam) reach design strength 80% after, can carry out anchorage cable stretching, locking.
Emergency repair engineering for disasters such as slope instability, roadbed slumps, before framework (anchor pier or grade beam) concrete strength meets the requirements of design strength, the prestress anchorage cable that reply has been constructed applies a small amount of prestressing force in advance, effectively to slow down sloping body Creep Rate, this just needs to settle suitable counterforce device.In order to address this problem, China railways department once adopted waste and old sleeper as interim counterforce device, carried out the pre-stretch-draw of anchor cable, had played certain positive role.But the shortcomings such as the method exists, and technical difficulty is large, the waste and old sleeper of raw material obtains difficulty, the affect follow-up framework reinforcing cage system peace of (anchor pier or grade beam) and pouring concrete, so applied on a large scale.
Summary of the invention
The object of the present invention is to provide the pretensioned counterforce device of a kind of anchor cable and implementation method thereof, in order to solve the pretensioned technical problem of anchor cable of the sloping body deformability fast development of control in the sloping emergency repair engineering in limit (cunning).
The object of the present invention is achieved like this:
The pretensioned counterforce device of described a kind of anchor cable comprises the carrying steel plate that is reserved with anchor cable and passes through the hole, spacing bar dowel and three parts of concrete cushion.
The implementation method of the pretensioned counterforce device of described a kind of anchor cable is: remove surface dust around in the prestress anchorage cable aperture, lay concrete cushion, pre-buried spacing bar dowel in the concrete cushion, spacing bar dowel is evenly arranged according to the size and shape of carrying steel plate, and the carrying steel plate is positioned on the concrete cushion of spacing bar dowel institute region.Anchor cable carries out after should being chosen in 14 days of anchor rope grouting pretensioned opportunity, and single-symmetry-grading tension method is adopted in pre-stretch-draw, and the axis of stretch-draw jack must be consistent with the anchor cable axis.
The invention has the beneficial effects as follows: the pretensioned counterforce device of described a kind of anchor cable and implementation method thereof are a kind of good selections of saving duration and cost.Be proven, this counterforce device and implementation method thereof can be in time carries out the pre-stretch-draw of anchor cable in the sloping emergency repair engineering in limit (cunning) reliable technical solution is provided, thereby effectively control the fast development of sloping body deformability, improve the compliance of the prestress anchorage cable in the emergency repair engineering.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is plane structure schematic diagram of the present invention;
Fig. 2 is cross-sectional view of the present invention;
1. carrying steel plates among the figure, 2. spacing bar dowel, 3. concrete cushion, 4. anchor cable, the anchor cable of 5. reserving passes through the hole.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is implemented take technical solution of the present invention as prerequisite; here provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As depicted in figs. 1 and 2, the pretensioned counterforce device of anchor cable of the present invention and implementation method thereof comprise the carrying steel plate 1, spacing bar dowel 2 and the concrete cushion 3 that are reserved with anchor cable and pass through the hole.Remove surface dust around in the prestress anchorage cable aperture, lay concrete cushion 3, concrete cushion 3 interior pre-buried spacing bar dowels 2, spacing bar dowel 2 is evenly arranged according to the size and shape of carrying steel plate 1, and carrying steel plate 1 is positioned on the concrete cushion 3 of 2 regions of spacing bar dowel.Anchor cable carries out after should being chosen in 14 days of anchor rope grouting pretensioned opportunity, and single-symmetry-grading tension method is adopted in pre-stretch-draw, and the axis of stretch-draw jack must be consistent with the anchor cable axis.
The present invention selects and processes the step of carrying steel plate 1:
(1) according to anchor cable aperture periphery topographic and geologic condition, determines the planar dimension that reasonably carries the shape of steel plate 1 and estimate carrying steel plate 1;
(2) according to the compaction rate of anchor cable aperture periphery foundation soil, estimate coefficient of subgrade reaction;
(3) according to the prestressing force value of preparing in the pre-stretching process of anchor cable to apply (general control the design pulling force 20% in), the size of carrying steel plate 1 and the coefficient of subgrade reaction of anchor cable aperture periphery foundation soil, tentative calculation is occuring in the permission ground decrement situation, required steel plate minimum thickness is chosen suitable carrying steel plate 1;
(4) according to the shape and size of the carrying steel plate 1 of determining, the cutting of carrying steel plate 1 according to the diameter of anchor cable bundle, is made the circular opening that is slightly larger than this diameter at central authorities' brill of carrying steel plate 1, so that anchor cable passes again.
The invention process counterforce device also carries out pretensioned concrete grammar and is:
(1) removes prestress anchorage cable aperture surface dust on every side, lay concrete cushion 3;
(2) according to the shape and size of carrying steel plate 1, be evenly arranged spacing bar dowel 2 in the position that is slightly larger than this shape;
(3) spacing bar dowel 2 is embedded in the concrete cushion 3, leaves the part reinforcing bar and appear in concrete cushion 3 outsides, be used for fixing carrying steel plate 1;
(4) anchor cable carries out after should being chosen in 14 days of anchor rope grouting pretensioned opportunity, and single-symmetry-grading tension method is adopted in pre-stretch-draw, and the axis of stretch-draw jack must be consistent with the anchor cable axis.
Claims (4)
1. the pretensioned counterforce device of anchor cable and implementation method thereof is characterized in that: the pretensioned counterforce device of described anchor cable passes through the carrying steel plate (1) in hole, spacing bar dowel (2) and concrete cushion (3) three parts and forms by being reserved with anchor cable; The implementation method of described counterforce device is to remove surface dust on every side in the prestress anchorage cable aperture, lay concrete cushion (3), pre-buried spacing bar dowel (2) in the concrete cushion, spacing bar dowel (2) is evenly arranged according to the size and shape of carrying steel plate (1), and carrying steel plate (1) is positioned on the concrete cushion (3) of spacing bar dowel (2) institute region.
2. the pretensioned counterforce device of anchor cable according to claim 1 and implementation method thereof is characterized in that: being shaped as of carrying steel plate (1) is circular or square, and the center is reserved with the circular opening that passes through for anchor cable.
3. the pretensioned counterforce device of anchor cable according to claim 1 and implementation method thereof, it is characterized in that: spacing bar dowel (2) is evenly arranged according to the size and shape of carrying steel plate (1), and be embedded in advance on the concrete cushion (3), in order to fixing carrying steel plate.
4. the pretensioned counterforce device of anchor cable according to claim 1 and implementation method thereof, it is characterized in that: anchor cable carries out after should being chosen in 14 days of anchor rope grouting pretensioned opportunity, single-symmetry-grading tension method is adopted in pre-stretch-draw, and the axis of stretch-draw jack must be consistent with the anchor cable axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105629896A CN103015416A (en) | 2012-12-11 | 2012-12-11 | Anchor cable-pretensioned reaction force device and implementation method of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105629896A CN103015416A (en) | 2012-12-11 | 2012-12-11 | Anchor cable-pretensioned reaction force device and implementation method of same |
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| Publication Number | Publication Date |
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| CN103015416A true CN103015416A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105629896A Pending CN103015416A (en) | 2012-12-11 | 2012-12-11 | Anchor cable-pretensioned reaction force device and implementation method of same |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62182318A (en) * | 1986-02-04 | 1987-08-10 | Tokyu Constr Co Ltd | Construction work of bearing plate |
| CN2771297Y (en) * | 2005-01-28 | 2006-04-12 | 林新 | Antiskid pile |
| CN1970893A (en) * | 2006-07-13 | 2007-05-30 | 大连理工大学 | Connecting structure for use in piled anchor supporting system and its construction method |
| CN201411699Y (en) * | 2009-05-21 | 2010-02-24 | 王卫东 | Free type singe-aperture multi-anchor-head antiseptic prestressed tendon |
| CN201459776U (en) * | 2009-07-20 | 2010-05-12 | 重庆大学 | Rock slope prestress anchorage cable detection tensioning device |
| CN102002956A (en) * | 2010-12-07 | 2011-04-06 | 武汉大学 | Multi-level fully-closed reinforcement technology of exposed fault zone of excavated side slope |
-
2012
- 2012-12-11 CN CN2012105629896A patent/CN103015416A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62182318A (en) * | 1986-02-04 | 1987-08-10 | Tokyu Constr Co Ltd | Construction work of bearing plate |
| CN2771297Y (en) * | 2005-01-28 | 2006-04-12 | 林新 | Antiskid pile |
| CN1970893A (en) * | 2006-07-13 | 2007-05-30 | 大连理工大学 | Connecting structure for use in piled anchor supporting system and its construction method |
| CN201411699Y (en) * | 2009-05-21 | 2010-02-24 | 王卫东 | Free type singe-aperture multi-anchor-head antiseptic prestressed tendon |
| CN201459776U (en) * | 2009-07-20 | 2010-05-12 | 重庆大学 | Rock slope prestress anchorage cable detection tensioning device |
| CN102002956A (en) * | 2010-12-07 | 2011-04-06 | 武汉大学 | Multi-level fully-closed reinforcement technology of exposed fault zone of excavated side slope |
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Application publication date: 20130403 |