CN104818717B - A kind of recoverable prestressed anchor head of pressure dispersing type - Google Patents
A kind of recoverable prestressed anchor head of pressure dispersing type Download PDFInfo
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- CN104818717B CN104818717B CN201510211089.0A CN201510211089A CN104818717B CN 104818717 B CN104818717 B CN 104818717B CN 201510211089 A CN201510211089 A CN 201510211089A CN 104818717 B CN104818717 B CN 104818717B
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- anchor
- steel strand
- strand wires
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- post
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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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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of recoverable prestressed anchor head of pressure dispersing type, including: the first anchor head, comprising: the first outer anchor body, interior anchor post, electric heater unit and intermediate plate；Interior anchor post is made up of low melting material.At least one second anchor head, comprising: the second outer anchor body, interior anchor post, electric heater unit and intermediate plate；Second outer anchor body is provided with through wires hole, passes for steel strand wires；Second outer anchor body is provided with slip casting pore, passes for Grouting Pipe.Penetrating the first bundle steel strand wires in first outer anchor body, the first bundle steel strand wires penetrate intermediate plate；Penetrating the first bundle steel strand wires and the second bundle steel strand wires in second outer anchor body, the first bundle steel strand wires penetrate through wires hole, and the second bundle steel strand wires penetrate intermediate plate.Anchor head of the present invention can facilitate, reclaim steel strand wires easily；And steel strand wires are divided into when using two bundles or multi beam, and the steel strand wires of different bundles are respectively by different anchor head locking, and pulling force, pressure dissipation are on different anchor heads, and anchor head uniform force, steel strand wires are difficult to loosen, anchor head pressurized reduces, and are hardly damaged.
Description
Technical field
This utility model belongs to Geotechnical Engineering anchor cable fixing device technical field, particularly relates to a kind of recoverable prestressed anchor head of pressure dispersing type.
Background technology
Current city accelerates, Urban Underground Space Excavation is increasingly paid attention to, the foundation ditch carrying out construction of super highrise building is more and more deeper, and current underground concealed engineering, the improvement of geotechnical slope are the most increasingly paid attention to, the application making prestressed anchorage technology gets more and more, consumption as the steel of main bearing member, steel strand wires etc. is the most increasing, and its using effect is preferable.
Prestress anchoraging is to increase retaining structure or a kind of measure of stability of rock-soil body with anchoring process.Its method is that drilling passes sliding surface that is that likely slide or that slided, one end of reinforcing bar (or cable wire) is fixed in the stable Rock And Soil at the bottom of hole, again by reinforcing bar tension so that certain prestressing force can be produced, then the other end of reinforcing bar is fixed on Rock And Soil or retaining structure surface, the resilience force utilizing reinforcing bar compresses can slidable Rock And Soil or retaining structure, to increase the shearing strength on sliding surface, thus reach to improve Rock And Soil or the purpose of retaining structure stability.Prestress anchorage cable is made up of free segment and anchoring section.
But traditional prestress anchorage cable is disposable, being expendable, it all can be retained in original soil layer after completing function, the most also can invade the property line of adjacent architectural, this not only causes the waste of material, and the exploitation of the adjacent underground space produces obstacle, strengthens difficulty of construction.
Additionally, steel strand wires are all by the locking of anchor head, whole pulling force, pressure all concentrate on an anchor head, make anchor head stress concentrate, are susceptible to that steel strand wires are loosening, the problem of anchor head fail in compression.
Summary of the invention
This utility model provides a kind of recoverable prestressed anchor head of pressure dispersing type, to be solved technical problem is that traditional prestress anchorage cable is single use, not only causes the waste of material, also increases the development obstacles of the adjacent underground space, strengthens difficulty of construction；And steel strand wires are all by the locking of anchor head, whole pulling force, pressure all concentrate on an anchor head, make anchor head stress concentrate, are susceptible to that steel strand wires are loosening, the problem of anchor head fail in compression.
The technical scheme is that a kind of recoverable prestressed anchor head of pressure dispersing type, be used for locking steel strand wires；Comprising:
First anchor head, described first anchor head includes:
First outer anchor body, described first outer anchor body is provided with at least one half anchor hole；
Interior anchor post, described interior anchor post is provided with at least one half anchor hole；Interior anchor post is arranged in described first outer anchor body, and half anchor hole of the first outer anchor body forms anchor hole with half anchor hole of corresponding interior anchor post；Described interior anchor post is made up of low melting material；
Electric heater unit, is arranged on inside described interior anchor post, it is possible to make low melting material melt；The fusing point of described low melting material is between 100 DEG C～120 DEG C；
Intermediate plate, described intermediate plate is arranged in described anchor hole；
At least one second anchor head, described second anchor head includes:
Second outer anchor body, described second outer anchor body is provided with at least one half anchor hole；Described second outer anchor body is provided with through wires hole, passes for steel strand wires；
Interior anchor post, described interior anchor post is provided with at least one half anchor hole；Described interior anchor post is provided with slip casting pore, passes for Grouting Pipe；Interior anchor post is arranged in described second outer anchor body, and half anchor hole of the second outer anchor body forms anchor hole with half anchor hole of corresponding interior anchor post；Described interior anchor post is made up of low melting material；
Electric heater unit, is arranged on inside described interior anchor post, it is possible to make low melting material melt；The fusing point of described low melting material is between 100 DEG C～120 DEG C；
Intermediate plate, described intermediate plate is arranged in described anchor hole；
Penetrating the first bundle steel strand wires in described first outer anchor body, the first bundle steel strand wires penetrate intermediate plate, and when tractive first restraints steel strand wires, frictional force provides the tensioning fixation power of intermediate plate, and intermediate plate is locked automatically by anchor post in extruding；The first bundle steel strand wires and the second bundle steel strand wires are penetrated in described second outer anchor body, first bundle steel strand wires penetrate through wires hole, second bundle steel strand wires penetrate intermediate plate, and when tractive second restraints steel strand wires, frictional force provides the tensioning fixation power of intermediate plate, and intermediate plate is locked automatically by anchor post in extruding.
The recoverable prestressed anchor head of present invention pressure dispersing type as above, further, also includes seal closure, and described seal closure covers described first outer anchor body, the second outer anchor body and interior anchor post, is connected with the sealed bottom of described first outer anchor body and the second outer anchor body.
The recoverable prestressed anchor head of present invention pressure dispersing type as above, further, also includes that support, described support are provided with through wires hole, and steel strand wires pass described through wires hole, are used for preventing steel strand wires from tiing a knot.
The recoverable prestressed anchor head of present invention pressure dispersing type as above, further, described electric heater unit is connected with control piece, power supply by wire, and control piece is used for controlling whether electric heater unit works;Power supply provides the energy for electric heater unit.
The recoverable prestressed anchor head of present invention pressure dispersing type as above, further, one end of described anchor hole to the other end is diminishing structure；Described clamping piece structure is suitable with described anchor hole structure and is arranged in described anchor hole.
The recoverable prestressed anchor head of present invention pressure dispersing type as above, further, described first outer anchor body includes outer anchor ring, top board and base plate；The inwall of outer anchor ring has several half anchor holes along ring layout substantially symmetrical about its central axis；Described top board and the bottom welding of the welded top of described outer anchor ring, described base plate and described outer anchor ring；Top board, base plate are provided with the perforate corresponding with half anchor hole position of outer anchor ring.
The recoverable prestressed anchor head of present invention pressure dispersing type as above, further, described second outer anchor body includes outer anchor ring, top board and base plate；The inwall of outer anchor ring has several half anchor holes along ring layout substantially symmetrical about its central axis；Outer anchor ring is provided with through wires hole, passes for steel strand wires；Described top board and the bottom welding of the welded top of described outer anchor ring, described base plate and described outer anchor ring；Top board, base plate are provided with the perforate that half anchor hole with outer anchor ring, through wires hole and Grouting Pipe hole site are corresponding.
The invention has the beneficial effects as follows:
When this utility model hot melt self-tipping type anchor head uses, penetrate steel strand wires, after steel strand wires pass outer anchor body certain length, in the taper hole in the middle of steel strand wires, outer anchor body, interior anchor post, put into intermediate plate, so when steel strand wires are applied pulling force, steel strand wires, intermediate plate, outer anchor body and interior anchor post can mutual jam-packeds；The pulling force applying steel strand wires is converted into steel strand wires and the frictional force within intermediate plate, is then converted to the pressure of intermediate plate and interior anchor post, then is delivered to base plate, be eventually transferred on cement slurry, is delivered in surrounding soil by the friction between cement slurry and the soil body.When reclaiming prestress anchorage cable, internal anchor post heats, and the heat of electric heater unit release makes interior anchor post melt, and then intermediate plate launches, and steel strand wires disappear with the frictional force of intermediate plate, can facilitate, reclaim steel strand wires easily.
Another advantage of the present invention is, steel strand wires are divided into two bundles or multi beam, and the steel strand wires of different bundles are respectively by different anchor head locking, and pulling force, pressure dissipation are on different anchor heads, and anchor head uniform force, steel strand wires are difficult to loosen, anchor head pressurized reduces, and are hardly damaged.
Accompanying drawing explanation
One the second anchor head generalized section that Fig. 1 provides for the embodiment of the present invention；
One the second anchor head top view that Fig. 2 provides for the embodiment of the present invention；
Fig. 3 is the profile of Fig. 2；
The outer anchor ring schematic diagram of a kind of second outer anchor body that Fig. 4 provides for the embodiment of the present invention；
Fig. 5 is the A-A profile of Fig. 4；
Fig. 6 is the B-B profile of Fig. 4；
The outer anchor ring schematic diagram of the another kind second outer anchor body that Fig. 7 provides for the embodiment of the present invention；
The outer anchor ring schematic diagram of a kind of first outer anchor body that Fig. 8 provides for the embodiment of the present invention；
The interior anchor post schematic diagram of a kind of second anchor head that Fig. 9 provides for the embodiment of the present invention；
Figure 10 is the A-A profile of Fig. 9；
Figure 11 is the B-B profile of Fig. 9；
The interior anchor post schematic diagram of a kind of first anchor head that Figure 12 provides for the embodiment of the present invention；
The base plate schematic diagram of a kind of second outer anchor body that Figure 13 provides for the embodiment of the present invention；
Figure 14 is the profile of Figure 13；
A kind of support schematic diagram that Figure 15 provides for the embodiment of the present invention；
Figure 16 is the profile of Figure 15.
In accompanying drawing, the list of parts representated by each label is as follows:
1, the second outer anchor body, 11, outer anchor ring, 111, half anchor hole of outer anchor ring, 112, through wires hole, 12, top board, 13, base plate, 131, splicing groove, 2, interior anchor post, 21, half anchor hole of interior anchor post, 22, slip casting pore, 3, electric heater unit, 4, intermediate plate, 5, seal closure, 6, support.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, is not intended to limit the scope of the present invention.
The prestress anchorage cable that technical problem to be solved in the utility model is traditional is single use, not only causes the waste of material, also increases the development obstacles of the adjacent underground space, strengthens difficulty of construction；And steel strand wires are all by the locking of anchor head, whole pulling force, pressure all concentrate on an anchor head, make anchor head stress concentrate, are susceptible to that steel strand wires are loosening, anchor head fail in compression.
A kind of recoverable prestressed anchor head of pressure dispersing type, is used for locking steel strand wires；Comprising:
First anchor head, described first anchor head includes:
First outer anchor body, described first outer anchor body is provided with at least one half anchor hole；
Interior anchor post, described interior anchor post is provided with at least one half anchor hole；Interior anchor post is arranged in described first outer anchor body, and half anchor hole of the first outer anchor body forms anchor hole with half anchor hole of corresponding interior anchor post；Described interior anchor post is made up of low melting material；As shown in figure 12, for the interior anchor post schematic diagram of a kind of first anchor head that the embodiment of the present invention provides, described interior anchor post is provided with two and half anchor holes.
Electric heater unit, is arranged on inside described interior anchor post, it is possible to make low melting material melt；The fusing point of described low melting material is between 100 DEG C～120 DEG C；
Intermediate plate, described intermediate plate is arranged in described anchor hole；
At least one second anchor head, as shown in Figure 1, Figure 2 and Figure 3, described second anchor head includes:
Second outer anchor body 1, described second outer anchor body is provided with at least one half anchor hole；Described second outer anchor body is provided with through wires hole 112, passes for steel strand wires；
Interior anchor post 2, described interior anchor post is provided with at least one half anchor hole (half anchor hole 21 of interior anchor post)；Described interior anchor post is provided with slip casting pore 22, passes for Grouting Pipe；Interior anchor post is arranged in described second outer anchor body, and half anchor hole of the second outer anchor body forms anchor hole with half anchor hole of corresponding interior anchor post；Described interior anchor post is made up of low melting material；As shown in Fig. 9, Figure 10 and Figure 11, for the interior anchor post schematic diagram of a kind of second anchor head that the embodiment of the present invention provides, described interior anchor post is provided with two and half anchor holes and a slip casting pore.
Electric heater unit 3, is arranged on inside described interior anchor post, it is possible to make low melting material melt；The fusing point of described low melting material is between 100 DEG C～120 DEG C；
Intermediate plate 4, described intermediate plate is arranged in described anchor hole；
Penetrating the first bundle steel strand wires in described first outer anchor body, the first bundle steel strand wires penetrate intermediate plate, and tractive first is restrainted.During steel strand wires, frictional force provides the tensioning fixation power of intermediate plate, and intermediate plate is locked automatically by anchor post in extruding；The first bundle steel strand wires and the second bundle steel strand wires are penetrated in described second outer anchor body, first bundle steel strand wires penetrate through wires hole, second bundle steel strand wires penetrate intermediate plate, and when tractive second restraints steel strand wires, frictional force provides the tensioning fixation power of intermediate plate, and intermediate plate is locked automatically by anchor post in extruding.
This utility model is as follows for the assembling and use process reclaiming the hot melt self-tipping type anchor head of anchor cable:
During assembling, interior anchor post opsition dependent is put into the first outer anchor body and the second outer anchor body, half anchor hole of the first outer anchor body and the second outer anchor body forms anchor hole with half anchor hole of corresponding interior anchor post, and make interior anchor post be bound in a space the most airtight, when Shi Hanzhang, its stress is more reasonable.In interior anchor post, it is additionally provided with electric heater unit, wire is drawn outside seal closure, in order to when reclaiming prestress anchorage cable, internal anchor post heats.
After completing above-mentioned steps, penetrating steel strand wires, penetrate the first bundle steel strand wires and the second bundle steel strand wires in the second outer anchor body, the first bundle steel strand wires penetrate through wires hole, and the second bundle steel strand wires penetrate intermediate plate；Penetrating the first bundle steel strand wires passed by the through wires hole of the second outer anchor body in first outer anchor body, the first bundle steel strand wires penetrate intermediate plate.After steel strand wires pass outer anchor body certain length, putting into intermediate plate in the taper hole in the middle of steel strand wires, outer anchor body, interior anchor post, so when steel strand wires are applied pulling force, steel strand wires, intermediate plate, outer anchor body and interior anchor post can mutual jam-packeds；The pulling force applying steel strand wires is converted into steel strand wires and the frictional force within intermediate plate, is then converted to the pressure of intermediate plate and interior anchor post, then is delivered to base plate, be eventually transferred on cement slurry, is delivered in surrounding soil by the friction between cement slurry and the soil body.It is an advantage of the current invention that steel strand wires are divided into two bundles or multi beam, the steel strand wires of different bundles are respectively by different anchor head locking, and pulling force, pressure dissipation are on different anchor heads, and anchor head uniform force, steel strand wires are difficult to loosen, anchor head pressurized reduces, and are hardly damaged.
Outside anchorage, through the steel strand wires outsourcing rubber sleeve of anchor hole, make steel strand wires isolate with cement mortar, be coated with one layer of oils and fats outside steel strand wires, to reduce the frictional force of itself and rubber sleeve, in order to recovery power when reclaiming steel strand wires reduces accordingly.
Grouting Pipe passes the second anchor head, until the first anchor head；Clamped by rubber sheet gasket between Grouting Pipe and seal closure, it is ensured that cement mortar does not enter seal closure.Grouting Pipe is made through the part steel of the second anchor head, and remainder is that common material is made, and this way is to make Grouting Pipe can resist the pressure that Grouting Pipe is produced by interior anchor post pressurized, anchor post shape in keeping, and does not deforms.
When reclaiming prestress anchorage cable, internal anchor post heats, and the heat of electric heater unit release makes interior anchor post melt, and then intermediate plate launches, and steel strand wires disappear with the frictional force of intermediate plate, can facilitate, reclaim steel strand wires easily.
In the specific implementation process of the present invention recoverable prestressed anchor head of above-mentioned pressure dispersing type, described first outer anchor body includes outer anchor ring 11, top board 12 and base plate 13；The inwall of outer anchor ring has several half anchor holes (half anchor hole 111 of outer anchor ring) along ring layout substantially symmetrical about its central axis；As shown in Figure 8, for the outer anchor ring schematic diagram of a kind of first outer anchor body that the embodiment of the present invention provides, there are two and half anchor holes；Described top board and the bottom welding of the welded top of described outer anchor ring, described base plate and described outer anchor ring；Top board, base plate are provided with the perforate corresponding with half anchor hole position of outer anchor ring.
Outer anchor ring is made by steel, itself and top board, the chamber of base plate one relative closure of composition, in order to anchor post in loading, during Shi Hanzhang, interior anchor post is in the state of three-dimensional pressurized so that it is modulus increases, and reduces deformation.
In the specific implementation process of the present invention recoverable prestressed anchor head of above-mentioned pressure dispersing type, described second outer anchor body includes outer anchor ring 11, top board 12 and base plate 13；The inwall of outer anchor ring has several half anchor holes (half anchor hole 111 of outer anchor ring) along ring layout substantially symmetrical about its central axis；Outer anchor ring is provided with through wires hole 112, passes for steel strand wires；Described top board and the bottom welding of the welded top of described outer anchor ring, described base plate and described outer anchor ring；Top board, base plate are provided with the perforate that half anchor hole with outer anchor ring, through wires hole and Grouting Pipe hole site are corresponding.As shown in Figs. 13 and 14, base plate 13 schematic diagram for a kind of second outer anchor body that the embodiment of the present invention provides, it includes through wires hole 112 and slip casting pore 22, and in order to make, base plate is easier with the assembling of outer anchor ring, sealing effectiveness is more preferable, the splicing groove 131 that base plate is provided with and outer anchor ring bottom groove is adaptive.
In one embodiment, as shown in Figure 4, Figure 5 and Figure 6, for the outer anchor ring schematic diagram of a kind of second outer anchor body that the embodiment of the present invention provides, two and half anchor holes shown in figure, four through wires holes.
In another kind of embodiment, as it is shown in fig. 7, the outer anchor ring schematic diagram of the another kind second outer anchor body provided for the embodiment of the present invention, two and half anchor holes shown in figure, two through wires holes.
Outer anchor ring constitutes the first second anchor head；Outer anchor ring constitutes the second the second anchor head；Outer anchor ring as shown in Figure 8 constitutes a kind of first anchor head.All steel strand wires are divided into three beams, the respectively first bundle, the second bundle and three beams；The most a branch of is two steel strand wires.During use, the first bundle, the second bundle and three beams steel strand wires both pass through the first second anchor head.First bundle and the second bundle steel strand wires both pass through the second the second anchor head.First bundle steel strand wires connect the first anchor head.The advantage of above-mentioned anchor head is, the steel strand wires of different bundles are respectively by different anchor head locking, and pulling force, pressure dissipation are on different anchor heads, and anchor head uniform force, steel strand wires are difficult to loosen, anchor head pressurized reduces, and are hardly damaged.
In this utility model recoverable prestressed anchor head of above-mentioned pressure dispersing type, there is cement mortar in use and enter the problem of anchor head, the cement of solidification increases the frictional force between outer anchor body, interior anchor ring, intermediate plate, affects the recovery of steel strand wires.Improvement further to above-described embodiment, hot melt self-tipping type anchor head also includes seal closure 5, and described seal closure covers described first outer anchor body, the second outer anchor body and interior anchor post, is connected with the sealed bottom of described first outer anchor body and the second outer anchor body.Seal closure is buckled on base plate, the two fixing connection (such as welding), in case cement mortar enters anchor head, thus affects the recovery of anchor cable.
In this utility model recoverable prestressed anchor head of above-mentioned pressure dispersing type, the problem that there is the steel strands wound knotting of difference bundle in use, affect the recovery of steel strand wires.Improvement further to above-described embodiment, also includes support 6, and as shown in Figure 15 and Figure 16, described support is provided with through wires hole 112 and slip casting pore 22, and steel strand wires pass described through wires hole, are used for preventing steel strand wires from tiing a knot.During use, support is arranged between adjacent anchor head.
In the specific implementation process of this utility model recoverable prestressed anchor head of above-mentioned pressure dispersing type, described electric heater unit is connected with control piece, power supply by wire, and control piece is used for controlling whether electric heater unit works;Power supply provides the energy for electric heater unit.When pending prestress anchorage cable reclaims, energising makes electric heater unit heat, and makes interior anchor post melt, and intermediate plate comes off, and reclaims steel strand wires.
In this utility model recoverable prestressed anchor head of above-mentioned pressure dispersing type, one end of described anchor hole to the other end is diminishing structure；Described clamping piece structure is suitable with described anchor hole structure and is arranged in described anchor hole.One end of described anchor hole to the other end is diminishing structural form i.e. frustoconical construction, it is simple to intermediate plate moves in anchor hole, forms the power of clamping steel strand wires.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (5)
1. the recoverable prestressed anchor head of pressure dispersing type, is used for locking steel strand wires；It is characterized in that, including:
First anchor head, at least one second anchor head, seal closure and support, described first anchor head includes:
First outer anchor body, described first outer anchor body is provided with at least one half anchor hole；
Interior anchor post, described interior anchor post is provided with at least one half anchor hole；Interior anchor post is arranged in described first outer anchor body, and half anchor hole of the first outer anchor body forms anchor hole with half anchor hole of corresponding interior anchor post；Described interior anchor post is made up of low melting material；
Electric heater unit, is arranged on inside described interior anchor post, it is possible to make low melting material melt；The fusing point of described low melting material is between 100 DEG C～120 DEG C；
Intermediate plate, described intermediate plate is arranged in described anchor hole；
Described second anchor head includes:
Second outer anchor body, described second outer anchor body is provided with at least one half anchor hole；Described second outer anchor body is provided with through wires hole, passes for steel strand wires；Described second outer anchor body is provided with slip casting pore, passes for Grouting Pipe；
Interior anchor post, described interior anchor post is provided with at least one half anchor hole；Described interior anchor post is provided with slip casting pore, passes for Grouting Pipe；Interior anchor post is arranged in described second outer anchor body, and half anchor hole of the second outer anchor body forms anchor hole with half anchor hole of corresponding interior anchor post；Described interior anchor post is made up of low melting material；
Electric heater unit, is arranged on inside described interior anchor post, it is possible to make low melting material melt；The fusing point of described low melting material is between 100 DEG C～120 DEG C；
Intermediate plate, described intermediate plate is arranged in described anchor hole；
Penetrating the first bundle steel strand wires in described first outer anchor body, the first bundle steel strand wires penetrate intermediate plate, and when tractive first restraints steel strand wires, frictional force provides the tensioning fixation power of intermediate plate, and intermediate plate is locked automatically by anchor post in extruding；The first bundle steel strand wires and the second bundle steel strand wires are penetrated in described second outer anchor body, first bundle steel strand wires penetrate through wires hole, second bundle steel strand wires penetrate intermediate plate, and when tractive second restraints steel strand wires, frictional force provides the tensioning fixation power of intermediate plate, and intermediate plate is locked automatically by anchor post in extruding；
Described seal closure covers described first outer anchor body, the second outer anchor body and interior anchor post, is connected with the sealed bottom of described first outer anchor body and the second outer anchor body；
Described support is provided with through wires hole, and steel strand wires pass described through wires hole, are used for preventing steel strand wires from tiing a knot.
The recoverable prestressed anchor head of pressure dispersing type the most according to claim 1, it is characterised in that described electric heater unit is connected with control piece, power supply by wire, and control piece is used for controlling whether electric heater unit works;Power supply provides the energy for electric heater unit.
The recoverable prestressed anchor head of pressure dispersing type the most according to claim 1, it is characterised in that one end of described anchor hole to the other end is diminishing structure；Described clamping piece structure is suitable with described anchor hole structure and is arranged in described anchor hole.
4. according to the recoverable prestressed anchor head of pressure dispersing type described in any one of claim 1-3, it is characterised in that described first outer anchor body includes outer anchor ring, top board and base plate；The inwall of outer anchor ring has several half anchor holes along ring layout substantially symmetrical about its central axis；Described top board and the bottom welding of the welded top of described outer anchor ring, described base plate and described outer anchor ring；Top board, base plate are provided with the perforate corresponding with half anchor hole position of outer anchor ring.
The recoverable prestressed anchor head of pressure dispersing type the most according to claim 4, it is characterised in that described second outer anchor body includes outer anchor ring, top board and base plate；The inwall of outer anchor ring has several half anchor holes along ring layout substantially symmetrical about its central axis；Outer anchor ring is provided with through wires hole, passes for steel strand wires；Described top board and the bottom welding of the welded top of described outer anchor ring, described base plate and described outer anchor ring；Top board, base plate are provided with the perforate that half anchor hole with outer anchor ring, through wires hole and Grouting Pipe hole site are corresponding.
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| CN201510211089.0A CN104818717B (en) | 2015-04-29 | 2015-04-29 | A kind of recoverable prestressed anchor head of pressure dispersing type |
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| CN201510211089.0A CN104818717B (en) | 2015-04-29 | 2015-04-29 | A kind of recoverable prestressed anchor head of pressure dispersing type |
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| CN101638892A (en) * | 2008-08-02 | 2010-02-03 | 柳州欧维姆机械股份有限公司 | Pressure-yielding anchorage device and reclaimable anchor cable |
| CN102943474A (en) * | 2012-11-23 | 2013-02-27 | 中冶建筑研究总院有限公司 | Insertion combination type recyclable expanding body anchor rod of high-bearing inner cabin and construction method |
| CN103321222A (en) * | 2013-05-24 | 2013-09-25 | 郭财宝 | Recoverable type anchor rod, pressure-bearing plate type anchor pile and anchoring method |
| CN204662435U (en) * | 2015-04-29 | 2015-09-23 | 中国建筑股份有限公司 | The recoverable prestressed anchor head of a kind of pressure dispersing type |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3195595B2 (en) * | 1998-12-16 | 2001-08-06 | 株式会社三友基礎技術 | Earth anchor with removable anchor wire |
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2015
- 2015-04-29 CN CN201510211089.0A patent/CN104818717B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638892A (en) * | 2008-08-02 | 2010-02-03 | 柳州欧维姆机械股份有限公司 | Pressure-yielding anchorage device and reclaimable anchor cable |
| CN102943474A (en) * | 2012-11-23 | 2013-02-27 | 中冶建筑研究总院有限公司 | Insertion combination type recyclable expanding body anchor rod of high-bearing inner cabin and construction method |
| CN103321222A (en) * | 2013-05-24 | 2013-09-25 | 郭财宝 | Recoverable type anchor rod, pressure-bearing plate type anchor pile and anchoring method |
| CN204662435U (en) * | 2015-04-29 | 2015-09-23 | 中国建筑股份有限公司 | The recoverable prestressed anchor head of a kind of pressure dispersing type |
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