CN103774662A - Self-injection type overall-length joint control anti-burst anchor rod with resistance increase and permeability prevention - Google Patents

Self-injection type overall-length joint control anti-burst anchor rod with resistance increase and permeability prevention Download PDF

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Publication number
CN103774662A
CN103774662A CN201410023720.XA CN201410023720A CN103774662A CN 103774662 A CN103774662 A CN 103774662A CN 201410023720 A CN201410023720 A CN 201410023720A CN 103774662 A CN103774662 A CN 103774662A
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CN
China
Prior art keywords
anchor
anchor rod
self
stop
head
Prior art date
Application number
CN201410023720.XA
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Chinese (zh)
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CN103774662B (en
Inventor
吕祥锋
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北京市市政工程研究院
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Priority to CN201410023720.XA priority Critical patent/CN103774662B/en
Publication of CN103774662A publication Critical patent/CN103774662A/en
Application granted granted Critical
Publication of CN103774662B publication Critical patent/CN103774662B/en

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Abstract

The invention discloses a self-injection type overall-length joint control anti-burst anchor rod with resistance increase and permeability prevention. The self-injection type overall-length joint control anti-burst anchor rod comprises an anchor rod body, a tension end head, a pressing clamping type expansion anchor head, a stop-grouting plug, a tray, a non-slip mat and a chuck, wherein a hollow grouting hole is formed in the anchor rod body; the tension end head is arranged at one end of the anchor rod body, and an anchor rod aperture running through the hollow grouting hole is formed in the tension end head; the pressing clamping type expansion anchor head is connected with the other end of the tension end head of the anchor rod body through screw threads in a fastening manner; the stop-grouting plug is arranged at the position close to the anchor rod aperture so as to prevent grout from overflowing; the tray is adjustably arranged on the anchor rod body through a nut and supports the stop-grouting plug; the non-slip mat is arranged between the tray and the nut; the chuck is arranged at the outermost end of the tension end head. The anchor rod disclosed by the invention realizes self-injection, overall-length stress and frictional resistance increase, the degree of density of an anchoring stratum is increased, the strength of the anchoring stratum is improved, water permeability can be prevented, and the tray can deform under the burst effect so that the tray is prevented from being damaged. The self-injection type overall-length joint control anti-burst anchor rod is suitable for permeability prevention of the stratum containing water and poisonous gas and quick strengthening of rock layers.

Description

A kind of self-filled type total length increasing prevention is oozed joint control antiknock and is rushed anchor pole

Technical field

The present invention relates to a kind of self-filled type total length increases to stop and oozes joint control antiknock and rush anchor pole.

Background technology

Bolt anchorage is a conventional engineering of geotechnical engineering field, and broken rock or caving ground have been played to good reinforce stabilization effect.

At present, common bolt often uses plain bar, indented bars or Ribbed Bar as anchor bar body, and common bolt pallet has cement pallet, wood composite pallet and steel plate pallet, and it is little that common bolt is reinforced rear anchor bar body increasing resistance, and stressed concentrated at anchor pole and pallet position, easily destroy.

Reinforcement with prestressed anchor can improve consolidation effect, mainly contains end bolt and grouting reinforcement and cartridge bag anchoring, because end slip casting anchoring need to be injected chemical grout to termination point of anchor rod, have the problems such as cost rising, complex procedures and contaminated environment, and it is little to apply prestressing force; Cartridge bag anchoring is to utilize dry powdered cement mortar and the special permeable paper bag of powder accelerator mixture to wrap up in, and through the direct anchoring of water soaking, its construction is simple, but can not guarantee that anchor pole is positioned at center, applies prestressing force also very little.

Summary of the invention

The invention provides one applies large, the free from environmental pollution and simple self-filled type total length of constructing of prestressing force and increases to stop and ooze joint control antiknock and rush anchor pole.

Self-filled type total length of the present invention increases to stop oozes joint control antiknock and rushes anchor pole and comprise:

Anchor bar body, is provided with hollow injected hole in described anchor bar body;

Stretch-draw termination, is arranged on anchor bar body one end, is provided with the anchor pole aperture connecting with hollow injected hole on described stretch-draw termination;

Pressure-cliping expansion anchor head, is connected by screw threads for fastening with the other end of anchor bar body stretch-draw termination;

Stop grouting plug, is arranged on the position in the close described anchor pole aperture of described anchor bar body, in case grouting liquid is excessive;

Pallet, is arranged on described anchor bar body by nut is adjustable, and withstands described stop grouting plug;

Slipmat, is arranged between pallet and nut;

Dop, is arranged on described stretch-draw termination outermost end.

Preferably, described anchor bar body is provided with conical elongation frictional resistance section, extending in stretch-draw effect inferior pyramidal elongation frictional resistance section; Anchor bar body total length is provided with and increases resistance screw thread and protruding tooth.

Preferably, described pressure-cliping expansion anchor head expands into the horizon bar of 90 ° of 4 angles under pushing effect.

Preferably, described pallet can deform under quick-fried punching effect.

The present invention utilizes pushing force that pressure-cliping is expanded to the horizon bar that anchor head expands into 90 ° of 4 angles anchored end is provided, use hollow injected hole to inject slurries in bolthole, stretching anchor rod body, slurries solidify strengthening synchronizes with putting, increase frictional resistance by anchor bar body conical elongation frictional resistance section, protruding tooth and increasing resistance screw thread, realize from slip casting, total length is stressed and increase resistance, anchoring stratum compactness increases, intensity improves, can stop water infiltration, pallet deformable under quick-fried punching effect is avoided destroying.

That the present invention is applicable to is moisture, the resistance of toxic gas stratum blends rock-soil layer and reinforces fast.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is pressure-cliping expansion anchor head ground plan;

Fig. 3 is pressure-cliping expansion anchor head contraction state structure chart;

Fig. 4 is pressure-cliping expansion anchor head expansion state structure chart.

The specific embodiment

As shown in Figure 1, self-filled type total length of the present invention increases to stop oozes joint control antiknock and rushes anchor pole and comprise: anchor bar body 1, pallet 6 and pressure-cliping expansion anchor head 12, in anchor bar body 1, be provided with hollow injected hole 10, anchor bar body 1 one end adopts screw threads for fastening to be connected with pressure-cliping expansion anchor head 12, anchor head 12 expands into circular discs under pushing effect, thereby anchored end is provided.

Anchor bar body 1 other end is provided with stretch-draw termination 11, on stretch-draw termination 11, be provided with the anchor pole aperture 13 connecting with hollow injected hole 10, stop grouting plug 5 is arranged on the position in the close anchor pole aperture 13 of anchor bar body 1, pallet 6 withstands stop grouting plug 5 and prevents that slurries are excessive, and be arranged on anchor bar body 1 by nut 8 is adjustable, pallet 6 is arranged on anchor bar body 1 by nut 8 is adjustable, between pallet 6 and nut 8, is provided with slipmat 7, pallet 6 deforms after class in quick-fried punching effect, prevents that anchoring Rock And Soil from destroying.

11 outer ends, stretch-draw termination are provided with dop 9.

Anchor pole is put into after boring, first by anchor pole aperture 13 to 10 slip castings of hollow injected hole, stretching anchor rod fastening nut 8 subsequently, slurries solidify strengthening synchronizes with putting, and realizes the stressed increasing prevention of anchor pole total length and oozes.

Anchor pole is inserted after boring to pressure-cliping expansion anchor head 12 in as the contraction state of Fig. 3.

After 10 slip castings of hollow injected hole, stretching anchor rod is put and is opened after injecting paste material rapid solidification, and pressure-cliping expansion anchor head 12 is in Fig. 2, Fig. 4 state.

Anchor bar body 1 is provided with conical elongation frictional resistance section 2, and extending in stretch-draw effect inferior pyramidal elongation frictional resistance section 2, conical elongation frictional resistance section 2 plays the effect that increases frictional resistance.

Anchor bar body 1 total length is provided with and increases resistance screw thread 4 and protruding tooth 3, thereby has greatly increased the frictional resistance of anchor bar body 1 with slip casting rock-soil layer.

The present invention passes through after 10 slip castings of hollow injected hole in the time of work, utilize dop 9 and stretch-draw termination 11 stretching anchor rods, fastening nut 8, after injecting paste material rapid solidification, put and open, stretching force transmits to anchoring stratum by the conical elongation frictional resistance section on pallet and anchor pole, protruding tooth and increasing resistance screw thread, thereby it is stressed from slip casting and total length that anchor pole is realized, and increase its frictional resistance.

Anchoring stratum compactness increase like this, intensity improve, and also can stop water infiltration, and pallet deformable under quick-fried punching effect, avoid damaging, and control anchoring Rock And Soil destroys.

That the present invention is applicable to is moisture, the resistance of toxic gas stratum blends rock-soil layer and reinforces fast.

Claims (4)

1. self-filled type total length increases to stop and oozes joint control antiknock and rush an anchor pole, it is characterized in that, comprising:
Anchor bar body, is provided with hollow injected hole in described anchor bar body;
Stretch-draw termination, is arranged on anchor bar body one end, is provided with the anchor pole aperture connecting with hollow injected hole on described stretch-draw termination;
Pressure-cliping expansion anchor head, is connected by screw threads for fastening with the other end of anchor bar body stretch-draw termination;
Stop grouting plug, is arranged on the position in the close described anchor pole aperture of described anchor bar body, in case grouting liquid is excessive;
Pallet, is arranged on described anchor bar body by nut is adjustable, and withstands described stop grouting plug;
Slipmat, is arranged between pallet and nut;
Dop, is arranged on described stretch-draw termination outermost end.
2. self-filled type total length according to claim 1 increases to stop and oozes joint control antiknock and rush anchor pole, it is characterized in that: described anchor bar body is provided with conical elongation frictional resistance section, extends frictional resistance section extending at stretch-draw effect inferior pyramidal; Anchor bar body total length is provided with and increases resistance screw thread and protruding tooth.
3. self-filled type total length according to claim 1 increases to stop and oozes joint control antiknock and rush anchor pole, it is characterized in that: described pressure-cliping expansion anchor head expands into the horizon bar of 90 ° of 4 angles under pushing effect.
4. self-filled type total length according to claim 1 increases to stop and oozes joint control antiknock and rush anchor pole, it is characterized in that: described pallet can deform under quick-fried punching effect.
CN201410023720.XA 2014-01-20 2014-01-20 A kind of self-filled type total length increasing prevention is oozed joint control antiknock and is rushed anchor pole CN103774662B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410023720.XA CN103774662B (en) 2014-01-20 2014-01-20 A kind of self-filled type total length increasing prevention is oozed joint control antiknock and is rushed anchor pole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410023720.XA CN103774662B (en) 2014-01-20 2014-01-20 A kind of self-filled type total length increasing prevention is oozed joint control antiknock and is rushed anchor pole

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CN103774662A true CN103774662A (en) 2014-05-07
CN103774662B CN103774662B (en) 2015-10-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453845A (en) * 1983-01-19 1984-06-12 Donan Jr David C Base thrust anchor shell assembly
CN1415805A (en) * 2002-12-12 2003-05-07 上海交通大学 Ship anchor type anchor head of ground anchor in grouting stretch model
CN201406684Y (en) * 2009-04-25 2010-02-17 中铁十二局集团市政工程有限公司 Bottom extension device for prestressed anchor rod of soil nailing wall
CN202139588U (en) * 2011-06-18 2012-02-08 山东大学 Novel self-broaching anchor rod
CN103133026A (en) * 2013-03-26 2013-06-05 安徽理工大学 Novel expansion shell inverted wedge type grouting anchor rod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453845A (en) * 1983-01-19 1984-06-12 Donan Jr David C Base thrust anchor shell assembly
CN1415805A (en) * 2002-12-12 2003-05-07 上海交通大学 Ship anchor type anchor head of ground anchor in grouting stretch model
CN201406684Y (en) * 2009-04-25 2010-02-17 中铁十二局集团市政工程有限公司 Bottom extension device for prestressed anchor rod of soil nailing wall
CN202139588U (en) * 2011-06-18 2012-02-08 山东大学 Novel self-broaching anchor rod
CN103133026A (en) * 2013-03-26 2013-06-05 安徽理工大学 Novel expansion shell inverted wedge type grouting anchor rod

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Inventor after: Wang Fan

Inventor before: Lv Xiangfeng

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