CN103924592B - A kind of pressure-type PHA anchor pole and construction method thereof - Google Patents

A kind of pressure-type PHA anchor pole and construction method thereof Download PDF

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Publication number
CN103924592B
CN103924592B CN201410156871.2A CN201410156871A CN103924592B CN 103924592 B CN103924592 B CN 103924592B CN 201410156871 A CN201410156871 A CN 201410156871A CN 103924592 B CN103924592 B CN 103924592B
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China
Prior art keywords
anchoring
bolt
prefabricated
construction
anchor pole
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CN201410156871.2A
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Chinese (zh)
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CN103924592A (en
Inventor
周同和
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周同和
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Priority to CN201410156871.2A priority Critical patent/CN103924592B/en
Publication of CN103924592A publication Critical patent/CN103924592A/en
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Publication of CN103924592B publication Critical patent/CN103924592B/en

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Abstract

A kind of pressure-type PHA anchor pole and construction method thereof, belong to support technology field, wherein pressure-type PHA anchor pole, including bolt body, being arranged with the outer anchoring body of prefabricated pipe shape outside bolt body, the inner termination of the outer anchoring body of described prefabricated tubulose is provided with the detent mechanism being connected with bolt body inner termination;Its construction method comprises the following steps: (1) pore-forming;(2) bolt body and the outer anchoring body of prefabricated tubulose are implanted;(3) tensioning fixation.Present invention China and foreign countries anchoring body is prefabricated components, can be used directly after buying, and implants post-stretching and locks, it is not necessary to slip casting in hole, and construction method is simple, can significantly reduce the duration;Prefabricated outer anchoring body is higher with cast-in-place anchoring body phase specific strength, it is not easy to cracking destruction phenomenon occurs;Outer anchoring body implant after without taking out, easy construction and effective;Prefabricated outer anchoring body is tightly combined with the soil body in hole, it is to avoid formed gap because slurry shrinks and between the soil body after common bolt slip casting.

Description

A kind of pressure-type PHA anchor pole and construction method thereof

Technical field

The invention belongs to support technology field, be specifically related to a kind of pressure-type PHA anchor pole (prefabricated High strength bolt), also relate to the construction method of this pressure-type PHA anchor pole.

Background technology

Either for the earth's surface such as side slope, foundation ditch engineering still to the underground chamber such as tunnel, stope, suspension roof support is all a kind of very conventional its support reinforcement mode.Existing anchor pole is generally made up of parts such as anchor head, the body of rod, stop grouting plug, backing plate, nuts, cooperatively forms anchoring system in construction with cast-in-place anchoring body, and its construction process is as follows:

(1) plant equipment and material enter job site;

(2) anchor hole location;

(3) rig pore-forming or utilize casing pipe hole forming;

(4) clear hole;

(5) by anchor pole implant holes, and arrange and anchor pole two pipelines side by side;

(6) toward a pressure pouring cement mortar in anchor hole, cast limit, limit detaches a wherein Grouting Pipe (should simultaneously extract sleeve pipe in slip casting when utilizing casing pipe hole forming), makes the infiltration water in anchor hole flow out along this pipeline, until cement mortar fills whole anchor hole;

(7) after slurry initial set, in another pipeline, secondary pressure slip casting is carried out, the space formed after filling up once-cast initial set;

(8) carry out mending slurry for shrinking produced by cement mortar after secondary grouting;

(9) reach to carry out tensioning fixation after design requires until slurry intensity;

(10) cement mortar age to after detect.

Although above-mentioned technique has commonly used, but still there is problems in that

1) no matter using cement mortar or cement mortar is irrigated, all can produce bigger amount of contraction, after solidification, actual filling volume is negative, therefore, there is the frictional force between gap and the soil body between cast-in-place anchoring body and hole wall to reduce, meanwhile, subsoil water easily clamp-ons gap, reduces the frictional force between anchor pole and hole wall further.

2) soil body can be caused very large disturbances by secondary splitting grouting technique, in base pit engineering during application, the foundation ditch periphery soil body can be caused to settle, even cause periphery house, road to ftracture.

3) secondary grouting can be carried out after once grouting initial set, when injecting cement paste intensity reaches to carry out tensioning fixation after design requires, the construction period is longer.

Summary of the invention

The invention aims to provide a kind of easy construction, intensity higher pressure-type PHA anchor pole, the matching operation method simultaneously providing this anchor pole is then another object of the present invention.

Based on above-mentioned purpose, this invention takes following technical scheme: a kind of pressure-type PHA anchor pole, including bolt body, being arranged with the outer anchoring body of prefabricated pipe shape outside described bolt body, the inner termination of the outer anchoring body of described prefabricated tubulose is provided with the detent mechanism being connected with bolt body inner termination.

Described detent mechanism is the baffle plate/bar being connected with bolt body, and baffle plate/pole spacing is outside the outer anchoring body inner termination of prefabricated tubulose.

Described detent mechanism is the hook being connected with bolt body, and the hook portion of hook hangs at the outer anchoring body inner termination of prefabricated tubulose.

The outer anchoring body wall thickness 25mm ~ 40mm of described prefabricated tubulose, external diameter is 150~180mm.

The construction method of described pressure-type PHA anchor pole, comprises the following steps: (1) pore-forming;(2) bolt body and the outer anchoring body of prefabricated tubulose are implanted;(3) tensioning fixation.

Described step (1) injects cement paste dado while using auger stem boring;Rod pulling, then carries out the operation of step (2).

For guaranteeing intensity, the outer anchoring body of the prefabricated tubulose in the present invention is joined cold-drawn low-carbon wire in using C80 concrete and is made;

Compared with common bolt, the pressure-type PHA anchor pole that the present invention provides has a techniques below advantage:

1) outer anchoring body is prefabricated components, can be used directly after buying, and implants post-stretching and locks, it is not necessary to slip casting in hole, can significantly reduce the duration;

2) prefabricated outer anchoring body is higher with cast-in-place anchoring body phase specific strength, it is not easy to cracking destruction phenomenon occurs;

3) without taking out after outer anchoring body is implanted, easy construction and effective;

4) prefabricated outer anchoring body is tightly combined with the soil body in hole, it is to avoid formed gap because slurry shrinks and between the soil body after common bolt slip casting.

Additionally, the construction method of present invention offer is injected while boring cement mortar (retaining wall cement mortar is measured less), the effect strengthening outer anchoring body with the binding strength of surrounding soil can also be played while retaining wall, it is possible to improve construction effect further.

Accompanying drawing explanation

Fig. 1 is the structural representation of the pressure-type PHA anchor pole of the present invention;

Fig. 2 is the structural representation of the embodiment of the present invention 2.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention will be further described.

Embodiment 1

A kind of pressure-type PHA anchor pole, as it is shown in figure 1, include bolt body 2, is arranged with the outer anchoring body 1 of prefabricated pipe shape outside bolt body 2, outer anchoring body 1 wall thickness of prefabricated tubulose is 25mm, and external diameter is 150mm.

The inner termination (towards the one end at the bottom of hole during implantation) of the outer anchoring body 1 of prefabricated tubulose is provided with the baffle plate 4(detent mechanism being connected with bolt body 2 inner termination (towards the one end at the bottom of hole during implantation) by hook 3), baffle plate 4 keeps off outside outer anchoring body 1 inner termination of prefabricated tubulose.

The construction method of pressure-type PHA anchor pole, comprises the following steps:

(1) pore-forming: inject cement paste dado while using auger stem boring, be drilled into and require rod pulling after the degree of depth;

(2) bolt body 2 and the outer anchoring body 1 of prefabricated tubulose are implanted;

(3) tensioning fixation.

Embodiment 2

A kind of pressure-type PHA anchor pole, as in figure 2 it is shown, include bolt body 2, is arranged with the outer anchoring body 1 of prefabricated pipe shape outside bolt body 2, outer anchoring body 1 wall thickness of prefabricated tubulose is 40mm, and external diameter is 180mm.

The inner termination (towards the one end at the bottom of hole during implantation) of the outer anchoring body 1 of prefabricated tubulose is provided with the hook 3(detent mechanism being connected with bolt body 2 inner termination (towards the one end at the bottom of hole during implantation)), the hook portion of hook 3 hangs at outer anchoring body 1 inner termination of prefabricated tubulose.

The construction method of pressure-type PHA anchor pole, comprises the following steps:

(1) pore-forming: inject cement paste dado while using auger stem boring, be drilled into and require rod pulling after the degree of depth;

(2) bolt body 2 and the outer anchoring body 1 of prefabricated tubulose are implanted;

(3) tensioning fixation.

Claims (2)

1. the construction method of a pressure-type PHA anchor pole, it is characterized in that, this pressure-type PHA anchor pole includes bolt body, the outer anchoring body of prefabricated pipe shape it is arranged with outside described bolt body, the inner termination of the outer anchoring body of described prefabricated tubulose is provided with the detent mechanism being connected with bolt body inner termination, described detent mechanism is the hook being connected with bolt body, and the hook portion of hook hangs at the outer anchoring body inner termination of prefabricated tubulose;Construction procedure is: (1) pore-forming: inject cement paste dado while using auger stem boring;Rod pulling;(2) bolt body and the outer anchoring body of prefabricated tubulose are implanted;(3) tensioning fixation.
2. the construction method of pressure-type PHA anchor pole as claimed in claim 1, it is characterised in that outer anchoring body wall thickness 25mm~40mm of described prefabricated tubulose, external diameter is 150~180mm.
CN201410156871.2A 2014-04-18 2014-04-18 A kind of pressure-type PHA anchor pole and construction method thereof CN103924592B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410156871.2A CN103924592B (en) 2014-04-18 2014-04-18 A kind of pressure-type PHA anchor pole and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410156871.2A CN103924592B (en) 2014-04-18 2014-04-18 A kind of pressure-type PHA anchor pole and construction method thereof

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CN103924592A CN103924592A (en) 2014-07-16
CN103924592B true CN103924592B (en) 2016-08-24

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587367A (en) * 2012-04-10 2012-07-18 中冶建筑研究总院有限公司 Mechanical connection type anchor rod
CN203296794U (en) * 2013-04-25 2013-11-20 安徽理工大学 Yielding extensible fiber reinforced plastic anchor rod

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1908322A (en) * 2006-08-04 2007-02-07 曾庆义 Anchor bolt containing framework in grouting and construction method thereof
KR100919821B1 (en) * 2007-08-01 2009-10-06 주식회사 공영비에프엘 Ground enhansing apparatus with anchor rod and method thereof
CN202989919U (en) * 2012-12-21 2013-06-12 中国建筑第四工程局有限公司 Pressure-bearing water-sand-layer anchor rod mounting structure
CN103088819B (en) * 2013-02-22 2016-04-06 北京市政路桥股份有限公司 Construction prestressed cable method
CN203834479U (en) * 2014-04-18 2014-09-17 周同和 Pressure type PHA bolt

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587367A (en) * 2012-04-10 2012-07-18 中冶建筑研究总院有限公司 Mechanical connection type anchor rod
CN203296794U (en) * 2013-04-25 2013-11-20 安徽理工大学 Yielding extensible fiber reinforced plastic anchor rod

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