CN208517934U - A kind of cohelix anchoring type soil layer foundation pit anchor - Google Patents
A kind of cohelix anchoring type soil layer foundation pit anchor Download PDFInfo
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- CN208517934U CN208517934U CN201820927532.3U CN201820927532U CN208517934U CN 208517934 U CN208517934 U CN 208517934U CN 201820927532 U CN201820927532 U CN 201820927532U CN 208517934 U CN208517934 U CN 208517934U
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- 239000002689 soil Substances 0.000 title claims abstract description 70
- 238000004873 anchoring Methods 0.000 title claims abstract description 47
- 238000007569 slipcasting Methods 0.000 claims abstract description 51
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
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- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 238000004080 punching Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
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- 229920002472 Starch Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
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- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to support technology field, more particularly to a kind of cohelix anchoring type soil layer foundation pit anchor, specific anchor rod body is cored steel tube body, anchor rod body is made of front bar and rear bar, spiral helicine first rotation silk anchor leaf is provided on the periphery of front bar, spiral helicine second rotation silk anchor leaf is provided on the periphery of the rear bar, the outer diameter of the first rotation silk anchor leaf is identical as the outer diameter of drill bit, and the outer diameter of the second rotation silk anchor leaf is greater than the outer diameter of drill bit；One end of front bar is connect with drill bit, and the other end of front bar and one end of rear bar connect, and the other end of rear bar sequentially passes through slip casting stop grouting plug, the central through hole of pallet is connect with nut；The port of the rear bar other end is slip casting reserved opening.Cohelix anchoring type soil layer foundation pit anchor described in the utility model has many advantages, such as that speed of application is fast, carrying in time, support cost is low, bearing capacity is strong and environmental pollution is small without punching.
Description
Technical field
The utility model belongs to support technology field, and in particular to a kind of cohelix anchoring type soil layer foundation pit anchor.
Background technique
The research of anchorage technology was achieving the achievement advanced by leaps and bounds in recent years.The application of anchor pole is to construction in underground engineering
Bring qualitative leap.The excellent of mooring rod technique is even more shown using bolt support technology in especially some base pit engineerings
Engineering characteristic.
The application of soil layer foundation pit anchor is nearly all using the bonded structure of mortar injection as anchoring body at present.This anchoring shape
Although formula can adapt to various soil body foundation pit supporting projects extensively.But after its complexity constructed, especially anchoring body perfusion
The intensity waiting time often seriously affects project progress.And soil body supporting core is that anchoring is just able to satisfy construction safety in time
It is required that.If it is possible to the quick anchoring technology of the soil body be solved the problems, such as, for quick, the safety of Canal in Loess Area subway foundation pit
Construction has a very important significance.
To be perfusion mortar form frictional resistance with the soil body for viscous wrap up in of anchoring body to the main anchor type of soil bolt at this stage,
There is defects below in practical engineering applications:
(1) it first to drill, be subsequently placed into anchor pole and Anchor Agent, with anchor rod stirring Anchor Agent, Anchor Agent hardening be waited, because of step
Suddenly cumbersome to cause speed of application slow.
(2) because there is freezing period, anchor pole cannot form support engineering structural body in time.
Utility model content
The purpose of this utility model is to provide a kind of cohelix anchoring type soil layer foundation pit anchor, solution is constructed at this stage
The problem of speed is slow and anchor pole cannot form support engineering structural body in time.
The realization process of the utility model is as follows:
A kind of cohelix anchoring type soil layer foundation pit anchor, including drill bit, anchor rod body, slip casting stop grouting plug, pallet, nut
With slip casting reserved opening；The anchor rod body is cored steel tube body, and the anchor rod body is made of front bar and rear bar, the front bar
It is provided with spiral helicine first rotation silk anchor leaf on periphery, spiral helicine second rotation silk anchor is provided on the periphery of the rear bar
Leaf, the first rotation silk anchor leaf outside diameter d 1 is identical as the outside diameter d 2 of drill bit, and the second rotation silk anchor leaf outside diameter d 3 is greater than drill bit
Outside diameter d 1；One end of the front bar is connect with drill bit, and the other end of the front bar and one end of rear bar connect, and the slip casting is only starched
Plug, pallet, nut are provided with central through hole, and the other end of the rear bar sequentially passes through slip casting stop grouting plug, the center of pallet leads to
Hole is connect with nut；The port of the other end of the rear bar is slip casting reserved opening.
Further, the drill bit is cross alloy bit.
Further, the anchor rod body both ends are provided with external screw thread, and one end of the drill bit is provided with and anchor rod body
One end of the internal screw thread that external screw thread matches, the drill bit and front bar is connected through a screw thread；The front bar and rear bar are integral type
Structure；The central through hole of the nut is provided with the internal screw thread to match with the external screw thread of anchor rod body, the rear bar it is another
End sequentially passes through slip casting stop grouting plug, the central through hole of pallet and nut and is connected through a screw thread.
Further, the outer rim of the spiral helicine first rotation silk anchor leaf is towards pallet.
Further, the outside diameter d 1 of the drill bit and the outside diameter d 2 of the first rotation silk anchor leaf are 32-50mm；The second rotation silk
The outside diameter d 3 of anchor leaf is 2-3mm bigger than the outside diameter d 1 of drill bit.
Further, the diameter d4 of the center-pole of the anchor rod body is 26-32mm.
Further, the anchor rod body is seamless steel pipe.
Further, several circular holes are set in the front bar；The slip casting stop grouting plug is taper, and the circumference of the taper is larger
Face be in contact with pallet.
Further, the length of the length of the front bar and rear bar ratio is 1:1-1:3.
Further, the length of the length of the front bar and rear bar ratio is 1:2.
Base of the cohelix anchoring type soil layer foundation pit anchor described in the utility model in the mechanism of action of research soil layer anchoring
It is design scheme of the leading cohelix anchoring as anchor pole using dense extrusion friction anchoring on plinth.The cohelix anchor
Curable type soil bolt is a kind of tension member of Novel spiral form, makes to revolve silk anchor leaf to anchor pole week by the effect of strength turn-knob
It encloses the soil body to squeeze to form higher anchor force, to bear uplift force, the pulling capacity, the soil pressure for tilting power or retaining wall of works
Power, water pressure, anchorage effect can change stratum dynamics characteristic to improve the self stability of soil layer construction body.
The good effect of the utility model:
(1) speed of application is fast
Without punching in support engineering, using mechanical drilling tool directly by the anchor pole strength precession soil body, anchor pole can be rather
Stratum is pierced in clock, is improved more than ten times compared with traditional grouting rock bolt speed of application, is accelerated speed of application.Cohelix anchor pole
Drill bit and slip casting connector can be carried, punching grouting and reinforcing can be achieved to unconsolidated formation position and once complete, reduce the duration.
(2) carrying in time
For cohelix anchoring type anchor pole during precession, the soil body that anchor pole is taken up space is pressed against periphery point by force
Cloth, so that the nearly surrounding soil of anchor bar body forms uneven crush zone, anchor pole can reach anchoring force request immediately.
(3) support cost is low
Since spiral anchor rod can come into operation immediately after installation is complete, part horizontal support can be replaced in foundation pit,
Engineering cost is saved.
(4) bearing capacity is strong
Its physico mechanical characteristic is set to be greatly enhanced soil layer extruding around anchor pole in cohelix installation process, so that
The lesser body of rod is obtained with higher anchor force.
(5) environmental pollution is small
Cohelix anchoring type anchor bolt construction will not use a large amount of injecting paste materials, therefore will not cause city stratum to stratum
Pollution, later period can reduce cost by drilling machine recycling and reusing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cohelix anchoring type soil layer foundation pit anchor described in the utility model；
Fig. 2 is the structural schematic diagram of the pallet of cohelix anchoring type soil layer foundation pit anchor described in the utility model；
Fig. 3 is the structural representation of the slip casting stop grouting plug of cohelix anchoring type soil layer foundation pit anchor described in the utility model
Figure；
In figure, 1 drill bit, 21 front bars, 211 first rotation silk anchor leaves, 22 rear bars, 221 second rotation silk anchor leaves, 3 slip casting stop grouting plugs,
4 pallets, 5 nuts, 6 slip casting reserved openings, the outer diameter of d1 drill bit, d2 first revolve silk anchor leaf outer diameter, and d3 second revolves silk anchor leaf outer diameter, d4
The diameter of the center-pole of anchor rod body.
Specific embodiment
The utility model is described further below with reference to embodiment.
In order to solve the problems, such as that speed of application is slow at this stage and anchor pole cannot form support engineering structural body in time, this is practical
It is novel that a kind of cohelix anchoring type soil layer foundation pit anchor is provided.
Cohelix anchoring type soil layer foundation pit anchor described in the utility model, is shown in Fig. 1, including drill bit 1, anchor rod body, note
Starch stop grouting plug 3, pallet 4, nut 5 and slip casting reserved opening 6；The drill bit 1 is cross alloy bit, has the spiral shell for preventing end
The effect that silk deforms during precession, the anchor rod body are cored steel tube body, preferably seamless steel pipe, the anchor rod body
It is made of front bar 21 and rear bar 22, spiral helicine first rotation silk anchor leaf 211 is provided on the periphery of the front bar 21, after described
Spiral helicine second rotation silk anchor leaf 221, the first rotation silk anchor leaf 211 and the second rotation silk anchor leaf are provided on the periphery of bar 22
221 are welded in front bar 21 and rear bar 22 after machine is cold worked, the outer rim direction of the spiral helicine first rotation silk anchor leaf 211
Pallet increases the stress of anchor pole, is arranged several circular holes in the front bar 21, it is subsequent can be with high pressure penetration concrete mortar, into one
Step increases the stress of anchor pole, and the outside diameter d 1 of the first rotation silk anchor leaf 211 is identical as the outside diameter d 2 of drill bit 1, for shredding drill bit
The soil body scaled off, the outside diameter d 3 of the second rotation silk anchor leaf 221 are greater than the outside diameter d 1 of drill bit 1, and the second rotation silk anchor leaf 221 can be with
Hole is expanded, and is full of in the second rotation silk anchor leaf 221 by the soil body that front is shredded, it can be straight after anchor pole being made to squeeze into hole
Capacity；The anchor rod body both ends are provided with external screw thread, and one end of the drill bit 1 is provided with the external screw thread phase with anchor rod body
Matched internal screw thread, one end and the drill bit 1 of the front bar 21 are connected through a screw thread；The other end of the front bar 21 and rear bar 22
One end connection, the front bar 21 and rear bar 22 are an integral structure；During the slip casting stop grouting plug 3, pallet 4, nut 5 are provided with
Heart through-hole, the pallet 4, nut 5 are common bolt pallet, nut, mainly play a part of to install fixing anchor bar and stress spread,
The central through hole of the nut 5 is provided with the internal screw thread to match with the external screw thread of anchor rod body, the other end of the rear bar 22
It sequentially passes through slip casting stop grouting plug 3, the central through hole of pallet 4 and nut 5 to be connected through a screw thread, i.e., by slip casting stop grouting plug 3 and pallet 4
It covers on the other end of rear bar 22, then tightens nut 5, slip casting stop grouting plug 3 and pallet 4 are fixed on the another of rear bar 22 at this time
On end, the pallet 4 is shown in that Fig. 2, the slip casting stop grouting plug 3 are taper, and the biggish face of the circumference of the taper connects with pallet 4
Touching, is shown in Fig. 3；The port of the other end of the rear bar 22 is slip casting reserved opening 6, the outside diameter d 1 of the drill bit 1 and the first rotation silk anchor
The outside diameter d 2 of leaf 211 is 32-50mm；The outside diameter d 3 of the second rotation silk anchor leaf 221 is 2-3mm bigger than the outside diameter d 1 of drill bit 1, institute
The diameter d4 for stating the center-pole of anchor rod body is 26-32mm, and the length of the front bar 21 and the length ratio of rear bar 22 are 1:1-1:
3, wherein preferably, the length of the front bar 21 and the length ratio of rear bar 22 are 1:2.
Embodiment 1
Cohelix anchoring type soil layer foundation pit anchor described in the utility model, is shown in Fig. 1, including drill bit 1, anchor rod body, note
Starch stop grouting plug 3, pallet 4, nut 5 and slip casting reserved opening 6；The drill bit 1 is cross alloy bit, has the spiral shell for preventing end
The effect that silk deforms during precession, the anchor rod body are cored steel tube body, preferably seamless steel pipe, the anchor rod body
It is made of front bar 21 and rear bar 22, spiral helicine first rotation silk anchor leaf 211 is provided on the periphery of the front bar 21, after described
Spiral helicine second rotation silk anchor leaf 221, the first rotation silk anchor leaf 211 and the second rotation silk anchor leaf are provided on the periphery of bar 22
221 are welded in front bar 21 and rear bar 22 after machine is cold worked, the outer rim direction of the spiral helicine first rotation silk anchor leaf 211
Pallet increases the stress of anchor pole, is arranged several circular holes in the front bar 21, it is subsequent can be with high pressure penetration concrete mortar, into one
Step increases the stress of anchor pole, and the outside diameter d 1 of the first rotation silk anchor leaf 211 is identical as the outside diameter d 2 of drill bit 1, for shredding drill bit
The soil body scaled off, the outside diameter d 3 of the second rotation silk anchor leaf 221 are greater than the outside diameter d 1 of drill bit 1, and the second rotation silk anchor leaf 221 can be with
Hole is expanded, and is full of in the second rotation silk anchor leaf 221 by the soil body that front is shredded, it can be straight after anchor pole being made to squeeze into hole
Capacity；The anchor rod body both ends are provided with external screw thread, and one end of the drill bit 1 is provided with the external screw thread phase with anchor rod body
Matched internal screw thread, one end and the drill bit 1 of the front bar 21 are connected through a screw thread；The other end of the front bar 21 and rear bar 22
One end connection, the front bar 21 and rear bar 22 are an integral structure；During the slip casting stop grouting plug 3, pallet 4, nut 5 are provided with
Heart through-hole, the pallet 4, nut 5 are common bolt pallet, nut, mainly play a part of to install fixing anchor bar and stress spread,
The central through hole of the nut 5 is provided with the internal screw thread to match with the external screw thread of anchor rod body, the other end of the rear bar 22
It sequentially passes through slip casting stop grouting plug 3, the central through hole of pallet 4 and nut 5 to be connected through a screw thread, i.e., by slip casting stop grouting plug 3 and pallet 4
It covers on the other end of rear bar 22, then tightens nut 5, slip casting stop grouting plug 3 and pallet 4 are fixed on the another of rear bar 22 at this time
On end, the pallet 4 is shown in that Fig. 2, the slip casting stop grouting plug 3 are taper, and the biggish face of the circumference of the taper connects with pallet 4
Touching, is shown in Fig. 3；The port of the other end of the rear bar 22 is slip casting reserved opening 6, the outside diameter d 1 of the drill bit 1 and the first rotation silk anchor
The outside diameter d 2 of leaf 211 is 32mm；The outside diameter d 3 of the second rotation silk anchor leaf 221 is 2mm bigger than the outside diameter d 1 of drill bit 1, the anchor
The diameter d4 of the center-pole of club shaft is 26mm, and the length of the front bar 21 and the length ratio of rear bar 22 are 1:2.
Embodiment 2
Cohelix anchoring type soil layer foundation pit anchor described in the utility model, is shown in Fig. 1, including drill bit 1, anchor rod body, note
Starch stop grouting plug 3, pallet 4, nut 5 and slip casting reserved opening 6；The drill bit 1 is cross alloy bit, has the spiral shell for preventing end
The effect that silk deforms during precession, the anchor rod body are cored steel tube body, preferably seamless steel pipe, the anchor rod body
It is made of front bar 21 and rear bar 22, spiral helicine first rotation silk anchor leaf 211 is provided on the periphery of the front bar 21, after described
Spiral helicine second rotation silk anchor leaf 221, the first rotation silk anchor leaf 211 and the second rotation silk anchor leaf are provided on the periphery of bar 22
221 are welded in front bar 21 and rear bar 22 after machine is cold worked, the outer rim direction of the spiral helicine first rotation silk anchor leaf 211
Pallet increases the stress of anchor pole, is arranged several circular holes in the front bar 21, it is subsequent can be with high pressure penetration concrete mortar, into one
Step increases the stress of anchor pole, and the outside diameter d 1 of the first rotation silk anchor leaf 211 is identical as the outside diameter d 2 of drill bit 1, for shredding drill bit
The soil body scaled off, the outside diameter d 3 of the second rotation silk anchor leaf 221 are greater than the outside diameter d 1 of drill bit 1, and the second rotation silk anchor leaf 221 can be with
Hole is expanded, and is full of in the second rotation silk anchor leaf 221 by the soil body that front is shredded, it can be straight after anchor pole being made to squeeze into hole
Capacity；The anchor rod body both ends are provided with external screw thread, and one end of the drill bit 1 is provided with the external screw thread phase with anchor rod body
Matched internal screw thread, one end and the drill bit 1 of the front bar 21 are connected through a screw thread；The other end of the front bar 21 and rear bar 22
One end connection, the front bar 21 and rear bar 22 are an integral structure；During the slip casting stop grouting plug 3, pallet 4, nut 5 are provided with
Heart through-hole, the pallet 4, nut 5 are common bolt pallet, nut, mainly play a part of to install fixing anchor bar and stress spread,
The central through hole of the nut 5 is provided with the internal screw thread to match with the external screw thread of anchor rod body, the other end of the rear bar 22
It sequentially passes through slip casting stop grouting plug 3, the central through hole of pallet 4 and nut 5 to be connected through a screw thread, i.e., by slip casting stop grouting plug 3 and pallet 4
It covers on the other end of rear bar 22, then tightens nut 5, slip casting stop grouting plug 3 and pallet 4 are fixed on the another of rear bar 22 at this time
On end, the pallet 4 is shown in that Fig. 2, the slip casting stop grouting plug 3 are taper, and the biggish face of the circumference of the taper connects with pallet 4
Touching, is shown in Fig. 3；The port of the other end of the rear bar 22 is slip casting reserved opening 6, the outside diameter d 1 of the drill bit 1 and the first rotation silk anchor
The outside diameter d 2 of leaf 211 is 41mm；The outside diameter d 3 of the second rotation silk anchor leaf 221 is 3mm bigger than the outside diameter d 1 of drill bit 1, the anchor
The diameter d4 of the center-pole of club shaft is 29mm, and the length of the front bar 21 and the length ratio of rear bar 22 are 1:1.
Embodiment 3
Cohelix anchoring type soil layer foundation pit anchor described in the utility model, is shown in Fig. 1, including drill bit 1, anchor rod body, note
Starch stop grouting plug 3, pallet 4, nut 5 and slip casting reserved opening 6；The drill bit 1 is cross alloy bit, has the spiral shell for preventing end
The effect that silk deforms during precession, the anchor rod body are cored steel tube body, preferably seamless steel pipe, the anchor rod body
It is made of front bar 21 and rear bar 22, spiral helicine first rotation silk anchor leaf 211 is provided on the periphery of the front bar 21, after described
Spiral helicine second rotation silk anchor leaf 221, the first rotation silk anchor leaf 211 and the second rotation silk anchor leaf are provided on the periphery of bar 22
221 are welded in front bar 21 and rear bar 22 after machine is cold worked, the outer rim direction of the spiral helicine first rotation silk anchor leaf 211
Pallet increases the stress of anchor pole, is arranged several circular holes in the front bar 21, it is subsequent can be with high pressure penetration concrete mortar, into one
Step increases the stress of anchor pole, and the outside diameter d 1 of the first rotation silk anchor leaf 211 is identical as the outside diameter d 2 of drill bit 1, for shredding drill bit
The soil body scaled off, the outside diameter d 3 of the second rotation silk anchor leaf 221 are greater than the outside diameter d 1 of drill bit 1, and the second rotation silk anchor leaf 221 can be with
Hole is expanded, and is full of in the second rotation silk anchor leaf 221 by the soil body that front is shredded, it can be straight after anchor pole being made to squeeze into hole
Capacity；The anchor rod body both ends are provided with external screw thread, and one end of the drill bit 1 is provided with the external screw thread phase with anchor rod body
Matched internal screw thread, one end and the drill bit 1 of the front bar 21 are connected through a screw thread；The other end of the front bar 21 and rear bar 22
One end connection, the front bar 21 and rear bar 22 are an integral structure；During the slip casting stop grouting plug 3, pallet 4, nut 5 are provided with
Heart through-hole, the pallet 4, nut 5 are common bolt pallet, nut, mainly play a part of to install fixing anchor bar and stress spread,
The central through hole of the nut 5 is provided with the internal screw thread to match with the external screw thread of anchor rod body, the other end of the rear bar 22
It sequentially passes through slip casting stop grouting plug 3, the central through hole of pallet 4 and nut 5 to be connected through a screw thread, i.e., by slip casting stop grouting plug 3 and pallet 4
It covers on the other end of rear bar 22, then tightens nut 5, slip casting stop grouting plug 3 and pallet 4 are fixed on the another of rear bar 22 at this time
On end, the pallet 4 is shown in that Fig. 2, the slip casting stop grouting plug 3 are taper, and the biggish face of the circumference of the taper connects with pallet 4
Touching, is shown in Fig. 3；The port of the other end of the rear bar 22 is slip casting reserved opening 6, the outside diameter d 1 of the drill bit 1 and the first rotation silk anchor
The outside diameter d 2 of leaf 211 is 50mm；The outside diameter d 3 of the second rotation silk anchor leaf 221 is 3mm bigger than the outside diameter d 1 of drill bit 1, the anchor
The diameter d4 of the center-pole of club shaft is 32mm, and the length of the front bar 21 and the length ratio of rear bar 22 are 1:3.
The working principle of cohelix anchoring type soil layer foundation pit anchor described in the utility model:
(1) cohelix anchoring type soil layer foundation pit anchor described in the utility model is mounted on jumbolter and replaces drilling machine
Drilling rod；
(2) it starts drilling machine to screw cohelix anchoring type soil layer foundation pit anchor described in the utility model into soil layer, revolve
Clods breaking under the first rotation silk anchor leaf 211 cuts drill bit 1 during twisting is discharged along the first rotation silk anchor leaf 211, the second rotation silk
Surrounding soil is expanded extruding again and reinforced by anchor leaf 221；
(3) after cohelix anchoring type soil layer foundation pit anchor described in the utility model reaches design position, drilling machine is unloaded；
(4) slurries being injected into anchor rod body from slip casting reserved opening 6, slurries diffuse to the soil body from the circular hole of front bar 21,
The other end of rear bar 22 puts on slip casting stop grouting plug 3, after slurries hardening, covers top tray 4, screw on nut in the other end of rear bar 22
5 is fixed by pallet 4.
During practice of construction, directly it in anchor pole precession soil layer, will can not have to carry out step (4), in order to firmer,
It can implementation steps (4) again.
Cohelix anchoring type soil layer foundation pit anchor described in the utility model is without punching, using mechanical drilling tool directly by two
In the heavy corkscrews anchor pole strength precession soil body, the soil body that the body of rod is taken up space during twisting into is pressed against circumferential distribution by force, is made
It obtains the nearly surrounding soil of anchor bar body and forms uneven crush zone, enhance the anchor force of anchor pole.Have such as soil body foundation pit construction
Lower advantage:
(1) speed of application is fast
Without punching in support engineering, using mechanical drilling tool directly by the anchor pole strength precession soil body, anchor pole can be rather
Stratum is pierced in clock, eliminate in conventional method " it first to drill, be subsequently placed into anchor pole and Anchor Agent, with anchor rod stirring Anchor Agent,
The construction procedure of waiting Anchor Agent hardening ", speed of application improve more than ten times, accelerate speed of application.Described in the utility model two
Heavy corkscrews anchoring type soil layer foundation pit anchor can carry drill bit and slip casting connector, and punching grouting and reinforcing can be achieved to unconsolidated formation position
It is primary to complete, reduce the duration.
(2) carrying in time
Cohelix anchoring type soil layer foundation pit anchor described in the utility model is during precession, soil that anchor pole is taken up space
Body is pressed against circumferential distribution by force, so that the nearly surrounding soil of anchor bar body forms uneven crush zone, anchor pole can reach immediately
Anchor force request.
(3) support cost is low
Since spiral anchor rod can come into operation immediately after installation is complete, part horizontal support can be replaced in foundation pit,
Engineering cost is saved.
(4) bearing capacity is strong
Soil layer around anchor pole is squeezed in cohelix anchoring type soil layer foundation pit anchor installation process described in the utility model
Its physico mechanical characteristic is set to be greatly enhanced, so that the lesser body of rod is obtained with higher anchor force.
(5) environmental pollution is small
The construction of cohelix anchoring type soil layer foundation pit anchor described in the utility model will not use a large amount of injecting paste materials, because
This will not cause city formation contaminant to stratum, and the later period can reduce cost by drilling machine recycling and reusing.
The above content is specific preferred embodiment further description to made by the utility model is combined, no
It can assert that the specific implementation of the utility model is only limitted to these explanations.For the utility model those of ordinary skill in the art
For, without departing from the concept of the premise utility, several simple deduction or replace can also be made, all should be considered as category
In the protection scope of the utility model.
Claims (10)
1. a kind of cohelix anchoring type soil layer foundation pit anchor, it is characterised in that: only starched including drill bit (1), anchor rod body, slip casting
Fill in (3), pallet (4), nut (5) and slip casting reserved opening (6)；The anchor rod body be cored steel tube body, the anchor rod body by
Front bar (21) and rear bar (22) form, and spiral helicine first rotation silk anchor leaf (211) is provided on the periphery of the front bar (21),
Spiral helicine second rotation silk anchor leaf (221) is provided on the periphery of the rear bar (22), first rotation silk anchor leaf (211) is outside
Diameter (d1) is identical as outer diameter (d2) of drill bit (1), and second rotation silk anchor leaf (221) outer diameter (d3) is greater than the outer diameter of drill bit (1)
(d1)；One end of the front bar (21) is connect with drill bit (1), and the other end of the front bar (21) and the one end of rear bar (22) connect
It connects, the slip casting stop grouting plug (3), pallet (4), nut (5) are provided with central through hole, and the other end of the rear bar (22) is successively
Central through hole across slip casting stop grouting plug (3), pallet (4) is connect with nut (5)；The port of the other end of the rear bar (22) is
Slip casting reserved opening (6).
2. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: the drill bit (1) is ten
Font alloy bit.
3. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: the anchor rod body both ends
It is provided with external screw thread, one end of the drill bit (1) is provided with the internal screw thread to match with the external screw thread of anchor rod body, the drill bit
(1) one end with front bar (21) is connected through a screw thread；The front bar (21) and rear bar (22) are an integral structure；The nut
(5) central through hole is provided with the internal screw thread to match with the external screw thread of anchor rod body, and the other end of the rear bar (22) is successively
It is connected through a screw thread across slip casting stop grouting plug (3), the central through hole of pallet (4) and nut (5).
4. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: described spiral helicine first
The outer rim of silk anchor leaf (211) is revolved towards pallet.
5. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: outside the drill bit (1)
Diameter (d1) and the outer diameter (d2) of the first rotation silk anchor leaf (211) are 32-50mm；The outer diameter of second rotation silk anchor leaf (221)
(d3) 2-3mm bigger than the outer diameter (d1) of drill bit (1).
6. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: in the anchor rod body
The diameter (d4) of core bar is 26-32mm.
7. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: the anchor rod body is nothing
Stitch steel pipe.
8. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: set on the front bar (21)
Set several circular holes；The slip casting stop grouting plug (3) is taper, and the biggish face of the circumference of the taper is in contact with pallet (4).
9. cohelix anchoring type soil layer foundation pit anchor according to claim 1, it is characterised in that: the length of the front bar (21)
Degree and the length ratio of rear bar (22) are 1:1-1:3.
10. cohelix anchoring type soil layer foundation pit anchor according to claim 9, it is characterised in that: the front bar (21)
The length ratio of length and rear bar (22) is 1:2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820927532.3U CN208517934U (en) | 2018-06-15 | 2018-06-15 | A kind of cohelix anchoring type soil layer foundation pit anchor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820927532.3U CN208517934U (en) | 2018-06-15 | 2018-06-15 | A kind of cohelix anchoring type soil layer foundation pit anchor |
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| CN208517934U true CN208517934U (en) | 2019-02-19 |
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| CN201820927532.3U Expired - Fee Related CN208517934U (en) | 2018-06-15 | 2018-06-15 | A kind of cohelix anchoring type soil layer foundation pit anchor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042835A (en) * | 2019-04-02 | 2019-07-23 | 泰安市岱宗机电科技开发有限公司 | It is bored certainly for native, layer of sand from anchor recoverable anchor rod and its anchoring process |
-
2018
- 2018-06-15 CN CN201820927532.3U patent/CN208517934U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042835A (en) * | 2019-04-02 | 2019-07-23 | 泰安市岱宗机电科技开发有限公司 | It is bored certainly for native, layer of sand from anchor recoverable anchor rod and its anchoring process |
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