CN106223267B - A kind of installation method of multilayer reaming self-locking prestressed anchor - Google Patents
A kind of installation method of multilayer reaming self-locking prestressed anchor Download PDFInfo
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- CN106223267B CN106223267B CN201610768558.3A CN201610768558A CN106223267B CN 106223267 B CN106223267 B CN 106223267B CN 201610768558 A CN201610768558 A CN 201610768558A CN 106223267 B CN106223267 B CN 106223267B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
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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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Abstract
A kind of installation method of multilayer reaming self-locking prestressed anchor, anchor pole therein include anchor bar body, grout pipe（7）, to middle ring（8）, anchor bar body is by six roots of sensation anchor pole monomer（1）It is formed by equilateral hexagon, anchor pole monomer（1）By anchor rod body（2）With lengthening anchor pole（3）Composition, two diagonal anchor pole monomers（1）Pass through nut respectively for one group（5）With one from Zhang Zisuo anchor heads（6）It is connected to be formed three layers from Zhang Zisuo anchor heads（6）, three layers from Zhang Zisuo anchor heads（6）It is equally spaced, grout pipe（7）From lengthening anchor pole（3）Rear end extends to anchor rod body（2）Front end.Method therein includes drill straight hole, reaming, and borehole cleaning assembles Anchoring part, lifts anchor pole, prestress application.From Zhang Zisuo anchor heads（6）Share anchor force, the reliability of anchoring is high, there is higher use value.
Description
Technical field
The present invention relates to a kind of anchor poles, more specifically to a kind of multilayer reaming self-locking prestressed anchor and its installation side
Method belongs to postposition large-tonnage anchorage technology domain technology field.
Background technology
For some dam gate piers there are horizontal interlayer seam, on the one hand horizontal interlayer seam to weaken the rigidity and globality of gate pier,
Operating condition is more unfavorable；On the other hand in the flood discharge of overfall dam part lock hole, the interlayer seam originally deposited locally tool is easily made
Trend is opened, the durability of gate pier will be influenced under the aerial drainage exciting dynamic loading of lock hole.For this purpose, initial stage gate pier need to be applied vertical
Compressive pre-stress by prestressed reinforcement, improves the globality and durability of gate pier.
It it requires that dam consolidation is applied, it is necessary to there is rational safety stock as important hydraulic engineering due to dam
Prestressing tonnage is higher, limit anchoring force is larger；Therefore it is required that prestressed anchor drilling depth is big, required precision is high, and pass
The prestressed anchor drilling depth of system is little, precision is not high, it is difficult to meet engineering demand.
The content of the invention
It is an object of the invention to be directed to the problems such as existing prestressed anchor drilling depth is little, precision is not high, provide
A kind of multilayer reaming self-locking prestressed anchor and its installation method.
To achieve the above object, institute is the present invention using technical solution：A kind of multilayer reaming self-locking prestressed anchor,
Including anchor bar body, grout pipe, to middle ring, the anchor bar body is made of six roots of sensation anchor pole monomer by equilateral hexagon, the anchor
Bar monomer is made of anchor rod body and lengthening anchor pole, passes through connector between the anchor rod body rear end and lengthening anchor pole front end
It is connected, the anchor rod body front end is closing taper, and two diagonal anchor pole monomers pass through nut and one respectively for one group
A to be connected to be formed three layers from Zhang Zisuo anchor heads from Zhang Zisuo anchor heads, described three layers from the equidistant cloth of Zhang Zisuo anchor heads
It puts, the grout pipe extends to anchor rod body front end from anchor pole rear end is lengthened.
Described three layers from spacing is distributed at intervals of 3m up and down between Zhang Zisuo anchor heads.
The anchor pole monomer is made by fining twisted steel.
A kind of installation method of multilayer reaming self-locking prestressed anchor, comprises the following steps：
Step 1, using engineering investigation drilling machine drill straight hole, with laser ranging inclinometer to drilling depth and vertical after pore-forming
Degree is checked, it is desirable that the borehole perpendicularity deviation of pore-forming is less than 5 ‰, and confirms bottom hole 8m depth scopes by coring during pore-forming
Concrete core sample is closely knit, needs to deepen drilling depth if leakiness, it is ensured that the quality for anchoring section concrete meets design requirement；
After drilling construction, the bottom hole to drill in step 1 is carried out reaming, reaming hole shape with reaming bit for step 2
For inverted cone surface, reaming bit is made once to expand one layer of reaming, according to bottom reaming, interlayer reaming, top layer's reaming order point
Reaming is carried out three times；
After reaming, borehole cleaning is carried out using small-bore deep hole pressure hole cleaner for step 3；
Step 4 assembles the anchor pole Anchoring part, by the six roots of sensation anchor pole monomer of hexagonal arrangement with diagonal two for a component
Into three groups, it is connected respectively with three layers from Zhang Zisuo anchor heads by nut, note will be used between nut and connector and anchor pole monomer
It stitches glue and fills closely knit, and this anchor pole exposed junction length is made to be easily installed tensioning equipment more than 2m, restrict when being installed from Zhang Zisuo anchor heads
Rope or iron wire bundle voussoir, and damage from Zhang Zisuo anchor heads is caused to prevent disturbance, each layer from after installing Zhang Zisuo anchor heads,
Install grout pipe, be ensure bottom from Zhang Zisuo anchor heads be in the milk density, grout pipe should pass through bottom from Zhang Zisuo anchor heads 15~
20mm, and the anchor plate of tensioning is penetrated in advance；
Step 5 installs billet in orifice position, should so that center of circular hole is consistent with drill center in billet, then
It is lifted by crane using crane and this anchor pole is installed, should treat that this anchor pole hangs down to effectively being protected from Zhang Zisuo anchor heads position when promoting lifting
When directly above aperture, manually this anchor pole is slowly put into hole by arrangement for crane machinery relay and being aided with, when transferring this anchor pole, is treated
Each layer unlocks the rope or iron wire of binding after locally entering hole from the voussoir above Zhang Zisuo anchor heads, bottom hole portion is dropped down onto under this anchor pole
Behind position, this anchor pole is promoted to gripping orientation, to confirm from Zhang Zisuo anchor heads to behind reaming position, tightens anchor plate locking screw
Cap is secured in position, and after this anchor pole enters hole fixation, each layer should be adjusted by the pretensioned method of jack from Zhang Zisuo anchor heads and dam
The spacing at body reaming position so that voussoir is bonded completely with reaming position top edge；
Step 6, take individual layer from Zhang Zisuo anchor heads subrange be first in the milk post-stretching mode to the layer from from break adrift
Two anchor pole monomer of head and the layer carry out prestress application.
The step three includes following step：
Water pipe first, is stretched into bottom hole by step 1, is rinsed by great deal running water out of hole to outside hole, until returning
5~10min of the peace and quiet continuity of water；
Step 2 after hole flushing, then is carried out drilling complete opening and draws water and blown off using high-pressure blast, and carries out aperture
Protection, in case rainwater and sundries enter.
It, can when tensioning output reaches 8t and continues 1 minute in the step five during tensioning pre- using very heavy Top slice
Confirmation is bonded completely from Zhang Zisuo anchor heads with reaming wall, is unloaded oil pressure at this time, is locked corresponding nut, is respectively completed each layer and is opened certainly
The local modulation of self-locking anchor head and reaming wall.
The step 6 specifically includes following step：
Step 1: being first locally in the milk from Zhang Zisuo anchor heads to bottom, it is in the milk from bottom to bottom from above Zhang Zisuo anchor heads
1m altitude ranges after grouting material intensity close to after dam body consolidation concrete strength, carry out tensioning of this layer from Zhang Zisuo anchor heads, make
Effective prestress after tensioning should be not less than 700kN；
Step 2: to interlayer from the grouting of Zhang Zisuo anchor heads part to interlayer from 1m height model above Zhang Zisuo anchor heads
It encloses, after grouting material intensity close to after dam body consolidation concrete strength, tensioning of this layer from Zhang Zisuo anchor heads is carried out, after making tensioning
Effective prestress should be not less than 700kN；
Step 3: from Zhang Zisuo anchor heads, locally grouting to top layer from 1m altitude ranges above Zhang Zisuo anchor heads, is treated to top layer
Grouting material intensity carries out tensioning of this layer from Zhang Zisuo anchor heads close to after dam body consolidation concrete strength, makes effective after tensioning
Prestressing force should be not less than 700kN.
Compared with prior art, the beneficial effects of the invention are as follows：
Multilayer reaming auto-lock anchorage technology is to provide anchoring using mechanical snap and cohesive force in the present invention, and can be by mostly certainly
Zhang Zisuo anchor heads share anchor force, and the reliability of anchoring is high, there is higher use value；And compared with individual layer chambering self-locking anchor into
This is low, anchor force is big, floor space is small.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the plan view that concrete backfill is cheated in the present invention.
Fig. 3 is the A-A sectional views of Fig. 1.
Fig. 4 is the B-B sectional views of Fig. 1.
Fig. 5 is the C-C sectional views of Fig. 1.
Fig. 6 is the D-D sectional views of Fig. 1.
Fig. 7 is the 1-1 sectional views of Fig. 3.
Fig. 8 is the 2-2 sectional views of Fig. 7.
Fig. 9 is loading device schematic diagram.
In figure, anchor pole monomer 1, anchor rod body 2 lengthens anchor pole 3, connector 4, nut 5, from Zhang Zisuo anchor heads 6, grout pipe
7, to middle ring 8, counter-force anchor plate 9, anchor plate 10, billet 11, jack 12, steel sleeve 13, exhaust pipe 14, steel plate seat 15,
Drilling 16, anchor head seat 17.
Specific embodiment
Below in conjunction with description of the drawings, the present invention is described in further detail with specific embodiment.
Referring to Fig. 1 to Fig. 9, a kind of multilayer reaming self-locking prestressed anchor, can suitable for applying prestressing force to concrete dam
To be applied in concrete dam engineering；It includes anchor bar body, grout pipe 7, to middle ring 8.The anchor bar body is by six roots of sensation anchor pole
Monomer 1 is formed by equilateral hexagon, and the anchor pole monomer 1 is made of anchor rod body 2 and lengthening anchor pole 3；The anchor pole bar
2 rear end of body and lengthening anchor pole are connected between 3 front end by connector 4, and 2 front end of anchor rod body is closing taper.It is right
Two anchor pole monomers 1 at angle are connected to be formed three layers from opening with one by nut 5 from Zhang Zisuo anchor heads 6 respectively for one group
Self-locking anchor head 6；Hence this anchor pole divides from Zhang Zisuo anchor heads 6 for three layers according to three different depths, every layer of anchor pole includes should
Two anchor pole monomer 1 of layer and this layer corresponding one are from Zhang Zisuo anchor heads 6.To enable three layers to share anchoring equally from Zhang Zisuo anchor heads 6
Power, described three layers are equally spaced from Zhang Zisuo anchor heads 6.The grout pipe 7 extends to anchor pole bar from 3 rear end of anchor pole is lengthened
2 front end of body, through to middle ring 8 and from Zhang Zisuo anchor heads 6.
Referring to Fig. 1, described three layers from spacing is distributed at intervals of 3m up and down between Zhang Zisuo anchor heads 6.
Referring to Fig. 1, the anchor pole monomer 1 is made by fining twisted steel.
Referring to Fig. 1 to Fig. 9, a kind of installation method of multilayer reaming self-locking prestressed anchor comprises the following steps：
Step 1 is needing to apply prestressed structure drill straight hole using engineering investigation drilling machine, which applies prestressing force knot
Elongated structure is dam body；16 depth of drilling and verticality are checked with laser ranging inclinometer after pore-forming, it is desirable that pore-forming
16 perpendicularity deviation of drilling be less than 5 ‰.And confirm that the concrete core sample of bottom hole 8m depth scopes is closely knit by coring during pore-forming, if
Leakiness then needs to deepen 16 depth of drilling, it is ensured that the quality for anchoring section concrete meets design requirement；It is basis herein《Concrete
Structural Engineering job specfication》(GB 50666-2011) judges that whether no concrete core sample is closely knit on closely knit regulation, if sentencing
Breaking then needs to deepen for leakiness.
Step 2 after 16 construction of drilling, expands the bottom hole of drilling 16 in step 1 with the reaming bit of specialty
Hole, reaming hole shape are inverted cone surface, reaming bit are made once to expand one layer of reaming, according to bottom reaming, interlayer reaming, top layer
Reaming order carries out reaming in three times.
After reaming, borehole cleaning is carried out using special small-bore deep hole pressure hole cleaner for step 3.
Step 4 assembles the anchor pole Anchoring part, by the six roots of sensation anchor pole monomer 1 of hexagonal arrangement with diagonal two for a component
Into three groups, it is connected respectively with three layers from Zhang Zisuo anchor heads 6 by nut 5；Anchor pole Anchoring part herein refers to that the anchor pole carries
For anchor force part, i.e. anchor pole and grouting material contact portion.It will be filled between nut 5 and connector 4 and anchor pole monomer 1 with note seam glue
Closely knit, to prevent this rockbolt installation when loosens.And this anchor pole exposed junction length is made to be easily installed tensioning equipment more than 2m, herein
Anchor pole exposed junction refers to this anchor pole away from bottom hole one end, i.e., the part that this anchor pole bassets.It is opened certainly from break adrift during because of installation
First 6 oblique extension is caught in reaming, then selects voussoir fixation from Zhang Zisuo anchor heads 6；It restricts when therefore being installed from Zhang Zisuo anchor heads 6
Rope or iron wire bundle voussoir, and the damage from Zhang Zisuo anchor heads 6 is caused to prevent disturbance.Each layer is installed from Zhang Zisuo anchor heads 6
Afterwards, grout pipe 7 is installed；To ensure bottom from the grouting density of Zhang Zisuo anchor heads 6, grout pipe 7 should pass through bottom to be opened certainly from break adrift
15~20mm of first 6 length；Bottom herein from Zhang Zisuo anchor heads 6 refer to three layers from Zhang Zisuo anchor heads 6 most bottom it is next from
Zhang Zisuo anchor heads 6, as nearest from bottom hole one from Zhang Zisuo anchor heads 6.And the anchor plate 10 of tensioning is penetrated in advance, to make
It is secured in position and is used after perforating for anchor pole monomer 1.
Step 5 installs billet 11 in orifice position, should cause center of circular hole and 16 centers one of drilling in billet 11
It causes.It is lifted by crane using crane and this anchor pole is installed, i.e., lifted this anchor pole in the hole being drilled in step 1 with crane；Promote lifting
When should be to effectively being protected from 6 position of Zhang Zisuo anchor heads.When this anchor pole is above aperture, by arrangement for crane machinery relay
And be aided with and be manually slowly put into this anchor pole in hole, when transferring this anchor pole, treat that voussoir of each layer from above Zhang Zisuo anchor heads 6 is local
Enter to unlock behind hole the rope or iron wire of binding.After bottom hole position is dropped down onto under this anchor pole, this anchor pole is promoted to gripping orientation,
To confirm from Zhang Zisuo anchor heads 6 to behind reaming position, 10 lock nut 5 of anchor plate is tightened, is secured in position.This anchor pole enters Kong Gu
After fixed, spacing of each layer from Zhang Zisuo anchor heads 6 Yu dam body reaming position should be adjusted by 12 pretensioned method of jack so that
Voussoir is bonded completely with reaming position top edge.
Step 6 to give full play to reaming from the anchoring effect of Zhang Zisuo anchor heads 6, takes individual layer from 6 innings of Zhang Zisuo anchor heads
Scope be first in the milk mode of post-stretching in portion's carries out prestress application.
Specifically, the step three includes following step：Water pipe first, is stretched into bottom hole, by big by step 1
Flow current are rinsed out of hole to outside hole, until 5~10min of the peace and quiet continuity of return water.Step 2, after hole flushing, then it is right
Drilling is carried out complete opening and draws water and blown off using high-pressure blast, and carries out aperture protection, in case rainwater and sundries enter.
Specifically, when being layered pre- tensioning using jack 12 in the step five, when tensioning output reaches 8t and continues 1
During minute, it can confirm from Zhang Zisuo anchor heads 6 and be bonded completely with reaming wall, unload oil pressure at this time, lock corresponding nut 5, respectively
Each layer is completed from the local modulation of Zhang Zisuo anchor heads 6 and reaming wall.
Specifically, the step 6 specifically includes following step：It is Step 1: first local from Zhang Zisuo anchor heads 6 to bottom
Grouting, is in the milk to bottom from 1m altitude ranges above Zhang Zisuo anchor heads 6 from bottom, treats grouting material intensity close to dam body consolidation coagulation
After native intensity, tensioning of this layer from Zhang Zisuo anchor heads 6 is carried out, makes the effective prestress after tensioning that should be not less than 700kN；Step
2nd, it is in the milk to interlayer from Zhang Zisuo anchor heads 6 are local to interlayer from 1m altitude ranges above Zhang Zisuo anchor heads 6, treats grouting material
Intensity carries out tensioning of this layer from Zhang Zisuo anchor heads 6, makes the effective prestress after tensioning close to after dam body consolidation concrete strength
700kN should be not less than；Step 3: to top layer from the local grouting of Zhang Zisuo anchor heads 6 to top layer from 1m height above Zhang Zisuo anchor heads 6
Scope after grouting material intensity close to after dam body consolidation concrete strength, carries out tensioning of this layer from Zhang Zisuo anchor heads 6, makes tensioning
Effective prestress afterwards should be not less than 700kN.Meanwhile in order to accelerate construction progress, will not generally grouting materials be waited to be fully cured again
Tensioning can proceed by tensioning of each layer from Zhang Zisuo anchor heads 6 after grouting material intensity reaches tensioning requirement.Usually scene
A certain number of die trials can be made during grouting, to ensure the curing temperature uniformity of die trial intensity and body intensity of being in the milk in hole, are filled
Temperature in borehole is tested before slurry, test is found, temperature in borehole is basically identical with outdoor temperature；Therefore, die trial is carried out
Normal maintenance under outdoor temperature, while by different number of days（2~4 days）Carry out the test of intensity of test block.And individual layer is opened certainly certainly
Before first 6 tensioning of break adrift, every layer of theoretic elongation from Zhang Zisuo anchor heads 6 He two anchor pole monomer 1 of this layer should be calculated；Remember during tensioning
Deflection when record is per level-one load stretch value and voltage stabilizing, and compared with theoretic elongation, if actual measurement stretch value is more than
Calculated value 10% or less than 5%, should ascertain the reason and be correspondingly processed.In stretching process, rise that lotus rate is per minute to surpass
The 1/10 of design stress is crossed, voltage stabilizing 5min can carry out next stage tensioning after every level-one control force is reached, up to afterbody
After drawing, voltage stabilizing 10min, that is, lockable.
Referring to Fig. 1 to Fig. 9, it is of the invention from Zhang Zisuo anchor heads 6 install when can from open with reaming generate mechanical snap, adopt
Anchor force is provided from 6 reaming of Zhang Zisuo anchor heads formation mechanical snap and the bonding of grouting material with three layers, this rockbolt installation is applied
After Prestressing, the whole grouting of free tensioning section can be formed and bonded, meet current dam prestressing force tonnage height, limit anchoring force
Big engine request.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
On the premise of not departing from present inventive concept, several simple deduction or replace can also be made, said structure should be all considered as belonging to
Protection scope of the present invention.
Claims (4)
1. a kind of installation method of multilayer reaming self-locking prestressed anchor, including anchor bar body, grout pipe（7）, to middle ring（8）, institute
The anchor bar body stated is by six roots of sensation anchor pole monomer（1）It is formed by equilateral hexagon, the anchor pole monomer（1）By anchor rod body（2）With
Lengthen anchor pole（3）Composition, the anchor rod body（2）Rear end and lengthening anchor pole（3）Pass through connector between front end（4）It is connected
It connects, the anchor rod body（2）Front end is to close taper, two diagonal anchor pole monomers（1）Pass through nut respectively for one group（5）
With one from Zhang Zisuo anchor heads（6）It is connected to be formed three layers from Zhang Zisuo anchor heads（6）, described three layers from Zhang Zisuo anchor heads
（6）It is equally spaced, the grout pipe（7）From lengthening anchor pole（3）Rear end extends to anchor rod body（2）Front end, described three
Layer is from Zhang Zisuo anchor heads（6）Between up and down distribution spacing at intervals of 3m, the anchor pole monomer（1）By fining twisted steel making
Into being characterized in that, comprise the following steps：
Step 1 using engineering investigation drilling machine drill straight hole, uses laser ranging inclinometer to drilling after pore-forming（16）Depth and vertical
Degree is checked, it is desirable that the drilling of pore-forming（16）Perpendicularity deviation is less than 5 ‰, and confirms bottom hole 8m depth models by coring during pore-forming
The concrete core sample enclosed is closely knit, needs to deepen to drill if leakiness（16）Depth, it is ensured that the quality satisfaction for anchoring section concrete is set
Meter requirement；
Step 2, drilling（16）After construction, with reaming bit to drilling in step 1（16）Bottom hole carry out reaming, reaming
Hole shape is inverted cone surface, and reaming bit is made once to expand one layer of reaming, according to bottom reaming, interlayer reaming, top layer's reaming time
Sequence carries out reaming in three times；
After reaming, borehole cleaning is carried out using small-bore deep hole pressure hole cleaner for step 3；
Step 4 assembles the anchor pole Anchoring part, by the six roots of sensation anchor pole monomer of hexagonal arrangement（1）It is divided into diagonal two for one group
Three groups, respectively with three layers from Zhang Zisuo anchor heads（6）Pass through nut（5）It is connected, by nut（5）And connector（4）With anchor pole list
Body（1）Between with note seam glue fill closely knit, and this anchor pole exposed junction length is made to be easily installed tensioning equipment more than 2m, from opening from break adrift
Head（6）Voussoir is bundled with rope or iron wire during installation, is caused to prevent disturbance from Zhang Zisuo anchor heads（6）Damage, each layer from
Self-locking anchor head（6）After installing, grout pipe is installed（7）, to ensure bottom from Zhang Zisuo anchor heads（6）Grouting density, grouting
Pipe（7）Bottom should be passed through from Zhang Zisuo anchor heads（6）15~20mm, and the anchor plate of tensioning is penetrated in advance（10）；
Step 5 installs billet in orifice position（11）, should cause billet（11）Interior center of circular hole and drilling（16）Center
Unanimously, then lifted by crane using crane and this anchor pole is installed, tackled when promoting lifting from Zhang Zisuo anchor heads（6）Position carries out effectively anti-
This anchor pole when this anchor pole is above aperture, is manually slowly put into hole by shield by arrangement for crane machinery relay and being aided with, under
When putting this anchor pole, treat each layer from Zhang Zisuo anchor heads（6）The voussoir of top locally enters to unlock behind hole the rope or iron wire of binding, at this
After bottom hole position is dropped down onto under anchor pole, this anchor pole is promoted to gripping orientation, to confirm from Zhang Zisuo anchor heads（6）To reaming position
Afterwards, anchor plate is tightened（10）Lock nut（5）, it is secured in position, after this anchor pole enters hole fixation, jack should be passed through（12）Pre- tensioning
Method adjust each layer from Zhang Zisuo anchor heads（6）With the spacing at dam body reaming position so that voussoir and reaming position top edge are complete
Full fitting；
Step 6 takes individual layer from Zhang Zisuo anchor heads（6）Subrange be first in the milk post-stretching mode to the layer from from break adrift
Head（6）With two anchor pole monomer of the layer（1）Carry out prestress application.
2. the installation method of a kind of multilayer reaming self-locking prestressed anchor according to claim 1, which is characterized in that described
The step of three include following step：
Water pipe first, is stretched into bottom hole by step 1, is rinsed by great deal running water out of hole to outside hole, until return water is clear
It is net to continue 5~10min；
Step 2 after hole flushing, then is carried out drilling complete opening and draws water and blown off using high-pressure blast, and carries out aperture guarantor
Shield, in case rainwater and sundries enter.
3. the installation method of a kind of multilayer reaming self-locking prestressed anchor according to claim 1, which is characterized in that described
The step of five in use jack（12）When being layered pre- tensioning, when tensioning output reaches 8t and continues 1 minute, it can confirm and open certainly
Self-locking anchor head（6）It is bonded completely with reaming wall, unloads oil pressure at this time, lock corresponding nut（5）, it is respectively completed each layer and opens certainly certainly
Break adrift head（6）With the local modulation of reaming wall.
4. the installation method of a kind of multilayer reaming self-locking prestressed anchor according to claim 1, which is characterized in that described
Step 6 specifically includes following step：
Step 1: first to bottom from Zhang Zisuo anchor heads（6）Local grouting is in the milk from bottom to bottom from Zhang Zisuo anchor heads（6）On
Square 1m altitude ranges after grouting material intensity close to after dam body consolidation concrete strength, carry out the layer from Zhang Zisuo anchor heads（6）
It draws, makes the effective prestress after tensioning that should be not less than 700kN；
Step 2: to interlayer from Zhang Zisuo anchor heads（6）Local grouting is to interlayer from Zhang Zisuo anchor heads（6）Top 1m height models
It encloses, after grouting material intensity close to after dam body consolidation concrete strength, carries out the layer from Zhang Zisuo anchor heads（6）Tensioning, make tensioning
Effective prestress afterwards should be not less than 700kN；
Step 3: to top layer from Zhang Zisuo anchor heads（6）Local grouting is to top layer from Zhang Zisuo anchor heads（6）Top 1m altitude ranges,
After grouting material intensity close to after dam body consolidation concrete strength, the layer is carried out from Zhang Zisuo anchor heads（6）Tensioning, after making tensioning
Effective prestress should be not less than 700kN.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127058A (en) * | 1993-11-05 | 1995-05-16 | Sumitomo Electric Ind Ltd | Construction method for upward anchor and its anchor |
| CN1456790A (en) * | 2003-06-06 | 2003-11-19 | 中国科学院武汉岩土力学研究所 | Prestressed anchor pin with sand solidified inner head and its anchoring method |
| CN2878511Y (en) * | 2006-04-19 | 2007-03-14 | 重庆大学 | Tensile compression combined self-anchored rock anchor rod |
| CN101509253A (en) * | 2009-03-17 | 2009-08-19 | 武汉武大巨成加固实业有限公司 | Block-wedge-type self-locking inner anchor head |
| CN104790393A (en) * | 2015-04-23 | 2015-07-22 | 万军利 | Double-anchoring-section prestress anchor cable structure and constructing method thereof |
| CN205975517U (en) * | 2016-08-30 | 2017-02-22 | 武大巨成结构股份有限公司 | Multilayer reaming auto -lock prestressed anchorage pole |
-
2016
- 2016-08-30 CN CN201610768558.3A patent/CN106223267B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127058A (en) * | 1993-11-05 | 1995-05-16 | Sumitomo Electric Ind Ltd | Construction method for upward anchor and its anchor |
| CN1456790A (en) * | 2003-06-06 | 2003-11-19 | 中国科学院武汉岩土力学研究所 | Prestressed anchor pin with sand solidified inner head and its anchoring method |
| CN2878511Y (en) * | 2006-04-19 | 2007-03-14 | 重庆大学 | Tensile compression combined self-anchored rock anchor rod |
| CN101509253A (en) * | 2009-03-17 | 2009-08-19 | 武汉武大巨成加固实业有限公司 | Block-wedge-type self-locking inner anchor head |
| CN104790393A (en) * | 2015-04-23 | 2015-07-22 | 万军利 | Double-anchoring-section prestress anchor cable structure and constructing method thereof |
| CN205975517U (en) * | 2016-08-30 | 2017-02-22 | 武大巨成结构股份有限公司 | Multilayer reaming auto -lock prestressed anchorage pole |
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| CN106223267A (en) | 2016-12-14 |
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Address after: No. 4, Wuda Science and Technology Park Road, Donghu Development Zone, Wuhan City, Hubei Province, 430223 Patentee after: Wuhan Jucheng Structure Group Co.,Ltd. Address before: No. 4, Wuda Science and Technology Park Road, Donghu Development Zone, Wuhan City, Hubei Province, 430223 Patentee before: WUDA JUCHENG STRUCTURE Co.,Ltd. |