CN107338817A - Crab-bolt dismounting structure and replacing construction method in a kind of prestressed bolt basis - Google Patents
Crab-bolt dismounting structure and replacing construction method in a kind of prestressed bolt basis Download PDFInfo
- Publication number
- CN107338817A CN107338817A CN201710713456.6A CN201710713456A CN107338817A CN 107338817 A CN107338817 A CN 107338817A CN 201710713456 A CN201710713456 A CN 201710713456A CN 107338817 A CN107338817 A CN 107338817A
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- Prior art keywords
- bolt
- crab
- power transmission
- nut
- fracture
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
Abstract
The invention discloses the crab-bolt dismounting structure in a kind of prestressed bolt basis and change construction method, the dismounting structure includes the first dismounting structure removed to unbroken crab-bolt and the second dismounting structure removed to fracture crab-bolt, and the first dismounting structure includes the first power transmission nut, the first plane needle roller thrust bearing and the first lock piece being sleeved on successively in unbroken crab-bolt；Second dismounting structure includes power transmission muscle, and part of the power transmission muscle leakage on upper anchor slab is set with the second power transmission nut, the second plane needle roller thrust bearing and the second lock piece successively；The construction method includes step：First, crab-bolt pulling force in prestressed bolt basis is obtained；2nd, judge whether crab-bolt is broken in prestressed bolt basis；3rd, it is broken the dismounting of crab-bolt；4th, the dismounting of unbroken crab-bolt；5th, hole is cleared up；6th, crab-bolt is more renewed；7th, the tensioning of new crab-bolt.The present invention rapidly and efficiently changes crab-bolt on the premise of prestressed bolt basis top equipment is not removed, and reduces construction space.
Description
Technical field
The invention belongs to crab-bolt to change technical field, and in particular to the crab-bolt dismounting structure in a kind of prestressed bolt basis
And change construction method.
Background technology
Prestressed bolt as straight-line prestressed muscle, because without it is cold drawn with welding, it is easy for construction, quick, be widely used in
Continuous beam, large-scale frame structure, highway or the big mid-span of railway in large hydraulic engineering, wind energy project, industry and civil buildings
The engineerings such as bridge, nuclear power station and earth anchor.It has connection, anchoring simplicity, and adhesion strength is strong, and stretch-draw anchor is safe and reliable, construction party
Just the advantages that, and reinforcing bar is saved, reduce component area and weight.But the reinforcing bar manufacturing process and technical standard due to China
Have there are portion fractures, very big safety are caused to enterprise operation in difference, the existing prestressed bolt being used of Some Enterprises
Hidden danger and very big economic loss.Therefore, nowadays lack and a kind of do not removing the premise of prestressed bolt basis top equipment
Under, the prestressed bolt basis of crab-bolt is taken out directly in original concrete foundation with crab-bolt dismounting structure and changes construction party
Method, ground footprint is small, and place is easy to arrangement, project progress is fast, disturbing factor is few, is advantageous to civilized construction, can ensure that week
Enclose it is existing that facilities are as good as new is lossless, it is green, safe and reliable.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that provide a kind of prestressed anchor
Crab-bolt dismounting structure in bolt basis, it is novel in design rationally, on the premise of prestressed bolt basis top equipment is not removed,
Crab-bolt is directly rapidly and efficiently changed in original concrete foundation, short time limit, low cost, efficient energy-saving, green, safety can
Lean on, be easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of crab-bolt in prestressed bolt basis
Dismounting structure, it is characterised in that：Torn open including the first dismounting structure removed to unbroken crab-bolt and to fracture crab-bolt
The second dismounting structure removed, first dismounting structure are arranged on the top of upper anchor slab, and first dismounting structure is included successively
The first power transmission nut, the first plane needle roller thrust bearing and the first lock piece being sleeved in unbroken crab-bolt；Described second tears open
Pass through sleeve and fracture anchor except structure includes stretching in sleeve pipe through upper anchor slab for the power transmission muscle of fracture crab-bolt power transmission, power transmission muscle
Bolt coordinates, and part of the power transmission muscle leakage above upper anchor slab is set with the second power transmission nut, the second plane needle roller thrust axle successively
Hold with the second lock piece, be provided with spanner on the first power transmission nut and on the second power transmission nut, be broken crab-bolt
Fracture end is provided with fracture linkage section, and one end that power transmission muscle is stretched in sleeve pipe is provided with power transmission connection section, the fracture connection
The physical dimension all same of section and the power transmission connection section.
Crab-bolt dismounting structure in a kind of above-mentioned prestressed bolt basis, it is characterised in that：It is described fracture linkage section and
The power transmission connection Duan Jun is processed as six prism structures by electric discharge machine, and sleeve set is in the fracture linkage section and the biography
On power linkage section.
Crab-bolt dismounting structure in a kind of above-mentioned prestressed bolt basis, it is characterised in that：First lock piece and
Second lock piece is lock-nut.
Crab-bolt dismounting structure in a kind of above-mentioned prestressed bolt basis, it is characterised in that：The first power transmission nut
The stress nut one being set in including two priorities in unbroken crab-bolt, the second power transmission nut are set in including two priorities
Stress nut two on power transmission muscle, stress nut one and the physical dimension all same of stress nut two.
Crab-bolt dismounting structure in a kind of above-mentioned prestressed bolt basis, it is characterised in that：The quantity of the spanner with
The quantity of stress nut one or stress nut two is equal, and the spanner is corresponding with stress nut one or stress nut 211.
Crab-bolt dismounting structure in a kind of above-mentioned prestressed bolt basis, it is characterised in that：The spanner is pulled for hydraulic pressure
Hand.
Meanwhile the invention also discloses a kind of method and step is simple, construction is reasonable, can not remove prestressed bolt basis
Safely removed on the premise of the equipment of top crab-bolt crab-bolt change construction method, it is characterised in that the construction method include with
Lower step：
Step 1: obtain crab-bolt pulling force in prestressed bolt basis：Prestressed bolt is detected using crab-bolt pull force calculation instrument
Crab-bolt pulling force in basis, check crab-bolt working condition in prestressed bolt basis；
Step 2: judge whether crab-bolt is broken in prestressed bolt basis：According in crab-bolt pull force calculation instrument in step 1
Testing result judges whether crab-bolt is broken in prestressed bolt basis, is drawn if detecting crab-bolt pulling force in crab-bolt pull force calculation instrument and being less than
During pull out force threshold value, crab-bolt is broken in prestressed bolt basis, performs step 3；If crab-bolt pulling force is detected in crab-bolt pull force calculation instrument
During not less than drawing force threshold, crab-bolt is unbroken in prestressed bolt basis, performs step 4；
Step 3: the dismounting of fracture crab-bolt, detailed process are as follows：
Step 301, the fracture depth for determining fracture crab-bolt simultaneously remove the discarded crab-bolt reinforcing bar in fracture crab-bolt top：Utilize shooting
Image in sleeve pipe corresponding to head observation fracture crab-bolt, the fracture depth of fracture crab-bolt is measured using steel ruler；Then, crab-bolt will be broken
The discarded crab-bolt reinforcing bar on top is extracted out out of sleeve pipe, in the discarded crab-bolt reinforcing bar and fracture crab-bolt composition prestressed bolt basis
A complete crab-bolt；
Step 302, remove sleeve pipe：Sleeve pipe corresponding to crab-bolt is broken in dismantling step 301；
Step 303, choose sleeve and process fracture linkage section：The model of sleeve, then, root are determined according to the diameter of sleeve pipe
According to the model of sleeve to determining that the fracture crab-bolt of fracture depth carries out fracture linkage section processing using electric discharge machine in step 301,
Sleeve is hollow structure and is the sleeve of six sides in cylindrical, and the fracture linkage section is six prism structures；
Step 304, connection power transmission muscle：One end of advance power transmission muscle is processed according to the model of sleeve, forms power transmission
The power transmission connection section of muscle, sleeve connection is connected the power transmission connection section of power transmission muscle through upper anchor slab after described be broken on linkage section
It is connected in sleeve, six prism structures that the power transmission connection Duan Weiyu sleeves coordinate；
Step 305, remove fracture crab-bolt：First, part of the power transmission muscle leakage above upper anchor slab is set with step 304
Second power transmission nut, the second power transmission nut include the stress nut two that two priorities are set on power transmission muscle, wherein, it is screwed into
Reverse one spanner of installation in the direction being screwed into after first stress nut two along first stress nut two, then be screwed into second by
Power nut two, it is screwed into the direction being screwed into after second stress nut two along second stress nut two and reversely installs one again and pull
Hand；Then, the second plane needle roller thrust bearing and the second lock piece are successively installed on second stress nut two；Finally, instead
Twist the spanner installed on first stress nut two, locked first stress nut two, then second stress nut two of unscrewed
The spanner of upper installation, locked second stress nut two, two spanner alternations successively, until crab-bolt will be broken from lower anchor slab
On produce, and will be broken crab-bolt from sleeve pipe where hole in extract out；
Step 4: the dismounting of unbroken crab-bolt, detailed process are as follows：
The pressure release of step 401, unbroken crab-bolt：By the complete pressure release in top of unbroken crab-bolt to be replaced；
Step 402, remove unbroken crab-bolt：First, unbroken crab-bolt leaks outside the portion above upper anchor slab in step 401
Divide suit the first power transmission nut, the first power transmission nut includes the stress nut that two priorities are set in unbroken crab-bolt
One, wherein, it is screwed into the direction being screwed into after first stress nut one along first stress nut one and one spanner is reversely installed, then
Second stress nut one is screwed into, it is reverse again to be screwed into the direction being screwed into after second stress nut one along second stress nut one
One spanner is installed；Then, the first plane needle roller thrust bearing and the first locking are successively installed on second stress nut one
Part；Finally, the spanner installed on first stress nut one of unscrewed, locked first stress nut one, then unscrewed second
The spanner installed on stress nut one, locked second stress nut one, two spanner alternations successively, until will be unbroken
Crab-bolt is produced from lower anchor slab, and unbroken crab-bolt is extracted out from corresponding sleeve pipe；
Step 403, remove sleeve pipe：Sleeve pipe corresponding to unbroken crab-bolt in dismantling step 402；
Step 5: cleaning hole：Situation in hole is checked corresponding to sleeve pipe using camera, and hole is suctioned out using dust catcher
Interior residue；
Step 6: more renew crab-bolt：New crab-bolt is installed using spanner, new crab-bolt decentralization is taken out with unbroken crab-bolt
Go out process on the contrary, new crab-bolt is securedly mounted on T-steel by new crab-bolt after reaching former absolute altitude using nut；
Step 7: the tensioning of new crab-bolt：Tensioning is carried out to mounted new screw rod and is stretched to setting value.
Above-mentioned construction method, it is characterised in that：The spanner is hydraulic spanner, first lock piece and the second locking
Part is lock-nut.
The present invention has advantages below compared with prior art：
1st, the crab-bolt dismounting structure that the present invention uses, by setting power transmission muscle and sleeve cooperation to consolidate fracture crab-bolt
It is fixed, power transmission muscle by being stretched to through upper anchor slab in sleeve pipe, by by the second power transmission nut, the second plane needle roller thrust bearing and
Second lock piece is sleeved on part of the power transmission muscle leakage above upper anchor slab and fracture crab-bolt is removed, wherein, to being broken anchor
Polished at the top of bolt, one end of power transmission muscle and sleeve pipe connection is polished, and keep top and the power transmission of fracture crab-bolt
Muscle abrasive end physical dimension is consistent, and the effect that is connected is good, carries out operation to the second power transmission nut using spanner and removes fracture anchor
Bolt, it is short time limit, low cost, efficient energy-saving, green, it is easy to promote the use of.
2nd, the crab-bolt dismounting structure that uses of the present invention, by by the first power transmission nut, the first plane needle roller thrust bearing and
First lock piece is directly sleeved on part of the unbroken crab-bolt leakage above upper anchor slab and fracture crab-bolt is removed, using pulling
Hand carries out operation to the first power transmission nut and removes unbroken crab-bolt, directly rapidly and efficiently changes anchor in original concrete foundation
Bolt, reliable and stable, using effect is good.
3rd, the crab-bolt dismounting structure that the present invention uses, when being removed to fracture crab-bolt or unbroken crab-bolt, plane is utilized
Needle roller thrust bearing can make lock piece not produce slip because of the rotation of bottom power transmission nut, so that power transmission nut and whole
Crab-bolt forms an entirety so that in the thrust of spanner to crab-bolt, is easy to invert crab-bolt and takes out, avoid using large scale computer
Tool equipment, vibration, noise, dust are obtained reducing to greatest extent.
4th, the construction method that the crab-bolt that the present invention uses is changed, step is simple, and engineering equipment is carried out by changing crab-bolt
Anchoring, detect whether crab-bolt in prestressed bolt basis is broken using crab-bolt pull force calculation instrument, it is actual according to crab-bolt pull force calculation
Whether the pulling force parameter that instrument is shown is less than drawing force threshold, when detecting crab-bolt fracture, removes fracture crab-bolt top and discards crab-bolt
Reinforcing bar, sleeve pipe, processing fracture linkage section, connect power transmission muscle, remove fracture crab-bolt, and stable connection is fast and reliable；When detection crab-bolt
When unbroken, unbroken crab-bolt is directly removed, rapidly and efficiently, is easy to promote the use of.
In summary, the present invention is novel in design rationally, on the premise of prestressed bolt basis top equipment is not removed, directly
It is connected in original concrete foundation and rapidly and efficiently changes crab-bolt, short time limit, low cost, efficient energy-saving, green, safety can
Lean on, be easy to promote the use of, be easy to promote the use of.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation for the crab-bolt dismounting structure that the present invention uses.
Fig. 2 shows to remove the structure after the second power transmission nut, the second plane needle roller thrust bearing and the second lock piece in Fig. 1
It is intended to.
Fig. 3 is the FB(flow block) of construction method of the present invention.
Description of reference numerals:
1-T-steel；2-the first fixing nut；3-lower anchor slab；
4-the second fixing nut；5-unbroken crab-bolt；6-sleeve pipe；
7-concrete column；8-go up anchor slab；9-1-stress nut one；
9-2-stress nut two；The plane needle roller thrust bearings of 10-1-first；
The plane needle roller thrust bearings of 10-2-second；The lock pieces of 11-1-first；
The lock pieces of 11-2-second；12-fracture crab-bolt；
13-sleeve；14-power transmission muscle.
Embodiment
The crab-bolt dismounting structure in a kind of prestressed bolt basis as depicted in figs. 1 and 2, including to unbroken crab-bolt 5
The first dismounting structure removed and the second dismounting structure removed to fracture crab-bolt 12, the first dismounting structure peace
Mounted in the top of upper anchor slab 8, first dismounting structure include being sleeved on successively the first power transmission nut in unbroken crab-bolt 5,
First plane needle roller thrust bearing 10-1 and the first lock piece 11-1；Second dismounting structure includes stretching into through upper anchor slab 8
It is the power transmission muscle 14 of the fracture power transmission of crab-bolt 12 in sleeve pipe 6, power transmission muscle 14 is coordinated by sleeve 13 and fracture crab-bolt 12, power transmission muscle
14 parts of the leakage above upper anchor slab 8 are set with the second power transmission nut, the second plane needle roller thrust bearing 10-2 and the successively
Two lock piece 11-2, spanner is provided with the first power transmission nut and on the second power transmission nut, fracture crab-bolt 12
Fracture end is provided with fracture linkage section, and one end that power transmission muscle 14 is stretched in sleeve pipe 6 is provided with power transmission connection section, and the fracture connects
Connect the physical dimension all same of section and the power transmission connection section.
It should be noted that with the continuous renewal of engineering equipment, continuous renewal corresponding to the installation foundation of engineering equipment,
In actual use, the engineering equipment includes blower fan tower barrel, and the installation foundation of blower fan tower barrel is blower foundation, the blower foundation
Using prestressed bolt basis, because the increasing of blower fan weight, blower fan tower barrel are high caused by the increase of blower fan unit installed capacity
Degree increase and lengthened vanes, the increase of blower foundation stress is thus caused, due to being currently used in blower fan tower barrel and blower foundation
There is material without corresponding Regulations in the crab-bolt of connection, repeatedly occur crab-bolt breakage problem, therefore first dismounting structure
The purpose of setting is that unbroken crab-bolt 5 is removed, and all to change the new crab-bolt of the more excellent material of performance, described second tears open
Except the purpose of structure setting is removed to fracture crab-bolt 12, fan operation is avoided to cause very big potential safety hazard and great
Economic loss.
In actual use, crab-bolt bottom passes through lower anchor slab 3 in prestressed bolt basis, in prestressed bolt basis crab-bolt with
Crab-bolt is fixed on lower anchor slab 3 by the opening position that lower anchor slab 3 connects using the first fixing nut 2 and the second fixing nut 4, in advance should
Pass through upper anchor slab 8 in power crab-bolt basis at the top of crab-bolt, the opening position that crab-bolt is connected with upper anchor slab 8 in prestressed bolt basis is similarly
Crab-bolt is fixed on upper anchor slab 8 using fixing nut, then, the concrete column of hollow structure is formed using concreting
7；When crab-bolt is unbroken in prestressed bolt basis, the crab-bolt in prestressed bolt basis corresponds to unbroken crab-bolt 5, removes
Fixing nut, it is set with the first power transmission nut, the rolling of the first plane thrust successively in the unbroken crab-bolt 5 above upper anchor slab 8
Needle bearing 10-1 and the first lock piece 11-1, the setting of the first power transmission nut are in order to coordinate spanner to rotate unbroken crab-bolt 5 the
One plane needle roller thrust bearing 10-1 setting is in order that the first lock piece 11-1 will not turn because of the first power transmission of bottom nut
Movable property life is slided, so that the first power transmission nut forms an entirety with whole unbroken crab-bolt 5 so that the thrust of spanner
Onto unbroken crab-bolt 5, it is easy to unbroken crab-bolt 5 inverting taking-up；
When crab-bolt is broken in prestressed bolt basis, the crab-bolt in prestressed bolt basis corresponds to be broken crab-bolt 12,
The part crab-bolt that fracture crab-bolt 12 top is broken is taken out after removing fixing nut, the fracture end of fracture crab-bolt 12 is provided with fracture and connected
The purpose for connecing section is easy for coordinating with sleeve pipe 6, and one end that power transmission muscle 14 is stretched in sleeve pipe 6 is provided with the purpose of power transmission connection section
It is easy for coordinating with sleeve pipe 6, the physical dimension all same purpose of the fracture linkage section and the power transmission connection section is easy for letter
Change the structure of sleeve pipe 6, the fracture end and the power transmission connection section of the connection fracture crab-bolt 12 of sleeve pipe 6, be easy to power transmission muscle 14 to pass through set
Pipe 6 connects as one with fracture crab-bolt 12, wherein, power transmission muscle 14 stretches out upper anchor slab 8, in the power transmission muscle above upper anchor slab 8
The second power transmission nut, the second plane needle roller thrust bearing 10-2 and the second lock piece 11-2, the second power transmission are set with 14 successively
The setting of nut is to coordinate the assembly that spanner rotates power transmission muscle 14 and fracture crab-bolt 12 forms, the second plane needle roller thrust
Bearing 10-2 setting be in order that the second lock piece 11-2 will not because the second power transmission of bottom nut rotation produce slip, so as to
Make the combination bodily form of the second power transmission nut and power transmission muscle 14 and the fracture composition of crab-bolt 12 into an entirety so that the thrust of spanner is made
Use power transmission muscle 14 and be broken on the assembly that crab-bolt 12 forms, be easy to fracture crab-bolt 12 inverting taking-up.
In the present embodiment, the fracture linkage section and the power transmission connection Duan Jun are processed as six prism knots by electric discharge machine
Structure, sleeve 13 are sleeved in the fracture linkage section and the power transmission connection section.
It should be noted that the fracture linkage section and the power transmission connection Duan Jun are pre-machined as six by electric discharge machine
Prism structure, and the fracture linkage section is consistent with six prism structure sizes of the power transmission connection section, sleeve 13 is sleeved on institute
State in fracture linkage section and the power transmission connection section, accordingly, it is preferred that tube-in-tube structure of the sleeve 13 using cylindrical interior six sides.
In the present embodiment, the first lock piece 11-1 and the second lock piece 11-2 are lock-nut.
In the present embodiment, the first power transmission nut includes the stress nut that two priorities are set in unbroken crab-bolt 5
One 9-1, the second power transmission nut include the 9-2 of stress nut two that two priorities are set on power transmission muscle 14, stress nut one
9-1 and the 9-2 physical dimension all sames of stress nut two.
In the present embodiment, the quantity of the spanner is equal with the 9-1 of stress nut one or the 9-2 of stress nut two quantity, and
The spanner corresponds with the 9-1 of the stress nut one or 9-2 of stress nut two.
It should be noted that the first power transmission nut includes the stress nut one that two priorities are set in unbroken crab-bolt 5
9-1 and the spanner and the one-to-one purposes of the 9-1 of stress nut one are by the way that locked two stress of spanner cooperation are used alternatingly
The 9-1 of nut one, it is easy to the screwing out unbroken crab-bolt 5 of stabilization；Second power transmission nut is set in power transmission muscle 14 including two priorities
On the 9-2 of stress nut two and the spanner and the one-to-one purposes of the 9-2 of stress nut two be to be matched somebody with somebody by the way that spanner is used alternatingly
Locked two stress nuts two 9-2 is closed, is easy to the stable crab-bolt 12 that will be broken to screw out.
In the present embodiment, the spanner is hydraulic spanner.
In actual use, the hydraulic spanner uses specification for 13000Nm two sets of hollow hydraulic spanners or using specification
For 24000Nm two sets of high power hydraulic spanners.
The construction method that a kind of crab-bolt as shown in Figure 3 is changed, comprises the following steps：
Step 1: obtain crab-bolt pulling force in prestressed bolt basis：Prestressed bolt is detected using crab-bolt pull force calculation instrument
Crab-bolt pulling force in basis, check crab-bolt working condition in prestressed bolt basis；
Step 2: judge whether crab-bolt is broken in prestressed bolt basis：According in crab-bolt pull force calculation instrument in step 1
Testing result judges whether crab-bolt is broken in prestressed bolt basis, is drawn if detecting crab-bolt pulling force in crab-bolt pull force calculation instrument and being less than
During pull out force threshold value, crab-bolt is broken in prestressed bolt basis, performs step 3；If crab-bolt pulling force is detected in crab-bolt pull force calculation instrument
During not less than drawing force threshold, crab-bolt is unbroken in prestressed bolt basis, performs step 4；
Step 3: the dismounting of fracture crab-bolt, detailed process are as follows：
Step 301, the fracture depth for determining fracture crab-bolt simultaneously remove the discarded crab-bolt reinforcing bar in fracture crab-bolt top：Utilize shooting
Image in sleeve pipe 6 corresponding to head observation fracture crab-bolt 12, the fracture depth of fracture crab-bolt 12 is measured using steel ruler；Then, will be disconnected
The discarded crab-bolt reinforcing bar for splitting the top of crab-bolt 12 is extracted out out of sleeve pipe 6, and the discarded crab-bolt reinforcing bar and fracture crab-bolt 12 form pre- answer
A complete crab-bolt in power crab-bolt basis；
Step 302, remove sleeve pipe：Sleeve pipe 6 corresponding to crab-bolt 12 is broken in dismantling step 301；
It should be noted that because in casting concrete, isolating the sleeve pipe 6 of crab-bolt and concrete due to the pressure of concrete
And caused temperature can make sleeve pipe 6 produce contraction distortion during solidification, so hole inner sleeve 6 should be removed.
Step 303, choose sleeve and process fracture linkage section：The model of sleeve 13 is determined according to the diameter of sleeve pipe 6, so
Afterwards, according to the model of sleeve 13 to determining that the fracture crab-bolt 12 of fracture depth carries out fracture company using electric discharge machine in step 301
Section processing is connect, sleeve 13 is hollow structure and is the sleeve of six sides in cylindrical, and the fracture linkage section is six prism structures；
Step 304, connection power transmission muscle：One end of advance power transmission muscle 14 is processed according to the model of sleeve 13, formed
The power transmission connection section of power transmission muscle 14, the power transmission connection section of power transmission muscle 14 is worn after sleeve 13 is connected on the fracture linkage section
Cross anchor slab 8 to be connected in sleeve 13, six prism structures that the power transmission connection Duan Weiyu sleeves 13 coordinate；
Step 305, remove fracture crab-bolt：First, power transmission muscle 14 leaks outside the part above upper anchor slab 8 in step 304
The second power transmission nut is set with, the second power transmission nut includes the 9-2 of stress nut two that two priorities are set on power transmission muscle 14,
Wherein, being screwed into the direction being screwed into after first 9-2 of stress nut two along first 9-2 of stress nut two, reversely installation one is pulled
Hand, then second 9-2 of stress nut two is screwed into, twisted after being screwed into second 9-2 of stress nut two along second 9-2 of stress nut two
The direction entered is reversely installed by one spanner again；Then, the rolling of the second plane thrust is successively installed on second 9-2 of stress nut two
Needle bearing 10-2 and the second lock piece 11-2；Finally, the spanner installed on first 9-2 of stress nut two of unscrewed, locked first
The individual 9-2 of stress nut two, the spanner then installed on second 9-2 of stress nut two of unscrewed, locked second stress nut two
9-2, two spanner alternations successively, until fracture crab-bolt 12 is produced from lower anchor slab 3, and crab-bolt 12 will be broken from sleeve pipe
Extracted out in hole where 6；
Step 4: the dismounting of unbroken crab-bolt, detailed process are as follows：
The pressure release of step 401, unbroken crab-bolt：By the complete pressure release in top of unbroken crab-bolt 5 to be replaced；
Step 402, remove unbroken crab-bolt：First, unbroken crab-bolt 5 leaks outside above upper anchor slab 8 in step 401
Part the first power transmission nut of suit, the first power transmission nut include the stress spiral shell that two priorities are set in unbroken crab-bolt 5
One 9-1 of mother, wherein, reversely installed along first 9-1 of stress nut one directions being screwed into after being screwed into first 9-1 of stress nut one
One spanner, then be screwed into second 9-1 of stress nut one, it is screwed into after second 9-1 of stress nut one along second stress nut
The direction that one 9-1 is screwed into reversely is installed by one spanner again；Then, successively to install first on second 9-1 of stress nut one flat
Face needle roller thrust bearing 10-1 and the first lock piece 11-1；Finally, the spanner installed on first 9-1 of stress nut one of unscrewed,
Locked first stress nut one 9-1, the spanner then installed on second 9-1 of stress nut one of unscrewed, locked second by
The 9-1 of power nut one, two spanner alternations successively, until unbroken crab-bolt 5 is produced from lower anchor slab 3, and will be unbroken
Crab-bolt 5 is extracted out from corresponding sleeve pipe 6；
Step 403, remove sleeve pipe：Sleeve pipe 6 corresponding to unbroken crab-bolt 5 in dismantling step 402；
Step 5: cleaning hole：Situation in hole is checked corresponding to sleeve pipe 6 using camera, and is suctioned out using dust catcher
Residue in hole；
Step 6: more renew crab-bolt：New crab-bolt is installed using spanner, new crab-bolt decentralization and unbroken crab-bolt 5
Extraction is on the contrary, new crab-bolt is securedly mounted on T-steel 1 by new crab-bolt after reaching former absolute altitude using nut；
Step 7: the tensioning of new crab-bolt：Tensioning is carried out to mounted new screw rod and is stretched to setting value.
In the present embodiment, the spanner is hydraulic spanner, and the first lock piece 11-1 and the second lock piece 11-2 are
Lock-nut.
After the present invention is in use, newly crab-bolt enters work-yard, it is necessary to effectively protected, prevent corrosion, work progress
In handle with care, prevent that new crab-bolt is caused to damage, in work progress, do not change crab-bolt and be likely to occur fracture, after fracture
Workmen is easily hurt during ejection, therefore the crab-bolt do not changed must be subjected to reinforcement protection before construction, is hindered after avoiding ejection
People, round steel machining support can be used, ground construction is avoided in this work progress and takes a large amount of places, construction is avoided using large-scale
Plant equipment, the public hazards such as vibration, noise, dust are reduced to greatest extent, the resident and enterprises and institutions for ensureing surrounding can be just
Often life and work, using effect are good.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (8)
- A kind of 1. crab-bolt dismounting structure in prestressed bolt basis, it is characterised in that：Including being torn open to unbroken crab-bolt (5) The first dismounting structure removed and the second dismounting structure removed to fracture crab-bolt (12), first dismounting structure are arranged on The top of upper anchor slab (8), first dismounting structure include being sleeved on successively the first power transmission nut in unbroken crab-bolt (5), First plane needle roller thrust bearing (10-1) and the first lock piece (11-1)；Second dismounting structure is included through upper anchor slab (8) stretch in sleeve pipe (6) and pass through sleeve (13) and fracture for the power transmission muscle (14) of fracture crab-bolt (12) power transmission, power transmission muscle (14) Crab-bolt (12) coordinates, and part of power transmission muscle (14) leakage above upper anchor slab (8) is set with the second power transmission nut, second flat successively Face needle roller thrust bearing (10-2) and the second lock piece (11-2), on the first power transmission nut and on the second power transmission nut Spanner is provided with, the fracture end of fracture crab-bolt (12) is provided with fracture linkage section, and power transmission muscle (14) is stretched in sleeve pipe (6) One end is provided with the physical dimension all same of power transmission connection section, the fracture linkage section and the power transmission connection section.
- 2. according to the crab-bolt dismounting structure in a kind of prestressed bolt basis described in claim 1, it is characterised in that：It is described disconnected Split linkage section and the power transmission connection Duan Jun and six prism structures are processed as by electric discharge machine, sleeve (13) is sleeved on the fracture On linkage section and the power transmission connection section.
- 3. according to the crab-bolt dismounting structure in a kind of prestressed bolt basis described in claim 1, it is characterised in that：Described One lock piece (11-1) and the second lock piece (11-2) are lock-nut.
- 4. according to the crab-bolt dismounting structure in a kind of prestressed bolt basis described in claim 1, it is characterised in that：Described One power transmission nut includes the stress nut one (9-1) that two priorities are set in unbroken crab-bolt (5), the second power transmission nut The stress nut two (9-2) being set in including two priorities on power transmission muscle (14), stress nut one (9-1) and stress nut two (9-2) physical dimension all same.
- 5. according to the crab-bolt dismounting structure in a kind of prestressed bolt basis described in claim 4, it is characterised in that：It is described to pull The quantity of hand is equal with the quantity of stress nut one (9-1) or stress nut two (9-2), and the spanner and stress nut one (9-1) or stress nut two (9-2) correspond.
- 6. according to the crab-bolt dismounting structure in a kind of prestressed bolt basis described in claim 1, it is characterised in that：It is described to pull Hand is hydraulic spanner.
- A kind of 7. construction method that crab-bolt replacing is carried out using dismounting structure as claimed in claim 1, it is characterised in that：The construction Method comprises the following steps：Step 1: obtain crab-bolt pulling force in prestressed bolt basis：Using crab-bolt pull force calculation instrument detection prestressed bolt basis Middle crab-bolt pulling force, check crab-bolt working condition in prestressed bolt basis；Step 2: judge whether crab-bolt is broken in prestressed bolt basis：According to being detected in step 1 in crab-bolt pull force calculation instrument As a result judge whether crab-bolt is broken in prestressed bolt basis, if crab-bolt pulling force is detected in crab-bolt pull force calculation instrument is less than pulling capacity During threshold value, crab-bolt is broken in prestressed bolt basis, performs step 3；It is not small that if crab-bolt pulling force is detected in crab-bolt pull force calculation instrument When drawing force threshold, crab-bolt is unbroken in prestressed bolt basis, performs step 4；Step 3: the dismounting of fracture crab-bolt, detailed process are as follows：Step 301, the fracture depth for determining fracture crab-bolt simultaneously remove the discarded crab-bolt reinforcing bar in fracture crab-bolt top：Seen using camera Sleeve pipe (6) interior image corresponding to fracture crab-bolt (12) is examined, the fracture depth of fracture crab-bolt (12) is measured using steel ruler；Then, will The discarded crab-bolt reinforcing bar for being broken crab-bolt (12) top is extracted out out of sleeve pipe (6), the discarded crab-bolt reinforcing bar and fracture crab-bolt (12) Form a complete crab-bolt in prestressed bolt basis；Step 302, remove sleeve pipe：Sleeve pipe (6) corresponding to crab-bolt (12) is broken in dismantling step 301；Step 303, choose sleeve and process fracture linkage section：The model of sleeve (13) is determined according to the diameter of sleeve pipe (6), so Afterwards, according to the model of sleeve (13) to determining that the fracture crab-bolt (12) of fracture depth is broken using electric discharge machine in step 301 Linkage section processing is split, sleeve (13) is hollow structure and is the sleeve of six sides in cylindrical, and the fracture linkage section is six prism knots Structure；Step 304, connection power transmission muscle：One end of advance power transmission muscle (14) is processed according to the model of sleeve (13), formed The power transmission connection section of power transmission muscle (14), the power transmission of power transmission muscle (14) is connected after sleeve (13) is connected on the fracture linkage section Connect section to be connected in sleeve (13) through upper anchor slab (8), six prism structures that the power transmission connection Duan Weiyu sleeves (13) coordinate；Step 305, remove fracture crab-bolt：First, power transmission muscle (14) leaks outside part above upper anchor slab (8) in step 304 The second power transmission nut is set with, the second power transmission nut includes the stress nut two that two priorities are set on power transmission muscle (14) (9-2), wherein, it is screwed into the direction being screwed into after first stress nut two (9-2) along first stress nut two (9-2) and reversely pacifies Fill a spanner, then be screwed into second stress nut two (9-2), be screwed into after second stress nut two (9-2) along second by The direction that power nut two (9-2) is screwed into reversely is installed by one spanner again；Then, on second stress nut two (9-2) successively Second plane needle roller thrust bearing (10-2) and the second lock piece (11-2) are installed；Finally, first (9- of stress nut two of unscrewed 2) spanner installed on, locked first stress nut two (9-2), then installed on second stress nut two (9-2) of unscrewed Spanner, locked second stress nut two (9-2), two spanner alternations successively, until will fracture crab-bolt (12) under Anchor slab is produced on (3), and fracture crab-bolt (12) is extracted out from the hole where sleeve pipe (6)；Step 4: the dismounting of unbroken crab-bolt, detailed process are as follows：The pressure release of step 401, unbroken crab-bolt：By the complete pressure release in top of unbroken crab-bolt (5) to be replaced；Step 402, remove unbroken crab-bolt：First, unbroken crab-bolt (5) leaks outside above upper anchor slab (8) in step 401 Part the first power transmission nut of suit, the first power transmission nut include the stress that two priorities are set in unbroken crab-bolt (5) Nut one (9-1), wherein, it is screwed into the direction being screwed into after first stress nut one (9-1) along first stress nut one (9-1) Reversely one spanner of installation, then is screwed into second stress nut one (9-1), is screwed into after second stress nut one (9-1) along the The direction that two stress nuts one (9-1) are screwed into reversely is installed by one spanner again；Then, in second stress nut one (9-1) Upper priority installs the first plane needle roller thrust bearing (10-1) and the first lock piece (11-1)；Finally, first stress spiral shell of unscrewed The spanner installed on one (9-1) of mother, locked first stress nut one (9-1), then second stress nut one (9-1) of unscrewed The spanner of upper installation, locked second stress nut one (9-1), two spanner alternations successively, until by unbroken crab-bolt (5) produced from lower anchor slab (3), and unbroken crab-bolt (5) is extracted out from corresponding sleeve pipe (6)；Step 403, remove sleeve pipe：Sleeve pipe (6) corresponding to unbroken crab-bolt (5) in dismantling step 402；Step 5: cleaning hole：Situation in hole is checked corresponding to sleeve pipe (6) using camera, and hole is suctioned out using dust catcher Interior residue；Step 6: more renew crab-bolt：New crab-bolt is installed using spanner, new crab-bolt decentralization is taken out with unbroken crab-bolt (5) Go out process on the contrary, new crab-bolt is securedly mounted on T-steel (1) by new crab-bolt after reaching former absolute altitude using nut；Step 7: the tensioning of new crab-bolt：Tensioning is carried out to mounted new screw rod and is stretched to setting value.
- 8. according to the construction method described in claim 7, it is characterised in that：The spanner is hydraulic spanner, first locking Part (11-1) and the second lock piece (11-2) are lock-nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710713456.6A CN107338817B (en) | 2017-08-18 | 2017-08-18 | Anchor bolt dismantling structure in prestressed anchor bolt foundation and replacement construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710713456.6A CN107338817B (en) | 2017-08-18 | 2017-08-18 | Anchor bolt dismantling structure in prestressed anchor bolt foundation and replacement construction method |
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| CN107338817A true CN107338817A (en) | 2017-11-10 |
| CN107338817B CN107338817B (en) | 2022-09-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123377A (en) * | 2021-05-12 | 2021-07-16 | 中国十五冶金建设集团有限公司 | Method for replacing anchor plate bolt of foundation of wind driven generator by excavating roadway |
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| CN106320367A (en) * | 2016-10-11 | 2017-01-11 | 北京健安诚岩土工程有限公司 | Prestress rock anchor rod foundation with anchor rods capable of being replaced |
| CN206971293U (en) * | 2017-08-18 | 2018-02-06 | 陕西格瑞特电力工程有限公司 | A kind of crab-bolt dismounting structure in prestressed bolt basis |
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| CN101397796A (en) * | 2008-09-12 | 2009-04-01 | 葛培中 | Construction method of prestressed anchor rod static pressure pile |
| CN203925895U (en) * | 2014-07-07 | 2014-11-05 | 闵怡红 | For wind power generation stepped crab-bolt Changable type basis |
| CN105155571A (en) * | 2015-08-20 | 2015-12-16 | 江苏金海新能源科技有限公司 | Replaceable prestressed anchor bolt device and mounting and replacement construction method thereof |
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| CN113123377A (en) * | 2021-05-12 | 2021-07-16 | 中国十五冶金建设集团有限公司 | Method for replacing anchor plate bolt of foundation of wind driven generator by excavating roadway |
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| CN107338817B (en) | 2022-09-13 |
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