CN100370081C - Shell expand anchorage head and anchor bar - Google Patents
Shell expand anchorage head and anchor bar Download PDFInfo
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- CN100370081C CN100370081C CNB2005100506508A CN200510050650A CN100370081C CN 100370081 C CN100370081 C CN 100370081C CN B2005100506508 A CNB2005100506508 A CN B2005100506508A CN 200510050650 A CN200510050650 A CN 200510050650A CN 100370081 C CN100370081 C CN 100370081C
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Abstract
The present invention discloses an expansion shell anchor head which is composed of an expansion shell inner wedge and an expansion shell outer wedge, wherein the outer wedge covers the inner wedge which is a hollow round dome with a hollow cavity, a large bottom surface and a small top surface, and the hollow cavity is communicated with the top surface and the bottom surface of the inner wedge; the upper end of the inner wedge has longitudinal open slots which are communicated with the hollow cavity and the top surface of the inner wedge; the outer surface of the lower end of the inner wedge has grooves which are communicated with the bottom surface of the inner wedge; the outer wedge is a hollow cylinder with a hollow cavity which is communicated with the top surface and the bottom surface of the outer wedge, the open slots of the outer wedge are mutually perpendicular on the surface of the outer wedge, and the open slots in opposite directions divide the outer wedge into a plurality of flaps. The present invention also discloses an anchor rod with the expansion shell anchoring head, which solves the problems of grouting and anchoring when the anchor rod is installed onto other devices, and the phenomenon that the grouting is full and the protective layer of the anchor rod is even is ensured.
Description
Technical field
The invention belongs to geotechnical engineering anchoring support technical field, relate to the bloated shell anchorage head in a kind of bolt support device and have the anchor pole of this anchorage head, be applicable to the earth formation supporting of aspects such as underground construction, mining engineering, foundation ditch and slope project.
In underground construction, mining engineering, foundation ditch and the slope project process that geotechnical engineering relates to, for preventing that stratum deformation from caving in or unstability jeopardizes safety, a kind of main support technology that the stratum is reinforced is to adopt anchor pole.By be arranged on anchor pole had in the stratum high strength resistance to tension and by closely knit mode such as combine between anchor pole and injecting cement paste around the anchor pole and the stratum with stratum consolidation, with the globality on raising stratum.With the control stratum deformation, make it to reach the stability and safety state.The development of this technology is existing century-old history, and proposes multiple bolt support type and technology to adapt to the different stratum and the needs of different condition.
With regard to the anchor pole type, can be divided into substantially:
Rigidity by anchor bar body can be divided into: make the bar reinforcement anchor pole (Baranchor) of the body of rod and make Anchor cable-rod (strand anchor) the two big classes of the body of rod with flexible high-strength steel hank knotting with reinforcing bar or steel pipe.The multi beam type anchor pole (multi-strand anchor) that Anchor cable-rod is generally formed with many steel hank knottings based on prestressing force, because construction is complicated, requires high to plant equipment.Be applicable to that generally anchored force has greater than 500KN, the stratum that length 10m is above.And the bar reinforcement anchor-holding force of anchor bolt generally uses less than 500KN, and the machinery that is adopted is simple, easy construction, so be to use maximum anchor poles at present, be widely used in middle-size and small-size anchoring need the stratum supporting in.As traffic tunnel, water conservancy and hydropower tunnel, mining tunnel, general foundation ditch and slope retaining.
In the bar reinforcement anchor pole 1) can be divided into grouted anchor bar and non-grouted anchor bar by the anchoring type.2) can be divided into non-prestressed anchor pole and prestressed anchor by the prestressing force mode.3) can be divided into mechanical. points anchor formula and full bond-anchorage type by the prestress anchoraging segmented mode.4) can divide non-binding type prestressed anchor and binding type prestressed anchor by the free section of prestressed anchor.5) can be divided into solid anchor pole and hollow (hollow) anchor pole by body of rod shape.6) can be divided into automatic anchor pole and non-automatic anchor pole by the mode of creeping into.
In the bar reinforcement anchor pole, China's National Standard anchor pole concrete-spraying technology standard " (GB50086-2001), " highway tunnel design specifications " (TJJ026-90), " Design of Railway Tunnel standard " (TB10003-99), " relate to multiple bar reinforcement anchor pole type in anchoring and the slurry injection technique handbook documents such as (China Electric Power Publishing House, in September, 1999):
1. muscle grouting rock bolt: adopt indented bars to make the body of rod, its construction technology is that cement mortar is injected in the boring back in the stratum, inserts reinforcing bar again in band slurry duct, and reinforcing bar, mortar are combined with the stratum.Belong to anchoring type anchor pole after the first slip casting, its mechanics principle is after mortar solidifies, the body of rod 2.Bear pulling force restriction stratum deformation with the stratum distortion.This anchor bolt construction is easy.Its shortcoming is: 1) the slurry plumpness is difficult to guarantee, and has off-set phenomenon when inserting reinforcing bar, and thickness of protection tier is difficult for evenly, and anchored force is little.Destroy so make corrosion of steel bar.2) simultaneously because of not implementing prestressing force, injecting cement paste ftractures with the reinforcing bar distortion, makes aqueous vapor directly invade reinforcing bar, influences application life.3) be not suitable for broken formation.4) because of bolt support power slowly forms the hard back of knot at mortar, so inapplicable need form the occasion of supporting power rapidly.
2. the solid anchor pole of the full bonding of high-early (strength) cement powder stick anchor pole and resin explosive roll anchoring: though be that the solid anchor pole of ordinary mortar is improved; applicable stratum expanded range; and can form supporting power rapidly; but anchoring slurry plumpness and thickness of protection tier still are difficult to guarantee because of structure aspect problem; influence the reliability of anchor bar body, be used for temporary lining more.
3. water swelling formula anchor pole and pipe-seam type anchor rod: utilize the body of rod and hole wall and rub and form supporting power.Belong to non-grouted anchor bar, generally be only applicable in temporary lining and the good rock stratum.
4. expansion sleeve bolt: utilizing the bloated shell power of anchorage head to form a some anchor-hold, is the anchor-hold that non-binding type anchoring produces.Shell power is by shell and the hole wall friction formation of expanding owing to expand, so be only applicable to preferably in the rock stratum; And in the prior art, expansion sleeve bolt is solid anchor pole, and behind bloated shell end anchorage, full anchor pole section can not be carried out grouting behind shaft or drift lining, so be used in the temporary lining more.
5. hollow automatic anchor pole: Chinese patent ZL95202848.4 discloses a kind of hollow automatic anchor pole, makees drilling rod by hollow lever and adds drill bit and realize drilling rod and anchor pole unification, slip casting again after creeping into.This technical scheme lays particular emphasis on a little less than the dead-soft and the grouting support of broken rock, but its shortcoming is an injecting cement paste anchoring overlong time, because of technological reason can not form anchored force rapidly, so the inapplicable stratum that needs quick supporting.
In sum, all there is shortcoming separately in above-mentioned anchor pole type, and is only applicable to certain occasion.Particularly in upward hole bolt support situation, in the bolt support of arch, make anchor pole tenesmus problem with regard to solving gravity of anchor pole own and grouting pressure when skyhook, this has only the anchor pole that forms quick supporting power to trust.In the above-mentioned anchor pole type, have only end anchorage type anchor pole, friction rock bolt just to solve preferably and go up to installation question.But make the anchor pole bond-anchorage by slip casting, and utilize bond-anchorage to improve the durability of anchor pole, can't accomplish.
For addressing the above problem, Chinese invention patent ZL02112233.4 discloses a kind of anchor rod support method and segmented hollow grouting anchor thereof, a kind of technical scheme of proposition be a kind of morning of strong anchoring, can prestressed segmented hollow grouting anchor.This technical scheme is during as prestressed anchor, hollow lever is free section, the solid body of rod is an anchoring section, is the binding type prestressed anchor that quick anchoring that anchoring section is carried out in the early strong anchoring agent of powder stick or resin combines with the hollow lever grouting behind shaft or drift lining, in the applicable and various rock stratum.For solving the bolt grouting problem, this technical scheme has proposed bearing plate (and stop grouting plug is with holes) with holes and can insert connecting pipe and utilize the cavity of hollow bolt body with the intercommunicating pore of branch sleeve ground anchor hole, connecting pipe to be communicated with formation slip casting-exhaust passage, has solved the bolt grouting problem when the anchor pole up/down is installed.This device can play the temporary lining effect of holding concurrently again simultaneously of permanent support function.This device has proposed a solution interim and that the permanent support technology unites two into one.
China utility model patent ZL200320107953.5 discloses a kind of expansion sleeve bolt.This anchor pole is by bloated (rising) shell anchorage head, anchor bar body, bearing plate, nut, compositions such as exhaust or inlet pipe road.This technical scheme adopts hollow tube to make anchor bar body or tie up a pipeline with solid reinforcing bar to replace hollow tube to make anchor bar body, the backing plate connecting pipe of inserting with holes, and the shell anchorage head that expands is done the termination point of anchor rod anchoring, after the shell anchorage head anchoring of expanding is installed, carries out the slip casting anchoring again.For solving the bolt grouting problem, this technical scheme has proposed bearing plate (and stop grouting plug with holes) with holes and can insert connecting pipe and utilize the cavity of hollow bolt body ground anchor hole, connecting pipe to be communicated with formation slip casting-exhaust passage, the bolt grouting problem when having solved the installation of anchor pole up/down with intercommunicating pore in the bloated shell anchorage head.This device can play the temporary lining effect of holding concurrently again simultaneously of permanent support function.This device has proposed another kind of solution interim and that the permanent support technology unites two into one.
Summary of the invention
The invention provides a kind of anchorage head device and have the anchor pole of this anchorage head, provide a new approach to solve anchor pole, can guarantee that the full anchor pole topping that makes again of slip casting is even in last slip casting and the anchoring problem during to installation by this device.And this anchor pole can form support anchoring power rapidly after installing, and control rock mass deformation both can be used as permanent support, can be used as temporary lining again.
A kind of bloated shell anchorage head is made up of the outer wedge of wedge and bloated shell in the shell that expands; Outer cover of wedge is on interior wedge, and wedge is the big and hollow round table body that end face is little, the band cavity in bottom surface in the described bloated shell, and cavity is communicated with end face, bottom surface; Its external surface is a thread surface, matches with the internal thread of the outer wedge of bloated shell; There is vertical front opening groove the wedge upper end in the described bloated shell, and the front opening groove is communicated with its cavity and end face; The lower end external surface of wedge is fluted in the described bloated shell, and groove is communicated with the bottom surface; The outer wedge of described bloated shell is the hollow circular cylinder of band cavity, and cavity is communicated with end face, bottom surface.The outer wedge of described bloated shell has the vertical end face open slot that is communicated with end face and the vertical bottom surface open slot that is communicated with the bottom surface is arranged; End face open slot and bottom surface open slot are parallel to each other on the wedge surface outside, and outer wedge is divided into several limbs.
The outer wedge of described bloated shell has two vertical end face open slots that are communicated with end face and two vertical bottom surface open slots that are communicated with the bottom surface is arranged; End face open slot and bottom surface open slot are parallel to each other on the wedge surface outside, and outer wedge is divided into four limbs.
The wedge lower end not only can be flat side ring but also can be the side ring of projection in the described bloated shell, and the side ring of projection can be that ring-type also can be equally distributed toothed projections.
The external surface of the outer wedge of described bloated shell is for falling hackly surface, and described sawtooth can be the hoop distribution, herringbone distributes or graininess distributes.
A kind of anchor pole according to the manufacturing of above-mentioned bloated shell anchorage head with the shell anchorage head that expands, form by bloated shell anchorage head, anchor bar body, stop grouting plug, backing plate, nut, one end of described anchor bar body is equipped with the shell anchorage head that expands, towards interior nut, backing plate and the stop grouting plug of being equipped with successively, be made up of the outer wedge of wedge and bloated shell in the shell that expands by the shell anchorage head that expands from its termination for the other end; Wedge can be threaded with anchor rod body or by being processed to form an integrated member in the described bloated shell.
When the anchor bar body of above-mentioned anchor pole is hollow tube, after wedge is connected in anchor bar body and the bloated shell, cavity, the front opening groove of the outer wedge of cavity, longitudinal fluting, longitudinal opening groove and the bloated shell of the wedge portraitlandscape intercommunicating pore that the back forms that matches in anchor bar body internal cavity and the bloated shell, and be connected with the anchor pole installing hole.
When the anchor bar body of above-mentioned anchor pole was the solid body of rod, with the slip casting or the exhaust pipeline that pass bearing plate and stop grouting plug, the another port of pipeline extended near the bloated shell anchorage head on the body of rod.
But the hollow tube of the total length screw thread that described anchor bar body is threaded for any point or the solid body of rod, or the partial screw threads surface for only being threaded in the length of two ends, remainder is the hollow tube and the solid body of rod on non-threaded surface.
Wedge adopts the pawl fine thread to cooperate with the outer wedge of bloated shell in the described bloated shell.Stretch into boring at the bottom of the hole assembling, can adopt when initial impact make in wedge rush in outer wedge and make outer wedge distending, can pass through again outside the further precession of fine thread to make outer wedge distending to greatest extent in the wedge.
During installation, rotation can directly be impacted with manpower in the scene, wedge is when jacking or commentaries on classics are advanced forward in anchor bar body drives, the outside distending of the limb of outer wedge, produce swelling pressure power with the hole wall contact friction, make firm being installed in the bolthole of anchor pole, and make Lock Part by backing plate, nut, with the anchor bar body locking, the anchored force that expands between shell anchorage head and the crag forms in anchor pole.Simultaneously by slip casting-extract duct being set or adopting slip casting, exhaust and only starch the multi-functional stop grouting plug of function in one, can be implemented in the slip casting of anchor pole after the anchoring, make bolt grouting full, solved installation, the slip casting difficult problem of the boring anchor pole that the inclination angle makes progress in underground engineering support.
Anchorage head available metal material of the present invention is made, and also can make of nonmetals, matches with various anchor poles, and the anchor pole price is lower than general end anchorage type anchor pole, and installation, slip casting effect are remarkable, and cost performance is superior.
Description of drawings
Fig. 1 is wedge in the bloated shell of a kind of embodiment of bloated shell anchorage head of the present invention, the outer wedge decomposition texture schematic diagram of the shell that expands;
Fig. 1 a is the perspective view of wedge in the bloated shell of the another kind of embodiment of bloated shell anchorage head of the present invention;
Fig. 3 is the schematic perspective view that assembles of the shell anchorage head that expands among Fig. 1 on anchor pole;
Fig. 4 is a kind of anchor pole embodiment schematic diagrames of apparatus of the present invention when adopting hollow lever;
The grouted anchor bar embodiment schematic diagram that Fig. 5 is apparatus of the present invention when adopting the solid body of rod and slip casting-extract duct;
Fig. 6 is that the anchor pole of Fig. 4 is installed in the elevation in the stratum.
Wherein:
1- 2- 3- 4-5- 6- 7- 8-9- 10- 20- 11-12- 13-16- 17- 18-19-- 19a- 21-22- 23-24- 25- 26-27- 28- 40-50- 51- 52-100- 101-102- 103-。
The specific embodiment
As Fig. 1, a kind of bloated shell anchorage head 3 utilizes pawl to be threaded by the outer wedge 2 of wedge 1 and bloated shell in the shell that expands and forms, and when anchor pole was installed, the outer wedge distending of the shell that expands made firm being installed in the bolthole of anchor pole, and makes anchor pole placed in the middle.As Fig. 2, wedge 1 outer surface thread 11 is connected with the outer wedge 2 inner surface screw threads 21 of bloated shell in the shell that expands, and is combined into anchorage head, and wedge internal thread 12 connects anchor rod body top external screw thread 40 in the shell that expands.
Wedge 1 is by the little bottom surface of end face Rotary-table big, the band cavity in the described bloated shell, and cavity is communicated with end face 17, bottom surface 19; Its external surface is that pawl thread surface 11 matches with the internal thread 21 of the outer wedge 2 of bloated shell.There is one section band interior threaded surface 12 at wedge 1 cavity middle part in the described bloated shell, be used for and anchor bar body 10 threads engaged, and near the cavity of end face 17 less than middle cavities, end into ring 16 (seeing shown in Figure 6) with formation, the degree of depth that is threaded that is used to control anchor bar body 10 is no more than end face 17.There is vertical front opening groove 18 wedge 1 upper end in the described bloated shell, and front opening groove 18 is communicated with its cavity and end face 17, in order to slip casting and exhaust; The lower end external surface of wedge 1 is fluted 13 in the described bloated shell, and groove 13 is communicated with bottom surface 19, in order to slip casting and exhaust.Fig. 1 a is depicted as the another kind of embodiment of wedge 1 in the described bloated shell, and can there be the side ring 19a of projection its lower end, and the side ring of projection can be that ring-type also can be equally distributed toothed projections.
The outer wedge 2 of described bloated shell is served as reasons perpendicular to an end face 27 and bottom surface 26 cuttings hollow circular cylinder that form, the band cavity of longitudinal axis, and cavity is communicated with end face 77, bottom surface 16.The outer wedge 2 of described bloated shell has two vertical end face open slots that are communicated with end face 27 23 and two vertical bottom surface open slots 24 that are communicated with bottom surface 26 is arranged; End face open slot 23 and bottom surface open slot 24 are parallel to each other on the wedge surface outside, and outer wedge is divided into four limbs 25.Its end face open slot 23 is about 3/4～7/8 of outer wedge 2 total lengths with bottom surface open slot 24.Outer wedge 2 inner surfaces 21 of described bloated shell have the screw thread that matches with wedge 1 external surface 11 in the bloated shell.
Influence the anchor pole installation for preventing to open, when assembling anchorage head 3, outer wedge 2 external surfaces of described bloated shell sentence rope 28 bottom or other objects are tied up; When anchor pole was in place in the stratum, along with limb 25 distendings of the outer wedge 2 of shell that expands, rope was thereupon being out of shape or disconnection and ineffective.
Wedge 1 adopts the pawl fine thread to cooperate with the outer wedge 2 of bloated shell in the described bloated shell.Stretch into boring at the bottom of the hole assembling, can adopt when initial impact make in wedge 1 rush in outer wedge 2, make outer wedge 2 distendings, can pass through again outside the further precession of fine thread to make outer wedge 2 distending to greatest extent in the wedge 2.
The operating principle of shell anchorage head 3 in the ground anchor installing hole that expand is: the anchor bar body 10 that with the percussion drilling instrument shell anchorage head 3 that expands will be housed when anchor pole is installed inserts in the anchor pole installing holes 100, makes the end face 27 of wedge 2 outside the bloated shell hold out against the bottom 103 of anchor pole installing hole.When continuing percussion drilling, anchor bar body 10 drives the interior wedge 1 of the shell that expands to be continued to move to bottom 103 directions, pawl slope of thread between the inner surface of the external surface of interior wedge 1 and outer wedge 2 produces relative motion, make four limbs 25 progressively distending outwards push crag 102, the production anchored force.When anchor bar body 10 can not rotate when entering, show limb 25 to greatest extent during distending, the shell anchoring of expanding is finished.
Fig. 4 is the grouted anchor bar embodiment schematic diagrames of apparatus of the present invention when adopting hollow lever.As shown in the figure, anchor pole is made up of bloated shell anchorage head 3, anchor bar body 10, stop grouting plug 7, backing plate 8, nut 9.One end of described anchor bar body 10 is equipped with the shell anchorage head 3 that expands, and is threaded with the interior wedge 1 of bloated shell anchorage head 3; Its other end from its termination towards interior nut 9, backing plate 8 and the stop grouting plug 7 of being equipped with successively.Encircle 5 in the hard of described stop grouting plug 7 by flexible outer shroud 4, band injected hole, be with the tight latch fitting 6 of longitudinal fluting to form.Flexible outer shroud 4 is enclosed within the hard on the ring 5, and in the closely connected horn mouth that is installed in ring 5 in the hard of tight latch fitting 6, the endoporus that the stop grouting plug of forming like this 7 passes through tight latch fitting 6 is connected with anchor bar body 10 thread surfaces.The longitudinal fluting of tight latch fitting 6 is communicated with the inner chamber and the slurry outlet of ring 5 in the hard, forms the slip casting passage.
The grouted anchor bar embodiment schematic diagram that Fig. 5 is apparatus of the present invention when adopting the solid body of rod and slip casting-extract duct.As shown in the figure, when anchor bar body 10 is the solid body of rod, the long tube 50 that adopts during the solid body of rod used with the slip casting of passing bearing plate or exhaust on the body of rod, the another port of long tube 50 extends near the shell anchorage head that expands.
Fig. 6 is that the anchor pole of Fig. 4 is installed in the elevation in the stratum, the situation when upwards installing for anchor pole.Hollow lever 10 connects the interior wedge 1 of bloated shell and heads into the outer wedge 2 of bloated shell, and by four limbs, the 25 outside distendings of wedge 2 outside the bloated shell of motion drive of wedge 1 in the shell that expands, firm foot of hole crag 103 is pushed up at the outer wedge top 27 of the shell that expands, and external tooth 22 and crag 102 swelling pressures lock anchor pole.Anchor pole carries out the slip casting anchoring after locking is installed, its slip casting operating principle is: advance to starch by the groove of special slip casting device injecting cement paste from the stop grouting plug bottom in aperture, slurry enters bolthole 100 along advance the to starch groove, cavity, slurry outlet in the stop grouting plug 7, and progressively upwards full bolthole, last slurry cavity, groove 13, longitudinal opening groove (18 of wedge outside the wedge in the shell that expands, 23,24) and enter the cavity 20 of the hollow bolt body 10 that is communicated with it, the air in the anchor bar body is discharged from body of rod cavity 20 by above-mentioned passage.When slurries slip casting when the anchor pole exposed junction flows out finishes, and backing plate, nut are installed, anchor pole installs.
The external surface of the outer wedge 2 of the bloated shell shown in apparatus of the present invention is for falling hackly surface, and described sawtooth 22 can be the hoop distribution, herringbone distributes or graininess distributes.
Wedge 1 can be threaded with anchor rod body 10 or by being processed to form an integrated member in the described bloated shell.
But described anchor bar body 10 not only comprises the hollow tube or the solid body of rod of the total length screw thread that any point is threaded, and comprises the only partial screw threads surface in the length of two ends, and remainder is the hollow tube and the solid body of rod on non-threaded surface.
The anchor pole that has the shell anchorage head that rises of the present invention, mounting process is realized as follows when adopting the embodiment of Fig. 5:
1. the usefulness auger is holed in stratum (rock stratum) and is cleaned boring;
2. at the scene a termination of anchor bar body 10 is connected with the female thread 12 of wedge 1 in the bloated shell, interior wedge 1 inserts in the outer wedge 2 continuous with screw thread, assembles in place;
3. will assemble bloated shell anchor head 3 in place inserts in the boring together with hollow bolt body 10, means such as another termination rotation impact at hollow bolt body 10 make anchorage head 3 be inserted into foot of hole 103 together with anchor bar body 10, when wedge 1 outside wedge 2 inner chamber jackings or commentaries on classics are advanced in anchor rod body 10 drives, outer wedge 2 tops 27 hold out against foot of hole 103, make the limb 25 outside distendings of outer wedge 2.When anchor bar body 10 can not rotate when entering, show limb 25 to greatest extent during distending, the shell anchoring of expanding is finished.After anchorage head 3 installations, the frictional force that the is produced recoil strength that pressure is produced during at least greater than the gravity of anchor pole itself and slip casting.
4. ring in the hard of multi-functional stop grouting plug 5 is inserted flexible outer shroud 4, multi-functional stop grouting plug 7 is inserted in anchor pole, screw locking member 6, make closely connected rock stratum, the expansion rear end bearing surface 101 of flexible outer shroud 4 in hell.
5. after finishing above-mentioned steps, can carry out slip casting to anchor bar body.Adopt the outer hollow lever 10 of special slip casting fitting sleeve man-hole opening, the rear end locks with the work nut, groove on the tight latch fitting outer shroud of filling adaptor front end grout outlet and stop grouting plug leads to the slurry outlet of ring in the hard, the front end thin layer that flicks flexible outer shroud enters bolthole, slurry is advanced in realization in the hole from the anchor rod body outer ring, slurry is the cavity of full whole bolthole gradually, after wedge 1 is connected in anchor bar body hollow tube 10 and the bloated shell, the cavity of wedge 1 and interior wedge front opening 18 and the outer wedge open slot 23 of bloated shell in anchor bar body internal cavity 20 and the bloated shell, 24 form passage, air is discharged by body of rod cavity 20, can realize grouting behind shaft or drift lining.Flow by the direction of arrow shown in Figure 4, when slurries when the anchor pole exposed junction flows out, slip casting is finished.The anchor pole up/down is installed all identical.
6. pull down work nut, special slip casting joint, mounting support backing plate 8, locking nut 9, anchor pole installs.
Mounting process is realized as follows when adopting the embodiment of Fig. 5:
1. with above-mentioned step 1～3;
2. stop grouting plug 7 and exhaust Grouting Pipe 52 are installed, backing plate are installed, nut.
3. after the above-mentioned steps, can carry out slip casting to anchor bar body.1) when anchor pole is installed downwards (when hang down in foot of hole 103 relative apertures, as under underground chamber, the side slope when anchor pole is installed) long tube 50 that adopts during the other solid body of rod of anchor bar body 10 is as the slip casting road, be installed on the backing plate 8, pipeline 52 is as exhaust duct, slip casting liquid exposes the end from anchor pole and enters chamber 6, arrive the other end of anchor bar body, and form two longitudinal holes by wedge 2 front openings 18 in the shell that expands and longitudinal fluting 13 with outer wedge end face open slot 23, bottom surface open slot 24 and flow out, and be full of boring formation grouting reinforcement body gradually to foot of hole.When slurries stop slip casting, anchor pole installation when exhaust pipe 52 flows out.2) when anchor pole is upwards installed (when foot of hole is higher than the aperture) as underground chamber arch anchor pole installation situation, pipeline 52 is the slip casting road, long tube 50 is made exhaust duct.During slip casting, the full gradually injecting cement paste that forms of slurry, and the duct that forms of the front opening 18 by wedge 2 in the bloated shell of the shell anchor head 1 that expands and the outer wedge end face open slot 23 of bloated shell, bottom surface open slot 24 enters the other long tube 50 of anchor bar body 10.When slurries flow out from long tube 50 ends, stop slip casting, finish anchor pole and install.
Claims (10)
1. a bloated shell anchorage head is made up of the outer wedge (2) of wedge (1) and bloated shell in the shell that expands; Outer wedge (2) is enclosed within on the interior wedge (1), and wedge (1) is the big end face in bottom surface hollow round table body little, the band cavity in the described bloated shell, and cavity is communicated with end face (17), bottom surface (19); Its external surface (11) is a thread surface, matches with the internal thread (21) of the outer wedge (2) of bloated shell; There is vertical front opening groove (18) wedge (1) upper end in the described bloated shell, and front opening groove (18) is communicated with its cavity and end face (17); The lower end external surface fluted (13) of wedge (1) in the described bloated shell, groove (13) is communicated with bottom surface (19); The outer wedge (2) of described bloated shell is the hollow circular cylinder of band cavity, and cavity is communicated with end face (27), bottom surface (26); The outer wedge (2) of described bloated shell has vertical end face open slot (23) that is communicated with end face (27) and the vertical bottom surface open slot (24) that is communicated with bottom surface (26); End face open slot (23) and bottom surface open slot (24) are parallel to each other on the wedge surface outside, and outer wedge is divided into several limbs (25).
2. bloated shell anchorage head according to claim 1 is characterized in that: the external surface of the outer wedge (2) of described bloated shell is the thread surface of falling the zigzag, and described sawtooth is that hoop distributes, herringbone distributes or graininess distributes.
3. bloated shell anchorage head according to claim 1 is characterized in that: the external surface (11) of wedge (1) is the pawl thread surface in the described bloated shell, matches with the interior pawl screw thread (21) of the outer wedge (2) of bloated shell.
4. bloated shell anchorage head according to claim 1 and 2 is characterized in that: wedge (1) lower end is the flat side ring or the side ring (19a) of projection in the described bloated shell.
5. bloated shell anchorage head according to claim 4 is characterized in that: the side ring of described projection (19a) is ring-type or equally distributed toothed projections.
6. bloated shell anchorage head according to claim 1 is characterized in that: the outer wedge (2) of described bloated shell has two vertical end face open slots (23) that are communicated with end face (27) and two vertical bottom surface open slots (24) that are communicated with bottom surface (26); End face open slot (23) and bottom surface open slot (24) are parallel to each other on the wedge surface outside, and outer wedge is divided into four limbs (25).
7. according to a kind of anchor pole of the arbitrary described bloated shell anchorage head of claim 1-6 manufacturing with the shell anchorage head that expands, it is characterized in that: this anchor pole is made up of bloated shell anchorage head (3), anchor bar body (10), stop grouting plug (7), backing plate (8), nut (9), one end of described anchor bar body (10) is equipped with the shell anchorage head (3) that expands, towards interior nut (9), backing plate (8) and the stop grouting plug (7) of being equipped with successively, be made up of the outer wedge (2) of wedge (1) and bloated shell in the shell that expands by described bloated shell anchorage head (3) from its termination for the other end; Wedge (1) and anchor rod body (10) are by being threaded or by being processed to form an integrated member in the described bloated shell.
8. a kind of anchor pole according to claim 7 with the shell anchorage head that expands, it is characterized in that: when described anchor bar body (10) is hollow tube, after wedge (1) is connected in anchor bar body (10) and the bloated shell, the portraitlandscape intercommunicating pore of the cavity of wedge (1) in anchor bar body internal cavity (20) and the bloated shell, longitudinal fluting (13), formation after vertically cavity, end face open slot (23) and the bottom surface open slot (24) of front opening groove (18) and the outer wedge (2) of bloated shell match, and be connected with anchor pole installing hole (100).
9. a kind of anchor pole according to claim 7 with the shell anchorage head that expands, it is characterized in that: described anchor bar body (10) is during for the solid body of rod, with the long tube (50) that passes bearing plate (8) and stop grouting plug (7), the another port of long tube (50) extends near the shell anchorage head (3) that expands on the body of rod.
10. according to the arbitrary described a kind of anchor pole of claim 7-9 with the shell anchorage head that expands, it is characterized in that: the hollow tube or the solid body of rod of the total length screw thread that described anchor bar body (10) is threaded for any point, or the partial screw threads surface for only in the length of two ends, being threaded, remainder is the hollow tube and the solid body of rod on non-threaded surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100506508A CN100370081C (en) | 2005-07-08 | 2005-07-08 | Shell expand anchorage head and anchor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100506508A CN100370081C (en) | 2005-07-08 | 2005-07-08 | Shell expand anchorage head and anchor bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1737270A CN1737270A (en) | 2006-02-22 |
| CN100370081C true CN100370081C (en) | 2008-02-20 |
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| CNB2005100506508A Active CN100370081C (en) | 2005-07-08 | 2005-07-08 | Shell expand anchorage head and anchor bar |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808635B (en) * | 2012-07-20 | 2015-10-07 | 中国科学院武汉岩土力学研究所 | A kind of swollen shell-type Inner bolt head prestressed anchor and installation and application thereof |
| CN103774652B (en) * | 2012-10-26 | 2015-10-28 | 兰州大学 | Smoothly prevent the prestressed anchor extracted from anchor hole |
| CN103774648B (en) * | 2012-10-26 | 2015-12-02 | 兰州大学 | A kind of prestressed anchor preventing extracting from anchor hole |
| CN103774649B (en) * | 2012-10-26 | 2015-10-28 | 兰州大学 | Anti-mouth prevents the prestressed anchor extracted from anchor hole |
| CN104153365A (en) * | 2013-05-15 | 2014-11-19 | 青岛天力建筑加固工程有限公司 | Self-locking anchor rod head |
| CN104846823B (en) * | 2015-05-18 | 2017-11-14 | 中国葛洲坝集团第一工程有限公司 | It is complete to bond anchor rod with cement mortar and grouting method |
| CN105114110A (en) * | 2015-09-21 | 2015-12-02 | 洛阳中岩工程材料有限公司 | Novel slide way type expanding-shell anchor head |
| CN105464690A (en) * | 2015-12-08 | 2016-04-06 | 天津市力胜通预应力工程有限公司 | Novel pre-stress anchor rod |
| CN105863698B (en) * | 2016-05-20 | 2018-03-13 | 河南理工大学 | A kind of high-elongation combination of steel rope and its installation method |
| CN108086314A (en) * | 2017-12-13 | 2018-05-29 | 浙江海洋大学 | The Recyclable anchor rope of civil engineering |
| CN109838257A (en) * | 2019-01-30 | 2019-06-04 | 中国铁建重工集团有限公司 | A kind of anchor dispensing device and its construction for rock bolting jumbo |
| NO20200478A1 (en) * | 2020-04-21 | 2021-10-22 | Sms Tech Holding As | Combination rock bolt and method for its manufacture |
| CN115125971A (en) * | 2022-07-14 | 2022-09-30 | 济南百合园林集团有限公司 | Technical method for ecological restoration of damaged mountain side slope |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911550A (en) * | 1996-12-16 | 1999-06-15 | Hilti Aktiengesellschaft | Self-cutting dowel |
| CN1544798A (en) * | 2003-11-11 | 2004-11-10 | 吴德兴 | Shell expansion type rock bolt |
-
2005
- 2005-07-08 CN CNB2005100506508A patent/CN100370081C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911550A (en) * | 1996-12-16 | 1999-06-15 | Hilti Aktiengesellschaft | Self-cutting dowel |
| CN1544798A (en) * | 2003-11-11 | 2004-11-10 | 吴德兴 | Shell expansion type rock bolt |
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| CN1737270A (en) | 2006-02-22 |
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