CN102477740A - Electric isolation protective anchor cable as well as making and mounting method thereof - Google Patents
Electric isolation protective anchor cable as well as making and mounting method thereof Download PDFInfo
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- CN102477740A CN102477740A CN2011102475213A CN201110247521A CN102477740A CN 102477740 A CN102477740 A CN 102477740A CN 2011102475213 A CN2011102475213 A CN 2011102475213A CN 201110247521 A CN201110247521 A CN 201110247521A CN 102477740 A CN102477740 A CN 102477740A
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Abstract
The invention provides an electric isolation protective anchor cable. The electric isolation protective anchor cable comprises an anchor cable body and an external anchor head which are integrally connected with each other, wherein a protective structure whose full length is coated by 1-2 corrugated pipes is adopted for the anchor cable body; one end of one corrugated pipe is provided with a guide cap while the other end of the corrugated pipe is led below an anchoring plate of an anchoring device of the external anchor head; a prestressed reinforcing steel with a PE (Poly Ethylene) sleeve is connected with the anchoring device; an external slurry injection pipe which penetrates through the guide cap and is only used for injecting slurry into an anchoring hole is arranged in the anchoring cable body; 1-2 internal slurry injection pipes which do not penetrate through the guide cap and are only used for injecting slurry into the corrugated pipes are arranged in the anchoring cable body; epoxy resin solidifying materials are filled between the corrugated pipes and the guide cap so that all or parts of the corrugated pipes, the guide cap, the external slurry injection pipe and the prestressed reinforcing steel are fixedly and integrally bonded with each other; an isolation backing plate capable of enabling the anchoring device to be electrically insulated from an anchoring backing plate is mounted between the anchoring device of the external anchor head of the anchor cable and the anchoring backing plate; and sealing materials with electric insulation performances are filled between the isolation backing plate and the corrugated pipes. The anchor cable provided by the invention has the advantages of strong corrosion resistance and insulation resistance as well as high durability and safety.
Description
Technical field
The present invention relates to a kind of anchor cable, particularly a kind of anchor cable and fabrication and installation method thereof that is used to reinforce ground.
Background technology
Electrochemical corrosion is the main cause that prestress anchorage cable destroys; The anchor cable of original employing plastic film capicitor, shown in Fig. 5-1, Fig. 5-2, the anchorage cable anchoring section has only the protection of bellows one deck; And its anchoring section bellows tube wall is thinner; Camber is lower, and pitch is bigger, is unfavorable for the transmission of stress inside and outside bellows; This bellows in the breakage, loses due protection effect easily when anchor cable is installed; Secondly, its free section adopts a PE pipe to be connected with bellows, the poor sealing of its connection and cause bellows to protect inefficacy; The 3rd, the outer anchor head ground tackle of original bellows anchor cable does not adopt safeguard procedures to prevent the electrochemical corrosion of anchor cable presstressed reinforcing steel, is prone to cause cable body presstressed reinforcing steel and anchor head corrosion failure.
Notice of authorization number has the anchor cable of " double-deck protection " for " double-deck protection does not have bonding termination anchor cable " of CN2895524Y provides a kind of; But the protection of the bilayer of this scheme is the interior part of finger-hole just; Under its anchor double-deck the protection; Because of the plastics pillar of its presstressed reinforcing steel divest to billet down, the presstressed reinforcing steel that divests is protection not; Secondly this anchor cable part in the hole is not double shielding truly yet; Because the cement slurry in the hole can produce microcrack when presstressed reinforcing steel is stressed; Make cement slurry lose due safeguard function, therefore, this anchor cable also fails to solve fully the problems referred to above that prior art exists.
Summary of the invention
The object of the present invention is to provide a kind of electric isolating and protecting anchor cable; This anchor cable can both provide effective electric isolating and protecting to the outer anchor head part of the anchoring section of anchor cable cable body, free section and anchor cable; Can effectively improve the cable body projected life of prestress anchorage cable, to overcome the existing deficiency of prior art; Another object of the present invention provides the fabrication and installation method of this electricity isolating and protecting anchor cable, realizes with the purpose that guarantees the present invention's electricity isolating and protecting anchor cable.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of electric isolating and protecting anchor cable, comprise the anchor cable cable body and outer anchor head that fuse, and the anchor cable cable body adopts the total length quilt
OneThe safeguard structure of the special-purpose prestressed plastic corrugated pipe lining of bar; Bellows one end is provided with guiding cap; Also be provided with the presstressed reinforcing steel that is installed on the isolating frame in the bellows; Presstressed reinforcing steel is connected with ground tackle, and a Grouting Pipe that runs through guiding cap is arranged in the anchor cable cable body, it is characterized in that: this bellows other end is until the anchor slab below of the ground tackle of outer anchor head; The Grouting Pipe that runs through guiding cap in the anchor cable cable body is for only being used for the outside Grouting Pipe to slip casting in the anchor hole, also has one not run through guiding cap, only be used for inside Grouting Pipe I to bellows interior slip casting in the anchor cable cable body; Being perfused with the epoxy resin solidification material between bellows and the guiding cap fixedly is bonded to one the whole of bellows, guiding cap, Grouting Pipe and presstressed reinforcing steel or part; Between the ground tackle of the outer anchor head of anchor cable and the anchor plate isolation backing plate that can make electric insulation between ground tackle and the anchor plate is installed, between isolation backing plate and bellows, is perfused with encapsulant with electrical insulation capability; The PE sheath of the presstressed reinforcing steel of band PE cover directly pierces into 5～30mm in the ground tackle presstressed reinforcing steel hole.
Its further technical scheme is: in described bellows, also have 1 inner corrugated pipe; Centering frame in outside inner corrugated pipe, being provided with; In inner corrugated pipe, be provided with presstressed reinforcing steel that is installed on the isolating frame and the presstressed reinforcing steel of being with the PE cover; The presstressed reinforcing steel of band PE cover is connected with ground tackle; Have in the anchor cable cable body to also have 1 not run through guiding cap, only be used for inside Grouting Pipe II, be perfused with the material that solidifies that epoxy resin constitutes between bellows and the guiding cap bellows, guiding cap and outer Grouting Pipe fixedly are bonded to one slip casting in the inner corrugated pipe; The solidification material that is perfused with the epoxy resin formation in the inner corrugated pipe all or partly fixedly is bonded to one outer Grouting Pipe, inner Grouting Pipe I and presstressed reinforcing steel; There is the inner corrugated pipe sealing device another port of inner corrugated pipe.
Said inner corrugated pipe sealing device is made up of the forward and backward joint ring of annular; Forward and backward joint ring has a sealed tube outward; The corresponding duct that can supply outer Grouting Pipe, inner Grouting Pipe I, inner Grouting Pipe II and presstressed reinforcing steel to pass through is arranged on the forward and backward joint ring, in the joint ring of front and back, realize the sealing of internal corrugated tube end with encapsulant.
Its further technical scheme be: said isolation backing plate with electrical insulation capability be shaped as annular or tubaeform, be the isolation backing plate that adopts HDPE, LDPE, PE, PTFE, PVC and reworked material thereof to process with electrical insulation capability.
The member of the electric isolating and protecting anchor cable of said formation-outer anchor head protective cover, bellows, guiding cap, isolating frame and centering frame are the plastic products that HDPE material and reworked material thereof are processed.
The said encapsulant with electric insulation functions that is poured between isolation backing plate and the bellows is epoxy resin or polyamide.
Said presstressed reinforcing steel or steel strand or reinforcing bar zinc-plated or the coating allumen, or composite coating presstressed reinforcing steel-epoxy steel strand or epoxy-coated reinforcement.
Another related art scheme of the present invention is: the described fabrication and installation method of having only the electric isolating and protecting anchor cable of 1 layer of bellows, and it may further comprise the steps:
A, fabrication and installation anchor cable cable body: the anchor bundle of in bellows, packing into and weaving into by presstressed reinforcing steel, inner Grouting Pipe I and the outside Grouting Pipe group of isolating frame, presstressed reinforcing steel, band PE cover; Guiding cap is loaded onto in end at bellows; Infusion epoxy resin is with synchronous bonding being integral of bellows, presstressed reinforcing steel and outside Grouting Pipe in guiding cap; After treating epoxy; Prick silk or powerful adhesive plaster colligation centering frame in the bellows outside with iron wire, plastics, after the arrangement cable body is straight, whole cable body is fit in the anchor cable installing hole;
B, slip casting: carry out slip casting KJ in the anchor cable installing hole through outside Grouting Pipe earlier, slip casting GJ in the bellows is carried out through inner Grouting Pipe I in the back;
C, installation built-in fitting: the anchor plate that spiral bar, thermal shrinkable sleeve and band are isolated backing plate is installed successively, the concreting anchor pier;
D, perfusion encapsulant: before anchorage cable stretching, pour into encapsulant, the presstressed reinforcing steel of calibration tape PE cover and the insulating resistance value R of the earth reach the regulation requirement simultaneously; That is: insulaion resistance is more than or equal to 0.1M Ω;
E, installation ground tackle: after test insulating resistance value R is qualified; Ground tackle is installed; When being installed, ground tackle to guarantee to carry out the stretch-draw of presstressed reinforcing steel by relevant specification or standard-required, after the back locking with the interior 5～30mm of PE sheath entering ground tackle of the presstressed reinforcing steel of PE cover; Test the resistance value R of ground tackle and the earth once more, it is qualified reaching requirement;
F, outer anchor head protective cover is installed: install ground tackle test insulaion resistance R qualified after, outer anchor head protective cover can be installed, and other anchor cable is installed is successively installed until whole anchor cables.
Another related art scheme of the present invention is: described fabrication and installation method with electric isolating and protecting anchor cable of 2 layers of bellows, and it may further comprise the steps:
A, fabrication and installation anchor cable cable body: the anchor bundle of in anchor cable cable body inner corrugated pipe, packing into and weaving into by presstressed reinforcing steel, inner Grouting Pipe I, inner Grouting Pipe II and the outside Grouting Pipe group of isolating frame, presstressed reinforcing steel, band PE cover; And seal inner corrugated pipe one end with the inner corrugated pipe sealing device; Infusion epoxy resin is with inner corrugated pipe, presstressed reinforcing steel, inner Grouting Pipe I with outside Grouting Pipe is bonding is integral in the inner corrugated pipe other end; Then this anchor bundle is fit in the outward corrugated tube; Guiding cap is loaded onto in end at bellows; Between bellows and guiding cap in the perfusion infusion epoxy resin with synchronous bonding being integral of guiding cap, bellows and outside Grouting Pipe, treat epoxy after, the bellows outside with iron wire, plastics bundle thread or powerful adhesive plaster colligation outside the centering frame; After the arrangement cable body is straight, whole cable body is fit in the anchor cable installing hole;
B, slip casting: carry out slip casting KJ in the anchor cable installing hole through outside Grouting Pipe earlier, slip casting GJ2 in the inner corrugated pipe is carried out through inner Grouting Pipe II in the back, carries out slip casting GJ1 between inner corrugated pipe and the bellows through inner Grouting Pipe I again;
C, installation built-in fitting: the anchor plate that spiral bar, thermal shrinkable sleeve and band are isolated backing plate is installed successively, the concreting anchor pier;
D, perfusion encapsulant: before anchorage cable stretching, pour into encapsulant, the presstressed reinforcing steel of calibration tape PE cover and the insulating resistance value R of the earth reach the regulation requirement simultaneously; That is: insulaion resistance is more than or equal to 0.1M Ω;
E, installation ground tackle: after test insulating resistance value R is qualified; Ground tackle is installed; When being installed, ground tackle to guarantee to carry out the stretch-draw of presstressed reinforcing steel by relevant specification or standard-required, after the back locking with the interior 5～30mm of PE sheath entering ground tackle of the presstressed reinforcing steel of PE cover; Test the resistance value R of ground tackle and the earth once more, it is qualified reaching requirement;
F, outer anchor head protective cover is installed: install ground tackle test insulaion resistance R qualified after, outer anchor head protective cover is installed, and other anchor cable is installed is successively installed until whole anchor cables.
The present invention's electric isolating and protecting anchor cable and fabrication and installation method thereof have following beneficial effect:
1, the anchor cable cable body has effective electric isolating and protecting:
The bellows total length of the present invention's electric isolating and protecting anchor cable is arranged; The notion that described bellows total length is arranged is that the anchor from interior anchoring section guiding cap to outer anchor head is isolated the backing plate anchor slab below of the ground tackle of outer anchor head (that is: until) down; Being the plastic barrier sealing all, is good electric isolated system; Presstressed reinforcing steel is hermetic isolated system with the outer slurry of pipe in the hole inner corrugated pipe non junction, bellows, has improved the reliability of the inside and outside isolated insulation in anchor cable hole greatly; The presstressed reinforcing steel that constitutes the anchor cable cable body can be have presstressed reinforcing steel or the steel strand of epoxy or composite coating, also can be PE parcel steel strand or reinforcing bar; Whole cable body presstressed reinforcing steel has coating (epoxy or composite coating), PE wraps up the electric isolating and protecting layer with double-deck above insulating properties that constitutes with plastic film capicitor; Anticorrosive property, insulating properties are stronger, help improving the durability of anchor cable body.
2, the outer anchor head of anchor cable of the present invention also has good electric isolating and protecting:
Outer anchor head has isolates the double-deck electric isolating and protecting layer that backing plate and presstressed reinforcing steel coating or PE cover form, and has greatly improved the insulating resistance value between ground tackle and the structure; The anchor cable ground tackle of outer anchor head is to let the PE sheath of presstressed reinforcing steel of band PE cover directly be fit in the ground tackle, and presstressed reinforcing steel has PE sheath+anticorrosion grease+triple protection of loudspeaker backing plate under anchor; The outer anchor head protective cover of anchor cable of the present invention adopts plastic safety cover, and making anchor cable of the present invention all is the isolator of isolating with external electric on the whole from the guiding cap to the ground tackle, has effectively improved corrosion resistance and anchoring long-lasting of anchor cable.
3, the anchor cable system adopts bellows interior, outside separately grouting method; Secondly, adopting with the epoxy resin between bellows and the guiding cap 1 is that main solidification material fixedly is bonded to one the whole of bellows, guiding cap 1, Grouting Pipe 17 and presstressed reinforcing steel or part; Inside and outside bellows, form the seal cavity of isolating each other; Inner slurry and outside aqueous vapor exchange have been isolated; Improved the electrical insulation capability of anchor cable; And strengthened the adhesion strength of presstressed reinforcing steel and plastic film capicitor, improved the compactness and the durability of injecting cement paste under the complex environment, the safety that has better improved anchorage cable anchoring.
4, because the integral body of the present invention's electricity isolating and protecting anchor cable has two-layer above electric isolating and protecting; Therefore, the corrosion process of the effective observing and controlling anchor cable of the variation cable body of resistance value that can be through monitoring anchor cable body presstressed reinforcing steel, and metering system is ripe; Cost is lower, is beneficial to large-scale promotion and uses.
Below in conjunction with accompanying drawing and embodiment the present invention's the electric isolating and protecting anchor cable and the technical characterictic of fabrication and installation method thereof are further described.
Description of drawings
Fig. 1-1: the structural representation of the electric isolating and protecting anchor cable of the embodiment of the invention one;
The A-A sectional view of Fig. 1-2: Fig. 1; The B-B sectional view of Fig. 1-3: Fig. 1;
Fig. 2-1: the structural representation of the electric isolating and protecting anchor cable of the embodiment of the invention two;
The C-C sectional view of Fig. 2-2: Fig. 2-1;
Fig. 3-1～Fig. 3-2: the tubaeform isolating pad plated construction sketch map of the present invention's electric isolating and protecting anchor cable;
Fig. 3-1: the main sectional view, the vertical view of Fig. 3-2: Fig. 3-1 looked;
The inner corrugated pipe schematic diagram of sealing device of the electric isolating and protecting anchor cable of Fig. 4: embodiment two;
The structural representation of the existing a kind of bellows protecting anchor cable of Fig. 5-1;
The D-D sectional view of Fig. 5-2: Fig. 5-1.
Among Fig. 1-1～Fig. 2-2:
The outer anchor head of I-anchor cable, the free section of II-cable body, anchoring section in III-cable body;
The 1-guiding cap, 2-epoxy resin, 3-bellows, 4-centering frame, 5-isolating frame; The 6-presstressed reinforcing steel, the presstressed reinforcing steel of 7-band PE cover, 8-spiral bar, 9-thermal shrinkable sleeve; 10-isolates backing plate, 11-ground tackle, the outer anchor head protective cover of 12-, 13-encapsulant; The 14-anchor plate, 15-concrete anchor pier, the inner Grouting Pipe I of 161-, the outside Grouting Pipe of 17-; The 18-seal grease;
Slip casting in the MJ-anchor hole, slip casting in the GJ-bellows 3;
Among Fig. 2-1-Fig. 2-2～Fig. 4:
201,202-epoxy resin, 3-bellows (being outward corrugated tube), 302-inner corrugated pipe, the outer centering frame of 401-; Centering frame in the 402-, the inner Grouting Pipe II of 162-, joint ring before the 19-inner corrugated pipe sealing device, 191-; Joint ring before the 191-, 192-increasing back sealing ring, 193-sealed tube;
Slip casting in the KJ-anchor hole, slip casting in the GJ1-bellows 3, slip casting in the GJ2-inner corrugated pipe.
Among Fig. 5-1～Fig. 5-2:
The 21-chapeau de fer that leads, 22-plastic film capicitor, 23-centering frame, 24-isolating frame, 25-presstressed reinforcing steel, 26-thermal shrinkable sleeve, 27-circle PE pipe, the presstressed reinforcing steel of 28-band PE sheath, the pre-buried pipe of 29-, 30-spiral bar, 31-billet, 32-ground tackle, 33-Grouting Pipe.
The specific embodiment
Embodiment one:
A kind of electric isolating and protecting anchor cable; This electricity isolating and protecting anchor cable basic structure comprises the anchor cable cable body and outer anchor head that fuses; The anchor cable cable body that is made up of anchoring section III in cable body free section II and the cable body adopts total length by the safeguard structure of prestressed plastic corrugated pipe lining; Bellows one end is provided with guiding cap 1, is provided with the presstressed reinforcing steel 6 that is installed on the isolating frame 5 in the bellows, and the presstressed reinforcing steel 7 of band PE cover is connected with ground tackle; Bellows 3 other ends are until the anchor slab below of the ground tackle of outer anchor head; A Grouting Pipe that runs through guiding cap 1 is arranged in the anchor cable cable body, be equipped with between the ground tackle of the outer anchor head of anchor cable and the anchor plate one can make electric insulation between ground tackle and the anchor plate isolation backing plate 10, be perfused with encapsulant 13 isolating between backing plate 10 and the bellows 3 with electrical insulation capability;
Shown in Fig. 1-1～Fig. 1-2, the two-layer electric isolating and protecting system that the presstressed reinforcing steel that the anchor cable cable body of present embodiment adopts a total length plastic film capicitor 3 and epoxy spraying steel wire to constitute is formed; Adopt the solidification material that constitutes with epoxy resin 2 that the whole of bellows 3, guiding cap 1, Grouting Pipe 17 and presstressed reinforcing steel or part fixedly are bonded to one between bellows 3 and the guiding cap 1;
The Grouting Pipe that runs through guiding cap in the anchor cable cable body is to be exclusively used in the outside Grouting Pipe 17 of the bellows outside being carried out slip casting, also has one not run through guiding cap, only be used for inside Grouting Pipe I 161 to bellows interior slip casting in the anchor cable cable body;
The said isolation backing plate 10 that can make electric insulation between ground tackle and the backing plate is the isolation backing plate with electrical insulation capability that adopts HDPE, LDPE, PE, PTFE, PVC and reworked material thereof to process; It is shaped as annular (referring to Fig. 1-2) or tubaeform (referring to Fig. 3-1～Fig. 3-2); Have on the anchor cable ground tackle and can carry out the make a bet injected hole (not drawing among the figure) of anticorrosion grease, epoxy resin or cement based slurry material of anchor, the PE sheath of the presstressed reinforcing steel 7 of band PE cover directly pierces into 5～30mm in the ground tackle presstressed reinforcing steel hole; Can effectively form insulating space, the infiltration of stopping aqueous vapor is corroded, and strengthens the insulating corrosion of anchor lower prestress muscle;
The member of the electric isolating and protecting anchor cable of said formation-outer anchor head protective cover 12, bellows 3, inner corrugated pipe 302, guiding cap 1, isolating frame 5 and centering frame 4 are the plastic products that HDPE material and reworked material thereof are processed;
The said encapsulant with electric insulation functions 13 that is poured between isolation backing plate 10 and the bellows 3 is epoxy resin or polyamide.
The fabrication and installation method of the embodiment of the invention one said electric isolating and protecting anchor cable, it may further comprise the steps:
A, fabrication and installation anchor cable cable body: in bellows 3, pack into by presstressed reinforcing steel 7, inner Grouting Pipe I 161 and 17 groups of anchor bundles of weaving into of outside Grouting Pipe of isolating frame 5, presstressed reinforcing steel 6, band PE cover; Load onto guiding cap 1 in the end of bellows 3; Infusion epoxy resin 2 is with bellows 3, presstressed reinforcing steel 6 and outside Grouting Pipe 17 synchronous bonding being integral in guiding cap 1; After treating that epoxy resin 2 solidifies; Prick silk or powerful adhesive plaster colligation centering frame 4 in bellows 3 outsides with iron wire, plastics, after the arrangement cable body is straight, whole cable body is fit in the anchor cable installing hole;
B, slip casting: carry out slip casting KJ in the anchor cable installing hole through outside Grouting Pipe 17 earlier, slip casting GJ in the bellows 3 is carried out through inner Grouting Pipe I 161 in the back;
C, installation built-in fitting: the anchor plate 14 that spiral bar 8, thermal shrinkable sleeve 9 and band are isolated backing plate 10 is installed successively, concreting anchor pier 15;
D, perfusion encapsulant 13: perfusion encapsulant 13 before anchorage cable stretching, the presstressed reinforcing steel 7 of calibration tape PE cover and the insulating resistance value R of the earth reach the regulation requirement simultaneously; That is: insulaion resistance R is more than or equal to 0.1M Ω;
E, installation ground tackle: test insulating resistance value R installs ground tackle 11 in qualified back; When being installed, ground tackle 11 to guarantee the interior 5～30mm of PE sheath entering ground tackle with the presstressed reinforcing steel 7 of PE cover; Carry out the stretch-draw of presstressed reinforcing steel by relevant specification or standard-required; After opening the back locking, test the resistance value R of ground tackle 11 and the earth once more, it is qualified reaching requirement;
F, outer anchor head protective cover is installed: install ground tackle test insulaion resistance R qualified after, outer anchor head protective cover 12 can be installed, and other anchor cable is installed is successively installed until whole anchor cables.
Because the integral body of the embodiment of the invention one electric isolating and protecting anchor cable has two-layer above electric isolating and protecting; Therefore; The corrosion process of the effective observing and controlling anchor cable of the variation cable body of resistance value that can be through monitoring anchor cable body presstressed reinforcing steel; Its metering system method and apparatus all is ripe prior arts, repeats no more here.
Embodiment two:
A kind of electric isolating and protecting anchor cable with two layers of plastic bellows; Its basic structure is with embodiment one; Shown in Fig. 2-1～Fig. 2-2; This electricity isolating and protecting anchor cable basic structure comprises the anchor cable cable body and outer anchor head that fuses, and the anchor cable cable body adopts total length by the safeguard structure of prestressed plastic corrugated pipe lining, and an outside Grouting Pipe 17 that runs through guiding cap 1 is arranged in the anchor cable cable body; Adopt the isolation backing plate 10 that can make electric insulation between ground tackle and the anchor plate 15 between the ground tackle of the outer anchor head of anchor cable and the anchor plate 15, between isolation backing plate 10 and bellows 3, be perfused with encapsulant 13 with electrical insulation capability; Present embodiment and embodiment one difference are: in described bellows 3, also have 1 inner corrugated pipe 302; Centering frame 402 in outside inner corrugated pipe 302, being provided with is provided with presstressed reinforcing steel 6 that is installed on the isolating frame 5 and the presstressed reinforcing steel 7 that band PE overlaps in inner corrugated pipe 302, be with the presstressed reinforcing steel 7 of PE cover to be connected with ground tackle 11;
Present embodiment two is with another difference of embodiment one: two inside Grouting Pipe that do not run through guiding cap are arranged in the anchor cable cable body; Except that the inside Grouting Pipe I 161 that only is used for slip casting in the bellows 3, the inside Grouting Pipe II 162 that also has 1 only to be used for slip casting in the inner corrugated pipe 302 is arranged in the anchor cable cable body; The solidification material that perfusion is made up of epoxy resin 201 between bellows 3 and the guiding cap 1 fixedly is bonded to one bellows 3, guiding cap 1 and outer Grouting Pipe 17; Be perfused with the solidification material that constitutes by epoxy resin 202 in the inner corrugated pipe 302 with the whole of outer Grouting Pipe 17, inner Grouting Pipe I 161 and presstressed reinforcing steel 6 or partly fixedly be bonded to one; There is inner corrugated pipe sealing device 19 another port of inner corrugated pipe 302;
Said inner corrugated pipe sealing device 19 is made up of the forward and backward joint ring 191,192 of annular; Outside the forward and backward joint ring 191,192 sealed tube 193 is arranged; The corresponding duct that can supply outer Grouting Pipe 17, inner Grouting Pipe I 161, inner Grouting Pipe II 162 and presstressed reinforcing steel 6 to pass through is arranged on the forward and backward joint ring; In the joint ring of front and back, be perfused with encapsulant 13 and realize that (referring to Fig. 2-1, Fig. 4), said encapsulant 13 is epoxy resin or polyamide for sealing to inner corrugated pipe 302 ends.
The fabrication and installation method of the embodiment of the invention two said electric isolating and protecting anchor cables and embodiment one are said to have only the fabrication and installation method of one deck plastic film capicitor electricity isolating and protecting anchor cable roughly the same; Only at A, fabrication and installation anchor cable cable body; B, slip casting: step is different, still may further comprise the steps:
A, fabrication and installation anchor cable cable body: in the inner corrugated pipe 302 of anchor cable cable body, pack into by presstressed reinforcing steel 7, inner Grouting Pipe I 161, inner Grouting Pipe II 162 and 17 groups of anchor bundles of weaving into of outside Grouting Pipe of isolating frame 5, presstressed reinforcing steel 6, band PE cover; And seal inner corrugated pipe 302 1 ends with inner corrugated pipe sealing device 19; Infusion epoxy resin 202 is with inner corrugated pipe 302, presstressed reinforcing steel 6, inner Grouting Pipe I 161 and outside Grouting Pipe 17 bonding being integral in inner corrugated pipe 302 other ends; Then this anchor bundle is fit into 3 li of bellowss; Load onto guiding cap 1 in the end of bellows 3, infusion epoxy resin 201 is with guiding cap 1 between bellows 3 and guiding cap 1
,Bellows 3 and outside Grouting Pipe 17 synchronous bonding being integral, treat that epoxy resin 201 solidifies after, bellows 3 outsides prick with iron wire, plastics thread or powerful adhesive plaster colligation outside centering frame 401, put in order cable body straight after, whole cable body is fit in the anchor cable installing hole;
B, slip casting: carry out slip casting KJ in the anchor cable installing hole through outside Grouting Pipe 17 earlier, slip casting GJ2 in the inner corrugated pipe is carried out through inner Grouting Pipe 162 in the back, slip casting GJ1 between the outward corrugated tube in carrying out through inner Grouting Pipe I 161 again;
C, installation built-in fitting: the anchor plate 14 that spiral bar 8, thermal shrinkable sleeve 9 and band are isolated backing plate 10 is installed successively, concreting anchor pier 15;
D, perfusion encapsulant 13: perfusion encapsulant 13 before anchorage cable stretching, the presstressed reinforcing steel 7 of calibration tape PE cover and the insulating resistance value R of the earth reach the regulation requirement simultaneously; That is: insulaion resistance R is more than or equal to 0.1M Ω
E, installation ground tackle: test insulating resistance value R installs ground tackle 11 in qualified back; When being installed, ground tackle 11 to guarantee the interior 5～30mm of PE sheath entering ground tackle with the presstressed reinforcing steel 7 of PE cover; Carry out the stretch-draw of presstressed reinforcing steel by relevant specification or standard-required; After opening the back locking, test the resistance value R of ground tackle 11 and the earth once more, it is qualified reaching requirement;
F, outer anchor head protective cover is installed: install ground tackle test insulaion resistance R qualified after, outer anchor head protective cover 12 is installed, and other anchor cable is installed is successively installed until whole anchor cables.
Through the anchor cable of above-mentioned job practices production and installation, promptly constitute electric isolating and protecting anchor cable (referring to Fig. 2-2) with three layers of electric isolating and protecting system.
Among the embodiment of the invention one, the embodiment two, the presstressed reinforcing steel of said formation anchor cable cable body can be zinc-plated or apply the steel strand or the reinforcing bar of allumen, also can be composite coating presstressed reinforcing steel-epoxy steel strand or epoxy-coated reinforcement; Constitute the steel strand of anchor cable cable body or the radical of reinforcing bar and also can change as required, its supporting isolating frame 5 and centering frame 4 also and then adjustment, these all are the technology that well known to a person skilled in the art, repeat no more here.
Claims (9)
1. an electric isolating and protecting anchor cable comprises the anchor cable cable body and outer anchor head that fuse, and the anchor cable cable body adopts the total length quilt
OneThe safeguard structure of the special-purpose prestressed plastic corrugated pipe lining of bar; Bellows one end is provided with guiding cap; Be provided with the presstressed reinforcing steel that is installed on the isolating frame in the bellows; A Grouting Pipe that runs through guiding cap is arranged in the anchor cable cable body; It is characterized in that: this bellows other end is until the anchor slab of the ground tackle of outer anchor head below, and the Grouting Pipe that runs through guiding cap in the anchor cable cable body is for only being used for the outside Grouting Pipe (17) to slip casting in the anchor hole, also has one not run through guiding cap, only be used for inside Grouting Pipe I (161) to the inner slip casting of bellows (3) in the anchor cable cable body; Being perfused with the epoxy resin solidification material between bellows (3) and the guiding cap (1) fixedly is bonded to one the whole of bellows, guiding cap, outside Grouting Pipe and presstressed reinforcing steel or part; Between the ground tackle of the outer anchor head of anchor cable and the anchor plate isolation backing plate (10) that can make electric insulation between ground tackle and the anchor plate is installed, between isolation backing plate (10) and bellows, is perfused with encapsulant (13) with electrical insulation capability; The presstressed reinforcing steel of band PE cover is connected with ground tackle, and its PE sheath directly pierces into 5～30mm in the ground tackle presstressed reinforcing steel hole.
2. electric isolating and protecting anchor cable according to claim 1 is characterized in that: in described bellows (3), also have 1 inner corrugated pipe (302); Centering frame (402) in outside inner corrugated pipe (302), being provided with; In inner corrugated pipe (302), be provided with presstressed reinforcing steel (6) that is installed on the isolating frame (5) and the presstressed reinforcing steel (7) of being with the PE cover; The presstressed reinforcing steel (7) of band PE cover is connected with ground tackle (11); Except that the inside Grouting Pipe I (161) that only is used for the interior slip casting of bellows (3); Have in the anchor cable cable body to also have 1 not run through guiding cap, only be used for inside Grouting Pipe II (162) to interior the slip casting of inner corrugated pipe (302), the material that solidifies that is perfused with epoxy resin (201) formation between bellows (3) and the guiding cap (1) fixedly is bonded to one bellows (3), guiding cap (1) and outer Grouting Pipe (17); The solidification material that is perfused with epoxy resin (202) formation in the inner corrugated pipe (302) all or partly fixedly is bonded to one outer Grouting Pipe (17), inner Grouting Pipe I (161) and presstressed reinforcing steel (6); There is inner corrugated pipe sealing device (19) another port of inner corrugated pipe (302).
3. electric isolating and protecting anchor cable according to claim 2; It is characterized in that: said inner corrugated pipe sealing device (19) is made up of the forward and backward joint ring (191,192) of annular; One sealed tube (193) is arranged outside the forward and backward joint ring (191,192); The corresponding duct that can supply outer Grouting Pipe (17), inner Grouting Pipe I (161), inner Grouting Pipe II (162) and composite coating presstressed reinforcing steel (6) to pass through is arranged on the forward and backward joint ring; In the joint ring of front and back, be perfused with encapsulant and realize the sealing to inner corrugated pipe (302) end, described encapsulant is epoxy resin or polyamide.
4. according to claim 1,2 or 3 described electric isolating and protecting anchor cables, it is characterized in that: said presstressed reinforcing steel or steel strand or reinforcing bar zinc-plated or the coating allumen, or composite coating presstressed reinforcing steel, epoxy steel strand or epoxy-coated reinforcement.
5. according to claim 1,2 or 3 described electric isolating and protecting anchor cables; It is characterized in that: said isolation backing plate with electrical insulation capability be shaped as annular or tubaeform, be the isolation backing plate that adopts HDPE, LDPE, PE, PTFE, PVC and reworked material thereof to process with electrical insulation capability.
6. according to claim 1,2 or 3 described electric isolating and protecting anchor cables, it is characterized in that: the member of the electric isolating and protecting anchor cable of said formation-outer anchor head protective cover (12), bellows (3), inner corrugated pipe (302), guiding cap (1), isolating frame (5) and centering frame (4) are the plastic products that HDPE material and reworked material thereof are processed.
7. electric isolating and protecting anchor cable according to claim 1 is characterized in that: the said encapsulant with electric insulation functions (13) that is poured between isolation backing plate (10) and the bellows (3) is epoxy resin or polyamide.
8. the fabrication and installation method of electric isolating and protecting anchor cable as claimed in claim 1, it is characterized in that: it may further comprise the steps:
A, fabrication and installation anchor cable cable body: the anchor bundle of in bellows (3), packing into and weaving into by presstressed reinforcing steel (7), inner Grouting Pipe I (161) and outside Grouting Pipe (17) group of isolating frame (5), presstressed reinforcing steel (6), band PE cover; Load onto guiding cap (1) in the end of bellows (3); Infusion epoxy resin (2) is with bellows (3), presstressed reinforcing steel (6) and bonding being integral of outside Grouting Pipe (17) in guiding cap (1); After treating that epoxy resin (2) solidifies; Prick silk or powerful adhesive plaster colligation centering frame (4) in bellows (3) outside with iron wire, plastics, after the arrangement cable body is straight, whole cable body is fit in the anchor cable installing hole;
B, slip casting: carry out slip casting KJ in the anchor cable installing hole through outside Grouting Pipe (17) earlier, the interior slip casting GJ of bellows (3) is carried out through inner Grouting Pipe I (161) in the back;
C, installation built-in fitting: the anchor plate (14) that spiral bar (8), thermal shrinkable sleeve (9) and band are isolated backing plate (10) is installed successively, concreting anchor pier (15);
D, perfusion encapsulant (13): before anchorage cable stretching, pour into encapsulant (13), the presstressed reinforcing steel (7) of calibration tape PE cover and the insulating resistance value R of the earth reach the regulation requirement simultaneously; That is: insulaion resistance R is more than or equal to 0.1M Ω;
E, installation ground tackle: test insulating resistance value R installs ground tackle (11) in qualified back; When being installed, ground tackle (11) to guarantee the interior 5～30mm of PE sheath entering ground tackle with the presstressed reinforcing steel (7) of PE cover; Carry out the stretch-draw of presstressed reinforcing steel by relevant specification or standard-required; After opening the back locking, test the resistance value R of ground tackle (11) and the earth once more, it is qualified reaching requirement;
F, outer anchor head protective cover is installed: install ground tackle test insulaion resistance R qualified after, outer anchor head protective cover (12) can be installed, and other anchor cable is installed is successively installed until whole anchor cables.
9. the fabrication and installation method of electric isolating and protecting anchor cable as claimed in claim 2, it is characterized in that: it may further comprise the steps:
A, fabrication and installation anchor cable cable body: the anchor bundle of in anchor cable cable body inner corrugated pipe (302), packing into and weaving into by presstressed reinforcing steel (7), inner Grouting Pipe I (161), inner Grouting Pipe II (162) and outside Grouting Pipe (17) group of isolating frame (5), presstressed reinforcing steel (6), band PE cover; And seal inner corrugated pipe (302) one ends with inner corrugated pipe sealing device (19); Infusion epoxy resin (202) is with inner corrugated pipe (302), presstressed reinforcing steel (6), inner Grouting Pipe I (161) and bonding being integral of outside Grouting Pipe (17) in inner corrugated pipe (302) other end; Then this anchor bundle is fit into outward corrugated tube (3) lining; Load onto guiding cap (1) in the end of bellows (3); Infusion epoxy resin (201) is with guiding cap (1), bellows (3) and bonding being integral of outside Grouting Pipe (17) between bellows (3) and guiding cap (1); After treating that epoxy resin (201) solidifies; Prick centering frame (401) outside silk or the powerful adhesive plaster colligation in bellows (3) outside with iron wire, plastics, after the arrangement cable body is straight, whole cable body is fit in the anchor cable installing hole;
B, slip casting: carry out slip casting KJ in the anchor cable installing hole through outside Grouting Pipe (17) earlier; Slip casting GJ2 in the inner corrugated pipe is carried out through inner Grouting Pipe II (162) in the back, carries out slip casting GJ1 between inner corrugated pipe (302) and the bellows (3) through inner Grouting Pipe I (161) again;
C, installation built-in fitting: the anchor plate (14) that spiral bar (8), thermal shrinkable sleeve (9) and band are isolated backing plate (10) is installed successively, concreting anchor pier (15);
D, perfusion encapsulant (13): before anchorage cable stretching, pour into encapsulant (13), the presstressed reinforcing steel (7) of calibration tape PE cover and the insulating resistance value R of the earth reach the regulation requirement simultaneously; That is: insulaion resistance is more than or equal to 0.1M Ω;
E, installation ground tackle: test insulating resistance value R installs ground tackle (11) in qualified back; When being installed, ground tackle (11) to guarantee the interior 5～30mm of PE sheath entering ground tackle with the presstressed reinforcing steel (7) of PE cover; Carry out the stretch-draw of presstressed reinforcing steel by relevant specification or standard-required; After opening the back locking, test the resistance value R of ground tackle (11) and the earth once more, it is qualified reaching requirement;
F, outer anchor head protective cover is installed: install ground tackle test insulaion resistance R qualified after, outer anchor head protective cover (12) is installed, and other anchor cable is installed is successively installed until whole anchor cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102475213A CN102477740A (en) | 2011-08-24 | 2011-08-24 | Electric isolation protective anchor cable as well as making and mounting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102475213A CN102477740A (en) | 2011-08-24 | 2011-08-24 | Electric isolation protective anchor cable as well as making and mounting method thereof |
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| CN102477740A true CN102477740A (en) | 2012-05-30 |
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| CN2011102475213A Pending CN102477740A (en) | 2011-08-24 | 2011-08-24 | Electric isolation protective anchor cable as well as making and mounting method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018500A (en) * | 2014-06-28 | 2014-09-03 | 山东正元建设工程有限责任公司 | Anchor rod structure for preventing stray-current corrosion |
| CN104060609A (en) * | 2014-07-11 | 2014-09-24 | 北京建筑大学 | Method for improving adhesion of full thread fiber resin rod body and concrete through adhesion agent |
| CN104831727A (en) * | 2015-05-26 | 2015-08-12 | 中国电建集团中南勘测设计研究院有限公司 | Anchorage pier structure of lining built-in pre-stressed anchor cable and construction method of anchorage pier structure |
| CN105064359A (en) * | 2015-07-18 | 2015-11-18 | 高路恒 | Unbonded prestressed construction anchor rod |
| CN105926581A (en) * | 2016-05-27 | 2016-09-07 | 福建工程学院 | Pre-stressed anchor rod corrugated plate pile supporting and retaining structure |
| CN106835985A (en) * | 2016-12-30 | 2017-06-13 | 柳州欧维姆机械股份有限公司 | One kind electric isolution prestress anchorage system and its construction installation method |
| CN111764385A (en) * | 2019-10-08 | 2020-10-13 | 中国电建集团华东勘测设计研究院有限公司 | Adopt double-deck corrugated sleeve pipe to realize anticorrosive anchor rope structure of bilayer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266200A (en) * | 1997-03-28 | 1998-10-06 | Moriya Koki Kk | Preparation method of ground anchor, preparation method of lock bolt and these pressure-receiving structure |
| CN2692210Y (en) * | 2003-11-22 | 2005-04-13 | 柳州欧维姆机械股份有限公司 | Inner anchored segment fully sealed rock soil anchor rope |
| CN2769399Y (en) * | 2004-07-19 | 2006-04-05 | 上海建泰预应力工程有限公司 | Prestressed group anchor ground tackle |
| CN201411699Y (en) * | 2009-05-21 | 2010-02-24 | 王卫东 | Free type singe-aperture multi-anchor-head antiseptic prestressed tendon |
| CN202298615U (en) * | 2011-08-24 | 2012-07-04 | 柳州欧维姆机械股份有限公司 | Electrical isolation protective anchor cable |
-
2011
- 2011-08-24 CN CN2011102475213A patent/CN102477740A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266200A (en) * | 1997-03-28 | 1998-10-06 | Moriya Koki Kk | Preparation method of ground anchor, preparation method of lock bolt and these pressure-receiving structure |
| CN2692210Y (en) * | 2003-11-22 | 2005-04-13 | 柳州欧维姆机械股份有限公司 | Inner anchored segment fully sealed rock soil anchor rope |
| CN2769399Y (en) * | 2004-07-19 | 2006-04-05 | 上海建泰预应力工程有限公司 | Prestressed group anchor ground tackle |
| CN201411699Y (en) * | 2009-05-21 | 2010-02-24 | 王卫东 | Free type singe-aperture multi-anchor-head antiseptic prestressed tendon |
| CN202298615U (en) * | 2011-08-24 | 2012-07-04 | 柳州欧维姆机械股份有限公司 | Electrical isolation protective anchor cable |
Non-Patent Citations (3)
| Title |
|---|
| 刘玉堂等: "常用预应力锚索的结构和特点", 《预应力技术》 * |
| 杨顺臻: "压力分散型预应力锚索桩板墙结构体系及应用研究", 《中国优秀硕士论文全文数据库》 * |
| 翟才旺: "预应力锚索在小浪底工程高边坡加固中的应用", 《水利水电快报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018500A (en) * | 2014-06-28 | 2014-09-03 | 山东正元建设工程有限责任公司 | Anchor rod structure for preventing stray-current corrosion |
| CN104018500B (en) * | 2014-06-28 | 2016-05-04 | 山东正元建设工程有限责任公司 | Prevent the anchor structure of stray current corrosion |
| CN104060609A (en) * | 2014-07-11 | 2014-09-24 | 北京建筑大学 | Method for improving adhesion of full thread fiber resin rod body and concrete through adhesion agent |
| CN104831727A (en) * | 2015-05-26 | 2015-08-12 | 中国电建集团中南勘测设计研究院有限公司 | Anchorage pier structure of lining built-in pre-stressed anchor cable and construction method of anchorage pier structure |
| CN104831727B (en) * | 2015-05-26 | 2016-08-24 | 中国电建集团中南勘测设计研究院有限公司 | The anchor pier structure of a kind of lining cutting built-in type prestress anchorage cable and construction method thereof |
| CN105064359A (en) * | 2015-07-18 | 2015-11-18 | 高路恒 | Unbonded prestressed construction anchor rod |
| CN105926581A (en) * | 2016-05-27 | 2016-09-07 | 福建工程学院 | Pre-stressed anchor rod corrugated plate pile supporting and retaining structure |
| CN106835985A (en) * | 2016-12-30 | 2017-06-13 | 柳州欧维姆机械股份有限公司 | One kind electric isolution prestress anchorage system and its construction installation method |
| CN106835985B (en) * | 2016-12-30 | 2019-05-24 | 柳州欧维姆机械股份有限公司 | A kind of electric isolution prestress anchorage system and its construction installation method |
| CN111764385A (en) * | 2019-10-08 | 2020-10-13 | 中国电建集团华东勘测设计研究院有限公司 | Adopt double-deck corrugated sleeve pipe to realize anticorrosive anchor rope structure of bilayer |
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Application publication date: 20120530 |