CN102535336A - Composite prestressed bar finished guy cable and manufacturing method thereof - Google Patents
Composite prestressed bar finished guy cable and manufacturing method thereof Download PDFInfo
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- CN102535336A CN102535336A CN2012100718164A CN201210071816A CN102535336A CN 102535336 A CN102535336 A CN 102535336A CN 2012100718164 A CN2012100718164 A CN 2012100718164A CN 201210071816 A CN201210071816 A CN 201210071816A CN 102535336 A CN102535336 A CN 102535336A
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Abstract
The invention relates to a composite prestressed bar finished guy cable. The guy cable comprises a composite prestressed bar cable body consisting of a plurality of single-stranded steel stranded wires and a plurality of guy cable steel wires, and two anchoring pieces positioned at the two ends of the cable body, wherein each anchoring piece comprises an anchoring unit and a sealing unit; the anchoring unit comprises an end cover, a conical sleeve, an anchor plate, a nut, an anchor cup and a restraining ring; a plurality of anchor holes are formed in the anchor plate; the conical sleeve is arranged on a central wire at the end of each single-stranded steel stranded wire of the cable body of the finished guy cable; the end of the central wire is provided with an upset head; side wires are positioned on the outer side of the conical sleeve and conically distributed in a scattered mode; the side wires and the conical anchor holes of the anchor plate form the single-stranded steel stranded wire anchoring unit; the guy cable steel wires are uniformly distributed at the peripheries of the single-stranded steel stranded wires and penetrate through the anchor plate; the ends of the guy cable steel wires are provided with upset heads; an epoxy filler is poured into the anchor cup; and the single-stranded steel stranded wires and the guy cable steel wires are anchored after the epoxy filler is cured. The guy cable is prefabricated in a factory, has high sealing performance and corrosion resistance, is economic and practical, and is easy to construct, install and tension, and the breaking force of the guy cable can be accurately adjusted according to a structural requirement.
Description
Technical field
The present invention relates to the drag-line that a kind of bridge construction and large-scale construction engineering adopt, especially a kind of composite prestressed muscle finished product drag-line and preparation method thereof.
Background technology
In recent years, the drag-line form that adopts of domestic bridge and heavy construction mainly contained: chill casting anchor wire digging line, hot-cast anchor wire digging line, intermediate plate anchor guy of twisted steel cable and steel strand integral bundle extruding finished product drag-line.Wherein, guy of twisted steel cable is compared with wire digging line, and its advantage and deficiency are respectively arranged, and has bigger advantage at aspect guy of twisted steel cable such as tensile strength and antiseptic properties than wire digging line, increasing being applied among the various engineerings; There is following weak point in existing form drag-line:
1. chill casting anchor and the used intensity of steel wire of hot-cast anchor rope are >=1670MPa, compare, and the used steel strand intensity of guy of twisted steel cable is >=1860MPa that its tensile strength is higher.
2. chill casting anchor and hot-cast anchor rope cable body are parallel wire unit; Steel wire and anchor cup adopt the heating cure of epoxy iron sand to become whole (see figure 7); Outer compacted envelope of cable body and antiseptic property be sheath preferably; Yet owing to do not have spacer between each steel wire of steel tendon, outer protective sleeve is prone to extend to the corrosion in whole steel tendon cross section after causing the corrosion of part steel wire if any breakage.Normally put in order bundle fracture suddenly if fracture of wire takes place, very big to bridge collapse, consequence is serious and very difficult repairs.
3. for the drag-line of nominal Fracture Force below 4000kN; Guy of twisted steel cable Suo Li jumps bigger; Promptly increase by 1 steel strand nominal Fracture Force and just increase 260kN, and the nominal Fracture Force that increases a wire digging line only increases 71.6kN (is that 1860MPa calculates by diameter phi 7 intensity).
4. clip type steel strand group anchor cable (referring to patent ZL92108579.6); Usually carry out each root steel strand of cutting, installation and stretch-draw of steel strand at the construction field (site); After finishing, single tendon stretch needs drag-line is carried out whole Suo Li adjustment; Construction sequence is loaded down with trivial details, and very high to the quality control requirement of work progress.
5. clip type steel strand group anchor cable cable body needs the certain intracavity space of reservation by anticorrosion and sealing performance protecting pipe parcel preferably because of steel strand are installed, so the protecting pipe external diameter is bigger, is subject to the influence of rain wind induced vibration.
6. clip type steel strand group anchor cable two ends anchor head carries out preservative treatment after needing stretching construction to finish just now, and the anticorrosive work difficulty is bigger.
7. steel strand integral bundle extruding drag-line needs after the preparation of the extruding of accomplishing anchor head and whole drag-line, just can carry out the processing of anchor head screw thread, thereby the processing of screw thread is high to equipment requirements, and difficulty of processing is big, and the production cycle is longer.
Summary of the invention
The object of the present invention is to provide a kind of a kind of composite prestressed muscle finished product drag-line that is applicable to that bridge construction and large-scale construction engineering are used; This finished product drag-line had both had the advantage of chill casting anchor and hot-cast anchor wire digging line; Have again guy of twisted steel cable at aspects such as tensile strength and antiseptic properties than the better advantage of wire digging line, and can realize that drag-line design Suo Li disposes more accurately; Solved the problems referred to above that existing drag-line exists preferably, the preparation method of this drag-line is provided simultaneously.
The technical scheme that addresses the above problem is: a kind of composite prestressed muscle finished product drag-line; Comprise cable body and two anchoring pieces that are positioned at the cable body two ends, described cable body is the composite prestressed muscle finished product drag-line cable body that comprises that n root sub-thread steel strand and p root drag-line steel wire constitute; Each anchoring piece comprises anchoring unit and sealing unit;
Said anchoring unit comprises end cap, tapered sleeve, anchor slab, nut, anchor cup and constraint circle; Be useful on the taper anchor hole of anchoring sub-thread steel strand and the through hole that is used for anchoring drag-line steel wire on the anchor slab; After n root sub-thread steel strand and the p root drag-line steel wire that comprises the composite prestressed muscle finished product drag-line cable body that n root sub-thread steel strand and p root drag-line steel wire constitute passes the anchor cup; Each sub-thread steel strand penetrates respectively in the corresponding anchor hole of anchor slab; Each root sub-thread steel strand in the ground tackle are to be formed by the twisting of m root steel wire, and the structure of each root sub-thread steel strand in anchor hole is: steel strand termination central hair is equipped with a tapered sleeve, and the central hair termination is processed into heading; All the other m-1 Gen Biansi are positioned at the tapered sleeve tapered dispersed and distributed in the outside and form sub-thread steel strand anchoring unit with anchor slab anchoring cone hole; Realization is fixing to a sub-thread steel strand termination, and P root drag-line steel wire 3 passes anchor slab 7, is evenly distributed in the periphery of n sub-thread steel strand anchoring unit; The termination of drag-line steel wire is processed into heading; There is end cap anchor cup termination, and anchor cup inside is cast with the epoxies filler, and the epoxies filler solidifies the back accomplishes the anchoring to n root sub-thread steel strand and p root drag-line steel wire;
Said sealing unit comprises sealing drum, seal and the hold-down ring that connects successively; One end of sealing drum is connected with the constraint circle of an anchoring unit; Seal is positioned at the other end of sealing drum and is connected with hold-down ring, in sealing drum promptly: be perfused with anticorrosive packing in the space of constraint circle, seal and sealing drum formation;
The span of above-mentioned m, n, p is: m is 3,4,5,6, any number among 7,9; N is 2,3,4,5 ... Any number among 350, p is 2,3,4,5 ... Any number among 200.
Its further technical scheme is: each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body that the said n of comprising root sub-thread steel strand and p root drag-line steel wire constitute have internal layer PE sheath outward; Periphery with n root sub-thread steel strand of internal layer PE sheath is distributed with p root drag-line steel wire equably and is wrapped up by the high-strength polyester band; Be extruded with outer PE sheath outside it, forming cable body is by isolating a kind of composite prestressed muscle finished product drag-line cable body that anticorrosive steel strand and steel wire constitute.
Its further technical scheme or: each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body that the said n of comprising root sub-thread steel strand and p root drag-line steel wire constitute are PC steel strand; The periphery of n root sub-thread steel strand is distributed with p root drag-line steel wire equably and is wrapped up by the high-strength polyester band; Be extruded with outer PE sheath outside it; Be perfused with anti-corrosion material in it, forming cable body is the composite prestressed muscle finished product drag-line cable body that PC steel strand and steel wire constitute.
Its further technical scheme be: the epoxies filler of the inner cast of said anchor cup is a chill casting formula epoxy iron sand; The anticorrosive packing that in sealing drum, pours into is an expansion rate less than 2 times polyurethane.
Another related art scheme of the present invention is: the preparation method of above-mentioned composite prestressed muscle finished product drag-line, and its manufacturing process may further comprise the steps:
The sheath that A. will comprise composite prestressed muscle finished product drag-line cable body one end that n root sub-thread steel strand and p root drag-line steel wire constitute removes a segment length, cleans out each root sub-thread steel strand surface;
B. n root sub-thread steel strand after cleaning out and p root drag-line steel wire pass the anchor cup; Each root sub-thread steel strand penetrates respectively in the corresponding anchor hole of anchor slab; Outside the core wire of each root sub-thread steel strand, put a tapered sleeve; And this core wire is carried out heading handle the formation heading, all the other m-1 Gen Biansi are positioned at the tapered sleeve tapered dispersed and distributed in the outside and form sub-thread steel strand anchoring unit with anchor slab anchoring cone hole, and realization is fixing to a sub-thread steel strand termination;
C. repeating step B forms n sub-thread steel strand anchoring unit until n root sub-thread steel strand are handled fully;
D. the P root drag-line steel wire 3 with cable body passes anchor slab 7, is arranged in the periphery of n sub-thread steel strand anchoring unit equably, and the termination of drag-line steel wire is processed into heading 301;
E. the end cap of screwing on is poured into a mould epoxy filler in anchor cup inner chamber, the constraint circle is installed, and waits for and solidifying, treat epoxy filler solidify after with nut through on the screw thread outside the anchor cup, drag-line is carried out single tension;
F., sealing drum, seal and hold-down ring are installed successively, to the inner perfusion of sealing drum anticorrosive packing; Solidify the back and constitute an end anchoring piece II;
G. the other end to the cable body of composite prestressed muscle finished product drag-line repeats to implement above-mentioned steps A-F, forms other end anchoring piece; Comprise that cable body and the composite prestressed muscle finished product drag-line that two anchoring pieces that are positioned at the cable body two ends constitute complete;
The span of above-mentioned m, n and p is: m is 3,4,5,6, any number among 7,9; N is 2,3,4,5 ... Any number among 350, p is 2,3,4,5 ... Any number among 200.
Its further technical scheme is: the steel strand in the said formation composite prestressed muscle finished product drag-line cable body are to isolate anticorrosive steel strand, comprise that each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body that n root sub-thread steel strand and p root drag-line steel wire constitute have internal layer PE sheath outward; Periphery with n root sub-thread steel strand of internal layer PE sheath is distributed with p root drag-line steel wire equably and is wrapped up by the high-strength polyester band; Be extruded with outer PE sheath outside it; In steps A. in, said " sheath " that the sheath of composite prestressed muscle finished product drag-line cable body one end is removed in the segment length is meant outer PE sheath and internal layer PE sheath.
Its further technical scheme or: each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body that the said n of comprising root sub-thread steel strand and p root drag-line steel wire constitute are PC steel strand; The periphery of n root sub-thread steel strand is distributed with p root drag-line steel wire equably and is wrapped up by the high-strength polyester band; Be extruded with outer PE sheath outside it; Be perfused with anti-corrosion material in it; In steps A. in, said " sheath " that the sheath of composite prestressed muscle finished product drag-line cable body one end is removed in the segment length is meant outer PE sheath.
Composite prestressed muscle finished product drag-line of the present invention and preparation method thereof has following beneficial effect:
Because the present invention's composite prestressed muscle finished product drag-line comprises cable body and the form of structure that is positioned at two anchoring pieces at cable body two ends, described cable body is to comprise multiply sub-thread steel strand and the many composite prestressed muscle finished product rustling sound bodies that the drag-line steel wire constitutes; Combining cable body is the advantage of chill casting anchor and hot-cast anchor rope and the clip type guiding principle twisted wire drag-line and the steel strand integral bundle extruding drag-line of steel wire formation, and therefore, the composite prestressed muscle finished product drag-line of invention is compared with existing drag-line, has following beneficial effect:
(1) compare with steel wire finished product Suo Lasuo: because the steel strand intensity rank is higher than steel wire, under identical Suo Li condition, the light 5%-10% of guy of twisted steel cable weight ratio wire digging line; Realized that the isolation between the presstressed reinforcing steel is anticorrosion, antiseptic effect is better.
(2) compare with the intermediate plate anchor guy of twisted steel cable of field fabrication, following beneficial effect arranged:
1. after the present invention's composite prestressed muscle finished product drag-line is transported to the job site, directly hang cable stretching, removed cutting steel strand and operations such as single installation and stretch-draw from, simplified construction sequence, shortened construction period.
2. this finished product drag-line cable body form is an outer crowded outer PE sheath behind the composite prestressed muscle wrapping bag, and the sheath external diameter is less, effectively raises drag-line wind resistance rain exciting ability; Every sub-thread steel strand are isolated anticorrosion, avoid that principal rod receives corrosion failure simultaneously in the drag-line; Because multiply steel strand neighboring adds steel wire, make the drag-line cross section more near circular simultaneously, outer PE jacket thickness is more even, avoids outer PE sheath unbalance stress stress cracking.
3. steel strand adopt the anchor slab location in ground tackle; Composite prestressed muscle finished product drag-line cable body adopts reperfusion mode to bond multiply sub-thread steel strand and many steel wires form anchoring, becomes an anchoring whole; Steel strand and steel cord end are wrapped up by epoxies filler and anticorrosion polyurethane filler fully, after the epoxies filler solidifies, strengthen in the anchor cup bond stress between the epoxies filler and steel strand and steel wire through stretching mode; Only need to carry out preservative treatment to the anchor head external surface after construction stretching finishes and get final product, anticorrosive work is simple and efficient.
4. original intermediate plate anchor guy of twisted steel cable, steel strand of every increase, disrumpent feelings Suo Li increases 260kN, and presstressed reinforcing steel composite finished product Suo Ze of the present invention can accurately adjust disrumpent feelings Suo Li by structural requirement, and is economical and practical.
(3) compare with steel strand integral bundle extruding finished product drag-line: steel strand of the extruding every increase of drag-line, disrumpent feelings Suo Li increases 260kN, and composite prestressed muscle finished product drag-line of the present invention then can accurately be adjusted disrumpent feelings Suo Li by structural requirement, and is economical and practical; And two ends ground tackle part independently processes, so anchor head screw thread difficulty of processing reduces, when producing in enormous quantities, shortened the process-cycle greatly.
Owing to have above-mentioned advantage; Composite prestressed muscle finished product drag-line of the present invention can make as required various different sizes by multiply steel strand and the many composite prestressed muscle finished product drag-lines that the drag-line steel wire constitutes, be applicable to that bridge construction and large-scale construction engineering adopt.
Below in conjunction with accompanying drawing and embodiment the technical characterictic of a kind of composite prestressed muscle finished product drag-line of the present invention and preparation method thereof is described further.
Description of drawings
Fig. 1: the structural representation of a kind of composite prestressed muscle of the present invention finished product drag-line (only mark an end anchoring piece, other end anchoring piece structure is identical, omits);
The A portion enlarged drawing of Fig. 2: Fig. 1;
Fig. 3: anchor slab structural representation (sectional view);
Fig. 4: tapered sleeve structural representation (sectional view);
Fig. 5: isolate the cable body structural representation (cross-sectional view) that anticorrosive steel strand and steel wire constitute;
Fig. 6: the cable body structural representation (cross-sectional view) that PC steel strand and steel wire constitute;
Fig. 7: chill casting anchor and hot-cast anchor rope cable body cable body structural representation that parallel wire unit constitutes;
The parallel wire unit drag-line cable body cross-sectional structure sketch map of Fig. 8: Fig. 7.
Among the figure:
I, I 01, I 02-cable body, II-anchoring piece, II 01-anchoring unit, II 02-sealing unit;
The outer PE sheath of 1-, 2-internal layer PE sheath, 3-drag-line steel wire, the heading of 301-drag-line steel wire, 4-sub-thread steel strand, 401-central hair; The heading of 4011-central hair, 402-limit silk, 5-end cap, 6-tapered sleeve, 7-anchor slab, 701-taper anchor hole; The 8-nut, 9-anchor cup, 10-epoxies filler, 11-retrains circle, 12-anticorrosive packing, 13-sealing drum; The 14-seal, hold-down ring 15,16-high-strength polyester band, 17-anti-corrosion material, 18-parallel steel wire.
The specific embodiment
Embodiment one:
By isolating a kind of composite prestressed muscle finished product drag-line that anticorrosive steel strand constitutes; Comprise cable body I and two anchoring piece II that are positioned at cable body I two ends, described cable body I is to comprise 7 sub-thread steel strand 4 and 6 composite prestressed muscle finished product rustling sound bodies that drag-line steel wire 3 constitutes; Each anchoring piece comprises anchoring unit II 01 and sealing unit II 02 (referring to Fig. 1);
Said anchoring unit II 01 comprises end cap 5, tapered sleeve 6, anchor slab 7, nut 8, anchor cup 9 and constraint circle 11; A plurality of through holes that are used for the taper anchor hole 701 of anchoring sub-thread steel strand and are used for anchoring drag-line steel wire 3 are arranged on the anchor slab 7; After 7 sub-thread steel strand 4 of formation composite prestressed muscle finished product drag-line cable body I and 6 drag-line steel wires 3 pass anchor cup 9; Each sub-thread steel strand penetrates respectively in the corresponding taper anchor hole 701 of anchor slab 7; Each root sub-thread steel strand 4 in the ground tackle are to be formed by 7 steel wire twistings, and the structure of each root sub-thread steel strand 4 in the taper anchor hole is: sub-thread steel strand 4 termination central hairs 401 are equipped with a tapered sleeve 6, and the central hair termination is processed into heading 4011; All the other 6 limit silks 402 are positioned at the tapered dispersed and distributed in tapered sleeve 6 outsides and form sub-thread steel strand anchoring unit with the taper anchor hole of anchor slab 7 701; Realization is fixing to a sub-thread steel strand termination, and 6 drag-line steel wires 3 pass anchor slab 7, are arranged in the periphery of 7 sub-thread steel strand anchoring unit equably; The termination of drag-line steel wire 3 is processed into heading 301 (referring to Fig. 2); There is end cap 5 anchor cup 9 terminations, and anchor cup 9 inside are cast with epoxies filler 10, are formed into the anchoring to 7 sub-thread steel strand 4 and 6 drag-line steel wires 3 after epoxies filler 10 solidifies; Through bonding between epoxies fillers and steel strand 4 and the steel wire 3 in the stretching mode enhancing anchor cup 9; Nut 7 through on the screw thread outside anchor cup 8, effect is construction stretching stay guy two ends, the back anchoring piece that finishes, and is delivered in the structure stressed.
Said sealing unit II 02 comprises sealing drum 13, seal 14 and the hold-down ring 15 that connects successively; One end of sealing drum 13 is connected with the constraint circle 11 of anchoring unit II 01; Seal 14 is positioned at the other end of sealing drum 13 and is connected with hold-down ring 15, in sealing drum 13 promptly: be perfused with anticorrosive packing 12 in the space that constraint circle 11, sealing drum 13 and seal 14 form.
In the present embodiment, each root sub-thread steel strand of said formation composite prestressed muscle finished product drag-line cable body I have internal layer PE sheath 2 outward; Periphery with 7 strands of steel strand of internal layer PE sheath is distributed with 6 drag-line steel wires 3 and equably by high-strength polyester band 16 parcels; Be extruded with outer PE sheath 1 outside it, forming the cable body I is a kind of composite prestressed muscle finished product drag-line cable body I 01 (referring to the Fig. 5) that isolates anticorrosive steel strand and drag-line steel wire formation.
A kind of conversion as the embodiment of the invention; Each root sub-thread steel strand of said formation composite prestressed muscle finished product drag-line cable body I can be the PC steel strand; The periphery of 7 strands of PC steel strand 4 is distributed with 6 drag-line steel wires 3 equably and is wrapped up by high-strength polyester band 16; Be extruded with outer PE sheath 1 outside it, be perfused with anti-corrosion material 17 in it, forming the cable body I is composite prestressed muscle finished product drag-line cable body I 02 (referring to Fig. 6) that PC steel strand and drag-line steel wire constitute; Said anti-corrosion material 17 is grease or wax.
As a kind of conversion of the embodiment of the invention, the number of share of stock that constitutes the sub-thread steel strand 4 of said composite prestressed muscle finished product drag-line cable body I can increase or be reduced to the n thigh, and each strand steel strand can be made up of m root steel wire; The span of m, n is: m is 3; 4,5,6; Any number among 7,9; N is 2,3,4,5 ..., any number among 350; The quantity that is evenly distributed in the p root drag-line steel wire 3 of n root sub-thread steel strand 4 peripheries is decided by space quantity and size that high-strength polyester band 16 parcel backs produce according to the multiply steel strand, and p is 2,3, and 4,5,6,7 ... Any number among 200.
The principle of composite prestressed muscle finished product anchor-hold of the present invention is: sub-thread steel strand 4 stressed backs are through installing the end that tapered sleeve 6 and heading swell; Power is delivered to the cone of anchor slab 7 and epoxies filler 10 compositions; Be delivered to anchor cup 9 at last; Epoxies filler 10 has formed bond stress with n root sub-thread steel strand 4 and p root drag-line steel wire 3 under squeezing action, finally reach the purpose of the composite prestressed muscle finished product drag-line cable body I of anchoring n root sub-thread steel strand and p root drag-line steel wire formation.
Embodiment two:
The preparation method of embodiment one described a kind of composite prestressed muscle finished product drag-line.Its manufacturing process may further comprise the steps:
The sheath that A. will comprise composite prestressed muscle finished product drag-line cable body I one end that n root sub-thread steel strand 4 and p root drag-line steel wire 3 constitute removes a segment length, cleans out each root sub-thread steel strand 4 surface;
B. the n root sub-thread steel strand 4 after will cleaning out pass anchor cup 9 with p root drag-line steel wire 3; Each root sub-thread steel strand 4 penetrates respectively in the taper anchor hole 701 of anchor slab 7; Outside the central hair 401 of each root sub-thread steel strand 4, put a tapered sleeve 6; And this central hair is carried out heading handle to form heading 4011, all the other m-1 Gen Biansi are positioned at the tapered dispersed and distributed in tapered sleeve 6 outsides and form sub-thread steel strand anchoring unit with the anchoring cone hole of anchor slab 7, realize fixing to sub-thread steel strand 4 terminations;
C. repeating step B forms n sub-thread steel strand anchoring unit until n root sub-thread steel strand 4 are handled fully;
D. the P root drag-line steel wire 3 with cable body passes anchor slab 7, is arranged in the periphery of n sub-thread steel strand anchoring unit equably, and the termination of drag-line steel wire is processed into heading 301;
E. the end cap of screwing on is poured into a mould epoxy filler in anchor cup inner chamber, the constraint circle is installed, and waits for and solidifying, treat epoxy filler solidify after with nut through on the screw thread outside the anchor cup, drag-line is carried out single tension;
F., sealing drum, seal and hold-down ring are installed successively, to the inner perfusion of sealing drum anticorrosive packing; Solidify the back and constitute an end anchoring piece II; "
G. the other end to the cable body I of composite prestressed muscle finished product drag-line repeats to implement above-mentioned steps A-F, forms other end anchoring piece II; Comprise that cable body I and the composite prestressed muscle finished product drag-line that two anchoring piece II that are positioned at cable body I two ends constitute complete;
The span of above-mentioned m, n and p is: m is 3,4,5,6, any number among 7,9; N is 2,3,4,5 ... Any number among 350, p is 2,3,4,5 ... Any number among 200.
Steel strand in the cable body I of said formation composite prestressed muscle finished product drag-line are to isolate anticorrosive steel strand, comprise that the every sub-thread steel strand 4 of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body I that n root sub-thread steel strand 4 and p root drag-line steel wire 3 constitute have internal layer PE sheath 2 outward; Periphery with n root sub-thread steel strand of internal layer PE sheath is distributed with p root drag-line steel wire 3 and equably by high-strength polyester band 16 parcels; Be extruded with outer PE sheath 1 outside it; In steps A. in, " sheath " that the said sheath that will comprise composite prestressed muscle finished product drag-line cable body I one end that n root sub-thread steel strand 4 and p root drag-line steel wire 3 constitute removes in the segment length is meant outer PE sheath 1 and internal layer PE sheath 2.
When each root sub-thread steel strand of the n root sub-thread steel strand of said composite prestressed muscle finished product drag-line cable body I are PC steel strand; The periphery of n root sub-thread steel strand is distributed with p root drag-line steel wire 3 equably and is wrapped up by high-strength polyester band 16; Be perfused with anti-corrosion material 17 in it; Be extruded with outer PE sheath 1 outside the high-strength polyester band 16, in steps A. in, said " sheath " that the sheath of composite prestressed muscle finished product drag-line cable body I one end is removed in the segment length is meant outer PE sheath 1.
In the various embodiments of the present invention, the epoxies filler 10 of said anchor cup 9 inner cast is chill casting formula epoxy iron sand; The anticorrosive packing 12 of perfusion is an expansion rate less than 2 times polyurethane in sealing drum 13.
In the various embodiments of the present invention, said outer PE sheath 1 generally adopts the HDPE sheath with internal layer PE sheath.
Claims (8)
1. composite prestressed muscle finished product drag-line; Comprise cable body (I) and be positioned at two anchoring pieces (II) at cable body (I) two ends, it is characterized in that: described cable body (I) is the composite prestressed muscle finished product drag-line cable body that comprises that n root sub-thread steel strand (4) and p root drag-line steel wire (3) constitute; Each anchoring piece comprises anchoring unit (II 01) and sealing unit (II 02);
Said anchoring unit (II 01) comprises end cap (5), tapered sleeve (6), anchor slab (7), nut (8), anchor cup (9) and constraint circle (11); Be useful on the taper anchor hole (701) of anchoring sub-thread steel strand and the through hole that is used for anchoring drag-line steel wire (3) on the anchor slab (7); After the n root sub-thread steel strand (4) that comprise the composite prestressed muscle finished product drag-line cable body (I) that n root sub-thread steel strand (4) and p root drag-line steel wire (3) constitute pass anchor cup (9) with p root drag-line steel wire (3); Each sub-thread steel strand penetrates respectively in the taper anchor hole (701) of anchor slab (7); Each root sub-thread steel strand in the ground tackle are to be formed by the twisting of m root steel wire; The structure of each root sub-thread steel strand in anchor hole is: steel strand (4) termination central hairs (401) are equipped with a tapered sleeve (6); The central hair termination is processed into heading (4011), and all the other m-1 Gen Biansi (402) are positioned at the tapered dispersed and distributed in tapered sleeve (6) outside and form sub-thread steel strand anchoring unit with the taper anchor hole (701) of anchor slab, realizes fixing to a sub-thread steel strand termination; P root drag-line steel wire (3) passes anchor slab (7); Be evenly distributed in the periphery of n sub-thread steel strand anchoring unit, the termination of drag-line steel wire is processed into heading, and there is end cap (5) anchor cup (9) termination; Anchor cup (9) inside is cast with epoxies filler (10), and epoxies filler (10) solidifies the back accomplishes the anchoring to n root sub-thread steel strand (4) and p root drag-line steel wire (3);
Said sealing unit (II 02) comprises sealing drum (13), seal (14) and the hold-down ring (15) that connects successively; One end of sealing drum (13) is connected with the constraint circle (11) of anchoring unit (II 01); Seal (14) is positioned at the other end of sealing drum (13) and is connected with hold-down ring (15), in sealing drum (13) promptly: be perfused with anticorrosive packing (12) in the space that constraint circle (11), seal (14) and sealing drum (13) form;
The span of above-mentioned m, n, p is: m is 3,4,5,6, any number among 7,9; N is 2,3,4,5 ... Any number among 350, p is 2,3,4,5 ... Any number among 200.
2. a kind of composite prestressed muscle finished product drag-line according to claim 1 is characterized in that: the said n of comprising root sub-thread steel strand (4) have internal layer PE sheath (2) outward with each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body (I) of p root drag-line steel wire (3) formation; Periphery with n root sub-thread steel strand of internal layer PE sheath is distributed with p root drag-line steel wire (3) equably and is wrapped up by high-strength polyester band (16); Its outer outer PE sheath (1) that is extruded with, forming cable body (I) is by isolating a kind of composite prestressed muscle finished product drag-line cable body (I 01) that anticorrosive steel strand and steel wire constitute.
3. a kind of composite prestressed muscle finished product drag-line according to claim 1; It is characterized in that: the said n of comprising root sub-thread steel strand (4) are PC steel strand with each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body (I) of p root drag-line steel wire (3) formation; The periphery of n root sub-thread steel strand is distributed with p root drag-line steel wire (3) equably and is wrapped up by high-strength polyester band (16); Be perfused with anti-corrosion material (17) in it; The outer outer PE sheath (1) that is extruded with of high-strength polyester band (16), forming cable body (I) is the composite prestressed muscle finished product drag-line cable body (I 02) that PC steel strand and steel wire constitute.
4. according to claim 1,2 or 3 described a kind of composite prestressed muscle finished product drag-lines, it is characterized in that: the epoxies filler (10) of the inner cast of said anchor cup (9) is a chill casting formula epoxy iron sand; The anticorrosive packing (12) of perfusion is an expansion rate less than 2 times polyurethane in sealing drum (13).
5. the preparation method of a kind of composite prestressed muscle finished product drag-line according to claim 1, it is characterized in that: its manufacturing process may further comprise the steps:
The sheath that A. will comprise composite prestressed muscle finished product drag-line cable body (I) end that n root sub-thread steel strand (4) and p root drag-line steel wire (3) constitute removes a segment length, cleans out each root sub-thread steel strand (4) surface;
B. n root sub-thread steel strand (4) and p root drag-line steel wire (3) after cleaning out pass anchor cup (9); Each root sub-thread steel strand (4) penetrates respectively in the corresponding anchor hole of anchor slab (7); Outside the central hair (401) of each root sub-thread steel strand (4), put a tapered sleeve (6); And this core wire is carried out heading handle formation heading (4011); All the other m-1 Gen Biansi are positioned at the tapered dispersed and distributed in tapered sleeve (6) outside and form sub-thread steel strand anchoring unit with the anchoring cone hole of anchor slab (7), realize fixing to a sub-thread steel strand termination;
C. repeating step B forms n sub-thread steel strand anchoring unit until n root sub-thread steel strand (4) are handled fully;
D. the P root drag-line steel wire (3) with cable body passes anchor slab (7), is arranged in the periphery of n sub-thread steel strand anchoring unit equably, and the termination of drag-line steel wire is processed into heading (301);
E. the end cap of screwing on is poured into a mould epoxy filler in anchor cup inner chamber, the constraint circle is installed, and waits for and solidifying, treat epoxy filler solidify after with nut through on the screw thread outside the anchor cup, drag-line is carried out single tension;
F., sealing drum, seal and hold-down ring are installed successively, to the inner perfusion of sealing drum anticorrosive packing (12); Solidify the back and constitute an end anchoring piece (II); "
G. the other end to the cable body (I) of composite prestressed muscle finished product drag-line repeats to implement above-mentioned steps A-F, forms other end anchoring piece (II); Comprise cable body (I) and be positioned at the composite prestressed muscle finished product drag-line that two anchoring pieces (II) at cable body (I) two ends constitute and complete;
The span of above-mentioned m, n and p is: m is 3,4,5,6, any number among 7,9; N is 2,3,4,5 ... Any number among 350, p is 2,3,4,5 ... Any number among 200.
6. the preparation method of a kind of composite prestressed muscle finished product drag-line according to claim 5; It is characterized in that: the steel strand in the said formation composite prestressed muscle finished product drag-line cable body (I) are to isolate anticorrosive steel strand, comprise that each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body (I) that n root sub-thread steel strand (4) and p root drag-line steel wire (3) constitute have internal layer PE sheath (2) outward; Periphery with n root sub-thread steel strand of internal layer PE sheath is distributed with p root drag-line steel wire (3) equably and is wrapped up by high-strength polyester band (16); Its outer outer PE sheath (1) that is extruded with; In steps A. in, " sheath " that said sheath with composite prestressed muscle finished product drag-line cable body (I) end removes in the segment length is meant outer PE sheath (1) and internal layer PE sheath (2).
7. the preparation method of a kind of composite prestressed muscle finished product drag-line according to claim 5; It is characterized in that: the said n of comprising root sub-thread steel strand (4) are PC steel strand with each root sub-thread steel strand of the n root sub-thread steel strand of the composite prestressed muscle finished product drag-line cable body (I) of p root drag-line steel wire (3) formation; The periphery of n root sub-thread steel strand is distributed with p root drag-line steel wire (3) equably and is wrapped up by high-strength polyester band (16); Be perfused with anti-corrosion material (17) in it; The outer outer PE sheath (1) that is extruded with of high-strength polyester band (16); In steps A. in, " sheath " that said sheath with composite prestressed muscle finished product drag-line cable body (I) end removes in the segment length is meant outer PE sheath (1).
8. according to claim 5,6 or 7 described a kind of composite prestressed muscle finished product drag-lines, it is characterized in that: the epoxies filler (10) of the inner cast of said anchor cup (9) is a chill casting formula epoxy iron sand; The anticorrosive packing (12) of perfusion is an expansion rate less than 2 times polyurethane in sealing drum (13).
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| CN110725547A (en) * | 2019-10-17 | 2020-01-24 | 柳州欧维姆机械股份有限公司 | Compact steel strand inhaul cable and manufacturing method thereof |
| CN110725547B (en) * | 2019-10-17 | 2023-08-11 | 柳州欧维姆机械股份有限公司 | Compact steel strand inhaul cable and manufacturing method thereof |
| CN112376803A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | FRP (fiber reinforced plastic) steel strand composite rib anchorage device and anchoring method |
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Inventor after: Huang Ying Inventor after: Zhu Wanxu Inventor after: Jiang Peng Inventor after: Zhou Hongmei Inventor after: Xie Xiongwen Inventor after: Pan Jianfei Inventor after: Zeng Xianmin Inventor after: Huang Jianguo Inventor before: Huang Ying Inventor before: Zhu Wanxu Inventor before: Zhou Hongmei Inventor before: Xie Xiongwen Inventor before: Pan Jianfei Inventor before: Zeng Xianming Inventor before: Huang Jianguo |
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Effective date of registration: 20160714 Address after: 545006 the Guangxi Zhuang Autonomous Region Liuzhou city and the Industrial District Yang Road No. 1 Patentee after: Liuzhou OVM Machinery Co., Ltd. Patentee after: State Astronomical Observatory, CAS Address before: 545005 Longquan Road, the Guangxi Zhuang Autonomous Region, No. 3, No. Patentee before: Liuzhou OVM Machinery Co., Ltd. |