CN2712990Y - Improved backup anchor for bridge drag rope structure - Google Patents
Improved backup anchor for bridge drag rope structure Download PDFInfo
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- CN2712990Y CN2712990Y CNU2003201237346U CN200320123734U CN2712990Y CN 2712990 Y CN2712990 Y CN 2712990Y CN U2003201237346 U CNU2003201237346 U CN U2003201237346U CN 200320123734 U CN200320123734 U CN 200320123734U CN 2712990 Y CN2712990 Y CN 2712990Y
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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Abstract
The utility model relates to an improved auxiliary anchor for a bridge drag rope structure. The utility model is characterized in that a pair of semi-cylinder-shaped auxiliary anchor cups 101 is fixed together with steel web plates 202/302 through transverse screw bolts 102 and is supported on auxiliary anchor plates 205/305, and semi-cutting end conical holes are arranged in the anchor cups to contain semi-number steel strand wires of a drag rope; after the stress of the drag rope is adjusted, cold casting materials 112 are pressed in the drag rope, and the steel strand wires 5 are fixedly connected with the auxiliary anchor cups 101, the steel web plates 202/302 and the auxiliary anchor plates 205/305 into integration; when a single steel strand wire is replaced, the auxiliary anchor cups 101 coated with mold releasing agent on the inner walls are firstly disassembled, the solidified cold casting materials 112 are exposed under the working condition capable of being observed and touched, and then partial or all cold casting materials 112 are chiseled and removed by high-pressure jetting water 605 or similar methods having no damage to the steel strand wires according to the requirement for replacing a single steel strand wire.
Description
Technical field
The utility model belongs to cable-stayed bridge cable ground tackle technical field.
Background technology
" a kind of bridge cable structure " [Chinese patent, the patent No.: ZL 99 2 38964.X] the same inventor by the utility model patent application have developed.In its advantage, comprise following two:
1) anchor hole of parallel steel stranded wire is divided into symmetrical two groups in main group anchor ground tackle, thereby the main group anchor can be anchored in i section steel beam, the bottom of I-shaped binder or steel anchoring part reliably under the condition of drag-line axis and web dead in line.
2) except that the main group anchor, also have piggy-back anchor to help the main group anchor to bear live load, thereby general intermediate plate also can be applied in the main group anchor reliably under the condition that satisfies single replacing steel strand.
Find that by engineering practice " a kind of bridge cable structure " remains in following two weak points:
1) in this structure, the single replacing of steel strand in piggy-back anchor is to carry out under the condition that can not directly contact, and all makes troubles for the constructing operation and the quality control of single replacing steel strand, need be improved.
2) in this structure, the main group anchor only is arranged in beyond the outline line of beam body, so that drag-line is at the tension operation of beam-ends.But owing to the specific (special) requirements of the architectural aesthetics, the main group anchor need be arranged in the outline line of beam body sometimes, and drag-line can be in beam-ends stretch-draw.The range of application that needs expansion " a kind of bridge cable structure " is to adapt to this new demand.
Summary of the invention
The present invention is " a kind of bridge cable structure " a kind of modified piggy-back anchor and a kind of modified Bower Anchor of providing for this reason.Improved purpose is under the prerequisite that continues maintenance " a kind of bridge cable structure " former every advantage, and further satisfy following the requirement again: 1) the single more transducing of steel strand in piggy-back anchor carries out under the condition of steel strand that is at physical existence.2) when the special requirement that the architectural aesthetics is arranged, the main group anchor can be arranged in the outline line of beam body.In order to realize the foregoing invention purpose, the utility model patented technology comprises: the 1) structure of modified piggy-back anchor, 2) the construction worker State-of of modified piggy-back anchor, 3) the single replacing steel strand worker State-of of modified piggy-back anchor, 4) four parts such as structure of modified Bower Anchor.Introduce the summary of the invention of each several part below respectively.
The structure of modified piggy-back anchor partly comprises following content:
1. and piggy-back anchor is made up of one half cylinder shape anchor cups, and they are by cross bolts and i-shape steel beam, and steel binder, the web of steel anchoring part or steel anchor box tighten together and be bearing on the piggy-back anchor anchor slab.On the steel web, be drilled with the hole that allows cross bolts pass through.
2. have a half head round taper hole to hold the half steel strand of a drag-line in the inboard of that pair half cylinder shape anchor cup.Be drilled with into slurry hole and venthole on the hole wall of half head round taper hole and communicate with the external world.
3. that pair half cylinder shape anchor cup is limited by the thrust screw rod to moving of main group anchor anchor slab direction.The thrust screw rod also can closely be pressed onto the anchor cup on the piggy-back anchor anchor slab.On main group anchor anchor slab, be drilled with silk hole with thrust screw rod coupling.
4. between main group anchor anchor slab and anchor cup, be furnished with the steel deck-plate of basin shape band shoulder.In the basin of steel deck-plate, be respectively equipped with semicircle seal cover and the semicircle sealing ring of making by plastics or rubber with the shoulder side.For steel deck-plate is fixed on the main group anchor anchor slab closely connectedly, at steel deck-plate and main group anchor anchor slab, on be drilled with a hole and a silk hole with screw coupling respectively.So just formed the sealing of piggy-back anchor at main group anchor anchor slab one end.
5. also be provided with the seal cover of making by plastics or rubber at piggy-back anchor anchor slab one end.By keeper plate of steel, screw and piggy-back anchor anchor slab and web tighten together and form the sealing of piggy-back anchor at piggy-back anchor anchor slab one end.At keeper plate of steel and piggy-back anchor anchor slab, be drilled with hole and silk hole on the web respectively with the screw coupling.
The content of modified piggy-back anchor construction worker State-of part is:
By be drilled with on the hole wall in the half head pyramid type hole of anchor cup go into to starch the hole pressure injection go into high-strength cement mortar and/or epoxy resin and/or other high-strength bond the chill casting material and by hole wall in the half head pyramid type hole of anchor cup on the venthole exhaust that is drilled with, the steel strand that make a drag-line half are by bonding chill casting material and anchor cup after solidifying, steel deck-plate, piggy-back anchor anchor slab and steel web form an induration.
The single replacing steel strand worker State-of of modified piggy-back anchor partly comprises following content:
7. coating release agent on each inner surface of anchor cup, and on the anchor cup, be drilled with instrument silk hole.When needs carry out the single steel strand replacing, can the instrument screw rod be screwed into the instrument silk hole of anchor cup by the instrument beam is installed on the stiffener.By the nut on the screwing tool screw rod anchor cup is pulled away from the chill casting material bodies and the steel web of curing, removable subsequently anchor cup then.
8. after making the anchor cup be pulled away from the chill casting material bodies by the nut on the screwing tool screw rod and being removed, the chill casting material bodies that half head circle heap shape is solidified just be exposed to can directly visiblely touch condition of work under.With water jetting at high pressure or the similar method that can not damage firm twisted wire, cut the chill casting material bodies of part or all of half head circle heap shape curing according to the needs of single replacing steel strand then.
The content of modified Bower Anchor structure part is:
9. the aufbauprinciple of modified piggy-back anchor also extends on the main group anchor, be and that the main group anchor is made up of one half cylinder shape anchor cups, they are by cross bolts and i-shape steel beam, steel binder, the web of steel anchoring part or steel anchor box tighten together and are bearing near the main group anchor anchor slab above the steel sole plate.
Description of drawings
1. the expression way of accompanying drawing is also followed following special agreement except following common engineering drawing conventional: a) " section " not only shown the structure that tangent plane switches to but also shown the structure in tangent plane sight line the place ahead.To numbering identical arrow place short-term with the arrow quadrature is arranged all at each, the position that this arrives for this section sectility the line of short-term, and the direction of section arrow is a direction of visual lines.If the section sectility to the position have along the moving of structure axis, then have a pair of turnover symbol to link to each other, the turnover symbol is made up of the short-term of two quadratures.B) numbering of section Roman character I, II, III, IV, V represents.C) if the structure of the position of tangent plane and section is presented on same the accompanying drawing, the mark of then after Roman character, not annotating.D) if the position of tangent plane is presented on the different accompanying drawings with the structure of section, then after Roman character, add the notes mark of Arabic numerals, the Arabic numerals before and after the comma are represented the figure number that the structure of the figure number at place, tangent plane position and section is shown respectively.For example " section II2,3 " expression: the numbering of section is II, and its tangent plane position display is on Fig. 2, and its structure is presented on Fig. 3.
2. Figure 1A to 1C shows is drag-line and i section steel beam 2 steel or the general arrangement that connects with the mixed steel anchor box 3 of concrete beam 2 in the time main group anchor 4 must being arranged in beam body outline line with interior specific (special) requirements.Can also see from this figure piggy-back anchor 1 place the position and with the relation of other structure.
Fig. 2 on, the lower part shows the vertical section and the vertical facade of piggy-back anchor respectively.
4. what Fig. 3 A and 3B showed is three cross sections of piggy-back anchor.
5. what Fig. 4 A and 4B showed is in the time need carrying out the replacing of single steel strand, how anchor cup A1 is pulled away from the operating means of the chill casting material bodies 112 of curing.
6. what Fig. 5 A and 5B showed is after anchor cup 101 unloads, the vertical section of piggy-back anchor, vertical facade and cross section.The chill casting material bodies 112 that can see curing from this figure how can directly visiblely touch condition of work under can not damaged water jetting at high pressure 605 methods of firm twisted wire, cut according to the needs of single replacing steel strand.
7. Fig. 6 is the cross sectional perspective view of Fig. 5 displayed content.This figure needs to use in specification digest.
8. what Fig. 7 A and 7B showed is to be anchored in the structure of beam body outline line with interior main group anchor.
The specific embodiment
The art of this patent can be converted into the complete sets of products of seriation by the specialized building machinery of prestressing force enterprise (hereinafter to be referred as " first kind enterprise "), and the construction by civil engineering enterprise (hereinafter to be referred as " the second class enterprise ") is installed to product construction sequence in accordance with regulations the ground tackle part of forming the cable-stayed bridge cable structure on the cable stayed bridge engineering then.Cable stayed bridge is runed after the several years if the drag-line damage, do not need to resemble the present routine techniques and must change whole drag-line, and can be by the construction enterprises that are engaged in bridge maintenance (hereinafter to be referred as " the 3rd class enterprise ") replacing program in accordance with regulations damaged steel strand in drag-line of only single replacing under the condition that is at physical existence.Thereby the art of this patent must be come common implementing by three class enterprises.Introduce common ground and special part that how the art of this patent is specifically implemented below respectively in all kinds of enterprises.
1. common ground
Modified Bower Anchor, the relation of other dependency structure part of the structure of piggy-back anchor and they and bridge all need to understand when being above-mentioned three class enterprise implement the art of this patent, and be as follows in it:
1.1 ground tackle is at the structure of the special general arrangement of beam-ends
If do not have the main group anchor to be arranged in the specific (special) requirements of beam body outline line with the interior architectural aesthetics at beam-ends, the general arrangement of ground tackle will equally with the tower end continue to adopt " a kind of bridge cable structure " original arrangement.The described special general arrangement of this section is only just adopted when beam-ends has above-mentioned architectural aesthetics specific (special) requirements.
Just can see drag-line and i section steel beam 2 steel as shown in Figure 1 or the special tectonic that connects with steel anchor box 3 that concrete beam 2 mixes after seal cover board 208/308 takes off on by stiffener 203/303: and one half cylinder type main group anchors 4 are arranged near the both sides of the steel web 202/302 of steel sole plate 201/301 top and are bearing on the main group anchor anchor slab 204/304.The same with original " a kind of bridge cable structure ", between main group anchor anchor slab 204/304 and piggy-back anchor anchor slab 205/305, arrange one and half cylinder shape piggy-back anchors 1.
Mix in order to bear the internal force that concrete beam 2 mixes reliably and drag-line power to be passed to concrete beam 2, mix connection places layout steel anchor boxes 3 at drag-line and concrete beam 2.3 base plate 301, web 302, stiffener 303, main group anchor anchor slab 304, piggy-back anchor anchor slab 305, shear-pin 306, drag-line pipe 307 pour into that concrete beam 2 mixes and link with 2 reinforcing bars that mix.
1.2 the structure of beam-ends and tower end modified piggy-back anchor
Fig. 2 and Fig. 3 have shown the structure of piggy-back anchor 1, and it is by forming with the lower part:
1) and one half cylinder shape anchor cups 101 are by cross bolts 102 and i-shape steel beam, the steel binder, and the web 202/302 of steel anchoring part or steel anchor box tightens together and is bearing on the piggy-back anchor anchor slab 205/305.On steel web 202/302, be drilled with the hole that allows cross bolts 102 pass through.
2) on main group anchor anchor slab 204/304, be drilled with the silk hole of mating with thrust screw rod 103.Thrust screw rod 103 can closely be pressed onto anchor cup 101 on the piggy-back anchor anchor slab 205/305, and can limit anchor cup 101 moving to main group anchor anchor slab 204/304 direction.
3) have the steel strand 5 of the conical hole of half head in the inboard of each half cylinder shape anchor cup 101 to hold a drag-line half.On the hole wall in half head pyramid type hole, be drilled with and communicate with the external world into slurry hole 111 and venthole 113.
4) between main group anchor anchor slab 204/304 and anchor cup 101, be furnished with the steel deck-plate 104 that basin shape band is takeed on.In 104 basin, be respectively equipped with semicircle seal cover 105 and the semicircle sealing ring of making by plastics or rubber 106 with the shoulder side.For steel deck-plate 104 is fixed on the main group anchor anchor slab 204/304 closely connectedly, 104 and 204/304, on be drilled with a hole and a silk hole with screw 107 coupling respectively.104,105,106,107 form the sealing of piggy-back anchor 1 at main group anchor anchor slab 204,304 1 ends.
5) end at piggy-back anchor anchor slab 205/305 also is provided with the seal cover of being made by plastics or rubber 108.108 by keeper plate of steel 109, and screw 110 tightens together with piggy-back anchor anchor slab 205/305 and web 202/302 and forms the sealing of piggy-back anchor 1 at piggy-back anchor anchor slab 2,05/,305 1 ends.On 109 and 205/305,202/302, be drilled with hole and silk hole respectively with screw 110 couplings.
6) at anchor cup 101, steel deck-plate 104, the space that piggy-back anchor anchor slab 205/305 and steel web 202/302 surround goes into by going into to starch hole 111 pressure injections that high-strength cement mortar and/or epoxy resin and/or other are high-strength to bond chill casting material 112 and by venthole 113 exhausts.Like this, the steel strand 5 of a drag-line half are just by bonding chill casting material 112 and 101,104, induration of 205/305,202/302 formation after solidifying.Under the live load effect, recruitment and the reduction of the Suo Li of the overwhelming majority will be directly passed to piggy-back anchor anchor slab 205/305 and main group anchor anchor slab 204/304 respectively by this induration, have only sub-fraction to be delivered on the main group anchor 4, thereby alleviate the fatigue loading that main group anchor 4 bears greatly.
7) steel strand that contact with the chill casting material need carry out injury-free rust cleaning, and the surfacing of cleaning ， Pen Tu rustproof paint bonds and prevent the unfavorable chemical reaction of cement paste to the steel strand zinc coat to guarantee the chill casting material to steel strand.
8) keeper plate of steel 104 and 109, the diameter of the steel strand hole that is drilled with on the piggy-back anchor anchor slab 205/305 is sufficiently greater than the diameter of steel strand, and the diameter of the steel strand hole of reserving on seal cover 105 and 108 is slightly less than the diameter of steel strand, to guarantee in piggy-back anchor not contacting metal material of steel strand.
9) for the ease of the replacing of single steel strand in case of necessity, coating release agent on each inner surface of anchor cup 101, and on anchor cup 101, be drilled with a hole 114.
1.3 be anchored in beam body outline line with interior main group anchor structure
More than be applied to the help of piggy-back anchor by cross bolts and the principle that one half cylinder shape anchor cups are anchored on girder steel 2 steel or steel anchor box 3 webs 202/302 both sides also can be applied to the main group anchor, thereby it can be arranged in the beam body outline line.Accompanying drawing 7 has shown the structure of main group anchor thus arranged:
1) above near girder steel 2 steel or steel anchor box 3 base plates 201/301, there are one and half cylinder shape anchor cups 401 to be supported on the main group anchor anchor slab 204/304 in the both sides of web 202/302.
2) this double cylinder shape anchor cup 401 is anchored on the both sides of web 202/302 by the help of cross bolts 402.
3) be drilled with a group anchor hole 403 on anchor cup 401, steel strand 5 can be anchored in by intermediate plate separately in separately the anchor hole 403.
2. the special part of first kind enterprise
Because the drag-line length of large-scale cable stayed bridge can reach hundreds of rice, the stressed thousands of tons of that reaches of every rope, so huge drag-line will carry out prestressed stretch-draw and stress adjustment, the backstay that is open to traffic will bear king-sized fatigue loading, also be directly exposed in the outdoor environment, be the most responsive key position of bridge, thereby the product relevant with drag-line must be produced by the specialized building machinery of prestressing force enterprise.One of basic motives of exploitation the art of this patent is to come big convenience and reduce second by the meticulous work of suitable increase first kind enterprise in factory building, three class enterprises are in the work (particularly work high above the ground) of engineering site, are more necessaryly implemented by the specialized building machinery of the stronger prestressing force of strength enterprise.
According to the introduction of above-mentioned " common ground ", need the production of first kind enterprise and make the parts of its seriation can be divided into following three classes:
1) Chang Gui component of machine: the cross bolts 102 of piggy-back anchor, the steel deck-plate 104 of basin shape band shoulder, screw 107, keeper plate of steel 109, screw 110, the cross bolts 402 of Bower Anchor.
2) the specialized component of machine of prestressing force: half cylinder shape anchor cup 102 of piggy-back anchor, thrust screw rod 103.The anchor cup 401 of Bower Anchor.
3) needs and chemical industry, building material industry cooperation or the product of ordering goods: the semicircle seal cover 105 that plastics or rubber are made, semicircle sealing ring 106, seal cover 108, the high-strength chill casting material 112 that bonds to their.
More than the position display of each parts in ground tackle in Fig. 2 to Fig. 7.
3. the special part of the second class enterprise
3.1 prefabricated units of preparing by the second class enterprise directly relevant and the material second class enterprise with piggy-back anchor when the construction piggy-back anchor, except must possessing the above-mentioned matching component that first kind enterprise provides, also to prepare with direct relevant prefabricated units and the material of piggy-back anchor.These members are: be presented at the base plate 201/301 of the i section steel beam 2 steel/steel anchor box 3 among Fig. 1, web 202/302, stiffener 203/303, main group anchor anchor slab 204/304, piggy-back anchor anchor slab 205/305, seal cover board 208/308.In addition, the steel anchor box 3 that mixes for concrete beam 2 also has shear-pin 306, drag-line pipe 307.Material is the steel strand 5 that are presented among Fig. 2 to Fig. 7, is coated in the release agent on each inner surface of anchor cup 101.
3.2 the site operation program of piggy-back anchor
Structure is shown in Fig. 1, and piggy-back anchor its construction sequence when building the drag-line of cable stayed bridge in 2,3 is as follows:
1) by keeper plate of steel 109 and screw 110 seal cover 108 is fixed on auxiliary anchor slab 205/305 and the steel web 202/302.
2) by keeper plate of steel 104 and screw 107 seal cover 105 is fixed on the main group anchor anchor slab 204/304.
3) install and stretch-draw steel wire bundle 5 and anchoring on the main group anchor 4.The steel strand that contact with the chill casting material need carry out injury-free rust cleaning, and the surfacing of cleaning ， Pen Tu rustproof paint bonds and prevent the unfavorable chemical reaction of cement to the steel strand zinc coat to guarantee the chill casting material to steel strand.
4) after the stress adjustment of drag-line is finished before be open to traffic during this period of time, semicircle sealing ring 106 is installed, anchor cup 101, cross bolts 102 and thrust screw rod 103, and successively tighten 102 nut and 103.
5) by going into to starch hole 111 high-strength cement mortar and/or epoxy resin and/or other high-strength chill casting material 112 that bonds are pressed into anchor cup 101, continue by steam vent 113 ejections up to the chill casting material, again with 111 and 113 sealings.
4. the special part of the 3rd class enterprise
If drag-line damages, the 3rd class enterprise can be by the replacing program of the art of this patent regulation damaged steel strand in drag-line of only single replacing under the condition that is at physical existence after the cable stayed bridge operation several years.
4.1 the equipment of single replacing steel strand is prepared
Be presented at two class special installations among Fig. 4 to Fig. 6 below the 3rd class enterprise also must prepare except the lifting of routine and the equipment of ascending a height:
1) simple device: instrument beam 601, instrument screw rod 602, tetrafluoro packing ring 603 and nut 604.
2) novel device: be meant with water jetting at high pressure 605 or the similar method that can not damage firm twisted wire to cut chill casting material bodies 112 devices needed that part or all of half head circle heap shape is solidified.Produce in batches respectively 1985 and the nineties in Europe can cut concrete water jetting at high pressure machine of varying strength and robot fast, so this kind equipment is calculated conventional equipment in Europe.Therefore this kind equipment also is in conceptual phase at present in China, calculates novel device, and the 3rd class enterprise notes by development, import, and mode such as rent goes to perform the preparation of novel device.
4.2 the replacing program of single steel strand
Fig. 4,5,6 have shown the replacing program of single steel strand in piggy-back anchor in case of necessity:
1) unscrews thrust screw rod 103.
2) back out the nut of cross bolts 102.
3) instrument beam 601 is installed on the stiffener 203/303, instrument screw rod 602 is screwed into the silk hole 114 of anchor cup 101.Tetrafluoro packing ring 603 and nut 604 are installed then.
4) anchor cup 101 is pulled away from the chill casting material bodies 112 and the steel web 202/302 of curing by screwing nut 604.
5) remove semicircle sealing ring 106 and anchor cup 101, then the chill casting material bodies 112 that half head circle heap shape is solidified just be exposed to can directly visiblely touch condition of work under.Anchor cup that cleaning is removed 101 and within it the surface recoat release agent.
6), cut the chill casting material bodies 112 of part or all of half head circle heap shape curing according to the needs of single replacing steel strand with water jetting at high pressure 605 or the similar method that can not damage firm twisted wire.
7) loosen with the stretching single steel strand jack and remove the steel strand that need be replaced.
8) install with the stretching single steel strand jack and steel strand that stretch-draw is new and it is anchored on the main group anchor.
9) new semicircle sealing ring 106 is installed, is reinstalled anchor cup 101, install and tighten the nut of cross bolts 1-2, tighten thrust screw rod 103 then.
10) by going into to starch hole 111 the new high-strength chill casting material 112 that bonds is pressed into anchor cup 101, continues by steam vent 113 ejections up to the chill casting material, again with 111 and 113 sealings.
Claims (10)
1. modified piggy-back anchor that is applied to a kind of bridge cable structure, it is characterized in that: and piggy-back anchor is made up of one half cylinder shape anchor cups (101), they are by cross bolts (102) and i-shape steel beam, steel binder, the web of steel anchoring part or steel anchor box (202/302) tighten together and are bearing on the piggy-back anchor anchor slab (205/305); On steel web (202/302), be drilled with the hole that allows cross bolts (102) pass through.
2. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1 is characterized in that: have a half head round taper hole in the inboard of that pair half cylinder shape anchor cup (101) to hold the half steel strand (5) of a drag-line; Be drilled with on the hole wall of half head round taper hole into slurry hole (111) and venthole (113) and communicate with the external world.
3. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1 is characterized in that: that pair half cylinder shape anchor cup (101) is limited by thrust screw rod (103) to moving of main group anchor anchor slab (204/304) direction; Thrust screw rod (103) also can closely be pressed onto anchor cup (101) on the piggy-back anchor anchor slab (205/305); On main group anchor anchor slab (204/304), be drilled with silk hole with thrust screw rod (103) coupling.
4. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1 is characterized in that: the steel deck-plate (104) that is furnished with basin shape band shoulder between main group anchor anchor slab (204/304) and anchor cup (101); In the basin of steel deck-plate (104), be respectively equipped with semicircle seal cover (105) and the semicircle sealing ring of making by plastics or rubber (106) with the shoulder side; For steel deck-plate (104) is fixed on the main group anchor anchor slab (204/304) closely connectedly, at steel deck-plate (104) and main group anchor anchor slab (204/304), on be drilled with a hole and a silk hole with screw (107) coupling respectively; (104), (105), (106), (107) form the sealing of piggy-back anchor (1) at main group anchor anchor slab (204/304) one end.
5. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1 is characterized in that: also be provided with the seal cover of being made by plastics or rubber (108) at piggy-back anchor anchor slab (205/305) one end; (108) by keeper plate of steel (109), screw (110) tightens together with piggy-back anchor anchor slab (205/305) and web (202/302) and forms the sealing of piggy-back anchor (1) at piggy-back anchor anchor slab (205/305) one end; At keeper plate of steel (109) and piggy-back anchor anchor slab (205/305), be drilled with hole and silk hole on the web (202/302) respectively with screw (110) coupling.
6. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1 and 2, it is characterized in that: by be drilled with on the hole wall in the half head pyramid type hole of anchor cup (101) go into to starch hole (111) pressure injection go into high-strength cement mortar and/or epoxy resin and/or other high-strength bond chill casting material (112) and by hole wall in the half head pyramid type hole of anchor cup (101) on venthole (113) exhaust that is drilled with, the steel strand (5) that make a drag-line half are by bonding chill casting material and anchor cup (101) after solidifying, steel deck-plate (104), piggy-back anchor anchor slab (205/305) and steel web (202/302) form an induration.
7. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1 is characterized in that: coating release agent on each inner surface of anchor cup (101), and on anchor cup (101), be drilled with instrument silk hole (114); When needs carry out the single steel strand replacing, can instrument screw rod (602) be screwed into the instrument silk hole (114) of anchor cup (101) by instrument beam (601) is installed on the stiffener (203/303); By the nut (604) on the screwing tool screw rod (602) anchor cup (101) is pulled away from the chill casting material bodies (112) and the steel web (202/302) of curing, removable subsequently anchor cup (101) then.
8. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1, it is characterized in that: after making anchor cup (101) be pulled away from chill casting material bodies (112) and be removed by the nut (604) on the screwing tool screw rod (602), the chill casting material bodies (112) that half head circle heap shape is solidified just be exposed to can directly visiblely touch condition of work under; Use water jetting at high pressure (605) or the similar method that can not damage firm twisted wire then, cut the chill casting material bodies (112) of part or all of half head circle heap shape curing according to the needs of single replacing steel strand.
9. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 7, it is characterized in that: after making anchor cup (101) be pulled away from chill casting material bodies (112) and be removed by the nut (604) on the screwing tool screw rod (602), the chill casting material bodies (112) that half head circle heap shape is solidified just be exposed to can directly visiblely touch condition of work under; Use water jetting at high pressure (605) or the similar method that can not damage firm twisted wire then, cut the chill casting material bodies (112) of part or all of half head circle heap shape curing according to the needs of single replacing steel strand.
10. the modified piggy-back anchor that is applied to a kind of bridge cable structure according to claim 1 is characterized in that, form by one and half cylinder shape anchor cups (101), they are by cross bolts (102) and i-shape steel beam, the steel binder, the web of steel anchoring part or steel anchor box (202/302) tightens together and is bearing in structure on the piggy-back anchor anchor slab (205/305), this aufbauprinciple also extends on the main group anchor, be and that the main group anchor is made up of one half cylinder shape anchor cups (401), they are by cross bolts (402) and i-shape steel beam, steel binder, the web of steel anchoring part or steel anchor box (202/302) tighten together and are bearing on the main group anchor anchor slab (204/304) near steel sole plate (201/301) top.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02029058.1 | 2002-12-30 | ||
| EP02029058A EP1435413A1 (en) | 2002-12-30 | 2002-12-30 | Improved anchorage sockets for the "novel technique for stay cable system" |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2712990Y true CN2712990Y (en) | 2005-07-27 |
Family
ID=32479728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201237346U Expired - Fee Related CN2712990Y (en) | 2002-12-30 | 2003-11-27 | Improved backup anchor for bridge drag rope structure |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1435413A1 (en) |
| CN (1) | CN2712990Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509231B (en) * | 2009-03-26 | 2010-10-20 | 周孝余 | Construction method for quickly assembling and disassembling guy cable of stayed-cable bridge |
| CN104878692A (en) * | 2015-04-27 | 2015-09-02 | 吉林省银河水利水电新技术设计有限公司 | Hydraulic concrete internal anchoring method for stay ropes with bidirectional punched steel plate hanging structures |
| CN107587426A (en) * | 2017-09-05 | 2018-01-16 | 安徽金星预应力工程技术有限公司 | Bridge external prestressing system auxiliary anchorage |
| CN109056529A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of steel anchor box suitable for rail iron trusses suspension bridge pin joint formula hoist cable |
| CN109056531A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of steel anchor box suitable for rail iron trusses suspension bridge straddle-type hoist cable |
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| BR112012023677B1 (en) * | 2010-03-26 | 2022-03-15 | Vsl International Ag | Sealing arrangement for a building element and building element |
| CN102704395A (en) * | 2012-06-01 | 2012-10-03 | 中铁大桥勘测设计院集团有限公司 | Internal inhaul cable and steel anchor box anchoring structure |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69816303D1 (en) | 1998-10-15 | 2003-08-14 | Yincheng Hou | Stay cable system |
-
2002
- 2002-12-30 EP EP02029058A patent/EP1435413A1/en not_active Withdrawn
-
2003
- 2003-11-27 CN CNU2003201237346U patent/CN2712990Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509231B (en) * | 2009-03-26 | 2010-10-20 | 周孝余 | Construction method for quickly assembling and disassembling guy cable of stayed-cable bridge |
| CN104878692A (en) * | 2015-04-27 | 2015-09-02 | 吉林省银河水利水电新技术设计有限公司 | Hydraulic concrete internal anchoring method for stay ropes with bidirectional punched steel plate hanging structures |
| CN104878692B (en) * | 2015-04-27 | 2016-08-17 | 吉林省银河水利水电新技术设计有限公司 | Anchor method in the concrete for hydraulic structure of a kind of two-way punched steel plate mounting drag-line |
| CN107587426A (en) * | 2017-09-05 | 2018-01-16 | 安徽金星预应力工程技术有限公司 | Bridge external prestressing system auxiliary anchorage |
| CN109056529A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of steel anchor box suitable for rail iron trusses suspension bridge pin joint formula hoist cable |
| CN109056531A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of steel anchor box suitable for rail iron trusses suspension bridge straddle-type hoist cable |
| CN109056529B (en) * | 2018-09-25 | 2024-03-08 | 中铁二院工程集团有限责任公司 | Steel anchor box suitable for pin joint type sling of railway steel truss girder suspension bridge |
| CN109056531B (en) * | 2018-09-25 | 2024-03-12 | 中铁二院工程集团有限责任公司 | Steel anchor box suitable for riding type sling of railway steel truss girder suspension bridge |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20050727 Termination date: 20091228 |