CN109295861B - Cable with anchor box type anchoring structure and tensioning construction method thereof - Google Patents

Abstract

The utility model provides an anchor box anchor structure cable, includes anchor box, cable ground tackle, anchor nut and the tensioning mechanism that has reaction structure, and this anchor box includes as the bridge deck of anchor box bottom plate, two anchor box curb plates, anchor backing plate, steel pipe, front and back shrouding and anchor box upper shrouding that lie in anchor box both sides; the anchor backing plate is positioned in the middle of the two anchor box side plates and is fixedly connected with the two anchor box side plates, the steel guide pipe is fixed on the anchor backing plate, the front and rear sealing plates are positioned at the upper parts of the front side and the rear side of the two anchor box side plates, and the front and rear sealing plates are fixedly connected with the upper sealing plates of the anchor box positioned at the top of the anchor box side plates to form a box-shaped structure; the reaction structure is a reaction structure lug plate arranged at the upper part of the anchor box or an integrated reaction step structure arranged on a steel conduit of the anchor box; in the installation state, the lower end of the inhaul cable penetrates into the steel guide pipe of the anchor box; the tensioning support cylinder is sleeved outside the inhaul cable body and assembled into a whole, and the tensioning mechanism is arranged on a counterforce structure arranged on the upper part of the anchor box. By adopting the inhaul cable and the tensioning construction method thereof, the inhaul cable tensioning construction can be carried out on the bridge deck, and the tensioning operation is convenient.

Description

Cable with anchor box type anchoring structure and tensioning construction method thereof

Technical Field

The invention relates to a bridge inhaul cable and a construction method thereof, in particular to an anchor box type anchoring structure inhaul cable and a tensioning construction method thereof.

Background

The connection mode of the bridge inhaul cable and the stiffening girder can generally adopt anchor head bearing type (shown in figure 15) or pin joint type (shown in figures 16-1 to 16-2), when the conventional anchor head bearing type anchors the bottom of the stiffening girder, a special hanging basket type tensioning platform needs to be manufactured, and tensioning is installed under the girder; when the box girder is anchored in the middle of the steel box girder, enough space is reserved for tensioning when the box girder is designed, so that the box girder structure is easy to weaken, and the tensioning operation is very inconvenient in a narrow space; the pin joint type is to connect the fork lugs of the lower-end inhaul cable with the stiffening Liang Erban by utilizing a pin shaft, the general pin joint inhaul cable structure cannot be tensioned and adjusted, an adjusting device is added between the fork lugs and an anchorage device if tensioning and adjusting are needed, and tensioning counterforce structures are needed to be arranged at two ends of the adjusting device.

Disclosure of Invention

The invention aims at: the lower end of the anchor box type anchor structure inhaul cable adopts a conventional anchor head bearing structure, combines the anchor box structure with a counterforce structure, performs pushing tensioning by utilizing a shoulder pole beam and a tensioning support cylinder, and realizes the installation tensioning and adjustment work of the bridge inhaul cable. By adopting the cable with the anchor box type anchoring structure and the tensioning construction method thereof, the cable installation and tensioning construction can be carried out on the bridge deck, the tensioning operation is convenient, and the stability, durability, safety and reliability of the bridge structure are ensured.

The technical scheme for solving the problems is as follows: the utility model provides an anchor box anchor structure cable, includes anchor box, cable ground tackle, anchor nut and tensioning mechanism, the anchor box directly sets up above the stiffening beam bridge deck, is whole box structure, its characterized in that: the anchor box is an anchor box with a counterforce structure and comprises a bridge deck plate, two anchor box side plates, an anchor backing plate, a steel guide pipe, front and rear sealing plates and an anchor box upper sealing plate;

the bridge deck is used as an anchor box bottom plate, two anchor box side plates are positioned at two sides of the anchor box and fixed on the bridge deck, an anchor backing plate with an anchor hole in the middle is positioned at the middle of the two anchor box side plates and fixedly connected with the two anchor box side plates, a steel guide pipe is fixed on the anchor backing plate, wherein the axis is concentric with the anchor backing plate, a front sealing plate and a rear sealing plate are positioned at the upper parts of the front side and the rear side of the two anchor box side plates and fixedly connected with an anchor box upper sealing plate positioned at the top of the anchor box side plates to form a box structure;

the reaction structure is a reaction structure lug plate arranged at the upper part of the anchor box or an integrated reaction step structure arranged on a steel conduit of the anchor box;

the tensioning mechanism comprises a tensioning support cylinder, a tensioning rod, a shoulder pole beam, tensioning supporting feet, a tensioning jack and a tensioning nut which are arranged on the counter-force structure;

in the installation state, the lower end of the inhaul cable body penetrates into a steel guide pipe of the anchor box; the tensioning support cylinder is sleeved outside the guy cable body, is assembled into a whole in a fitting way and penetrates into the steel guide pipe, the lower end of the tensioning support cylinder is propped against the upper end face of the anchor at the lower end of the guy cable, and the tensioning mechanism is arranged on a counterforce structure arranged on the upper part of the anchor box.

The further technical scheme of the anchor box type anchor structure inhaul cable is as follows: the anchor box with the counterforce structure is an anchor box I, the anchor box I comprises a bridge deck plate, two anchor box side plates, an anchor backing plate, a steel conduit I, two front and rear sealing plates and an anchor box upper sealing plate,

the reaction structure is a reaction structure lug plate which is positioned on an upper sealing plate of the anchor box I and fixedly connected with two side plates of the anchor box;

the tensioning mechanism comprises a tensioning support cylinder, tensioning fork lugs, a tensioning pull rod, a shoulder pole beam, tensioning supporting feet, a tensioning jack and a tensioning nut;

under the installation state, the tensioning fork ear sleeve of tensioning mechanism inserts on the reaction structure otic placode of two anchor box curb plates fixed connection with anchor box I to fixed through the round pin axle, the tensioning rod revolves to twist on the tensioning fork ear, and two half shoulder pole roof beams aim at cable and tensioning rod hole laminating assembly.

It further: a thickened sealing device structure is arranged below the tensioning support cylinder, the inhaul cable anchorage is provided with the thickened sealing device structure, the lower end of the tensioning support cylinder is pressed on the upper end face of the thickened sealing device during installation, and a spherical support is installed between the anchor nut and the anchor backing plate.

The technical scheme of the anchor box type anchor structure inhaul cable is as follows: the anchor box with the counterforce structure is an anchor box II, and the anchor box II comprises a bridge deck plate, two anchor box side plates, an anchor backing plate, a steel guide pipe II, a front sealing plate, a rear sealing plate and an anchor box upper sealing plate;

the counterforce structure is a counterforce integrated steel conduit step of the steel conduit II of the anchor box II or a combined step formed by a threaded steel conduit and a nut;

the tensioning mechanism comprises a tensioning support cylinder, a tensioning rod, a shoulder pole beam, tensioning supporting feet, pushing and tensioning jacks, a tensioning nut and a lower shoulder pole beam which are arranged on the counter-force structure;

in the installation state, the two-half type lower-end carrying pole Liang Gebao is assembled into a whole outside the outer circle of the lower end of the combined step formed by the counterforce integrated steel conduit step of the steel conduit II of the anchor box II or the threaded steel conduit and the nut in a fitting way, the two-half type carrying pole Liang Gebao is assembled into a whole outside the inhaul cable in a fitting way, the lower end face is pressed against the upper end face of the supporting cylinder, the tension rod is inserted into the two side holes of the carrying pole beam, and the tension nut is installed below the lower-end carrying pole beam; and the shoulder pole beam is sequentially provided with tensioning supporting feet, temporary locking nuts, tensioning jacks and tensioning nuts.

The technical scheme of the stay cable of the anchor box type anchoring structure is that: the tensioning support cylinder is a half ring-shaped structure tensioning support cylinder I, can be attached to and separated from each other, is a U-shaped opening ring-shaped structure tensioning support cylinder II or a half-shaped structure tensioning support cylinder III with 2-6 split pieces, is connected into a whole in a bolt connection or self-locking slot mode, and is formed by overlapping 2-6 sections longitudinally.

The shoulder pole beam and the lower end shoulder pole beam are of two-half structures, can be attached and separated, each shoulder pole beam is provided with an anchoring hole in a penetrating mode in the vertical middle direction on the horizontal plane, the anchoring holes are matched with the outer diameter of the inhaul cable or the steel guide pipe, the two-half shoulder pole beams can be integrated by encircling the inhaul cable or the steel guide pipe, and two stretching holes are formed in opposite positions at two sides of each anchoring hole.

Another related technical scheme is as follows: one of the tensioning construction methods of the inhaul cable of the anchor box type anchoring structure is that the anchor box with the counterforce structure is the tensioning construction method of the inhaul cable of the anchor box type anchoring structure of the anchor box I, and the tensioning construction method comprises the following steps:

A. threading and installing a tensioning mechanism:

a1, threading:

firstly, penetrating the lower end of a inhaul cable into a steel conduit I of an anchor box I;

a2, installing a tensioning mechanism:

fitting and assembling a tensioning support cylinder outside a guy rope into a whole, penetrating into a steel conduit I, propping the lower end of the support cylinder against the upper end face of an anchor at the lower end of the guy rope, inserting a tensioning fork ear sleeve into a counterforce structure ear plate on an anchor box upper sealing plate of an anchor box I, and penetrating and fixing a pin shaft;

screwing a tension rod on a tension fork lug, fitting and assembling the two halves of carrying pole beams into a whole by aligning with a guy cable and a tension rod hole, clamping the two halves of carrying pole beams by using a bolt pair, pressing the two halves of carrying pole beams on the upper end surface of a tension supporting cylinder, and sequentially installing tension supporting feet, a temporary locking nut, a tension jack and a tension nut;

B. stretching:

b1: stretching 1: after the installation is completed, the shoulder pole beam is pushed to push the tensioning support cylinder by the extension of the tensioning jack, and the tensioning support cylinder pushes the inhaul cable anchor downwards;

b2: stretching 2: when the jack reaches the tensioning stroke, but the anchor is not exposed enough to the anchoring length of the nut, the temporary locking nut is tightly screwed to be tightly pressed on the shoulder pole beam to play a temporary anchoring role, so that the jack returns oil, the tensioning jack and the tensioning nut are continuously pushed and tensioned after returning, and the anchor nut is installed after the anchor of the inhaul cable is pushed to the end face of the anchor backing plate exposed out of the anchor box enough to the anchoring length of the nut;

b3: stretching 3: the pushing and the stretching are continued, the anchoring nuts can be screwed step by step in the stretching process, and the anchoring nuts are screwed after the inhaul cable meets the cable force requirement, so that the stretching work is completed;

C. disassembling the tensioning mechanism:

after the tensioning is completed, the tensioning nut, the tensioning jack, the tensioning supporting leg, the temporary locking nut, the shoulder pole beam, the tensioning supporting cylinder, the tensioning pull rod, the pin shaft and the tensioning fork lug can be sequentially detached.

Another related technical scheme is as follows: the second tensioning construction method of the inhaul cable with the anchor box type anchoring structure is that the anchor box with the counterforce structure is an anchor box II, and comprises the following steps:

A. rope threading and installation tensioning mechanism

A1, threading:

firstly, penetrating the lower end of a inhaul cable into a steel guide pipe II of an anchor box II;

a2, installing a tensioning mechanism:

the tensioning support cylinder is sleeved outside the inhaul cable and assembled into a whole in a fitting way, the lower end of the support cylinder is propped against the upper end face of an anchor at the lower end of the inhaul cable, the two-half lower-end carrying pole Liang Gebao is assembled into a whole in a fitting way outside a counterforce integrated steel conduit step of the steel conduit II of the anchor box II or a combined step lower-end excircle formed by a threaded steel conduit and a nut, the two-half carrying pole Liang Gebao is assembled into a whole in a fitting way outside the inhaul cable, and the lower end face is pressed against the upper end face of the support cylinder;

inserting a tension rod into two side holes of the shoulder pole beam and the lower shoulder pole beam, and screwing a tension nut under the lower shoulder pole beam; the shoulder pole beam is sequentially provided with a tensioning supporting leg, a temporary locking nut, a tensioning jack and a tensioning nut;

B. stretching:

b1: stretching 1: after the installation is completed, the shoulder pole beam is pushed to push the tensioning support cylinder by the extension of the tensioning jack, and the tensioning support cylinder pushes the inhaul cable anchor downwards;

b2: stretching 2: when the tensioning jack reaches the tensioning stroke, but the anchor is not exposed enough to the anchoring length of the nut, screwing the temporary locking nut to be tightly pressed on the shoulder pole beam to play a temporary anchoring role, enabling the tensioning jack to return oil, continuously pushing and tensioning the tensioning jack and the tensioning nut after returning, and installing the anchoring nut after the anchor of the inhaul cable is pushed to the end face of the anchor backing plate exposed out of the anchor box enough to the anchoring length of the nut;

b3: stretching 3: the pushing and the stretching are continued, the anchoring nuts can be screwed step by step in the stretching process, and the anchoring nuts are screwed after the inhaul cable meets the cable force requirement, so that the stretching work is completed;

C. disassembling the tensioning mechanism:

after the tensioning is completed, the tensioning nut, the tensioning jack, the tensioning supporting leg, the temporary locking nut, the shoulder pole beam, the tensioning supporting cylinder, the tensioning pull rod, the pin shaft and the tensioning fork lug can be sequentially detached.

Due to the adoption of the structure, the anchor box type anchor structure inhaul cable and the tensioning construction method thereof have the following beneficial effects:

1. the adoption of the anchor box type anchoring structure inhaul cable enables the main body of the bridge stiffening girder to be compact in structure and good in integrity, tension space is not reserved in the stiffening girder box girder, force transmission of the anchoring structure is direct and reliable, the structure is transparent, the anchoring area is convenient to overhaul, and water accumulation and corrosion are not easy to occur. The bridge structure is ensured to be stable, durable, safe and reliable.

2. The inhaul cable can adopt a conventional anchor head pressure-bearing inhaul cable, and has simple structure and low manufacturing cost.

3. The anchor box type anchor structure inhaul cable and the construction method thereof are adopted, the installation and tensioning construction is carried out on the bridge deck, a tensioning platform is not required to be additionally erected, the tensioning operation is convenient, the construction cost can be reduced, and the construction tensioning time is shortened.

The technical characteristics of the anchor box type anchor structure inhaul cable and the tensioning construction method thereof are further described below with reference to the accompanying drawings and the embodiments.

Drawings

FIGS. 1-1 to 1-2: the structural schematic diagram of the anchor box type anchor structure inhaul cable of the embodiment of the invention is as follows:

1-1 are front cross-sectional views, and FIG. 1-2 are side views of FIG. 1-1;

fig. 2-1 to 2-2: the second embodiment of the invention is a schematic structural diagram of an anchor box type anchor structure stay cable;

fig. 2-1 is a front cross-sectional view, and fig. 2-2 is a side view of fig. 2-1;

fig. 3-1 to 3-3: an anchor box structure schematic diagram with a reaction structure according to a first embodiment:

fig. 3-1 is a front cross-sectional view, fig. 3-2 is a side view of fig. 3-1, and fig. 3-3 is a top view of fig. 3-1;

fig. 4-1 to 4-3: an anchor box structure with a reaction structure according to the second embodiment is one of the following:

fig. 4-1 is a front view, fig. 4-2 is a side view of fig. 4-1, and fig. 4-3 is a top view of fig. 4-1;

fig. 5-1 to 5-3: second embodiment of the present invention is a second structural schematic diagram of an anchor box with a reaction structure:

fig. 5-1 is a front view, fig. 5-2 is a side view of fig. 5-1, and fig. 5-3 is a top view of fig. 5-1;

fig. 6-1 to 6-2: a structural schematic diagram of the assembled form of the tensioning support tube of the first and second embodiments:

FIG. 6-1 is a front view, and FIG. 6-2 is a cross-sectional view A-A of FIG. 6-1;

fig. 7-1 to 7-2: two structural diagrams of the assembled form of the tensioning support tube of the first and second embodiments;

FIG. 7-1 is a front view, and FIG. 7-2 is a top view of FIG. 7-1;

fig. 8-1 to 8-2: three structural diagrams of the assembly of the tensioning support tube of the first and second embodiments:

FIG. 8-1 is a front view, and FIG. 8-2 is a top view of FIG. 8-1;

fig. 9-1 to 9-2: the assembly structure of the shoulder pole beams and the lower shoulder pole beam of the first embodiment and the second embodiment is schematically shown;

FIG. 9-1 is a front view, and FIG. 9-2 is a top view of FIG. 9-1;

fig. 10: the third embodiment of the invention is a cable structure schematic diagram of an anchor box type anchoring structure (a main section view, a structure with a thickened sealing device and an increased spherical support);

fig. 11-1 to 11-2: the fourth embodiment of the invention provides an anchor box type anchor structure inhaul cable and a construction method thereof, and a structure diagram (double-inhaul cable structure);

FIG. 11-1 is a front cross-sectional view, and FIG. 11-2 is a side view of FIG. 11-1;

fig. 12-1 to 12-3: an anchor box structure schematic diagram with a reaction structure in a fourth embodiment:

fig. 12-1 is a front view, fig. 12-2 is a side view of fig. 12-1, and fig. 12-3 is a top view of fig. 12-1;

fig. 13-1 to 13-2: the fifth embodiment of the invention provides an anchor box type anchor structure inhaul cable and a construction method thereof, and a structure diagram (double inhaul cable structure) of the fifth embodiment of the invention;

FIG. 13-1 is a front cross-sectional view, and FIG. 13-2 is a side view of FIG. 13-1;

fig. 14-1 to 14-3: an anchor box structure schematic diagram (double-guy cable structure) with a counterforce structure in the fifth embodiment:

fig. 14-1 is a front sectional view, fig. 14-2 is a side view of fig. 14-1, and fig. 14-3 is a top view of fig. 14-1;

fig. 15: a general inhaul cable structure and a general tensioning mechanism are schematically shown (a main cross section);

fig. 16-1 to 16-2: schematic structural diagram (main sectional view and side view) of a common fork ear inhaul cable:

fig. 16-1 is a front sectional view, and fig. 16-2 is a side view of fig. 16-1.

In FIGS. 1-1 to 14-3:

1-anchor box, 1 A-Anchor box I and 1 b-anchor box II;

101-bridge deck boards, 102-anchor box side boards, 103-anchor backing plates, 104 a-steel guide pipes I, 104 b-steel guide pipes II, 1041-integrated steel guide pipe steps, 1042-combined steps, 105-front and rear sealing plates, 106-anchor box upper sealing plates and 107-counterforce structure lug plates;

2-stay cable anchorage, 3-anchor nut, 4-tension support cylinder, 41-tension support cylinder I, 42-tension support cylinder II, 43-tension support cylinder III, 5-pin, 6-tension fork ear, 7-tension pull rod, 8-shoulder pole beam, 9-temporary lock nut, 10-tension supporting leg, 11-tension jack, 12-tension nut, 13-lower shoulder pole beam and 14-spherical support;

201-thickening sealing device 202-inhaul cable body.

Fig. 15 to 16-2:

2-inhaul cable anchorage, 3-anchorage nut, 7-tension rod, 10-tension supporting leg, 11-jack, 12-tension nut,

15-conventional stiffening Liang Maoxiang, 16-stiffening Liang Erban, 17-box girder pin shafts and 18-stay cable fork lugs.

Description of the embodiments

An anchor box type anchor structure inhaul cable:

the cable with the anchor box type anchoring structure comprises an anchor box 1, a cable anchorage 2, an anchor nut 3 and a tensioning mechanism, wherein the anchor box is directly arranged on a stiffening girder bridge deck and is of an integral box-shaped structure, the anchor box is the anchor box 1 with a counterforce structure, and the anchor box 1 comprises a bridge deck 101, two anchor box side plates 102, an anchor backing plate 103, a steel conduit, a front sealing plate and a rear sealing plate 105 and an anchor box upper sealing plate 106;

the bridge deck 101 is used as an anchor box bottom plate, two anchor box side plates 102 are positioned at two sides of an anchor box and fixed on the bridge deck 101, an anchor backing plate 103 with an anchor hole in the middle is positioned at the middle of the two anchor box side plates 102 and fixedly connected with the two anchor box side plates 102, a steel guide pipe is fixed on the anchor backing plate 103, the axis is concentric with the anchor backing plate 103, a front sealing plate 105 and a rear sealing plate 105 are positioned at the upper parts of the front side and the rear side of the two anchor box side plates and fixedly connected with an anchor box upper sealing plate 106 positioned at the top of the anchor box side plates 102 to form a box structure;

the reaction structure is a reaction structure lug plate 107 arranged at the upper part of the anchor box or an integrated reaction step structure arranged on a steel conduit of the anchor box;

the tensioning mechanism comprises a tensioning support cylinder 4, a tensioning rod 7, a shoulder pole beam 8, tensioning supporting feet 10, pushing and tensioning jacks 11 and tensioning nuts 12 which are arranged on the counter-force structure;

in the installation state, the lower end of the inhaul cable penetrates into the steel guide pipe of the anchor box; the tensioning support cylinder 4 is sleeved outside the inhaul cable body 202, is assembled into a whole in a fitting way and penetrates into the steel guide pipe, the lower end of the tensioning support cylinder is propped against the upper end face of the inhaul cable anchorage 2, and the tensioning mechanism is arranged on a counterforce structure arranged on the upper portion of the anchor box.

The following embodiments are different depending on the structure of the anchor box and the reaction force structure provided at the upper portion of the anchor box.

Example 1

An anchor box type anchor structure inhaul cable with a counterforce structure as a counterforce structure lug plate and a tensioning construction method thereof are provided:

as shown in fig. 1-1 to 1-2, the anchor box type anchor structure inhaul cable with the counterforce structure lug plate comprises an anchor box I1 a with the counterforce structure, an inhaul cable anchorage 2, an anchor nut 3 and a tensioning mechanism;

the anchor box i 1a with a reaction structure comprises a bridge deck 101, anchor box side plates 102, anchor backing plates 103, steel guide pipes i 104a, front and rear sealing plates 105 and an anchor box upper sealing plate 106, and the reaction structure is a reaction structure lug 107 (see fig. 3-1 to 3-3) which is positioned on the anchor box upper sealing plate 106 of the anchor box i 1a and fixedly connected with the two anchor box side plates 102;

the tensioning mechanism comprises a tensioning support cylinder 4, tensioning fork lugs 6, a tensioning pull rod 7, a shoulder pole beam 8, tensioning supporting feet 10, a tensioning jack 11 and a tensioning nut 12;

in the installation state, the lower end of the inhaul cable penetrates into a steel conduit I104 a of the anchor box; the tensioning support cylinder 4 is sleeved outside the inhaul cable body 202, is assembled into a whole in a fitting way, penetrates into the steel conduit I104 a, and the lower end of the tensioning support cylinder is propped against the upper end face of the inhaul cable anchor 2; the tensioning fork lug 6 of the tensioning mechanism is sleeved on a counterforce structure lug plate 107 fixedly connected with two anchor box side plates 102 of the anchor box I1 a and is fixed through a pin shaft 5, the tensioning pull rod 7 is screwed on the tensioning fork lug 6, and the two halves of carrying pole beams 8 are aligned with a guy cable and are assembled in a laminating way through the tensioning pull rod hole (see figures 1-2).

The specific steps of the tensioning construction are as follows:

A. rope threading and installation tensioning mechanism

A1, threading:

firstly, penetrating the lower end of a inhaul cable into a steel conduit I104 a of an anchor box I1 a;

a2, installing a tensioning mechanism:

the tensioning support cylinder 4 is sleeved outside the inhaul cable and assembled into a whole, and also penetrates into the steel conduit I104 a, the lower end of the tensioning support cylinder 4 is propped against the upper end face of the anchorage device at the lower end of the inhaul cable, the tensioning fork lugs 6 are sleeved on the counterforce structure lug plate 107 positioned on the upper sealing plate 106 of the anchor box I1 a, and the pin shaft 5 is penetrated and fixed;

screwing a tension rod 7 on a tension fork lug 6, aligning the two halves of carrying pole beams 8 with a guy cable and a tension rod hole, fitting and assembling the two halves of carrying pole beams into a whole, clamping the two halves of carrying pole beams by using a bolt pair, pressing the two halves of carrying pole beams on the upper end surface of a tension supporting cylinder 4, and sequentially installing tension supporting feet 10, temporary locking nuts 9, a tension jack 11 and tension nuts 12;

B. stretching:

b1: stretching 1: after the installation is completed, the shoulder pole beam 8 is pushed to push the tensioning support cylinder 4 by the extension of the tensioning jack 11, and the tensioning support cylinder pushes the inhaul cable anchor 2 downwards;

b2: stretching 2: when the jack reaches the tensioning stroke, but the anchor is not exposed enough to the anchoring length of the nut, the temporary locking nut 9 is tightly screwed to the shoulder pole beam 8 to play a temporary anchoring role, so that the jack returns oil, the tensioning jack 11 and the tensioning nut 12 are continuously pushed and tensioned after returning, and the anchor nut 3 is installed after the anchor of the guy cable is pushed to the end face of the anchor backing plate 103 exposed out of the anchor box enough to the anchoring length of the nut;

b3: stretching 3: the pushing and the stretching are continued, the anchoring nut 3 can be screwed step by step in the stretching process, and the anchoring nut is screwed after the inhaul cable meets the requirement of the cable force, so that the stretching work is completed;

C. disassembling the tensioning mechanism:

after tensioning, the tensioning nut 12, the jack 11, the tensioning supporting leg 10, the temporary locking nut 9, the shoulder pole beam 8, the tensioning supporting cylinder 4, the tensioning pull rod 7, the pin shaft 5 and the tensioning fork lug 6 can be detached in sequence.

Example two

The counterforce structure is a steel conduit counterforce integrated step or an anchor box type anchoring structure inhaul cable with a threaded steel conduit and nut combined step:

as shown in fig. 2-1 to 2-2, the counterforce structure is an anchor box 1 of an anchor box type anchor structure inhaul cable of a steel conduit counterforce integrated step or a threaded steel conduit and nut combined step is an anchor box II 1b;

the anchor box II 1b comprises an bridge deck 101, two anchor box side plates 102, an anchor backing plate 103, a steel guide pipe II 104b, a front sealing plate 105, a rear sealing plate 105 and an anchor box upper sealing plate 106;

the reaction structure is a reaction integrated steel conduit step 1041 (see fig. 4-1 to 4-3) at the top of the steel conduit II 104b of the anchor box II 1b or a combined step 1042 (see fig. 5-1 to 5-3) formed by a threaded steel conduit and a nut;

the tensioning mechanism comprises a tensioning support cylinder 4, a tensioning rod 7, a shoulder pole beam 8, tensioning supporting feet 10, pushing and tensioning jacks 11, tensioning nuts 12 and a lower shoulder pole beam 13 which are arranged on the counter-force structure;

in the installation state, the two-half type lower-end shoulder pole beam 13 is wrapped around the outer circle of the lower end of the counterforce integrated steel conduit step 1041 of the steel conduit II 104b of the anchor box II 1b or the combined step 1042 formed by the threaded steel conduit and the nut, and is assembled into a whole in a fitting way, the two-half type shoulder pole beam 8 is wrapped around the inhaul cable, is assembled into a whole in a fitting way, the lower end surface is pressed against the upper end surface of the tensioning support cylinder 4, the tensioning rod 7 is inserted into the two side holes of the shoulder pole beam, and the tensioning nut 12 is installed below the lower-end shoulder pole beam; a tension arm brace 10, a temporary lock nut 9, a jack 11 and a tension nut 12 are sequentially installed on the shoulder pole beam 8 (see fig. 2-1 to 2-2, and fig. 2-1 to 2-2 show an anchor box type anchoring structure inhaul cable with a counterforce structure of which the counterforce structure is a steel conduit counterforce integrated step).

The specific steps of the tensioning construction are as follows:

A. rope threading and installation tensioning mechanism

A1, threading:

firstly, penetrating the lower end of a inhaul cable into a steel guide pipe II 104b of an anchor box II 1b;

a2, installing a tensioning mechanism:

the tensioning support cylinder 4 is sleeved outside the inhaul cable and assembled into a whole, and also penetrates into the steel guide pipe II 104 and b, the lower end of the tensioning support cylinder 4 is propped against the upper end face of an anchor at the lower end of the inhaul cable, the lower end shoulder pole beams 13 of the two halves are wrapped around the outer circle of the lower end of the counterforce integrated steel guide pipe step 1041 of the steel guide pipe II 104 of the anchor box II 1b or the combined step 1042 formed by the threaded steel guide pipe and the nut, and then the two halves are wrapped around the inhaul cable and assembled into a whole, and the lower end face is pressed against the upper end face of the tensioning support cylinder 4;

inserting a tension rod 7 into two side holes of the shoulder pole beam and the lower shoulder pole beam, and screwing a tension nut 12 under the lower shoulder pole beam 13; a tension supporting foot 10, a temporary locking nut 9, a tension jack 11 and a tension nut 12 are sequentially arranged on the shoulder pole beam 8;

B. stretching:

b1: stretching 1: after the installation is completed, the shoulder pole beam 8 is pushed to push the tensioning support cylinder 4 by the extension of the tensioning jack 11, and the tensioning support cylinder pushes the inhaul cable anchor 2 downwards;

b2: stretching 2: when the tensioning jack 11 reaches the tensioning stroke, but the anchor is not exposed enough to the anchoring length of the nut, the temporary locking nut 9 is tightly screwed on the shoulder pole beam 8 to play a temporary anchoring role, so that the tensioning jack returns oil, the tensioning jack 11 and the tensioning nut 12 are continuously pushed and tensioned after returning, and after the anchor of a guy cable is pushed to the end face of the anchor backing plate 103 exposed out of the anchor box enough to the anchoring length of the nut, the anchor nut 3 is installed;

b3: stretching 3: the pushing and the stretching are continued, the anchoring nut 3 can be screwed step by step in the stretching process, and the anchoring nut 3 is screwed after the inhaul cable meets the requirement of the cable force, so that the stretching work is completed;

C. disassembling the tensioning mechanism:

after tensioning, the tensioning nut 12, the tensioning jack 11, the tensioning supporting feet 10, the temporary locking nut 9, the shoulder pole beam 8, the tensioning supporting cylinder 4, the tensioning pull rod 7, the pin shaft 5 and the tensioning fork lug 6 can be detached in sequence.

In the first and second embodiments of the present invention, the tensioning support cylinder 4 is a tensioning support cylinder i 41 with a two-half ring structure, which can be attached to and detached from each other (see fig. 6-1 to 6-2), a tensioning support cylinder ii 42 with a ring structure with a U-shaped opening (see fig. 7-1 to 7-2), a tensioning support cylinder iii 43 with a two-half huff structure (see fig. 8-1 to 8-2), or a huff structure with split multiple petals (3 to 6 petals), which are connected together by a bolt connection or a self-locking slot.

The stretching supporting cylinder is longitudinally formed by overlapping (2-6 sections) or is formed by integrating (see fig. 7-1 and 8-1).

In the first embodiment and the second embodiment of the present invention, the shoulder pole beam 8 and the lower end shoulder pole beam 13 are both of two-half structures, and can be attached to and detached from each other, each of the shoulder pole beams is provided with an anchoring hole 801/1301 (see fig. 9-1 to 9-2) penetrating in the vertical middle direction on the horizontal plane, the anchoring hole is matched with the outer diameter of the cable or the steel pipe, so that the two-half shoulder pole beams can be embraced outside the cable or the steel pipe to form a whole, and two tension holes are provided at opposite positions on both sides of the anchoring hole.

Embodiment III:

anchor box type anchoring structure inhaul cable with thickened sealing device structure and spherical support structure

As shown in fig. 10, the basic structure of the anchor box type anchor structure inhaul cable with the thickened sealing device structure is the same as that of the first embodiment, and the tensioning mechanism comprises a tensioning support cylinder 4, a tensioning rod 7, a shoulder pole beam 8, tensioning supporting feet 10, a tensioning jack 11 and a tensioning nut 12 which are arranged on a counterforce structure; one difference from the embodiment is that: a thickening sealing device 201 is arranged below the tensioning support cylinder 4, and a spherical support 14 is arranged between the anchor nut 3 and the anchor backing plate; the cable anchorage device can be of a thickened sealing device structure, and the lower end of the cable anchorage device is pressed on the upper end face of the thickened sealing device when the tensioning support cylinder 4 is installed, so that the length of the tensioning support cylinder is shortened, the bending moment of the tensioning support cylinder is reduced, and the design and the installation use of the tensioning support cylinder are facilitated. A spherical support 14 is additionally arranged between the anchor nut 3 and the anchor backing plate, and the spherical support can adjust the condition that the inhaul cable is not perpendicular to the end face of the anchor backing plate due to construction and installation errors, so that the inhaul cable anchoring structure and the inhaul cable are uniformly stressed. The tensioning construction steps are the same as those of the first embodiment.

Embodiment four:

an anchor box type anchoring structure double-inhaul cable with a counterforce structure being a counterforce structure lug plate:

as shown in fig. 11-1 to 11-2, the reaction structure is the basic structure of the anchor box type anchor structure double-inhaul cable of the lug plate of the reaction structure, and the basic structure of the anchor box type anchor structure double-inhaul cable comprises an anchor box I1 a with the reaction structure, a inhaul cable anchorage 2, an anchor nut 3 and a tensioning mechanism;

one difference from the embodiment is that: the two anchored cables are arranged, so that the anchor box I1 a with the counterforce structure is provided with 2 steel pipes I104 a (see figures 12-1 to 12-3).

The tensioning construction steps are the same as those of the first embodiment.

Example five

The reaction structure is a steel conduit reaction integrated step or an anchor box type anchoring structure double-inhaul cable with a threaded steel conduit and nut combined step:

13-1 to 13-2, the counterforce structure is an anchor box type anchoring structure double-inhaul cable with steel conduit counterforce integrated steps or threaded steel conduit and nut combined steps, and the basic structure is the same as that of the second embodiment; the device still comprises an anchor box II 1b with a counterforce structure, a guy anchor 2, an anchor nut 3 and a tensioning mechanism;

the second difference from the embodiment is that: since there are two cables to be anchored, there are 2 steel pipes ii 104b on the anchor box ii 1b (see fig. 14-1 to 14-3).

The tensioning construction step is the same as that of the second embodiment.

The above list only some examples, all the embodiments using the technical solution of the claims of the present invention are all the protection scope of the patent application of the present invention.

Claims (8)

1. The utility model provides an anchor box anchor structure cable, includes anchor box (1), cable ground tackle (2), anchor nut (3) and tensioning mechanism, the anchor box directly sets up above the stiffening beam bridge deck, is whole box structure, its characterized in that: the anchor box is an anchor box (1) with a counterforce structure, and the anchor box (1) comprises a bridge deck (101), two anchor box side plates (102), an anchor backing plate (103), a steel guide pipe, a front sealing plate and a rear sealing plate (105) and an anchor box upper sealing plate (106);

the bridge deck (101) is used as an anchor box bottom plate, two anchor box side plates (102) are positioned at two sides of an anchor box and fixed on the bridge deck (101), an anchor base plate (103) with an anchor hole in the middle is positioned at the middle of the two anchor box side plates (102) and fixedly connected with the two anchor box side plates (102), a steel guide pipe is fixed on the anchor base plate (103), wherein the axis is concentric with the anchor base plate (103), and a front sealing plate and a rear sealing plate (105) are positioned at the upper parts of the front side and the rear side of the two anchor box side plates and fixedly connected with an anchor box upper sealing plate (106) positioned at the top of the anchor box side plates (102) to form a box structure;

the reaction structure is a reaction structure lug plate (107) arranged at the upper part of the anchor box or an integrated reaction step structure arranged on a steel conduit of the anchor box;

the tensioning mechanism comprises a tensioning support cylinder (4), a tensioning rod (7), a shoulder pole beam (8), tensioning supporting feet (10), a tensioning jack (11) and a tensioning nut (12) which are arranged on the counter-force structure;

in the installation state, the lower end of the inhaul cable body (202) penetrates into a steel conduit of the anchor box; the tensioning support cylinder (4) is sleeved outside the inhaul cable body (202) and assembled into a whole in a fitting way, the tensioning support cylinder also penetrates into the steel guide pipe, the lower end of the tensioning support cylinder is propped against the upper end face of the inhaul cable anchorage device (2), and the tensioning mechanism is arranged on a counterforce structure arranged on the upper portion of the anchor box.

2. An anchor box anchor structure cable as claimed in claim 1, wherein: the anchor box (1) with the counterforce structure is an anchor box I (1 a), the anchor box I (1 a) comprises a bridge deck (101), two anchor box side plates (102), an anchor backing plate (103), a steel conduit I (104 a), two front and rear sealing plates (105) and an anchor box upper sealing plate (106),

the counterforce structure is a counterforce structure lug plate (107) which is positioned on an anchor box upper sealing plate (106) of the anchor box I (1 a) and fixedly connected with the two anchor box side plates (102);

the tensioning mechanism comprises a tensioning support cylinder (4), tensioning fork lugs (6), a tensioning pull rod (7), a shoulder pole beam (8), tensioning supporting feet (10), a tensioning jack (11) and a tensioning nut (12);

in the installation state, a tensioning fork lug (6) of the tensioning mechanism is sleeved on a counterforce structure lug plate (107) fixedly connected with two anchor box side plates (102) of an anchor box I (1 a) and is fixed through a pin shaft (5), a tensioning rod (7) is screwed on the tensioning fork lug (6), and two halves of upper shoulder pole beams (8) are aligned with a guy cable and are assembled in a laminating mode through a tensioning rod hole.

3. An anchor box anchor structure cable as claimed in claim 2, wherein: a thickening sealing device (201) is arranged below the tensioning support cylinder (4), the inhaul cable anchorage is provided with the thickening sealing device, the lower end of the tensioning support cylinder (4) is pressed on the upper end face of the thickening sealing device during installation, and a spherical support (14) is arranged between the anchor nut (3) and the anchor backing plate (103).

4. An anchor box anchor structure cable as claimed in claim 1, wherein: the anchor box (1) with the counterforce structure is an anchor box II (1 b), and the anchor box II (1 b) comprises a bridge deck (101), two anchor box side plates (102), an anchor backing plate (103), a steel guide pipe II (104 b), a front sealing plate and a rear sealing plate (105) and an anchor box upper sealing plate (106);

the counterforce structure is a counterforce integrated steel conduit step (1041) of a steel conduit II (104 b) of the anchor box II (1 b) or a combined step (1042) formed by a threaded steel conduit and a nut;

the tensioning mechanism comprises a tensioning support cylinder (4), a tensioning rod (7), a shoulder pole beam (8), tensioning supporting feet (10), pushing and tensioning jacks (11), tensioning nuts (12) and a lower-end shoulder pole beam (13) which are arranged on the counter-force structure;

in the installation state, the two half-type lower-end shoulder pole beams (13) are wrapped around the outer circle of the lower end of a counterforce integrated steel conduit step (1041) of a steel conduit II (104 b) of an anchor box II (1 b) or a combined step (1042) formed by a threaded steel conduit and a nut, are assembled into a whole in a bonding way, the two half-type shoulder pole beams (8) are wrapped around a inhaul cable, are assembled into a whole in a bonding way, the lower end face is pressed against the upper end face of a tensioning support cylinder (4), a tensioning rod (7) is inserted into two side holes of the shoulder pole beams, and a tensioning nut (12) is arranged below the lower-end shoulder pole beams; and tensioning supporting feet (10), temporary locking nuts (9), tensioning jacks (11) and tensioning nuts (12) are sequentially arranged on the shoulder pole beam (8).

5. An anchor box type anchor structure cable as claimed in claim 1, 2, 3 or 4, wherein: the tensioning support cylinder (4) is a ring-shaped structure tensioning support cylinder I (41) which is formed by two halves, can be attached to and detached from each other, is a ring-shaped structure tensioning support cylinder II (42) with a U-shaped opening, is a half-shaped structure tensioning support cylinder III (43) which is formed by splicing 2 to 6 pieces, is integrally connected through a bolt connection or a self-locking slot mode, and is formed by overlapping 2 to 6 sections longitudinally.

6. An anchor box type anchor structure cable as claimed in claim 1, 2, 3 or 4, wherein: the utility model discloses a shoulder pole beam, including shoulder pole beam (8), lower extreme shoulder pole beam (13), anchor hole (801/1301) is run through to the vertical middle direction on the horizontal plane of every shoulder pole beam, and this anchor hole matches with cable or steel pipe external diameter, makes two half shoulder pole beam can hug and become an organic whole outside cable or steel pipe, opens at the opposite position in both sides of anchor hole has two to stretch out and draw the hole.

7. The tensioning construction method of the anchor box type anchor structure inhaul cable according to claim 2, wherein the method comprises the following steps: it comprises the following steps:

A. threading and installing a tensioning mechanism:

a1, threading:

firstly, the lower end of a inhaul cable is penetrated into a steel conduit I (104 a) of an anchor box I (1 a);

a2, installing a tensioning mechanism:

the tensioning support cylinder (4) is sleeved outside the inhaul cable and assembled into a whole, the tensioning support cylinder also penetrates into the steel conduit I (104 a), the lower end of the tensioning support cylinder (4) is propped against the upper end face of the inhaul cable anchorage, the tensioning fork lugs (6) are sleeved on the counterforce structure lug plates (107) positioned on the upper sealing plates (106) of the anchor boxes I (1 a), and the pin shafts (5) are penetrated and fixed;

screwing a tension rod (7) on a tension fork lug (6), aligning the two halves of carrying pole beams (8) with a guy cable and laminating and assembling the tension rod holes into a whole, clamping the tension rod by using a bolt pair, pressing the tension rod on the upper end surface of a tension supporting cylinder (4), and sequentially installing tension supporting feet (10), temporary locking nuts (9), a tension jack (11) and tension nuts (12);

B. stretching:

b1: stretching 1: after the installation is completed, the shoulder pole beam (8) is pushed to push the tensioning support cylinder (4) through the extension of the tensioning jack (11), and the tensioning support cylinder pushes the inhaul cable anchor (2) downwards;

b2: stretching 2: when the jack reaches the tensioning stroke, but the anchor is not exposed enough to the anchoring length of the nut, the temporary locking nut (9) is tightly screwed to the shoulder pole beam (8) to play a temporary anchoring role, so that the jack returns oil, the tensioning jack (11) and the tensioning nut (12) are continuously pushed and tensioned after returning, and after the anchor of the inhaul cable is pushed to the end face of the anchor backing plate (103) exposed out of the anchor box for enough nut anchoring length, the anchor nut (3) is installed;

b3: stretching 3: continuously pushing and tensioning, gradually screwing the anchor nut (3) in the tensioning process, and screwing the anchor nut after the inhaul cable reaches the cable force requirement to complete tensioning work;

C. disassembling the tensioning mechanism:

after tensioning is completed, the tensioning nut (12), the tensioning jack (11), the tensioning supporting leg (10), the temporary locking nut (9), the shoulder pole beam (8), the tensioning supporting cylinder (4), the tensioning pull rod (7), the pin shaft (5) and the tensioning fork lug (6) are sequentially disassembled.

8. The method for tensioning a cable with an anchor box anchor structure as set forth in claim 4, wherein: it comprises the following steps:

A. rope threading and installation tensioning mechanism

A1, threading:

firstly, penetrating the lower end of a inhaul cable into a steel guide pipe II (104 b) of an anchor box II (1 b);

a2, installing a tensioning mechanism:

the tensioning support cylinder (4) is sleeved outside a inhaul cable and assembled into a whole in a fitting way, the tensioning support cylinder also penetrates into the steel guide pipe II (104 b), the lower end of the tensioning support cylinder (4) is propped against the upper end face of a inhaul cable anchorage, the lower end shoulder pole beams (13) of the two halves are propped against the outer circle of the lower end of the combined step (1042) formed by the counterforce integrated steel guide pipe step (1041) of the steel guide pipe II (104 b) of the anchor box II (1 b) or the threaded steel guide pipe and the nut, the tensioning support cylinder and the steel guide pipe are assembled into a whole in a fitting way, the lower end face of the tensioning support cylinder are propped against the upper end face of the tensioning support cylinder (4);

inserting a tension rod (7) into two side holes of the shoulder pole beam and the lower shoulder pole beam, and screwing a tension nut (12) under the lower shoulder pole beam (13); a tension supporting foot (10), a temporary lock nut (9), a tension jack (11) and a tension nut (12) are sequentially arranged on the shoulder pole beam (8);

B. stretching:

b1: stretching 1: after the installation is completed, the shoulder pole beam (8) is pushed to push the tensioning support cylinder (4) through the extension of the tensioning jack (11), and the tensioning support cylinder pushes the inhaul cable anchor (2) downwards;

b2: stretching 2: when the tensioning jack (11) reaches the tensioning stroke, but the anchor is not exposed enough to the anchoring length of the nut, the temporary locking nut (9) is tightly screwed and pressed on the shoulder pole beam (8) to play a temporary anchoring role, so that the tensioning jack returns oil, the tensioning jack (11) and the tensioning nut (12) are continuously pushed and tensioned after returning, and after the anchor of the inhaul cable is pushed to the end face of the anchor backing plate (103) exposed out of the anchor box to the enough anchoring length of the nut, the anchor nut (3) is installed;

b3: stretching 3: continuously pushing and tensioning, gradually screwing the anchor nut (3) in the tensioning process, and screwing the anchor nut (3) after the inhaul cable reaches the cable force requirement to complete tensioning work;

C. disassembling the tensioning mechanism:

after tensioning is completed, the tensioning nut (12), the tensioning jack (11), the tensioning supporting leg (10), the temporary locking nut (9), the shoulder pole beam (8), the tensioning supporting cylinder (4), the tensioning pull rod (7), the pin shaft (5) and the tensioning fork lug (6) are sequentially disassembled.