CN112647429B

CN112647429B - Box girder with anchoring device and box girder bridge

Info

Publication number: CN112647429B
Application number: CN202011538446.1A
Authority: CN
Inventors: 蒋友富
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2022-07-26
Anticipated expiration: 2040-12-23
Also published as: CN112647429A

Abstract

The invention discloses a box girder with an anchoring device and a box girder bridge, and relates to the technical field of bridge reinforcement. According to the invention, through mutual matching of the concrete anchor block, the anchor plate, the stay cable sleeve, the anchor mechanism II and the reinforcing steel bar, a composite anchor structure can be formed through matching of the anchor plate, the stay cable sleeve and the concrete anchor block, and the composite anchor structure is convenient for the stay cable to be arranged on two sides of the box girder body, so that the effects of convenience in installation of the stay cable in the early stage and convenience in maintenance of the stay cable in the later stage are achieved, and the problem of complexity in building a maintenance platform is avoided.

Description

Box girder with anchoring device and box girder bridge

Technical Field

The invention relates to a box girder and a box girder bridge, relates to the technical field of bridge reinforcement, and particularly relates to a box girder with an anchoring device and a box girder bridge.

Background

The problems of downwarping and box girder cracking commonly exist in domestic and foreign prestressed concrete continuous box girder bridges, the traditional reinforcing method only delays the occurrence of bridge diseases and does not fundamentally solve the problems, and a stayed-cable system is adopted to reinforce the box girder bridge at present, and the system can effectively solve the defects of downwarping and shearing bearing capacity of a main girder span.

However, the existing stay cable installation and maintenance can only be carried out from the lower part of the box girder, and then an installation and maintenance rack needs to be additionally built, so that the construction of maintenance and installation is very complicated and very inconvenient, and meanwhile, after the box girder bridge bears various loads for a long time, the middle part of the box girder is extremely likely to have support vibration, and the problem of cracks is easily caused, so that potential safety hazards exist.

Disclosure of Invention

The invention provides a box girder with an anchoring device and a box girder bridge, wherein one purpose is to have the functions of convenient installation of a stay cable and later-stage convenient maintenance, and solve the problems that in the prior art, an installation and maintenance rack needs to be additionally built, and the construction is complicated and inconvenient; the other purpose is to solve the problems that the box girder bridge bears load for a long time and the middle downwarping bearing capacity is insufficient, so that the middle of the box girder is supported and the box girder bridge is prevented from cracking.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a box girder with an anchoring device and a box girder bridge with the same comprise a box girder body, wherein the interior of the box girder body is hollow, a rotating rod is fixedly arranged in the box girder body, the outer wall of the rotating rod is movably connected with a flat plate, both ends of the top of the box girder body are fixedly connected with a concrete block, the top of the concrete block is fixedly connected with a first anchoring mechanism and a second anchoring mechanism, the first anchoring mechanism comprises a concrete anchor block, the bottom end of the concrete anchor block is fixedly connected to the concrete block, the top end of the concrete anchor block is fixedly connected with an anchoring plate, the bottom of the anchoring plate extends into the concrete anchor block and is attached to the top of the concrete block, a notch is formed in the top of the anchoring plate, a pulling plate upper plate is welded at the top of the pulling plate sleeve, and stiffening ribs are arranged on both sides of the pulling plate sleeve, the top of the stiffening rib is fixedly connected with the upper pulling plate disc, and the bottom of the box girder body is provided with a pier stud.

The technical scheme of the invention is further improved as follows: the shear nails are arranged at one end, located inside the concrete anchor block, of the anchor pulling plate, a plurality of shear nails are arranged, an upper sleeve is arranged on the pulling plate upper disc, and the upper sleeve and the inhaul cable sleeve are in a coaxial relation.

The technical scheme of the invention is further improved as follows: the bottom fixedly connected with reinforcement of case roof beam body, firm groove has been seted up at the top of pier stud, the reinforcement sets up in firm inslot, just the both sides of reinforcement are run through and are seted up through-hole one, the inner wall both sides in firm groove all are provided with the through-hole two of seting up on the pier stud, the internal diameter value homogeneous phase of through-hole one and through-hole two equals.

The technical scheme of the invention is further improved as follows: the top fixedly connected with stand of pier stud, the stand is provided with two, and one of them the stand runs through the inside that the bottom of case roof beam body extended to the case roof beam body, the top of stand is slope form, just the top of stand contacts with dull and stereotyped bottom one end, dull and stereotyped top other end swing joint has flexible post.

The technical scheme of the invention is further improved as follows: the inner top wall of the box girder body is provided with a contraction groove, the inner bottom wall of the box girder body is provided with a clamping groove, the top end of the telescopic column is fixedly connected inside the contraction groove, the bottom end of the telescopic column is in a slope shape, the bottom end of the telescopic column is provided with a bayonet, and the clamping groove is arranged under the telescopic column.

The technical scheme of the invention is further improved as follows: one side of draw-in groove is provided with the spout, the inside sliding connection of spout has the dop, the one end fixedly connected with spring of dop, the other end fixed connection of spring is in the inboard of spout, just the other end of dop is slope form, the dop card is established in the draw-in groove.

The technical scheme of the invention is further improved as follows: the inside of concrete anchor block is provided with the reinforcing bar, the reinforcing bar extends to the inside of concrete block, the concrete anchor block passes through reinforcing bar and concrete block fixed connection, just the part of anchor mechanism two all is the same with the part of anchor mechanism one.

The technical scheme of the invention is further improved as follows: the first anchoring mechanism is arranged at the front end of the top of the concrete block, the second anchoring mechanism is arranged at the rear end of the top of the concrete block, and the first anchoring mechanism and the second anchoring mechanism are in a diagonal relationship.

The technical scheme of the invention is further improved as follows: the rotating rod and the flat plates are arranged in two numbers, and the two flat plates are in a symmetrical state with the central shaft of the box girder body.

The technical scheme of the invention is further improved as follows: the flat plate is in an inverted trapezoid shape, and the telescopic columns, the contraction grooves and the clamping grooves are all provided with a plurality of parts.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:

1. the invention provides a box girder with an anchoring device and a box girder bridge, wherein a concrete anchor block, an anchor plate, a cable sleeve, an anchoring mechanism II and a reinforcing steel bar are mutually matched, so that the anchor plate, the cable sleeve and the concrete anchor block are matched to form a composite anchoring structure, the composite anchoring structure is convenient for a stay cable to be arranged on two sides of a box girder body, the effects of convenient installation of the stay cable in the early stage and convenient maintenance of the stay cable in the later stage are achieved, the problem of fussy construction and maintenance of a maintenance platform is avoided, and meanwhile, the landscape effect after the stay cable is arranged is better due to the design of the anchoring mechanism I and the anchoring mechanism II.

2. The invention provides a box girder with an anchoring device and a box girder bridge, wherein a flat plate, an upright post, a telescopic post, a clamping groove and a clamping head are mutually matched, so that after the upright post is inserted into a box girder body, the other end of the flat plate can be in a sinking state under the action of the upright post, and further the bottom end of the telescopic post can be clamped on the clamping head by sinking of the flat plate, the effect of supporting the middle part of the box girder body after the telescopic post is stabilized is achieved, and the problem of insufficient downwarping bearing capacity in the middle part of the box girder body is avoided.

3. The invention provides a box girder with an anchoring device and a box girder bridge, wherein a reinforcing member, a stabilizing groove, a first through hole and a second through hole are matched with each other, so that the first through hole and the second through hole can be communicated after the reinforcing member is placed in the stabilizing groove, a constructor can conveniently reinforce the through holes, the effect that the box girder body is firmer after being connected with a pier stud is achieved, and the problem that the box girder body bears load and deviates is avoided.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 4 is a schematic structural view of the anchoring mechanism of the present invention;

FIG. 5 is a schematic view of an unused configuration of the flat panel of the present invention;

FIG. 6 is a schematic view of the flat panel of the present invention after use;

FIG. 7 is an enlarged schematic view of the structure at the point A;

FIG. 8 is a schematic view of a rebar structure of the present invention;

FIG. 9 is a schematic top view of a concrete block according to the present invention;

FIG. 10 is a schematic top view of a flat panel of the present invention.

In the figure: 1. a box girder body; 2. a rotating rod; 3. a flat plate; 4. a concrete block;

5. a first anchoring mechanism; 51. a concrete anchor block; 52. an anchor plate; 53. a notch; 54. a cable sleeve; 55. pulling a plate and feeding the plate; 56. a stiffening rib; 57. shear nails; 58. an upper sleeve; 59. reinforcing steel bars;

6. a second anchoring mechanism; 7. pier studs; 8. a reinforcement; 9. a stabilizing groove; 10. a first through hole; 11. a second through hole; 12. a column; 13. a telescopic column; 14. a shrinking slot; 15. a bayonet; 16. a card slot; 17. a chute; 18. clamping a head; 19. a spring.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example 1

In a first aspect, as shown in fig. 1-10, the present invention provides a box girder with an anchoring device and a box girder bridge, including a box girder body 1, the interior of the box girder body 1 is hollow, a rotating rod 2 is fixedly installed inside the box girder body 1, a flat plate 3 is movably connected to the outer wall of the rotating rod 2, concrete blocks 4 are fixedly connected to both ends of the top of the box girder body 1, an anchoring mechanism one 5 and an anchoring mechanism two 6 are fixedly connected to the top of the concrete blocks 4, the anchoring mechanism one 5 includes a concrete anchor block 51, the bottom end of the concrete anchor block 51 is fixedly connected to the concrete block 4, an anchor plate 52 is fixedly connected to the top end of the concrete anchor block 51, the bottom of the anchor plate 52 extends into the interior of the concrete anchor block 51 and is attached to the top of the concrete block 4, a notch 53 is formed in the top of the anchor plate 52, a sleeve 54 is arranged inside the notch 53, an upper pulling plate disc 55 is welded at the top of the pulling cable sleeve 54, stiffening ribs 56 are arranged on two sides of the pulling cable sleeve 54, the top of each stiffening rib 56 is fixedly connected with the upper pulling plate disc 55, a pier column 7 is arranged at the bottom of the box girder body 1, a plurality of shear nails 57 are arranged at one end of each anchoring pulling plate 52 inside the concrete anchor block 51, an upper sleeve 58 is arranged on the upper pulling plate disc 55, and the upper sleeve 58 and the pulling cable sleeve 54 are in a coaxial relation.

In this embodiment, can form compound anchor structure through anchor plate 52, cable sleeve 54 and the cooperation of concrete anchor block 51, and then compound anchor structure be convenient for the stay cable install in the both sides of box girder body 1, reach the effect that earlier stage stay cable is convenient for install and later stage stay cable easy access, avoided building the loaded down with trivial details problem of maintenance platform.

Example 2

As shown in fig. 1-3, on the basis of embodiment 1, the present invention provides a technical solution: preferably, bottom fixedly connected with reinforcement 8 of case roof beam body 1, firm groove 9 has been seted up at pier stud 7's top, reinforcement 8 sets up in firm groove 9, and reinforcement 8's both sides are run through and have been seted up through-hole 10, firm groove 9's inner wall both sides all are provided with two 11 through-holes of seting up on pier stud 7, the internal diameter value homogeneous phase of through-hole 10 and two 11 through-holes equals, its main effect is that reinforcement 8 places behind the inside of firm groove 9, through-hole 10 and two 11 through-holes can communicate with each other, and then be convenient for constructor consolidates the through-hole, reach more firm effect after case roof beam body 1 and the connection of pier stud 7.

Example 3

As shown in fig. 1, 3, 5, 6 and 7, the present invention provides a technical solution based on embodiment 1: preferably, the top of the pier stud 7 is fixedly connected with two upright posts 12, the upright posts 12 are provided, one upright post 12 penetrates through the bottom of the box girder body 1 and extends to the inside of the box girder body 1, the top end of the upright post 12 is in a slope shape, the top end of the upright post 12 is in contact with one end of the bottom of the flat plate 3, the other end of the top of the flat plate 3 is movably connected with a telescopic post 13, the inner top wall of the box girder body 1 is provided with a contraction groove 14, the inner bottom wall of the box girder body 1 is provided with a clamping groove 16, the top end of the telescopic post 13 is fixedly connected inside the contraction groove 14, the bottom end of the telescopic post 13 is in a slope shape, the bottom end of the telescopic post 13 is provided with a bayonet 15, the clamping groove 16 is arranged under the telescopic post 13, one side of the clamping groove 16 is provided with a sliding groove 17, the inside of the sliding groove 17 is slidably connected with a clamping head 18, one end of the clamping head 18 is fixedly connected with a spring 19, the other end of the spring 19 is fixedly connected to the inner side of the sliding groove 17, and the other end of dop 18 is slope form, dop 18 card is established in bayonet 15, its main effect is that stand 12 inserts the inside back of case roof beam body 1, dull and stereotyped 3 can lead to the other end state that sinks to appear because of the effect of stand 12, and then the one end of dull and stereotyped 3 sinks and to make the bottom card of flexible post 13 establish on dop 18, reach the effect that supports case roof beam body 1 middle part after flexible post 13 stabilizes, avoid the problem that the downwarping bearing capacity is not enough to appear in case roof beam body 1 middle part.

Example 4

As shown in fig. 1, 2, 4, 8 and 9, the present invention provides a technical solution based on embodiment 1: preferably, reinforcing steel bars 59 are arranged inside the concrete anchor block 51, the reinforcing steel bars 59 extend into the concrete block 4, the concrete anchor block 51 is fixedly connected with the concrete block 4 through the reinforcing steel bars 59, parts of the anchoring mechanisms II 6 are the same as those of the anchoring mechanisms I5, the anchoring mechanisms I5 are arranged at the front end of the top of the concrete block 4, the anchoring mechanisms II 6 are arranged at the rear end of the top of the concrete block 4, the anchoring mechanisms I5 and the anchoring mechanisms II 6 are in diagonal relation, the main function of the anchoring mechanisms is that the reinforcing steel bars 59 are designed to be beneficial to fixing the concrete anchor block 51, so that a box girder bridge is convenient to be reinforced by a stay cable, and meanwhile, the position design of the anchoring mechanisms II 6 of the anchoring mechanisms I5 is beneficial to the good landscape effect after the stay cable is installed.

Example 5

As shown in fig. 1, 3, 5, 6 and 10, the present invention provides a technical solution based on embodiment 1: preferably, bull stick 2 and dull and stereotyped 3 all are provided with two, and two dull and stereotyped 3 use the center pin of case roof beam body 1 as the symmetric state, and dull and stereotyped 3 is for falling the trapezoidal form, and flexible post 13, shrink slot 14 and draw-in groove 16 all are provided with a plurality of, and its main effect is the design of a plurality of flexible posts 13, does benefit to case roof beam body 1 middle part more and supports stable effect to avoid the problem of warping down in the middle part of case roof beam body 1.

The working principle of the box girder and the box girder bridge with the anchoring device will be described in detail below.

As shown in fig. 1-10, the anchor plate 52 and the cable sleeve 54 can cooperate with the concrete anchor block 51 to form a composite anchoring structure, and then the composite anchoring structure can place the stay cables installed at the later stage on both sides of the box girder body 1, which facilitates the installation of the stay cables at the earlier stage and the maintenance of the stay cables at the later stage, and simultaneously, the construction is also convenient, and the landscape effect is good after the stay cables at the later stage are installed by using the cooperation of the first anchoring mechanism 5 and the second anchoring mechanism 6;

as shown in fig. 1-10, after the reinforcing member 8 at the bottom of the box girder body 1 is placed in the stabilizing groove 9, the first through hole 10 and the second through hole 11 can be communicated, so that a constructor can place reinforcing ribs in the through holes, and pour concrete after the reinforcing ribs are placed and fixed, so that the box girder body 1 and the pier stud 7 are connected more firmly;

as shown in fig. 1-10, when box girder body 1 is placed on pier stud 7, upright post 12 can be inserted into box girder body 1, and then upright post 12 inserts and makes the one end of dull and stereotyped 3 sink, when dull and stereotyped 3 sinks, can drive flexible post 13 to remove, when flexible post 13 removes back bottom contact dop 18, dop 18 accessible spout 17 contracts, and then when flexible post 13 continues the downstream, dop 18 can block to establish in bayonet 15 because of the effect of spring 19, flexible post 13 can stabilize in box girder body 1's inside after bayonet 15 blocks to establish, and then a plurality of flexible posts 13 can support the interior middle part of box girder body 1, avoid the middle part of box girder body 1 to lead to the problem that the crack appears because of weight.

The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, it is possible to modify or improve the optical characteristics of the optical fiber without departing from the spirit of the present invention.

Claims

1. The utility model provides a case roof beam with anchor, includes case roof beam body (1), the inside of case roof beam body (1) is hollow form, its characterized in that: the box girder comprises a box girder body (1), wherein a rotating rod (2) is fixedly arranged inside the box girder body (1), a flat plate (3) is movably connected to the outer wall of the rotating rod (2), concrete blocks (4) are fixedly connected to two ends of the top of the box girder body (1), a first anchoring mechanism (5) and a second anchoring mechanism (6) are fixedly connected to the top of each concrete block (4), the first anchoring mechanism (5) comprises a concrete anchor block (51), the bottom end of each concrete anchor block (51) is fixedly connected to the corresponding concrete block (4), an anchor pull plate (52) is fixedly connected to the top end of each concrete anchor block (51), the bottom of each anchor pull plate (52) extends into the corresponding concrete anchor block (51) and is attached to the top of the corresponding concrete block (4), a notch (53) is formed in the top of each anchor pull plate (52), a cable sleeve (54) is arranged inside each notch (53), the top welding of cable sleeve (54) has arm-tie hanging dish (55), just the both sides of cable sleeve (54) all are provided with stiffening rib (56), the top and the arm-tie hanging dish (55) fixed connection of stiffening rib (56), just the bottom of case roof beam body (1) is provided with pier stud (7), the top fixedly connected with stand (12) of pier stud (7), stand (12) are provided with two, and one of them stand (12) run through the bottom of case roof beam body (1) and extend to the inside of case roof beam body (1), the top of stand (12) is slope form, and the top of stand (12) contacts with the bottom one end of dull and stereotyped (3), the top other end swing joint of dull and stereotyped (3) has flexible post (13), shrink groove (14) have been seted up to the interior roof of case roof beam body (1), draw-in groove (16) have been seted up to the interior diapire of case roof beam body (1), the top end of the telescopic column (13) is fixedly connected inside the contraction groove (14), the bottom end of the telescopic column (13) is in a slope shape, the bottom end of the telescopic column (13) is provided with a bayonet (15), and the clamping groove (16) is arranged under the telescopic column (13).

2. A box girder with anchoring devices according to claim 1, characterised in that: shear nails (57) are arranged at one end, located inside the concrete anchor block (51), of the anchor pulling plate (52), a plurality of shear nails (57) are arranged, an upper sleeve (58) is arranged on the pulling plate upper disc (55), and the upper sleeve (58) and the inhaul cable sleeve (54) are in a coaxial relation.

3. The utility model provides a box girder bridge with anchor device which characterized in that: the box girder bridge comprises the box girder of any one of claims 1 to 2, wherein a reinforcing member (8) is fixedly connected to the bottom of the box girder body (1), a stabilizing groove (9) is formed in the top of the pier stud (7), the reinforcing member (8) is arranged in the stabilizing groove (9), a first through hole (10) is formed in each of two sides of the reinforcing member (8) in a penetrating manner, a second through hole (11) formed in the pier stud (7) is formed in each of two sides of the inner wall of the stabilizing groove (9), and the inner diameter values of the first through hole (10) and the second through hole (11) are equal to each other.

4. A box girder bridge with anchoring devices according to claim 3, wherein: one side of draw-in groove (16) is provided with spout (17), the inside sliding connection of spout (17) has dop (18), the one end fixedly connected with spring (19) of dop (18), the other end fixed connection of spring (19) is in the inboard of spout (17), just the other end of dop (18) is slope form, dop (18) card is established in bayonet socket (15).

5. A box girder bridge with anchoring means according to claim 3, wherein: the inside of concrete anchor block (51) is provided with reinforcing bar (59), reinforcing bar (59) extend to the inside of concrete block (4), concrete anchor block (51) are through reinforcing bar (59) and concrete block (4) fixed connection, just the part of anchor mechanism two (6) all is the same with the part of anchor mechanism one (5).

6. A box girder bridge with anchoring devices according to claim 3, wherein: the first anchoring mechanism (5) is arranged at the front end of the top of the concrete block (4), the second anchoring mechanism (6) is arranged at the rear end of the top of the concrete block (4), and the first anchoring mechanism (5) and the second anchoring mechanism (6) are in a diagonal relation.

7. A box girder bridge with anchoring devices according to claim 3, wherein: the rotating rod (2) and the flat plate (3) are both provided with two plates, and the flat plate (3) is in a symmetrical state by taking the central shaft of the box girder body (1).

8. A box girder bridge with anchoring devices according to claim 3, wherein: the flat plate (3) is in an inverted trapezoid shape, and the telescopic columns (13), the contraction grooves (14) and the clamping grooves (16) are all provided with a plurality of parts.