Anchoring structure of segmental prefabricated assembled box girder

Abstract

The utility model discloses an anchoring structure of a segmental prefabricated assembly box girder, the anchoring structure is arranged at an anchoring cross beam of a segmental prefabricated assembly box, the anchoring structure is a sealed cavity formed among a sealer, a sealing cylinder and an anchor connecting column, and the cavity is filled with an anti-corrosion object. The inner ends of the rigid anchor columns are located in the anti-corrosion object section and close to the inner end of the sealing cylinder, one end of each steel strand penetrates through the inner end of the pre-buried guide pipe, the sealers are connected with the rigid anchor columns in a one-to-one mode, and anti-corrosion objects can permeate into the steel strands. And the service life of the steel strand is prolonged. The anchoring structure is fixed through the nut, the anchor piece connecting column is detachable, and corrosion prevention objects in the sealing cylinder are convenient to replace. And the construction is convenient and labor-saving during regular inspection.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to an anchoring structure of a segment prefabricated assembled box girder. Background Art

[0002] Urban bridge design and construction plans pay more and more attention to rapid construction, construction quality, landscape effects, etc. The segmental prefabricated concrete box girder technology has the advantages of fast construction speed, good construction quality, and little impact on existing traffic and surrounding environment. It is increasingly widely used in concrete bridge structures. A reliable temporary anchoring technology solution for segmental assembled box girders is an important guarantee for improving project quality and reducing safety risks.

[0003] An external prestressed system structure is provided in the segmental prefabricated concrete box girder, which is a steel strand pre-fixed in the segmental prefabricated box girder. The steel strand is mainly used for cable-stayed bridges and anchors with high corrosion resistance requirements. Traditional steel strands are connected to rigid anchor columns, and the rigid anchor columns are fixed to the anchor beams of the segmental prefabricated box through fixings. Since the traditional anchor structure is not easy to replace parts, the construction is time-consuming and laborious.

[0004] In addition, the traditional anchoring structure has insufficient anti-corrosion capabilities and needs to be improved.

[0005] Therefore, designers need to improve the traditional anchoring structure. Utility Model Content

[0006] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an anchoring structure for segmental prefabricated assembled box girders. The purposes of designing the anchoring structure are, firstly, to facilitate disassembly and assembly for replacement of parts, and secondly, to increase the service life of the anchoring structure.

[0007] In order to solve the above technical problems, the utility model is implemented by the following scheme: the utility model provides an anchoring structure of a segment prefabricated assembly box beam, the anchoring structure is arranged at the anchoring crossbeam of the segment prefabricated assembly box, and the anchoring structure includes:

[0008] A pre-buried conduit, pre-buried at the side end of the anchoring beam, having a passage passing through both ends;

[0009] A sealing cylinder is inserted into the passage and its outer end extends out of the outer end of the pre-buried conduit for a distance to form a step with the outer end of the pre-buried conduit;

[0010] An anchor plate, welded to the outer wall of the sealing tube and welded to the outer end of the embedded conduit, and having a cylindrical body on its outward side, and an external thread on the outside of the cylindrical body;

[0011] An anchor connecting column, the anchor connecting column is placed in the cylindrical cylinder, and the inner end concave surface of the anchor connecting column abuts against the outer end of the sealing cylinder;

[0012] A rigid anchor column, which is anchored to the anchor connecting column and extends outward for a distance;

[0013] A nut, screwed onto the external thread;

[0014] A front clip, fixed to the outer end of the nut, covers the outer end of the anchor connection column, and the protruding end of the rigid anchor column passes through the front clip;

[0015] A sealer is fixed to the inner end of the sealing cylinder, a sealed cavity is formed between the sealer, the sealing cylinder and the anchor connection column, the cavity is filled with anti-corrosion material, the inner end of the rigid anchor column is in the anti-corrosion material interval and close to the inner end of the sealing cylinder, one end of the steel strand passes through the inner end of the pre-buried conduit, the sealer is connected to the rigid anchor column one-to-one, and the anti-corrosion material can penetrate into the interior of the steel strand;

[0016] A rear clamp is fixed to the inner end of the sealing cylinder, covers the sealer, and the steel strand passes through the rear clamp.

[0017] Furthermore, one side of the front clip is concave to form a groove surface, and the other side is convex. A protective cover is fixed at a circle of steps on the edge of the convex surface, and the protective cover covers the rigid anchor column to form a protective structure.

[0018] Furthermore, the inner end of the pre-buried conduit is connected to a pre-buried diverter.

[0019] Furthermore, the antiseptic in the sealer is a first antiseptic grease.

[0020] Furthermore, the axial surface of the exposed section of the rigid anchor column is coated with a second anti-corrosion grease.

[0021] Furthermore, the steel strands are respectively a hot-extruded PE layer and a plurality of single-filament steel strands arranged in the hot-extruded PE layer from the outside to the inside.

[0022] Furthermore, the hot-extruded PE layer is filled with a third anti-corrosion grease.

[0023] Furthermore, the steel strand is an epoxy steel strand.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] 1. The anchoring structure of the utility model is fixed by nuts, the anchor connection column is detachable, and the anti-corrosion material in the sealing cylinder is convenient to replace. It is conducive to regular inspection, convenient construction and labor saving.

[0026] 2. The steel strands and rigid anchors of the utility model are both treated with anti-corrosion to increase the service life of the anchoring structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a construction structure diagram of the steel strand and anchoring structure of the utility model.

[0028] Figure 2 for Figure 1 Enlarged view of the left end anchoring structure.

[0029] Figure 3 This is a schematic diagram of the anchoring structure of the utility model.

[0030] Figure 4 It is a radial cross-sectional view of the steel strand of the utility model.

[0031] Markings in the accompanying drawings: anchoring beam 1, embedded structure 2, embedded steering gear 3, steel strand 4, first shock absorber 5, steering gear 6, second shock absorber 7, limit block 8, limit embedded conduit 9, protective cover 21, front clip 22, anchor connecting column 23, nut 24, anchor pad 25, embedded conduit 26, sealer 27, preservative 28, sealing tube 29, rigid anchor column 210, grease layer 41, monofilament steel strand 42, hot-extruded PE layer 43. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the utility model. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] Embodiment 1: The specific structure of the utility model is as follows:

[0034] Please refer to the attached Figure 1-4 The utility model provides an anchoring structure of a segmental prefabricated assembly box beam, wherein the anchoring structure 2 is arranged at the anchoring cross beam 1 of the segmental prefabricated assembly box, and the anchoring structure 2 comprises:

[0035] A pre-buried conduit 26, which is pre-buried at the side end of the anchoring beam 1, and has a passage passing through both ends;

[0036] A sealing cylinder 29 is inserted into the passage and its outer end extends out of the outer end of the pre-buried conduit 26 by a certain distance, and forms a step with the outer end of the pre-buried conduit 26;

[0037] The anchor plate 25 is welded to the outer wall of the sealing tube 29 and to the outer end of the pre-buried conduit, and has a cylindrical body on its outward side, and an external thread on the outside of the cylindrical body;

[0038] An anchor connecting column 23, the anchor connecting column 23 is placed in the cylindrical cylinder, and the inner end concave surface of the anchor connecting column 23 abuts against the outer end of the sealing cylinder 29;

[0039] A rigid anchor column 210, which is anchored to the anchor connection column 23 and extends outward for a distance;

[0040] A nut 24, screwed to the external thread;

[0041] A front clip 22 is fixed to the outer end of the nut 24, which covers the outer end of the anchor connection column 23, and the protruding end of the rigid anchor column 210 passes through the front clip 22;

[0042] The sealer 27 is fixed to the inner end of the sealing tube 29. A sealed cavity is formed between the sealer 27, the sealing tube 29 and the anchor connection column 23. The cavity is filled with an anticorrosive 28. The inner end of the rigid anchor column 210 is within the anticorrosive 28 and close to the inner end of the sealing tube 29. One end of the steel strand 4 passes through the inner end of the pre-buried conduit 26. The sealer 27 is connected to the rigid anchor column 210 one-to-one, and the anticorrosive can penetrate into the interior of the steel strand.

[0043] The rear clamping piece 211 is fixed to the inner end of the sealing tube 29 . The rear clamping piece 211 covers the sealer 27 . The steel strand 4 passes through the rear clamping piece 211 .

[0044] A preferred technical solution of this embodiment: one side of the front clip 22 is concave to form a groove surface, and the other side is convex, and a protective cover 21 is fixed at a circle of steps on the edge of the convex surface, and the protective cover 21 covers the rigid anchor column 210 to form a protective structure.

[0045] A preferred technical solution of this embodiment: the inner end of the pre-buried conduit 26 is connected to a pre-buried diverter 3 .

[0046] A preferred technical solution of this embodiment: the antiseptic 28 in the sealer 27 is a first antiseptic grease.

[0047] A preferred technical solution of this embodiment: the axial surface of the exposed section of the rigid anchor column 210 is coated with a second anti-corrosion grease.

[0048] A preferred technical solution of this embodiment: the steel strands 4 are respectively a hot-extruded PE layer 43 and a plurality of single-filament steel strands 42 arranged in the hot-extruded PE layer 43 from the outside to the inside.

[0049] A preferred technical solution of this embodiment: the hot-extruded PE layer 43 is filled with a third anti-corrosion grease 41 .

[0050] A preferred technical solution of this embodiment: the steel strand 4 is an epoxy steel strand.

[0051] Embodiment 2:

[0052] like Figure 1 As shown, Figure 1 The construction structure diagram of the steel strand and the anchor structure of the utility model is shown in FIG. The construction of the steel strand 4 is a high-to-low structure from left to right, and the left end of the steel strand 4 is turned to the horizontal direction through the embedded diverter 3 and connected to the anchor structure 2.

[0053] The inclined section of the steel strand 4 is supported and fixed by the first shock absorber 5, and a steering device 6 is installed at the corner between the inclined section of the steel strand 4 and the horizontal section at the right end of the steel strand 4 to stabilize the steel strand 4. A second shock absorber 7 and a limit block 8 are installed on the horizontal section at the right end of the steel strand 4, and a limit pre-buried conduit 9 is pre-buried inside the limit block 8. The steel strand 4 passes through the limit pre-buried conduit 9.

[0054] The first shock absorber 5 , the steering gear 6 , and the limit block 8 are all installed on the anchoring beam 1 .

[0055] Embodiment 3:

[0056] The utility model is convenient for replacing grease. Figure 3 As shown, the anchor plate 25 is welded to the outer wall of the sealing tube 29 and to the outer end of the embedded conduit 26, and the embedded conduit 26 is embedded in the anchor beam 1. The nut 24 is screwed on the cylindrical body of the anchor plate 25, and the anchor connection column 23 is restricted by the front clip 22. The anchor connection column 23 is equivalent to a blocking part, which blocks the outer end of the sealing tube 29 to prevent the anticorrosive 28 from leaking out. The anticorrosive 28 is the first anticorrosive grease.

[0057] The first anti-corrosion grease, the second anti-corrosion grease, and the third anti-corrosion grease are all anti-corrosion greases made of the same material.

[0058] One end of the steel strand 4 passes through the inner end of the pre-buried conduit 26, the sealer 27 is connected one-to-one with the rigid anchor column 210, and the anti-corrosion material can penetrate into the interior of the steel strand. Since the sealing tube 29 is in a high position, the anti-corrosion grease can enter the interior of the steel strand 4. Since the anti-corrosion grease is added regularly, the service life of the steel strand 4 can be extended.

[0059] In summary, the anchoring structure of the utility model is fixed by nuts, the anchor connection column is detachable, and the anti-corrosion material in the sealing tube is easy to replace. It is convenient and labor-saving to carry out regular inspection. The steel strand and the steel anchor of the utility model are both anti-corrosion treated to increase the service life of the anchoring structure.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An anchoring structure of a segmental prefabricated assembly box beam, the anchoring structure (2) being arranged at an anchoring crossbeam (1) of the segmental prefabricated assembly box, characterized in that: The anchoring structure (2) comprises: A pre-buried conduit (26) is pre-buried at the side end of the anchoring beam (1), and has a passage passing through both ends; A sealing cylinder (29) is inserted into the passage and its outer end extends a certain distance beyond the outer end of the pre-buried conduit (26) to form a step with the outer end of the pre-buried conduit (26); An anchor plate (25) is welded to the outer wall of the sealing tube (29) and to the outer end of the pre-buried conduit, and has a cylindrical body on its outward side, and an external thread on the outside of the cylindrical body; An anchor connecting column (23), the anchor connecting column (23) is placed in the cylindrical body, and the inner end concave surface of the anchor connecting column (23) abuts against the outer end of the sealing cylinder (29); A rigid anchor column (210), the rigid anchor column (210) being anchored to the anchor connecting column (23) and extending outwards for a distance; A nut (24) screwed onto the external thread; A front clip (22) is fixed to the outer end of the nut (24) and covers the outer end of the anchor connection column (23). The protruding end of the rigid anchor column (210) passes through the front clip (22); A sealer (27) is fixed to the inner end of the sealing tube (29); a sealed cavity is formed between the sealer (27), the sealing tube (29) and the anchor connection column (23); the cavity is filled with an anti-corrosion material (28); the inner end of the rigid anchor column (210) is within the anti-corrosion material (28) interval and close to the inner end of the sealing tube (29); one end of the steel strand (4) passes through the inner end of the pre-buried conduit (26); the sealer (27) is connected to the rigid anchor column (210) in a one-to-one manner, and the anti-corrosion material can penetrate into the interior of the steel strand; A rear clamping piece (211) is fixed to the inner end of the sealing cylinder (29). The rear clamping piece (211) covers the sealer (27). The steel strand (4) passes through the rear clamping piece (211).

2. The anchoring structure of the segmental prefabricated assembled box girder according to claim 1 is characterized in that: One side of the front clamping piece (22) is concave to form a groove surface, and the other side is convex. A protective cover (21) is fixed at a circle of steps on the edge of the convex surface. The protective cover (21) covers the rigid anchor column (210) to form a protective structure.

3. The anchoring structure of the segmental prefabricated assembled box beam according to claim 1, characterized in that: The inner end of the pre-buried conduit (26) is connected to a pre-buried diverter (3).

4. The anchoring structure of the segmental prefabricated assembled box beam according to claim 1, characterized in that: The antiseptic (28) in the sealer (27) is a first antiseptic grease.

5. The anchoring structure of the segmental prefabricated assembled box girder according to claim 1, characterized in that: The axial surface of the exposed section of the rigid anchor column (210) is coated with a second anti-corrosion grease.

6. The anchoring structure of the segmental prefabricated assembled box girder according to claim 1, characterized in that: The steel strands (4) are, from the outside to the inside, a hot-extruded PE layer (43) and a plurality of single-filament steel strands (42) arranged in the hot-extruded PE layer (43).

7. The anchoring structure of the segmental prefabricated assembled box beam according to claim 6, characterized in that: The hot extruded PE layer (43) is filled with a third anti-corrosion grease (41).

8. The anchoring structure of the segmental prefabricated assembled box beam according to claim 1, characterized in that: The steel strand (4) is an epoxy steel strand.

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