Novel prestressed anchoring structure for bridge

Abstract

The utility model relates to the related technical field of bridge construction, in particular to a novel prestress anchoring structure for a bridge, which comprises the bridge, and an anchoring structure is arranged at one end of the bridge. According to the novel prestressed anchoring structure for the bridge, through the arrangement of the corrugated pipe, the steel strand, the anchor bearing plate, the first anchorage device plate, the first anchor clamping piece, the limiting plate and the jack, during construction, the anchor bearing plate is fixed in the bridge through bolts, one end of the anchor bearing plate is connected with one end of the corrugated pipe, and the steel strand in the corrugated pipe can penetrate through the anchor bearing plate; the jack is arranged on the first anchorage device plate and penetrates through a first through hole in the surface of one side of the first anchorage device plate, then the steel strand penetrating through the first anchorage device plate penetrates through the jack and the second anchorage device plate, the jack is started to pull the steel strand, and under the arrangement of the first anchor clamping piece and the second anchor clamping piece, the steel strand can only be pulled outwards and cannot move inwards; and when the jack pulls the steel strand to a specified pulling force, the jack automatically stops, so that the precise pre-stress tensioning work is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction related technical field especially relates to a new prestressed anchoring structure for bridge. BACKGROUND

[0002] Bridge construction refers to the process of building bridges according to design content, mainly including construction technology, construction organization, construction management, construction quality and other contents, bridge construction is very strict, every step must reach the index, so as to guarantee the safety of construction personnel and the safety after the follow-up bridge is open to traffic, prestressed anchoring structure is a very important structure in the process of bridge construction, which mainly applies the principle of prestressed tension, prestressed tension is a way of applying external prestress to the beam body, its principle is that before the beam bears load, a prestress opposite to the load action is applied, when the beam body is under load, the load first offsets this part of prestress, then the beam is stressed, mainly used for eliminating adverse bending moment, making the structure in a better compressive stress state, increasing the bearing capacity of the beam and improving the span of the beam, such prestressed anchoring structure greatly improves the bearing capacity of the bridge, therefore, a new prestressed anchoring structure for bridge is particularly needed.

[0003] However, the existing new prestressed anchoring structure for bridge, most of the anchoring structures cannot accurately control the size of prestress, secondly, most of the anchoring structures are troublesome when pouring concrete subsequently, and the construction difficulty is great. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a new prestressed anchoring structure for bridge to solve the problems of the existing new prestressed anchoring structure for bridge in the above background technology, most of the anchoring structures cannot accurately control the size of prestress, secondly, most of the anchoring structures are troublesome when pouring concrete subsequently, and the construction difficulty is great.

[0005] To achieve the above object, the utility model provides the following technical scheme: a new prestressed anchoring structure for bridge, including bridge, the one end of bridge is provided with anchoring structure;

[0006] The anchoring structure includes a cavity, a corrugated tube, a steel strand, a spiral rib, an anchor plate, a reserved groove, a first anchor plate, a first through hole, a first anchor clip, a limit plate, a connecting groove, a jack, a second anchor plate, a second through hole and a second anchor clip, a cavity is opened inside the bridge, a corrugated tube is fixedly installed inside the cavity, a steel strand is arranged inside the corrugated tube, a spiral rib is arranged inside the bridge, one end of the corrugated tube is fixedly connected to the anchor plate, a reserved groove is opened on one side surface of the anchor plate, a first through hole is opened on one side surface of the first anchor plate, a first anchor clip is arranged on one end of the first anchor plate, a limited plate is connected to one side surface of the limiting plate, a connecting groove is opened on one side surface of the limiting plate, and one end of the steel strand is connected to the jack.

[0007] Preferably, a second anchor plate is connected to one side surface of the jack, a second through hole is opened on one side surface of the second anchor plate, and a second anchor clip is provided at one end of the second anchor plate.

[0008] Preferably, the cavities are opened at equal intervals at the bottom of the bridge, and the anchor plates are fixedly connected to the bridge by bolts.

[0009] Preferably, seven groups of the first through holes are opened at equal intervals on one side surface of the first anchor plate, seven groups of the first anchor clips are provided, and the first anchor clips are tapered as a whole.

[0010] Preferably, seven groups of connecting grooves are provided at equal intervals on one side surface of the limiting plate, and the size of the connecting grooves matches the size of the first through holes.

[0011] Preferably, the steel strand is formed by twisting seven strands of fine steel wire, and the material of the first anchor plate is steel alloy.

[0012] Preferably, seven groups of the second through holes are opened at equal intervals on one side surface of the second anchor plate, and the material of the second anchor plate is steel alloy.

[0013] Preferably, seven groups of the second anchor clips are provided, and the second anchor clips are tapered as a whole.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the bridge uses a new prestressed anchoring structure, through the arrangement of a cavity, a corrugated pipe, a steel strand, a spiral rib, an anchor plate, a reserved groove, a first anchor plate, a first through hole, a first anchor clip, a limit plate, a connecting groove, a jack, a second anchor plate, a second through hole, and a second anchor clip. During construction, the anchor plate is first fixed to the bridge with bolts, at which point one end of the anchor plate is connected to one end of the corrugated pipe, and the steel strand inside the corrugated pipe can pass through the anchor plate and the first through hole on one side surface of the first anchor plate, and then the steel strand passing through the first anchor plate is fixed to the bridge. It passes through the jack and the second anchor plate, and finally one end of the steel strand comes out from the second through hole. The jack is started, and the jack begins to pull the steel strand. Under the setting of the first anchor clip and the second anchor clip, the steel strand can only be pulled outward and cannot move inward. When the jack pulls the steel strand to the specified tension, the jack automatically stops. Under the action of the first anchor clip and the second anchor clip, the steel strand cannot retract, thus completing the prestressed precise tensioning work. After the tensioning work is completed, the jack is removed and the excess steel strand is cut off. High-strength concrete is poured through the reserved groove, which reduces the construction difficulty and improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cross-sectional appearance structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the bridge and cavity cooperating with each other in the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the bellows and spiral ribs cooperating with each other in the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the mutual cooperation between the limit plate and the connecting groove of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure in which the second anchor plate and the second through hole cooperate with each other in the present invention.

[0020] In the figure: 1. Bridge; 2. Anchoring structure; 201. Cavity; 202. Bellows; 203. Steel strand; 204. Spiral reinforcement; 205. Anchor plate; 206. Reserved groove; 207. First anchor plate; 208. First through hole; 209. First anchor clip; 210. Limiting plate; 211. Connecting groove; 212. Jack; 213. Second anchor plate; 214. Second through hole; 215. Second anchor clip. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5 , the utility model provides a technical solution: a new prestressed anchoring structure for a bridge, comprising a bridge 1, an anchoring structure 2 is provided at one end of the bridge 1;

[0023] The anchoring structure 2 includes a cavity 201, a bellows 202, a steel strand 203, a spiral rib 204, an anchor plate 205, a reserved groove 206, a first anchor plate 207, a first through hole 208, a first anchor clip 209, a limit plate 210, a connecting groove 211, a jack 212, a second anchor plate 213, a second through hole 214 and a second anchor clip 215. The interior of the bridge 1 is provided with a cavity 201, a bellows 202 is fixedly installed inside the cavity 201, a steel strand 203 is arranged inside the bellows 202, a spiral rib 204 is arranged inside the bridge 1, one end of the bellows 202 is fixedly connected to the anchor plate 205, a reserved groove 206 is arranged on one side surface of the anchor plate 205, and the anchor plate 205 is provided with a reserved groove 206. One side surface of 05 is connected to a first anchor plate 207, a first through hole 208 is provided on one side surface of the first anchor plate 207, a first anchor clip 209 is provided at one end of the first anchor plate 207, a side surface of the first anchor plate 207 is connected to a limiting plate 210, a side surface of the limiting plate 210 is provided with a connecting groove 211, one end of the steel strand 203 is connected to a jack 212, through the cavity 201, the bellows 202, the steel strand 203, the spiral rib 204, the anchor plate 205, the reserved groove 206, the first anchor plate 207, the first through hole 208, the first anchor clip 209, the limiting plate 210, the connecting groove 211, the jack 212, the second anchor plate 213, the second through hole 214 and the second The setting of the anchor clip 215 is that when prestressing is carried out, one end of the anchor plate 205 is clamped together with the corrugated pipe 202, and then the anchor plate 205 is fixed to the bridge 1 with bolts. The anchor plate 205 can anchor the end of the steel strand 203, and the spiral reinforcement 204 can enhance the tensile strength of the concrete bearing member. Then, one end of the steel strand 203 is passed through the first through hole 208 opened on the surface of the anchor plate 205 and the first anchor plate 207. The first anchor clip 209 at one end of the first anchor plate 207 can limit the movement of the steel strand 203, so that the steel strand 203 can only be pulled out but cannot be retracted. At this time, the steel strand 203 is allowed to pass through the jack 212 and the second anchor plate 213, so that the steel strand The wire 203 comes out from the second through hole 214, so that the jack 212 can tension the steel strand 203, and the second anchor clip 215 can also limit the movement of the steel strand 203, so that the steel strand 203 can only be pulled out but cannot be retracted. When the steel strand 203 is tensioned, the jack 212 is started, and the jack 212 pulls the steel strand 203 outward. When the specified tension is reached, the jack 212 automatically stops, so that precise tensioning work can be carried out with good tensioning effect. After the tensioning is completed, the jack 212 is removed and the excess steel strand 203 is cut off. Finally, the concrete pouring work can be carried out through the reserved groove 206. The pouring is very convenient, which reduces the difficulty of construction and improves the efficiency of construction.

[0024] Furthermore, one side surface of the jack 212 is connected to a second anchor plate 213, one side surface of the second anchor plate 213 is provided with a second through hole 214, and one end of the second anchor plate 213 is provided with a second anchor clip 215. Through the setting of the jack 212, the jack 212 can pull the steel strand 203 and pull the steel strand 203 to a specified tension.

[0025] Furthermore, the cavities 201 are opened at equal intervals at the bottom of the bridge 1 , and the anchor plates 205 are fixedly connected to the bridge 1 by bolts. Through the setting of the anchor plates 205 , the anchor plates 205 can anchor the ends of the steel strands 203 .

[0026] Furthermore, seven groups of first through holes 208 are evenly spaced on one side surface of the first anchor plate 207, and seven groups of first anchor clips 209 are provided, and the first anchor clips 209 are tapered as a whole. Through the setting of the first anchor clips 209, the first anchor clips 209 can restrict the steel strand 203 so that the steel strand 203 can only be pulled out and cannot be retracted.

[0027] Furthermore, seven groups of connecting grooves 211 are evenly spaced on one side surface of the limiting plate 210, and the size of the connecting grooves 211 is consistent with the size of the first through hole 208. Through the setting of the limiting plate 210, the limiting plate 210 can limit the displacement of the first anchor clip 209 during the tensioning process.

[0028] Furthermore, the steel strand 203 is made of seven twisted strands of fine steel wire, and the material of the first anchor plate 207 is steel alloy. Through the setting of the first anchor plate 207, the first anchor plate 207 facilitates the installation of the first anchor clip 209, so that the first anchor clip 209 can restrict the steel strand 203.

[0029] Furthermore, seven groups of second through holes 214 are evenly spaced on one side surface of the second anchor plate 213. The material of the second anchor plate 213 is steel alloy. Through the setting of the second anchor plate 213, the second anchor plate 213 facilitates the installation of the second anchor clip 215, so that the second anchor clip 215 can restrict the steel strand 203.

[0030] Furthermore, seven groups of second anchor clips 215 are provided, and the second anchor clips 215 are tapered as a whole. Through the provision of the second anchor clips 215, the second anchor clips 215 can restrict the steel strand 203 so that the steel strand 203 can only be pulled out and cannot be retracted.

[0031] Working principle: when prestressed tension is carried out, one end of the anchor pad plate 205 is clamped with the corrugated pipe 202, then the anchor pad plate 205 is fixed in the bridge 1 by bolts, the anchor pad plate 205 can anchor the end of the steel strand 203, and the spiral rib 204 can enhance the tensile capacity of the concrete bearing member, then the end of the steel strand 203 passes through the first through hole 208 on the surface of the anchor pad plate 205 and the first anchor plate 207, the first anchor clamp 209 at one end of the first anchor plate 207 can limit the movement of the steel strand 203, so that the steel strand 203 can only be pulled out and cannot be retracted, then the steel strand 203 penetrates the jack 212 and the second anchor plate 213, and the steel strand 203 comes out from the second through hole 214, so that the jack 212 can tension the steel strand 203, and the second anchor clamp 215 can also limit the movement of the steel strand 203, so that the steel strand 203 can only be pulled out and cannot be retracted, when the steel strand 203 is tensioned, the jack 212 is started, the jack 212 pulls the steel strand 203 outward, and when the specified tension is reached, the jack 212 automatically stops, so that accurate tensioning work can be carried out, the tensioning effect is good, after tensioning is completed, the jack 212 is removed and the excess steel strand 203 is cut off, finally the concrete pouring work can be carried out through the reserved slot 206, the pouring is very convenient, the construction difficulty is reduced, and the construction efficiency is improved.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A novel prestressed anchoring structure for a bridge, comprising a bridge (1), characterized in that: One end of the bridge (1) is provided with an anchoring structure (2); The anchoring structure (2) comprises a cavity (201), a bellows (202), a steel strand (203), a spiral rib (204), an anchor plate (205), a reserved groove (206), a first anchor plate (207), a first through hole (208), a first anchor clip (209), a limit plate (210), a connecting groove (211), a jack (212), a second anchor plate (213), a second through hole (214) and a second anchor clip (215); a cavity (201) is provided inside the bridge (1); a bellows (202) is fixedly installed inside the cavity (201); a steel strand (203) is provided inside the bellows (202); the interior of the bridge (1) is provided with a plurality of anchor plates (210), a plurality of anchor plates (211), a plurality of anchor plates (213), a plurality of anchor plates (214), and a plurality of anchor plates (215); A spiral rib (204) is provided on the portion of the bellows (202), one end of the bellows (202) is fixedly connected to an anchor plate (205), a reserved groove (206) is provided on one side surface of the anchor plate (205), one side surface of the anchor plate (205) is connected to a first anchor plate (207), a first through hole (208) is provided on one side surface of the first anchor plate (207), a first anchor clip (209) is provided on one end of the first anchor plate (207), one side surface of the first anchor plate (207) is connected to a limiting plate (210), a connecting groove (211) is provided on one side surface of the limiting plate (210), and one end of the steel strand (203) is connected to a jack (212).

2. The novel prestressed anchoring structure for bridges according to claim 1, characterized in that: A second anchor plate (213) is connected to one side surface of the jack (212), a second through hole (214) is provided on one side surface of the second anchor plate (213), and a second anchor clip (215) is provided at one end of the second anchor plate (213).

3. The novel prestressed anchoring structure for bridges according to claim 1 is characterized in that: The cavities (201) are opened at equal intervals on the bottom of the bridge (1), and the anchor plates (205) are fixedly connected to the bridge (1) via bolts.

4. The novel prestressed anchoring structure for bridges according to claim 1, characterized in that: Seven groups of the first through holes (208) are evenly spaced on a side surface of the first anchor plate (207), and seven groups of the first anchor clips (209) are provided, and the first anchor clips (209) are tapered as a whole.

5. The novel prestressed anchoring structure for bridges according to claim 1 is characterized in that: Seven groups of the connecting grooves (211) are provided at equal intervals on a surface of one side of the limiting plate (210), and the size of the connecting grooves (211) matches the size of the first through hole (208).

6. The novel prestressed anchoring structure for bridges according to claim 1 is characterized in that: The steel strand (203) is formed by twisting seven strands of thin steel wire, and the material of the first anchor plate (207) is a steel alloy.

7. The novel prestressed anchoring structure for bridges according to claim 2, characterized in that: Seven groups of the second through holes (214) are provided at equal intervals on a surface of one side of the second anchor plate (213), and the material of the second anchor plate (213) is a steel alloy.

8. The novel prestressed anchoring structure for bridges according to claim 2, characterized in that: Seven groups of the second anchor clips (215) are provided, and the second anchor clips (215) are tapered as a whole.

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