Prefabricated, assembled and formed small box girder structure

Abstract

The utility model discloses a prefabricated assembled small box girder structure which comprises a prefabricated open girder body and a prefabricated top plate, a connecting piece is arranged on the top face of a web of the prefabricated open girder body, a fixing hole is correspondingly formed in the bottom face of the prefabricated top plate, a guiding piece is arranged in the prefabricated open girder body, and a positioning piece is correspondingly arranged on the bottom face of the prefabricated top plate. When the prefabricated open beam body and the prefabricated top plate are hoisted and spliced, the guiding piece and the positioning piece are matched to pre-position the prefabricated open beam body and the prefabricated top plate, so that the relative position of the prefabricated open beam body and the prefabricated top plate can be limited, and the connecting piece and the corresponding fixing hole can keep the relative position in the lowering process of the prefabricated top plate; and the situation that the connecting piece cannot enter the corresponding fixing hole position and is extruded and damaged is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge structures, in particular to a prefabricated assembled small box beam structure. Background Art

[0002] In recent years, my country has actively explored and enriched green bridge construction methods that are fast, low in road interference, and quiet. It has vigorously advocated prefabricated construction of bridges and actively explored the application of new materials in prefabricated bridges. A large number of representative prefabricated bridges have been built, and the industrialized production and assembly construction of bridges have become a major trend.

[0003] At present, a Chinese patent with the announcement number CN208517805U discloses a prefabricated assembled small box beam structure, including a prefabricated open trough beam, and the top of the prefabricated open trough beam is covered with a plurality of prefabricated top plates along the length direction. A connecting piece is embedded on the top surface of the web of the prefabricated open trough beam, and a corresponding fixing hole is set on the bottom surface of the prefabricated top plate. When splicing, the prefabricated open trough beam must be hoisted to the installation position first, and then the prefabricated top plate must be hoisted to the top of the prefabricated open trough beam, and the end of the connecting rod is inserted into the fixing hole, and the prefabricated open trough beam and the prefabricated top plate are fixedly connected through the connecting piece.

[0004] However, in the actual process of hoisting, since the connection parts and the corresponding fixing holes have a unique correspondence, this places high demands on the accuracy of the lowering position of the prefabricated top plate. When the position of the prefabricated top plate is slightly deviated, the connection parts may not be able to enter the corresponding fixing holes and may be squeezed and damaged. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a prefabricated assembled small box beam structure.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A prefabricated assembled small box beam structure comprises a prefabricated open beam body and a prefabricated top plate, wherein a connecting piece is arranged on the top surface of the web of the prefabricated open beam body, and fixing holes are arranged correspondingly on the bottom surface of the prefabricated top plate, a guiding piece is arranged in the prefabricated open beam body, and a positioning piece is arranged correspondingly on the bottom surface of the prefabricated top plate, and when the prefabricated open beam body and the prefabricated top plate are assembled, the cooperation between the guiding piece and the positioning piece can limit the relative position of the assembly of the prefabricated open beam body and the prefabricated top plate.

[0008] The guide member comprises a guide plate, a guide groove is formed on the top surface of the guide plate, and the positioning member comprises a guide block, and the guide block and the guide groove are adapted to each other.

[0009] The guide blocks extend along the length direction of the prefabricated top plate, and a plurality of guide plates are arranged at intervals.

[0010] The side wall of the guide groove is arranged obliquely, and the opening of the guide groove gradually expands in diameter from bottom to top.

[0011] Chamfers are arranged on both sides of the end of the guide block.

[0012] A positioning hole is provided on the side wall of the guide groove, and a pre-tightening block is elastically provided on the side wall of the guide block. When the pre-tightening block is opposite to the positioning hole, the pre-tightening block is elastically inserted into the positioning hole.

[0013] A mounting hole is arranged on the side wall of the guide block, a spring is arranged in the mounting hole, and the preload block is connected to the end of the spring.

[0014] A liquid storage bag is arranged in the installation hole, a thorn tube is arranged at the inner end of the guide block, and the thorn tube is communicated with the outer end surface of the guide block.

[0015] The beneficial effect of the utility model is that when the prefabricated open beam body and the prefabricated top plate are hoisted and spliced, the guide member and the positioning member cooperate to pre-position the prefabricated open beam body and the prefabricated top plate, so that the relative position of the prefabricated open beam body and the prefabricated top plate can be limited, so that during the lowering process of the prefabricated top plate, the connecting member and the corresponding fixing hole can maintain a relative position, and it is not easy for the connecting member to be unable to enter the corresponding fixing hole position and cause the connecting member to be squeezed and damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment;

[0017] Figure 2 for Figure 1 Enlarged view of part A.

[0018] Figure numerals: 1. Prefabricated open beam; 2. Prefabricated top plate; 3. Connector; 4. Fixing hole; 5. Guide member; 6. Positioning member; 7. Guide plate; 8. Guide groove; 9. Guide block; 10. Positioning hole; 11. Pre-tightening block; 12. Mounting hole; 13. Spring; 14. Liquid storage bag; 15. Barbed tube. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0020] like Figure 1, Figure 2 As shown, a prefabricated assembled small box beam structure includes a prefabricated open beam body 1 and a prefabricated top plate 2. The prefabricated open beam body 1 includes a bottom plate and webs formed on both sides of the bottom plate, and a connecting piece 3 is provided on the top surface of the web; and a fixing hole 4 is correspondingly provided on the bottom surface of the prefabricated top plate 2. During assembly, the prefabricated open beam body 1 needs to be hoisted to the installation position first, and then the prefabricated top plate 2 needs to be hoisted to the top of the prefabricated open beam body 1, and the end of the connecting rod is inserted into the fixing hole 4, and the prefabricated open beam body 1 and the prefabricated top plate 2 are fixedly connected through the connecting piece 3.

[0021] However, in the actual process of hoisting, since the connection piece 3 and the corresponding fixing hole 4 have a unique corresponding relationship, a high requirement is placed on the accuracy of the lowering position of the prefabricated top plate 2. When the position of the prefabricated top plate 2 is slightly deviated, the connection piece 3 may not be able to enter the corresponding fixing hole 4 and may be squeezed and damaged.

[0022] In view of the above problems, the prefabricated open beam 1 disclosed herein is provided with a guide member 5, and a positioning member 6 is correspondingly provided on the bottom surface of the prefabricated top plate 2. For example, the guide member 5 may include a guide plate 7, and a guide groove 8 is provided on the top surface of the guide plate 7; the positioning member 6 may include a guide block 9, and the guide block 9 and the guide groove 8 have mutually adapted sizes.

[0023] Therefore, during the lowering process of the prefabricated top plate 2, the guide block 9 will first be inserted into the guide groove 8 to pre-position the prefabricated open beam body 1 and the prefabricated top plate 2, thereby limiting the relative position of the prefabricated open beam body 1 and the prefabricated top plate 2, so that the connecting member 3 and the corresponding fixing hole 4 can maintain a relative position, and it is not easy for the connecting member 3 to be unable to enter the corresponding fixing hole 4 and cause the connecting member 3 to be squeezed and damaged.

[0024] In some embodiments, the guide block 9 extends along the length direction of the prefabricated top plate 2, and a plurality of guide plates 7 are arranged at intervals in the prefabricated open beam body 1. The plurality of guide plates 7 provide a stronger supporting function for the guide block 9, so that the small box beam after splicing and forming has a higher structural stability. As another solution, the guide block 9 can also be arranged in multiple intervals, in which case the plurality of guide blocks 9 and the plurality of guide plates 7 have a one-to-one corresponding positional relationship. In this solution, the two sides of the guide groove 8 are closed structures, and the guide blocks 9 are inserted into the guide groove 8 one by one, thereby having a better pre-positioning effect on the prefabricated open beam body 1 and the prefabricated top plate 2.

[0025] For example, the side wall of the guide groove 8 is inclined, and the opening of the guide groove 8 gradually expands from bottom to top. That is, from the front of the guide plate 7, the guide groove 8 presents a trumpet shape with a small bottom and a large top. In this way, during the lowering process of the prefabricated top plate 2, the larger opening at the top is easier to receive and guide the insertion of the guide block 9, making the assembly of the prefabricated open beam body 1 and the prefabricated top plate 2 more convenient. Preferably, chamfers are provided on both sides of the end of the guide block 9.

[0026] In some embodiments, a positioning hole 10 is further provided on the side wall of the guide groove 8, and a pre-tightening block 11 is elastically provided on the side wall of the guide block 9. For example, a mounting hole 12 is provided on the side wall of the guide block 9, a spring 13 is provided in the mounting hole 12, and the pre-tightening block 11 is connected to the end of the spring 13. When the spring 13 is in a natural state, the end of the pre-tightening block 11 slightly protrudes from the mounting hole 12; as the prefabricated top plate 2 is gradually lowered, the pre-tightening block 11 will be squeezed into the mounting hole 12 by the side wall of the guide groove 8; and when the pre-tightening block 11 is opposite to the positioning hole 10, the spring 13 returns to its natural state and pushes the pre-tightening block 11 into the positioning hole 10, and the pre-assembly of the prefabricated open beam 1 and the prefabricated top plate 2 can be achieved by the clamping of the pre-tightening block 11 and the positioning hole 10.

[0027] For example, a liquid storage capsule 14 is also provided in the mounting hole 12, and a thorn tube 15 is correspondingly provided at the inner end of the guide block 9, and the thorn tube 15 is connected to the outer end surface of the guide block 9. Therefore, when the preload block 11 is retracted into the mounting hole 12 under the pressure of the side wall of the guide groove 8, the thorn tube 15 can pierce and extend into the liquid storage capsule 14, and a colloid, such as epoxy resin glue or silicone rubber glue, can be provided in the liquid storage capsule 14. Then, the colloid in the liquid storage capsule 14 will be applied to the side wall of the guide groove 8 through the thorn tube 15, and the guide block 9 and the guide groove 8 can be bonded by the colloid, thereby further improving the strength, stability and reliability of the assembled small box beam structure.

[0028] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A prefabricated assembled small box beam structure, comprising a prefabricated open beam body (1) and a prefabricated top plate (2), wherein a connecting piece (3) is arranged on the top surface of the web of the prefabricated open beam body (1), and a fixing hole (4) is correspondingly arranged on the bottom surface of the prefabricated top plate (2), wherein: A guide member (5) is provided inside the prefabricated open beam body (1), and a positioning member (6) is correspondingly provided on the bottom surface of the prefabricated top plate (2); when the prefabricated open beam body (1) and the prefabricated top plate (2) are assembled, the guide member (5) cooperates with the positioning member (6) to limit the relative positions of the prefabricated open beam body (1) and the prefabricated top plate (2).

2. The prefabricated assembled small box beam structure according to claim 1 is characterized in that: The guide member (5) comprises a guide plate (7), a guide groove (8) is provided on the top surface of the guide plate (7), and the positioning member (6) comprises a guide block (9), and the guide block (9) and the guide groove (8) are mutually adapted.

3. The prefabricated assembled small box beam structure according to claim 2 is characterized in that: The guide block (9) extends along the length direction of the prefabricated top plate (2), and a plurality of guide plates (7) are arranged at intervals.

4. The prefabricated assembled small box beam structure according to claim 2 is characterized in that: The side wall of the guide groove (8) is arranged obliquely, and the opening of the guide groove (8) gradually expands in diameter from bottom to top.

5. The prefabricated assembled small box beam structure according to claim 2 is characterized in that: Chamfers are arranged on both sides of the end of the guide block (9).

6. The prefabricated assembled small box beam structure according to claim 2 is characterized in that: A positioning hole (10) is provided on the side wall of the guide groove (8), and a pre-tightening block (11) is elastically provided on the side wall of the guide block (9); when the pre-tightening block (11) is opposite to the positioning hole (10), the pre-tightening block (11) is elastically inserted into the positioning hole (10).

7. The prefabricated assembled small box beam structure according to claim 6 is characterized in that: A mounting hole (12) is provided on the side wall of the guide block (9), a spring (13) is provided in the mounting hole (12), and the preload block (11) is connected to the end of the spring (13).

8. The prefabricated assembled small box beam structure according to claim 7 is characterized in that: A liquid storage bag (14) is arranged in the mounting hole (12), a thorn tube (15) is arranged at the inner end of the guide block (9), and the thorn tube (15) is connected to the outer end surface of the guide block (9).

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