Lightweight fabricated concrete cover beam

Abstract

The utility model discloses a light assembly type concrete cover beam which comprises a prefabricated prestressed cover beam and a pier, the prefabricated prestressed cover beam comprises a cover beam top plate and a pier inserting part, the cover beam top plate is arranged at the top of the pier inserting part, and the pier is inserted into the pier inserting part; webs are arranged on the two sides of the capping beam top plate, and a hollow structure is formed between the two webs. The lower structure of the capping beam top plate is optimized into a hollow structure by arranging the two webs on the two sides of the capping beam top plate, and compared with a traditional capping beam structure, the self weight of the capping beam can be effectively reduced, so that the construction difficulty of the capping beam is reduced, and meanwhile the prefabricated capping beam is convenient to transport.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge structures, in particular to a lightweight assembled concrete cap beam. Background Art

[0002] The upper structure of the large-scale and wide-area simply supported beam bridge in highway bridges has basically been assembled, while the assembly of the lower part is still in its infancy. As an important component of the lower structure of the bridge, the cap beam is indispensable for the widely used prefabricated small box beam and T-beam bridge as the main support and force transmission component of the upper structure. With the development of social economy, traffic demand has increased rapidly, and the highway grade and number of lanes have increased accordingly. The number of six-lane and eight-lane highways has gradually increased, resulting in the gradual increase in the length and weight of the cap beam. At present, the assembled cap beam mostly adopts solid reinforced concrete rectangular cap beam or solid prestressed concrete cap beam, which has a large hoisting weight and is not convenient for transportation and installation. The carrying capacity of small-span highway beam bridges in the transportation route also limits the transportation weight of prefabricated components. These problems are particularly prominent for mountain bridges. Therefore, it is of great significance to propose a lightweight and easy-to-construct assembled cap beam to improve the application of assembled bridges. Utility Model Content

[0003] The utility model aims to provide a lightweight assembled concrete cap beam, which can reduce the deadweight of the cap beam while ensuring the structural performance of the cap beam by optimizing the cap beam structure, thereby facilitating the transportation and hoisting of the prefabricated cap beam.

[0004] The utility model is realized by the following technical solutions:

[0005] A lightweight assembled concrete cap beam includes a prefabricated prestressed cap beam and a bridge pier, wherein the prefabricated prestressed cap beam includes a cap beam top plate and a bridge pier plug-in portion, wherein the cap beam top plate is arranged on the top of the bridge pier plug-in portion, and the bridge pier is plugged into the bridge pier plug-in portion; webs are arranged on both sides of the cap beam top plate, and a hollow structure is formed between the two webs. In order to solve the above technical scheme and achieve the corresponding technical effect, the utility model optimizes the structure below the cap beam top plate into a hollow structure by arranging two webs on both sides of the cap beam top plate. Compared with the traditional cap beam structure, it can effectively reduce the deadweight of the cap beam, thereby reducing the construction difficulty of the cap beam, and facilitating the transportation of the prefabricated cap beam.

[0006] Further technical solutions:

[0007] A stiffening web is arranged in the hollow structure, the top surface of the stiffening web is connected to the bottom surface of the cap beam top plate, and the two ends of the stiffening web are respectively connected to the webs arranged on both sides of the cap beam top plate.

[0008] Furthermore: the number of the bridge pier plug-in parts is two, and the two bridge pier plug-in parts are symmetrically arranged about the center line of the cap beam top plate.

[0009] Further: a plug-in hole is provided on the pier plug-in portion, and the plug-in hole is a pier plug-in hole or a pier steel bar plug-in hole.

[0010] Further: when the plug-in hole is a bridge pier plug-in hole, the top of the bridge pier is inserted into the plug-in hole, and a mortar cushion layer is arranged between the top surface of the bridge pier and the bottom of the plug-in hole.

[0011] Further: when the plug-in hole is a pier plug-in hole, the pier plug-in hole is in a cone shape with a small top and a large bottom. After the pier is inserted into the pier plug-in hole, concrete slurry is poured into the plug-in gap. Further: when the plug-in hole is a pier steel bar plug-in hole, the pier plug-in part is provided with a plurality of pier steel bar plug-in holes.

[0012] Furthermore: the opening positions of the plurality of the pier reinforcement insertion holes are matched with the setting positions of the pier main reinforcements.

[0013] Furthermore: the main reinforcement of the pier is inserted into the reinforcement socket hole of the pier and connected with the main reinforcement of the cap beam arranged in the socket part of the pier.

[0014] Furthermore: the cap beam top plate, the pier plug-in portion and the web are an integrally formed structure.

[0015] Furthermore: prestressed tendons are preset in the web.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] 1. The utility model discloses a lightweight assembled concrete cap beam. The utility model optimizes the structure below the cap beam top plate into a hollow structure by arranging two webs on both sides of the cap beam top plate. Compared with the traditional cap beam structure, the utility model can effectively reduce the self-weight of the cap beam, thereby reducing the construction difficulty of the cap beam and facilitating the transportation of the prefabricated cap beam.

[0018] 2. The utility model discloses a lightweight assembled concrete cap beam, which provides two assembly forms: one in which the main reinforcement of the pier is inserted into the pier reinforcement insertion hole of the pier insertion part, and the other in which the pier is inserted into the pier insertion hole of the pier insertion part. The first structure can effectively reduce the self-weight of the cap beam by more than 30%, and the second structure can effectively reduce the self-weight of the cap beam by more than 40%.

[0019] 3. The utility model provides a lightweight assembled concrete cap beam. When the plug-in hole is a bridge pier plug-in hole, the bridge pier plug-in hole is in a cone shape with a small top and a large bottom. After the bridge pier is inserted into the bridge pier plug-in hole, concrete slurry is poured into the plug-in gap. The impact force of the bridge pier on the cap beam top plate can be effectively converted into radial force and tangential force, thereby effectively reducing the impact of the bridge pier on the cap beam top plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the prefabricated prestressed cap beam structure in Example 2;

[0023] Figure 3 This is a schematic diagram of the plug hole structure in Example 2;

[0024] Figure 4 This is a schematic diagram of the prefabricated prestressed cap beam structure in Example 3.

[0025] Marks and corresponding parts names in the attached drawings:

[0026] 1-prefabricated prestressed cap beam, 2-bridge pier, 3-stiffened web, 4-mortar cushion, 11-cap beam top plate, 12-bridge pier plug-in part, 13-web, 14-plug-in hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0028] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0029] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 1 As shown, the utility model is a lightweight assembled concrete cap beam, including a prefabricated prestressed cap beam 1 and a bridge pier 2. The prefabricated prestressed cap beam 1 includes a cap beam top plate 11 and a bridge pier plug-in portion 12. The cap beam top plate 11 is arranged on the top of the bridge pier plug-in portion 12, and the bridge pier 2 is plugged into the bridge pier plug-in portion 12. Webs are arranged on both sides of the cap beam top plate, and a hollow structure is formed between the two webs. In this embodiment, two webs 13 are arranged on both sides of the cap beam top plate 11 to optimize the structure below the cap beam top plate 11 into a hollow structure. Compared with the traditional cap beam structure, it can effectively reduce the self-weight of the cap beam, thereby reducing the construction difficulty of the cap beam, and at the same time facilitate the transportation of the prefabricated cap beam.

[0033] A stiffening web 3 is provided in the hollow structure. In this embodiment, by providing the stiffening web 3 in the hollow structure and effectively utilizing the stiffening web 3 to enhance the strength and stability of the connection structure between the cap beam top plate 11 and the web 13, it is possible to effectively reduce the deadweight of the cap beam and ensure that the structural performance of the cap beam meets the construction requirements. Specifically, the top surface of the stiffening web 3 is connected to the bottom surface of the cap beam top plate 11, and the two ends of the stiffening web 3 are respectively connected to the webs 13 provided on both sides of the cap beam top plate 11.

[0034] The number of the pier plug-in parts 12 is two, and the two pier plug-in parts 12 are symmetrically arranged about the center line of the cap beam top plate 11. In this embodiment, two mutually symmetrical pier plug-in parts 12 are preferably arranged, and this structural form can not only ensure the stability of the assembly structure of the prefabricated prestressed cap beam 1 and the pier 2, but also effectively meet the supporting capacity of the pier 2 for the prefabricated prestressed cap beam 1.

[0035] The pier plug-in portion 12 is provided with a plug-in hole 14, which is a pier plug-in hole or a pier steel bar plug-in hole. In this embodiment, the assembly of the prefabricated prestressed cap beam 1 and the pier 2 is achieved by providing the plug-in hole 14 in the pier plug-in portion 12. Specifically, there are two assembly forms: the pier main reinforcement is inserted into the pier steel bar plug-in hole of the pier plug-in portion 12, and the pier 2 is inserted into the pier plug-in portion 12. According to different assembly methods, the pier steel bar plug-in hole or the pier plug-in hole is selectively provided in the pier plug-in portion 12.

[0036] In this embodiment, in order to further improve the strength and stability of the prefabricated prestressed cap beam 1 structure, the cap beam top plate 11, the pier plug-in portion 12 and the web 13 are designed as an integrally formed structure; at the same time, in order to improve the structural strength of the web 13 and the supporting capacity of the web 13 to the cap beam top plate 11, prestressed tendons are also preset in the web 13.

[0037] Example 2

[0038] This embodiment provides a specific structure of the plug-in hole 14 when the pier 2 is inserted into the pier plug-in hole of the pier plug-in portion 12 on the basis of the embodiment 1.

[0039] like Figure 2 , Figure 3 As shown, when the plug-in hole 14 is a pier plug-in hole, the top of the pier 2 is inserted into the plug-in hole 14, and a mortar cushion layer 4 is provided between the top surface of the pier 2 and the bottom of the plug-in hole 14. In this embodiment, the assembly of the prefabricated prestressed cap beam 1 and the pier 2 is achieved by inserting the top of the pier 2 into the plug-in hole 14. At the same time, the provision of the mortar cushion layer 4 can effectively reduce the impact of the pier 2 on the prefabricated prestressed cap beam 1 during the assembly process, thereby reducing the probability of damage to the cap beam top plate 11 and other structures of the prefabricated prestressed cap beam 1 during the assembly process. Further, in order to reduce the impact during the assembly process, concrete slurry is poured along the hole wall of the pier plug-in hole to complete the assembly connection work. Specifically, the pier plug-in hole is in a cone shape with a small top and a large bottom, which can effectively convert the impact force of the pier on the cap beam top plate into radial force and tangential force, thereby effectively reducing the impact of the pier on the cap beam top plate.

[0040] Example 3

[0041] This embodiment provides, on the basis of the first embodiment, a specific structure of the insertion hole 14 when the main reinforcement of the pier is inserted into the reinforcement insertion hole of the pier insertion part 12 .

[0042] like Figure 4 As shown, when the insertion hole 14 is a pier steel bar insertion hole, the pier insertion part 12 is provided with a plurality of pier steel bar insertion holes; the opening positions of the plurality of pier steel bar insertion holes are adapted to the setting positions of the pier main bars. In this embodiment, the assembly of the prefabricated prestressed cap beam 1 and the pier 2 is realized by inserting the pier main bars into the insertion holes 14; at the same time, in order to smoothly realize the assembly, the position of the pier main bars needs to be measured before the assembly, and corresponding pier steel bar insertion holes are opened on the pier insertion part 12. The main bars of the pier are inserted into the pier steel bar insertion holes and connected with the cap beam main bars set in the pier insertion part.

[0043] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A lightweight assembled concrete cap beam, characterized in that: The invention comprises a prefabricated prestressed cap beam (1) and a bridge pier (2), wherein the prefabricated prestressed cap beam (1) comprises a cap beam top plate (11) and a bridge pier plug-in portion (12), the cap beam top plate (11) is arranged on the top of the bridge pier plug-in portion (12), and the bridge pier (2) is plugged into the bridge pier plug-in portion (12); Webs (13) are provided on both sides of the cap beam top plate (11), and a hollow structure is formed between the two webs (13); A stiffening web (3) is arranged in the hollow structure, the top surface of the stiffening web (3) is connected to the bottom surface of the cap beam top plate (11), and the two ends of the stiffening web (3) are respectively connected to webs (13) arranged on both sides of the cap beam top plate (11).

2. A lightweight assembled concrete cap beam according to claim 1, characterized in that: The number of the bridge pier plug-in parts (12) is two, and the two bridge pier plug-in parts (12) are symmetrically arranged about the center line of the cap beam top plate (11).

3. The lightweight assembled concrete cap beam according to claim 1, characterized in that: The pier inserting portion (12) is provided with an inserting hole (14), and the inserting hole (14) is a pier inserting hole or a pier steel bar inserting hole.

4. A lightweight assembled concrete cap beam according to claim 3, characterized in that: When the plug-in hole (14) is a bridge pier plug-in hole, the top of the bridge pier (2) is inserted into the plug-in hole (14), and a mortar cushion layer (4) is provided between the top surface of the bridge pier (2) and the bottom of the plug-in hole (14).

5. A lightweight assembled concrete cap beam according to claim 4, characterized in that: When the plug-in hole (14) is a bridge pier plug-in hole, the bridge pier plug-in hole is in a cone shape with a small top and a large bottom. After the bridge pier (2) is inserted into the bridge pier plug-in hole, concrete slurry is poured into the plug-in gap.

6. The lightweight assembled concrete cap beam according to claim 3, characterized in that: When the insertion hole (14) is a bridge pier steel bar insertion hole, the bridge pier insertion portion (12) is provided with a plurality of bridge pier steel bar insertion holes; The opening positions of the plurality of bridge pier reinforcement insertion holes are matched with the setting positions of the main reinforcements of the bridge pier (2).

7. A lightweight assembled concrete cap beam according to claim 6, characterized in that: The main reinforcement of the pier (2) is inserted into the pier reinforcement insertion hole and connected to the main reinforcement of the cap beam arranged in the pier insertion part (12).

8. The lightweight assembled concrete cap beam according to claim 6, characterized in that: The cap beam top plate (11), the pier plug-in portion (12) and the web plate (13) are an integrally formed structure; Prestressed tendons are also preset in the web (13).

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