Fabricated concrete two-way six-lane bent cap stand column structure
Through the connection between prefabricated hollow cover beams and columns of the π-type structure, the problems of difficulty and high cost of construction of UHPC hollow cover beams are solved, and low-cost and efficient bridge construction is achieved, which is suitable for urban viaduct hoisting.
Patent Information
- Application Number
- CN202421513796.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the prior art, the hollow cover beams designed with UHPC ultra-high performance concrete box type and Π-shaped section have problems such as high construction difficulty and high material requirements, resulting in excessive cost.
Prefabricated hollow cover beams and hollow columns with π-type structure are prefabricated and lifted on site by factory prefabricated and on-site lifting. C80 concrete rectangular thin-wall hollow columns are connected to the cover beam webs and cross-dividing plates through grouting sleeves or grouting corrugated pipes to achieve overall lifting and avoid on-site secondary pouring.
It reduces construction difficulty and cost, shortens construction period, ensures construction quality, and is suitable for the lifting capacity of viaducts in most cities, with a wide range of applications.
Smart Images
Figure CN223189564U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bridge engineering, in particular to an assembled concrete bidirectional six-lane cap beam and column structure. Background Art
[0002] The prefabricated construction of bridge structures, especially the substructure, can greatly reduce on-site construction work, which is of great significance to improving the construction quality of bridge structures, shortening construction period, and protecting the environment during construction.
[0003] At present, the research on the assembly of the lower bridge structure has been carried out on a large scale in China. For the urban elevated two-way six-lane cap beam, the C50 prestressed concrete cap beam structure is currently mainly used. Due to its heavy weight (total weight exceeds 300 tons), most of the cap beams and columns are currently cast-in-situ. In Shanghai, Zhejiang, Jiangsu and other places, the two-way four-lane cap beams and columns can already be fully prefabricated in the factory and installed on site. Due to its heavy weight, the C50 concrete two-way six-lane cap beam needs to be prefabricated in layers and sections, and some are cast-in-situ on site to reduce the weight of the hoisting.
[0004] At present, there are attempts to use UHPC ultra-high performance concrete box-shaped and Π-shaped cross-sections to design hollow cap beams in order to reduce the lifting weight. However, due to the difficulty of construction (steam curing is required) and high material requirements of UHPC, the cost is too high and it is not easy to popularize. Therefore, the concrete cap beam with relatively low construction difficulty and economic cost proposed in the present invention has certain practical significance and application value. Utility Model Content
[0005] The purpose of this utility model is to provide an assembled concrete two-way six-lane cap beam column structure in order to overcome the defects of the above-mentioned prior art that the hollow cap beam designed with UHPC ultra-high performance concrete box and Π-shaped section is difficult to construct and has high material requirements, resulting in excessively high construction costs.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] An assembled concrete two-way six-lane cap beam and column structure is arranged on a preset pedestal, including a prefabricated hollow cap beam and hollow columns. The side cross-section of the hollow cap beam is a π-shaped structure, and the hollow columns are fixed on the pedestal; the hollow cap beam is fixed on the hollow columns.
[0008] Preferably, the hollow cap beam includes a cap beam top plate and multiple cap beam webs. The cap beam top plate is horizontally arranged, and the cap beam webs are vertically fixed to the lower end of the cap beam top plate. The cap beam webs are parallel to each other, and the cap beam webs are an inverted trapezoidal structure. A groove is provided on the outer side of the webs.
[0009] Preferably, the hollow cap beam also includes a cap beam partition, and the number of the cap beam partitions is multiple. The cap beam partitions are respectively vertically connected to the cap beam top plate and the cap beam web. The cap beam partitions are located between two adjacent cap beam webs. The cap beam partitions and the cap beam webs form a connection structure that matches the cross-section of the hollow column.
[0010] Preferably, the pore diameter of the cross section of the connecting structure is smaller than the pore diameter of the cross section of the hollow column.
[0011] Preferably, end cross beams are provided at both ends of the cap beam top plate, the end cross beams are located below the cap beam top plate, and both ends of the cap beam web are respectively connected to the end cross beams.
[0012] Preferably, anti-seismic blocks are provided at both ends of the cap beam top plate, and the anti-seismic blocks are located on the side of the cap beam top plate close to the end cross beam.
[0013] Preferably, a supporting pad is provided at the upper end of the cap beam top plate, and the number of the supporting pads is multiple and the supporting pads are distributed at equal intervals.
[0014] Preferably, a grouting sleeve is provided between the hollow column and the pedestal, and the hollow column is connected to the pedestal via the grouting sleeve.
[0015] Preferably, the hollow cap beam is connected to the hollow column through a steel grouting sleeve or a grouting bellows.
[0016] Preferably, the hollow cap beam is an integrally formed structure.
[0017] Compared with the prior art, the utility model has the following advantages:
[0018] (1) This scheme prefabricates the hollow cap beam and hollow columns in the factory. After the early bridge pile foundation or pedestal is completed, the prefabricated hollow columns are installed on the pedestal, and then the hollow cap plate is fixed to the upper end of the hollow column. After the installation is completed, the superstructure is installed.
[0019] By prefabricating the hollow cap beam in one piece and hoisting it on-site, secondary pouring on-site is avoided, the construction period is shortened, and the construction quality is better guaranteed. Furthermore, the prefabricated hollow cap beam is hoisted in one piece, eliminating the need for temporary piers that would hinder ground traffic. The hollow cap beam adopts an open π-shaped hollow cross-section, which is easy to demould, facilitates processing and manufacturing, and reduces the cost of manufacturing and use of the structure. Its overall light weight meets the hoisting capacity of most urban elevated construction projects, and it has a wide range of applications, strong adaptability, and broad prospects for use.
[0020] (2) In this scheme, C80 concrete rectangular thin-walled hollow columns are used to connect with hollow cap beams. The four sides of the hollow columns are connected to the web and transverse diaphragm of the cap beam through thick steel bars in the form of grouting sleeves or grouting bellows. The force transmission between the hollow columns and the hollow cap plate is direct, the connection structure is convenient, and there is a lot of mature application experience, which has a relatively broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A front view of the cap beam column structure provided by an embodiment of the utility model;
[0022] Figure 2 A top view of the cap beam and column structure provided in an embodiment of the present utility model;
[0023] Figure 3 for Figure 1 Cross-section of the middle AA;
[0024] Figure 4 for Figure 1 Cross-section of the middle BB;
[0025] Figure 5 for Figure 1 Cross-section of the middle CC;
[0026] Figure 6 for Figure 1 Cross-section of the middle EE;
[0027] Figure 7 for Figure 1 Cross-section of middle GG;
[0028] In the figure: 1. cap beam, 11. cap beam top plate, 12. cap beam web, 13. support pad, 14. seismic stop block, 15. end cross beam, 16. cap beam partition, 2. column, 21. column wall plate, 3. pedestal. DETAILED DESCRIPTION
[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. 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 orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.
[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0034] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0035] Example 1
[0036] like Figure 1 As shown, this embodiment provides an assembled concrete two-way six-lane cap beam and column structure, which is arranged on a preset pedestal 3, including a prefabricated hollow cap beam 1 and a hollow column 2. The side cross-section of the hollow cap beam 1 is a π-shaped structure, and the hollow column 2 is fixed on the pedestal 3; the hollow cap beam 1 is fixed on the hollow column 2.
[0037] The hollow cap beam and hollow column are prefabricated in the factory. After the early bridge pile foundation or pedestal is completed, the prefabricated hollow column is installed on the pedestal, and then the hollow cover plate is fixed to the upper end of the hollow column. After the installation is completed, the superstructure is installed.
[0038] By prefabricating the hollow cap beam in one piece and hoisting it on-site, secondary pouring on-site is avoided, the construction period is shortened, and the construction quality is better guaranteed. Furthermore, the prefabricated hollow cap beam is hoisted in one piece, eliminating the need for temporary piers that would hinder ground traffic. The hollow cap beam adopts an open Π-shaped hollow cross-section, which is easy to demould, facilitates processing and manufacturing, and reduces the cost of manufacturing and use of the structure. Its overall light weight meets the hoisting capacity of most urban elevated construction projects, and it has a wide range of applications, strong adaptability, and broad prospects for use.
[0039] Specifically, if Figure 1 and Figure 6 As shown, the hollow cap beam 1 includes a cap beam top plate 11 and multiple cap beam webs 12. The cap beam top plate 11 is horizontally arranged, and the cap beam webs 12 are vertically fixed to the lower end of the cap beam top plate 11. The cap beam webs 12 are parallel to each other, and the cap beam webs 12 are an inverted trapezoidal structure, and grooves are provided on the outer side of the webs 12.
[0040] like Figure 1 and Figure 2 As shown, the hollow cap beam 1 further includes a cap beam partition 16, and the number of the cap beam partition 16 is multiple. The cap beam partition 16 is respectively connected vertically to the cap beam top plate 11 and the cap beam web 12. The cap beam partition 16 is located between two adjacent cap beam webs 12. The cap beam partition 16 and the cap beam web 12 enclose a connection structure that matches the cross section of the hollow column 2. In this embodiment, as Figure 5 As shown, the aperture of the cross section of the connecting structure is smaller than the aperture of the cross section of the hollow column 2. The hollow cap beam 1 is connected to the hollow column 2 through a steel grouting sleeve or a grouting bellows. The hollow cap beam 1 is an integrally formed structure.
[0041] C80 concrete rectangular thin-walled hollow columns are used to connect with hollow cap beams. The four sides of the hollow columns are connected to the web and diaphragm of the cap beam through thick steel bars in the form of grouting sleeves or grouting bellows. The force transmission between the hollow columns and the hollow cap plates is direct, and the connection structure is convenient. There is a lot of mature application experience and it has a relatively broad application prospect.
[0042] Specifically, end crossbeams 15 are provided at both ends of the cap beam top plate 11, and are located below the cap beam top plate 11. The ends of the cap beam web 12 are connected to the end crossbeams 15. Seismic stoppers 14 are provided at both ends of the cap beam top plate 11, and are located on the side of the cap beam top plate 11 near the end crossbeams 15. Multiple support pads 13 are provided at the upper end of the cap beam top plate 11, and each support pad 13 is evenly spaced. Grouting sleeves are provided between the hollow columns 2 and the pedestal 3, and the hollow columns 2 are connected to the pedestal via the grouting sleeves.
[0043] In this embodiment, the hollow cap beam adopts high-grade C80 concrete and hollow cross-section structure, and the hoisting weight of the two-way six-lane prefabricated cap beam is controlled below 200 tons, which meets the hoisting capacity of most urban elevated construction. The hollow column 2 is composed of four column wall surfaces 21 connected in sequence from end to end, and the hollow column is formed in one piece.
[0044] In combination with the above preferred implementation, this embodiment also provides a more specific implementation, such as Figures 1 to 7 As shown, the construction process of the two-way six-lane cap beam column structure is as follows:
[0045] Based on the determined superstructure and auxiliary structure forms and loads of the bridge, as well as the vehicle load level of the elevated bridge, the superstructure forms include prefabricated small box girders, T-beams, box-shaped or I-shaped steel-concrete composite girders, etc., and auxiliary structures include pavement and anti-collision guardrails. Under the premise of ensuring that the regulatory requirements for the strength and stiffness of the substructure are met, the cross-sectional dimensions, prestressing force, and reinforcement configuration of the main loading components are formulated, and structural verification is carried out according to the regulations. It is also ensured that the lifting weight of the cap beam and column meets the requirements of the lifting equipment;
[0046] The cap beams and columns are prefabricated in the factory, and the selection of materials, factory prefabrication construction and acceptance must meet relevant construction specifications and design requirements;
[0047] After the initial on-site construction of the bridge pile foundation and pier cap is completed, the columns are transported to the site for on-site installation of the prefabricated columns. The prefabricated columns and pier cap are generally connected using steel grouting sleeves. After the prefabricated columns are installed, the prefabricated cap beam is transported to the site for on-site installation of the cap beam. The prefabricated cap beam and prefabricated columns can be connected using steel grouting sleeves or grouting bellows.
[0048] After the installation of the cap beam is completed, continue with the installation of the subsequent bridge superstructure. At the same time, pay attention to the design requirements, tension the cap beam prestressing in batches and stages, and finally install the auxiliary structures.
[0049] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.
Claims
1. An assembled concrete bidirectional six-lane cap beam column structure, arranged on a preset pedestal (3), characterized in that: It comprises a prefabricated hollow cap beam (1) and a hollow column (2), wherein the side cross-section of the hollow cap beam (1) is a π-shaped structure, and the hollow column (2) is fixed on a bearing platform (3); the hollow cap beam (1) is fixed on the hollow column (2); The hollow cap beam (1) comprises a cap beam top plate (11) and a plurality of cap beam webs (12), wherein the cap beam top plate (11) is arranged horizontally, and the cap beam webs (12) are vertically fixed to the lower end of the cap beam top plate (11), and the cap beam webs (12) are parallel to each other, and the cap beam webs (12) are in an inverted trapezoidal structure, and grooves are provided on the outer sides of the webs (12); The hollow cap beam (1) also includes a cap beam partition (16), and the number of the cap beam partitions (16) is multiple. The cap beam partitions (16) are respectively vertically connected to the cap beam top plate (11) and the cap beam web (12). The cap beam partition (16) is located between two adjacent cap beam webs (12). The cap beam partition (16) and the cap beam web (12) enclose a connection structure that matches the cross section of the hollow column (2).
2. The assembled concrete bidirectional six-lane cap beam and column structure according to claim 1, characterized in that: The pore diameter of the cross section of the connecting structure is smaller than the pore diameter of the cross section of the hollow column (2).
3. The assembled concrete bidirectional six-lane cap beam and column structure according to claim 1, characterized in that: End cross beams (15) are provided at both ends of the cap beam top plate (11), the end cross beams (15) are located below the cap beam top plate (11), and both ends of the cap beam web plate (12) are respectively connected to the end cross beams (15).
4. The assembled concrete bidirectional six-lane cap beam and column structure according to claim 3, characterized in that: Anti-seismic blocks (14) are provided at both ends of the cap beam top plate (11), and the anti-seismic blocks (14) are located on one side of the cap beam top plate (11) close to the end cross beam (15).
5. The assembled concrete bidirectional six-lane cap beam and column structure according to claim 1, characterized in that: A supporting pad (13) is provided at the upper end of the cap beam top plate (11), and the number of the supporting pads (13) is multiple, and the supporting pads (13) are distributed at equal intervals.
6. The assembled concrete bidirectional six-lane cap beam and column structure according to claim 1, characterized in that: A grouting sleeve is provided between the hollow column (2) and the pedestal (3), and the hollow column (2) is connected to the pedestal via the grouting sleeve.
7. The assembled concrete bidirectional six-lane cap beam and column structure according to claim 1, characterized in that: The hollow cap beam (1) is connected to the hollow column (2) via a steel bar grouting sleeve or a grouting corrugated pipe.
8. The assembled concrete bidirectional six-lane cap beam and column structure according to claim 1, characterized in that: The hollow cap beam (1) is an integrally formed structure.