Prefabricated column structure for assembled subway station

Abstract

The utility model discloses a prefabricated column structure for assembled subway station, including concrete reinforcing column, the concrete reinforcing column bottom is provided with the column foot ring steel sheet, the column foot ring steel sheet with the anchor bolt positioning frame on the bottom longitudinal beam cooperation, to fix concrete reinforcing column on bottom longitudinal beam, the concrete reinforcing column bottom middle is provided with a plurality of along the inner ring circumference distribution of bellows of column foot ring steel sheet, the bellows with the reserved reinforcing bar on bottom longitudinal beam cooperation positioning. The utility model discloses through setting up column foot ring steel sheet and bellows, effectively overcome the problem of big degree of difficulty of subway station prefabricated column component verticality control in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a prefabricated column structure for prefabricated subway stations. Background Technology

[0002] With the acceleration of urbanization, subways, as an important part of urban transportation, are seeing a continuous increase in their construction mileage. Fully prefabricated modular subway stations have attracted widespread attention due to their advantages such as fast construction speed, small footprint, labor savings, and low carbon footprint.

[0003] The fully prefabricated subway station is mainly assembled from multiple rings of prefabricated components. Each ring of prefabricated components consists of a base slab, columns, longitudinal beams, side slabs, a first roof slab, a second roof slab, and a middle slab. During the open-cut construction of the subway station, the foundation pit is excavated first. Reaction frames are pre-embedded at the connection between the cast-in-place tunnel section and the subway station. By installing the prefabricated components at the bottom of the foundation pit and fixing the prefabricated components to the reaction frames, multiple prefabricated components are assembled to form the main structure of the subway station.

[0004] However, due to the high height of each floor in subway stations, the height of prefabricated column components also increases, making it difficult to precisely control their verticality during installation, which can easily affect the installation of the top longitudinal beams. As a crucial load-bearing component of the station's main structure, the top longitudinal beams require precise alignment with the columns. If the columns are tilted, the installation position and angle of the top longitudinal beams will deviate, potentially leading to a loose connection between the beam and column, resulting in uneven stress distribution and ultimately affecting the stability and safety of the entire station's main structure. Furthermore, correcting verticality deviations may require additional adjustment procedures, delaying construction progress and increasing construction costs. Utility Model Content

[0005] In order to overcome the problem that the verticality control of prefabricated column components in subway stations is difficult and affects subsequent construction, this utility model provides a prefabricated column structure for prefabricated subway stations.

[0006] The technical solution of this utility model is as follows:

[0007] A prefabricated column structure for prefabricated subway stations includes a reinforced concrete column. The bottom of the reinforced concrete column is provided with a column base ring steel plate. The column base ring steel plate cooperates with the anchor bolt positioning frame on the bottom longitudinal beam to fix the reinforced concrete column on the bottom longitudinal beam. Multiple corrugated pipes are provided in the middle of the bottom of the reinforced concrete column, which are distributed circumferentially along the inner circle of the column base ring steel plate. The corrugated pipes cooperate with the reserved reinforcing bars on the bottom longitudinal beam for positioning.

[0008] As a preferred embodiment of this utility model, the top of the concrete reinforced concrete column is provided with two symmetrically distributed first embedded hanging parts, and the front of the concrete reinforced concrete column is provided with two symmetrically distributed second embedded hanging parts.

[0009] As a preferred embodiment of this utility model, the concrete reinforced column is provided with vertical main bars and column stirrups connecting the vertical main bars.

[0010] As a preferred embodiment of this utility model, the top of the reinforced concrete column is provided with a corbel beam support.

[0011] As a preferred embodiment of this utility model, the corbel beam support is provided with corbel main reinforcing bars, corbel closed stirrups connecting the vertical main reinforcing bars of the column, and corbel shear reinforcement connecting the corbel main reinforcing bars and the corbel closed stirrups.

[0012] As a preferred embodiment of this utility model, the corbel beam support is provided with multiple steel reinforcement grouting sleeves inside. The positions of the steel reinforcement grouting sleeves correspond one-to-one with the positions of the vertical main reinforcement bars of the column. The upper end of the vertical main reinforcement bar of the column is inserted into the lower end of the corresponding steel reinforcement grouting sleeve. The upper end of the steel reinforcement grouting sleeve extends to the top surface of the corbel beam support and cooperates with the node connecting reinforcement bars.

[0013] As a preferred embodiment of this utility model, the side of the steel bar grouting sleeve is provided with a grout outlet hole and a grouting hole.

[0014] In a preferred embodiment of this utility model, the grout outlet is connected to a grout outlet pipe, the grouting hole is connected to a grouting pipe, and both the grout outlet pipe and the grouting pipe extend out from the side of the corbel beam support.

[0015] As a preferred embodiment of this utility model, the column base annular steel plate is provided with a plurality of bolt holes along its circumferential edge that match the holes of the anchor bolt positioning frame.

[0016] As a preferred embodiment of this utility model, the top surface of the column base annular steel plate is welded with multiple vertical stiffening ribs, and the multiple vertical stiffening ribs are distributed around the concrete reinforced column.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model provides a prefabricated column structure for prefabricated subway stations. By setting up annular steel plates and corrugated pipes at the column bases, it effectively overcomes the problem of difficulty in controlling the verticality of prefabricated column components in subway stations in the prior art, ensuring the accuracy of column installation, and thus ensuring the precise connection between the top longitudinal beam and the column. This avoids deviations in the installation position and angle of the top longitudinal beam caused by column tilting, reduces the risk of loose beam-column connection and uneven stress, and improves the stability and safety of the entire station's main structure. At the same time, it reduces the additional adjustment procedures required to correct verticality deviations, avoiding delays in construction progress and increases in construction costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of the reinforcement details of a prefabricated column structure used in a prefabricated subway station according to one embodiment of the present invention;

[0021] Figure 2 This is a side view of the reinforcement details of a prefabricated column structure used in a prefabricated subway station according to one embodiment of the present invention;

[0022] Figure 3 This is a front view of a prefabricated column structure for a prefabricated subway station according to one embodiment of the present invention;

[0023] Figure 4 This is a side view of a prefabricated column structure for a prefabricated subway station according to one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the top surface of a prefabricated column structure for a prefabricated subway station according to one embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the bottom surface of a prefabricated column structure used in a prefabricated subway station according to one embodiment of the present invention.

[0026] In the diagram,

[0027] 1. Reinforced concrete column; 2. Column base ring steel plate; 201. Bolt hole; 3. Corrugated pipe; 4. First embedded lifting component; 5. Second embedded lifting component; 6. Vertical main reinforcement of column; 7. Column stirrups; 8. Corbel support beam; 9. Corbel main reinforcement; 10. Corbel closed stirrups; 11. Corbel shear reinforcement; 12. Reinforcement grouting sleeve; 1201. Grout outlet hole; 1202. Grouting hole; 13. Vertical stiffening rib. Detailed Implementation

[0028] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also declared that the embodiments described below are only for explaining this utility model and are not intended to limit this utility model.

[0029] It should be noted that the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used in the application's product, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a number of technical features. "A plurality" means two or more, unless otherwise explicitly defined. "Several" means one or more, unless otherwise explicitly defined.

[0030] Please see Figures 1 to 6This utility model provides a prefabricated column structure for prefabricated subway stations, including a reinforced concrete column 1. The bottom of the reinforced concrete column 1 is provided with a column base annular steel plate 2. The column base annular steel plate 2 cooperates with the anchor bolt positioning frame on the bottom longitudinal beam to fix the reinforced concrete column 1 to the bottom longitudinal beam. Multiple corrugated pipes 3 are arranged circumferentially along the inner ring of the column base annular steel plate 2 at the center of the bottom of the reinforced concrete column 1. The corrugated pipes 3 cooperate with the reserved reinforcing bars on the bottom longitudinal beam for positioning. The precise cooperation between the column base annular steel plate 2 and the anchor bolt positioning frame provides a stable benchmark for the column installation, helping to initially control the verticality of the column during installation and preventing horizontal displacement during installation, laying the foundation for subsequent precise positioning and fixing. The positioning of the corrugated pipes 3 in cooperation with the reserved reinforcing bars on the bottom longitudinal beam further enhances the accuracy of the column installation. Because the inner wall of the corrugated pipe 3 has a certain degree of flexibility and friction, when the pre-reserved insert is inserted into the corrugated pipe 3, the two can fit tightly together, which can accurately control the position of the column in the horizontal direction, thereby more effectively ensuring the verticality of the column and ensuring that the column installation meets the design requirements. At the same time, it enables the column to achieve self-positioning during the installation process, reducing the workload and errors of manual adjustment, and improving installation efficiency and quality.

[0031] The prefabricated column structure used in the aforementioned prefabricated subway station ensures the accuracy of column installation by incorporating annular steel plates 2 and corrugated pipes 3 at the column bases. This, in turn, guarantees precise alignment between the top longitudinal beam and the column, preventing deviations in the installation position and angle of the top longitudinal beam caused by column tilting. This reduces the risk of loose beam-column connections and uneven stress, improving the stability and safety of the entire station's main structure. Simultaneously, it reduces the additional adjustment procedures required to correct verticality deviations, avoiding delays in construction progress and increases in construction costs.

[0032] Please see Figures 1 to 5 In a preferred embodiment, the top of the reinforced concrete column 1 is provided with two symmetrically distributed first embedded lifting parts 4, and the front of the reinforced concrete column 1 is provided with two symmetrically distributed second embedded lifting parts 5. When the precast column structure arrives on site, it is lifted by a gantry crane trolley through the two second embedded lifting parts 5 at double lifting points and stored at the end of the long mileage section. Square timber is placed in advance, and the precast column structure is stored on the square timber. After the precast column structure is in place, the wire rope on the second embedded lifting part 5 near the first embedded lifting part 4 is removed. When installing and hoisting the precast column structure, a three-point hoisting method is used. The two first embedded lifting parts 4 at the top of the column are two lifting points, and the second embedded lifting part 5 on the side of the column body away from the first embedded lifting parts 4 is one lifting point. After being transported to the hoisting position, the column top lifting point is raised, and the column body lifting point is lowered to complete the turning. After the precast column structure is stable, it is slowly lowered to the installation position of the bottom longitudinal beam embedded part.

[0033] In this embodiment, by reasonably setting the first embedded lifting component 4 and the second embedded lifting component 5, the hoisting process of the precast column structure is optimized, the safety, stability and efficiency of the hoisting operation are improved, the risk of damage that may occur during the hoisting process is reduced, and the precast column can be accurately and stably installed in the designated position.

[0034] Please see Figure 1 , Figure 2 In a preferred embodiment, the reinforced concrete column 1 is provided with vertical main reinforcement bars 6 and stirrups 7 connecting the vertical main reinforcement bars 6. The provision of the vertical main reinforcement bars 6 and stirrups 7 enhances the structural strength and stability of the reinforced concrete column 1, improves the load-bearing capacity of the column, and enables it to better withstand various loads generated during the operation of the subway station, thus ensuring the safety of the main structure of the station.

[0035] Please see Figure 1 , Figure 3 , Figure 4 In a preferred embodiment, a corbel support 8 is provided at the top of the reinforced concrete column 1. The corbel support 8 contains corbel main reinforcing bars 9, corbel closed stirrups 10 connecting the vertical main reinforcing bars 6 of the column, and corbel shear reinforcement 11 connecting the corbel main reinforcing bars 9 and the corbel closed stirrups 10. The corbel support 8 facilitates the connection between the top longitudinal beam and the reinforced concrete column 1, improving the reliability and stability of the connection. Simultaneously, by rationally configuring the corbel main reinforcing bars 9, corbel closed stirrups 10, and corbel shear reinforcement 11, the structural strength of the corbel support 8 is enhanced, enabling it to better withstand the load transmitted by the top longitudinal beam and ensuring the integrity and safety of the station's main structure.

[0036] Please see Figures 1 to 5In a preferred embodiment, multiple reinforcing steel grouting sleeves 12 are provided inside the corbel beam support 8. The positions of the reinforcing steel grouting sleeves 12 correspond one-to-one with the positions of the vertical main reinforcement bars 6 of the column. The upper end of the vertical main reinforcement bar 6 is inserted into the lower end of the corresponding reinforcing steel grouting sleeve 12, and the upper end of the reinforcing steel grouting sleeve 12 extends to the top surface of the corbel beam support 8 and cooperates with the node connecting reinforcement bars. The side of the reinforcing steel grouting sleeve 12 is provided with a grout outlet hole 1201 and a grouting hole 1202. The grout outlet hole 1201 is connected to a grout outlet pipe, and the grouting hole 1202 is connected to a grouting pipe. Both the grout outlet pipe and the grouting pipe extend from the side of the corbel beam support 8. The grouting pipe connected to the grouting hole 1202 facilitates the injection of grout into the reinforcing steel grouting sleeve 12, while the grout outlet pipe connected to the grout outlet hole 1201 is used to expel air and excess grout from the sleeve, ensuring that the grout can fully fill the inside of the sleeve, eliminating air bubbles and gaps, and guaranteeing the connection quality. Once the connecting steel bars are inserted into the upper end of the grouting sleeve 12, grouting can be performed through the grouting hole 1202. The grouting sleeve 12 provides a precise connection space for the vertical main reinforcement 6 of the column and the connecting steel bars, and the grouting achieves a reliable connection between the steel bars and the sleeve, and between the steel bars themselves. This allows the connection node between the column and the top longitudinal beam to withstand greater tensile and compressive forces, improving the mechanical properties of the connection.

[0037] Please see Figure 6 In a preferred embodiment, the column base annular steel plate 2 is provided with a plurality of bolt holes 201 along its circumferential edge, which mate with the holes of the anchor bolt positioning frame. The bolt holes 201 provide a precise position for the installation of high-strength bolts, ensuring that the column base annular steel plate 2 and the anchor bolt positioning frame can be accurately connected, facilitating positioning and fixing during the installation process, and improving the accuracy and efficiency of the installation.

[0038] Please see Figures 1 to 4 In a preferred embodiment, multiple vertical stiffening ribs 13 are welded to the top surface of the column base annular steel plate 2, and these ribs 13 are distributed around the perimeter of the reinforced concrete column 1. The vertical stiffening ribs 13 increase the moment of inertia of the column base annular steel plate 2, improving its bending and shear resistance. When the column is under load, the vertical stiffening ribs 13 can transfer part of the load over a larger area, dispersing stress concentration at the column base and reducing the possibility of deformation and cracking. Simultaneously, the welding method ensures the connection strength between the vertical stiffening ribs 13 and the column base annular steel plate 2, enabling them to work together and share the load.

[0039] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0040] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A prefabricated column structure for prefabricated subway stations, comprising reinforced concrete columns, characterized in that, The bottom of the reinforced concrete column is provided with a column base ring steel plate. The column base ring steel plate cooperates with the anchor bolt positioning frame on the bottom longitudinal beam to fix the reinforced concrete column on the bottom longitudinal beam. Multiple corrugated pipes are provided in the middle of the bottom of the reinforced concrete column, which are distributed circumferentially along the inner circle of the column base ring steel plate. The corrugated pipes cooperate with the reserved reinforcing bars on the bottom longitudinal beam for positioning.

2. The prefabricated column structure for prefabricated subway stations according to claim 1, characterized in that, The top of the reinforced concrete column is provided with two symmetrically distributed first embedded hanging parts, and the front of the reinforced concrete column is provided with two symmetrically distributed second embedded hanging parts.

3. The prefabricated column structure for prefabricated subway stations according to claim 1, characterized in that, The concrete reinforced concrete column is equipped with vertical main bars and column stirrups that connect the vertical main bars.

4. The prefabricated column structure for prefabricated subway stations according to claim 3, characterized in that, The top of the reinforced concrete column is provided with a corbel beam support.

5. The prefabricated column structure for prefabricated subway stations according to claim 4, characterized in that, The corbel support is internally provided with corbel main reinforcing bars, corbel closed stirrups connecting the vertical main reinforcing bars of the column, and corbel shear reinforcement connecting the corbel main reinforcing bars and the corbel closed stirrups.

6. The prefabricated column structure for prefabricated subway stations according to claim 4, characterized in that, Multiple steel reinforcement grouting sleeves are installed inside the corbel beam support. The position of the steel reinforcement grouting sleeve corresponds one-to-one with the position of the vertical main reinforcement of the column. The upper end of the vertical main reinforcement of the column is inserted into the lower end of the corresponding steel reinforcement grouting sleeve. The upper end of the steel reinforcement grouting sleeve extends to the top surface of the corbel beam support and cooperates with the node connecting reinforcement.

7. The prefabricated column structure for prefabricated subway stations according to claim 6, characterized in that, The side of the steel bar grouting sleeve is provided with a grout outlet hole and a grouting hole.

8. The prefabricated column structure for prefabricated subway stations according to claim 7, characterized in that, The grout outlet is connected to a grout outlet pipe, and the grouting hole is connected to a grouting pipe. Both the grout outlet pipe and the grouting pipe extend out from the side of the corbel beam support.

9. The prefabricated column structure for prefabricated subway stations according to claim 1, characterized in that, The column base annular steel plate has multiple bolt holes along its circumferential edge that mate with the holes of the anchor bolt positioning frame.

10. The prefabricated column structure for prefabricated subway stations according to claim 1, characterized in that, Multiple vertical stiffening ribs are welded to the top surface of the annular steel plate at the column base, and these vertical stiffening ribs are distributed around the reinforced concrete column.

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