Connecting structure for prefabricated superposed main beam and secondary beam of existing metro depot
By adopting a prefabricated overlapping main beam and secondary beam connection structure in existing subway vehicle depots, the construction limitation and difficulty caused by traditional construction methods are solved, and a more efficient and convenient construction process is achieved.
Patent Information
- Application Number
- CN202421186505.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-28
AI Technical Summary
Under the non-stop construction mode of existing subway vehicle depots, the traditional cast-in-place concrete structure construction method has led to limited construction, increasing the difficulty of construction, and the inability to support the full frame, affecting construction efficiency and quality.
The connecting structure between the prefabricated superimposed main beam and secondary beam of the existing subway depot is adopted. The cast-in-place structural columns and prefabricated main beams are set up in the entrance and exit section area, and the prefabricated secondary beams are erected on the main beam lifting ears, and each structural component is connected by anchored steel bars to form a stable overall structure.
It reduces the difficulty of construction, improves the convenience of construction, avoids the construction limitations of traditional structure construction, and ensures the safety and quality of construction.
Smart Images
Figure CN222614525U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engineering construction, and in particular relates to a connection structure of prefabricated composite main beams and secondary beams in an existing vehicle section of a subway. Background Art
[0002] There are few research results on the construction of additional covers for existing subway depots in China. There are technical difficulties in the actual construction process that need to be solved urgently. How to ensure safe operation and maintenance while carrying out efficient and high-quality construction? The research and development of structural construction technology under the construction mode of additional covers for existing subway depots is an important reference for improving the development of urban TOD model and construction technology.
[0003] In order to ensure the construction conditions for large-span additions to the access line sections and ensure the normal use of the existing subway depot, if the traditional cast-in-place concrete structure construction method is adopted, the depot cannot be fully supported, which is not only inconvenient for construction, but also makes the construction of the added structure face the problem of construction restrictions, increasing the construction difficulty. Therefore, a connection structure of prefabricated composite main beams and secondary beams in the existing subway depot is needed to solve this problem. Utility Model Content
[0004] To achieve the above-mentioned purpose, the utility model provides a connection structure of prefabricated composite main beams and secondary beams of an existing vehicle depot of a subway, including an entrance and exit section area of the subway arranged from front to back, a row of vertical cast-in-place structural columns are arranged on the left and right sides of the entrance and exit section area, a plurality of prefabricated main beams are horizontally arranged between the two rows of cast-in-place structural columns, the two ends of the prefabricated main beams are respectively connected to the upper ends of the adjacent cast-in-place structural columns on both sides, main beam ears are horizontally arranged on the front and rear sides of the prefabricated main beams along the length direction, a plurality of prefabricated secondary beams are horizontally arranged between two adjacent prefabricated main beams, and the prefabricated secondary beams are erected on the main beam ears.
[0005] Furthermore, the upper surface of the prefabricated main beam is provided with a plurality of grooves spaced in sequence along the length direction, the upper surface of the main beam ear is flush with the bottom surface of the groove, and the groove is anchored and connected by a first anchor steel bar.
[0006] Furthermore, the prefabricated secondary beam is composed of a horizontally arranged prefabricated bottom plate and two secondary beams. The two secondary beams are respectively fixed on both sides of the lower surface of the prefabricated bottom plate along the length direction. The secondary beam is erected on the main beam ear by hoisting. Second anchoring steel bars are reserved at both ends of the secondary beam. The second anchoring steel bars are located in the groove. The secondary beam is connected to the prefabricated main beam through the first anchoring steel bar and the second anchoring steel bar.
[0007] The advantages of the utility model are: the purpose of the utility model is to provide a connection structure of prefabricated composite main beams and secondary beams in an existing subway vehicle depot. This new connection structure can solve the structural connection problem in the existing subway vehicle depot without stopping operation, thereby reducing the construction difficulty, improving the convenience of construction, and avoiding the construction limit problem of traditional structural construction.
[0008] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the structure of the utility model.
[0010] Figure 2 It is a schematic diagram of the structure of prefabricated composite main beams and prefabricated secondary beams.
[0011] Figure 3 It is a schematic diagram of the prefabricated composite main beam structure.
[0012] Figure 4 It is a schematic diagram of the prefabricated secondary beam structure.
[0013] Figure 5 It is a schematic diagram of the connection structure of the prefabricated composite main beam and the prefabricated secondary beam.
[0014] Explanation of the reference numerals: 1. Entrance and exit area; 2. Cast-in-place structural column; 3. Precast main beam; 4. Main beam ear; 5. Precast secondary beam; 51. Precast bottom plate; 52. Secondary beam; 6. Groove; 7. First anchoring steel bar; 8. Second anchoring steel bar. DETAILED DESCRIPTION
[0015] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments 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 ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "aligned", "overlap", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.
[0018] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0019] Example 1
[0020] This embodiment provides Figure 1 to Figure 5 The structure of connecting the prefabricated composite main beam and the secondary beam of the existing vehicle depot of the subway shown in the figure comprises an entrance and exit section area 1 arranged from the front to the back of the subway, a row of vertical cast-in-place structural columns 2 are arranged on both sides of the entrance and exit section area 1, a plurality of prefabricated main beams 3 are arranged horizontally between the two rows of cast-in-place structural columns 2, the two ends of the prefabricated main beam 3 are respectively connected to the upper ends of the cast-in-place structural columns 2 adjacent to the two sides, the front and rear sides of the prefabricated main beam 3 are horizontally provided with main beam ears 4 along the length direction, the upper surface of the prefabricated main beam 3 is sequentially spaced along the length direction. The upper surface of the main beam ear 4 is flush with the bottom surface of the groove 6. The two precast main beams 3 are aligned, and the grooves 6 are anchored and connected by the first anchoring steel bars 7. A number of precast secondary beams 5 are horizontally arranged between two adjacent precast main beams 3. The precast secondary beams 5 are erected on the main beam ears 4. The precast secondary beams 5 are composed of a horizontally arranged precast base plate 51 and two secondary beams 52. The two secondary beams 52 are respectively fixed on both sides of the lower surface of the precast base plate 51 along the length direction. The secondary beams 52 are erected on the main beam ears 4 by hoisting. Second anchoring steel bars 8 are reserved at both ends of the secondary beams 52. The second anchoring steel bars 8 are located in the grooves 6. The secondary beams 52 are connected to the precast main beams 3 through the first anchoring steel bars 7 and the second anchoring steel bars 8.
[0021] During construction, first construct the cast-in-place structural columns 2 on both sides of the entrance and exit section area 1 that are covered without stopping operation, and then connect and fix the prefabricated main beam 3 to the cast-in-place structural column 2 by hoisting. Among them, the prefabricated main beam 3 is embedded with an I-beam, which can be connected to the cast-in-place structural column 2. The main beam ears 4 set on both sides of the prefabricated main beam 3 are designed according to the actual design along the beam span direction;
[0022] Then, structural grooves 6 are reserved at different intervals on the prefabricated main beam 3, and after the prefabricated secondary beam 5 is hoisted, it can be cast to form a whole, wherein the secondary beam 52 and the prefabricated bottom plate 51 are prefabricated as a whole to form a prefabricated secondary beam 5, specifically, a secondary beam 52 is arranged on both sides of a prefabricated bottom plate 51, and second anchoring steel bars 8 are reserved at both ends of the secondary beam 52, and the prefabricated secondary beam 5 is hoisted to the main beam ear 4, and the second anchoring steel bars 8 at the secondary beam 52 are extended into the reserved structural groove 6 on the prefabricated main beam 3 for connection;
[0023] Finally, grouting material is poured at the connection nodes of the prefabricated main beam 3 and the prefabricated secondary beam 5 to form an integral structure, completing the final structural installation and connection.
[0024] To sum up, the purpose of the utility model is to provide a connection structure of prefabricated composite main beams and secondary beams of an existing subway vehicle depot. This new connection structure can solve the structural connection problem in the existing subway vehicle depot without stopping operation, thereby reducing the construction difficulty, improving the convenience of construction, and avoiding the construction limit problem of traditional structural construction.
[0025] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A connection structure of prefabricated composite main beams and secondary beams in an existing subway vehicle depot, characterized in that: The invention comprises an entrance and exit section area (1) arranged from front to back of a subway, wherein a row of vertical cast-in-place structural columns (2) are arranged on both sides of the entrance and exit section area (1), a plurality of prefabricated main beams (3) are arranged horizontally between two rows of cast-in-place structural columns (2), the two ends of the prefabricated main beams (3) are respectively connected to the upper ends of the adjacent cast-in-place structural columns (2) on both sides, main beam ears (4) are arranged horizontally on the front and rear sides of the prefabricated main beams (3) along the length direction, and a plurality of prefabricated secondary beams (5) are arranged horizontally between two adjacent prefabricated main beams (3), and the prefabricated secondary beams (5) are erected on the main beam ears (4).
2. The connection structure of the prefabricated composite main beam and secondary beam of an existing subway vehicle depot as claimed in claim 1, characterized in that: The upper surface of the prefabricated main beam (3) is provided with a plurality of grooves (6) spaced in sequence along the length direction; the upper surface of the main beam lug (4) is flush with the bottom surface of the groove (6); and the groove (6) is anchored and connected via a first anchoring steel bar (7).
3. The connection structure of the prefabricated composite main beam and secondary beam of an existing subway vehicle depot as claimed in claim 2, characterized in that: The prefabricated secondary beam (5) is composed of a horizontally arranged prefabricated bottom plate (51) and two secondary beams (52). The two secondary beams (52) are respectively fixed on both sides of the lower surface of the prefabricated bottom plate (51) along the length direction. The secondary beam (52) is erected on the main beam ear (4) by hoisting. Second anchoring steel bars (8) are reserved at both ends of the secondary beam (52). The second anchoring steel bars (8) are located in the groove (6). The secondary beam (52) is connected to the prefabricated main beam (3) through the first anchoring steel bars (7) and the second anchoring steel bars (8).