Novel cast-in-place column and precast beam connecting structure for existing vehicle depot of subway

Abstract

The utility model provides a novel cast-in-place column and precast beam connecting structure for an existing vehicle depot of a subway, which belongs to the technical field of engineering construction and comprises an entrance and exit section area of the subway, and a cast-in-place structural column assembly is arranged on the entrance and exit section area and comprises two cast-in-place columns. Supporting brackets are fixedly connected to the upper ends of the opposite sides of the two cast-in-place columns correspondingly, a precast beam is horizontally arranged between the two cast-in-place columns, first I-shaped steel is pre-buried in the upper ends of the cast-in-place columns correspondingly, and second I-shaped steel is pre-buried in the two ends of the precast beam correspondingly. The utility model aims to provide the novel cast-in-place column and precast beam connecting structure for the existing metro vehicle depot, and the connecting structure solves the problem of structural connection under a non-stop construction mode of the existing metro vehicle depot by adopting a combined structure form of the precast beam and the cast-in-place concrete; therefore, the construction difficulty is reduced, the building convenience is improved, and the construction limit invasion problem of traditional structure construction is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering construction, and specifically relates to a connection structure of a new type of cast-in-situ column and a prefabricated beam in an existing vehicle section of a subway. Background Art

[0002] With the vigorous development of the urban TOD development model, the efficient utilization and development of land resources oriented to public transportation has entered a rapid development and maturity stage. There are few research results on the construction of existing subway depots in China. There are technical difficulties that need to be solved in the actual construction process. How to ensure safe operation and maintenance while carrying out efficient and high-quality construction, and developing structural construction technology under the construction mode of subway existing depot covers, is an important reference for improving the development of urban TOD models and construction technology.

[0003] In order to ensure the conditions for the large-span construction of the access line section 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 new type of cast-in-place column and precast beam connection structure for 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 a new type of cast-in-place column and precast beam in an existing vehicle depot of a subway, including an entrance and exit section area of ​​a subway, wherein a cast-in-place structural column assembly is provided in the entrance and exit section area, and the cast-in-place structural column assembly includes two cast-in-place columns, and the two cast-in-place columns are respectively vertically arranged on both sides of the entrance and exit section area, and the upper ends of the two cast-in-place columns on opposite sides are fixedly connected with supporting brackets, and a precast beam is horizontally arranged between the two cast-in-place columns, and the two ends of the precast beam are erected on the two supporting brackets by hoisting, and the upper ends of the cast-in-place columns are pre-embedded with a first I-beam, and the two ends of the precast beam are pre-embedded with a second I-beam, and the first I-beam and the second I-beam are connected by a reserved steel structure.

[0005] Furthermore, after the first I-beam and the second I-beam are connected by a reserved steel structure, a grouting material is poured at a connection node between the cast-in-place column and the precast beam to form an integral structure.

[0006] Furthermore, the cast-in-place structural column assemblies are provided in a plurality of groups, and the plurality of groups of the cast-in-place structural column assemblies are arranged in sequence and at intervals along the length direction of the entrance and exit section area.

[0007] The advantages of the utility model are: the purpose of the utility model is to provide a new type of connection structure between cast-in-place columns and prefabricated beams in an existing subway vehicle depot. This connection structure adopts a combined structure of prefabricated beams and cast-in-place concrete to solve the structural connection problem in the existing subway vehicle depot without stopping operation. The construction difficulty is reduced, the convenience of construction is improved, and the construction limit problem of traditional structural construction is avoided.

[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 overall structure of the cast-in-place column and prefabricated beam of the utility model.

[0010] Figure 2 It is a schematic diagram of the cast-in-place column structure of the utility model.

[0011] Figure 3 It is a schematic diagram of the prefabricated beam structure of the utility model.

[0012] Figure 4 It is a schematic diagram of the connection between the cast-in-situ column and the prefabricated beam node of the utility model.

[0013] Explanation of the reference numerals: 1. Entrance and exit area; 2. Cast-in-place structural column assembly; 21. Cast-in-place column; 22. Support corbel; 23. Precast beam; 24. First I-beam; 25. Second I-beam. DETAILED DESCRIPTION

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] Example 1

[0019] This embodiment provides Figure 1 to Figure 4 The structure of connecting a new type of cast-in-place column and a precast beam of an existing subway depot shown in the figure comprises an entrance and exit section area 1 of the subway, a cast-in-place structural column assembly 2 is arranged on the entrance and exit section area 1, and the cast-in-place structural column assembly 2 comprises two cast-in-place columns 21, the two cast-in-place columns 21 are respectively arranged vertically on both sides of the entrance and exit section area 1, and the upper ends of the two cast-in-place columns 21 on opposite sides are fixedly connected with supporting brackets 22, and a precast beam 23 is arranged horizontally between the two cast-in-place columns 21, and the two ends of the precast beam 23 are hoisted and erected on the two supporting brackets 2 2, the upper ends of the cast-in-place columns 21 are pre-buried with first I-beams 24, the two ends of the precast beams 23 are pre-buried with second I-beams 25, the first I-beams 24 and the second I-beams 25 are connected by a reserved steel structure, after the first I-beams 24 and the second I-beams 25 are connected by the reserved steel structure, the connection nodes of the cast-in-place columns 21 and the precast beams 23 are poured with grouting material to form an integral structure, wherein the cast-in-place structural column assemblies 2 are provided with a plurality of groups, and the plurality of groups of cast-in-place structural column assemblies 2 are sequentially arranged and spaced along the length direction of the entrance and exit section area 1.

[0020] During construction, first construct the cast-in-place columns 21 on both sides of the entrance and exit section area 1 that are covered without stopping operation. The cast-in-place column 21 has a first I-beam 24 embedded in its upper end area and extends out of the cast-in-place column 21. Then, the supporting corbels 22 are constructed at the top of the columns on the opposite side of the cast-in-place columns 21 on both sides of the entrance and exit section area 1. The supporting corbels 22 are cast together with the cast-in-place columns 21. Then, the precast beam 23 has a second I-beam 25 embedded in the internal area and extends out at both ends. Then, it is hoisted and connected to the first I-beam 24 embedded in the cast-in-place column 21. The precast beam 23 is hoisted onto the supporting corbel 22. The precast beam 23 is connected to the cast-in-place column 21 through a reserved steel structure, which is specifically connected in the form of welding and bolts. After the overall connection is completed, grouting material is poured at the connection node between the cast-in-place column 21 and the precast beam 23 to form an overall structure, completing the final structural installation and connection.

[0021] To sum up, the purpose of the utility model is to provide a new type of connection structure between cast-in-place columns and precast beams of an existing subway depot. This connection structure adopts a combined structure of precast beams 23 and cast-in-place concrete to solve the structural connection problem in the existing subway depot without stopping operation. The construction difficulty is reduced, the convenience of construction is improved, and the construction limit problem of traditional structural construction is avoided.

[0022] 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 new type of connection structure between cast-in-place columns and prefabricated beams in an existing subway depot, characterized in that: The invention comprises an entrance and exit section area (1) of a subway, wherein a cast-in-place structural column assembly (2) is provided on the entrance and exit section area (1), wherein the cast-in-place structural column assembly (2) comprises two cast-in-place columns (21), wherein the two cast-in-place columns (21) are respectively vertically arranged on both sides of the entrance and exit section area (1), wherein the upper ends of the two cast-in-place columns (21) on opposite sides are fixedly connected with supporting brackets (22), wherein a precast beam (23) is horizontally arranged between the two cast-in-place columns (21), wherein both ends of the precast beam (23) are erected on the two supporting brackets (22) by hoisting, wherein the upper ends of the cast-in-place columns (21) are pre-embedded with first I-beams (24), and the two ends of the precast beam (23) are pre-embedded with second I-beams (25), and the first I-beam (24) and the second I-beam (25) are connected by a reserved steel structure.

2. A connection structure of a new type of cast-in-situ column and prefabricated beam in an existing subway vehicle depot as claimed in claim 1, characterized in that: After the first I-beam (24) and the second I-beam (25) are connected via a reserved steel structure, a grouting material is poured at the connection node between the cast-in-place column (21) and the prefabricated beam (23) to form an integral structure.

3. The connection structure of a new type of cast-in-situ column and prefabricated beam in an existing subway vehicle depot as claimed in claim 1, characterized in that: The cast-in-place structural column components (2) are provided in a plurality of groups, and the plurality of groups of cast-in-place structural column components (2) are arranged in sequence and at intervals along the length direction of the entrance and exit section area (1).

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