Non-stop capping structure for exit and entrance section of existing metro vehicle depot
By adopting a combined structure of prefabricated primary and secondary beams and cast-in-place concrete in the subway depot, the problem that traditional construction methods cannot meet the needs of large span capping is solved, and the construction convenience and construction efficiency are improved.
Patent Information
- Application Number
- CN202421186503.8
- 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
When the existing subway depots are covered, the traditional cast-in-place concrete structure construction method cannot meet the needs of large spans of entry and exit sections, resulting in limited construction and increased difficulty.
The combined structure of prefabricated main and secondary beams and cast-in-place concrete is adopted, and the construction is carried out above the entrance and exit section area through the prefabricated beam + plate structure. The connection between the prefabricated main beam and the cast-in-place structural column is used, and the lifting and erection of prefabricated cross beams and secondary beams is combined to form an overall structure.
It has achieved the reduction of construction difficulty, improved construction convenience, and avoided the construction restriction of traditional structure construction when existing subway depots are not stopped.
Smart Images
Figure CN222614295U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engineering construction, and in particular relates to a non-stop covering structure for an existing subway vehicle depot entrance and exit section. 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 entrance and exit sections, and at the same time 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 difficulty of construction. Therefore, a non-stop added structure for the entrance and exit of 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 non-stop covered structure for the entrance and exit sections of an existing subway depot, including an entrance and exit section area arranged from the front to the rear of the subway, 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 number of prefabricated main beams are horizontally arranged between the two rows of the 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, and a number of prefabricated cross beams are horizontally arranged between two adjacent prefabricated main beams.
[0005] Furthermore, the cast-in-place structural column 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 corbels, and both ends of a number of prefabricated main beams are erected on two adjacent supporting corbels by hoisting, and the upper ends of the cast-in-place columns are pre-embedded with first I-beams, and the two ends of the prefabricated main beams are pre-embedded with second I-beams, and the first I-beam and the second I-beam are connected by a reserved steel structure.
[0006] 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 prefabricated main beam to form an integral structure.
[0007] Furthermore, main beam ears are horizontally provided on the front and rear sides of the prefabricated main beam along the length direction, and a plurality of the prefabricated cross beams are all arranged on the main beam ears.
[0008] 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.
[0009] Furthermore, the prefabricated cross beam is composed of a horizontally arranged prefabricated base plate and two secondary beams. The two secondary beams are respectively fixed on both sides of the lower surface of the prefabricated base plate along the length direction. The secondary beams are erected on the main beam ears by hoisting. Second anchoring steel bars are reserved at both ends of the secondary beams. The second anchoring steel bars are located in the grooves. The secondary beams are connected to the prefabricated main beams through the first anchoring steel bars and the second anchoring steel bars.
[0010] The advantages of the utility model are: the purpose of the utility model is to provide a non-stop covered structure for the entrance and exit section of an existing subway depot, which adopts a combined structure of prefabricated main and secondary beams, slabs and cast-in-place concrete, and a prefabricated beam + slab structure is adopted above the non-stop covered entrance and exit area, so as to solve the structural connection problem in the non-stop construction mode of the existing subway depot, thereby reducing the construction difficulty, improving the convenience of construction, and avoiding the construction limit encroachment problem of traditional structural construction.
[0011] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model.
[0013] Figure 2 It is a schematic diagram of the cast-in-place column structure of the utility model.
[0014] Figure 3 It is a schematic diagram of the prefabricated main beam structure of the utility model.
[0015] Figure 4 It is a schematic diagram of the connection between the cast-in-place column and the prefabricated main beam node of the utility model.
[0016] Figure 5 It is a structural schematic diagram of the prefabricated main beam and prefabricated secondary beam of the utility model.
[0017] Figure 6 It is a schematic diagram of the prefabricated secondary beam structure of the utility model.
[0018] Figure 7 It is a schematic diagram of the connection structure of the prefabricated main beam and the prefabricated secondary beam of the utility model.
[0019] Explanation of the reference numerals in the accompanying drawings: 1. Entrance and exit area; 2. Cast-in-place structural column; 21. Cast-in-place column; 22. Support corbel; 3. Precast main beam; 4. Precast cross beam; 41. Precast bottom plate; 42. Secondary beam; 5. First I-beam; 6. Second I-beam; 7. Main beam ear; 8. Groove; 9. First anchoring steel bar; 10. Second anchoring steel bar. DETAILED DESCRIPTION
[0020] 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.
[0021] 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.
[0022] 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.
[0023] 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.
[0024] Example 1
[0025] This embodiment provides Figure 1 to Figure 7 The shown structure is a non-stop covered structure for the entrance and exit section of an existing subway depot, including 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 the left and right sides of the entrance and exit section 1, a number of prefabricated main beams 3 are horizontally arranged between the 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, and a number of prefabricated cross beams 4 are horizontally arranged between two adjacent prefabricated main beams 3.
[0026] Furthermore, the cast-in-place structural column 2 includes two cast-in-place columns 21, which are respectively vertically arranged 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 corbels 22. Both ends of a number of prefabricated main beams 3 are erected on two adjacent supporting corbels 22 by hoisting. The upper ends of the cast-in-place columns 21 are pre-embedded with first I-beams 5, and both ends of the prefabricated main beams 3 are pre-embedded with second I-beams 6. The first I-beam 5 and the second I-beam 6 are connected by a reserved steel structure.
[0027] Furthermore, after the first I-beam 5 and the second I-beam 6 are connected by the reserved steel structure, the connection node between the cast-in-place column 21 and the prefabricated main beam 3 is poured with grouting material to form an integral structure.
[0028] Furthermore, main beam ears 7 are horizontally provided at the front and rear sides of the prefabricated main beam 3 along the length direction, and a plurality of prefabricated cross beams 4 are all arranged on the main beam ears 7 .
[0029] Furthermore, the upper surface of the prefabricated main beam 3 is provided with a plurality of grooves 8 spaced in sequence along the length direction, the upper surface of the main beam ear 7 is flush with the bottom surface of the groove 8, and the groove 8 is anchored and connected by a first anchor steel bar 9.
[0030] Furthermore, the prefabricated cross beam 4 is composed of a horizontally arranged prefabricated base plate 41 and two secondary beams 42. The two secondary beams 42 are respectively fixed on both sides of the lower surface of the prefabricated base plate 41 along the length direction. The secondary beams 42 are erected on the main beam ears 7 by hoisting. Second anchor steel bars 10 are reserved at both ends of the secondary beams 42. The second anchor steel bars 10 are located in the grooves 8. The secondary beams 42 are connected to the prefabricated main beam 3 through the first anchor steel bars 9 and the second anchor steel bars 10.
[0031] During construction, first construct cast-in-place columns 21 on both sides of the entrance and exit section area 1 that are covered without stopping operation, and pre-embed the first I-beam 5 in the upper end area of the cast-in-place column 21 and extend the cast-in-place column 21, and then construct support brackets 22 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, and the support brackets 22 are cast together with the cast-in-place columns 21; the precast main beam 3 has a second I-beam 6 pre-embedded in the internal area and extends at both ends, and then is hoisted and connected to the first I-beam 5 pre-embedded in the cast-in-place column 21, and the first I-beam 5 of the cast-in-place column 21 is connected to the second I-beam 6 of the precast main beam 3 through a reserved steel structure, which is specifically connected in the form of welding and bolts; main beam ears 7 are provided on both sides of the precast main beam 3 to meet the structural needs of supporting the precast cross beam 4, Then, according to the actual design, structural grooves 8 are reserved at different intervals above the prefabricated main beam 3 structure, and after the prefabricated cross beam 4 is hoisted, it can be cast to form a whole; the secondary beam 42 and the prefabricated bottom plate 41 are prefabricated as a whole to form a prefabricated cross beam 4, specifically, a secondary beam 42 is arranged on both sides of a prefabricated bottom plate 41, and the second anchor steel bars 10 are reserved at both ends of the secondary beam 42. The prefabricated cross beam 4 is hoisted to the main beam ear 7, and the second anchor steel bars 10 at the secondary beam 42 are extended into the reserved structural groove 8 on the prefabricated main beam 3 for connection; after the prefabricated structure is hoisted as a whole, the cast-in-place columns 21, the prefabricated main beam 3, the prefabricated bottom plate 41 and each node of the secondary beam 42 and the structural surface are simultaneously cast and constructed to the structural design elevation, forming a non-stop covered structure for the entrance and exit section of the existing subway depot
[0032] In summary, the purpose of the utility model is to provide a non-stop covered structure for the entrance and exit sections of existing subway depots, which adopts a combined structure of prefabricated main and secondary beams 42, plates and cast-in-place concrete, and a prefabricated beam + plate structure is used above the non-stop covered entrance and exit area 1, to solve the structural connection problem in the non-stop construction mode of the existing subway depot, thereby reducing the construction difficulty, improving the convenience of construction, and avoiding the construction limit problem of traditional structural construction. The above content is a further detailed description of the utility model in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, several simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the utility model.
Claims
1. A non-stop covering structure for the entrance and exit sections of an existing subway depot, characterized in that: The invention comprises an entrance and exit section area (1) arranged from the front to the back of the 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 the 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, and a plurality of prefabricated cross beams (4) are arranged horizontally between two adjacent prefabricated main beams (3).
2. A non-stop covering structure for entrance and exit sections of existing subway depots as claimed in claim 1, characterized in that: The cast-in-place structural column (2) comprises two cast-in-place columns (21), the two cast-in-place columns (21) are respectively vertically arranged on both sides of the entrance and exit section area (1), the upper ends of the two cast-in-place columns (21) on opposite sides are fixedly connected with supporting brackets (22), both ends of a plurality of prefabricated main beams (3) are erected on two adjacent supporting brackets (22) by hoisting, the upper ends of the cast-in-place columns (21) are pre-embedded with first I-beams (5), the two ends of the prefabricated main beams (3) are pre-embedded with second I-beams (6), and the first I-beams (5) and the second I-beams (6) are connected by a reserved steel structure.
3. The non-stop operation covering structure for the entrance and exit sections of an existing subway depot as claimed in claim 2, characterized in that: After the first I-beam (5) and the second I-beam (6) 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 main beam (3) to form an integral structure.
4. The non-stop operation covering structure for the entrance and exit sections of existing subway depots as claimed in claim 1, characterized in that: Main beam ears (7) are horizontally arranged at the front and rear sides of the prefabricated main beam (3) along the length direction, and a plurality of the prefabricated cross beams (4) are all arranged on the main beam ears (7).
5. The non-stop operation covering structure for the entrance and exit sections of existing subway depots as claimed in claim 4, characterized in that: The upper surface of the prefabricated main beam (3) is provided with a plurality of grooves (8) spaced in sequence along the length direction; the upper surface of the main beam lug (7) is flush with the bottom surface of the groove (8); and the groove (8) is anchored and connected via a first anchoring steel bar (9).
6. The non-stop operation covering structure for the entrance and exit sections of an existing subway depot as claimed in claim 5, characterized in that: The prefabricated cross beam (4) is composed of a horizontally arranged prefabricated bottom plate (41) and two secondary beams (42). The two secondary beams (42) are respectively fixed on both sides of the lower surface of the prefabricated bottom plate (41) along the length direction. The secondary beams (42) are erected on the main beam ears (7) by hoisting. Second anchoring steel bars (10) are reserved at both ends of the secondary beam (42). The second anchoring steel bars (10) are located in the groove (8). The secondary beam (42) is connected to the prefabricated main beam (3) through the first anchoring steel bars (9) and the second anchoring steel bars (10).