Method for connecting rail transit protection area external engineering and operation station main body structure

Abstract

The invention relates to a method for connecting a rail transit protection area external project and an operation station main body structure. The method is suitable for the technical field of rail transit engineering construction. According to the technical scheme, the method comprises the steps that a first-stage connecting channel is constructed from an external project to a project door opening position of a station main body structure till the distance between the first-stage connecting channel and the station main body structure reaches a preset range; a station enclosure corresponding to the station main body structure engineering door opening is chiseled away, so that a construction channel matched with the station main body structure engineering door opening is formed in the station enclosure; arranging a channel steel bar structure in the second-stage connecting channel, wherein the channel steel bar structure is connected with a steel bar structure in the station main body structure; one end of the second-stage connecting channel is connected with an engineering door opening of the station main body structure, and the other end of the second-stage connecting channel penetrates through a construction channel on a station enclosure to be connected with the first-stage connecting channel; and a second-stage connecting channel is poured.

Description

Technical Field

[0001] The present invention relates to a method for connecting an external project of a rail transit protection zone with a main structure of an operating station, and is applicable to the technical field of rail transit engineering construction. Background Art

[0002] The construction process of rail transit projects often involves the connection construction between external projects and the main structure of operating stations, but the existing construction methods are relatively complicated and the construction period is long.

[0003] During the construction of rail transit projects, the commonly used methods for connecting the external project with the main structure of the operating station include traditional structural transformation and reinforcement methods, prefabricated assembly methods, on-site casting methods and jacking methods. Prefabricated assembly construction methods have been applied in subway projects in many cities, such as Changchun Metro Line 2, Beijing, Qingdao and Shenzhen subway station construction. These projects usually adopt the prefabricated assembly method, prefabricating the main structure of the station in the factory, and then transporting it to the site for splicing, thereby shortening the construction period, improving the quality of the project, and reducing the impact on the environment. Compared with the prefabricated assembly methods in existing engineering examples, this application has stronger applicability and flexibility, and can provide suitable connection methods for different structural conditions. Through the steel bar connector and the inverted bracket structure, a more stable and reliable connection is achieved, reducing the impact on the original station structure, and it is more advantageous in the complex environment of the operating station, and can reduce the construction cost.

[0004] Therefore, this method solves the problems of long construction period, high difficulty and great impact on the operating environment existing in traditional construction methods in terms of simplifying construction process, improving construction efficiency and adapting to various construction conditions. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the above-mentioned problems, a method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station is provided, which has a simple structure, is convenient to construct and has a short construction period.

[0006] The technical solution adopted by the present invention is: a method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station, characterized in that it includes:

[0007] Construct a first-phase connecting passage from the external engineering to the engineering door opening of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range;

[0008] Chisel away the station enclosure corresponding to the door opening of the station main structure project to form a construction passage on the station enclosure that is compatible with the door opening of the station main structure project;

[0009] Arrange a channel reinforcement structure in the second-phase connecting channel, and the channel reinforcement structure is connected to the reinforcement structure in the main structure of the station; one end of the second-phase connecting channel is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first-phase connecting channel;

[0010] Casting of the second phase connecting channel.

[0011] A method for connecting an external project of a rail transit protection zone with a main structure of an operating station, characterized by comprising:

[0012] Construct a first-phase connecting passage from the external project to the planned construction project door opening on the main structure of the station until the distance between the first-phase connecting passage and the main structure of the station reaches the preset range;

[0013] Chisel away the station enclosure corresponding to the planned construction doorway to form a construction passage on the station enclosure that matches the construction doorway;

[0014] Chisel away the inner lining wall within the scope of the proposed engineering door opening on the main structure of the station to form an engineering door opening on the main structure;

[0015] Arrange a channel reinforcement structure in the second-phase connecting channel, and the channel reinforcement structure is connected to the reinforcement structure in the main structure of the station; one end of the second-phase connecting channel is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first-phase connecting channel;

[0016] Casting of the second phase connecting channel.

[0017] A steel bar connector is pre-buried in the main structure of the station at the location corresponding to the engineering doorway, which is convenient for connection with the channel steel bar structure in the second-phase connecting channel.

[0018] When chiseling out the station enclosure corresponding to the project door opening, some steel bars are reserved for connecting the second phase connecting channel and the station enclosure.

[0019] An inner beam-column structure is provided corresponding to the edge of the engineering door opening, and the steel bars in the inner beam-column structure are connected to the channel steel bar structure.

[0020] An outer beam-column structure is provided corresponding to the edge of the construction channel, and the steel bars in the outer beam-column structure are connected to the channel steel bar structure.

[0021] An inverted corbel structure is provided corresponding to the bottom plate of the second-phase connecting passage, and the steel bars in the inverted corbel structure are welded and connected to the steel bars on the station enclosure.

[0022] An inverted corbel structure is provided corresponding to the top plate of the second-phase connecting passage, and the steel bars in the inverted corbel structure are welded and connected to the steel bars on the station enclosure.

[0023] The first phase connecting passage is 1 meter away from the station enclosure.

[0024] The beneficial effects of the present invention are as follows: the present invention constructs the connecting passage in phases, and after the distance between the first-phase connecting passage and the main structure of the station reaches a preset range, the station enclosure, the main structure of the station, etc. are constructed, and finally the second-phase connecting passage connecting the engineering doorway and the first-phase connecting passage is constructed. The structure is simple, the construction is convenient, the construction period is short, and it is safe and reliable.

[0025] When the present invention is constructing the station enclosure, the station main structure, etc., the first-phase connecting channel has been constructed to a certain range outside the station enclosure, and the soil structure outside the station enclosure construction area is basically stable. When the station enclosure and the station main structure are excavated and constructed, the impact on the station main structure is small, and the safety risk is small.

[0026] The present invention enhances the structural stability of the connection portion between the second-phase connecting channel and the engineering doorway by arranging beam-column structures at the edges of the engineering doorway and the construction channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram before and after the construction of Example 1.

[0028] Figure 2 This is a schematic diagram of the structure of Example 2.

[0029] Figure 3 Schematic diagram before and after construction of Example 3.

[0030] Figure 4 This is a schematic diagram of the structure of Example 4.

[0031] Figure 5 Schematic diagram before and after construction of Example 5.

[0032] Figure 6 This is a schematic diagram of the structure of Example 6.

[0033] 1. Main structure of the station; 2. Phase I connecting passage; 3. Station enclosure; 4. Phase II connecting passage; 5. Inverted corbel structure; 6. Expansion joint; 7. Construction joint; 8. Lining wall; 9. Rebar connector; 10. Inner beam-column structure; 11. Outer beam-column structure. DETAILED DESCRIPTION

[0034] Example 1: Figure 1 As shown, this embodiment is a method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station, which specifically includes the following steps:

[0035] S1. Construct a first-phase connecting passage from the external engineering to the engineering door opening position of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range.

[0036] In this embodiment, a deformation joint is set on the first-phase connecting channel at a distance of 3.3m from the station enclosure, and the first-phase connecting channel is constructed to within 1.0m from the outer side of the station enclosure.

[0037] In this example, an inverted corbel structure is arranged on the outer side of the bottom plate of the first-phase connecting passage, the inverted corbel structure is connected to the outer side surface of the station enclosure, the internal steel bars of the inverted corbel are welded to the outer steel bars of the station enclosure wall; the inverted corbel structure is connected to the bottom plate of the first-phase connecting passage, and the internal steel bars of the inverted corbel are connected to the internal steel bars of the first-phase connecting passage through the connecting steel bars.

[0038] S2. Remove the station enclosure corresponding to the door opening of the main structure of the station to form a construction passage on the station enclosure that is compatible with the door opening of the main structure of the station.

[0039] Use static cutting or manual chiseling to remove the station enclosure at the interface. Note that ground wall reinforcement must be reserved at the bottom plate to connect the second phase connecting channel and the station enclosure.

[0040] S3. Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station.

[0041] S4. Cast the second phase connecting channel. One end of the second phase connecting channel is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel, forming a construction joint between the first and second phase connecting channels.

[0042] In this embodiment, steel bar connectors are reserved in the bottom beam and top beam of the station main structure to facilitate connection with the channel steel bar structure in the second phase connecting channel.

[0043] Example 2: Figure 2 As shown, this embodiment is basically the same as Embodiment 1, the only difference is that in this embodiment, an inverted corbel structure is provided on the outer side of the top plate and the bottom plate of the first-phase connecting passage at the same time, the inverted corbel structure is connected to the outer side surface of the station enclosure, and the internal steel bars of the inverted corbel are welded to the outer steel bars of the station enclosure wall; the inverted corbel structure is connected to the bottom plate of the first-phase connecting passage, and the internal steel bars of the inverted corbel are connected to the internal steel bars of the first-phase connecting passage via the connecting steel bars.

[0044] Example 3: Figure 3 As shown, this embodiment is a method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station, which specifically includes the following steps:

[0045] S1. Construct the first phase connecting passage from the external project to the door opening of the planned construction project on the top floor of the station main structure until the first phase connecting passage is constructed within 1.0m from the outside of the station enclosure.

[0046] S2. Remove the station enclosure corresponding to the planned construction doorway to form a construction channel on the station enclosure that is compatible with the engineering doorway. The station enclosure is removed by static force, cutting or manual removal to achieve connection with the main structure of the operating station.

[0047] S3. Remove the inner lining wall within the scope of the planned construction doorway on the main structure of the station to form a construction doorway on the main structure that is connected to the construction passage.

[0048] S4. Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station.

[0049] S5. Cast the second-phase connecting channel, one end of which is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first-phase connecting channel. A deformation joint is set between the first and second-phase connecting channels.

[0050] In this embodiment, steel bar connectors are reserved in the bottom beam and top beam of the top layer of the station main structure to facilitate connection with the channel steel bar structure in the second phase connecting channel.

[0051] Example 4: Figure 4 As shown, this embodiment is basically the same as Embodiment 3, the only difference is that in this example, the door opening to be constructed is located in the middle layer of the main structure of the station, and concealed columns are provided on the inner lining wall of the main structure of the station. Steel bar connectors are reserved in the concealed columns to facilitate connection with the channel steel bar structure in the second phase connecting channel.

[0052] Example 5: Figure 5 As shown, this embodiment is a method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station, which specifically includes the following steps:

[0053] S1. Construct the first phase connecting passage from the external project to the door opening of the planned construction project on the top floor of the station main structure until the first phase connecting passage is constructed within 1.0m from the outside of the station enclosure.

[0054] S2. Remove the station enclosure corresponding to the planned construction doorway to form a construction channel on the station enclosure that is compatible with the engineering doorway. The station enclosure is removed by static force, cutting or manual removal to achieve connection with the main structure of the operating station.

[0055] In this embodiment, an outer beam-column structure is arranged at the edge of the construction channel, and the outer beam-column structure is used to connect with the channel reinforcement structure in the second-phase connecting channel, so that the reinforcement in the second-phase connecting channel is implanted into the main structure.

[0056] S3. Remove the inner lining wall within the scope of the planned construction doorway on the main structure of the station to form a construction doorway on the main structure that is connected to the construction passage.

[0057] In this embodiment, an inner beam-column structure is arranged at the edge of the construction channel, and the inner beam-column structure is used to connect with the channel reinforcement structure in the second-phase connecting channel, so that the reinforcement in the second-phase connecting channel is implanted into the main structure.

[0058] S4. Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station.

[0059] S5. Cast the second-phase connecting channel, one end of which is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first-phase connecting channel. A deformation joint is set between the first and second-phase connecting channels.

[0060] In this embodiment, since no steel bar connectors are reserved on the original station side walls, it is necessary to construct a beam-column system on the inside and outside. Before the tunnel connecting this type of project is removed, the use of steel sections and the like should be considered to provide temporary vertical support for the station structure in the connecting area based on the specific design conditions of the outer connecting beam-column system of the external project of the station's main structure.

[0061] In this case, the door opening should be chiseled out in blocks from both sides to the middle. The horizontal width of the blocks should not be greater than the vertical height of the blocks. It should be determined according to the actual situation such as the specific chiseling method, the use function of the station at the connection, etc.

[0062] Example 6: Figure 6 As shown, this embodiment is basically the same as Embodiment 5, the only difference being that in this embodiment the door opening to be constructed is located in the middle layer of the main structure of the station, and the inner beam-column structure is connected to the steel bars in the concealed column on the inner lining wall of the main structure of the station.

Claims

1. A method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station. It is characterized in that include: Construct a first-phase connecting passage from the external engineering to the engineering door opening of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range; Chisel away the station enclosure corresponding to the door opening of the station main structure project to form a construction passage on the station enclosure that is compatible with the door opening of the station main structure project; Arrange a channel reinforcement structure in the second-phase connecting channel, and the channel reinforcement structure is connected to the reinforcement structure in the main structure of the station; one end of the second-phase connecting channel is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first-phase connecting channel; Casting of the second phase connecting channel.

2. A method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station. It is characterized in that include: Construct a first-phase connecting passage from the external project to the planned construction project door opening on the main structure of the station until the distance between the first-phase connecting passage and the main structure of the station reaches the preset range; Chisel away the station enclosure corresponding to the planned construction doorway to form a construction passage on the station enclosure that matches the construction doorway; Chisel away the inner lining wall within the scope of the proposed engineering door opening on the main structure of the station to form an engineering door opening on the main structure; Arrange a channel reinforcement structure in the second-phase connecting channel, and the channel reinforcement structure is connected to the reinforcement structure in the main structure of the station; one end of the second-phase connecting channel is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first-phase connecting channel; Casting of the second phase connecting channel.

3. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, Features: A steel bar connector is pre-buried in the main structure of the station at the location corresponding to the engineering doorway, which is convenient for connection with the channel steel bar structure in the second-phase connecting channel.

4. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, Features: When chiseling out the station enclosure corresponding to the project door opening, some steel bars are reserved for connecting the second phase connecting channel and the station enclosure.

5. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, Features: An inner beam-column structure is provided corresponding to the edge of the engineering door opening, and the steel bars in the inner beam-column structure are connected to the channel steel bar structure.

6. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, Features: An outer beam-column structure is provided corresponding to the edge of the construction channel, and the steel bars in the outer beam-column structure are connected to the channel steel bar structure.

7. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, Features: An inverted corbel structure is provided corresponding to the bottom plate of the second-phase connecting passage, and the steel bars in the inverted corbel structure are welded and connected to the steel bars on the station enclosure.

8. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 7, Features: An inverted corbel structure is provided corresponding to the top plate of the second-phase connecting passage, and the steel bars in the inverted corbel structure are welded and connected to the steel bars on the station enclosure.

9. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, Features: The first phase connecting passage is 1 meter away from the station enclosure.

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